JPS5518774A - Telegraphic-message security system - Google Patents

Telegraphic-message security system

Info

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
Application number
JP9196378A
Other languages
Japanese (ja)
Other versions
JPS576611B2 (en
Inventor
Yoichi Hashimoto
Ryoichi Ikeda
Kazuo Sugimoto
Kazuo Tako
Yutaka Mase
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric 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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP9196378A priority Critical patent/JPS5518774A/en
Publication of JPS5518774A publication Critical patent/JPS5518774A/en
Publication of JPS576611B2 publication Critical patent/JPS576611B2/ja
Granted legal-status Critical Current

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
JP9196378A 1978-07-27 1978-07-27 Telegraphic-message security system Granted JPS5518774A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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