Automatic focus adjusting device

Details Automatic focus adjusting device Automatic focus adjusting device

1997-07-17

1998-11-24

Perkey, W. B.

Photography

With exposure objective focusing means, focusing aid, or...

With electronic filtering

396102, 396135, 348354, G03B 1336

Patent

active

058420592

ABSTRACT:
An automatic focus adjusting device for automatically adjusting focus by using a predetermined signal component of a picked-up image signal outputted from an image sensor is arranged to find the state of an object from information on the distribution of frequencies within a DCT block and to control a focus adjusting action according to the state of the object found, so that focus adjustment can be stably performed without any erroneous operation.

REFERENCES:
patent: 5210564 (1993-05-01), Takemoto
patent: 5341170 (1994-08-01), Takemoto

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