Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FLASH CONTROL METHOD OF DIGITAL CAMERA
Document Type and Number:
Japanese Patent JP2011242739
Kind Code:
A
Abstract:

To provide a flash control method of a digital camera capable of uniformly exposing under different setting by a user.

Index values corresponding to each of sensitivity values are determined first and then emission intensities corresponding to these sensitivity values are obtained, and each target luminance to be achieved after exposure is uniformly determined; thereby an energy table is created. A pre-emission is made at predetermined intensity for respective distances to obtain luminance values of corresponding pre-emission. Further, with respect to each distance, index values of corresponding main emission is obtained for maximum emission intensity based on the energy table. By setting uniform target luminance achieved after exposure, a pre-emission table is created. When imaging, corresponding main emission intensity is obtained based on the pre-emission luminance value and the pre-emission table.


Inventors:
LIN YUHONG
WU CHENG CHANG
Application Number:
JP2010159369A
Publication Date:
December 01, 2011
Filing Date:
July 14, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ABILITY ENTE RPRISE CO LTD
International Classes:
G03B15/05; G03B7/16; G03B15/03; H04N5/225; H04N5/238
Domestic Patent References:
JPH08278540A1996-10-22
JP2005204120A2005-07-28
JP2010045773A2010-02-25
Foreign References:
US20050157206A12005-07-21
Attorney, Agent or Firm:
Sakuo Yamaguchi