JPS5453922A - Luminance modulation system of video display unit - Google Patents
Luminance modulation system of video display unitInfo
- Publication number
- JPS5453922A JPS5453922A JP11995777A JP11995777A JPS5453922A JP S5453922 A JPS5453922 A JP S5453922A JP 11995777 A JP11995777 A JP 11995777A JP 11995777 A JP11995777 A JP 11995777A JP S5453922 A JPS5453922 A JP S5453922A
- Authority
- JP
- Japan
- Prior art keywords
- luminance
- video signal
- converter
- instruction value
- modulation
- 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.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
PURPOSE: To establish the display unit of high performance which can increase the number of display tones without increasing the scale of the luminance modulation circuit.
CONSTITUTION: In the device having the display element displaying picture, scanning circuit scanning each video element of the display element and the luminance modulator performing luminous modulation into the n tones (n>2) for the luminance of each element of the display element, and designating the degree of modulation of the luminance modulator depending on the video signal, the selection each field of the luminance instruction value K is made with the luminance instruction value K of an odd and even number of fields as shown in table 1 depending on the size of the video signal V. The AD converter AD inputting the video signal V is provided with this circuit, outputting the outputs 20 to 23 of binary number of the video signal V with the converter AD. On the other hand, vertical synchronizing signal SV is fed to FF, and the selection signal EV of a half frequency is outputted and it fed to the full adder FA together with the outputs 20 to 23 of the converter AD. Further, the luminance instruction value K is outputted to the output of the adder FA as shown in table 1
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995777A JPS5453922A (en) | 1977-10-07 | 1977-10-07 | Luminance modulation system of video display unit |
FR7828647A FR2405603A1 (en) | 1977-10-07 | 1978-10-06 | IMAGE PRESENTATION DEVICE |
GB7839652A GB2006569A (en) | 1977-10-07 | 1978-10-06 | A flat panel image display system |
DE19782843706 DE2843706A1 (en) | 1977-10-07 | 1978-10-06 | IMAGE PLAYBACK SYSTEM |
NL7810125A NL7810125A (en) | 1977-10-07 | 1978-10-06 | IMAGE DISPLAY SYSTEM. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995777A JPS5453922A (en) | 1977-10-07 | 1977-10-07 | Luminance modulation system of video display unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5453922A true JPS5453922A (en) | 1979-04-27 |
JPS567344B2 JPS567344B2 (en) | 1981-02-17 |
Family
ID=14774381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11995777A Granted JPS5453922A (en) | 1977-10-07 | 1977-10-07 | Luminance modulation system of video display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5453922A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6160089A (en) * | 1984-08-31 | 1986-03-27 | Casio Comput Co Ltd | Picture display device |
JPS61234673A (en) * | 1985-04-10 | 1986-10-18 | Casio Comput Co Ltd | Picture display device |
JPS61246792A (en) * | 1985-03-25 | 1986-11-04 | スタンレー電気株式会社 | Image display unit |
JPS62201790U (en) * | 1986-06-13 | 1987-12-23 | ||
JPS63182695A (en) * | 1987-01-23 | 1988-07-27 | ホシデン株式会社 | Liquid crystal display device |
JPH021812A (en) * | 1988-06-13 | 1990-01-08 | Ascii Corp | Gradation control method, gradation controller, and multigradational display system |
JPH0262590A (en) * | 1988-08-29 | 1990-03-02 | Hitachi Ltd | Liquid crystal display device |
JPH02124593A (en) * | 1988-06-18 | 1990-05-11 | Hitachi Ltd | Gradation display device |
JPH02127618A (en) * | 1988-11-08 | 1990-05-16 | Yamaha Corp | Liquid crystal display circuit |
JPH0358020A (en) * | 1989-07-27 | 1991-03-13 | Sharp Corp | Liquid crystal display device |
JPH03132692A (en) * | 1989-10-18 | 1991-06-06 | Matsushita Electric Ind Co Ltd | Method for driving liquid crystal display device and its driving circuit |
JPH0436793A (en) * | 1990-05-31 | 1992-02-06 | Seiko Instr Inc | Gradation display circuit for display device |
JPH0573005A (en) * | 1991-09-13 | 1993-03-26 | Casio Comput Co Ltd | Picture display device |
JPH09120273A (en) * | 1996-11-01 | 1997-05-06 | Hitachi Ltd | Display circuit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923742U (en) * | 1982-08-03 | 1984-02-14 | 応用電機株式会社 | Rubber bands for shorting MOS semiconductors |
JP2010061723A (en) * | 2008-09-02 | 2010-03-18 | Toppan Printing Co Ltd | Semiconductor memory device |
-
1977
- 1977-10-07 JP JP11995777A patent/JPS5453922A/en active Granted
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6160089A (en) * | 1984-08-31 | 1986-03-27 | Casio Comput Co Ltd | Picture display device |
JPS61246792A (en) * | 1985-03-25 | 1986-11-04 | スタンレー電気株式会社 | Image display unit |
JPS61234673A (en) * | 1985-04-10 | 1986-10-18 | Casio Comput Co Ltd | Picture display device |
JPS62201790U (en) * | 1986-06-13 | 1987-12-23 | ||
JPS63182695A (en) * | 1987-01-23 | 1988-07-27 | ホシデン株式会社 | Liquid crystal display device |
JPH021812A (en) * | 1988-06-13 | 1990-01-08 | Ascii Corp | Gradation control method, gradation controller, and multigradational display system |
JPH02124593A (en) * | 1988-06-18 | 1990-05-11 | Hitachi Ltd | Gradation display device |
JPH0262590A (en) * | 1988-08-29 | 1990-03-02 | Hitachi Ltd | Liquid crystal display device |
JPH02127618A (en) * | 1988-11-08 | 1990-05-16 | Yamaha Corp | Liquid crystal display circuit |
JPH0358020A (en) * | 1989-07-27 | 1991-03-13 | Sharp Corp | Liquid crystal display device |
JPH03132692A (en) * | 1989-10-18 | 1991-06-06 | Matsushita Electric Ind Co Ltd | Method for driving liquid crystal display device and its driving circuit |
JPH0436793A (en) * | 1990-05-31 | 1992-02-06 | Seiko Instr Inc | Gradation display circuit for display device |
JPH0573005A (en) * | 1991-09-13 | 1993-03-26 | Casio Comput Co Ltd | Picture display device |
JPH09120273A (en) * | 1996-11-01 | 1997-05-06 | Hitachi Ltd | Display circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS567344B2 (en) | 1981-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5453922A (en) | Luminance modulation system of video display unit | |
JPS5335313A (en) | Picture image communication system | |
JPS5432222A (en) | Chromakey tracking unit | |
JPS5367318A (en) | Display system | |
JPS5379421A (en) | Television signal conversion circuit | |
JPS5290225A (en) | Television clock | |
JPS54122026A (en) | Pattern display system | |
KR950010615A (en) | Screen generator for wide TV receiver | |
JPS54124633A (en) | Display circuit of television receiver | |
JPS5320347A (en) | Viewer for pseudo-stereo image | |
KR970072961A (en) | Scanning line inverter | |
JPS5520511A (en) | Display unit for picture | |
JPS54153518A (en) | Corrector for time axis error | |
JPS5477511A (en) | Band compression system for picture signal | |
JPS552928A (en) | Isotherm display system | |
JPS5617583A (en) | Television picture receiver | |
JPS5345926A (en) | Television picture transmission system | |
JPS52141124A (en) | Picture magnification display unit | |
JPS52144918A (en) | Picture enlargement unit | |
SU690654A1 (en) | Television colour synthesizer | |
JPS5389620A (en) | Scanning speed modulator circuit | |
JPS5349913A (en) | Pseudo interlacing system | |
JPS52139316A (en) | Picture image display unit | |
JPS5471929A (en) | Video signal level display method | |
JPS55125774A (en) | Coordinate conversion unit for television signal |