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. 19, 1993
Filed:
Jun. 28, 1991
David C Davies, Chelmsford, MA (US);
Donald G Vonada, Stow, MA (US);
Robert A Curtis, Hudson, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
Transceiver apparatus includes a transmitter circuit constructed with either emitter coupled logic (ECL) circuitry or programmable array logic circuitry, and a receiver circuit constructed with ECL circuitry. The transmitter circuit encodes a binary data signal received for transmission as a three-level modified duobinary encoded data signal and the receiver circuit decodes the received three-level encoded data signal to provide a binary data signal corresponding to the data signal received at the transmitter circuit for transmission. Both the transmitter and receiver circuits include features enabling transmitting and receiving high data-rate data signals.