JPH0226902B2 - - Google Patents

Info

Publication number
JPH0226902B2
JPH0226902B2 JP59280680A JP28068084A JPH0226902B2 JP H0226902 B2 JPH0226902 B2 JP H0226902B2 JP 59280680 A JP59280680 A JP 59280680A JP 28068084 A JP28068084 A JP 28068084A JP H0226902 B2 JPH0226902 B2 JP H0226902B2
Authority
JP
Japan
Prior art keywords
secret
frequency
secret code
code
speech
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.)
Expired - Lifetime
Application number
JP59280680A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61156936A (ja
Inventor
Yoshisuke Chiba
Masashi Mizuno
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.)
Japan Radio Co Ltd
Original Assignee
Japan Radio 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 Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP28068084A priority Critical patent/JPS61156936A/ja
Publication of JPS61156936A publication Critical patent/JPS61156936A/ja
Publication of JPH0226902B2 publication Critical patent/JPH0226902B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
JP28068084A 1984-12-27 1984-12-27 秘話装置 Granted JPS61156936A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28068084A JPS61156936A (ja) 1984-12-27 1984-12-27 秘話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28068084A JPS61156936A (ja) 1984-12-27 1984-12-27 秘話装置

Publications (2)

Publication Number Publication Date
JPS61156936A JPS61156936A (ja) 1986-07-16
JPH0226902B2 true JPH0226902B2 (cs) 1990-06-13

Family

ID=17628434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28068084A Granted JPS61156936A (ja) 1984-12-27 1984-12-27 秘話装置

Country Status (1)

Country Link
JP (1) JPS61156936A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827507A (en) * 1987-06-19 1989-05-02 Motorola, Inc. Duplex analog scrambler
JPH0221739A (ja) * 1988-07-11 1990-01-24 Fuji Facom Corp 通信回線における部外者侵入防止方式

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59125134A (ja) * 1982-12-29 1984-07-19 Japan Radio Co Ltd 秘話装置

Also Published As

Publication number Publication date
JPS61156936A (ja) 1986-07-16

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