Title:
HIGH-SPEED CONVERGING METHOD OF OPTIMAL EXPOSING INDEX
Document Type and Number:
Japanese Patent JP3930819
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a high-speed converging method of an optimal exposing index in a digital photographic apparatus.
SOLUTION: Images obtained by an optical sensor of a digital camera are converged with high speed into the optimal exposing index by a closed loop operation by creating a reference table of the easily changeable exposing index according to a camera characteristic. Accordingly, exposure control of multiple variables (exposing time, gain value and numeric value F) can be easily attained to realize high-speed convergence of the optimal automatic exposing index.
More Like This:
| JPS5480125 | EXPOSURE CONTROL CIRCUIT |
| JPS54150126 | DIAPHRAGM SHUTTER FOR PHOTOGRAPHIC CAMERA |
Inventors:
Cai Shika
Liu Mankichi
Liu Mankichi
Application Number:
JP2003051233A
Publication Date:
June 13, 2007
Filing Date:
February 27, 2003
Export Citation:
Assignee:
Unicom Technology Co., Ltd.
International Classes:
G03B7/097; H04N5/232; (IPC1-7): G03B7/097; H04N5/232
Domestic Patent References:
| JP2000358189A | ||||
| JP2268080A |
Attorney, Agent or Firm:
Shogo Ehara
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano