JPS6462044A - Digital radio communication equipment - Google Patents
Digital radio communication equipmentInfo
- Publication number
- JPS6462044A JPS6462044A JP62219518A JP21951887A JPS6462044A JP S6462044 A JPS6462044 A JP S6462044A JP 62219518 A JP62219518 A JP 62219518A JP 21951887 A JP21951887 A JP 21951887A JP S6462044 A JPS6462044 A JP S6462044A
- Authority
- JP
- Japan
- Prior art keywords
- cryptographic code
- code data
- cryptographic
- signal
- decoder
- 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
Abstract
PURPOSE:To automatically change a cryptographic code data by receiving a cryptographic code data distribution signal, detecting a cryptographic code data from the signal and changing the detected cryptographic code data with the cryptographic code data in a memory. CONSTITUTION:A received wave is demodulated into a digital signal string by a demodulator 14 and decoded into a cryptographic code of a cryptographic digital signal string according to a cryptographic code data in a memory 17. When a decoder 20 detects a cryptographic code revision signal a1 of a header A and an individual selection signal a2 belonging to its own station from the digital signal string decoded by a cryptographic decoder 15, the cryptographic code data B is decoded and the cryptographic code data B is stored in a temporary storage memory 21. In detecting an end signal C, the decoder 20 transfers the cryptographic code data stored in the temporary storage memory 21 to the cryptographic code storage memory 17 via an interface circuit 22. Thus, the automatic rewrite of the new/old cryptographic code data is attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219518A JPS6462044A (en) | 1987-09-02 | 1987-09-02 | Digital radio communication equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219518A JPS6462044A (en) | 1987-09-02 | 1987-09-02 | Digital radio communication equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6462044A true JPS6462044A (en) | 1989-03-08 |
Family
ID=16736724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62219518A Pending JPS6462044A (en) | 1987-09-02 | 1987-09-02 | Digital radio communication equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6462044A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8552854B2 (en) | 2002-03-26 | 2013-10-08 | Somfy | Method for reprogramming bidirectional objects |
US20170026185A1 (en) * | 2015-07-21 | 2017-01-26 | Entrust, Inc. | Method and apparatus for providing secure communication among constrained devices |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170244A (en) * | 1982-03-31 | 1983-10-06 | Nec Corp | Encryption communication system |
JPS59178040A (en) * | 1983-03-29 | 1984-10-09 | Fujitsu Ltd | System for distributing and processing key information |
JPS60224348A (en) * | 1984-04-21 | 1985-11-08 | Sony Corp | Transmitter and receiver of digital communication |
-
1987
- 1987-09-02 JP JP62219518A patent/JPS6462044A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58170244A (en) * | 1982-03-31 | 1983-10-06 | Nec Corp | Encryption communication system |
JPS59178040A (en) * | 1983-03-29 | 1984-10-09 | Fujitsu Ltd | System for distributing and processing key information |
JPS60224348A (en) * | 1984-04-21 | 1985-11-08 | Sony Corp | Transmitter and receiver of digital communication |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8552854B2 (en) | 2002-03-26 | 2013-10-08 | Somfy | Method for reprogramming bidirectional objects |
US20170026185A1 (en) * | 2015-07-21 | 2017-01-26 | Entrust, Inc. | Method and apparatus for providing secure communication among constrained devices |
US10728043B2 (en) * | 2015-07-21 | 2020-07-28 | Entrust, Inc. | Method and apparatus for providing secure communication among constrained devices |
US11102013B2 (en) | 2015-07-21 | 2021-08-24 | Entrust, Inc. | Method and apparatus for providing secure communication among constrained devices |
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