The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 1990
Filed:
May. 18, 1989
Toshiyuki Kimura, Kawagoe, JP;
Youichi Yamazaki, Kawagoe, JP;
Yoshiya Nonaka, Kawagoe, JP;
Yasunao Go, Kawagoe, JP;
Fumio Endo, Kawagoe, JP;
Hiroyuki Komata, Kawagoe, JP;
Mitsuo Syoji, Kawagoe, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
An electronic unit operable in conjunction with a body unit and used by mounting it on an automotive vehicle. The electronic unit includes first and second connectors which produces a coupled-status signal when the electronic unit is coupled to the body unit and a decoupled-status signal when the electronic unit is decoupled from the body unit. A microcomputer is coupled to the first connector and is selectively placed to a start mode when the coupled-status signal is received from the first connector and to a stop mode when the decoupled-status signal is received therefrom. The microcomputer produces clock pulses when it is in the start mode and a stop signal when it is in the stop mode. A timer is coupled to the microcomputer and outputs a reset signal to the microcomputer when the clock pulses are not received for more than a predetermined period of time. The timer further inhibits the reset signal from being outputted when the stop signal is received. In the electronic unit thus arranged, resetting of the microcomputer is ensured should the same be in a runaway condition.