Document Type and Number:
Japanese Patent JPS6130943
Kind Code:
B2
Abstract:
PURPOSE:To lighten the burden of a chauffeur by performing switching between the image signal of an entraining port camera and the signal for charge indication according to the open-closed state of the front and the back doors and receiving televisional pictures and obtaining a whole automatic switching system. CONSTITUTION:When the signal from a charge indicating signal generator 7 is received, the charge displaying signal is transmitted to an image amplifying circuit 18, passing through the contact C of a selection switch 24, and the charge indicating signal is received. At this time, the heater of the entraining port camera 5 is in preheated state. When the contact of the selector switch 24 is turned to camera- receiving state, a rated voltage is applied to an image pick-up tube 32, and at the contact C, switching is performed so that the image signal of the entraining port camera 5 is received. The selector switch 24 is operated according to the open-closed state of the front and the back doors.
Inventors:
MASUMOTO KIICHI
YOSHIKAWA YOICHI
YOSHIKAWA YOICHI
Application Number:
JP8856578A
Publication Date:
July 17, 1986
Filing Date:
July 19, 1978
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B60R16/02; B60R1/00; B60R11/02; H04N7/18