JPS55135759A - Diagnostic unit - Google Patents

Diagnostic unit

Info

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
Application number
JP4399879A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nagayama
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4399879A priority Critical patent/JPS55135759A/en
Publication of JPS55135759A publication Critical patent/JPS55135759A/en
Pending legal-status Critical Current

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  • 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
JP4399879A 1979-04-11 1979-04-11 Diagnostic unit Pending JPS55135759A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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