Automatic focusing camera with automatic focusing function for a

Details Automatic focusing camera with automatic focusing function for a Automatic focusing camera with automatic focusing function for a

1990-09-25

1991-12-24

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358228, 354404, H04N 5232

Patent

active

050757776

ABSTRACT:
In an electric still camera with an automatic focusing function, when a user operates a releasing switch (21), a focusing operation relative to an object is initiated. During this focusing operation, a CCD (45) is driven by a timing generator (27) in accordance with a first driving method. According to this first driving method, signal charges are read out five times for one field and therefore five focus evaluating values are obtained for one field. These focus evaluating values enable the high speed driving of a focusing motor (3) at the time of focusing operation. After the focusing operation is completed, the CCD (45) is driven by the timing generator (27) in accordance with a second driving method which is a normal driving method, a regular video signal is output from an image sensing circuit 4 and recorded in a video floppy 26.

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