JPS568946A - Coding-decoding system for concatenate code - Google Patents

Coding-decoding system for concatenate code

Info

Publication number
JPS568946A
JPS568946A JP8604879A JP8604879A JPS568946A JP S568946 A JPS568946 A JP S568946A JP 8604879 A JP8604879 A JP 8604879A JP 8604879 A JP8604879 A JP 8604879A JP S568946 A JPS568946 A JP S568946A
Authority
JP
Japan
Prior art keywords
codes
parity
error
coder
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8604879A
Other languages
Japanese (ja)
Inventor
Toru Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8604879A priority Critical patent/JPS568946A/en
Publication of JPS568946A publication Critical patent/JPS568946A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Correction Of Errors (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE:To inhibit decoding of external codes by judging whether error position calculation information agrees with disappearance position information by calculating the error position by a decoder for external codes, and then by regarding dissidence as error overlooking beyond the performance of correcting. CONSTITUTION:Original information is input to coder 22 for lead and Solomon codes, for example, of a coder for external code C2. Next, even-parity adding unit 23, for example, of the coder for internal code C1 adds one-bit parity in the row direction. This operation is repeated several times to generate a code word of rectangular and concatenate codes. The concatenate codes are recorded on a communication path or recording medium 24 and reproduced again at a reproduction side in a digital signal, so that even-parity inspection unit 26, for example, of a decoder for internal code C1 will check whether the parity check sum of every row is even. When an error is detected as a result of the parity check, it is used as disappearance position information.
JP8604879A 1979-07-04 1979-07-04 Coding-decoding system for concatenate code Pending JPS568946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8604879A JPS568946A (en) 1979-07-04 1979-07-04 Coding-decoding system for concatenate code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8604879A JPS568946A (en) 1979-07-04 1979-07-04 Coding-decoding system for concatenate code

Publications (1)

Publication Number Publication Date
JPS568946A true JPS568946A (en) 1981-01-29

Family

ID=13875789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8604879A Pending JPS568946A (en) 1979-07-04 1979-07-04 Coding-decoding system for concatenate code

Country Status (1)

Country Link
JP (1) JPS568946A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856209A (en) * 1981-09-30 1983-04-02 Hitachi Ltd Error flag processor for each frame
JPS58173933A (en) * 1982-04-05 1983-10-12 Nippon Hoso Kyokai <Nhk> Transmission system of code signal
JPH03172026A (en) * 1989-11-30 1991-07-25 Nec Corp Encoding/decoding system
JPH0774656A (en) * 1993-11-15 1995-03-17 Hitachi Ltd System for correcting code error
JPH07325434A (en) * 1994-05-30 1995-12-12 Fuji Xerox Co Ltd Liquid developer for electrostatic photography and image forming method using the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856209A (en) * 1981-09-30 1983-04-02 Hitachi Ltd Error flag processor for each frame
JPH0418389B2 (en) * 1981-09-30 1992-03-27 Hitachi Ltd
JPS58173933A (en) * 1982-04-05 1983-10-12 Nippon Hoso Kyokai <Nhk> Transmission system of code signal
JPH0546131B2 (en) * 1982-04-05 1993-07-13 Japan Broadcasting Corp
JPH03172026A (en) * 1989-11-30 1991-07-25 Nec Corp Encoding/decoding system
JPH0774656A (en) * 1993-11-15 1995-03-17 Hitachi Ltd System for correcting code error
JPH07325434A (en) * 1994-05-30 1995-12-12 Fuji Xerox Co Ltd Liquid developer for electrostatic photography and image forming method using the same
JP3575061B2 (en) * 1994-05-30 2004-10-06 富士ゼロックス株式会社 Electrostatographic developer and image forming method using the same

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