Focus detecting apparatus

Details Focus detecting apparatus Focus detecting apparatus

2006-09-05

2006-09-05

Ho, Tuan (Department: 2622)

Television

Camera, system and detail

Optics

C348S297000, C348S345000, C348S348000, C348S349000, C348S356000, C396S121000, C396S123000

Reexamination Certificate

active

07102681

ABSTRACT:
In a focus detection apparatus, an accumulation-type sensor formed of a plurality of sensor cells accumulates an image signal, and a component of the image signal is read from each cell for a focus detection calculation. A signal is read from a part of the cells in the sensor, and it is determined from the signal whether an image signal has a low contrast. When it is determined that the image signal has a low contrast, reading signals from the other cells is disabled to omit unnecessary signal reading operations.

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