Method and system for controlling power provided to an accessory
First Claim
1. A portable media player comprising:
- a storage medium to store media assets;
a processor configured to retrieve and play stored media assets from the storage medium; and
an interface in communication with the processor and adapted to communicate with an accessory by exchanging a plurality of commands with the accessory, the plurality of commands comprising;
a first command for requesting a current power state of the accessory, the first command being sendable by the media player;
a second command for communicating information about the current power state of the accessory, the second command being receivable by the media player;
a third command for instructing the accessory to set a new power state of the accessory, the third command being sendable by the media player; and
a fourth command for communicating acceptance of the new power setting by the accessory, the second command being receivable by the media player.
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Abstract
A method for a portable media player to control power provided an accessory is disclosed. The method includes requesting information about the power capabilities of the accessory by the portable media player. The method further includes providing information about the power capabilities of the accessory by the accessory to the portable media player, and utilizing the information to set the power of the accessory. A method and system in accordance with the present invention provides a system that allows a portable media player to obtain information from an accessory concerning its power requirements. A portable media player can then utilize the power requirements information to allow for the powering of the accessory when connected to the portable media player.
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Citations
24 Claims
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1. A portable media player comprising:
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a storage medium to store media assets; a processor configured to retrieve and play stored media assets from the storage medium; and an interface in communication with the processor and adapted to communicate with an accessory by exchanging a plurality of commands with the accessory, the plurality of commands comprising; a first command for requesting a current power state of the accessory, the first command being sendable by the media player; a second command for communicating information about the current power state of the accessory, the second command being receivable by the media player; a third command for instructing the accessory to set a new power state of the accessory, the third command being sendable by the media player; and a fourth command for communicating acceptance of the new power setting by the accessory, the second command being receivable by the media player. - View Dependent Claims (2, 3, 4, 5)
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6. A computer readable medium encoded with program instructions which when executed by a portable media player cause the portable media player to execute a method for controlling power settings of an accessory, the method comprising:
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sending a first command to the accessory to request information about a current power state of the accessory; receiving a second command from the accessory, the second command including the requested information about the current power state of the accessory; and sending a third command to the accessory, the third command instructing the accessory to set a new power state. - View Dependent Claims (7, 8)
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9. A method for operating a media player coupled to an accessory, the method comprising, by the media player:
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sending to the accessory a request for information indicating power capabilities of the accessory; receiving the requested information from the accessory; determining a new power state for the accessory based at least in part on the received information; and sending a power setting command to the accessory, the power setting command instructing the accessory to set a power state of the accessory to the new power state. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A portable media player comprising:
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an interface adapted to be coupled with an accessory and configured to support an accessory protocol for exchanging with the accessory commands and information related to power management; and a control module coupled to the interface, the control module being configured to; send to the accessory via the interface a request for information indicating power capabilities of the accessory; receive the requested information from the accessory via the interface; and send a power setting command to the accessory via the interface, the power setting command instructing the accessory to set a power state of the accessory to a new power state determined by the media player, wherein the accessory sets the power state of the accessory to the new power state in response to the power setting command. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification