JPS5468136A - Inspection unit for logic circuit - Google Patents
Inspection unit for logic circuitInfo
- Publication number
- JPS5468136A JPS5468136A JP13552677A JP13552677A JPS5468136A JP S5468136 A JPS5468136 A JP S5468136A JP 13552677 A JP13552677 A JP 13552677A JP 13552677 A JP13552677 A JP 13552677A JP S5468136 A JPS5468136 A JP S5468136A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- logic circuit
- signal
- logic
- inspection
- 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
Links
Landscapes
- Tests Of Electronic Circuits (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To make unnecessary the inspection of respective reference circuit of the inspection unit, by using the reference logic circuit expressing the logic functions of the inspected logic circuit with equivalent state transition function and output function.
CONSTITUTION: The inspection input signal X is fed to the inspected logic circuit 2 and the reference logic circuit 3 at the same time. The circuit 2 outputs the signal Z' as the response to the signal X. On the other hand, the reference logic circuit 3 memorizes the state transition function and output function representing the logic function equivalent as the circuit 2, performs the logic operation according to the state transition function memorized to the signal X, and as a result, the signal Z expected when the circuit 2 is normally operated in accordance with the output function is outputted. Next, the signals Z' and Z are compared with the propriety judging circuit 4, and if there is any difference, the failure detection signal is caused. Accordingly, by using the circuit 3, the inspection of the respective reference logic circuit can be made unnecessary.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13552677A JPS5468136A (en) | 1977-11-10 | 1977-11-10 | Inspection unit for logic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13552677A JPS5468136A (en) | 1977-11-10 | 1977-11-10 | Inspection unit for logic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5468136A true JPS5468136A (en) | 1979-06-01 |
Family
ID=15153825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13552677A Pending JPS5468136A (en) | 1977-11-10 | 1977-11-10 | Inspection unit for logic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5468136A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614913A (en) * | 1979-07-19 | 1981-02-13 | Mitsubishi Electric Corp | Diagnosing method |
-
1977
- 1977-11-10 JP JP13552677A patent/JPS5468136A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614913A (en) * | 1979-07-19 | 1981-02-13 | Mitsubishi Electric Corp | Diagnosing method |
| JPS6252265B2 (en) * | 1979-07-19 | 1987-11-04 | Mitsubishi Electric Corp |
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