JPS54141521A - Video display converter - Google Patents
Video display converterInfo
- Publication number
- JPS54141521A JPS54141521A JP4877478A JP4877478A JPS54141521A JP S54141521 A JPS54141521 A JP S54141521A JP 4877478 A JP4877478 A JP 4877478A JP 4877478 A JP4877478 A JP 4877478A JP S54141521 A JPS54141521 A JP S54141521A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- address
- video information
- video display
- video
- 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
- Closed-Circuit Television Systems (AREA)
Abstract
PURPOSE: To convert the direction of video display easily and in high speed, by providing the memory storing the video information and the means reading out the video information in opposite order, in the video display conversion unit of television game unit.
CONSTITUTION: To make display the display screen at normal state through the inversion of 180 degrees, the address of memory is inverted by 180 degrees to the normal condition, and the arrangement of a plurality of bits of one address is to be readout after being converted toward reverse direction. The video information is stored in the refresh memory 26. The inverted refresh counter 31 desingated the address of the memory 26 in opposite sequence. The video information of each address read out from the memory 26 is parallelly written in the bidirectional shift register 34 and it is read out with the clock of the clock generation circuit 32 in series time series, and the arrangement of a plurality of bits is converted in normal or reverse direction with the multiplexer 37.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4877478A JPS54141521A (en) | 1978-04-26 | 1978-04-26 | Video display converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4877478A JPS54141521A (en) | 1978-04-26 | 1978-04-26 | Video display converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54141521A true JPS54141521A (en) | 1979-11-02 |
Family
ID=12812607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4877478A Pending JPS54141521A (en) | 1978-04-26 | 1978-04-26 | Video display converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54141521A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5846978A (en) * | 1981-08-20 | 1983-03-18 | バリ・マニユフアクチユアリング・コ−ポレ−シヨン | Line buffer apparatus for displaying plural images in video game apparatus |
JPS63309085A (en) * | 1987-06-10 | 1988-12-16 | Nec Corp | Picture display device |
-
1978
- 1978-04-26 JP JP4877478A patent/JPS54141521A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5846978A (en) * | 1981-08-20 | 1983-03-18 | バリ・マニユフアクチユアリング・コ−ポレ−シヨン | Line buffer apparatus for displaying plural images in video game apparatus |
JPH0420636B2 (en) * | 1981-08-20 | 1992-04-03 | Bally Mfg Corp | |
JPS63309085A (en) * | 1987-06-10 | 1988-12-16 | Nec Corp | Picture display device |
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