JPS5518774A - Telegraphic-message security system - Google Patents
Telegraphic-message security systemInfo
- Publication number
- JPS5518774A JPS5518774A JP9196378A JP9196378A JPS5518774A JP S5518774 A JPS5518774 A JP S5518774A JP 9196378 A JP9196378 A JP 9196378A JP 9196378 A JP9196378 A JP 9196378A JP S5518774 A JPS5518774 A JP S5518774A
- Authority
- JP
- Japan
- Prior art keywords
- processor
- block
- acknowledge
- telegraphic
- unit
- 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.)
- Granted
Links
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
PURPOSE: To improve the reliability of a system by receiving a telgraphic message from a terminal equipment by a prior-stage communication controller and by composing the telegraphic massage by an information processor and then wiring it to an external memory unit before sending positive acknowledge and negative acknowledge to the terminal.
CONSTITUTION: When a telegraphic message is sent out, block by block, from terminal equipment 1, prior-stage communication control processor 2 receives ETB block 8 and sends acknowledge ACK indicating normal reception to terminal 1. Then, it receives ETB block 9 and performs the same process. When Pcu, transfer unit data from unit 2 to information processor 3, reaches a constitutional length, Pcu11 is transferred to unit 3. Processor 2, when receiving the final EXT block 10 of the telegraphic messsage, holds acknowledge to unit 1. After processor 2 forms Pcu12 and transfers it to processor 3, processor 3 composes the telegraphic message of Pcu received so far and writes it to external memory unit 4. On normal writing operation, processor 2 sends positive acknowledge ACK by the indication from processor 3 and in case of a failure of writing, it sends negative acknowledge NACK.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9196378A JPS5518774A (en) | 1978-07-27 | 1978-07-27 | Telegraphic-message security system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9196378A JPS5518774A (en) | 1978-07-27 | 1978-07-27 | Telegraphic-message security system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5518774A true JPS5518774A (en) | 1980-02-09 |
JPS576611B2 JPS576611B2 (en) | 1982-02-05 |
Family
ID=14041203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9196378A Granted JPS5518774A (en) | 1978-07-27 | 1978-07-27 | Telegraphic-message security system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518774A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6158357A (en) * | 1984-08-30 | 1986-03-25 | Fujitsu Ltd | Data communication system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59188713U (en) * | 1983-06-01 | 1984-12-14 | 株式会社デンソー | Electric heating device for automobiles |
-
1978
- 1978-07-27 JP JP9196378A patent/JPS5518774A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6158357A (en) * | 1984-08-30 | 1986-03-25 | Fujitsu Ltd | Data communication system |
Also Published As
Publication number | Publication date |
---|---|
JPS576611B2 (en) | 1982-02-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK144296A (en) | Device for processing signalling messages in a communication network using an asynchronous time technique | |
JPS5518774A (en) | Telegraphic-message security system | |
JPS5927647A (en) | Data transmitter | |
JPH0344465B2 (en) | ||
JPS5323507A (en) | Error correction system for picture information transmissio n | |
JP2601453Y2 (en) | Serial communication system | |
JPS54133859A (en) | Backing-up method of electronic computer system | |
JPS54140439A (en) | Composite computer device | |
JPS55135925A (en) | Information transfer device | |
JPS52149042A (en) | Power throw-in detection system for terminal | |
JPS54110706A (en) | Data terminal device | |
JPS556668A (en) | Interruption processing system of data transfer system | |
JPS5591018A (en) | Communication control system | |
JPS5475955A (en) | Delivery system of monitor frame at terminal unit | |
JPS59139439A (en) | Remote dumping system | |
JPS5572239A (en) | Transmission control system | |
JPS5664549A (en) | Message transmission control system | |
JPS54108504A (en) | Data transmission system on start-stop system | |
JPS57137917A (en) | Error information transfer system | |
JPS54120543A (en) | Terminal equipment | |
JPS55117368A (en) | Automatic telephone exchange | |
JPS61152142A (en) | Data transferring system | |
JPS5515542A (en) | Data transmitter | |
JPS581235A (en) | Transfer system for communication bus data | |
JPS5539982A (en) | Address control system of transmission address of local station |