Card and host device

Details Card and host device Card and host device

2008-04-08

2008-04-08

Lee, Michael G. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S492000

Reexamination Certificate

active

11553002

ABSTRACT:
A host device is configured to read and write information from and into a card and to supply a supply voltage that belongs to a first voltage range or a second voltage range which is lower than the first voltage range, and issues a voltage identification command to the card. The voltage identification command includes a voltage range identification section, an error detection section, and a check pattern section. The voltage range identification section includes information indicating which one of the first voltage range and the second voltage range the supply voltage belongs. The error detection section has a pattern configured to enable the card which has received the voltage identification command to detect errors in the voltage identification command. The check pattern section has a preset pattern.

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