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:
Oct. 10, 1989
Filed:
Aug. 04, 1988
Toshimitsu Tobita, Katsuta, JP;
Hiromi Inaba, Katsuta, JP;
Masachika Yamazaki, Katsuta, JP;
Masato Suzuki, Ibaraki, JP;
Yuzo Morita, Hitachi, JP;
Toshiki Kajiyama, Katsuta, JP;
Kiyoshi Nakamura, Katsuta, JP;
Kenji Yoneda, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In elevator equipment in which an elevator controller is connected by a common transmission line to an elevator cage and a plurality of apparatus installed at elevator stops on respective floors, signals are transmitted from the elevator controller to the elevator cage and the plurality of apparatus of elevator stops on respective floors. Information transmitted between the elevator controller and the cage as well as each apparatus at elevator stop on each floor is sorted into information which is different for each apparatus on each floor and the cage (unique information) and information which is the same for the plurality of apparatus at elevator stops on respective floors and the cage (common information), and the unique information is transmitted during a first period and the common information is transmitted during a second period, thereby reducing time required for transmission of information during one cycle.