US 5,689,477 A · Method and apparatus for storing and presenting visual and audible information to an individual

Abstract

A method and apparatus for storing and presenting visual and audible information to an individual. Audio source signals from a stereophonic audio source are processed by a microcontroller-controlled circuit that also receives commands from a programmer. The programmer commands cause the generation of pulsed low audio frequency control signals for each channel. The audio source signals are processed so that their frequencies are translated above the low audio frequency range of the pulsed control signals and inverted. The pulsed control signals are then added to the corresponding processed audio source signals to produce two combined audio signals which are then recorded on a compact disc. To replay the recorded information, the recorded combined audio signals are read from the compact disc. 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 drive separate channel LED displays built into a headset visor and the audio source signals are concurrently played through speakers in the headset. Also disclosed is a method for using the apparatus so that the individual can learn information.

Claims12

Dependent claims

A method for recording for subsequent retrieval at least one audio signal and at least one control signal onto a storage medium having a frequency response range from a low frequency f.sub.0 to a high frequency f.sub.h, wherein the at least one control signal has a frequency range of f.sub.0 to f.sub.1, and the at least one audio signal has a frequency range from f.sub.0 to f.sub.2, where f.sub.0 <f.sub.1 <f.sub.2 <f.sub.h, the method comprising steps of:

a) transforming the at least one audio signal and the at least one control signal to produce a composite transformed signal occupying at least two distinct audio frequency ranges that both fall within the response frequency range f.sub.0 to f.sub.h of the storage medium, said at least two distinct audio frequency ranges include a lower composite transformed frequency range from f.sub.0 to f.sub.1, and an upper composite transformed frequency range from a value>f.sub.1 to f.sub.h ;
b) recording the composite transformed audio signal on the storage medium;
and
c) the step of transforming the at least one audio signal causing the frequency range occupied by the transformed at least one audio signal to be shifted and inverted, so that the frequency f.sub.0 of the at least one audio signal is transformed to approach a high end f.sub.h of the upper composite transformed frequency range and the frequency f.sub.2 of the at least one audio signal is transformed to approach said value>f.sub.1 at a low end of the lower composite transformed frequency range.

1 more element

An apparatus for recording an audio signal and a control signal onto a storage medium, for subsequent retrieval from the storage medium, the apparatus comprising:

means for transforming the audio signal and the control signal to produce a composite transformed signal occupying at least first and second distinct audio frequency ranges, the at least first and second distinct audio frequency ranges falling within an audio response frequency range of the storage medium;
and
means for recording the transformed signal onto the storage medium wherein the control signal occupies a frequency range from a lower frequency limit f.sub.0 to a relatively higher frequency limit f.sub.1, and the signal occupies a frequency range from a lower frequency limit f.sub.0 to a higher frequency limit f.sub.2 and the composite transformed signal occupies a transformed frequency range from a lower transformed frequency f.sub.0 to a high transformed frequency limit f.sub.h, where f.sub.0 <f.sub.1 <f.sub.2 f.sub.h, the means for transforming the audio signal further causing the frequency range occupied by the audio signal to be inverted and shifted, so that the lower frequency limit f.sub.0 of the audio signal is transformed into the second distinct audio frequency range of the composite transformed signal approaching f.sub.h and the high frequency limit f.sub.2 of the audio signal is transformed so as to reside at a lower limit of said second distinct audio frequency range and above frequency f.sub.1.

An apparatus for recording an audio signal and a second signal into a storage medium, for subsequent retrieval from the storage medium the apparatus comprising:

a signal processor to transform the audio signal and the second signal to produce a transformed signal occupying first and second distinct audio frequency ranges both falling within an audio response frequency range of the storage medium;
and
a recorder to record the transformed signal on the storage medium wherein the second signal occupies a frequency range from a lower frequency f.sub.0 to a higher frequency f.sub.1, the audio signal occupies a frequency range from said lower frequency f.sub.0 to an even high frequency f.sub.2, and the transformed signal occupies a transformed frequency range from a lower transformed frequency f.sub.0 to an upper transformed frequency f.sub.h where f.sub.0 <f.sub.1 <f.sub.2 <f.sub.h, the signal processor further causing the frequency range occupied by the audio signal to be inverted and shifted, so that the lower frequency f.sub.0 of the audio signal is transformed into the upper transformed frequency f.sub.h and the frequency f.sub.2 of the audio signal is transformed into a relatively lower portion of said second distinct audio frequency range of said transformed signal above said frequency f.sub.1.

Dependencies are inferred from the claim text.

Method and apparatus for storing and presenting visual and audible information to an individual

Life of this patent

Method and apparatus for storing and presenting visual and audible information to an individual

Life of this patent

Abstract

Claims12