JPS55135759A - Diagnostic unit - Google Patents
Diagnostic unitInfo
- Publication number
- JPS55135759A JPS55135759A JP4399879A JP4399879A JPS55135759A JP S55135759 A JPS55135759 A JP S55135759A JP 4399879 A JP4399879 A JP 4399879A JP 4399879 A JP4399879 A JP 4399879A JP S55135759 A JPS55135759 A JP S55135759A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- pulse
- saw tooth
- trigger
- 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)
Abstract
PURPOSE: To enable to confirm the operation of the failure detection circuit of the diagnosed unit easily, by giving failure signal which is not produced normally.
CONSTITUTION: The signal from diagnosed unit is given to the terminal A and the trigger circuit 2 is operated via the amplifier 1. Based on the trigger signal 21 from the trigger circuit 2, the saw tooth wave 31 is produced from the saw tooth wave generation circuit 3. The reference voltage 51 and the saw tooth voltage 31 are compared at the comparator 6, and when the both are in agreement, the coincidence signal 61 is output. Based on this coincidence signal, the pulse 71 of a given pulse width is output from the pulse generator circuit 7. This pulse signal is delivered to the diagnosed unit from the terminal B via the drive circuit 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4399879A JPS55135759A (en) | 1979-04-11 | 1979-04-11 | Diagnostic unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4399879A JPS55135759A (en) | 1979-04-11 | 1979-04-11 | Diagnostic unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55135759A true JPS55135759A (en) | 1980-10-22 |
Family
ID=12679374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4399879A Pending JPS55135759A (en) | 1979-04-11 | 1979-04-11 | Diagnostic unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55135759A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1320640C (en) * | 2003-11-18 | 2007-06-06 | 松下电器产业株式会社 | Semiconductor wafer |
-
1979
- 1979-04-11 JP JP4399879A patent/JPS55135759A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1320640C (en) * | 2003-11-18 | 2007-06-06 | 松下电器产业株式会社 | Semiconductor wafer |
US7242080B2 (en) * | 2003-11-18 | 2007-07-10 | Matsushita Electric Industrial Co., Ltd. | Semiconductor wafer with information protection function |
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