Method and circuit for pre-emphasis equalization in high speed data communications
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 27, 2003
Grant Date -
May 16, 2002
app pub date -
Nov 13, 2001
filing date -
Nov 13, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and circuit for pre-emphasis equalization of a high speed data communication system can be provided through the use of programmable pulse shaping. A data communication system configured with the pre-emphasis equalization circuit operates by receiving an input data stream and outputting a data stream for transmission through an interconnect or other transmission channel. The data can be passed through an output buffer configured with programmable pre-emphasis equalization, having input inverters at an input stage and output inverters at an output stage. During operation, once an input signal to the input stage transitions, for example from a low to a high state, an input signal to the output stage is configured to a full amplitude to drive the transmission channel. Once the output stage transitions to a full amplitude, the input of the output stage is configured closer to a mid-scale amplitude. The amount of amplitude change from full scale back to mid-scale determines the amount of equalization to be provided by the output buffer to the transmission channel.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully