Compensating dc loss in usb 2.0 high speed applications
AssigneeTexas Instruments Incorporated
InventorsYonghui TANG, Yanli FAN
Life of this patent
Estimating the term…
Abstract
In an embodiment, a current source is coupled to a first current terminal of a switch, the second current terminal of which is coupled to a first data line in a communication system. An edge detector has a first input, a second input, and an output, in which the first input is coupled to a second data line in the communication system, the second input is coupled to the first data line, and the output is coupled to a control terminal of the switch. The first and second data lines may be positive and negative data lines, respectively, of the communication system.
Claims20
A method, comprising:
- detecting a non-transition period of a signal on a positive data line and a negative data line;
- in response to detecting the non-transition period, injecting a current into one of the positive data line or the negative data line;
- and
- in response to not detecting the non-transition period, ceasing the injection of the current.
A system, comprising:
- detection circuitry configurable to detect a non-transition period of a signal transmitted through a positive data line and a negative data line;
- and
- current injection circuitry configurable to:
- in response to detecting the non-transition period, inject a current into one of the positive data line or the negative data line;
- and
- in response to not detecting the non-transition period, cease the injection of the current.
Dependencies are inferred from the claim text.