JPS5477508A - Error retransmission control unit - Google Patents

Error retransmission control unit

Info

Publication number
JPS5477508A
JPS5477508A JP14531677A JP14531677A JPS5477508A JP S5477508 A JPS5477508 A JP S5477508A JP 14531677 A JP14531677 A JP 14531677A JP 14531677 A JP14531677 A JP 14531677A JP S5477508 A JPS5477508 A JP S5477508A
Authority
JP
Japan
Prior art keywords
error
classification code
retransmission request
data signal
given
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
JP14531677A
Other languages
Japanese (ja)
Other versions
JPS6251022B2 (en
Inventor
Yoshiji Tsuji
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14531677A priority Critical patent/JPS5477508A/en
Publication of JPS5477508A publication Critical patent/JPS5477508A/en
Publication of JPS6251022B2 publication Critical patent/JPS6251022B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To insure the continuity for the picture data by giving the retransmission request to the error of the classification code received through monitoring the classification code for the data signal period for the facsimile and the like.
CONSTITUTION: At the transmitter side, the test bit is added when the data signal is transmitted, and the detection is given to the retransmission request to store the data corresponding to the retransmission request into the memory. And at the receiver side, the error in the reception data is detected (12), and retransmission request 16 is given when the error is detected. In this case, whether the classification code to classify the data signal period is received at all times is monitored (19) at the receiver side. Thus, the retransmission request is given at nearly the same time point as the setransmission request to the error in the normal data signal in case the classification code is erroneous or no classification code is received.
COPYRIGHT: (C)1979,JPO&Japio
JP14531677A 1977-12-02 1977-12-02 Error retransmission control unit Granted JPS5477508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14531677A JPS5477508A (en) 1977-12-02 1977-12-02 Error retransmission control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14531677A JPS5477508A (en) 1977-12-02 1977-12-02 Error retransmission control unit

Publications (2)

Publication Number Publication Date
JPS5477508A true JPS5477508A (en) 1979-06-21
JPS6251022B2 JPS6251022B2 (en) 1987-10-28

Family

ID=15382333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14531677A Granted JPS5477508A (en) 1977-12-02 1977-12-02 Error retransmission control unit

Country Status (1)

Country Link
JP (1) JPS5477508A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201303U (en) * 1981-06-16 1982-12-21
JPS58198967A (en) * 1982-05-17 1983-11-19 Ricoh Co Ltd Data transmission system
JPS58201465A (en) * 1982-05-19 1983-11-24 Ricoh Co Ltd Facsimile communication system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763946A (en) * 1987-06-08 1988-08-16 Prince Corporation Visor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57201303U (en) * 1981-06-16 1982-12-21
JPS58198967A (en) * 1982-05-17 1983-11-19 Ricoh Co Ltd Data transmission system
JPS58201465A (en) * 1982-05-19 1983-11-24 Ricoh Co Ltd Facsimile communication system
JPH0158913B2 (en) * 1982-05-19 1989-12-14 Ricoh Kk

Also Published As

Publication number Publication date
JPS6251022B2 (en) 1987-10-28

Similar Documents

Publication Publication Date Title
JPS54102811A (en) Signal system
AU5590390A (en) A circuit for detecting received signal loss in a digital signal receiver
JPS55147055A (en) Data transmission system
JPS5477508A (en) Error retransmission control unit
EP0398651A3 (en) Device for processing transmitted digital video signal
JPS57119559A (en) Facsimile receiver
JPS5537005A (en) Communication mode setting system
JPS52129218A (en) Fault test system of tdma terminal station
JPS5477040A (en) Data transmitter
JPS554107A (en) Signal transmission system
JPS5741069A (en) Inter-frame encoding system
JPS5362913A (en) Self-diagnosis system for transmission device
JPS5466009A (en) Detection system for circuit fault of two-wire communication device
JPS5683197A (en) Remote controller
JPS52132649A (en) Bus anomaly detecting circuit
JPS579656A (en) Feed controller
JPS5327012A (en) Vibration sense level detecting system
JPS6011862B2 (en) signal detection circuit
JPS54918A (en) Facsimile transmission system
JPS57106261A (en) Data transmission device
JPS5686547A (en) Loop transmitter
JPS5447209A (en) Automatic train controller
JPS5357604A (en) Open-circuit type train detecting device attached to closed-circuit type ac track circuit
JPS57184349A (en) Data transmitting system
JPS57199365A (en) Facsimile receiving device