Title:
バックライト装置及びその制御方法、画像表示装置
Document Type and Number:
Japanese Patent JP5208261
Kind Code:
B2
Abstract:
A backlight apparatus comprises a light emission control unit which controls light emission of each of a plurality of light source blocks; a luminance detecting unit which detects a luminance of the light source block; and a correcting unit which successively executes a correcting process for the plurality of light source blocks by allowing one light source block to emit light so that a light emission amount of the concerning light source block is corrected on the basis of a detected luminance value and a target value thereof; wherein a temperature fluctuation suppressing process is executed when the correcting unit executes the correcting process, so that a plurality of the light source blocks, which include the light source block assumed to emit light in the correcting process to be executed next time, are simultaneously allowed to emit light for a predetermined period at a predetermined luminance.
Inventors:
Masanao Kurita
Application Number:
JP2011272655A
Publication Date:
June 12, 2013
Filing Date:
December 13, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
H05B37/02; F21S2/00; F21V23/00; G02F1/133; F21Y101/02
Domestic Patent References:
| JP2004193029A | ||||
| JP2006031977A |
Foreign References:
| WO2008029548A1 | ||||
| WO2008133258A1 |
Attorney, Agent or Firm:
Kazunobu Sera
Yoshiyuki Kawaguchi
Mayuko Wakuda
Koichiro Sakai
Takeshi Nakamura
Takeshi Niwa
Yoshiyuki Kawaguchi
Mayuko Wakuda
Koichiro Sakai
Takeshi Nakamura
Takeshi Niwa