CN116204461A - Data bit width conversion method and system - Google Patents

Abstract

The invention provides a data bit width conversion method, which comprises splitting data to be converted of bit width according to preset bit width to sequentially write into a plurality of storage units, wherein the data to be converted of bit width comprises a plurality of sub data, the size of the sub data is m bytes, m is an integer larger than 0, the data are sequentially read from the plurality of storage units according to target bit width to splice so as to obtain data after the bit width conversion, the split data are stored through the plurality of storage units, when the data are read, splicing can be carried out according to the read data of the target bit width, and the size of the combinable bit width is greatly increased because the data after the data to be converted of bit width are split is smaller, so that the flexibility of the bit width conversion is increased. The invention also provides a data bit width conversion system.

Description

Data bit width conversion method and system

technical field

The invention relates to the technical field of data processing, in particular to a data bit width conversion method and system.

Background technique

In the video field, communication field, and different protocol regulations in the same field, there are many application scenarios involving bit width conversion. Different application scenarios have different byte width conversions. Taking the VBO protocol in the video field as an example, different pixel color depths, video data packets have 3byte, 4byte, and 5byte byte widths, and the serializer/deserializer The bit width of the device (SERDES) transmission interface is often fixed, and the fixed bit width is generally 2byte or 4byte. If the bit width of the SERDES transmission interface is changed according to the bit width of the video data packet, the complexity of the design will often be increased. Therefore, the functional requirements are generally realized by fixing the bit width of the SERDES transmission interface and converting the byte width of the video data packet, but However, the flexibility of bit width transformation is severely limited, and the application scenarios are severely limited.

Therefore, it is necessary to provide a novel data bit width conversion method and system to solve the above-mentioned problems existing in the prior art.

Contents of the invention

The object of the present invention is to provide a data bit width conversion method and system to increase the flexibility of bit width conversion.

In order to achieve the above object, the data bit width conversion method of the present invention includes:

Splitting the data to be converted according to the preset bit width to sequentially write into several storage units, the data to be converted by the bit width includes several sub-data, the size of the sub-data is m bytes, and m is an integer greater than 0 ;

According to the target bit width, the data is sequentially read from several storage units for splicing, so as to obtain the data after the bit width conversion.

The beneficial effect of the data bit width conversion method is that the bit width to be converted data is split according to the preset bit width to write into several storage units in sequence, the bit width to be converted data includes several sub-data, and the sub-data The size is m bytes, and m is an integer greater than 0. According to the target bit width, the data is sequentially read from several storage units for splicing to obtain the data after bit width conversion, and the split data is stored through several storage units. When reading data, the data can be read and spliced according to the target bit width, because the data becomes smaller after the data to be transformed is split, and the size of the combinable bit width is greatly increased, thereby increasing the flexibility of bit width conversion.

Optionally, the splitting of the data to be converted in bit width according to the preset bit width, so as to sequentially write into several storage units, includes:

The sub-data is split into m pieces of 8-bit data to be sequentially written into the m storage units.

Optionally, the data bit width conversion method further includes an effective data depth calculation step, and the effective data depth calculation step includes:

The effective data depth is calculated according to the writing position and the reading position.

Optionally, the data bit width conversion method further includes a writing position calculation step, and the writing position calculation step includes:

The writing position is obtained according to the quantity of sub-data written in the storage unit, the size of the sub-data and the memory size of the storage unit.

Optionally, the data bit width conversion method further includes a readout position calculation step, and the readout position calculation step includes:

The readout position is obtained according to the times of reading data from the storage unit, the target bit width and the memory size of the storage unit.

Optionally, the memory size of the storage unit is 8 bits.

The present invention also provides a data bit width conversion system, including several storage units, a write control unit and a read control unit, the write control unit is used to split the data to be converted according to the preset bit width, To sequentially write into several storage units, the data to be converted in bit width includes several sub-data, the size of the sub-data is m bytes, and m is an integer greater than 0; the read control unit is used to The data is sequentially read from several storage units and spliced to obtain the data after the bit width conversion.

The beneficial effect of the data bit width conversion system is that: the write control unit is used to split the bit width to be converted data according to the preset bit width, so as to sequentially write into several storage units, and the bit width to be converted data Including several sub-data, the size of the sub-data is m bytes, m is an integer greater than 0, and the read control unit is used to sequentially read data from several storage units according to the target bit width for splicing, so as to obtain bit The data after width conversion stores the split data through several storage units. When reading the data, the data can be read and spliced according to the target bit width. Because the data becomes smaller after the bit width is converted and the data is split, the bit width can be combined. Greatly increased, thus increasing the flexibility of bit width transformation.

Optionally, the data bit width conversion system further includes an effective data depth calculation unit, configured to calculate and obtain the effective data depth according to the writing position and the reading position.

Optionally, the data bit width conversion system further includes a write position calculation unit, which is obtained according to the number of sub-data written in the storage unit, the size of the sub-data and the memory size of the storage unit Write location.

Optionally, the data bit width conversion system further includes a readout position calculation unit, which obtains the readout position according to the number of times data is read from the storage unit, the target bit width, and the memory size of the storage unit.

Description of drawings

Fig. 1 is a structural block diagram of some embodiments of the present invention;

Fig. 2 is a flowchart of a data bit width conversion method in some embodiments of the present invention;

Fig. 3 is a schematic diagram of a data model of a data bit width conversion method in some embodiments of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. As used herein, "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items.

Aiming at the problems existing in the prior art, the embodiment of the present invention provides a data bit width conversion system. Referring to FIG. 1 , the data bit width conversion system 100 includes several storage units 101 , a write control unit 102 and a read control unit 103 . The writing control unit 102 is used for splitting the data to be converted in bit width according to the preset bit width, so as to sequentially write into several storage units 101, the data to be converted in bit width includes several sub-data, the sub-data The size is m bytes, and m is an integer greater than 0; the readout control unit 103 is used to sequentially read data from several storage units 101 according to the target bit width for splicing, so as to obtain data after bit width conversion.

In some embodiments, the data bit width conversion system further includes an effective data depth calculation unit, configured to calculate and obtain the effective data depth according to the writing position and the reading position.

In some embodiments, the data bit width conversion system further includes a write position calculation unit, according to the number of sub-data written in the storage unit, the size of the sub-data and the memory size of the storage unit, Get the write location.

In some embodiments, the data bit width conversion system further includes a readout position calculation unit, which obtains the readout position according to the number of times data is read from the storage unit, the target bit width, and the memory size of the storage unit .

In some embodiments, the memory size of the storage unit is 8 bits.

Fig. 2 is a flowchart of a data bit width conversion method in some embodiments of the present invention. With reference to Fig. 2, described data bit width conversion method comprises the following steps:

S1: Split the data to be converted in bit width according to the preset bit width, so as to sequentially write into several storage units, the data to be converted in bit width includes several sub-data, the size of the sub-data is m bytes, and m is greater than 0 an integer of

S2: Reading data from several storage units sequentially according to the target bit width for splicing, so as to obtain data after bit width conversion.

In some embodiments, the splitting the bit width to be converted data according to the preset bit width to sequentially write into several storage units includes: splitting the sub-data into m 8-bit data to sequentially write m storage units.

In some embodiments, the data bit width conversion method further includes a step of calculating an effective data depth, and the step of calculating the effective data depth includes: calculating the effective data depth according to the writing position and the reading position.

In some embodiments, the data bit width conversion method further includes a write position calculation step, and the write position calculation step includes: according to the number of sub-data written in the storage unit, the size of the sub-data and the memory size of the storage unit to obtain the write location. Specifically, the number of storage units required to store one sub-data is calculated according to the size of the sub-data and the memory size of the storage unit, and then the number of storage units required to store one sub-data is compared with the The number of sub-data written in the storage unit is multiplied to obtain the writing position.

In some embodiments, the data bit width conversion method further includes a readout position calculation step, the readout position calculation step includes: according to the number of times data is read from the storage unit, the target bit width and the storage unit The memory size of the unit, get the read position. Specifically, calculate the number of storage units read once according to the target bit width and the memory size of the storage unit, and then compare the number of storage units read once with the number of times data is read from the storage unit Multiply to get the readout position.

Fig. 3 is a schematic diagram of a data bit width conversion method in some embodiments of the present invention.

With reference to Fig. 3, the memory size of several described storage units is 8 bits, is respectively the first register mem[0], the second register mem[1], the third register mem[2], the fourth register mem[3] , the fifth register mem[4], the sixth register mem[5], the seventh register mem[6], the eighth register mem[7], the ninth register mem[8], the tenth register mem[9], the Three registers mem[10] to sixty-fourth register mem[63], the bit width to be converted data includes the first sub-data D0, the second sub-data D1, the third sub-data D2 to the n-1th sub-data Dn, In addition, the sizes of the first sub-data D0 , the second sub-data D1 , the third sub-data D2 to the n−1th sub-data Dn are all 5 bytes.

Referring to Fig. 3, when data is written into several storage units for the first time, the first sub-data D0 is split into data D0[7:0], data D0[15:8], data D0[23:16] ], data D0[31:24] and data D0[39:32], write data D0[7:0] into the first register mem[0], and write data D0[15:8] into the The second register mem[1] writes the data D0[23:16] into the third register mem[2], writes the data D0[31:24] into the fourth register mem[3], and writes the data D0[39:32] is written into the fifth register mem[4]. Now the quantity of the sub-data written in the storage unit is 1, the size of the first sub-data D0 is 5 bytes, and the memory size of several storage units is 8 bits, then 5 registers are needed Storing the first sub-data D0, the last writing position is 5×1=5 when writing data into several storage units for the first time, that is, the writing position is the fifth register mem[4]. A write pointer ①wr_ptr points to the fifth register mem[4]. Correspondingly, the initial writing position of writing data into the plurality of storage units for the second time is the sixth register mem[5].

Referring to Fig. 3, when data is written into several storage units for the second time, the second sub-data D1 is split into data D1[7:0], data D1[15:8], data D1[23:16] ], data D1[31:24] and data D1[39:32], write data D1[7:0] into the sixth register mem[5], and write data D1[15:8] into the The seventh register mem[6], write the data D1[23:16] into the eighth register mem[7], write the data D1[31:24] into the ninth register mem[8], write the data D1[39:32] is written into the tenth register mem[9]. Now the quantity of sub-data written in the storage unit is 2, the size of the first sub-data D1 is 5 bytes, and the memory size of several storage units is 8 bits, then 5 registers are needed Storing the first sub-data D1, the last writing position is 5×2=10 when writing data to several storage units for the first time, that is, the writing position is the tenth register mem[9]. The secondary write pointer ②wr_ptr points to the tenth register mem[9]. The subsequent writing of data into the storage units is the same as the first and second writing of data into the storage units, and will not be repeated here.

Referring to FIG. 3 , the target bit width is 4 bytes, and the data after the bit width conversion includes several transformed sub-data, which are respectively the first transformed sub-data New_D0, the second transformed sub-data New_D1, and the third transformed sub-data New_D2 Up to the m-1th transformed sub-data New_Dm.

Referring to Fig. 3, when reading data from several described storage units for the first time, read data D0[7:0] from the first register mem[0] and assign to data New_D0[7:0], from The data D0[15:8] read from the second register mem[1] is assigned to the data New_D0[15:8], and the data D0[23:16] is read from the third register mem[2] and assigned For the data New_D0[23:16], read the data D0[31:24] from the fourth register mem[3] and assign it to the data New_D0[31:24], then the first transformation sub-data New_D0 can be expressed as data New_D0[31:0] can also be expressed as mem[3:0] through registers. The target bit width is 4 bytes, and the memory size of several storage units is 8 bits, then the number of storage units read at one time is 4, and the number of times of reading data from the storage unit is 1, then the first The last readout position when reading data from several memory cells at a time is 4*1=4, promptly readout position is the 4th register mem[3], and the first read pointer rd_ptr 1. points to the 4th register mem [3]. Correspondingly, the starting reading position of reading data from several storage units for the second time is the fifth register mem[4].

With reference to Fig. 3, when reading data from several described storage units for the second time, read data D0[39:32] from the fifth register mem[4] and assign to data New_D1[7:0], from all The sixth register mem[5] reads data D1[7:0] and assigns it to data New_D1[15:8], reads data D1[15:8] from the seventh register mem[6] and assigns it to data New_D1 [23:16], read data D1[23:16] from the eighth register mem[7] and assign it to data New_D1[31:24], then the second converted sub-data New_D1 can be marked as data New_D1[31: 0], and can also be expressed as mem[7:4] through registers. The number of times to read data from the storage unit is 2, and the last read position when reading data from several storage units for the first time is 4×2=4, that is, the read position is the eighth register mem[ 7], the second read pointer rd_ptr② points to the eighth register mem[7]. The subsequent reading of data from several storage units is the same as the process of reading data from several storage units for the first time and the second time, and will not be repeated here.

In some embodiments, when the storage unit is read empty after being filled with data, new sub-data can be continuously written. For example, referring to FIG. 3, when the sixty-fourth register mem[63] is filled, and the data in the first register mem[0] is read, the first register mem[0] can be Used as the next register of the sixty-fourth register mem[63], continue to write new sub-data.

In some embodiments, after reading data from several storage units for the first time, after writing data to several storage units for the first time, it is also possible to write data to several storage units for the second time. After the data, it depends on whether a conversion of the data bit width can be completed.

Although the embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and changes can be made to the embodiments. However, it should be understood that such modifications and changes are within the scope and spirit of the present invention described in the claims. Furthermore, the invention described herein is capable of other embodiments and of being practiced or carried out in various ways.

Claims (10)

1. A data bit width conversion method, characterized in that, comprising: Splitting the data to be converted according to the preset bit width to sequentially write into several storage units, the data to be converted by the bit width includes several sub-data, the size of the sub-data is m bytes, and m is an integer greater than 0 ; According to the target bit width, the data is sequentially read from several storage units for splicing, so as to obtain the data after the bit width conversion. 2. The data bit width conversion method according to claim 1, wherein said data to be converted in bit width is split according to a preset bit width, so as to write into several storage units sequentially, comprising: The sub-data is split into m pieces of 8-bit data to be sequentially written into the m storage units. 3. The data bit width conversion method according to claim 1, further comprising an effective data depth calculation step, the effective data depth calculation step comprising: The effective data depth is calculated according to the writing position and the reading position. 4. The data bit width conversion method according to claim 3, further comprising a write position calculation step, the write position calculation step comprising: The writing position is obtained according to the quantity of sub-data written in the storage unit, the size of the sub-data and the memory size of the storage unit. 5. The data bit width conversion method according to claim 3, further comprising a readout position calculation step, the readout position calculation step comprising: The readout position is obtained according to the times of reading data from the storage unit, the target bit width and the memory size of the storage unit. 6. The data bit width conversion method according to any one of claims 1-5, characterized in that the memory size of the storage unit is 8 bits. 7. A data bit width conversion system, characterized in that it includes several storage units, a write control unit and a read control unit, the write control unit is used to split the bit width to be converted data according to the preset bit width , to sequentially write into several storage units, the bit width to be converted data includes several sub-data, the size of the sub-data is m bytes, and m is an integer greater than 0; the read control unit is used for according to the target The bit width sequentially reads data from several storage units and splicing to obtain the data after bit width conversion. 8. The data bit width conversion system according to claim 7, further comprising an effective data depth calculation unit, configured to calculate and obtain the effective data depth according to the writing position and the reading position. 9. The data bit width conversion system according to claim 8, further comprising a write position calculation unit, based on the number of sub-data written in the storage unit, the size of the sub-data and the The memory size of the above storage unit is obtained to obtain the write location. 10. The data bit width conversion system according to claim 8, further comprising a read position calculation unit, based on the number of times data is read from the storage unit, the target bit width, and the storage unit Memory size, get the read position.

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