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. 20, 1998
Filed:
Jan. 19, 1995
Geoffrey O Thompson, Palo Alto, CA (US);
Paul Woodruff, Sunnyvale, CA (US);
Bay Networks, Inc., Santa Clara, CA (US);
Abstract
A method and apparatus for a node to automatically switch between half-duplex and full-duplex transmission in CSMA/CD networks characterized by a first and second device coupled over a communication link to allow communication of information and control signals between the first and second device. Each of the two devices include a transmit circuit and a receive circuit, wherein the first device begins to transmit information on a first communication circuit, the first communication circuit providing for communication of information between the first device and the second device, and the second device receives the transmitted information. If, while the first device is transmitting information to the second device, the second device begins to transmit information on a second communication circuit, the second communication circuit providing for communication of information between the second device and the first device, and the first device receives the transmitted information, full-duplex communication therebetween is established. If, while the first device is transmitting information to the second device, the second device transmits a collision detect signal and the first device receives the collision detect signal, half-duplex communication therebetween is subsequently established.