JPS55154642A - Error control unit for convolutional code - Google Patents

Error control unit for convolutional code

Info

Publication number
JPS55154642A
JPS55154642A JP6196379A JP6196379A JPS55154642A JP S55154642 A JPS55154642 A JP S55154642A JP 6196379 A JP6196379 A JP 6196379A JP 6196379 A JP6196379 A JP 6196379A JP S55154642 A JPS55154642 A JP S55154642A
Authority
JP
Japan
Prior art keywords
sample
circuit
output
convolutional code
correction
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
JP6196379A
Other languages
Japanese (ja)
Inventor
Toru Inoue
Naohiro Tomikawa
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 JP6196379A priority Critical patent/JPS55154642A/en
Publication of JPS55154642A publication Critical patent/JPS55154642A/en
Pending legal-status Critical Current

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  • Error Detection And Correction (AREA)

Abstract

PURPOSE: To prevent the degradation of reliability of information, by adding a control mode circuit for control, counter counting bits every one sample, and sample corrective function, to reduce unsafety of mis-correction by a decoder of convolutional code and to correct in sample unit.
CONSTITUTION: The input signal from a coder 10 is fed to a decoder 11 of convolutional code via a communication line 10a to form decoded convolutional code. This decoder 11 judges whether the error in an input code 10b is more than the error correction ability or less than it to output the corrected output 18a from a correction logic circuit 18. Further, A counter 12 counts the number of bits every one sample of the code 10b and sets a mode control circuit 13 reset with the output of the counter 12 at the output 19a of a missing detecting mechanism 19 incorporated in the circuit 18. The output of the circuit 13 controls a switch 17 switching a sample correction circuit 16, the error correction of signal from the first and second buffers 15a, 15b is made in sample unit and the degradation of reliability of information is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP6196379A 1979-05-18 1979-05-18 Error control unit for convolutional code Pending JPS55154642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6196379A JPS55154642A (en) 1979-05-18 1979-05-18 Error control unit for convolutional code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6196379A JPS55154642A (en) 1979-05-18 1979-05-18 Error control unit for convolutional code

Publications (1)

Publication Number Publication Date
JPS55154642A true JPS55154642A (en) 1980-12-02

Family

ID=13186337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6196379A Pending JPS55154642A (en) 1979-05-18 1979-05-18 Error control unit for convolutional code

Country Status (1)

Country Link
JP (1) JPS55154642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153349A (en) * 1983-02-21 1984-09-01 Nippon Telegr & Teleph Corp <Ntt> Error correction circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59153349A (en) * 1983-02-21 1984-09-01 Nippon Telegr & Teleph Corp <Ntt> Error correction circuit

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