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:
Jul. 15, 1997
Filed:
Dec. 27, 1995
Namakkal S Sambamurthy, San Jose, CA (US);
Woo-Ping Lai, San Jose, CA (US);
John P VanGilder, Sunnyvale, CA (US);
Seeq Technology, Incorporated, Fremont, CA (US);
Abstract
A downward compatible full-duplex ethernet transceiver associated with either the hub or the remote node in an ethernet local area network (LAN) includes generator circuitry for generating a full-duplex-capability signal indicating its full-duplex capability for transmission over a link of the LAN and detector circuitry for detecting transmission of such a signal from the transceiver with which it is communicating across the link of the LAN. The detector circuitry responds to the full-duplex-capability signal by sending a full-duplex enable signal to an ethernet controller configured according to the present invention. An ethernet controller contains circuitry responsive to the full-duplex-enable signal to disable transmission deferral in response to a carrier-sense signal generated by the transceiver. The full-duplex-capability indicator portion may comprise an extra pulse following an Nth link-integrity pulse after a delay of from about 2 to about 7 microseconds.