JPS5639640A - Telephone set mounted on travelling body - Google Patents

Telephone set mounted on travelling body

Info

Publication number
JPS5639640A
JPS5639640A JP11421279A JP11421279A JPS5639640A JP S5639640 A JPS5639640 A JP S5639640A JP 11421279 A JP11421279 A JP 11421279A JP 11421279 A JP11421279 A JP 11421279A JP S5639640 A JPS5639640 A JP S5639640A
Authority
JP
Japan
Prior art keywords
circuit
signal
mnemonic
sent
memory part
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
Application number
JP11421279A
Other languages
Japanese (ja)
Other versions
JPS5830777B2 (en
Inventor
Kensho Yoshikawa
Seizo Seki
Kozo Shin
Atsushi Omura
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.)
Nippon Telegraph and Telephone Corp
Panasonic Mobile Communications Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Matsushita Communication Industrial 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 Nippon Telegraph and Telephone Corp, Matsushita Communication Industrial Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54114212A priority Critical patent/JPS5830777B2/en
Publication of JPS5639640A publication Critical patent/JPS5639640A/en
Publication of JPS5830777B2 publication Critical patent/JPS5830777B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
    • H04M1/673—Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To permit only persons who know a mnemonic code to use a telephone set, by enabling calling only when an input mnemonic code agrees with that in a mnemonic memory part. CONSTITUTION:A mnemonic code, inputted from keyboard 9, is converted by keyboard deciphering circuit 10 into a fixed code, which is sent to CPU16, comparing circuit 12 and control circuit 13. On receiving the signal from circuit 10, circuit 13 sends a control signal to mnemonic code memory part 11. Memory part 11 receives the control signal and sends an internally stored mnemonic code to circuit 12. Circuit 12 compares the mnemonic codes sent from circuit 10 and memory part 11 and, when the two agree mutually, sends a high-level signal to FF14. By receiving this signal, FF14 is set to a high level. The output of FF14 is AND-ed with a signal from terminal 17 showing calling conditions by AND gate 15, whose output is sent to CPU16. When the high-level signal is sent from gate 15, CPU16 provides control operation so that calling will be possible.
JP54114212A 1979-09-07 1979-09-07 Mobile phone Expired JPS5830777B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54114212A JPS5830777B2 (en) 1979-09-07 1979-09-07 Mobile phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54114212A JPS5830777B2 (en) 1979-09-07 1979-09-07 Mobile phone

Publications (2)

Publication Number Publication Date
JPS5639640A true JPS5639640A (en) 1981-04-15
JPS5830777B2 JPS5830777B2 (en) 1983-07-01

Family

ID=14632013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54114212A Expired JPS5830777B2 (en) 1979-09-07 1979-09-07 Mobile phone

Country Status (1)

Country Link
JP (1) JPS5830777B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151137A (en) * 1981-12-22 1983-09-08 アルカテル・エヌ・ブイ Telephone safety system for cordless telephone
JPS59212039A (en) * 1983-05-18 1984-11-30 Matsushita Electric Ind Co Ltd Radio communication device
JPH01140802A (en) * 1987-11-27 1989-06-02 Toshiba Corp Plane antenna
US5954350A (en) * 1995-10-13 1999-09-21 Toyota Jidosha Kabushiki Kaisha Twist beam suspension

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058878U (en) * 1983-09-30 1985-04-24 興和精機株式会社 automotive engine timing light
JPS6075770A (en) * 1983-09-30 1985-04-30 Kowa Seiki Kk Structure of electric-current sensor in timing light for car

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49118305A (en) * 1973-03-12 1974-11-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49118305A (en) * 1973-03-12 1974-11-12

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151137A (en) * 1981-12-22 1983-09-08 アルカテル・エヌ・ブイ Telephone safety system for cordless telephone
JPS59212039A (en) * 1983-05-18 1984-11-30 Matsushita Electric Ind Co Ltd Radio communication device
JPH01140802A (en) * 1987-11-27 1989-06-02 Toshiba Corp Plane antenna
US5954350A (en) * 1995-10-13 1999-09-21 Toyota Jidosha Kabushiki Kaisha Twist beam suspension

Also Published As

Publication number Publication date
JPS5830777B2 (en) 1983-07-01

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