JPS5477508A - Error retransmission control unit - Google Patents
Error retransmission control unitInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4763946A (en) * | 1987-06-08 | 1988-08-16 | Prince Corporation | Visor |
-
1977
- 1977-12-02 JP JP14531677A patent/JPS5477508A/en active Granted
Cited By (4)
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 |
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