Level difference correcting method and image pick-up device...

Details Level difference correcting method and image pick-up device... Level difference correcting method and image pick-up device...

2007-03-06

2007-03-06

Vu, Ngoc-Yen (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C358S529000, C348S221100, C348S234000

Reexamination Certificate

active

10137638

ABSTRACT:
An OB level difference is calculated from the luminance signal levels of at least two frames which are exposed for proper exposure time and for exposure time different from the proper exposure time, and the OB level difference is corrected in an input step of a signal processing circuit. Calculation of the OB level difference is performed regularly from immediately after power on of the equipment, the OB level difference obtained in each frame is multiplied, and a value obtained by dividing the multiplied OB level difference by the number of sampled frames is designated as a correction value.

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