Title:
IMAGE DISPLAY DEVICE AND ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2013/140642
Kind Code:
A1
Abstract:
Provided is a technology for effectively synchronizing a modulator with the rotation of a color wheel in a field-sequential projection-type video display device in which a color wheel is employed. In a projector (10), a controller (24) has a correction unit (32) and a light intensity acquisition unit (34) as a configuration for correcting shift in a reference-position-detection mark (27). The light-intensity-acquiring unit (34), connected to a light sensor (28) via a communication interface (29), acquires the results of measurements performed by the light sensor (28). The correction unit (32) carries out synchronous correction by computing the degree of shift in the reference-position-detection mark (27); i.e., the degree of shift in an index signal, on the basis of the results acquired from the light sensor (28).
Inventors:
TSUCHIKAWA SEIJI
Application Number:
PCT/JP2012/073428
Publication Date:
September 26, 2013
Filing Date:
September 13, 2012
Export Citation:
Assignee:
SHARP KK (JP)
TSUCHIKAWA SEIJI
TSUCHIKAWA SEIJI
International Classes:
G09G3/34; G02B26/00; G03B21/14; G09G3/20; H04N9/31; G02F1/133
Foreign References:
| JP2012003213A | 2012-01-05 | |||
| JP2005300647A | 2005-10-27 | |||
| JP2005242175A | 2005-09-08 | |||
| JP2005043704A | 2005-02-17 | |||
| JPH09127437A | 1997-05-16 | |||
| JP2006011081A | 2006-01-12 |
Attorney, Agent or Firm:
HORI, Shiroyuki et al. (JP)
Ditch Shiroyuki (JP)
Ditch Shiroyuki (JP)
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