Title:
COLOR TELEVISION CAMERA
Document Type and Number:
Japanese Patent JPH02285892
Kind Code:
A
Abstract:
PURPOSE:To always apply satisfactory contour exaggeration without generating folding distortion by comprising the 1H delay of a camera of a glass delay line, providing a delay circuit whose delay time is changed corresponding to a temperature at the front or rear stage of the glass delay line, and compensating the fluctuation of the delay time due to the temperature on the glass delay line. CONSTITUTION:A signal obtained at the output side of the glass delay line 50 is connected to the base of an npn-transistor 53 comprising an active delay circuit 51. The collector of the transistor 53 is connected to the base of an npn-transistor 58 via a capacitor 57 which decides the delay time, and also, the emitter of the transistor 53 is connected to the base of the transistor 58 via a thermistor 50 whose resistance value is changed by the temperature to decide the delay time. At such a case, the delay time decided by the glass delay line 50, the capacitor 57, and the thermistor 59 is set at 1H. Also, in this case, the resistance value of the thermistor 59 is changed according to the change of the temperature.
Inventors:
MASUDA YUKIHIRO
Application Number:
JP10875689A
Publication Date:
November 26, 1990
Filing Date:
April 27, 1989
Export Citation:
Assignee:
SONY CORP
International Classes:
H04N9/09; H04N9/68; (IPC1-7): H04N9/09; H04N9/68
Attorney, Agent or Firm:
Hidekuma Matsukuma
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