Video camera and photometric method therein, image pick-up appar

Details Video camera and photometric method therein, image pick-up appar Video camera and photometric method therein, image pick-up appar

1993-09-24

1995-05-16

Coles, Sr., Edward L.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348234, 348297, H04N 5232

Patent

active

054165156

ABSTRACT:
In a method of and apparatus for split photometry, a plurality of split photometric areas are established by setting a plurality of horizontal and vertical photometric intervals respectively within intervals in a horizontal scanning direction and a vertical scanning direction of the solid-state electronic image sensing device. An extracted luminance-signal component is integrated over a horizontal integration interval designated by an integration control signal. Integrated values obtained by the integration operation are summed, in every split photometric area, over the corresponding vertical photometric interval, and a photometric value is calculated for every split photometric area based upon the value obtained by summing the integrated values in another embodiment, data for controlling exposure or controlling the focusing of an image pick-up lens can be obtained for each of a plurality of blocks set in a photographic area. From data representing the image of a subject, a luminance signal is generated and converted into digital luminance data which is applied to a gate array. The luminance data is summed block by block in the gate array and the summed data is outputted in block units. Only the necessary data is selected from the summed luminance data of every block and a photometric value is calculated. A diaphragm and an electronic shutter is controlled based upon the photometric value calculated. A high-frequency component signal for focusing control can be calculated for each and every block in a similar manner.

REFERENCES:
patent: 4614974 (1986-09-01), Toyama
patent: 5049983 (1991-09-01), Matsumoto et al.
patent: 5077613 (1991-12-01), Hirao et al.
patent: 5185658 (1993-02-01), Shinomiya
patent: 5200828 (1993-04-01), Jang et al.
patent: 5282075 (1994-01-01), Sugimori

Affiliated with

Also associated with

Rating

Video camera and photometric method therein, image pick-up appar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video camera and photometric method therein, image pick-up appar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video camera and photometric method therein, image pick-up appar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-641125