Method and apparatus for storing and presenting visual and audib

Details Method and apparatus for storing and presenting visual and audib Method and apparatus for storing and presenting visual and audib

1997-11-17

1999-06-22

Dinh, Tan

Dynamic information storage or retrieval

Combined independent audio systems

Combining signals to form composite

434310, 600 28, H04B 120

Patent

active

059149140

ABSTRACT:
A method and apparatus for retrieving and presenting visual and audible information to an individual. Audio source signals from each channel of a stereophonic audio source are processed by a microcontroller-controlled circuit that also receives commands from a programmer. The commands from the programmer cause the generation of pulsed control signals for each channel. The pulsed control signals continuously contain only low audio frequencies. The audio source signals are processed so that their spectral frequencies are translated above the low audio frequency range of the pulsed control signals and inverted. The pulsed control signals for each channel are then added to the corresponding processed audio source signals to produce two combined audio signals. The combined audio signals are then recorded on a compact disc which may be read. When retrieving and presenting the information, the pulsed control signals and processed audio source signals are separated by filtering and the processed audio source signals are reprocessed to recreate the original audio source signals. The pulsed control signals are used to drive separate channel LED displays built into a headset visor and the audio source signals are concurrently played through speakers in the headset.

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