JPS5637778A - Producing circuit of inserted screen signal - Google Patents
Producing circuit of inserted screen signalInfo
- Publication number
- JPS5637778A JPS5637778A JP11334379A JP11334379A JPS5637778A JP S5637778 A JPS5637778 A JP S5637778A JP 11334379 A JP11334379 A JP 11334379A JP 11334379 A JP11334379 A JP 11334379A JP S5637778 A JPS5637778 A JP S5637778A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- screen
- picture signal
- reduced
- clock
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To ensure an insertion of the reduced screen into an optional position on the screen, by storing the inserted picture signal in the charge transfer type memory element and in accordance with the inserted position of the screen. CONSTITUTION:The video signal SX for inserted picture is supplied successively to the input shift registers of the charge transfer type memory elements 10A-10C which possess the input shift register, the vertical register for data storage and the output register each. Then the clock slower than the reference reading clock is applied, and at the same time a vertical shift is given. And thus the optionally reduced inserted picture signal is stored in the desired position of each of the elements 10A-10C. This picture signal is then read out by the reference clock, and the video signal SY is compounded with the inserted picture signal through the switching circuit 5. As a result, the screen formed with the signal SX can be reduced and inserted to the desired position in the screen formed with the signal SY.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11334379A JPS5637778A (en) | 1979-09-04 | 1979-09-04 | Producing circuit of inserted screen signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11334379A JPS5637778A (en) | 1979-09-04 | 1979-09-04 | Producing circuit of inserted screen signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5637778A true JPS5637778A (en) | 1981-04-11 |
Family
ID=14609832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11334379A Pending JPS5637778A (en) | 1979-09-04 | 1979-09-04 | Producing circuit of inserted screen signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5637778A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59500193A (en) * | 1982-01-12 | 1984-02-02 | エルシント,インク | electronic multiplex image device |
US4984083A (en) * | 1986-05-12 | 1991-01-08 | Hitachi, Ltd. | Image processing system |
US4998171A (en) * | 1988-07-05 | 1991-03-05 | Samsung Electronics Co., Ltd. | Automatic shift circuit for a sub-picture screen for picture-in-picture feature |
US5208660A (en) * | 1989-07-29 | 1993-05-04 | Sharp Kabushiki Kaisha | Television display apparatus having picture-in-picture display function and the method of operating the same |
-
1979
- 1979-09-04 JP JP11334379A patent/JPS5637778A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59500193A (en) * | 1982-01-12 | 1984-02-02 | エルシント,インク | electronic multiplex image device |
US4984083A (en) * | 1986-05-12 | 1991-01-08 | Hitachi, Ltd. | Image processing system |
US4998171A (en) * | 1988-07-05 | 1991-03-05 | Samsung Electronics Co., Ltd. | Automatic shift circuit for a sub-picture screen for picture-in-picture feature |
US5208660A (en) * | 1989-07-29 | 1993-05-04 | Sharp Kabushiki Kaisha | Television display apparatus having picture-in-picture display function and the method of operating the same |
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