Back to results
US 2022/0286334 A1Published application
Channel equalization
AssigneeApple Inc.
InventorsWilliam P. Cornelius, Seungyong Baek
Life of this patent
Estimating the term…
Abstract
Circuits, methods, and apparatus that provide improved data recovery for data transmitted through a channel of limited bandwidth. An example can provide circuits, methods, and apparatus that can equalize losses in a physical channel. This equalization can provide an overall channel response that is more consistent and uniform.
Claims19
A method of setting a characteristic of a continuous-time front end in a receiver, the method comprising:
- with the receiver, receiving a pseudo-random bit stream;
- detecting a first data pattern;
- determining a first amplitude of the received first data pattern;
- detecting a second data pattern;
- determining a second amplitude of the received second data pattern;
- determining a ratio of the second amplitude to the first amplitude;
- and
- using the ratio of the second amplitude to the first amplitude to set the characteristic of the continuous-time front end.
5 more elements
A method of setting a frequency response characteristic of a receiver, the method comprising:
- with a receiver having an input connected to a physical channel, receiving pseudo-random data;
- determining an initial amplitude of the received pseudo-random data;
- decreasing a de-emphasis of an equalizer in the receiver;
- detecting an increased amplitude of the received pseudo-random data;
- and
- using the detected increase to set a frequency response characteristic of the receiver.
3 more elements
A method of setting characteristics for a continuous-time front end, the method comprising:
- receiving a first plurality of tones;
- for each tone, measuring an amplitude of the received tone after the received tone has been output by the continuous-time front end;
- and
- using the measured amplitudes of the received tones to adjust a characteristic of the continuous-time front end.
1 more element
Dependencies are inferred from the claim text.