Display apparatus with gamma measurement

Details Display apparatus with gamma measurement Display apparatus with gamma measurement

1996-04-12

1998-08-25

Britton, Howard

Television

Monitoring, testing, or measuring

Testing of image reproducer

H04N 1702

Patent

active

057987904

ABSTRACT:
Display apparatus comprises a display screen and drive means for generating an image on the display screen in response to a video signal input from an external video source. The drive means comprises gamma measurement means having a test signal generator for generating a test signal to produce a test image on the display screen, and output detection means for generating a sense signal as a function of the test image produced on the display screen.

REFERENCES:
patent: 3496295 (1970-02-01), Pohle
patent: 4276573 (1981-06-01), Heitmann
patent: 4816897 (1989-03-01), Konishi
patent: 5448288 (1995-09-01), Oue
patent: 5526058 (1996-06-01), Sano et al.
patent: 5561459 (1996-10-01), Stokes
O'Malley, F.L., "Video Logarithmic Amplifier", IBM Technical Disclosure Bulletin, vol. 13, No. 9, Feb. 1971, p. 2610.

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