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:
May. 03, 1994
Filed:
Jul. 07, 1992
Applicant:
Inventors:
Chien-Hsing Hsien, Hsinchu, TW;
Eric Han, Hsinchu, TW;
Jin-Chyuan Hung, Hsinchu, TW;
Hwei-Shong Chun, Hsinchu, TW;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08G / ;
U.S. Cl.
CPC ...
340907 ; 340909 ; 340915 ; 315360 ;
Abstract
A control apparatus for a network traffic light is provided with a main control device, a lamp control device, and a pair of power transmission lines connected between the main control device and the lamp control device in a ring-shaped fashion to carry the control signals which control each lamp set at an intersection. In this way, the layout engineering is simplified, and thus its cost is reduced. The ring-shaped layout permits the network traffic light to sustain its operation even if some of its lines are broken during road works. Maintenance of the control apparatus is also easy and fast.