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:
Oct. 09, 2012
Filed:
Mar. 04, 2010
Shuo He, Shanghai, CN;
Hongwen Meng, Shanghai, CN;
Jia HU, Shanghai, CN;
China Unionpay Co., Ltd., Shanghai, CN;
Abstract
A smart SD card and a method of accessing the same are disclosed, which resolve a problem of incompatibilities between drivers of various smart SD cards. The smart SD card includes a SD interface (), a SD memory (), a smart card () and a SD controller (). The method of accessing the SD card includes: an application program performing a write operation on the smart card interface file and notifying the SD controller establishing a communication connection with the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller; the establishing of the connection being successful, the application program writing the smart card operation commands into the interface file, and the SD controller forwarding the commands to the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller.