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:
Apr. 12, 1994
Filed:
Dec. 28, 1990
Daniel Budin, Newton, MA (US);
Yoseph Linde, Needham, MA (US);
Gordon Saussy, Brighton, MA (US);
Robert Snyder, Westford, MA (US);
Jack W Lee, Brookline, MA (US);
Chipcom Corporation, Southborough, MA (US);
Abstract
A system is provided implementing an extremely high speed link allowing selection of either twisted pair (or like media) and fiber media in to provide a high speed multimedia local area network. A high speed transmission link for twisted pair, coaxial cable media or the like includes a transmitter with a conversion device for receiving fiber optic data interface signals intended to drive a fiber optic data interface and for converting these fiber optic data interface signals into high speed transmission link signals of a form suitable to drive a twisted pair medium. A receiver is provided and includes a reconversion device for regenerating the signal received from the twisted pair medium back to an adequate signal level. The transmitter conversion device includes a buffer cooperating with an equalizer and a filter for forming the high speed transmission link signal. The equalizer provides frequency domain compensation for the characteristics of the twisted pair medium. The filter rejects signals outside a band of data signaling. The receiver reconversion device includes a filter connected to said twisted pair medium to reject signals outside a band of data signaling, a buffer for regenerating the signal received from the twisted pair and a low frequency restoration circuit which employs a decision feedback technique for the compensation of the media coupling circuit's low frequency response.