Output buffer circuit having pre-emphasis function

Details Output buffer circuit having pre-emphasis function Output buffer circuit having pre-emphasis function

2007-01-16

2007-01-16

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C326S026000, C375S219000, C375S220000, C375S346000

Reexamination Certificate

active

10758535

ABSTRACT:
An output buffer circuit having a so-called pre-emphasis function of emphasizing a signal waveform in data transmission in an information processing device or the like according to an attenuation of a transmission line, includes a first buffer which receives input of an input signal which gives a logical value of a signal to drive the transmission line and a second buffer which drives the transmission line in cooperation with the first buffer, thereby cutting off, at the time of de-pre-emphasis when the pre-emphasis function is disabled, current flowing through the second buffer.

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Japanese Office Action dated Aug. 5, 2005 (with partial English translation).

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