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 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

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

Similar Documents

Publication Publication Date Title
US2928902A (en) Signal transmission
JPH0226902B2 (enrdf_load_stackoverflow)
JPS6234306B2 (enrdf_load_stackoverflow)
US4271331A (en) Analog processing system for real-time conversion of the frequency of analog signals
JP2597751B2 (ja) 音声変換通信装置
JPH0349221B2 (enrdf_load_stackoverflow)
JP2001308828A (ja) 無線機における秘話化方法及び秘話化装置
JP2003318665A (ja) １ビット信号増幅器およびその制御方法、ならびにそれを搭載したオーディオ機器
JPH09181795A (ja) 携帯電話機
JPS60210042A (ja) 秘話装置
JPS6234441A (ja) 電話機
KR100188983B1 (ko) 소음레벨에 따라 자동으로 음량이 조절되는 스피커음량조절회로
JPS6024743A (ja) 秘話通信回路
JPS627209A (ja) 電子ボリウムコントロ−ル方式
JP2005051289A (ja) 多チャンネルデジタルアンプ装置
JP2603564B2 (ja) 周波数ホッピング通信方式
JPS59221038A (ja) 無線電話機の盗用防止回路
SU559459A1 (ru) Устройство дл формировани сигнала стереофонического вещани
KR980007282A (ko) 저주파 물리치료 기능을 겸한 이동 무선전화기
JP2514973Y2 (ja) モニター回路
JP3051042B2 (ja) 携帯無線装置の置忘れ防止方法及び置忘れ防止機能付携帯無線装置
JPS59215146A (ja) 双方向の秘話通信方法
JP2788738B2 (ja) フルブレークイン方式及び回路
JPH0149217B2 (enrdf_load_stackoverflow)
JPH055209B2 (enrdf_load_stackoverflow)