JPS5746551A - Communication device - Google Patents
Communication deviceInfo
- Publication number
- JPS5746551A JPS5746551A JP12297780A JP12297780A JPS5746551A JP S5746551 A JPS5746551 A JP S5746551A JP 12297780 A JP12297780 A JP 12297780A JP 12297780 A JP12297780 A JP 12297780A JP S5746551 A JPS5746551 A JP S5746551A
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- inversion
- telephone circuit
- privacy telephone
- idc13
- 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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12297780A JPS5746551A (en) | 1980-09-05 | 1980-09-05 | Communication device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12297780A JPS5746551A (en) | 1980-09-05 | 1980-09-05 | Communication device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5746551A true JPS5746551A (en) | 1982-03-17 |
Family
ID=14849254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12297780A Pending JPS5746551A (en) | 1980-09-05 | 1980-09-05 | Communication device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5746551A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6072434A (ja) * | 1983-09-29 | 1985-04-24 | Nippon Telegr & Teleph Corp <Ntt> | スペクトラム・スクランブル受信方式 |
EP0138485A2 (en) * | 1983-09-29 | 1985-04-24 | Nippon Telegraph And Telephone Corporation | Radio reception system for a phase modulation signal |
JPS6074741A (ja) * | 1983-09-30 | 1985-04-27 | Nippon Telegr & Teleph Corp <Ntt> | スペクトラムスクランブル送信方式 |
EP0139496A2 (en) * | 1983-09-30 | 1985-05-02 | Nippon Telegraph And Telephone Corporation | A radio transmission system for a phase modulation signal |
-
1980
- 1980-09-05 JP JP12297780A patent/JPS5746551A/ja active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6072434A (ja) * | 1983-09-29 | 1985-04-24 | Nippon Telegr & Teleph Corp <Ntt> | スペクトラム・スクランブル受信方式 |
EP0138485A2 (en) * | 1983-09-29 | 1985-04-24 | Nippon Telegraph And Telephone Corporation | Radio reception system for a phase modulation signal |
JPH0461535B2 (ja) * | 1983-09-29 | 1992-10-01 | Nippon Telegraph & Telephone | |
JPS6074741A (ja) * | 1983-09-30 | 1985-04-27 | Nippon Telegr & Teleph Corp <Ntt> | スペクトラムスクランブル送信方式 |
EP0139496A2 (en) * | 1983-09-30 | 1985-05-02 | Nippon Telegraph And Telephone Corporation | A radio transmission system for a phase modulation signal |
JPH0242259B2 (ja) * | 1983-09-30 | 1990-09-21 |
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