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. 25, 1984
Filed:
Dec. 06, 1982
Emanuel E Enriquez, West Caldwell, NJ (US);
Marjorie J Polis, Morris Township, Morris County, NJ (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A plurality of elevator cars under the supervisory control of a dispatcher processor. A communication processor having a plurality of buffers, a memory shared by both the dispatcher processor and communication processor, and an interface between the communication processor and the elevator cars, cooperatively control the flow of information. Car status information, prepared by the elevator cars, is sent to the dispatcher processor via the interface, buffers and shared memory. Car mode information prepared by the dispatcher is sent to the elevator cars via the shared memory, buffers and interface. A semaphore access arrangement speeds up access to the shared memory, and interrupts control transfer of information between the buffers and interface. In the communication process, the dispatcher processor only loads and unloads the shared memory, and the communication processor loads and unloads both the shared memory and the buffers.