Patent ID: 8675130

Claim:
An electronic adapter unit, comprising: a portable housing; at least one signal input received or derived from an external audio or video source; at least one signal output coupled to an external audio or video output device; a computer readable medium within the portable housing having stored thereon a plurality of modification profiles; a processor within the portable housing for receiving an audio or video signal from said at least one signal input, applying a selected one of said modification profiles to said audio or video signal based at least in part on a known or detected characteristic of the external audio or video output device coupled to said at least one signal output, and providing a modified audio or video signal to said at least one signal output; and auto-recognition circuitry or logic configured to automatically detect a brand of audio or video output device by conveying a test signal from the electronic adapter unit to the audio or video output device, measuring a frequency and/or time response characteristic of the audio or video output device, and comparing the frequency and/or time response characteristic of the audio or video output device against known frequency and/or time response characteristics of different device brands.