نتایج جستجو برای: clock

تعداد نتایج: 47430  

2008
Dimitrios Velenis Marios C. Papaefthymiou Eby G. Friedman

Controlling the clock signal delay in the presence of various noise sources, process parameter variations, and environmental effects represents a fundamental problem in the design of high speed synchronous circuits. A methodology for enhancing the layout of the clock tree to reduce the uncertainty of the clock signal is presented in this paper. The primary objective of the proposed methodology ...

2010
Yang Jiang Kim-Fai Wong Chen-Yan Cai Sai-Weng Sin Seng-Pan U Rui Paulo Martins

A clock generation technique for reducing the clockjitter sensitivity of Switched current (SI) Return-to-Zero (RZ) DAC in CT ΣΔ modulators is presented in this paper. While realizing the clock-jitter insensitivity, this technique ensures that the feedback period can be utilized more efficiently so that the amplitude of feedback current can be reduced. The proposed technique employs simple digit...

Journal: :Science 2016

Journal: :Distributed Computing 2006

Journal: :Journal of Clinical Sleep Medicine 2011

Journal: :Nature Reviews Molecular Cell Biology 2011

Journal: :PLOS Biology 2015

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
Martha Hotz Vitaterna Caroline H Ko Anne-Marie Chang Ethan D Buhr Ethan M Fruechte Andrew Schook Marina P Antoch Fred W Turek Joseph S Takahashi

The mouse Clock gene encodes a basic helix-loop-helix-PAS transcription factor, CLOCK, that acts in concert with BMAL1 to form the positive elements of the circadian clock mechanism in mammals. The original Clock mutant allele is a dominant negative (antimorphic) mutation that deletes exon 19 and causes an internal deletion of 51 aa in the C-terminal activation domain of the CLOCK protein. Here...

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