Tone conversion apparatus, image display apparatus using the...

Details Tone conversion apparatus, image display apparatus using the... Tone conversion apparatus, image display apparatus using the...

2011-03-22

2011-03-22

Tran, Trang U (Department: 2422)

Television

Image signal processing circuitry specific to television

Hue control

C348S254000, C348S674000

Reexamination Certificate

active

07911540

ABSTRACT:
In a tone conversion apparatus, a decision-processing section sequentially detects a signal level difference between pixels of an image in a predetermined direction thereof by using the image signal having a first number of bits, determines whether the signal level difference remains within a preset signal level difference, and determines a pixel which has the same signal level as that of an immediately preceding pixel that encounters the signal level difference and is consecutive with the immediately preceding pixel. A bit-allocation-processing section may also be utilized.

REFERENCES:
patent: 5310962 (1994-05-01), Kimpara et al.
patent: 7312777 (2007-12-01), Miyata et al.
patent: 7379096 (2008-05-01), Takemoto
patent: 7663678 (2010-02-01), Miyasaka
patent: 05242244 (1993-09-01), None
patent: 2004-133260 (2004-04-01), None
patent: 2005-221593 (2005-08-01), None
Office Action from Japanese Applicatin No. 2005-352586, dated Nov. 30, 2010.

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