Invention Grant
- Patent Title: Device for generating a video image sharpness improvement signal
- Patent Title (中): 用于产生视频图像锐度改善信号的装置
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Application No.: US10926786Application Date: 2004-08-26
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Publication No.: US07286183B2Publication Date: 2007-10-23
- Inventor: Eric Cirot , Michel Barou , Danika Chaussy
- Applicant: Eric Cirot , Michel Barou , Danika Chaussy
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics S.A.
- Current Assignee: STMicroelectronics S.A.
- Current Assignee Address: FR Montrouge
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; David V. Carlson
- Priority: FR0310326 20030829
- Main IPC: H04N5/00
- IPC: H04N5/00 ; H04N5/14 ; H04N5/68 ; G09G5/00 ; G09G5/02
Abstract:
A device for producing a video image sharpness improvement signal (DOC21-DOC22), with black level clipping of an associated video signal, comprises a differential transconductance stage processing the video signal and whose bias currents (Imax) are directly proportional to the active component (ΔV) of the video signal so as to bring about a black level sharpness improvement signal clipping.
Public/Granted literature
- US20050078054A1 Device for generating a video image sharpness improvement signal Public/Granted day:2005-04-14
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