Title:
【発明の名称】カメラ信号処理回路
Document Type and Number:
Japanese Patent JP2830188
Kind Code:
B2
Abstract:
PURPOSE:To realize the adaptive function of a frequency characteristic of a horizontal aperture control luminance signal and a gain loss correction function for a 1H delay circuit with simple constitution by obtaining a difference signal and an average signal between a current scanning line luminance signal and a 1H-preceding scanning line luminance signal. CONSTITUTION:When no error exists between a current scanning line luminance signal YH(k+1) and a one-preceding horizontal period scanning line luminance signal YHk by applying gain adjustment at a gain adjustment circuit 8, a gain loss caused in the one-preceding horizontal period scanning line luminance signal YHk is corrected by a one-preceding horizontal period delay circuit 7. when no error state is attained simultaneously, a horizontal aperture control signal S16 is controlled to a proper state representing a frequency characteristic not giving adverse effect to a modulation chroma signal mutually automatically. Thus the frequency characteristic of the aperture control signal S16 as well as the gain loss correction processing is adjusted.
Inventors:
ONGA MAKOTO
SASE MASATOSHI
SASE MASATOSHI
Application Number:
JP27077489A
Publication Date:
December 02, 1998
Filing Date:
October 18, 1989
Export Citation:
Assignee:
SONII KK
International Classes:
H04N5/208; H04N5/217; H04N9/07; (IPC1-7): H04N9/07
Attorney, Agent or Firm:
Kei Tanabe