JPS5469939A - Generating method for parity bit - Google Patents
Generating method for parity bitInfo
- 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
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
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) |
-
1977
- 1977-11-16 JP JP52136643A patent/JPS5845737B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5845737B2 (en) | 1983-10-12 |
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