JP2006004377A - Method and apparatus for processing data - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for processing data, which can make a size of a memory to store a data for checking an error relatively small. <P>SOLUTION: A data memory unit 14 stores a specified data, wherein a stored data is divided and grouped into a plurality of data blocks 20. A code memory unit 15 stores CRC code data for determination by processing a predefined code process for each data block 20 to be stored in the data memory unit 14. Accordingly, a data volume for the CRC code data for the determination that are stored in the code memory unit 15, can be reduced in terms of a data volume in comparison with a method to be used in the conventional technology, in which the whole CRC code data corresponding to the data stored in the data memory unit 14 is stored in the code memory unit 15. Thus the capacity of the code memory unit 15 that stores the CRC code data for determination can be reduced compared with that in the conventional technology. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a data processing apparatus and a data processing method for checking errors in data stored in a rewritable storage medium.

  In an apparatus including a memory in which predetermined data for executing predetermined operation processing is stored, the predetermined data stored in the memory may be damaged or an error may occur due to disturbance. As described above, when data is damaged or an error occurs in the data, the device may malfunction. In the conventional technology, in order to avoid malfunction of the device, the error of the data stored in the memory is checked, and if the data is damaged or if the data has an error, the predetermined operation processing is executed. Is configured to perform error processing such as stopping or correcting data errors. Conventional techniques relating to an apparatus for performing an error check of data stored in a memory are described in, for example, Patent Documents 1 to 4.

  An apparatus for verifying data by the data verification method described in Patent Document 1 includes data that has only a digit alignment function that has no substantial meaning, such as all digits. By adding data such that 0 is 0, data having a fixed data length is created, a CRC (Cyclic Redundancy Check) check code is generated for the fixed length data, and the generated CRC check code Is written to the memory together with the fixed-length data.

  The memory with an error correction function described in Patent Document 2 holds the data output of the error detection and correction circuit in synchronization with the clock signal during the test mode operation, and serves as the data input of the error correction code generation circuit and the error detection and correction circuit. In addition, the error correction code output of the error correction code generation circuit is inverted by an arbitrary bit to change the code, and the error correction code input of the error detection correction circuit is used, so that the memory circuit is not accessed in the test mode operation. It is possible to observe whether the error correction function is normal or abnormal, and at the same time, the circuit scale dedicated to test mode operation is reduced, the circuit scale and chip area of the memory with error correction function are reduced, and the error correction function The manufacturing cost of the attached memory can be reduced.

The storage means check device described in Patent Document 3 includes two RAMs to be checked.
The same control calculation and monitoring calculation are performed on the (Random Access Memory) bank, and it is configured to determine whether or not both calculation results are the same. Specifically, the results of the control calculation and the monitoring calculation are written into the respective RAM banks, and the written values are read to determine whether or not the two values match. As described above, in the storage means check device, whether the banks of the two RAMs to be checked are defective at one time by reading and comparing the data of the banks storing the results of the control calculation and the monitoring calculation, respectively. Determine whether.

  The memory circuit device described in Patent Document 4 is configured to generate CRC data and write the generated CRC data to the CRC data memory when the same data as the data written to the main memory is supplied to the CRC generation check circuit. The CRC data generated by the CRC generation check circuit corresponding to the write data to the main memory and the CRC data written to the CRC data memory and given through the latch circuit are synthesized by the CRC creation control circuit, CRC data for a plurality of bytes is stored in a CRC data memory. Further, the soundness of the read data from the main memory is checked based on the CRC data read from the CRC data memory.

Japanese Patent Laid-Open No. 6-161895 JP 2003-7085 A JP 2002-288047 A JP-A-8-115268

  In the memory circuit device described in Patent Document 4, when the same data as the data written to the main memory is given, error check data corresponding to the given data, for example, CRC data is generated and stored in the CRC data memory. Is done. That is, in the memory circuit device, CRC data corresponding to the given data must be stored in the CRC data memory. Therefore, as the amount of data to be given increases, the amount of CRC data stored in the CRC data memory also increases proportionally. Therefore, as the amount of CRC data increases, the capacity of the CRC data memory must be increased. There is a problem that must be.

  An object of the present invention is to provide a data processing apparatus and a data processing method capable of reducing the capacity of a memory for storing data used for error checking.

The present invention comprises data storage means for storing predetermined data;
Data block generation means for grouping predetermined data stored in the data storage means to generate a plurality of data blocks;
A coded data storage unit for judgment for storing coded data for judgment obtained by performing a predetermined coding process for each data block to be stored in the data storage unit;
Encoded data generating means for generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means;
The encoded data generated by the encoded data generation means and the encoded data for determination corresponding to the encoded data among the encoded data for determination stored in the encoded data storage means for determination In comparison, the data processing apparatus includes a determination unit that determines whether the encoded data matches the determination encoded data corresponding to the encoded data.

  According to the present invention, the data storage means stores predetermined data. The data block generation unit generates a plurality of data blocks by grouping predetermined data stored in the data storage unit. The determination encoded data storage means stores encoded data for determination obtained by performing a predetermined encoding process for each data block to be stored in the data storage means. The encoded data generation means generates encoded data by performing a predetermined encoding process for each data block generated by the data block generation means. The determination unit includes a determination code corresponding to the encoded data among the encoded data generated by the encoded data generation unit and each determination encoded data stored in the determination encoded data storage unit. The encoded data is compared with the encoded data to determine whether or not the encoded data matches the determination encoded data corresponding to the encoded data.

  As described above, the determination encoded data storage means does not store the encoded data for determination corresponding to the data stored in the data storage means as in the prior art. The encoded data for determination obtained by performing a predetermined encoding process for each data block to be stored in the means is stored. In this way, since the encoded data for determination obtained for each data block is stored in the encoded data storage unit for determination, the encoded data for determination corresponding to the data stored in the data storage unit is used for determination. Compared to the conventional technique for storing the encoded data storage means, the amount of the encoded data for determination stored in the encoded data storage means for determination can be reduced. Thereby, compared with the prior art, the capacity of the determination encoded data storage means for storing the encoded data for determination can be reduced.

The present invention further includes data amount storage means for storing a data amount of predetermined data to be included in each of the plurality of data blocks generated by the data block generation means,
The data block generation unit generates a plurality of data blocks by grouping the predetermined data stored in the data storage unit based on the data amount of the predetermined data stored in the data amount storage unit It is characterized by doing.

  According to the present invention, the data amount storage unit stores the data amount of predetermined data to be included in each of the plurality of data blocks generated by the data block generation unit. The data block generation unit groups the predetermined data stored in the data storage unit based on the data amount of the predetermined data to be included in each of the plurality of data blocks stored in the data amount storage unit. A plurality of data blocks.

  As described above, since the data amount of the predetermined data to be included in each of the plurality of data blocks generated by the data block generation unit is stored in the data amount storage unit, the data block generation unit stores the data amount storage Based on the data amount of the predetermined data stored in the means, the predetermined data stored in the data storage means can be grouped to reliably generate a plurality of data blocks.

  Further, the present invention is characterized in that the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generating means is the same.

  According to the present invention, the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generation unit is the same. As described above, since the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generation unit is the same, a predetermined encoding process is performed for each data block, and the determination code The processing circuit for realizing the encoded data generating means for generating the encoded data corresponding to the encoded data is different in the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generating means It can be configured more easily than the case.

Further, the present invention provides an operation means for performing a predetermined operation based on predetermined data stored in the data storage means,
And further comprising control means for controlling the encoded data generation means and the operation means,
The control means, when the operation means is operating, to perform an encoding process predetermined for each data block generated by the data block generation means to prohibit the operation to generate encoded data, The encoded data generating means is controlled, and when the encoded data generating means is operating, the operating means is controlled to prohibit a predetermined operation.

  According to the present invention, the operation means performs a predetermined operation based on predetermined data stored in the data storage means. When the operation means is operating, the control means applies the predetermined encoding process to each data block generated by the data block generation means, and prohibits the operation of generating encoded data by the control means, When the encoded data generating means is controlled and the encoded data generating means is operating, the operating means is controlled by the control means so as to prohibit a predetermined operation.

  As described above, when one of the operating means and the encoded data generating means is operating, the other operation is prohibited. For example, the operating means and the encoded data generating means are at substantially the same timing. It is possible to prevent a problem from occurring in the operation of at least one of the operation means and the encoded data generation means by performing a predetermined operation.

Further, the present invention provides an operation means for performing a predetermined operation based on predetermined data stored in the data storage means,
And further comprising control means for controlling the encoded data generation means and the operation means,
The control means controls the operation means so as to stop a predetermined operation, and performs an operation for generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means. As described above, the encoded data generation means is controlled.

  According to the present invention, the operation means performs a predetermined operation based on predetermined data stored in the data storage means. Further, the operation means generates encoded data by performing a predetermined encoding process for each data block controlled by the control means and generated by the data block generating means so as to stop the predetermined operation. The encoded data generation means is controlled by the control means so as to operate.

  As described above, the predetermined operation by the operation means is stopped, and the operation for generating the encoded data by the encoded data generation means is performed. Therefore, regardless of whether or not the operation means is performing the predetermined operation, The encoded data can be reliably generated by the encoded data generating means. Thus, the encoded data generated by the encoded data generation means is compared with the encoded data for determination corresponding to the encoded data, and the encoded data and the encoded data for determination match. It can be reliably determined by the determination means.

Further, the present invention provides an operation means for performing a predetermined operation based on predetermined data stored in the data storage means,
Control means for controlling the encoded data generation means,
The control means performs an operation of generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means when the operating means is not operating. And controlling the data generation means.

  According to the present invention, the operation means performs a predetermined operation based on predetermined data stored in the data storage means. When the operation means is not operating, the control means performs the operation of generating the encoded data by performing a predetermined encoding process for each data block generated by the data block generating means. The digitized data generating means is controlled.

  As described above, when the operating unit is not operating, the encoded data is generated by performing a predetermined encoding process for each data block generated by the data block generating unit and generating encoded data. . In other words, since the operation by the operation means is preferentially performed over the operation by the encoded data generation means, the processing speed of the predetermined operation by the operation means is delayed by the operation of the encoded data generation means, etc. Can be prevented from occurring.

In the present invention, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the predetermined data to be stored in the data storage means, and From the apparatus having the encoded data for determination to be stored in the encoded data storage means for determination, it is determined that the predetermined data to be stored in the data storage means does not match the encoded data for determination by the determining means Among the predetermined data corresponding to the predetermined data that contributed to the generation of the encoded data and the encoded data for determination to be stored in the encoded data storage unit for determination, the determination unit does not match the encoded data Data acquisition means for acquiring encoded data for determination corresponding to the encoded data for determination determined as;
Updating the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, to the predetermined data acquired by the data acquisition means; Data update means for updating the determination encoded data stored in the determination encoded data storage means and determined not to match the encoded data to the determination encoded data acquired by the data acquisition means; It is characterized by including.

  According to the present invention, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the data acquisition means is a predetermined data to be stored in the data storage means. Among the predetermined data to be stored in the data storage means from the device having the data of the above and the encoded data for determination to be stored in the encoded data storage means for determination, the encoded data for determination by the determination means Among the predetermined data corresponding to the predetermined data that contributed to the generation of the encoded data determined to be inconsistent with the encoded data for determination to be stored in the encoded data storage unit for determination, the encoded by the determination unit The determination encoded data corresponding to the determination encoded data determined not to match the encoded data is acquired.

  A data updating unit configured to store the predetermined data stored in the data storage unit that has contributed to the generation of the encoded data determined not to match the encoded data for determination with the predetermined data acquired by the data acquiring unit; And the determination encoded data stored in the determination encoded data storage means and determined to be inconsistent with the encoded data are updated to the determination encoded data acquired by the data acquisition means. To do.

  As described above, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the encoded data determined not to match the determination encoded data. The predetermined data stored in the data storage means that has contributed to the generation of the data is updated to the predetermined data acquired by the data acquisition means. Therefore, the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, inappropriate for causing the operating means to perform a predetermined operation. Based on such data, it is possible to avoid an inappropriate operation from being performed by the operation means.

  Further, as described above, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the encoded data is stored in the determination encoded data storage means, and the encoded data The determination encoded data determined not to match the data is updated to the determination encoded data acquired by the data acquisition means. Therefore, for example, the encoded data to be compared with the predetermined encoded data by the determining unit is inappropriate data even though the encoded data to be compared with the encoded data for determination by the determining unit is appropriate. For this reason, the determination unit can prevent erroneous determination that the encoded data and the determination encoded data corresponding to the encoded data do not match.

Further, the present invention provides an apparatus having predetermined data to be stored in the data storage means when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match. From the predetermined data to be stored in the data storage means, the predetermined data corresponding to the predetermined data that contributed to the generation of the encoded data determined not to match the encoded data for determination by the determination means Data acquisition means for acquiring;
Determination that generates encoded data for determination corresponding to encoded data for determination that is determined not to match the encoded data by the determination unit among the encoded data for determination to be stored in the encoded data storage unit for determination Encoding data generation means,
Updating the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the determination encoded data to the predetermined data acquired by the data acquisition means; The determination encoded data stored in the determination encoded data storage means and determined to be inconsistent with the encoded data is updated with the determination encoded data generated by the determination encoded data generation means. Data updating means.

  According to the present invention, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the data acquisition means is a predetermined data to be stored in the data storage means. Among the predetermined data to be stored in the data storage means, from the apparatus having the data of the data corresponding to the predetermined data that contributed to the generation of the encoded data determined by the determination means as not matching with the encoded data for determination The predetermined data to be acquired is acquired.

  The determination encoded data generation means corresponds to the determination encoded data determined to be not coincident with the encoded data by the determination means among the encoded determination data to be stored in the determination encoded data storage means. Code data for determination is generated.

  A data updating unit configured to store the predetermined data stored in the data storage unit that has contributed to the generation of the encoded data determined not to match the encoded data for determination with the predetermined data acquired by the data acquiring unit; And the determination encoded data stored in the determination encoded data storage means and determined to be inconsistent with the encoded data are converted into the determination encoding data generated by the determination encoded data generation means. Update to computerized data.

  As described above, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the encoded data determined not to match the determination encoded data. The predetermined data stored in the data storage means that has contributed to the generation of the data is updated to the predetermined data acquired by the data acquisition means. Therefore, the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, inappropriate for causing the operating means to perform a predetermined operation. Based on such data, it is possible to avoid an inappropriate operation from being performed by the operation means.

  As described above, when it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the encoded data for determination is stored in the encoded data storage for determination, The determination encoded data determined not to match the encoded data is updated to the determination encoded data generated by the determination encoded data generation means. Therefore, for example, the encoded data to be compared with the predetermined encoded data by the determining unit is inappropriate data even though the encoded data to be compared with the encoded data for determination by the determining unit is appropriate. For this reason, the determination unit can prevent erroneous determination that the encoded data and the determination encoded data corresponding to the encoded data do not match.

Further, the present invention provides an operation means for performing a predetermined operation based on predetermined data stored in the data storage means,
Control means for controlling the operating means,
The control means, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the encoded data determined not to match the determination encoded data The operation means is controlled so as to stop the operation based on the data included in the data block that contributed to the generation of.

  According to the present invention, the operation means performs a predetermined operation based on predetermined data stored in the data storage means. When it is determined by the determination means that the encoded data and the encoded data for determination corresponding to the encoded data do not match, it contributed to the generation of encoded data determined not to match the encoded data for determination The operation unit is controlled by the control unit so as to stop the operation based on the data included in the data block. Therefore, the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, inappropriate for causing the operating means to perform a predetermined operation. Based on such data, it is possible to avoid an inappropriate operation from being performed by the operation means.

Further, the present invention provides an operation means for performing a predetermined operation based on predetermined data stored in the data storage means,
Control means for controlling the operating means;
A data output means for outputting predetermined data for operating the operating means when it is determined by the determining means that the encoded data and the encoded data for determination corresponding to the encoded data do not match; Including
When it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the control means is based on predetermined data stored in the data storage means. The operation means is controlled to prohibit the predetermined operation and to operate based on the predetermined data output by the data output means.

  According to the present invention, the operation means performs a predetermined operation based on predetermined data stored in the data storage means. The data output means outputs predetermined data for operating the operation means when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match. When it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, a predetermined operation based on predetermined data stored in the data storage means is performed. The operation means is controlled by the control means so as to operate based on the predetermined data that is prohibited and output by the data output means.

  As described above, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the operation means based on the predetermined data stored in the data storage means The predetermined operation is prohibited, and the operation means is configured to perform the predetermined operation based on the predetermined data output by the data output means. Therefore, the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, inappropriate for causing the operating means to perform a predetermined operation. It is possible to avoid an inappropriate operation from being performed by the operation means based on the correct data, and to cause the operation means to perform an appropriate operation based on the predetermined data output from the data output means.

  According to the present invention, the determination encoded data and the encoded data are checksum data.

  According to the present invention, the determination encoded data and the encoded data are checksum data. The checksum data is stored in the data storage means and obtained by adding the data included in the data block generated by the data block generation means. Therefore, the processing circuit of the encoded data generation means when generating checksum data is configured more simply than the processing circuit of the encoded data generation means when generating cyclic redundancy check code data including multiplication in the calculation formula. be able to. In addition, since the checksum data can be obtained by adding predetermined data, it can be obtained more easily than the cyclic redundancy check code data including multiplication in the calculation formula, and is relatively less than the cyclic redundancy check code data. It can be obtained in a short time.

  Further, the present invention is characterized in that the coded data for determination and the coded data are cyclic redundancy check code data.

  According to the present invention, the determination encoded data and encoded data are cyclic redundancy check code data. Since the cyclic redundancy check code data is used to check for errors in predetermined data stored in the data storage means, it is possible to detect erroneous bits. As a result, it is possible to detect the error of the predetermined data with higher accuracy than when checking the error of the predetermined data using the checksum data.

In the present invention, the data storage unit stores predetermined data,
The data block generation unit groups predetermined data stored in the data storage unit to generate a plurality of data blocks,
The determination encoded data storage unit stores encoded data for determination obtained by performing a predetermined encoding process for each data block to be stored in the data storage unit,
The encoded data generation unit performs a predetermined encoding process for each data block generated by the data block generation unit to generate encoded data,
The determination unit includes a determination encoding corresponding to the encoded data among the encoded data generated by the encoded data generation unit and the determination encoded data stored in the determination encoded data storage unit. This is a data processing method characterized by comparing data and determining whether the encoded data matches the determination encoded data corresponding to the encoded data.

  According to the present invention, the data storage unit stores predetermined data, and the predetermined data stored in the data storage unit is grouped to generate a plurality of data blocks. The determination encoded data storage unit stores determination encoded data obtained by performing a predetermined encoding process for each data block to be stored in the data storage unit. In addition, a predetermined encoding process is performed for each of the generated data blocks to generate encoded data. Then, the encoded data to be generated is compared with the encoded data for determination corresponding to the encoded data among the encoded data for determination stored in the encoded data storage unit for determination. It is determined whether or not the data matches the determination encoded data corresponding to the encoded data.

  As described above, the determination encoded data storage unit does not store the encoded data for determination corresponding to the data stored in the data storage unit as in the conventional technique, but stores the data storage. Coding data for determination obtained by performing a predetermined coding process for each data block to be stored in the section is stored. Therefore, compared with the conventional technique for storing the encoded data for determination corresponding to the predetermined data stored in the data storage unit in the encoded data storage unit for determination, the determination stored in the encoded data storage unit for determination The amount of encoded data can be reduced. This makes it possible to reduce the capacity of the determination encoded data storage unit that stores the determination encoded data as compared with the conventional technique.

  According to the present invention, the determination encoded data storage means does not store the determination encoded data corresponding to the data stored in the data storage means as in the prior art, but the data Coded data for determination obtained by performing a predetermined coding process for each data block to be stored in the storage means is stored. Therefore, compared with the conventional technique for storing the encoded data for determination corresponding to the data stored in the data storage means, the data amount of the encoded data for determination stored in the encoded data storage means for determination is reduced. Can do. Thereby, compared with the prior art, the capacity of the determination encoded data storage means for storing the encoded data for determination can be reduced.

  According to the present invention, the data amount of the predetermined data to be included in each of the plurality of data blocks generated by the data block generation unit is stored in the data amount storage unit. Based on the data amount of the predetermined data stored in the amount storage means, the predetermined data stored in the data storage means can be grouped to reliably generate a plurality of data blocks.

  Further, according to the present invention, since the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generation unit is the same, a predetermined encoding process is performed for each data block, Data of predetermined data included in each of a plurality of data blocks generated by the data block generating means is a processing circuit for realizing encoded data generating means for generating encoded data corresponding to the encoded data for determination. It can be configured more easily than when the amounts are different.

  Further, according to the present invention, when one of the operating means and the encoded data generating means is operating, the other operation is prohibited. For example, the operating means and the encoded data are substantially the same timing. It is possible to prevent a problem from occurring in the operation of at least one of the operation unit and the encoded data generation unit in an attempt to cause the generation unit to perform a predetermined operation.

  Further, according to the present invention, since the predetermined operation by the operation means is stopped and the operation for generating encoded data by the encoded data generation means is performed, the encoding is performed regardless of whether or not the operation means is operating. The encoded data can be reliably generated by the data generating means. Thus, the encoded data generated by the encoded data generation means is compared with the encoded data for determination corresponding to the encoded data, and the encoded data and the encoded data for determination match. It can be reliably determined by the determination means.

  According to the invention, when the operating means is not operating, the operation by the encoded data generating means for generating the encoded data by performing a predetermined encoding process for each data block generated by the data block generating means. I do. In other words, since the operation by the operation means is preferentially performed over the operation by the encoded data generation means, the processing speed of the predetermined operation by the operation means is delayed by the operation of the encoded data generation means, etc. Can be prevented from occurring.

  Further, according to the present invention, when it is determined by the determining means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, it is determined that they do not match the encoded data for determination. Since the predetermined data stored in the data storage means contributing to the generation of the encoded data is updated to the predetermined data acquired by the data acquisition means, it is determined that it does not match the determination encoded data. Inappropriate operation by the operating means based on the predetermined data stored in the data storage means that contributed to the generation of the encoded data, in other words, data inappropriate for causing the operating means to perform a predetermined operation Can be avoided. Further, when it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the encoded data for storage is stored in the encoded data storage for determination, and the encoded data and Since the encoded data for determination that is determined not to match is updated to the encoded data for determination acquired by the data acquisition unit, for example, the encoded data that is compared with the encoded data for determination by the determination unit is appropriate. In spite of this, since the encoded data for determination compared with the predetermined encoded data by the determining means is inappropriate data, the encoded data for determination matches the encoded data by the determining means. It is possible to prevent erroneous determination if not.

  Further, according to the present invention, when it is determined by the determining means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, it is determined that they do not match the encoded data for determination. Since the predetermined data stored in the data storage means contributing to the generation of the encoded data is updated to the predetermined data acquired by the data acquisition means, it is determined that it does not match the determination encoded data. Inappropriate operation by the operating means based on the predetermined data stored in the data storage means that contributed to the generation of the encoded data, in other words, data inappropriate for causing the operating means to perform a predetermined operation Can be avoided. Further, when it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the encoded data for storage is stored in the encoded data storage for determination, and the encoded data and Since the determination encoded data determined not to match is updated to the determination encoded data generated by the determination encoded data generation means, for example, the encoding to be compared with the determination encoded data by the determination means In spite of the fact that the encoded data is appropriate, the determination encoded data to be compared with the predetermined encoded data by the determination means is improper data. Therefore, the determination means encodes the determination encoded data with the determination encoded data. It is possible to prevent erroneous determination that the data does not match.

  Further, according to the present invention, the predetermined data stored in the data storage means that has contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, the operation means performs a predetermined operation. It is possible to prevent an inappropriate operation from being performed by the operation means based on data inappropriate for the operation.

  Further, according to the present invention, when it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the predetermined data stored in the data storage means A predetermined operation by the based operation means is prohibited, and the operation means is configured to perform a predetermined operation based on the predetermined data output by the data output means. Therefore, the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the encoded data for determination, in other words, inappropriate for causing the operating means to perform a predetermined operation. It is possible to avoid an inappropriate operation from being performed by the operation means based on the correct data, and to cause the operation means to perform an appropriate operation based on the predetermined data output from the data output means.

  Further, according to the present invention, the processing circuit of the encoded data generation means when generating checksum data is more than the processing circuit of the encoded data generation means when generating cyclic redundancy check code data including multiplication in the calculation formula. Can also be configured easily. In addition, since the checksum data can be obtained by adding predetermined data, it can be obtained more easily than the cyclic redundancy check code data including multiplication in the calculation formula, and is relatively less than the cyclic redundancy check code data. It can be obtained in a short time.

  According to the invention, the determination encoded data and the encoded data are cyclic redundancy check code data. By using the cyclic redundancy check code data, by detecting an error in the predetermined data stored in the data storage means, using checksum data with higher accuracy than when detecting the error in the predetermined data, Data errors can be detected.

  Further, according to the present invention, the determination encoded data storage unit does not store the determination encoded data corresponding to the data stored in the data storage unit as in the conventional technique. Coded data for determination obtained by performing a predetermined coding process for each data block to be stored in the data storage unit is stored. Therefore, compared with the conventional technique for storing the encoded data for determination corresponding to the data stored in the data storage unit in the encoded data storage unit for determination, the determination code stored in the encoded data storage unit for determination is stored. The data amount of the digitized data can be reduced. This makes it possible to reduce the capacity of the determination encoded data storage unit that stores the determination encoded data as compared with the conventional technique.

FIG. 1 is a block diagram showing a configuration of a data processing apparatus 1 according to an embodiment of the present invention. The data processing device 1 is, for example, an in-vehicle control device, specifically, an electronic fuel injection device (abbreviation: EFI) and an electronic control unit (Electronic).
Control Unit (abbreviation: ECU). For example, analog signals output from a plurality of predetermined sensors 2 provided in each part of the vehicle, specifically, a vehicle speed sensor, a water temperature sensor, and an engine speed sensor are input to the data processing device 1 for each channel. Predetermined arithmetic processing for suitably performing the control is performed. The data processing device 1 has a function of checking an error of predetermined data stored in a storage unit such as a RAM (Random Access Memory).

  The data processing apparatus 1 includes a multiplexer (abbreviation: MPX) 11, an analog / digital (abbreviation: A / D) conversion unit 12, a logic circuit unit 13, a data storage unit 14, a code storage unit 15, and a data amount storage unit 16. The monitoring unit 17 and the data writing unit 18 are included.

  Analog signals respectively output from the plurality of sensors 2 are input to the A / D converter 12 via the MPX 11. The A / D conversion unit 12 converts the input analog signal into a digital signal and outputs the digital signal to the logic circuit unit 13.

  The logic circuit unit 13 includes a first logic circuit unit 131, a second logic circuit unit 132,..., And an x-th logic circuit unit 13x (x is a natural number of 3 or more). The logic circuit unit 13 is mutually connected to a data storage unit 14 described later, and performs a predetermined signal processing operation on the input signal based on predetermined data stored in the data storage unit 14.

  The logic circuit unit 13 is realized by a filter circuit and a comparison circuit, for example. When the logic circuit unit 13 is realized by a filter circuit, the filter circuit performs predetermined processing on an input signal based on predetermined data stored in the data storage unit 14 connected to each other, for example, filter coefficients. Perform filtering. When the logic circuit unit 13 is realized by a comparison circuit, the comparison circuit performs a predetermined comparison with respect to an input signal based on predetermined data stored in the data storage unit 14 connected to each other, for example, a threshold value. Process. In the present embodiment, the logic circuit unit 13 can communicate with the data processing device 1 via a predetermined communication line network, by obtaining a signal obtained by performing a predetermined signal processing operation on the input signal. To the host device 3 connected to the. The host device 3 is realized by a microcomputer, for example.

  In addition, when the logic circuit unit 13 is executing a read operation of predetermined data stored in the data storage unit 14, the logic circuit unit 13 displays a busy signal indicating that the predetermined data read operation is being performed. 17

  The data storage unit 14 is realized by a rewritable storage medium such as a register and a RAM (Random Access Memory). The data storage unit 14 includes a plurality of registers and a plurality of RAMs. The plurality of registers and the plurality of RAMs are respectively connected to a predetermined logic circuit unit 13. When the data processor 1 is turned on, the data storage unit 14 stores a plurality of predetermined data for causing the logic circuit unit 13 to perform a predetermined operation. Predetermined data stored in the data storage unit 14 is grouped by a monitoring unit 17 to be described later, and a plurality of data blocks, specifically, a first data block 141, a second data block 142, and a third data block. ,..., Nth data block 14n (n is a natural number of 4 or more) is generated. Each data block may be configured to include a register and a RAM connected to one logic circuit unit 13, or may be configured to include a register and a RAM connected to a plurality of logic circuit units 13, respectively. . In the following description, when an unspecified data block is indicated, it may be expressed as “data block 20”.

The code storage unit 15 is realized by a rewritable storage medium such as a flash memory. The code storage unit 15 stores cyclic redundancy check (CRC) code data obtained by performing a predetermined encoding process for each data block 20 to be stored in the data storage unit 14. The CRC code data is used when checking an error of predetermined data stored in the data storage unit 14. CRC code data is a remainder when a value obtained by multiplying predetermined data by the highest order term of a predetermined generator polynomial is divided by the generator polynomial. Specifically, if the predetermined data is P (X) and the generator polynomial is G (X) = X ¹⁶ + X ¹² + X ⁵ +1, the CRC code data is X ¹⁶ × P (X) / G (X). It is required in the remainder. In the following description, a plurality of CRC code data stored in the code storage unit 15 may be referred to as “determination CRC code data”.

  The data amount storage unit 16 is realized by a rewritable storage medium such as a flash memory. The data amount storage unit 16 stores a data amount of predetermined data to be included in each of the plurality of data blocks 20 generated by the monitoring unit 17 described later.

  The monitoring unit 17 includes a data reading unit 21, a code calculation unit 22, an operation code storage unit 23, and a code determination unit 24. The monitoring unit 17 is realized by a microcomputer, for example. The monitoring unit 17 is connected to the logic circuit unit 13, the data storage unit 14, the code storage unit 15, and the data amount storage unit 16. The monitoring unit 17 is based on the data amount of the predetermined data stored in the data amount storage unit 16, specifically, based on the data amount of the predetermined data to be included in each of the plurality of data blocks 20. A plurality of data blocks 20 are generated by grouping the predetermined data stored in.

  Based on the data amount of the predetermined data stored in the data amount storage unit 16, the data reading unit 21 converts the predetermined data stored in the data storage unit 14 for each data block 20 generated by the monitoring unit 17. read out. The code calculation unit 22 performs a predetermined encoding process for each of the generated data blocks 20 to generate CRC code data. The CRC code data generated by the code calculation unit 22 is used when checking an error of predetermined data stored in the data storage unit 14, similarly to the CRC code data for determination. The CRC code data generated by the code calculation unit 22 is given to the calculation code storage unit 23. The operation code storage unit 23 stores CRC code data provided from the code operation unit 22.

  In the present embodiment, the CRC code data is used when checking for an error in predetermined data stored in the data storage unit 14, but in another embodiment of the present invention, the monitoring unit The checksum data obtained based on the predetermined data included in the data block 20 generated by 17 may be used to check for errors in the predetermined data stored in the data storage unit 14. In this case, the code storage unit 15 stores checksum data obtained by performing a predetermined encoding process for each data block 20 to be stored in the data storage unit 14, and the code calculation unit 22 stores the data block 20. Each time a predetermined encoding process is performed, checksum data is generated.

  The code determination unit 24 corresponds to the CRC code data stored in the operation code storage unit 23 among the CRC code data stored in the operation code storage unit 23 and the CRC code data for determination stored in the code storage unit 15. CRC code data for determination to be read is read out. The code determination unit 24 corresponds to the CRC code data stored in the operation code storage unit 23 among the CRC code data stored in the operation code storage unit 23 and the CRC code data for determination stored in the code storage unit 15. The determination CRC code data is compared with each other to determine whether the CRC code data matches the determination CRC code data corresponding to the CRC code data.

  In the present embodiment, when the code determination unit 24 determines that the CRC code data matches the determination CRC code data corresponding to the CRC code data, the CRC determined to match the determination CRC code data. It is determined that no error has occurred in the predetermined data that contributed to the generation of the code data. If the code determination unit 24 determines that the CRC code data does not match the determination CRC code data corresponding to the CRC code data, the CRC code data determined not to match the determination CRC code data. It is determined that an error has occurred in the predetermined data that contributed to the generation of.

  When the code determination unit 24 determines that the CRC code data does not match the determination CRC code data corresponding to the CRC code data, the monitoring unit 17 does not match the determination CRC code data. An error occurrence signal indicating that an error has occurred in predetermined data that has contributed to the generation of CRC code data determined to be a logic connected to a register or RAM that stores the data in which the error has occurred This is given to the circuit unit 13. The logic circuit unit 13 according to the present embodiment performs stable signal processing operation even when the code determination unit 24 determines that the CRC code data does not match the determination CRC code data corresponding to the CRC code data. When it is determined that the CRC code data and the CRC code data for determination corresponding to the CRC code data do not match, predetermined data, specifically fail safe data, is stored. Includes processing circuitry for output. The logic circuit unit 13 given the error occurrence signal from the monitoring unit 17 outputs predetermined fail-safe data, and performs a predetermined signal processing operation based on the output fail-safe data.

  In addition, when the code determination unit 24 determines that the CRC code and the determination CRC code corresponding to the CRC code do not match, the monitoring unit 17 stores predetermined data and code to be stored in the data storage unit 14. A device having a CRC code for determination to be stored in the storage unit 15, in the present embodiment, for the host device 3, a predetermined data to be stored in the data storage unit 14 is determined by the code determination unit 24. A transmission command of the predetermined data corresponding to the predetermined data contributing to the generation of the CRC code determined not to coincide with the CRC code is transmitted to the data writing unit 18. The monitoring unit 17 corresponds to the determination CRC code that is determined not to match the CRC code by the code determination unit 24 among the determination CRC codes to be stored in the code storage unit 15 with respect to the host device 3. A transmission request for a CRC code for determination is transmitted.

  In addition, the monitoring unit 17 acquires the CRC code data for determination that is transmitted from the host device 3 and requested for transmission. Then, the monitoring unit 17 transmits the CRC code data for determination, which is determined not to match the CRC code data by the code determination unit 24 from the CRC code data for determination stored in the code storage unit 15, from the host device 3. The obtained CRC code data for determination is updated.

  The data writing unit 18 receives predetermined data stored in the data storage unit 14 that has contributed to the generation of the CRC code determined not to match the CRC code for determination by the code determination unit 24. That is, among the predetermined data to be stored in the data storage unit 14, the predetermined data corresponding to the predetermined data that contributed to the generation of the CRC code determined not to match the CRC code for determination by the code determination unit 24. Update.

  As described above, in this embodiment, the monitoring unit 17 determines that the code determination unit 24 does not match the CRC code among the determination CRC codes to be stored in the code storage unit 15 with respect to the host device 3. A transmission request for the CRC code for determination corresponding to the determined CRC code for the determination is given, and a CRC code for determination corresponding to the CRC code for determination determined not to match the CRC code is obtained from the host device 3. However, in another embodiment of the present invention, for example, predetermined data is acquired from the host device 3, and based on the acquired predetermined data, the determination is to be stored in the code storage unit 15. Among the CRC code data, a CRC code for determination corresponding to the CRC code for determination that is determined not to match the CRC code by the code determination unit 24 is generated. It may be configured to.

  The host device 3 gives a plurality of signals given from the logic circuit unit 13 to the actuator 4. The actuator 4 performs predetermined control based on a plurality of signals given from the host device 3. For example, when the actuator 4 is an injector, the injector controls the fuel injection amount based on a plurality of signals given from the host device 3.

  In the present embodiment, the data storage means is configured by the data storage unit 14. The data block generation unit is configured by the monitoring unit 17. The determination encoded data storage means is configured by the code storage unit 15. The encoded data generation means includes a data reading unit 21 and a code calculation unit 22. The determination unit is configured by the code determination unit 24. The data amount storage means is configured by the data amount storage unit 16. The operating means is configured by the logic circuit unit 13. The control means is configured by the monitoring unit 17. The data acquisition unit includes the monitoring unit 17 and the data writing unit. The data updating means is configured by the monitoring unit 17 and the data writing unit 18. The determination encoded data generation means is configured by the code calculation unit 22. The data output means is configured by the logic circuit unit 13. In the present embodiment, the encoded data corresponds to CRC code data, and the determination encoded data corresponds to determination CRC code data.

  FIG. 2 is a flowchart illustrating an operation procedure of the monitoring unit 17 relating to an error check process for predetermined data stored in the data storage unit 14. The operation procedure of the monitoring unit 17 relating to the error check processing of predetermined data stored in the data storage unit 14 is executed when the data processing device 1 is turned on and predetermined data is stored in the data storage unit 14. The In the present embodiment, setting information (hereinafter simply referred to as “signal processing setting information”) regarding whether or not to perform a predetermined signal processing operation of the logic circuit unit 13 with priority over other operations may be described. ), And setting information (hereinafter sometimes simply referred to as “error check processing setting information”) regarding whether or not to perform error check processing operation of predetermined data over other operations. 1 is stored.

  In step a1, the monitoring unit 17 determines whether or not the predetermined signal processing operation of the logic circuit unit 13 is set in advance based on the signal processing setting information. In step a1, when the monitoring unit 17 determines that the predetermined signal processing operation of the logic circuit unit 13 is set in advance in advance, the process proceeds to step a2, and the monitoring unit 17 preliminarily operates the logic circuit. When it is determined that the predetermined signal processing operation of the unit 13 is not set to be performed preferentially, the process proceeds to step a4.

  In step a <b> 2, the monitoring unit 17 determines whether a busy signal is given from the logic circuit unit 13. In step a2, when the monitoring unit 17 determines that the busy signal is supplied from the logic circuit unit 13, the monitoring unit 17 waits until it is determined that the busy signal is not supplied from the logic circuit unit 13. When the monitoring unit 17 determines that the busy signal is given from the logic circuit unit 13, for example, the predetermined signal processing operation by the logic circuit unit 13 is given priority over the error check processing operation of predetermined data. Is done. In step a2, when the monitoring unit 17 determines that the busy signal is not given from the logic circuit unit 13, the process proceeds to step a3.

  In step a <b> 3, the monitoring unit 17 gives a stop signal for stopping a predetermined signal processing operation of the logic circuit unit 13 to the logic circuit unit 13. After performing the process of step a3, the process proceeds to step b1 shown in the flowchart of FIG.

  In step a4, the monitoring unit 17 determines based on the error check process setting information whether or not it is set to preferentially perform an error check process operation for predetermined data. In step a4, when the monitoring unit 17 determines that the error check processing operation for the predetermined data is set to be performed with priority, the process proceeds to step a5, where the monitoring unit 17 checks the error of the predetermined data. If it is determined that the processing operation is not set to be performed preferentially, the process proceeds to step a6.

  In step a <b> 5, the monitoring unit 17 gives a stop signal for stopping a predetermined signal processing operation of the logic circuit unit 13 to the logic circuit unit 13. After performing the process of step a5, the process proceeds to step b1 shown in the flowchart of FIG.

  In step a6, the monitoring unit 17 determines whether or not a busy signal is given from the logic circuit unit 13. In step a6, when the monitoring unit 17 determines that the busy signal is supplied from the logic circuit unit 13, the monitoring unit 17 waits until the logic circuit unit 13 determines that the busy signal is not supplied. When the monitoring unit 17 determines that a busy signal is given from the logic circuit unit 13, for example, a predetermined signal processing operation by the logic circuit unit 13 is performed. In step a6, when the monitoring unit 17 determines that the busy signal is not given from the logic circuit unit 13, the process proceeds to step a7.

  In step a <b> 7, the monitoring unit 17 gives a stop signal for stopping a predetermined signal processing operation of the logic circuit unit 13 to the logic circuit unit 13. After performing the process of step a7, the process proceeds to step b1 shown in the flowchart of FIG.

  FIG. 3 is a flowchart illustrating an operation procedure of the monitoring unit 17 relating to an error check process for predetermined data stored in the data storage unit 14. The operation procedure of the monitoring unit 17 relating to the error check processing of the predetermined data stored in the data storage unit 14 is that the monitoring unit 17 outputs a stop signal for stopping the predetermined signal processing operation of the logic circuit unit 13 to the logic circuit. It is executed after the processing given to the unit 13 is performed.

  In step b1, the monitoring unit 17 puts 1 which is an initial value in the variable n, and proceeds to step b2. Here, the variable n indicates a number assigned to each of the plurality of data blocks 20 generated by grouping predetermined data stored in the data storage unit 14.

  In step b2, the monitoring unit 17 puts the initial value 1 in the variable m, and proceeds to step b3. Here, the variable m is a pointer representing a storage area of the data storage unit 14 corresponding to the nth data block 14n (n is a natural number).

  In step b3, the operation code storage unit 23 clears the stored CRC code data. In step b4, the data reading unit 21 reads data stored in the mth storage area of the data storage unit 14 corresponding to the nth data block 14n (n is a natural number).

  In step b5, the monitoring unit 17 newly adds a value obtained by adding the variables m and 1 to the variable m. In step b5, when the value obtained by adding the variables m and 1 is newly entered in the variable m, the process proceeds to step b6.

  In step b6, the monitoring unit 17 determines whether or not the variable m is larger than the variable M. Here, the variable M is the total number of storage areas of the data storage unit 14 corresponding to the nth data block 14n (n is a natural number). In step b6, when the monitoring unit 17 determines that the variable m is larger than the variable M, the process proceeds to step b7, and when the monitoring unit 17 determines that the variable m is equal to or less than the variable M, the step Returning to b4, the same processing as described above is performed.

  In step b7, the code calculation unit 22 obtains CRC code data based on the data block 20 read from the data storage unit 14, and stores the obtained CRC code data in the operation code storage unit 23.

  In step b8, the code determination unit 24 stores the CRC code data stored in the operation code storage unit 23 and the CRC code data for determination stored in the code storage unit 15 in the operation code storage unit 23. The CRC code data for determination corresponding to the CRC code data is read out.

  In step b9, the code determination unit 24 stores the CRC code data stored in the operation code storage unit 23 and the CRC code data for determination stored in the code storage unit 15 in the operation code storage unit 23. It is determined whether the CRC code data for determination corresponding to the CRC code data matches. In step b <b> 9, the code determination unit 24 stores the CRC code data stored in the operation code storage unit 15 and the CRC code data for determination stored in the code storage unit 15 in the operation code storage unit 15. When it is determined that the determination CRC code data corresponding to the CRC code data matches, the process proceeds to step b10. In step b <b> 9, the code determination unit 24 stores the CRC code data stored in the operation code storage unit 15 and the CRC code data for determination stored in the code storage unit 15 in the operation code storage unit 15. If it is determined that the determination CRC code data corresponding to the CRC code data does not match, the process proceeds to step b12.

  In step b10, the monitoring unit 17 newly adds a value obtained by adding the variables n and 1 to the variable n. When a value obtained by adding the variables n and 1 is newly entered in the variable n in step b10, the process proceeds to step b11.

  In step b11, the monitoring unit 17 determines whether or not the variable n is larger than the variable N. Here, the variable N is the number of data blocks 20 generated by grouping predetermined data stored in the data storage unit 14. In step b11, when the monitoring unit 17 determines that the variable n is larger than the variable N, the process returns to step b1 and performs the same processing as described above. In step b11, when the monitoring unit 17 determines that the variable n is equal to or less than the variable N, the process returns to step b2 and performs the same processing as described above.

  In step b12, the monitoring unit 17 determines the predetermined data that contributes to the generation of the CRC code that is determined not to match the CRC code for determination by the code determination unit 24 among the predetermined data to be stored in the data storage unit 14. A command to transmit predetermined data corresponding to the data to the data writing unit 18 is transmitted to the host device 3.

  In step b13, the monitoring unit 17 determines the CRC code for determination corresponding to the CRC code for determination that is determined not to match the CRC code by the code determination unit 24 among the CRC codes to be stored in the code storage unit 15. Is sent to the host device 3.

  In step b14, the monitoring unit 17 receives the CRC code data for determination transmitted from the host device 3. In step b15, the monitoring unit 17 determines the CRC code data for determination, which is determined by the code determination unit 24 as not matching with the CRC code data, from the CRC code data for determination stored in the code storage unit 15 in step b13. The data is updated to the CRC code data for determination received in (1). After performing the process of step b15, it returns to step b2 and performs the same process as described above.

  Note that the above-described error check process for predetermined data stored in the data storage unit 14 ends when the data processing apparatus 1 is powered off.

  FIG. 4 is a flowchart showing an operation procedure of the host apparatus 3 relating to the transmission processing of predetermined data and determination CRC code data. The operation procedure of the host device 3 regarding the transmission processing of the predetermined data and the CRC code data for determination is performed by the code determination unit 24 among the predetermined data to be stored in the data storage unit 14 from the monitoring unit 17 of the data processing device 1. The transmission command to the data writing unit 18 of the predetermined data corresponding to the predetermined data that contributed to the generation of the CRC code determined not to match the CRC code for determination, and the CRC for determination to be stored in the code storage unit 15 This is executed when a transmission request for a CRC code for determination corresponding to a CRC code for determination determined by the code determination unit 24 as not corresponding to the CRC code is given.

  In step c 1, the host device 3 stores the predetermined data to be stored in the data storage unit 14 based on the transmission command to the data writing unit 18 for the predetermined data given from the monitoring unit 17 of the data processing device 1. Among them, predetermined data corresponding to predetermined data contributed to the generation of the CRC code determined not to match the CRC code for determination by the code determination unit 24 is transmitted to the data writing unit 18 of the data processing device 1.

  In step c2, the host device 3 determines the CRC for determination requested from the monitoring unit 17 of the data processing device 1 based on the transmission request for the CRC code data for determination given from the monitoring unit 17 of the data processing device 1. Code data, specifically, the CRC code for determination corresponding to the CRC code for determination determined by the code determination unit 24 as not to match the CRC code among the CRC codes for determination to be stored in the code storage unit 15. Then, the data is transmitted to the monitoring unit 17 of the data processing apparatus 1, and all the operation procedures are finished.

  As described above, according to the present embodiment, the code storage unit 15 stores the CRC code for determination corresponding to the predetermined data stored in the data storage unit 14 as in the prior art. Instead, a CRC code for determination obtained by performing a predetermined encoding process for each data block 20 to be stored in the data storage unit 14 is stored. In this way, since the CRC code data for determination obtained for each data block 20 is stored in the code storage unit 15, the CRC code for determination corresponding to the predetermined data stored in the data storage unit 14 is stored in the code. Compared to the conventional technique stored in the unit 15, the data amount of the CRC code data for determination stored in the code storage unit 15 can be reduced. As a result, the capacity of the code storage unit 15 that stores the CRC code for determination can be reduced as compared with the conventional technique.

  Further, according to the present embodiment, since the data amount of the predetermined data to be included in each of the plurality of data blocks 20 generated by the monitoring unit 17 is stored in the data amount storage unit 16 in advance, the monitoring unit 17 Can reliably generate a plurality of data blocks 20 by grouping the predetermined data stored in the data storage unit 14 based on the data amount of the predetermined data stored in the data amount storage unit 16. it can.

  In addition, according to the present embodiment, a predetermined encoding process is performed for each data block 20 by making the data amount of the predetermined data included in each of the plurality of data blocks 20 generated by the monitoring unit 17 the same. The processing circuit for realizing the code calculation unit 22 that generates CRC code data corresponding to the CRC code data for determination is applied to the predetermined data included in each of the plurality of data blocks 20 generated by the monitoring unit 17. Compared with the case where the data amount of data differs, it can be configured easily.

  Further, according to the present embodiment, when one of the logic circuit unit 13 and the code calculation unit 22 is operating, the other circuit is prohibited from being operated. 13 and the code operation unit 22 can be caused to perform predetermined operations, thereby preventing a problem from occurring in the operation of at least one of the logic circuit unit 13 and the code operation unit 22.

  Further, according to the present embodiment, the predetermined signal processing operation by the logic circuit unit 13 is stopped, and the operation of generating the CRC code by the code calculation unit 22 is performed. Therefore, the logic circuit unit 13 performs the predetermined signal processing operation. Regardless of whether or not, the code calculation unit 22 can reliably generate the CRC code. As a result, the CRC code generated by the code calculation unit 22 is compared with the CRC code for determination corresponding to the CRC code, and it is determined whether the CRC code and the CRC code for determination match. The determination unit 24 can reliably determine.

  Further, according to the present embodiment, when the logic circuit unit 13 is not performing a predetermined signal processing operation, the code calculation unit 22 performs a predetermined encoding process for each data block 20 generated by the monitoring unit 17. To generate encoded data. In other words, since the operation by the logic circuit unit 13 is preferentially performed over the operation of generating the CRC code data by the code calculation unit 22, the processing speed of the predetermined signal processing operation by the logic circuit unit 13 is It is possible to prevent problems such as a delay due to the operation of generating CRC code data by the code calculation unit 22.

  Further, according to the present embodiment, when the code determination unit 24 determines that the CRC code and the determination CRC code corresponding to the CRC code do not match, the CRC determined not to match the determination CRC code The predetermined data stored in the data storage unit 14 that has contributed to the generation of the code is updated to the predetermined data transmitted from the host device 3 by the data writing unit 18. Therefore, the predetermined data stored in the data storage unit 14 that contributes to the generation of the CRC code determined not to match the CRC code for determination, in other words, causes the logic circuit unit 13 to perform a predetermined signal processing operation. Therefore, it is possible to prevent the logic circuit unit 13 from executing an inappropriate signal processing operation based on inappropriate data.

  According to the present embodiment, when the code determination unit 24 determines that the CRC code and the determination CRC code corresponding to the CRC code do not match, the code code is stored in the code storage unit 15 and the CRC code The determination CRC code determined not to match is updated to the determination CRC code acquired from the host device 3 by the monitoring unit 17. Therefore, for example, although the CRC code compared with the CRC code data for determination by the code determination unit 24 is appropriate, the CRC code for determination compared with the predetermined CRC code data by the code determination unit 24 is inappropriate. Since the data is data, the code determination unit 24 can prevent erroneous determination that the CRC code does not match the determination CRC code data corresponding to the CRC code.

  According to the present embodiment, when the code determination unit 24 determines that the CRC code and the determination CRC code corresponding to the CRC code do not match, the code code is stored in the code storage unit 15 and the CRC code The CRC code for determination that is determined not to match is updated to the CRC code for determination generated by the code calculation unit 22. Therefore, for example, although the CRC code compared with the CRC code data for determination by the code determination unit 24 is appropriate, the CRC code for determination compared with the predetermined CRC code data by the code determination unit 24 is inappropriate. Since the data is data, the code determination unit 24 can prevent erroneous determination that the CRC code does not match the determination CRC code data corresponding to the CRC code.

  Further, according to the present embodiment, when it is determined by the code determination unit 24 that the CRC code and the determination CRC code corresponding to the CRC code do not match, it is determined that the code does not match the determination CRC code. A predetermined signal processing operation by the logic circuit unit 13 based on data included in the data block 20 that has contributed to the generation of the CRC code is stopped. Therefore, the predetermined data stored in the data storage unit 14 that contributes to the generation of the CRC code determined not to match the CRC code for determination, in other words, causes the logic circuit unit 13 to perform a predetermined signal processing operation. Therefore, it is possible to prevent the logic circuit unit 13 from executing an inappropriate operation based on inappropriate data.

  Further, according to the present embodiment, when the code determination unit 24 determines that the CRC code and the CRC code for determination corresponding to the CRC code do not match, the predetermined data stored in the data storage unit 14 is added. The predetermined logic circuit unit 13 is prohibited from performing a predetermined signal processing operation, and the logic circuit unit 13 is configured to perform a predetermined signal processing operation based on predetermined data output from the logic circuit unit 13. . Therefore, the predetermined data stored in the data storage unit 14 that contributes to the generation of the CRC code determined not to match the CRC code for determination, in other words, causes the logic circuit unit 13 to perform a predetermined signal processing operation. The logic circuit unit 13 is prevented from executing an inappropriate signal processing operation based on inappropriate data, and the logic circuit unit 13 is appropriately configured based on predetermined data output from the logic circuit unit 13. Signal processing operation can be executed.

  In addition, according to the present embodiment, since CRC code data is used when performing error check of predetermined data stored in the data storage unit 14, it is possible to detect erroneous bits. As a result, it is possible to detect an error in the predetermined data with higher accuracy than in the case where an error check is performed on the predetermined data using checksum data.

  The above-described embodiment is merely an example of the present invention, and the configuration of the invention may be changed within the scope of the present invention. For example, in the above-described embodiment, the data storage unit 14 includes a plurality of registers and a plurality of RAMs. However, in another embodiment of the present invention, the data storage unit 14 includes, for example, a plurality of registers and a plurality of registers. You may be comprised by either one of several RAM.

  In the above-described embodiment, the data processing device 1 and the host device 3 are connected so as to be able to communicate with each other via a predetermined communication line network. In other embodiments of the present invention, The data processing device 1 and the host device 3 may be connected to each other so as to be capable of wireless communication via wireless radio waves.

  In the above-described embodiment, CRC code data is stored in the code storage unit 15, and predetermined data to be included in each of the plurality of data blocks 20 generated by the monitoring unit 17 is stored in the data amount storage unit 16. Although it is configured to store the data amount, in another embodiment of the present invention, the CRC code data and the data amount of the predetermined data to be included in each of the plurality of data blocks 20 are stored in a flash memory or the like. It may be configured to store in one rewritable storage medium. In another embodiment of the present invention, the data storage unit 14 may be configured to store a data amount of predetermined data to be included in each of the plurality of data blocks 20.

  In the above-described embodiment, the CRC code data is used to check for errors in the predetermined data stored in the data storage unit 14, but in other embodiments of the present invention, The checksum data obtained based on the predetermined data included in the data block 20 generated by the monitoring unit 17 may be used to check for errors in the predetermined data stored in the data storage unit 14. Good. The processing circuit of the code calculation unit 22 that generates the checksum data can be configured more simply than the processing circuit of the code calculation unit 22 when generating CRC code data that includes multiplication in the calculation formula. Further, since the checksum data can be obtained by adding predetermined data, it can be obtained more easily than the CRC code data, and can be obtained in a relatively short time than the CRC code data.

It is a block diagram which shows the structure of the data processing apparatus 1 which is one Embodiment of this invention. 7 is a flowchart illustrating an operation procedure of the monitoring unit 17 regarding an error check process of predetermined data stored in the data storage unit 14. 7 is a flowchart illustrating an operation procedure of the monitoring unit 17 regarding an error check process of predetermined data stored in the data storage unit 14. It is a flowchart which shows the operation procedure of the host apparatus 3 regarding the transmission process of predetermined data and CRC code data for determination.

Explanation of symbols

1 Data processing device 2 Sensor 3 Host device 4 Actuator 11 Multiplexer (MPX)
DESCRIPTION OF SYMBOLS 12 Analog / digital (A / D) conversion part 13 Logic circuit part 14 Data storage part 15 Code storage part 16 Data amount storage part 17 Monitoring part 18 Data writing part 20 Data block 21 Data reading part 22 Code calculation part 23 Operation code memory | storage Part 24 Code determination part

Claims (13)

Data storage means for storing predetermined data;
Data block generation means for grouping predetermined data stored in the data storage means to generate a plurality of data blocks;
A coded data storage unit for judgment for storing coded data for judgment obtained by performing a predetermined coding process for each data block to be stored in the data storage unit;
Encoded data generating means for generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means;
The encoded data generated by the encoded data generation means and the encoded data for determination corresponding to the encoded data among the encoded data for determination stored in the encoded data storage means for determination A data processing apparatus comprising: a determination unit configured to determine whether or not the encoded data matches the determination encoded data corresponding to the encoded data. A data amount storage unit that stores a data amount of predetermined data to be included in each of the plurality of data blocks generated by the data block generation unit;
The data block generation unit generates a plurality of data blocks by grouping the predetermined data stored in the data storage unit based on the data amount of the predetermined data stored in the data amount storage unit The data processing apparatus according to claim 1, wherein:   The data processing apparatus according to claim 1, wherein the data amount of the predetermined data included in each of the plurality of data blocks generated by the data block generation unit is the same. Operating means for performing a predetermined operation based on predetermined data stored in the data storage means;
And further comprising control means for controlling the encoded data generation means and the operation means,
The control means, when the operation means is operating, to perform an encoding process predetermined for each data block generated by the data block generation means to prohibit the operation to generate encoded data, The encoded data generating means is controlled, and when the encoded data generating means is operating, the operating means is controlled to prohibit a predetermined operation. The data processing apparatus according to one. Operating means for performing a predetermined operation based on predetermined data stored in the data storage means;
And further comprising control means for controlling the encoded data generation means and the operation means,
The control means controls the operation means so as to stop a predetermined operation, and performs an operation for generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means. The data processing apparatus according to claim 1, wherein the encoded data generation unit is controlled. Operating means for performing a predetermined operation based on predetermined data stored in the data storage means;
Control means for controlling the encoded data generation means,
The control means performs an operation of generating encoded data by performing a predetermined encoding process for each data block generated by the data block generating means when the operating means is not operating. 4. The data processing apparatus according to claim 1, wherein the data processing unit is controlled. When it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the predetermined data to be stored in the data storage means, and the determination encoded data Of the predetermined data to be stored in the data storage means from the apparatus having the encoded data for determination to be stored in the storage means, the encoded data determined by the determination means as not coincident with the encoded data for determination Of the predetermined data corresponding to the predetermined data that contributed to the generation of the data and the encoded data for determination to be stored in the encoded data for determination determination, the determination determined by the determination means as not matching with the encoded data Data acquisition means for acquiring encoded data for determination corresponding to the encoded data;
Updating the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the determination encoded data to the predetermined data acquired by the data acquisition means; Data update means for updating the determination encoded data stored in the determination encoded data storage means and determined not to match the encoded data to the determination encoded data acquired by the data acquisition means; The data processing apparatus according to claim 1, further comprising: If it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, from the device having the predetermined data to be stored in the data storage means, the data storage Data acquisition means for acquiring predetermined data corresponding to predetermined data that contributed to generation of encoded data determined not to match the encoded data for determination by the determining means among predetermined data to be stored in the means When,
Determination that generates encoded data for determination corresponding to encoded data for determination that is determined not to match the encoded data by the determination unit among the encoded data for determination to be stored in the encoded data storage unit for determination Encoding data generation means,
Updating the predetermined data stored in the data storage means that contributed to the generation of the encoded data determined not to match the determination encoded data to the predetermined data acquired by the data acquisition means; The determination encoded data stored in the determination encoded data storage means and determined to be inconsistent with the encoded data is updated with the determination encoded data generated by the determination encoded data generation means. The data processing apparatus according to claim 1, further comprising a data updating unit. Operating means for performing a predetermined operation based on predetermined data stored in the data storage means;
Control means for controlling the operating means,
The control means, when it is determined by the determination means that the encoded data and the determination encoded data corresponding to the encoded data do not match, the encoded data determined not to match the determination encoded data The data processing apparatus according to claim 1, wherein the operation unit is controlled so as to stop an operation based on data included in a data block that contributes to generation of the data block. Operating means for performing a predetermined operation based on predetermined data stored in the data storage means;
Control means for controlling the operating means;
A data output means for outputting predetermined data for operating the operating means when it is determined by the determining means that the encoded data and the encoded data for determination corresponding to the encoded data do not match; Including
When it is determined by the determination means that the encoded data for determination and the encoded data corresponding to the encoded data for determination do not match, the control means is based on predetermined data stored in the data storage means. The operation means is controlled so as to prohibit the predetermined operation and operate based on the predetermined data output by the data output means. The data processing apparatus described in 1.   The data processing apparatus according to claim 1, wherein the encoded data for determination and the encoded data are checksum data.   The data processing apparatus according to claim 1, wherein the encoded data for determination and the encoded data are cyclic redundancy check code data. The data storage unit stores predetermined data,
The data block generation unit groups predetermined data stored in the data storage unit to generate a plurality of data blocks,
The determination encoded data storage unit stores encoded data for determination obtained by performing a predetermined encoding process for each data block to be stored in the data storage unit,
The encoded data generation unit performs a predetermined encoding process for each data block generated by the data block generation unit to generate encoded data,
The determination unit includes a determination encoding corresponding to the encoded data among the encoded data generated by the encoded data generation unit and the determination encoded data stored in the determination encoded data storage unit. A data processing method comprising: comparing data and determining whether the encoded data matches the determination encoded data corresponding to the encoded data.

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