-
公开(公告)号：AU538237B2
公开(公告)日：1984-08-02
申请号：AU6306280
申请日：1980-10-08
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: A method and appratus are provided for communicating a sequence of digital information words. The information words are separated into a sequence of odd information words and a sequence of even information words. The separated odd and even information words are time-displaced from each other by a predetermined amount. The odd information words are encoded in an error-correcting code, and the even information words are separately encoded in a similar error-correcting code. The encoded time-displaced odd and even information words are combined into a transmission block, and this transmission block is transmitted or recorded. In one embodiment, the information words are encoded by generating an error-correcting word in response to the odd information words and by generating an error-correcting word in response to the even information words. The respective error-correcting words are interleaved with the odd and even information words. To recover the original information words, the transmission block is received and the odd and even information words are decoded so as to correct errors therein. The time displacement between the decoded off and even information words are removed. If an information word contains an uncorrected error therein, a correct information word is approximated therefor by interpolating adjacent decoded odd or even information words so as to approximate a correct even or odd information word, respectively. A corrected sequence of information words formed of the decoded and approximated information words is recovered.
-
公开(公告)号：DE3038066A1
公开(公告)日：1981-04-23
申请号：DE3038066
申请日：1980-10-08
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: A method and appratus are provided for communicating a sequence of digital information words. The information words are separated into a sequence of odd information words and a sequence of even information words. The separated odd and even information words are time-displaced from each other by a predetermined amount. The odd information words are encoded in an error-correcting code, and the even information words are separately encoded in a similar error-correcting code. The encoded time-displaced odd and even information words are combined into a transmission block, and this transmission block is transmitted or recorded. In one embodiment, the information words are encoded by generating an error-correcting word in response to the odd information words and by generating an error-correcting word in response to the even information words. The respective error-correcting words are interleaved with the odd and even information words. To recover the original information words, the transmission block is received and the odd and even information words are decoded so as to correct errors therein. The time displacement between the decoded off and even information words are removed. If an information word contains an uncorrected error therein, a correct information word is approximated therefor by interpolating adjacent decoded odd or even information words so as to approximate a correct even or odd information word, respectively. A corrected sequence of information words formed of the decoded and approximated information words is recovered.
-
公开(公告)号：IT8025205D0
公开(公告)日：1980-10-08
申请号：IT2520580
申请日：1980-10-08
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: A method and appratus are provided for communicating a sequence of digital information words. The information words are separated into a sequence of odd information words and a sequence of even information words. The separated odd and even information words are time-displaced from each other by a predetermined amount. The odd information words are encoded in an error-correcting code, and the even information words are separately encoded in a similar error-correcting code. The encoded time-displaced odd and even information words are combined into a transmission block, and this transmission block is transmitted or recorded. In one embodiment, the information words are encoded by generating an error-correcting word in response to the odd information words and by generating an error-correcting word in response to the even information words. The respective error-correcting words are interleaved with the odd and even information words. To recover the original information words, the transmission block is received and the odd and even information words are decoded so as to correct errors therein. The time displacement between the decoded off and even information words are removed. If an information word contains an uncorrected error therein, a correct information word is approximated therefor by interpolating adjacent decoded odd or even information words so as to approximate a correct even or odd information word, respectively. A corrected sequence of information words formed of the decoded and approximated information words is recovered.
-
4.发明专利
公开(公告)号：CA1151742A
公开(公告)日：1983-08-09
申请号：CA361558
申请日：1980-10-03
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: METHOD AND APPARATUS FOR COMMUNICATING DIGITAL INFORMATION WORDS BY ERROR-CORRECTION ENCODING A method and apparatus are provided for communicating a sequence of digital information words. The information words are separated into a sequence of odd information words and a sequence of even information words. The separated odd and even information words are time-displaced from each other by a predetermined amount. The odd information words are encoded in an error-correcting code, and the even information words are separately encoded in a similar error-correcting code. The encoded time-displaced odd and even information words are combined into a transmission block, and this transmission block is transmitted or recorded. In one embodiment, the information words are encoded by generating an error-correcting word in response to the odd information words and by generating an error-correcting word in response to the even information words, The respective error-correcting words are interleaved with the odd and even information words. To recover the original information words, the transmission block is received and the odd and even information words are decoded so as to correct errors therein. The time displacement between the decoded odd and even information words are removed. If an information word contains an uncorrected error therein, a correct information word is approximated therefor by interpolating adjacent decoded odd or even information words -i-so as to approximate a correct even or odd information word, respectively. A corrected sequence of information words formed of the decoded and approximated information words is recovered. -ii-
-
5.发明专利
公开(公告)号：CH646825A5
公开(公告)日：1984-12-14
申请号：CH752580
申请日：1980-10-08
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
-
Patent Agency Ranking
公开(公告)号：FR2467510A1
公开(公告)日：1981-04-17
申请号：FR8021602
申请日：1980-10-09
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: A method and appratus are provided for communicating a sequence of digital information words. The information words are separated into a sequence of odd information words and a sequence of even information words. The separated odd and even information words are time-displaced from each other by a predetermined amount. The odd information words are encoded in an error-correcting code, and the even information words are separately encoded in a similar error-correcting code. The encoded time-displaced odd and even information words are combined into a transmission block, and this transmission block is transmitted or recorded. In one embodiment, the information words are encoded by generating an error-correcting word in response to the odd information words and by generating an error-correcting word in response to the even information words. The respective error-correcting words are interleaved with the odd and even information words. To recover the original information words, the transmission block is received and the odd and even information words are decoded so as to correct errors therein. The time displacement between the decoded off and even information words are removed. If an information word contains an uncorrected error therein, a correct information word is approximated therefor by interpolating adjacent decoded odd or even information words so as to approximate a correct even or odd information word, respectively. A corrected sequence of information words formed of the decoded and approximated information words is recovered.
-
公开(公告)号：JPS56160164A
公开(公告)日：1981-12-09
申请号：JP6200980
申请日：1980-05-10
Applicant: SONY CORP
Inventor： DOI TOSHITADA , IWAMOTO IKUO , TANAKA MASATO
IPC: H03M7/14 , G11B3/00 , G11B7/00 , G11B7/004 , G11B20/14 , G11B20/18 , H03M5/14 , H03M7/00 , H04L25/49
Abstract: PURPOSE:To maintain a high recording efficiency, by adding a redundant bit of >=2 bits having different combinations to the input data of one block and then delivering the signal having the sum value of the digital sum closest to 0 among the modulated signals. CONSTITUTION:The input data having plural bits formed into one block is processed so as to add the redundant bit to the first 2 bits in each block by the redundant bit generators 2a-2d and multiplexers 3a-3d. The output containing the redundant bit of the multiplexer is supplied to the modulators 4a-4d of the run length limited code, and each modulated output is supplied to the memories 5a-5d plus digital sum counters 6a-6d each. The output of the counter is supplied to a comparator 8. The circuit 8 detects the sum value of the digital sum that is closest to 0 among the counters 6a-6d in the timing of the end of a block, and controls the multiplexer 7 to deliver the modulated data having the sum value of the digital sum closest to 0 to a terminal 9.
-
公开(公告)号：JPS5654140A
公开(公告)日：1981-05-14
申请号：JP13031079
申请日：1979-10-09
Applicant: SONY CORP
Inventor： TANAKA MASATO , FURUKAWA SHIYUNSUKE , IWAMOTO IKUO , DOI TOSHITADA
Abstract: PURPOSE:To increase the error correction ability, by performing coding possible for error correction to the words having PCM signal and those adjacent to these and transmitting and recording these words separately in timing. CONSTITUTION:One channel PCM signal in which one sample is converted into one word, is separated into 2N sets of a plurality of series at a parallel circuit 2. The series consisting of even number words is fed to an error correction encoder 4A, and that of odd number is fed to an error correction encoder 4B via a delay circuit 5. The words obtained from the encoders 4A, 4B are fed to a detection encoder 6, where the error detection code is generated. These words and the error detection code constitute one transmission block and are recorded on magnetic tape. Further, the suitable selection of amount of delay of the circuit 5 can increase the error correcting ability at the edition point of magnetic tape.
-
公开(公告)号：JPS6346662A
公开(公告)日：1988-02-27
申请号：JP12470287
申请日：1987-05-21
Applicant: SONY CORP
Inventor： ODAKA KENTARO , SAKO YOICHIRO , IWAMOTO IKUO , DOI TOSHITADA , ROODOBUITSUKU BII FURIISU
Abstract: PURPOSE:To improve an error correcting capacity by preventing the using of a pointer to show an error position, for example, using an error correcting code to be able to correct up to two word errors and dispersing a burst error by a cross interleave. CONSTITUTION:The device is composed of an error correcting encoder constituted so that a (k) number of the checking word is formed based on a parity inspecting matrix H shown in a formula I to an (n) number of the input word. Based on the second reproduced checking word, the error correcting processing of reproducing data is executed, a pointer to shown the presence and absence of the error is set at respective words, the pointer to show the presence and absence of the error is utilized and based on the first checking word, the error correcting processing of the reproducing data is executed. By the error correcting code, correction can be executed up to two word errors in one block, the error correcting code is combined with a multiple interleave, and therefore, even for the receiving data for which random errors are comparatively many, a sufficient error correcting capacity can be obtained.
-
公开(公告)号：JPS577649A
公开(公告)日：1982-01-14
申请号：JP8265680
申请日：1980-06-17
Applicant: SONY CORP
Inventor： ODAKA KENTAROU , SAKO YOUICHIROU , IWAMOTO IKUO , DOI TOSHITADA
Abstract: PURPOSE:To improve the performance of error correction by adding a one parity bit to each word each check word of PCM data to be transmitted. CONSTITUTION:At the output of a parity interleaver 1, PCM data series of 12 channels appear, and words in them are supplied to an encoder 2 one after another to form the 1st check words P12n and Q12n. Further, 12 PCM data series and two check word series are supplied to an interleaver 3. One word each in an output data series of this interleaver 3 is supplied to an encoder 4 to form the 2nd check words R12n and S12n, and a circuit 10 adds a parity bit to each word. This data is applied to the input of en error correcting decoder, and a checker 11 makes a word-by-word parity check. On the basis of a syndrome, a decoder 17 makes an error correction, and a decoder 19 generates an error syndrome by data included in the 1st error correction block and a parity check matrix, thereby correcting the error.
-
-
-
-
-
-
-
-
-
Search Results
17
records
(took 0.022 seconds)
