Television – Image signal processing circuitry specific to television – Gray scale transformation
Patent
1996-02-27
1998-11-24
Burgess, Glenton B.
Television
Image signal processing circuitry specific to television
Gray scale transformation
348687, 348565, H04N 545, H04N 557
Patent
active
058414860
ABSTRACT:
Average picture levels of a first video signal (for example, a parent picture signal) and a second video signal (for example, a child picture signal) are detected at first and second APL detection circuits, respectively. A compensation voltage sharing circuit inputs a compensation voltage, for example an ABL/ACL compensation voltage, and shares the compensation voltage according to a ratio of the APL values detected at the first and the second APL detection circuits. The shared compensation voltages are added to the first and the second video signals at the first and the second video processing circuits, respectively. The processed video signals are synthesized at a synthesizing circuit and the synthesized video signal is displayed on a screen of a display device as a multipicture, in which the first and the second pictures are independently and properly compensated by the ABL/ACL function. Thus, a good quality multipicture can be seen.
REFERENCES:
patent: 3947631 (1976-03-01), Rhee
patent: 4044375 (1997-08-01), Norman
patent: 4947253 (1990-08-01), Neal
patent: 5003394 (1991-03-01), Lagoni
patent: 5202765 (1993-04-01), Lineberry
patent: 5204748 (1993-04-01), Lagoni
patent: 5359369 (1994-10-01), Izawa et al.
patent: 5396300 (1996-03-01), Kageyama
patent: 5432566 (1995-07-01), Tanaka et al.
patent: 5548341 (1996-08-01), Klink et al.
patent: 5555026 (1996-09-01), Lee
patent: 5596374 (1997-01-01), Sumiyoshi et al.
patent: 5675391 (1997-10-01), Yamaguchi et al.
patent: 5699127 (1997-12-01), Ando et al.
Ando Hiroshi
Kageyama Atsuhisa
Burgess Glenton B.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Compensation voltage generating apparatus for multipicture displ does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compensation voltage generating apparatus for multipicture displ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compensation voltage generating apparatus for multipicture displ will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1708869