JPS538002A - Privacy telephone set - Google Patents

Privacy telephone set

Info

Publication number
JPS538002A
JPS538002A JP6489876A JP6489876A JPS538002A JP S538002 A JPS538002 A JP S538002A JP 6489876 A JP6489876 A JP 6489876A JP 6489876 A JP6489876 A JP 6489876A JP S538002 A JPS538002 A JP S538002A
Authority
JP
Japan
Prior art keywords
telephone set
privacy telephone
privacy
seperating
enable
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
JP6489876A
Other languages
Japanese (ja)
Other versions
JPS5824984B2 (en
Inventor
Takahisa Oota
Shinsuke Ishikawa
Takeshi Inoue
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP51064898A priority Critical patent/JPS5824984B2/en
Publication of JPS538002A publication Critical patent/JPS538002A/en
Publication of JPS5824984B2 publication Critical patent/JPS5824984B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To enable the privacy effect while keeping audio sound band, by using the data read only memory from arbitrary parts and seperating the control signal frequency in combination.
COPYRIGHT: (C)1978,JPO&Japio
JP51064898A 1976-06-02 1976-06-02 Confidential device Expired JPS5824984B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51064898A JPS5824984B2 (en) 1976-06-02 1976-06-02 Confidential device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51064898A JPS5824984B2 (en) 1976-06-02 1976-06-02 Confidential device

Publications (2)

Publication Number Publication Date
JPS538002A true JPS538002A (en) 1978-01-25
JPS5824984B2 JPS5824984B2 (en) 1983-05-24

Family

ID=13271344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51064898A Expired JPS5824984B2 (en) 1976-06-02 1976-06-02 Confidential device

Country Status (1)

Country Link
JP (1) JPS5824984B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884554A (en) * 1981-11-14 1983-05-20 Hiroshi Kashiwagi Voice communication method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49119502A (en) * 1973-02-13 1974-11-15
JPS5096193A (en) * 1973-12-21 1975-07-31
GB1407196A (en) * 1971-11-16 1975-09-24 British Broadcasting Corp Apparatus for changing signal pitch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1407196A (en) * 1971-11-16 1975-09-24 British Broadcasting Corp Apparatus for changing signal pitch
JPS49119502A (en) * 1973-02-13 1974-11-15
JPS5096193A (en) * 1973-12-21 1975-07-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5884554A (en) * 1981-11-14 1983-05-20 Hiroshi Kashiwagi Voice communication method

Also Published As

Publication number Publication date
JPS5824984B2 (en) 1983-05-24

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