Self-calibrating writer

Details Self-calibrating writer Self-calibrating writer

2007-11-05

2010-06-01

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S086000, C327S108000

Reexamination Certificate

active

07728618

ABSTRACT:
In accordance with the invention, a method, system and apparatus are presented that matches the output impedance of a driver to the impedance of a transmission line. A method for matching the impedance between a driver and a transmission line, wherein the transmission line is between the driver and a load can include transmitting a first pulse from the driver to the load through the transmission line, wherein a first reflection from the transmitted first pulse occurs after a first time, measuring a second reflection from the transmitted first pulse after a second time, and adjusting the calibration of the driver in response to the measured second reflection.

REFERENCES:
patent: 5783965 (1998-07-01), Iwatsuki et al.
patent: 5898326 (1999-04-01), Okayasu
patent: 5955911 (1999-09-01), Drost et al.
patent: 6670821 (2003-12-01), Ajit
patent: 6734712 (2004-05-01), Holdenried et al.
patent: 2004/0090239 (2004-05-01), Ikeoku et al.

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