JPS543402A - Privacy communication system - Google Patents
Privacy communication systemInfo
- Publication number
- JPS543402A JPS543402A JP6854077A JP6854077A JPS543402A JP S543402 A JPS543402 A JP S543402A JP 6854077 A JP6854077 A JP 6854077A JP 6854077 A JP6854077 A JP 6854077A JP S543402 A JPS543402 A JP S543402A
- Authority
- JP
- Japan
- Prior art keywords
- privacy
- communication system
- privacy communication
- communication
- rescue
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To ensure an easy rescue communication for occurrence of a rescue accident, by adding the discrimination signal of the privacy communication, decoding the privacy when the discrimination signal is received, and then receiving the privacy only at the privacy communication time and securing a receivable state for the live signal at all times.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6854077A JPS543402A (en) | 1977-06-09 | 1977-06-09 | Privacy communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6854077A JPS543402A (en) | 1977-06-09 | 1977-06-09 | Privacy communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS543402A true JPS543402A (en) | 1979-01-11 |
Family
ID=13376669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6854077A Pending JPS543402A (en) | 1977-06-09 | 1977-06-09 | Privacy communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS543402A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5799043A (en) * | 1980-12-11 | 1982-06-19 | Matsushita Electric Ind Co Ltd | Mobile radio communication system |
JPH0481039A (en) * | 1990-07-20 | 1992-03-13 | Nippon Telegr & Teleph Corp <Ntt> | Voice ciphering device |
JPH04150339A (en) * | 1990-10-11 | 1992-05-22 | Nippon Telegr & Teleph Corp <Ntt> | Privacy call telephone set |
JPH04189045A (en) * | 1990-11-22 | 1992-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Privacy call telephone set |
-
1977
- 1977-06-09 JP JP6854077A patent/JPS543402A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5799043A (en) * | 1980-12-11 | 1982-06-19 | Matsushita Electric Ind Co Ltd | Mobile radio communication system |
JPH0481039A (en) * | 1990-07-20 | 1992-03-13 | Nippon Telegr & Teleph Corp <Ntt> | Voice ciphering device |
JPH04150339A (en) * | 1990-10-11 | 1992-05-22 | Nippon Telegr & Teleph Corp <Ntt> | Privacy call telephone set |
JPH04189045A (en) * | 1990-11-22 | 1992-07-07 | Nippon Telegr & Teleph Corp <Ntt> | Privacy call telephone set |
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