JP2000149442A - Signal processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a signal processing device which divides a data train for every kind of data without depending on the constitution of a data train including data of plural kinds. SOLUTION: The signal processing device 100 has an input section inputting a data train having data of plural different kinds and a header including a first information indicating constitution of data plural different kinds, a header detecting section 2 detecting the header of an inputted data train, a data dividing section 10 receiving the first information on the header detected by the header detecting section 2 and dividing a data train, and an output section 4 outputting data divided by the dividing section 10. The data dividing section of the signal processing device 100 is a conversion section 31 converting the received first information to a second information, and the second information indicates whether each of data of plural different kinds exists or not for each of data of plural different kinds. A processing procedure section of the signal processing device 100 performs process dividing a data train to each of data of plural different kinds based on the second information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio / visual (AV) device for recording video and audio signals on a recording medium, reading the recorded signal from the recording medium during reproduction, and performing necessary processing. And a signal processing device for outputting the signal to the outside.

[0002]

2. Description of the Related Art In recent years, in the field of video and audio, it has been desired to display images on a large screen and enjoy realistic sound reproduction in order to enjoy music and movies at home. As a recording medium enabling such reproduction, a recording medium such as a DVD for recording a video signal and an audio signal has been developed.

[0003] Encoded data strings are recorded on these recording media. For example, the encoded data sequence is
Each of a plurality of different types (channels) of data
It is obtained by arranging a plurality of different types of encoded data in a predetermined order.

Hereinafter, a conventional signal processing device 400 (FIG. 7)
Will be described. The signal processing device 400 divides the encoded data sequence recorded on the recording medium into a plurality of data sequences respectively corresponding to a plurality of different types (channels), and outputs the divided data sequences. It is assumed that three types of encoded data strings, that is, C channel data, LR channel data, and LRC channel data are input to the signal processing device 400. Hereinafter, the configuration and operation of the signal processing device 400 will be described after the configuration of the data sequence input to the signal processing device 400 is described.

FIGS. 4A to 4C respectively show an encoded data sequence 450 input to the signal input device 400,
4 shows the data structures of 460 and 470.

[0006] The encoded data sequence 450 includes a header 452 and a data portion 454. The header 452 stores a channel configuration number. The channel configuration number indicates the number of types of data included in the data section 454. For example, the data section 454 includes one type of data, C channel data 450 (that is, data for the center (C) channel). Therefore, the value of the channel configuration number stored in the header 452 is “1”. The correspondence between the value of the data configuration number and the channel configuration of the data string is not limited to the above case, and it is only necessary that the channel configuration number and the channel configuration correspond one-to-one.

[0007] The encoded data sequence 460 includes a header 462 and a data portion 464. The header 462 stores a channel configuration number. Data part 4
64 includes two types of data, LR channel data (ie, data for the left (L) channel and data for the right (R) channel). Therefore, the value of the channel configuration number stored in the header 462 is “2”.

[0008] The encoded data sequence 460 is, for example,
As shown in FIG. 5, it is obtained by encoding a data sequence 460L for the left (L) channel and a data sequence 460R for the right channel.

As shown in FIG. 5, a data sequence 460L for the left (L) channel includes a plurality of L channel data divided into predetermined units. In the data string 460L, the number shown after the “L channel” indicates the order of the separated data in the data string 460L.

[0010] As shown in FIG. 5, a data sequence 460R for the right (R) channel includes a plurality of R channel data divided into predetermined units. In the data string 460R, the number shown after the “R channel” indicates the order of the separated data in the data string 460R.

In the encoded data sequence 460, after the header 470, L channel data and R channel data are alternately arranged.

In FIG. 5, a broken arrow indicates a data string 4
The correspondence between the L channel data included in the 60L and the L channel data included in the encoded data sequence 460, and the R channel data included in the data sequence 460R and the R channel data included in the encoded data sequence 460 And the corresponding relationship.

Referring again to FIG. 4, encoded data sequence 470 includes header 472 and data portion 474. The header 472 stores a channel configuration number. The data section 474 includes three types of LCR channel data (ie, left (L) channel data, right (R) channel data, and center (C) channel data). . Therefore, the value of the channel configuration number stored in the header 472 is “3”.

An encoded data sequence 470 is, for example,
As shown in FIG. 6, it is obtained by encoding a data string 470L for the left (L) channel, a data string 470R for the right channel, and a data string 470C for the center (C) channel.

As shown in FIG. 6, a data string 470L for the left (L) channel includes a plurality of L channel data divided into predetermined units. In the data string 470L, the number shown after the “L channel” indicates the order of the separated data in the data string 470L.

As shown in FIG. 6, a data sequence 470R for the right (R) channel includes a plurality of R channel data divided into predetermined units. In the data string 470L, the number shown after the “R channel” indicates the order of the separated data in the data string 470R.

As shown in FIG. 6, a data string 470C for the center (C) channel includes a plurality of C-channel data divided into predetermined units. In the data string 470C, the number shown after “C channel” indicates the order of the separated data in the data string 470C.

In the encoded data sequence 470, after the header 472, L channel data, R channel data and C channel data are alternately arranged.

In FIG. 6, a broken arrow indicates a data string 4
The correspondence between the L channel data included in the 70L and the L channel data included in the encoded data string 470, and the R channel data included in the data string 470R and the R channel data included in the encoded data string 470 And C included in the data string 470C.
5 shows the correspondence between channel data and C channel data included in the encoded data string 470.

The "predetermined unit" into which each of the channel data is divided may be a predetermined time or a predetermined data size.

FIG. 7 shows the configuration of the signal processing device 400. The signal processing device 400 includes a header detection unit 2, a division unit 3, and an output unit 4.

The encoded data sequence is input to the header detection unit 2 via the input terminal 1. The encoded data sequence is a data sequence 45 shown in FIGS.
0, 460 and 470.

The header detector 2 detects a header included in the input data sequence, and further detects a value of a channel configuration number included in the header. The detected header is extracted from the data string by the header detection unit 2. Therefore, in the following, it is assumed that the header is removed from the data string that has passed through the header detection unit 2.

The dividing section 3 divides the input data string based on the value of the channel configuration number stored in the header detected by the header detecting section 2 to form a plurality of data strings corresponding to each channel. Generate

The dividing unit 3 includes a control unit 5, a switch 6,
Processing procedure units 7, 8, and 9 are included.

The control unit 5 controls the switch 6 according to the value of the channel configuration number stored in the header detected by the header detection unit 2. For example, the input data string is a data string 450 composed of C channel data.
In the case of FIG. 4A, the control unit 5 controls the switch 6 so that the data sequence is output to the processing procedure circuit 7. If the input data sequence is a data sequence 460 (FIG. 4B) composed of LR channel data, the control unit 5 controls the switch 6 so that the data sequence is output to the processing procedure circuit 8. . The input data string is LRC
A data string 470 composed of channel data (FIG. 4)
In the case of (c)), the control unit 5 controls the switch 6 so that the data sequence is output to the processing procedure unit 7.

As described above, the input data sequence is selectively output to one of the processing procedure units 7, 8, and 9 in accordance with the value of the channel configuration number included in the detected header.

The processing procedure section 7 sends a data string 450 composed of C channel data via the switch 6 (FIG. 4A).
And receives the received data string 450 (FIG. 4).
(A)) is read. The processing procedure unit 7 adjusts the format of the data sequence so that the received data sequence 450 (FIG. 4A) can be output to the output unit 4 and outputs the data sequence to the output buffer 4-1 of the output unit 4. The settings are made. This format is a format determined between the dividing unit 3 and the output unit 4.
Although not particularly described in the following description of the processing procedure units 8 and 9, it is assumed that the output setting is performed after adjusting the format of the data string to be output in any of the processing procedure units.

The processing procedure section 8 sends the LR
A data string 460 composed of channel data (FIG. 4)
(B)), and the received data sequence 460
(FIG. 4B) is read. The processing procedure section 8 first reads the L channel 1 in the L channel reading section 8-1. The L channel 1 is set in the output buffer 4-2 of the output unit 4 to output this data to the outside. Then R
The channel reading section 8-2 reads the R channel 1 and outputs this data to the outside.
R channel 1 is set in the output buffer 4-3. Thereafter, the next L channel 2 is read again by the L channel reading section 8-1, and is set in the output buffer 4-2 of the output section 4 for outputting this to the outside. The above processing is repeated in order until there is no more data.

The processing procedure section 9 first reads the L channel 1 in the L channel reading section 9-1, and outputs the data to the outside.
Set L channel 1 to 2. Next, the R channel reading unit 9-2 reads the R channel 1, and sets the R channel 1 in the output buffer 4-3 of the output unit 4 to output this data to the outside. Then, the C channel reading unit 9-3 reads the C channel 1 and sets the C channel 1 in the output buffer 4-1 of the output unit 4 to output this data to the outside. Thereafter, the next L channel 2 is read again, and is set in the output buffer of the output unit 4 for outputting the same to the outside. The above processing is repeated in order until there is no more data.

The output unit 4 includes output buffers 4-1, 4-2, and 4-3 for recording data for each channel output from the division unit 3. The number of output buffers is equal to or greater than the maximum number of channels. However, the output buffer may be a divided area in one memory, and in that case, it is sufficient that the output buffer has a divided memory area of the maximum number of channels or more.

The data is output to the output buffers 4-1, 4-2 and 4-3 of the output unit 4 and the set data is output.
The output of the data is performed based on an output command given from the outside of the output unit 4, a case where the output buffer stores a predetermined amount of data, and the like.

FIG. 8 is a flowchart showing the operation of the signal processing device 400. For example, the control unit 5 and the processing procedure units 7, 8, and 9 can be realized as software for performing the operation illustrated in FIG.

When the process is started, the value of the channel configuration number is determined. Next, data reading processing is performed according to the determined channel configuration number. That is, if it is determined that the data string is composed of C channel data, the C channel data is read and set in the output unit 4 for output. If it is determined that the data string is composed of LR channel data, the L channel data is read and set to the output unit 4 for output. Thereafter, the R channel is read and set to the output unit 4 for output. This process is repeated until all the data strings are divided. When it is determined that the data string is composed of the LRC channel data, reading and output are set in the order of the L channel data, the R channel data, and the C channel data as described above, and the processing of the data string is performed. Continue until finished.

[0035]

In the above-described signal processing based on the hardware configuration, the number of processing procedure units of the dividing unit 3 is required to be equal to the number of types of data constituting the data string. That is, the division of the input data string has to be performed by a processing procedure unit having a specific configuration for each type of data string. Therefore, the circuit configuration and processing were complicated and complicated.

In the above-described signal processing by the software configuration, it is necessary to provide a reading process and an output setting process for each data corresponding to each channel configuration number as shown in the flowchart of FIG. Therefore,
With the increase in the number of branches in the program flow, the necessity of branch determination has increased, and processing has taken time. Furthermore, an increase in program size in proportion to the number of branches cannot be avoided.

In the above-described conventional example, a case has been described in which the number of types of data constituting a channel is up to three. However, as the number of channels increases, the complexity and complexity of the hardware or software increases.

The present invention has been made in order to solve the above-mentioned problem, and it is an object of the present invention to convert configuration information of a data string included in a data string into information indicating the existence of each of a plurality of types of data. It is another object of the present invention to provide a signal processing with reduced hardware circuit scale or software processing complexity and complexity.

[0039]

According to the present invention, there is provided a signal processing apparatus for inputting a data string having a plurality of different types of data and a header including first information indicating a configuration of the plurality of different types of data. An input unit, and a header detection unit that detects the header of the input data sequence,
A data division unit that receives the first information of the header detected by the header detection unit and divides the data sequence, and an output unit that outputs the data divided by the division unit. The data division unit is a conversion unit that converts the received first information into second information, and determines whether the second information includes each of the different types of data. The conversion unit, for each of the plurality of different types of data,
And a processing procedure unit for performing a process of dividing the data string into each of the plurality of different types of data based on the information of the above.

[0040] The conversion section is configured to store the first information and the second information.
A table unit for storing the information of the first
And a table reading unit that reads the second information from the table unit based on the information.

The second information may indicate which type of data exists in the data string by using a plurality of flags respectively corresponding to the plurality of different types of data.

Each of the plurality of flags may be set to 1 when corresponding data exists, and may be set to 0 when the corresponding data does not exist.

[0043] The data division unit may determine an output position of each of the plurality of different types of divided data based on the second information.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a signal processing apparatus 100 according to an embodiment of the present invention will be described with reference to the drawings. The signal processing device 100 divides the encoded data sequence recorded on the recording medium into a plurality of data sequences respectively corresponding to a plurality of different types (channels) and outputs the plurality of data sequences. The data sequence input to the signal processing device 100 of the present invention is, for example, the data sequence shown in FIGS.

FIG. 1 is a block diagram showing the configuration of a signal processing device 100 according to the present invention. Components having functions similar to those of the conventional example are denoted by the same reference numerals.

The signal processing apparatus 100 divides the data string based on an input terminal 1 to which the data string is input, a header detector 2 for detecting the header of the data string, and header information detected by the header detector 2. Dividing part 10
And an output unit 4 for outputting the data divided by the division unit 10.

The dividing section 10 includes a processing procedure section 21 and a converting section 31 having a table reading section 32 and a table 33 which will be described in detail later.

Hereinafter, the processing of the data sequence performed by the signal processing device 100 according to the present invention will be described.

The signal processing device 100 receives a data string to be processed at the input terminal 1. The received data sequence is output to header detection unit 2.

Subsequently, the header detecting section 2 receives the data sequence input to the input terminal, detects the header included in the input data sequence, and detects the value of the channel configuration number included in the header. The header detection unit 2 outputs the detected value of the channel configuration number to the conversion unit 31 of the data division unit 10, and outputs the data sequence to the processing procedure unit 21 of the data division unit 10. The detected header is extracted from the data string by the header detection unit 2. Therefore, in the following, it is assumed that the header is removed from the data string that has passed through the header detection unit 2.

The table reading unit 32 of the conversion unit 31
The value of the channel configuration number detected by the header detector 2 is received. The table read unit 32 outputs, for example, the table read signal and the value of the received channel configuration number to the table 33, and sets the data existence flag corresponding to the received channel configuration number to the table 33.
Read from The table reading unit 32 stores the table 3
3 is output to the processing procedure section 21.

The table 33 (FIG. 1) stores a channel configuration number value and a data presence flag corresponding to the value. The table 33 receives the table read signal and the value of the channel configuration number from the table read unit 32, and stores a data existence flag corresponding to the received value of the channel configuration number in the table read unit 32.
Output to Specifically, the table 33 outputs “001” when the channel configuration number 1 is received, “110” when the channel configuration number 2 is received, and “111” when the channel configuration number 3 is received.

The data presence flag stored in the table 33 (FIG. 1) will be described below with reference to FIG.

In this embodiment, the data presence flag stored in the table 33 (FIG. 1) is binary data. The meaning of each bit of the data presence flag is as follows. That is, the leftmost bit of the data presence flag indicates whether or not an L channel exists in the data sequence input to the signal processing device 100 (FIG. 1).
For example, if the leftmost bit is “1”, it indicates that the L channel exists in the data string, and if the leftmost bit is “0”, it indicates that the L channel does not exist in the data string. . Subsequently, one bit at the center indicates whether the R channel exists, and one bit at the right end indicates whether the C channel exists. As described above, the presence or absence of each channel data is indicated by whether these bit values are “1” or “0”. Therefore, for example, when the data presence flag is “110”, it means that the data string includes the data of the L and R channels, but does not include the data of the C channel. From the above description, it can be said that the data presence flag indicates whether or not each of the plurality of different types of data exists in the data string for each of the plurality of different types of data.

Referring again to FIG. 1, the processing procedure unit 21
The data read flag is received from the table read circuit 32, and the data string input from the header detector 2 is received. The processing procedure unit 21 divides the data sequence into each channel data based on the received data presence flag, and outputs the data sequence to the output unit 4 for each channel data.

Hereinafter, the operation of the processing procedure section 21 will be described in detail.

The processing procedure section 21 first reads the leftmost bit of the received data presence flag.

When the value of the leftmost bit is "1", it means that data of the L channel exists in the data string. In this case, the processing procedure unit 21 separates only the data of the L channel from the received data string, and converts the L channel data into an output buffer for storing the L channel data in the output unit 4, for example, the output buffer 4-2.
Output to When the output of the L channel data is completed,
The processing procedure unit 21 prepares the position of the output buffer of the output unit 4 to be output for the next channel buffer (R channel) in preparation for the data of the channel (R channel in this embodiment) which can be separated from the data sequence. The position is changed to the position of the output buffer for data storage, for example, the output buffer 4-3).

On the other hand, when the value of the leftmost bit is “0”, the processing procedure unit 21 determines that the data sequence does not include the data of the L channel. Then, in the same manner as the above-described operation after data output, the position of the output buffer of the output unit 4 to be output is changed to the position of the buffer for the next channel in preparation for the data of the channel that can be separated next.

When the processing for the leftmost bit of the data presence flag is completed, the processing procedure section 21 reads the next bit (central bit). In the present embodiment,
The center bit is a bit indicating whether or not data of the R channel exists. When the value is “1”, the processing procedure unit 21 separates the R channel from the data string and outputs the R channel to the R channel data storage output buffer 4-3 of the output unit 4 as described above. Thereafter, the position of the output buffer of the output unit 4 to be output is changed to the position of the buffer for the next channel, for example, the output buffer 4-1 for storing C channel data, in preparation for data that can be separated next from the data string. .

If the value of the center bit of the data presence flag is "0", the processing procedure section 21 sets the position to be output to the output buffer without reading the data string to the next channel data output buffer. Change to the position.

When the processing for the center bit of the data presence flag is completed, the processing procedure section 21 reads the rightmost bit indicating whether or not data of the C channel exists, and according to the value, as described above. Separation of channel data, output to the output buffer for storing C channel data, change of the position of the output buffer, or change of the position of the output buffer. In this case, the change of the position of the output buffer means that the position of the output buffer is changed again to the position of the output buffer for storing the L channel data. With the change of the output buffer position, the processing procedure unit 21
Adjusts the read position of the data presence flag to the leftmost bit indicating the presence / absence of L channel data again.
Thereafter, the above operation is repeated.

In this embodiment, the data presence flag is set to 3
The case of bits has been described. Needless to say, even in the case where the data presence flag is composed of more bit strings, it is determined whether the value of each bit is “0” or “1”,
Subsequent processing is performed in the same procedure as described above.

The output unit 4 receives the data for each channel output from the division unit 10 in each channel data storage output buffer 4-1, 4-2, or 4-3. Each channel data received by the output buffer is thereafter output to the outside of the signal processing device 100 for each channel data or collectively. The output of each channel data from the output unit 4 is performed when a predetermined time has elapsed, when the output unit 4 receives a signal prompting the output, or when a predetermined amount of data is stored in the output buffer. However, the present invention is not limited to these cases, and may be performed based on appropriate conditions.

FIG. 3 shows a flowchart for realizing the processing in the dividing section 10 (FIG. 1). According to this flowchart, the processing in the above-described division unit 10 (FIG. 1) realized as hardware, that is, the processing for dividing a data string for each channel data, can be realized as software.

As a premise for explaining the processing procedure of the flowchart shown in FIG. 3, since FIG. 3 is a flowchart describing only the processing procedure for realizing the processing in the dividing unit 10 (FIG. 1), it should be processed. It is assumed that the header of the data string is read in advance, and the channel configuration number is held. Other processes and the processes described below can realize all the above processes by software executed using a DSP (Digital Signal Processor) or the like.

First, when the process is started, step 300
At, a table is loaded into a data storage means, for example, a memory.

Subsequently, in step 301, a data presence flag corresponding to the channel configuration number of the input header is read from the table. In step 302, whether the data presence flag corresponding to the channel configuration number is "1" or "0" Is determined. This determination is made from the leftmost bit of the data presence flag, for example, as in the above-described example.

When it is determined that the data presence flag is "1", it indicates that the data of the channel corresponding to the bit exists in the data string, and the data of the channel is stored in the data storage means ( (Not shown) (step 303). Here, the data storage means may be, for example, a DRAM, a hard disk, or the like.

Thereafter, the read data is set for output from the output unit (step 304). This may include, for example, processing when audio data is output as an audio signal via an amplifier. Then, it reaches step 305 described below.

When it is determined that the data presence flag is "0", it indicates that the data of the channel corresponding to the bit does not exist in the data string. In that case, or when the processing in step 304 is completed, the processing of the data string is performed by the output unit 4 to be output in preparation for the data of the channel that can be separated next from the data string.
Is moved to the position of the next channel buffer (step 305). The output buffer may be a computer memory allocated for each channel data. The memory may be physically one or two or more. To move the position of the channel buffer means to set, for example, an address position where channel data is to be stored as a write address, but it is only necessary to set an output address appropriately.

Thereafter, it is determined whether or not all the input data strings are divided for each data type (step 3).
06). When the data division is completed, the process ends. If the data division has not been completed, the flow is repeated from step 302.

According to the above processing, it is understood that the present invention can be applied not only to hardware but also to software.

In the embodiment of the present invention, the channel configuration numbers including the types of channels shown in FIG. 7 are shown.
However, even if the type of data included in the data string increases, a table may be created in which the number of channel configuration numbers is associated with a data presence flag having a bit number corresponding to the required number of channels.

For example, it is assumed that the channels in the above example are of three types: L, R and C channels. However, to achieve a surround effect, the left front of the user, front right, rear left, rear right, L _f for respectively outputting a sound of the center _{position, R f, L s, R} s, is C-channel may be used . Alternatively, an LFE channel for obtaining a low frequency effect may be included.

Alternatively, the different types of data described above are not limited to data for each channel of acoustic data. For example, different sampling frequencies (48 kHz
z, 96 kHz, etc.) and / or data with a different number of quantization bits (16-bit data, 24-bit data, etc.).

Furthermore, although the different types of data described above are audio data channels, they are not limited to audio data. For example, instead of data relating to audio data, each angle video relating to multi-angle reproduction using a DVD may be used.

[0078]

According to the present invention, a data sequence is divided for each data type based on information indicating which type of data is present in the data sequence. Therefore, since the data string only needs to be divided based on whether or not the data exists, it is not necessary to provide a processing procedure unit having a specific configuration for each type of data string.
As a result, the circuit size of the signal processing device can be reduced in the case of the hardware configuration, and the signal processing with reduced processing complexity can be performed in the case of the software configuration.

[Brief description of the drawings]

FIG. 1 is a hardware block diagram of a signal processing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing contents of a table 33 included in a dividing unit 10 according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating a process of dividing a data string according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating a data sequence input to the signal processing device of the present invention.

FIG. 5 shows data strings 460L and 460R before being encoded.
FIG. 14 is a diagram showing a correspondence relationship between the data sequence 460 and the encoded data sequence 460.

FIG. 6 shows data strings 470L and 470 before being encoded.
FIG. 14 is a diagram illustrating a correspondence relationship between R and 470C and a data string 470 after encoding.

FIG. 7 is a hardware block diagram of a conventional signal processing device.

FIG. 8 is a flowchart showing a process of dividing a data string in conventional signal processing.

[Explanation of symbols]

 Reference Signs List 1 input terminal 2 header detection unit 4 output unit 10 division unit 21 processing procedure unit 31 conversion unit 32 table reading unit 33 table

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masahiro Sueyoshi 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 72) Inventor Takeshi Fujita 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Akihisa Kawamura 1006 Odoma Kadoma, Kadoma City, Osaka Pref. 1006, Kadoma, Kazuma, Matsushita Electric Industrial Co., Ltd. BC06 CC04 DE14 DE52 DE54 FG18 GK11 5D110 AA17 AA26 AA28 DA04 DC01 DE01

Claims (5)

[Claims] An input unit for inputting a data string having a plurality of different types of data and a header including first information indicating a configuration of the different types of data; A header detection unit that detects the header, a data division unit that receives the first information of the header detected by the header detection unit, and divides the data string, and outputs data divided by the division unit An output unit that converts the received first information into second information, wherein the second information is different from the first information. A conversion unit that indicates whether or not each of the plurality of types of data is present for each of the plurality of different types of data, based on the second information, That a plurality of types of processing for dividing each of the data performed and a processing procedure unit, the signal processing apparatus. 2. The information processing apparatus according to claim 1, wherein the conversion unit is configured to store the first information and the second information in association with each other, and to convert the second information from the table based on the first information. The signal processing device according to claim 1, further comprising: a table reading unit that reads out the data. 3. The second information indicates, by a plurality of flags respectively corresponding to the plurality of different types of data, which type of data exists in the data string. The signal processing device according to claim 1. 4. The signal processing device according to claim 3, wherein each of the plurality of flags is set to 1 when corresponding data exists, and set to 0 when no corresponding data exists. 5. The signal processing device according to claim 1, wherein the data division unit determines an output position of each of the plurality of different types of divided data based on the second information.