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:
Sep. 24, 1985
Filed:
Aug. 11, 1982
Applicant:
Inventors:
Makoto Tomoyori, Iwate, JP;
Masashi Fuse, Iwate, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
340995 ; 340988 ; 358103 ; 364460 ;
Abstract
A course guidance apparatus for vehicles has a direction sensor and a speed sensor carried on the vehicle and a traveling locus corresponding to detection signals from the direction sensor and the speed sensor is plotted in a manner to be superposed on a map film and displayed on a projection screen. The traveling locus is traced by a laser beam on a trace plate having electrooptic, optomagnetic, or incoherent-to-coherent light conversion properties. The superposed picture is clearly viewed, and the misregistration between the map and the traveling locus is avoided.