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:
Nov. 06, 2007
Filed:
Jul. 29, 2005
Jin Song Liu, Shanghai, CN;
Michael L. Snodgrass, Allentown, PA (US);
Jia Jing Wang, Arlington, VA (US);
Tao Wang, Shanghai, CN;
Wen Zhu, Shanghai, CN;
Jin Song Liu, Shanghai, CN;
Michael L. Snodgrass, Allentown, PA (US);
Jia Jing Wang, Arlington, VA (US);
Tao Wang, Shanghai, CN;
Wen Zhu, Shanghai, CN;
Agere Systems Inc., Allentown, PA (US);
Abstract
A read activity detector circuit for use in a random access memory array includes a plurality of synchronizer circuits operative to receive a plurality of respective reference clock signals having a frequency that is substantially the same as a core reference clock and having different phases relative to one another. Each of the synchronizer circuits, in response to a first control signal presented thereto, generates an output signal having a rising edge or a falling edge which is substantially aligned to a rising edge or a falling edge of the reference clock signal corresponding thereto. The activity detector circuit further includes a controller operative to receive the respective output signals from the plurality of synchronizer circuits and to generate an output signal as a function thereof which is indicative of data to be read from the random access memory array.