Method of selecting an audio source

Dynamic magnetic information storage or retrieval – General recording or reproducing – Recording-or erasing-prevention

Reexamination Certificate

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C360S075000, C369S002000

Reexamination Certificate

active

07630157

ABSTRACT:
A system and method for selecting an audio source is disclosed. The system and method can be used to prevent the selection of a hard disk drive as an audio source if the local ambient pressure in which the motor vehicle is operating is less than a predetermined pressure. The system may obtain ambient pressure data from various different types of sensors including a barometric pressure sensor or an engine combustion sensor. In some cases, the system and method can compute the ambient pressure using global positioning system (GPS) information.

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