Television – Monitoring – testing – or measuring – Test signal generator
Patent
1996-05-09
1998-08-18
Tung, Bryan
Television
Monitoring, testing, or measuring
Test signal generator
348189, 348512, 348547, H04N 1700
Patent
active
057964254
ABSTRACT:
An imaging system that images a raster-scanned display receives the vertical synchronizing signal of the raster-scanned display, and has a synchronizing signal generator for generating the vertical synchronizing signal of the imaging system. According to a first aspect of the invention, the output of the imaging system is multiplied by a compensation signal that compensates for brightness differences due to a difference in frequency between the two vertical synchronizing signals. According to a second aspect of the invention, the vertical synchronizing signal of the imaging system is delayed from the vertical synchronizing signal of the raster-scanned display by an amount calculated so that no such brightness difference occurs in the part of the raster-scanned display viewed by the imaging system.
REFERENCES:
patent: 5233419 (1993-08-01), Lee
patent: 5440340 (1995-08-01), Tsurutani et al.
patent: 5473394 (1995-12-01), Hideyuki
patent: 5677732 (1997-10-01), Moon
Record of the 1995 Kansai-Section Joint Convention of Institutes of Electrical Engineering, Japan, pp. 19 and G415 (Nov. 1995).
Hitotsumatsu Akira
Minami Kouji
Mitsubishi Denki & Kabushiki Kaisha
Tung Bryan
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