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. 10, 1994
Filed:
Dec. 14, 1992
Robert M Bartis, Neptune, NJ (US);
Charles W Gritton, North Brunswick, NJ (US);
Ying T Tao, Manalapan, NJ (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
A multiple-master, digital communication technique is provided which employs standard universal asynchronous receivers and transmitters ('UARTs') linked to a common data transmission bus, and a hardware-based inter-station contention scheme utilizing a bus separate from that employed for data transmission. This communication technique effectively eliminates any window of collision for data transmitted on the bus, and greatly reduces the amount of software processing required to resolve contention between stations. In addition, the hardware required to support the dedicated contention bus scheme is comprised of inexpensive, commercially available logic gates.