JPS5469939A - Generating method for parity bit - Google Patents

Generating method for parity bit

Info

Publication number
JPS5469939A
JPS5469939A JP13664377A JP13664377A JPS5469939A JP S5469939 A JPS5469939 A JP S5469939A JP 13664377 A JP13664377 A JP 13664377A JP 13664377 A JP13664377 A JP 13664377A JP S5469939 A JPS5469939 A JP S5469939A
Authority
JP
Japan
Prior art keywords
decoder
circuit
unit
trouble
data generating
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.)
Granted
Application number
JP13664377A
Other languages
Japanese (ja)
Other versions
JPS5845737B2 (en
Inventor
Hironobu Yoshida
Takatoshi Yanagisawa
Naoki Koshida
Toshiro Aoki
Shinichi Maeno
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP52136643A priority Critical patent/JPS5845737B2/en
Publication of JPS5469939A publication Critical patent/JPS5469939A/en
Publication of JPS5845737B2 publication Critical patent/JPS5845737B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE: To make it possible to detect the fault of a data generating circuit by providing two data generating circuits and by using the output of one circuit for data to a controlled unit and the other for input information to a parity-bit generator.
CONSTITUTION: As data generating circuits, unit-number decoders 1 and 1' are provided; when the output of decoder 1 generating unit number "2" as input information of unit-number collating circuit 6 inside the controlled unit is supposed to get into stack trouble, information different from that of decoder 1 in the stack trouble can be obtained since decoder 1' generating information inputted to parity- bit generator 4 is normal. As a result, the check result of collating circuit 6 of the controlled unit becomes "error" . In addition, the output of decoder 1' is also "error" in case of the stack trouble, thereby detecting the trouble of the data generating circuit.
COPYRIGHT: (C)1979,JPO&Japio
JP52136643A 1977-11-16 1977-11-16 How to create parity bit Expired JPS5845737B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52136643A JPS5845737B2 (en) 1977-11-16 1977-11-16 How to create parity bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52136643A JPS5845737B2 (en) 1977-11-16 1977-11-16 How to create parity bit

Publications (2)

Publication Number Publication Date
JPS5469939A true JPS5469939A (en) 1979-06-05
JPS5845737B2 JPS5845737B2 (en) 1983-10-12

Family

ID=15180102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52136643A Expired JPS5845737B2 (en) 1977-11-16 1977-11-16 How to create parity bit

Country Status (1)

Country Link
JP (1) JPS5845737B2 (en)

Also Published As

Publication number Publication date
JPS5845737B2 (en) 1983-10-12

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