Invention Grant
US09088276B2 Pre-emphasis control circuit for adjusting the magnitude of a signal over a period according to a fraction of a bit-time
有权
预加重控制电路,用于根据比特时间的一小部分调整一段时间内的信号幅度
- Patent Title: Pre-emphasis control circuit for adjusting the magnitude of a signal over a period according to a fraction of a bit-time
- Patent Title (中): 预加重控制电路,用于根据比特时间的一小部分调整一段时间内的信号幅度
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Application No.: US13118634Application Date: 2011-05-31
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Publication No.: US09088276B2Publication Date: 2015-07-21
- Inventor: Sandra Liu , Eric W. Hu , Chih-Tsung Ku
- Applicant: Sandra Liu , Eric W. Hu , Chih-Tsung Ku
- Applicant Address: CA Markham
- Assignee: ATI TECHNOLOGIES ULC
- Current Assignee: ATI TECHNOLOGIES ULC
- Current Assignee Address: CA Markham
- Agency: Meyertons Hood Kivlin Kowert & Goetzel
- Agent Erik A. Heter
- Main IPC: G06F1/00
- IPC: G06F1/00 ; H03K19/00

Abstract:
A pre-emphasis circuit is disclosed. In one embodiment, a pre-emphasis circuit includes a first signal path configured to receive a first signal and a second signal path configured to receive the first signal. The second signal path includes a re-timing circuit configured to delay the first signal by a pre-determined amount to produce a second signal. The pre-emphasis circuit also includes a summing circuit coupled to receive the first signal from the first signal path and the second signal from the second signal path. The summing circuit is configured to add the second signal to the first signal to produce a third signal, wherein the third signal is logically equivalent to the first signal. The third signal has a first magnitude for a first portion of a bit-time of the first signal, and a second magnitude for a second portion of the bit-time of the first signal.
Public/Granted literature
- US20120306893A1 PRE-EMPHASIS CONTROL CIRCUIT Public/Granted day:2012-12-06
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