JPS559262A - Detection circuit for decoder error - Google Patents
Detection circuit for decoder errorInfo
- Publication number
- JPS559262A JPS559262A JP8132378A JP8132378A JPS559262A JP S559262 A JPS559262 A JP S559262A JP 8132378 A JP8132378 A JP 8132378A JP 8132378 A JP8132378 A JP 8132378A JP S559262 A JPS559262 A JP S559262A
- Authority
- JP
- Japan
- Prior art keywords
- odd number
- output
- input
- decoder
- error
- 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
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
PURPOSE: To detect the error decoded at wrong position and the error outputted to two portions, by discriminating the input data to the decoder for even and odd number and by separating the output of even and odd number for the humming distance of the decoder output.
CONSTITUTION: The data A to D to be decoded are inputted to the decoder 100 and inputted to the first even and odd number inspection circuit 103, and the output in which the humming distance among the outputs of 0 to 15 decoded is an even number is given to the second even and odd number inspection circuit 101 as the input 205, and the output in which the humming distance is an odd number is fed to the third even and odd number inspection circuit 102 as the input 206. The circuit 103 performs the check of even and odd number for the inputs A to D, and the odd number output TD and the even number TE are respectively inputted to the circuits 101 and 102. In case of an odd number output, TD and TE are respectively 0 and 1. When the decoder output is normal, the input to the NAND circuit 104 is 1, but if in error, at least one input is 0 to display error.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8132378A JPS559262A (en) | 1978-07-03 | 1978-07-03 | Detection circuit for decoder error |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8132378A JPS559262A (en) | 1978-07-03 | 1978-07-03 | Detection circuit for decoder error |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS559262A true JPS559262A (en) | 1980-01-23 |
JPS6134301B2 JPS6134301B2 (en) | 1986-08-07 |
Family
ID=13743181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8132378A Granted JPS559262A (en) | 1978-07-03 | 1978-07-03 | Detection circuit for decoder error |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559262A (en) |
-
1978
- 1978-07-03 JP JP8132378A patent/JPS559262A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6134301B2 (en) | 1986-08-07 |
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