JPH10241300A - Data recording medium and its processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the management quality of a data recording medium by making data strings for reading the two data strings of a plurality of data strings in a card data recording medium different from data for reading the plurality of data strings and data for reading the other data strings. SOLUTION: A determination reference data string S1 detects the time of positioning a detector in the data string D1 of a recording medium. A determination reference data string S12 detects the time of positioning the detector between the data strings D1 and D2 . Similarly, thereafter, a determination reference data string S2 detects the time of positioning the detector in the data string D2 of the recording medium, and a determination reference data string S23 detects the time of positioning the detector between the data strings D2 and D3 . Thus, by comparing the read data strings with the determination reference data stings, the positioning of the detector in a target data string is easily detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a data recording medium,
And a data recording medium processing apparatus capable of effectively determining a positional relationship between a data sequence recorded on the data recording medium and a reader such as a magnetic head.

[0002]

2. Description of the Related Art Conventionally, for example, in a card-shaped data recording medium, a data sequence for managing the data recording medium is referred to as a main body of the data recording medium. It has been proposed to provide This data sequence is recorded as magnetic data that can be read by a detector such as a magnetic head or a Hall element along the transport direction of the card in the card processor, or an optical bar that can be read optically. It is recorded as a code by printing.

[0003] The data series recorded in this way is:
When a data recording medium is inserted into a processor, it is read through a detector or a barcode scanner and is used for management such as for authenticity determination of the data recording medium.

[0004]

In recent years, in order to improve the quality of management of a data recording medium, it is conceivable to provide a plurality of management data sequences. There is a problem as to whether the quality of management of the data recording medium can be improved by providing such a relationship. In addition, when such a plurality of data sequences are used, when the recorded data sequence is read by a detector such as a magnetic head, it is necessary to accurately grasp the positional relationship between the data sequence and the detector.

That is, the mounting position of the detector is slightly different for each card processing machine, and the data sequence position recorded on the data recording medium is slightly different for each data recording medium. At the time of reading, there is a problem that accurate data reading cannot be performed unless the positional relationship between the two is accurately grasped.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a data recording medium capable of improving the quality of data recording medium management and provide a magnetic recording medium. It is an object of the present invention to provide a data recording medium processing device capable of accurately grasping the relationship between the position of a detector such as a head and the position of a data series.

[0007]

In order to achieve the above object, a data recording medium according to the present invention has different data recorded at predetermined intervals along the transport direction of the data recording medium. A data recording medium having a plurality of data series, wherein a data series when reading between two data series of the plurality of data series is data of the plurality of data series and another data series. It is characterized in that it is different from the data when the interval is read.

[0008] The data recording medium processing apparatus according to the present invention comprises:
In order to achieve the above object, a plurality of data sequences in which different data are recorded at predetermined intervals along a transport direction of a data recording medium, and a detector for reading the data sequences are provided. What is claimed is: 1. A data recording medium processing device comprising a data position determining means for determining a positional relationship, comprising: data read when said detector is positioned in each of said plurality of data sequences; A storage means for storing data read when positioned over two data series; a data read via the detector; and a data stored in the storage means. The position of the detector is determined by a predetermined data sequence or the predetermined target data by the comparing means for comparing the two data. It is characterized by having a decision control means for determining to be located in the middle adjacent the data series to series and its purpose.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a data recording medium processing device according to an embodiment of the present invention.

In the data recording medium C, a data sequence for managing the data recording medium along the transport direction (see the arrow shown in the figure) when the data recording medium C is inserted into a card processor (not shown) is previously stored. Has been recorded.

The data sequence D includes a plurality (four in the illustrated example) of different magnetic data recorded along the transport direction of the data recording medium C and at different intervals from each other. D1 to D4. The data series D will be described later in detail.

A detector H comprising a magnetic head or a Hall element is incorporated in a card processor and is configured to be able to read a data sequence D of a data recording medium C inserted in the card processor. Have been. In addition,
Which series of data in the data series D is to be read depends on
It is determined in advance by the management method of the data recording medium C. For example, depending on the management method, the detector H
Is set at a position at which the data series D1 can be read, or at a position at which the data series D4 can be read. In some cases, a plurality of detectors H are provided to read a plurality of data series. Further, in some cases, the detector H is fixed, the recording position of the data sequence D on the data recording medium C is set at a predetermined position, and the set specific data sequence can be read.

The reading device R processes the signal read by the detector H. Similar to a known processing device, the reading device R analogously amplifies the read signal read by the detector H and performs processing such as waveform processing. Analog processing for performing further,
The reading device R includes a CPU that converts a read analog signal into a digital signal and determines the position of the detector H and the data sequence D.

FIG. 2A shows a digital signal obtained by reading data recorded in each data series D1 to D4 of a data recording medium C via a detector H and processing the read signal. It is an example of data. That is, each of the data series D1 to D4 of the data recording medium C includes FIG.
This means that the write data sequence shown in (a) (hereinafter referred to as “data sequence” including this write data sequence) is recorded in advance.

Each data series D1 to D4 is recorded under the following rules. (1) Each bit of each adjacent data series D1 to D4 is
Synchronously formed. (2) The intervals between adjacent data series D1 to D4 are formed such that the information distance (Hamming distance) is within a predetermined range. (3) When the detector H is located between two data series (for example, between the data series D1 and D2), the bits of the different parts of the data of both data series are not accurately read, It is formed so that it can be detected that it is straddling between the series. In other words, at least one of the data series can be recognized (in the above example, the data series D1 or D2 can be recognized).
Is formed. (4) The data sequence read with the detector H positioned between the two data sequences, that is, the bit that is incorrectly read takes an arbitrary value (the value of xx in FIG. 2C described later). Also,
It is formed so that the same pattern does not exist in other data series.

The example of the data series shown in FIG. 2A and FIG. 3A described later is an example that satisfies the above four conditions.

When four data series D1 to D4 shown in FIG. 2A are recorded in advance on the data recording medium C, the data recording medium C is inserted into the card processor and the detector H is activated. It is assumed that the data is read through

When the read data corresponds to any one of the data series D1 to D4 shown in FIG. 2A, the detector H exactly matches the corresponding data series. Therefore, it is determined that the detector H matches the predetermined target data series, and the relative position between the detector H and the data recording medium is determined.

However, the read data is shown in FIG.
In some cases, a data sequence that does not match any of the data sequences D1 to D4, such as a read data sequence d1 or a read data sequence d2 shown in FIG. In FIG. 2B, the read data series d1 is obtained when the detector H is read between the data series D1 and D2 of the data recording medium C and read.
Means that the detector H is the data series D2, D
It is the one when it was located between 3 and read.

That is, when the detector H is located at an intermediate position between the data series, the data in the portion surrounded by the chain line in FIG. It is shown that it is possible.

FIG. 2C shows a reference data sequence for determination stored in a memory (not shown) of the reading device R in advance. Of these, the reference data series for determination S1 is the detector H
Is detected in the data sequence D1 of the data recording medium C, and the determination reference data sequence S12 detects when the detector H is positioned between the data sequences D1 and D2 of the data recording medium C. It is for. Similarly, the determination reference data series S2 detects when the detector H is positioned at the data series D2 of the data recording medium C, and the determination reference data series S23 indicates that the detector H This is for detecting when it is located between the C data series D2 and D3.

Therefore, by comparing the read data sequence with the reference data sequence for determination, it can be easily detected that the detector H is located at or deviated from the target data sequence.

For example, although the detector H is set to read the data sequence D1 of the data recording medium C, when the read data sequence d1 of FIG. , The data series D1 of the data recording medium C,
It is determined that it is located between D2. If the position of the detector H and the data sequence of the data recording medium C can be determined as described above, it becomes possible to correct the read data to the data of the predetermined data sequence.

FIG. 3 (a) shows eight data sequences D1 to D8 on a data recording medium C in a 2-bit gray code system.
Is an example in which is recorded. And FIG.
A read data sequence d when the detector H is read between the data sequences D1 and D2 among the data sequences D1 to D8 thus recorded is shown.

Also in such a case, the position of the data sequence between the detector H and the data recording medium C can be determined using the reference data sequence for determination shown in FIG. it can.

FIG. 4 shows an example in which the position determination of the data series of the detector H and the data recording medium C is performed in an analog manner.

Here, the data recording medium C is
As shown in (a), three data series D1 to D3
Is recorded. Then, the detector H receives the data series D2
, D3, the output waveform of the detector H is as shown in FIG.
This shows that a reading pattern r as shown in FIG. That is, as shown in FIG. 4B, the rise and fall of the waveform of the portion surrounded by the chain line in FIG. 4A are small.

Therefore, by storing in advance the reading pattern when the detector H is located in the middle of each of the data series D1 to D3, the detector H and the data series D1 to D3 are stored.
And the position can be determined.

In the above example, the data sequence recorded on the data recording medium C is an example of magnetic data, but the data sequence may be a bar code. In this case, a barcode scanner is used as a detector.

In the above example, a card-shaped data recording medium has been described. However, the data recording medium is a rotating disk-shaped one such as a floppy disk. In this case, the data series is arranged along the radial direction. Be recorded.

Further, in the data recording medium C described above, the entire track has a plurality of data series D. However, like the data recording medium C 'shown in FIG. May be a data recording section D 'in which predetermined data common to the data recording section is recorded.

[0032]

The data recording medium according to the present invention is a data recording medium having a plurality of data sequences in which different data are recorded at predetermined intervals from each other along the transport direction of the data recording medium. Since the data series when reading between the two data series of the plurality of data series is different from the data when reading between the plurality of data series and the data between other data series, The quality of management of the data recording medium can be improved.

The data recording medium processing device according to the present invention comprises:
Data position determination for determining the positional relationship between a plurality of data sequences in which different data are recorded at predetermined intervals along the transport direction of the data recording medium and a detector for reading the data sequences A data recording medium processing device comprising: a data read when the detector is positioned at each of the plurality of data sequences; and a data readout between two data sequences among the plurality of data sequences. A storage means for storing data read when it is positioned over the storage means; a comparison means for comparing data read via the detector with data stored in the storage means; According to the coincidence state of the two data, the position of the detector is determined to be a predetermined target data sequence, or the predetermined target data sequence and the target data sequence. Since consisting of determination control means for determining to be located in the middle adjacent the data sequence, it is possible to accurately determine the position of the reader and the data series.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a data recording medium processing device according to an embodiment of the present invention.

FIG. 2 is a specific example of a write data sequence, a read data sequence, and a reference data sequence for determination.

FIG. 3 is another specific example of a write data sequence, a read data sequence, and a reference data sequence for determination.

FIG. 4 is a specific example of a write pattern and a read pattern.

FIG. 5 is a front view showing another example of the data recording medium.

[Explanation of symbols]

 C Data recording medium D, D1 to D8 Data series D 'Data recording section H Detector R Reader

Claims (2)

[Claims] 1. A data recording medium having a plurality of data sequences in which different data are recorded at predetermined intervals along a conveying direction of a main body of the data recording medium, wherein the plurality of data sequences are recorded. The data sequence when reading between two data sequences among the sequences is different from the data of the plurality of data sequences and the data when reading between the other two data sequences. Data recording medium. 2. A plurality of data sequences in which different data are recorded at predetermined intervals from one another along a transport direction of a main body of a data recording medium, and a position of a detector for reading the data sequences. A data recording medium processing device comprising a data position determining means for determining a relationship, wherein the data read when the detector is located at each of the plurality of data sequences, and the plurality of data sequences A storage unit that stores data read when it is positioned over two data series; and a unit that stores data read via the detector and data stored in the storage unit. The position of the detector is determined to be a predetermined target data sequence or the predetermined target data sequence by the comparing means for comparing, and the coincidence state of both the compared data. And a decision control means for deciding that it is located in the middle adjacent to the target data sequence.