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. 17, 1990
Filed:
Dec. 04, 1989
Applicant:
Inventor:
Takuji Harada, Kanagawa, JP;
Assignee:
Harada Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
3072723 ; 3072964 ; 343901 ; 343903 ; 343715 ; 371 12 ;
Abstract
An automobile antenna control device generating a reset pulse which starts the operation of a microcomputer. The pulse is generated when an automobile radio power source is switched from 'off' to 'on,' or when the power source is switched from 'on' to 'off,' so that a so-called runaway of the microcomputer can be prevented. The power source is connected to an input port of the microcomputer; the antenna is extended when the power source is 'on,' and is retracted when the power source is 'off.' The extending or retracting action of the antenna is stopped when the starter power source of the master key switch of the automobile is 'on.'