JPS6486769A - Image display device - Google Patents
Image display deviceInfo
- Publication number
- JPS6486769A JPS6486769A JP24548687A JP24548687A JPS6486769A JP S6486769 A JPS6486769 A JP S6486769A JP 24548687 A JP24548687 A JP 24548687A JP 24548687 A JP24548687 A JP 24548687A JP S6486769 A JPS6486769 A JP S6486769A
- Authority
- JP
- Japan
- Prior art keywords
- synchronizing
- picture
- memories
- displaying
- video signal
- 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
- Studio Circuits (AREA)
Abstract
PURPOSE:To prevent a joint part from being generated on a slave picture by providing a storage means having three memories, selecting the three memories sequentially in a prescribed order synchronizing with video signals for displaying the slave picture and a master picture, writing the video signal for displaying the slave picture field by field, and reading out stored data. CONSTITUTION:A control circuit 16 selects the three memories MEM 1-3 in a memory 17 sequentially in the prescribed order synchronizing with a horizontal synchronizing signal HD1 and a vertical synchronizing signal VD1 separated from a first video signal V1 for displaying the slave picture by a synchronizing separator circuit 15. And the digital output of the first video signal V1 is written on a selected memory field by field. Also, the three memories MEM1-3 in the memory 17 are selected sequentially in the prescribed order synchronizing with synchronizing signals HD2 and VD2 separated from a second video signal for displaying the master picture, and the stored data is read out. Therefore, since to simultaneous read and write is performed in each of the memories MEM1-3, no joint part is generated on the slave picture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24548687A JPS6486769A (en) | 1987-09-29 | 1987-09-29 | Image display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24548687A JPS6486769A (en) | 1987-09-29 | 1987-09-29 | Image display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6486769A true JPS6486769A (en) | 1989-03-31 |
Family
ID=17134376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24548687A Pending JPS6486769A (en) | 1987-09-29 | 1987-09-29 | Image display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6486769A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0362687A (en) * | 1989-07-29 | 1991-03-18 | Sharp Corp | Television receiver |
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 |
US7061543B1 (en) | 1998-09-23 | 2006-06-13 | Micronas Gmbh | Method and circuit for image-in-image overlay |
-
1987
- 1987-09-29 JP JP24548687A patent/JPS6486769A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0362687A (en) * | 1989-07-29 | 1991-03-18 | Sharp Corp | Television receiver |
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 |
US7061543B1 (en) | 1998-09-23 | 2006-06-13 | Micronas Gmbh | Method and circuit for image-in-image overlay |
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