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:
Dec. 06, 2005
Filed:
Jun. 03, 2003
Petro Estakhri, Pleasanton, CA (US);
Sam Nemazie, San Jose, CA (US);
Petro Estakhri, Pleasanton, CA (US);
Sam Nemazie, San Jose, CA (US);
Lexar Media, Inc., Fremont, CA (US);
Abstract
An embodiment of the present invention includes a high speed multi-media card system for automatic detection of high speed communication including a host and one or more media cards, coupled to the host through a one or more of data lines, at least one of which is a serial data line. The one or more media cards each have a unique card identification number (CID) associated therewith. In response to a first command from the host requesting each card's unique CID and responsive thereto, said one or more media cards send their respective CID, through the serial data line, to the host and if the sent CID matches that which is expected from the host, the host transmits a second command assigning a relative card address (RCA) to the card whose CID made the match. The one or more media cards drive a predetermined value on all or a portion of the one or more of data lines and the host automatically senses the predetermined value which is indicative of operation at high speeds by the cards which have driven the predetermined value onto the data lines. The host communicates, in high speed mode, with the cards which have driven the predetermined value onto the data lines.