JPH05304516A - How to edit received data - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a received data editing method capable of editing received data with high processing efficiency and few errors. [Structure] Received data that has been continuously transmitted multiple times in the same format is divided into multiple blocks of data, and the received data is checked for errors in the order of reception for each block. Is used as edit data of a block, and the received data is edited by combining the data adopted for each block.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a received data editing method used for data transmission in which the error rate at the time of data transmission is not so high and data of the same format is continuously transmitted several times. The present invention relates to a received data editing method that can efficiently improve the error rate on the receiving side.

[0002]

2. Description of the Related Art Conventionally, in data transmission in which there are not many errors during transmission, when data of the same format is continuously transmitted several times, in order to reduce the error, one message The inside is divided into several blocks, and the transmission format is agreed for each block on both the transmitting and receiving sides.
There has been a received data editing method in which an agreement such as the block length and the code used in the block is limited, an error is detected for each block in the agreement on the receiving side, and data with less error is selected as received data. ..

First, the concept of the conventional received data editing method will be described. The conventional received data editing method stores received data in a table in the order of reception, and after receiving, performs an error check for each block for each received data,
The number of blocks with an error was counted, and the received data with the smallest number of error blocks was directly adopted as the edit data.

Further, the concept of the conventional received data editing method will be described in detail with reference to the examples of FIGS. 1 and 5. Figure 1
FIG. 5 is a diagram showing the correctness / incorrectness of the received data, and FIG. 5 is a conceptual diagram of the received data adopted in the conventional received data editing method. The example of FIG. 1 is an example in which transmission data is divided into 4 blocks of A, B, C and D, and data of the same format is received three times, and it is assumed that an error occurs in a block with a symbol of “x”. To do.

In the conventional received data editing method, first, the number of blocks having an error is counted for each received data and the number of error blocks is stored. In the first transmission, block B
Error, the number of error blocks is 1, the second transmission has errors in blocks A, B and C, the number of error blocks is 3, and the third transmission has errors in blocks C and D. And the number of error blocks is 2.

Next, the number of error blocks of each transmission is compared, and the received data of the first transmission having the smallest number of error blocks is adopted as the edit data. Therefore, the edit data was supposed to include one error block.

Next, the structure of the received data editing program for realizing the above-mentioned conventional received data organization method will be described with reference to FIG. FIG. 6 is a block diagram showing the outline of the functions of a conventional received data editing program.
The conventional received data editing program 1 is used by the block error detecting unit 2, the error block number comparing unit 3, the error counter 4 and the block counter 5 used by the block error detecting unit 2, and the error block number comparing unit 3. It comprises an edit data area 8, a transmission number counter 6 and a received data storage table 7 which are commonly used by the block error detection means 2 and the error block number comparison means 3.

The block error detection means 2 in the received data editing program 1 checks the received data for an error based on the agreement such as parity provision, block length, code limitation used for the blocks, etc., which is negotiated for each block in both transmission and reception. It is a means to do. The error block number comparing means 3 is a means for comparing the error block numbers counted for each received data and determining the transmission number with the smallest error block number.

The error counter 4 is a counter used when counting the number of error blocks, the block counter 5 is a counter that counts blocks in order to check each block in order, and the transmission number counter 6 is a transmission number counter. The reception data storage table 7 is a table for storing the received data and the number of error blocks of each data, and the edit data area 8 is The area that stores the data that has the smallest number of error blocks and that is adopted as the edited data.

Next, the operation of the received data editing program for implementing the above conventional received data organization method will be described with reference to FIG. FIG. 7 is a flowchart showing the flow of a conventional received data editing program.
Note that FIG. 7 shows the flow when the number of times of data transmission is three and the number of blocks of transmission data is four.

First, the "N" of the transmission number counter 6 is 1
Is substituted (100), then 1 is substituted for “A” of the block counter 5 indicating the block position (101), and 0 is substituted for “E” of the error counter 4 (102). Then, the block error detecting means 2 detects the block error (103), and if there is an error, 1 is added to "E" of the error counter 4 (105). After that, 1 is added to “A” of the block counter 5 (106), and the process 103 is performed until “A” of the block counter 5 becomes 5.
~ The process 106 is repeated.

When the "A" of the block counter 5 becomes 5, the value of "E" of the error counter 4 is stored in the received data storage table 7 (108). Then, 1 is added to "N" of the transmission number counter 6 (109), and the process 1 is performed until "N" of the transmission number counter 6 becomes 4 (110).
01 to processing 109 are repeated.

When the "N" of the transmission number counter 6 becomes 4, the error block number for each transmission is compared by the error block number comparing means 3 (111), and the received data of the transmission number with the smallest error block number is received. Is moved to and stored in the edit data area 8 (112), and the program ends.

[0014]

However, in the above conventional received data editing method, although the same data is received several times, the received data in the best transmission is adopted only in block units. Since there is no error, even if there is an error in the block in the best received data, that received data is adopted, so there is a problem that the error rate is high.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a received data editing method capable of editing received data with high processing efficiency and few errors.

[0016]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems of the prior art is a method for editing received data,
The received data is divided into a plurality of blocks of data, and error detection of the received data is performed in the order of reception for each block,
The first correct data in which no error is detected is adopted as the edit data of the block, and the edit data adopted for each block is combined to edit the received data.

[0017]

According to the present invention, the received data that is continuously transmitted a plurality of times in the same format and received is divided into a plurality of blocks of data, and an error check is performed on the received data for each block in the order of reception, The first correct data that is not used is adopted as the edit data of the block, and the received data is edited by combining the data adopted for each block, so the received data can be received without checking the error of all the received data. Can be edited, so that the processing efficiency is high, and since the correct data for each block is combined into the received data, the received data with few errors can be edited.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. First, the concept of the received data editing method of this embodiment will be described. The received data editing method of this embodiment stores received data in a table in the order of transmission numbers, performs an error check in the order of transmission numbers for each block after reception, and sets the first normal data in each block as edited data for that block. This is adopted and the edited data is organized by combining the normal data of each block.

The concept of the received data editing method of this embodiment will be described in more detail with reference to FIGS. 1 and 2 by using an example similar to the description of the prior art. FIG. 1 is a diagram showing the correctness / incorrectness of received data, and FIG. 2 is a conceptual diagram of received data reorganized by the received data editing method of this embodiment. The example in Figure 1
In the example of the case where the transmission data is divided into 4 blocks of A, B, C and D and the data of the same format is received three times,
It is assumed that an error has occurred in the block with the "x" symbol.

In the received data editing method of this embodiment, error check is first performed on block A in the order of transmission numbers, and normal data can be detected at transmission number 1. Therefore, data of transmission number 1 (first data) is transferred to block A. Adopted as edit data of. Similarly, for block B, data of transmission number 3 (third data), for block C, data of transmission number 1 (first data), and for block D, data of transmission number 1 (first data). Data) is adopted, and the above data is combined to make the final edited data. By doing so, all the blocks can be reorganized with correct data from the reception result of FIG. 1 as shown in FIG.

Next, the structure of the received data editing program for realizing the received data organization method of this embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the outline of the functions of the received data editing program of this embodiment. It should be noted that parts having the same configurations as those in FIG.

Received data editing program 1 of this embodiment
Is a block error detecting means 2 as shown in FIG.
The block error detecting means 2 comprises a block counter 5, a transmission number counter 6, a received data storage table 7 and an edit data area 8.

The block error detecting means 2 is means for performing error checking of the received data based on arrangements such as parity provision, block length, code limitation used for the blocks, etc., which are arranged for each block in both transmission and reception.

The block counter 5 is a counter that counts blocks for error checking each block in order, and the transmission number counter 6 is a counter used when counting transmission numbers for error checking in order of transmission numbers. is there. The reception data storage table 7 is a table for storing the received data, and the edit data area 8 is an area for storing the data adopted as the edit data without any error.

Next, the operation of the received data editing program for realizing the received data organization method of this embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing the flow of the received data editing program of this embodiment. Note that in FIG. 4, the number of data transmissions is set to 3 as in FIG.
The number of times the number of blocks of transmission data is 4 is shown.

First, the edit data area 8 is cleared (2
00), then the block counter 5 showing the block position
1 is substituted for “A” (201), and 1 is substituted for “N” of the transmission number counter 6 (202). Then, the block error detection means 2 detects a block error (2
03), if there is an error, 1 is added to "N" of the transmission number counter 6 (205), and the processes 203 to 206 are repeated until the number "N" of the transmission number counter 6 becomes 4 (206).

When there is no error in the block error detection (203) by the block error detection means 2, the data is adopted and moved to the edit data area (207),
The process proceeds to the next block. When "N" of the transmission number counter 6 becomes 4, or when correct data can be detected, 1 is added to "A" of the block counter 5 (208), and the counter "A" indicating the block position is displayed. Process 202 to Process 20 until the number reaches 5 (209)
Repeat 9. When the "A" of the block counter 5 becomes 5, the error check is completed for all the blocks, and as a result, the data having no error is combined and the received data is reorganized in the edit data area 8. However, for a block in which there is no error-free data, the received data is not cleared in the block 200 while it remains cleared in the process 200.

When the received data editing method of this embodiment is used, since data in which no error has occurred in each block is adopted and combined from the received data transmitted a plurality of times, all the data can be effectively utilized, The effect is that the received data with few errors can be edited.

Furthermore, an error check is performed for one block in the order of transmission numbers, and when data having no error is detected, that data is adopted as edit data for that block, and the error check is performed for the data of the subsequent transmission numbers. Since it is not performed, there is an effect that the efficiency of the program can be improved.

[0030]

According to the present invention, the received data, which is continuously transmitted a plurality of times in the same format and is received, is divided into a plurality of blocks of data, and an error check of the received data is performed for each block in the reception order. Since the first correct data without error is adopted as the edit data of the block and the received data is edited by combining the data adopted for each block, it is not necessary to check all the received data for errors. Since the received data can be edited, the processing efficiency is improved, and further, since the correct data for each block is combined into the received data, the received data with few errors can be edited.

[Brief description of drawings]

FIG. 1 is a diagram showing a received data correct / wrong situation for explaining a concept of a received data editing method according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram of received data reorganized by the received data editing method of this embodiment.

FIG. 3 is a configuration block diagram showing an outline of functions of a received data editing program of the present embodiment.

FIG. 4 is a flowchart showing a flow of a received data editing program of the present embodiment.

FIG. 5 is a conceptual diagram of received data adopted in a conventional received data editing method.

FIG. 6 is a configuration block diagram showing an outline of functions of a conventional received data editing program.

FIG. 7 is a flowchart showing a flow of a conventional received data editing program.

[Explanation of symbols]

1 ... Received data editing program, 2 ... Block error detecting means, 3 ... Error block number comparing means, 4 ... Error counter, 5 ... Block counter, 6 ... Transmission number counter, 7 ... Received data storage table, 8
… Edit data area

Claims (1)

[Claims] 1. Received data is divided into a plurality of blocks of data, an error of the received data is detected in the order of reception for each block, and the first correct data for which no error is detected is used as edit data of the block. A method of editing received data, characterized in that the received data is edited by combining the edited data adopted for each block.