Systems and methods for power reduction in systems having removable media devices
First Claim
Patent Images
1. A system, comprising:
- a processor;
a host controller coupled to the processor;
a card reader coupled to the host controller; and
wherein the card reader does not apply power to a memory card inserted into the card reader if the memory card has not been accessed in a first specified amount of time.
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Accused Products
Abstract
In some embodiments, if a card in a card reader has not been accessed in a first specified amount of time, the card may be powered down. The card may be powered back up if an attempt is made to access the card. In some embodiments, if a memory card is in the memory card slot of the card reader, but has not been accessed in a second specified amount of time, the card reader may be electrically disconnected from the host controller if a sideband signal is available to signal the card reader when to electrically reconnect.
22 Citations
18 Claims
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1. A system, comprising:
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a processor;
a host controller coupled to the processor;
a card reader coupled to the host controller; and
wherein the card reader does not apply power to a memory card inserted into the card reader if the memory card has not been accessed in a first specified amount of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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applying power to a memory card in a card reader coupled to a computer;
detecting whether a memory card has been accessed during a first specified amount of time;
if a memory card has not been accessed during a first specified amount of time, removing power from the memory card; and
if a memory card has been accessed during a first specified amount of time, continuing to power the memory card. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification