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:
Jan. 14, 2014
Filed:
Nov. 05, 2012
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Shi-Hung Wang, Taichung, TW;
Tsung-Hsiung Li, New Taipei, TW;
Kuang-Kai Yen, Kaohsiung, TW;
Wei-Li Chen, Hsin-Chu, TW;
Chewn-Pu Jou, Hsin-Chu, TW;
Fan-Ming Kuo, Zhubei, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Abstract
A voltage scaling circuit includes a first critical path and an edge detection unit. The first critical path includes an input and an output. The edge detection unit includes a first input, a second input, a counter and a time-to-digital converter (TDC). The input of the first critical path is electrically connected to the first input of the edge detection unit, and the output of the critical path is electrically connected to the second input of the edge detection unit. The counter is configured to measure a duration between an active edge of a start signal on the first input of the edge detection unit and an active edge of a stop signal on the second input of the edge detection unit in a clock period basis. The TDC is configured to measure a beginning portion and an end portion of the duration.