ERROR CORRECTING METHOD, ERROR CORRECTING APPARATUS, SENDING DEVICE, RECEIVING DEVICE, AND ERROR CORRECTING PROGRAM

• US 20130080852A1
• Filed: 09/21/2012
• Published: 03/28/2013
• Est. Priority Date: 09/23/2011
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: HORITA, Satomi
• Granted Patent: US 8,887,031 B2
• Time in Patent Office: Days
• US Class Current: 714/752
• CPC Class Codes: H03M 13/2921 wherein error correction coding involves a diagonal direction

Abstract

Disclosed is an error correcting method for correcting an error of digital data, which includes a plurality of sub-frames including a plurality of block code words, including: extracting and aligning a block code word, which is included in a past sub-frame; and generating a redundant data block code word by use of a block code word, which is included in a latest sub-frame, and the aligned block code word, and adding the redundant data block code word to the latest sub-frame, wherein the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.

Claims

1. An error correcting method for correcting an error of digital data, which includes a plurality of sub-frames including a plurality of block code words, comprising:

extracting and aligning a block code word, which is included in a past sub-frame; and

generating a redundant data block code word by use of a block code word, which is included in a latest sub-frame, and the aligned block code word, and adding the redundant data block code word to the latest sub-frame, wherein

the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.

2. The error correcting method according to claim 1, wherein

each of the plurality of block code words included in the latest sub-frame is used for generating the redundant data block code word, and generating a redundant data block code word, which is included in a sub-frame different from the latest sub-frame.

3. The error correcting method according to claim 1, wherein

each of the block code words includes sub-block code words, a number of which corresponds to a multiplexing number, and wherein

a redundant data sub-block code word is generated by use of a sub-block code word, which is extracted from the past sub-frame and is aligned, and a sub-block code word, which is extracted from the latest sub-frame.

4. An error correcting apparatus to send digital data, which includes a plurality of sub-frames including a plurality of block code words, into a communication line, and to receive a received signal from the communication line, comprising:

a sending unit, including;

an interleaver, which extracts and aligns a block code word included in a past sub-frame; and

a coder, which generates a redundant data block code word by use of a block code word included in a latest sub-frame and the aligned block code word, and generates a transmission signal through adding the redundant data block code word to the latest sub-frame; and

a receiving unit, including;

a deinterleaver, which extracts and aligns a block code word included in a past sub-frame included in the received signal; and

a decoder, which carries out an error correcting process through extracting a code word and a redundant data block code word included in a latest sub-frame included in the received signal, wherein

the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.

5. The error correcting apparatus according to claim 4, wherein

each of the plurality of block code words, which are included in the latest sub-frame included in the transmission signal, is used for generating the redundant data block code word, and generating a redundant data block code word, which is included in a sub-frame different from the latest sub-frame.

6. The error correcting apparatus according to claim 4, wherein

each of the block code words includes sub-block code words, a number of which corresponds to a multiplexing number, and wherein

a redundant data sub-block code word is generated by use of a sub-block code word, which is extracted from the past sub-frame and is aligned, and a sub-block code word, which is extracted from the latest sub-frame.

7. A non-transitory computer readable medium storing a program, causing a computer to execute an error correcting process for correcting an error of digital data, which includes a plurality of sub-frames including a plurality of block code words, the error correcting process comprising:

extracting and aligning a block code word, which is included in a past sub-frame; and

generating a redundant data block code word by use of a block code word, which is included in a latest sub-frame, and the aligned block code word, and adding the redundant data block code word to the latest sub-frame, wherein

the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.

8. The medium according to claim 7, wherein

each of the plurality of block code words, which are included in the latest sub-frame included in the transmission signal, is used for generating the redundant data block code word, and a redundant data block code word, which is included in a sub-frame different from the latest sub-frame.

9. A sending device to send digital data, which includes a plurality of sub-frames including a plurality of block code words, into a communication line, comprising:

an interleaver, which extracts and aligns a block code word included in a past sub-frame; and

a coder to generate a redundant data block code word by use of a block code word, which is included in a latest sub-frame, and the aligned block code word, and to add the redundant data block code word to the latest sub-frame, wherein

the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.

10. A receiving device to receive digital data, which includes a plurality of sub-frames including a plurality of block code words, and to correct an error of the received digital data, comprising:

a deinterleaver, which extracts and aligns a block code word included in a past sub-frame included in the digital data; and

a decoder to carry out an error correcting process through extracting a code word and a redundant data block code word, which are included in a latest sub-frame included in the received signal, wherein

the redundant data block code word is used in an error correcting process for correcting an error of a sub-frame different from the latest sub-frame.

11. An error correcting apparatus to send digital data, which includes a plurality of sub-frames including a plurality of block code words, into a communication line, and to receive a received signal from the communication line, comprising:

a sending means, including;

an interleaving means for extracting and aligning a block code word included in a past sub-frame; and

a coding means for generating a redundant data block code word by use of a block code word included in a latest sub-frame and the aligned block code word, and for generating a transmission signal through adding the redundant data block code word to the latest sub-frame; and

a receiving means, including;

a deinterleaving means for extracting and aligning a block code word included in a past sub-frame included in the received signal; and

a decoding means for carrying out an error correcting process through extracting a code word and a redundant data block code word included in a latest sub-frame included in the received signal, wherein

the redundant data block code word is used for generating a redundant data block code word, which is added to a next sub-frame.