Source: https://patents.google.com/patent/US8134646?oq=6%2C563%2C928
Timestamp: 2018-03-23 00:26:04
Document Index: 798321018

Matched Legal Cases: ['Application No. 2006', 'Application No. 2006', 'art 24', 'art 32', 'art 32', 'art 33', 'art 25']

US8134646B2 - Video signal processing device and video signal processing method - Google Patents
Video signal processing device and video signal processing method Download PDF
US8134646B2
US8134646B2 US11802678 US80267807A US8134646B2 US 8134646 B2 US8134646 B2 US 8134646B2 US 11802678 US11802678 US 11802678 US 80267807 A US80267807 A US 80267807A US 8134646 B2 US8134646 B2 US 8134646B2
US11802678
US20080018795A1 (en )
According to one embodiment, a video signal processing device includes an input unit to which a brightness signal is input, a high band emphasis unit that extracts a first high band component from the brightness signal and outputs an output signal by adding the first high band component to the brightness signal, an acquisition unit that acquires a first histogram data of brightness levels for one frame of the input brightness signal, and a first processing unit that performs a high band emphasis processing on the input brightness signal based on the first histogram data.
This application is based upon and claims a priority from Japanese Patent Application No. 2006-144129 filed on May 24, 2006 and from Japanese Patent Application No. 2006-150568 filed on May 30, 2006, the entire contents of which are incorporated herein by reference.
Various embodiments of the invention will be described. In general, according to one embodiment of the present invention, there is provided a video signal processing device includes an input unit to which a brightness signal is input, a high band emphasis unit that extracts a first high band component from the brightness signal and outputs an output signal by adding the first high band component to the brightness signal, an acquisition unit that acquires a first histogram data of brightness levels for one frame of the input brightness signal, and a first processing unit that performs a high band emphasis processing on the input brightness signal based on the first histogram data.
FIG. 2 shows an example of the video signal processing part 24. The digital brightness signal Y and the digital chrominance signal Cb/Cr are supplied to an IP (interlace progressive) conversion/scaling processing part 32 via input terminals 31 a, 31 b.
The IP conversion/scaling processing part 32 performs progressive conversion and scaling processing on the brightness signal Y and the chrominance signal Cb/Cr input thereto and outputs the resulting signals to an enhancer processing part 33 for display on the video display part 25 (flat-panel display such as a liquid crystal display or a plasma display).
Dhds3(i)=Dhds2(i)×Sg(i)
Dhds5(i)=Dhds4(i)×HDG(i)
a coring unit that deletes a fine signal component included in the high band component extracted by the first calculation unit.
US11802678 2006-05-24 2007-05-24 Video signal processing device and video signal processing method Expired - Fee Related US8134646B2 (en)
JP2006144129A JP4791884B2 (en) 2006-05-24 2006-05-24 A video signal processing apparatus and a video signal processing method
JPP2006-144129 2006-05-24
JP2006150568A JP4791887B2 (en) 2006-05-30 2006-05-30 A video signal processing apparatus and a video signal processing method
JPP2006-150568 2006-05-30
US20080018795A1 true US20080018795A1 (en) 2008-01-24
US8134646B2 true US8134646B2 (en) 2012-03-13
ID=38971087
US11802678 Expired - Fee Related US8134646B2 (en) 2006-05-24 2007-05-24 Video signal processing device and video signal processing method
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US7808473B2 (en) * 2005-07-27 2010-10-05 Kabushiki Kaisha Toshiba Display apparatus and method of controlling the backlight provided in the display apparatus
Japanese Office Action dated Feb. 15, 2011 for JP-2006-144129.
Japanese Office Action dated Feb. 15, 2011 for JP-2006-150568.
US20080018795A1 (en) 2008-01-24 application
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MIYAZAWA, HIROTOSHI;REEL/FRAME:019926/0210