Method and apparatus for controlling an electronic zoom system u

Details Method and apparatus for controlling an electronic zoom system u Method and apparatus for controlling an electronic zoom system u

1994-04-29

1995-12-12

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348581, H04N 5262

Patent

active

054754267

ABSTRACT:
An electronic zoom system comprises a memory, a zoom operation processing circuit having a read/write control circuit for controlling the reading and writing of signals to and from said memory, respectively, and an operation control circuit for controlling said zoom operation processing circuit based upon a result of successive additions of .beta.-.alpha., whereby a video signal is input to said zoom operation processing circuit for electronically magnifying and expanding said video signal by a magnification factor of .beta./.alpha.. The electronic zoom system can reduce the power consumption of the control circuit and enhance the utilization efficiency of control data used for the control circuit.

REFERENCES:
patent: 4163249 (1979-07-01), Michael
patent: 4682243 (1987-07-01), Hatayama
patent: 4792856 (1988-12-01), Shiratsuchi
patent: 4876601 (1989-10-01), Hashimoto
patent: 4951125 (1990-08-01), Kojima
patent: 5243433 (1993-09-01), Hailey
patent: 5253064 (1993-10-01), Yamamoto et al.
Kinugasa, et al., "An Electronic Zoom Video Camera Using Image Scanner Control" pp. 501-505, 1991 IEEE, Yokohama, Japan.

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