Title:
ANTITHEFT DEVICE
Document Type and Number:
Japanese Patent JPS62218252
Kind Code:
A
Abstract:
PURPOSE:To aim at the theft prevention of a car-mounting acoustic device and a vehicle itself, by utilizing the car-mounting acoustic device provided with a safety function, and information a driver a fact that a thief has invaded the inside of a car in a way of sounding a door horn by a door horn drive circuit. CONSTITUTION:A microprocessor 2 is built in a car-mounting acoustic device, for example, a car radio 1. And, this microprocessor 2 constitutes a central processing unit 3, a read-only memory 4 and a random access memory 5 with a single IC chip, while there are provided with input-output terminals to be connected to a nonvolatile-random access memory 6 storing the memory code known by only a car driver and an external device. On the other hand, another microprocessor 20 is set up in a single printed board 18 constituting a door horn drive circuit 19. And, in this microprocessor 20, there is provided with an input terminal 21 or the like to be connected to a control terminal 16 of the said microprocessor 2.
Inventors:
TAKAHASHI MASARU
OZAKI YOSHIAKI
OZAKI YOSHIAKI
Application Number:
JP6253486A
Publication Date:
September 25, 1987
Filing Date:
March 20, 1986
Export Citation:
Assignee:
SANYO ELECTRIC CO
TOKYO SANYO ELECTRIC CO
TOKYO SANYO ELECTRIC CO
International Classes:
B60R25/20; B60R25/01; B60R25/10; B60R25/23; B60R25/34; G08B15/00; (IPC1-7): B60R25/10; G08B15/00
Attorney, Agent or Firm:
Takuji Nishino