Title:
SIGNAL TRANSMISSION DEVICE BETWEEN DOOR AND CAR BODY IN CAR
Document Type and Number:
Japanese Patent JPS61191420
Kind Code:
A
Abstract:
PURPOSE:To allow the construction of the electrical circuits of door and car body sides with a few wires, reduce cost, and improve the reliability of signal transmission by using a noncontact type transmitter-receiver that transmits signals between both circuits. CONSTITUTION:When a locked door 5 is opened, a cipher number is input by operating a signal input device, that is, a keyboard 24 provided on the outer panel of the door 5. In addition, the signals corresponding to this cipher number are issued from the projector 23a at the door 5 side through a transmitting unit 23 by being converted into infrared rays and these infrared rays are received by the light receiving device 21a at the car body 5 side. The infrared rays received by the light receiving device 21a are converted into electrical signals by a receiving unit 21 and are sent to a decision circuit 16. Then, when the said signals match the ciphers prestored in a memory circuit 15, the signals are output to an actuator operation control circuit 17 from the decision circuit 16. As a result, a door lock device 8 can be unlocked by an actuator 10.
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Inventors:
MATSUMOTO MASAHARU
Application Number:
JP3056885A
Publication Date:
August 26, 1986
Filing Date:
February 20, 1985
Export Citation:
Assignee:
OHI SEISAKUSHO CO LTD
International Classes:
E05B49/00; B60J5/00; B60J5/04; E05B81/56; E05B83/36; G07C9/00; H02G3/00; (IPC1-7): B60J5/00; E05B49/00; H02G3/00
Domestic Patent References:
| JPS54103199A | 1979-08-14 | |||
| JPS5945237A | 1984-03-14 |
Attorney, Agent or Firm:
Soichi Takezawa