METHOD AND SYSTEM FOR CONTROLLING POWER PROVIDED TO AN ACCESSORY

摘要

A method for a portable media player to control power provided to 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. Another embodiment of 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 the accessory is connected to the portable media player.