Audio controller for portable electronic devices

Details Audio controller for portable electronic devices Audio controller for portable electronic devices

2003-09-09

2008-10-28

Park, Ilwoo (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

C710S008000, C710S062000, C713S300000, C713S324000

Reexamination Certificate

active

07444439

ABSTRACT:
An audio controller for use with laptop and notebook digital computers for reproducing compressed digital audio recordings. The controller includes a drive interface for traversing and accessing audio data files stored on a drive of a computer system. Function keys coupled to the controller permit users to access drives containing desired audio data. The selected audio data is read from the drive into the controller. Decoding circuitry decodes the audio data and generates a decoded audio data stream. The data stream can be converted to an analog signal by the controller, or sent to the audio subsystem of the computer system. Advantageously, the controller operates when the computer system is in an inactive state, for example in power saving mode or OFF, and operates in passthrough mode when the computer system is ON or active.

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