Title:
COLOR IMAGE PICKUP DEVICE
Document Type and Number:
Japanese Patent JPS6481588
Kind Code:
A
Abstract:
PURPOSE:To offer a device without any characteristic fluctuation with low cost by using a single frequency discriminator having the same frequency discrimination characteristic so as to apply frequency discrimination to two signals being objects of comparison. CONSTITUTION:The frequency information in an electron beam scanning obtained from an index signal and the frequency information of the information signal obtained by reading the information signal stored in a storage device MA are fed alternately to a single frequency discriminator FMdet by a switch S1 sequentially to apply frequency demodulation to two signals in time division. Moreover, signals holding individually two signals being the result of individual frequency demodulation of said two signals are compared and the result is given to a deflection control circuit DEFC as an error signal.
Inventors:
TAKANASHI RYOYU
NAKAGAKI SHINTARO
ICHIMURA HIROSHI
NEGISHI ICHIRO
OSADA MASARU
KATASE WATARU
NAKAGAKI SHINTARO
ICHIMURA HIROSHI
NEGISHI ICHIRO
OSADA MASARU
KATASE WATARU
Application Number:
JP23923887A
Publication Date:
March 27, 1989
Filing Date:
September 24, 1987
Export Citation:
Assignee:
VICTOR COMPANY OF JAPAN
International Classes:
H04N9/04; (IPC1-7): H04N9/04
Attorney, Agent or Firm:
Takama Imama