Dynamic power management in a portable media delivery system
AssigneeApple Inc.
InventorsJesse L. Dorogusker, Donald J. Novotney, Scott Krueger, Robert Michelet, Jeffrey Allan Hammerstrom
Life of this patent
Estimating the term…
Abstract
A consumer electronic product (e.g., a portable media player ported to a media delivery accessory) is powered by a limited capacity DC power source (such as a battery or mini-fuel cell). The consumer electronic product limits the maximum allowable sound pressure level (SPL) that can be produced by the speakers. In one embodiment, the maximum allowable SPL is based upon an amount of stored energy available in the limited capacity DC power source.
Claims8
A method of shutting down a consumer electronic product so as to avoid generation of audio artifacts, comprising:
- determining if a shutdown is imminent, muting an audio amplifier;
- providing a user feedback indicating that a loss of power is imminent;
- if all remaining electronic components are not powered down, then powering down all remaining electronic components in the consumer electronic product;
- if all residual power is exhausted, then discontinuing the user feedback.
Computer program product executable by a processor for shutting down a consumer electronic product so as to avoid generation of audio artifacts, comprising:
- computer code for determining if a shutdown is imminent, computer code for muting an audio amplifier;
- computer code for providing a user feedback indicating that a loss of power is imminent;
- computer code for powering down all remaining electronic components in the consumer electronic product if all remaining electronic components are not powered down;
- computer code for discontinuing the user feedback if all residual power is exhausted;
- and
- computer readable medium for storing the computer code.
Dependencies are inferred from the claim text.