Patent ID: 6973519
Filing Date: 2005-12-06
Classification: G06F

Abstract:
1. A high speed multi-media card system for automatic detection of high speed communication comprising: 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, said one or more media cards each having a unique card identification number (CID) associated therewith and responsive to a first command from the host requesting each card's unique CID and responsive thereto, said one or more media cards sending 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 transmitting a second command assigning a relative card address (RCA) to the card whose CID made the match, and said one or more media cards driving a predetermined value on all or a portion of the one or more of data lines and said host automatically sensing said predetermined value which is indicative of operation at high speeds by the cards which have driven said predetermined value on the data lines, said host communicating in high speed mode with the cards which have driven the predetermined value on the data lines.