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:
Apr. 26, 2011
Filed:
Dec. 31, 2007
Lieh-chiu Lin, Kaohsiung, TW;
Shyh-shyuan Sheu, Taichung, TW;
Pei-chia Chiang, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A sensing circuit of a phase change memory. The sensing circuit comprises a data current source and a reference current source, a storage memory device and a reference memory device, a storage switch and a reference switch, an auxiliary current source and a comparator. First terminals of the storage memory device and the reference memory device are respectively coupled to the data current source and the reference current source. The storage switch and the reference switch are respectively coupled to second terminals of the storage memory device and the reference memory device. The auxiliary current source is dynamically coupled to the first terminals of the storage memory device and the reference memory device. The comparator is coupled to the first terminals of the storage memory device and the reference memory device.