JPS5574260A - Public telephone of self-diagnosis type - Google Patents

Public telephone of self-diagnosis type

Info

Publication number
JPS5574260A
JPS5574260A JP14851578A JP14851578A JPS5574260A JP S5574260 A JPS5574260 A JP S5574260A JP 14851578 A JP14851578 A JP 14851578A JP 14851578 A JP14851578 A JP 14851578A JP S5574260 A JPS5574260 A JP S5574260A
Authority
JP
Japan
Prior art keywords
failure
cpu1
rom1
detection
hook
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
JP14851578A
Other languages
Japanese (ja)
Inventor
Toshiji Kinoshita
Hitoshi Hayamizu
Shuji Kunii
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP14851578A priority Critical patent/JPS5574260A/en
Publication of JPS5574260A publication Critical patent/JPS5574260A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)

Abstract

PURPOSE:To perform the self-diagnosis for the inspected positions after off-hook, by the failure detection for the inspected positions determined except closing of the loop circuit, and storing the program performing the failure detection of loop circuit closing after permitting the storage of coins only at no failure to the memory unit. CONSTITUTION:The control circuit MCC consists of the processor CPU1, ROM1, RAM1 and input and output circuit I/O1, and the program to perform detection of failure for inspected positions determined is stored to ROM1. Ahead the use of a phone, when off-hook is made, the signal from the hook switch H is given to CPU1 via I/O1 to activate MCC and CPU1 clears all the addresses of RAM1 and the output signals SPW-SDISI are reset via I/O1 and the initial condition is set. Next, CPU1 starts program read out from ROM1 and the detection of failure is sequentially executed for the inspected positions according to it.
JP14851578A 1978-11-30 1978-11-30 Public telephone of self-diagnosis type Pending JPS5574260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14851578A JPS5574260A (en) 1978-11-30 1978-11-30 Public telephone of self-diagnosis type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14851578A JPS5574260A (en) 1978-11-30 1978-11-30 Public telephone of self-diagnosis type

Publications (1)

Publication Number Publication Date
JPS5574260A true JPS5574260A (en) 1980-06-04

Family

ID=15454486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14851578A Pending JPS5574260A (en) 1978-11-30 1978-11-30 Public telephone of self-diagnosis type

Country Status (1)

Country Link
JP (1) JPS5574260A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720748U (en) * 1983-12-30 1995-04-11 エイ・ティ・アンド・ティ・コーポレーション Coin phone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192106A (en) * 1975-02-12 1976-08-12
JPS5354097A (en) * 1976-10-26 1978-05-17 Sanyo Jido Hanbaiki Kk Method of detecting trouble for use in automatic vending machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192106A (en) * 1975-02-12 1976-08-12
JPS5354097A (en) * 1976-10-26 1978-05-17 Sanyo Jido Hanbaiki Kk Method of detecting trouble for use in automatic vending machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720748U (en) * 1983-12-30 1995-04-11 エイ・ティ・アンド・ティ・コーポレーション Coin phone

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