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Patent Searching and Data


Title:
VIDEO CAMERA
Document Type and Number:
Japanese Patent JPS6331387
Kind Code:
A
Abstract:
PURPOSE:To effectively avoid the occurrence of underachromatized or over- achromatized horizontal scanning lines by generating a control signal for achromatizing operation based on the chrominance signal components of an image pickup signal. CONSTITUTION:The chrominance signal components C1X and C2X outputted from 1H delay lines 14 and 15 are given to the maximum value selecting circuit 26 of an achromatizing circuit 25, and a higher color signal level is delected, and a slicing circuit 27 slices a maximum value selecting signal MAX with a prescribed slice level to generate a control signal CON for achromatization, and this signal is given to a gain control circuit 22. The circuit 22 varies the gain to a coming carrier chrominance signal CAR to perform the achromatizing operation. Consequently, the carrier chrominance signal CAR and the control signal CON are synchronized with each other to effectively avoid the occurrence of over-achromatization or underachromatization.

Inventors:
ONGA MAKOTO
KONDOU NORIAKI
Application Number:
JP17490586A
Publication Date:
February 10, 1988
Filing Date:
July 25, 1986
Export Citation:
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Assignee:
SONY CORP
International Classes:
H04N9/07; (IPC1-7): H04N9/07
Domestic Patent References:
JPS5919492A