JPS54122034A - Reproductive screen coloring display unit - Google Patents
Reproductive screen coloring display unitInfo
- Publication number
- JPS54122034A JPS54122034A JP2941078A JP2941078A JPS54122034A JP S54122034 A JPS54122034 A JP S54122034A JP 2941078 A JP2941078 A JP 2941078A JP 2941078 A JP2941078 A JP 2941078A JP S54122034 A JPS54122034 A JP S54122034A
- Authority
- JP
- Japan
- Prior art keywords
- color
- signal
- decoder
- bus line
- reproductive
- 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 make it possible to color pattern display on a screen easily and stably, by providing a color circuit.
CONSTITUTION: Central processing unit CPU, read-only memory ROM, random access memory RAM 20, and a decoder are comined by an address bus line and a data bus line; a regenerative pattern signal is obtained by shift register 24 from RAM20 and then applied to color circuit 25. On the basis of the oscillation frequency signal of oscillator 12, decoder 41 divides the pattern signal into a luminance signal component and various color signal components, which are applied to gate circuits 42 to 44 which gate those components selectively. Further, outputs of gate circuits 42 to 44 are mixed by mixer 27 to obtain a color video signal.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2941078A JPS54122034A (en) | 1978-03-15 | 1978-03-15 | Reproductive screen coloring display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2941078A JPS54122034A (en) | 1978-03-15 | 1978-03-15 | Reproductive screen coloring display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54122034A true JPS54122034A (en) | 1979-09-21 |
Family
ID=12275348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2941078A Pending JPS54122034A (en) | 1978-03-15 | 1978-03-15 | Reproductive screen coloring display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54122034A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02278287A (en) * | 1989-04-20 | 1990-11-14 | Fujitsu Ltd | Video signal synthesizing system |
JPH02278288A (en) * | 1989-04-20 | 1990-11-14 | Fujitsu Ltd | Video signal synthesizing system |
-
1978
- 1978-03-15 JP JP2941078A patent/JPS54122034A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02278287A (en) * | 1989-04-20 | 1990-11-14 | Fujitsu Ltd | Video signal synthesizing system |
JPH02278288A (en) * | 1989-04-20 | 1990-11-14 | Fujitsu Ltd | Video signal synthesizing system |
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