The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Aug. 18, 2006
Chi-won Kim, Hwascong-si, KR;
Myoung-bo Kwak, Seoul, KR;
Jong-shin Shin, Anyang-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A pre-emphasis circuit capable of controlling the slew rate of a signal output from a buffer that transfers the output signal to an output driver to increase the range of a controllable voltage step includes a first buffer, a second buffer, and an output driver. The first buffer buffers first and second main input signals having phases opposite to each other, outputs first and second main output signals, and controls slew rates of the first and second main output signals using at least one main control signal. The second buffer buffers first and second sub-input signals having phases opposite to each other, outputs first and sub-output signals, and controls slew rates of the first and second sub-output signals using at least one sub-control signal. The output driver generates first and second output signals having opposite phases using at least two control signals and the output signals of the first and second buffers.