Title:
METHOD, CIRCUIT AND PROGRAM FOR CONTOUR COMPENSATION AND VIDEO SIGNAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3969644
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a contour compensating method, contour compensation circuit and contour compensation program capable of suppressing coloring and compensating a contour even in a four-plate pixel shifting system and to provide a video signal display device.
SOLUTION: This contour compensation circuit 1 individually compensates a video signal level of a contour for each color with a first reference channel and a second reference channel of a video signal for displaying video in order to prevent coloring that occurs near the contour in enhancing the contour of a contour enhancement target in the video with the four-plate pixel shifting system. The contour compensation circuit 1 is provided with an inverse gamma correcting part 3, a contour compensation signal generating part 5, an adjustment signal generating part 7, a contour compensation signal delaying part 9 and an inverse gamma correction signal delaying part 11 and a calculating part 13.
More Like This:
Inventors:
Takayuki Yamashita
Masayuki Sugawara
Fumio Okano
Masayuki Sugawara
Fumio Okano
Application Number:
JP2002247628A
Publication Date:
September 05, 2007
Filing Date:
August 27, 2002
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
H04N9/68; H04N5/208; (IPC1-7): H04N9/68
Domestic Patent References:
| JP2000083180A | ||||
| JP3093363A | ||||
| JP9294220A | ||||
| JP6046444A | ||||
| JP8186739A | ||||
| JP10322573A | ||||
| JP6178156A | ||||
| JP2002232743A | ||||
| JP5176201A |
Attorney, Agent or Firm:
Isono Dozo