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Title:
IMAGE DISPLAY DEVICE AND DRIVE METHOD FOR IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/098902
Kind Code:
A1
Abstract:
Conversion from an image signal to a subfield code in an image display device is computed without using a conversion table. To this end, the image display device has a subfield code conversion circuit (37), a subfield code array circuit (38), and a dither element output circuit (39). The subfield code conversion circuit (37) dither processes an image signal and converts the image signal into a subfield code. The subfield code array circuit (38) selects either a sequential write operation or a skip write operation on the basis of a comparison between sequential write power and skip write power, and rearranges the subfield code in an order corresponding to the selected write operation. The dither element output circuit (39) calculates a dither value by multiplying a dither element by a prescribed amplitude factor, in a manner such that the amplitude of the dither element in the case that the skip write power is greater than the sequential write power, is smaller than the amplitude of the dither element in the case that the skip write power is less than the sequential write power.

Inventors:
HONDA HIROFUMI
Application Number:
PCT/JP2012/000335
Publication Date:
July 26, 2012
Filing Date:
January 20, 2012
Export Citation:
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Assignee:
PANASONIC CORP (JP)
HONDA HIROFUMI
International Classes:
G09G3/20; G09G3/294
Domestic Patent References:
WO2009096186A12009-08-06
Foreign References:
JP2009168952A2009-07-30
JPH07200810A1995-08-04
JP2002258793A2002-09-11
JP2006071774A2006-03-16
JP2006079063A2006-03-23
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
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