JPS54156421A - Video signal sampling method for small picture in television receivers - Google Patents
Video signal sampling method for small picture in television receiversInfo
- Publication number
- JPS54156421A JPS54156421A JP6421778A JP6421778A JPS54156421A JP S54156421 A JPS54156421 A JP S54156421A JP 6421778 A JP6421778 A JP 6421778A JP 6421778 A JP6421778 A JP 6421778A JP S54156421 A JPS54156421 A JP S54156421A
- Authority
- JP
- Japan
- Prior art keywords
- sampling
- field
- small screen
- timing
- circuits
- 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
Landscapes
- Synchronizing For Television (AREA)
Abstract
PURPOSE: To enable to receive the small screen of excellent video quality, by performing the timing of sampling at the second field at the intermediate place of the sampling timing of the first field.
CONSTITUTION: TV reception signal received on the antenna 3 is inputted to the large and small screen reception circuits 1 and 2 via the brancher 4. The reception circuits 1 and 2 consist of the tuners 11 and 21, intermediate frequency amplification and detection circuits 12, 22, and synchronism separation circuits 13, 27, and the signal is displayed on the Braun tube 15 via the video amplifying circuit 14. The video signal for small screen is written in the memory 24 based on the instruction of the control circuit 28. Or, it is read out from the memory 24. Further, the range of sampling is narrowed suitably for the reproduction as a small screen, so that the screen of excellent resolution can be obtained with the same sampling frequency or memory capacity. Further, in the second field, the sampling is made in the intermediate timing as that in the first field, allowing to increase the effect.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6421778A JPS54156421A (en) | 1978-05-31 | 1978-05-31 | Video signal sampling method for small picture in television receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6421778A JPS54156421A (en) | 1978-05-31 | 1978-05-31 | Video signal sampling method for small picture in television receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54156421A true JPS54156421A (en) | 1979-12-10 |
Family
ID=13251696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6421778A Pending JPS54156421A (en) | 1978-05-31 | 1978-05-31 | Video signal sampling method for small picture in television receivers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54156421A (en) |
-
1978
- 1978-05-31 JP JP6421778A patent/JPS54156421A/en active Pending
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