Method for determining photographic environment and imaging...

Details Method for determining photographic environment and imaging... Method for determining photographic environment and imaging...

2004-09-07

2009-12-29

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07639284

ABSTRACT:
An NTSC imaging apparatus, in which the shutter speed is set to a first value other than N/120 second, and a flicker detecting process is performed on a video signal obtained at the first shutter speed to extract a particular frequency component. When the level of this frequency component is higher than a threshold value, photographing is conducted under fluorescent light with a power supply frequency of 50 Hz. When the level is not higher than the threshold value, the shutter speed is set to a second value other than N/100 second, and a flicker detecting process is performed on a video signal obtained at the second shutter speed to extract a particular frequency component. When the level of this frequency component is higher than a threshold value, photographing is conducted under fluorescent light with a power supply frequency of 60 Hz.

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