Title:
PICTURE RECORDER
Document Type and Number:
Japanese Patent JPS62179289
Kind Code:
A
Abstract:
PURPOSE:To record a good black and white picture by providing a discrimination circuit and preventing an input luminance signal from passing through a comb-line filter in the case of the black and white picture. CONSTITUTION:When the luminance signal of the black and white picture is inputted to an input terminal A, the discrimination circuit 10 detects the absence of a color burst signal, discriminates that it is the black and white picture and controls the first switch circuit 8 and the second switch circuit 13. At this time, the second switch circuit 13 selects the luminance signal inputted to the input terminal A of the device and supplies to the input of the first FM modulator 4 to perform the FM modulation. This FM modulation signal is further inputted to the second addition circuit 9, however, the first switch 8 controlled by the discrimination circuit 10 operates so as to prevent the output signal of the second FM modulator 7 from being supplied to the second addition circuit 9.
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Inventors:
NISHI SEIKI
Application Number:
JP2155586A
Publication Date:
August 06, 1987
Filing Date:
February 03, 1986
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H04N9/793; G11B20/06; H04N9/79; H04N9/86; (IPC1-7): G11B20/06; H04N9/79; H04N9/86
Attorney, Agent or Firm:
Masuo Oiwa
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