Title:
DISPLAY
Document Type and Number:
WIPO Patent Application WO/2007/043214
Kind Code:
A1
Abstract:
A display comprises a reference voltage generating circuit for generating reference
voltages used for converting the digital gray-scale level value of an input image
into an analog voltage and an FRC section for displaying a gray-scale image corresponding
to the gray-scale of the image by interpolating a gray-scale level which cannot
be displayed by any reference voltage by an FRC method when the number of reference
voltages generated is smaller than the maximum gray-scale level of the input
image. The intervals between the reference voltages generated are small for
the intermediate gray-scale level much influenced by the brightness difference
and the visibility and are large for the low gray-scale level not much influenced
by the brightness difference and the visibility compared to the intermediate
gray-scale level. With this, when gray-scale display is carried out by using
frame rate control (FRC), image degradation such as flickering or noise at the
gray-scale level at which the visibility is high and at the gray-scale level at
which the difference in brightness between the gradations is large can be prevented.
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Inventors:
KAWASHIMA YUKI
NISHIKUBO KEISHI
TAKAHASHI KOZO
YANAGI TOSHIHIRO
NISHIKUBO KEISHI
TAKAHASHI KOZO
YANAGI TOSHIHIRO
Application Number:
PCT/JP2006/311497
Publication Date:
April 19, 2007
Filing Date:
June 08, 2006
Export Citation:
Assignee:
SHARP KK (JP)
KAWASHIMA YUKI
NISHIKUBO KEISHI
TAKAHASHI KOZO
YANAGI TOSHIHIRO
KAWASHIMA YUKI
NISHIKUBO KEISHI
TAKAHASHI KOZO
YANAGI TOSHIHIRO
International Classes:
G09G3/36; G02F1/133; G09G3/20
Foreign References:
| JPH0844319A | 1996-02-16 | |||
| JP2005242359A | 2005-09-08 | |||
| JPH06202083A | 1994-07-22 | |||
| JPH0572991A | 1993-03-26 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (2-6 Tenjinbashi 2-chome, Kita, Kita-ku, Osaka-sh, Osaka 41, JP)
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