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:
Jun. 20, 2006
Filed:
Jun. 28, 2004
Abhijit M. Phanse, Santa Clara, CA (US);
Peter J. Sallaway, San Diego, CA (US);
James B. Wieser, Pleasanton, CA (US);
Abhijit M. Phanse, Santa Clara, CA (US);
Peter J. Sallaway, San Diego, CA (US);
James B. Wieser, Pleasanton, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
There is disclosed a transceiver for use in a high speed Ethernet local area network (LAN). The transceiver comprises: 1) front-end analog signal processing circuitry comprising: a) a line driver for transmitting an outgoing analog signal to an external cable; b) a DC offset correction circuit for reducing a DC component in an incoming analog signal; c) an echo canceller; d) an automatic gain control (AGC) circuit; and e) an adaptive analog equalization filter. The transceiver also comprises: 2) an analog-to-digital converter (ADC) for converting the analog filter incoming signal to a first incoming digital signal; and 3) digital signal processing circuitry comprising: a) a digital finite impulse response (FIR) filter; b) a digital echo cancellation circuit to produce a reduced-echo incoming digital signal; c) a digital automatic gain control (AGC) circuit; and d) a digital base line wander circuit.