JPS55623A - Transmission system of narrow-band still picture - Google Patents
Transmission system of narrow-band still pictureInfo
- Publication number
- JPS55623A JPS55623A JP7221578A JP7221578A JPS55623A JP S55623 A JPS55623 A JP S55623A JP 7221578 A JP7221578 A JP 7221578A JP 7221578 A JP7221578 A JP 7221578A JP S55623 A JPS55623 A JP S55623A
- Authority
- JP
- Japan
- Prior art keywords
- transmission time
- control circuit
- transmission
- signals
- grasping
- 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 shorten the transmission time by lowering the quality of the picture information of the TV camera and then ensuring the quick and rough grasping.
CONSTITUTION: The spacial reduction is given to the signals sent from the A/D converter via process circuit 3 in transmission device b, and the LSB side is deleted via gradation control circuit 8 to be then supplied to memory 5 via switch circuit 4. Accordingly, the transmission time of one reduced picture frame suffices with the time of reduction ratio of the entire screen transmission time. At reception device d, the low-speed signals are received from device b and then recorded at control circuit 15 in a low speed to be then read out in a high speed. The signals read out perform D/A conversion 13 under the control of gradation control circuit 16. In such way, the transmission is possible in the transmission time of the screen reduction ratio with lowering of the picture quality, but ensuring the rough grasping satisfactorily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7221578A JPS55623A (en) | 1978-06-16 | 1978-06-16 | Transmission system of narrow-band still picture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7221578A JPS55623A (en) | 1978-06-16 | 1978-06-16 | Transmission system of narrow-band still picture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55623A true JPS55623A (en) | 1980-01-07 |
Family
ID=13482789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7221578A Pending JPS55623A (en) | 1978-06-16 | 1978-06-16 | Transmission system of narrow-band still picture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55623A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5940036A (en) * | 1982-08-27 | 1984-03-05 | Nhk Spring Co Ltd | Frictional vibration damping device |
JPS602075U (en) * | 1983-06-20 | 1985-01-09 | トキコ株式会社 | mechanical snaps |
JPS60196086A (en) * | 1984-03-19 | 1985-10-04 | Nippon Telegr & Teleph Corp <Ntt> | Communication method of narrow band moving picture |
-
1978
- 1978-06-16 JP JP7221578A patent/JPS55623A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5940036A (en) * | 1982-08-27 | 1984-03-05 | Nhk Spring Co Ltd | Frictional vibration damping device |
JPS6331012B2 (en) * | 1982-08-27 | 1988-06-22 | Nhk Spring Co Ltd | |
JPS602075U (en) * | 1983-06-20 | 1985-01-09 | トキコ株式会社 | mechanical snaps |
JPS60196086A (en) * | 1984-03-19 | 1985-10-04 | Nippon Telegr & Teleph Corp <Ntt> | Communication method of narrow band moving picture |
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