System effective to demodulate a modulated code and provide content to a user

摘要

A system and method effective to provide content to a user. The system may include a sound device, a smart phone, and a processor. The sound device may produce a modulated code where different frequencies represent respectively logic 0s and 1s. The smart phone may apply a transform and peak detector to the modulated code to determine logic 0s and 1s to demodulate the code. The smart phone may send the demodulated code to a processor. The processor may receive the code, determine content associated with the code, and send the content over the network to the smart phone. The smart phone may further receive the content and output the content on a display.

主权项

1. A system effective to send code over a network, the system comprising:
a sound device effective to:
modulate the code by assignment of a first set of frequencies for a logic 0 and a second set of frequencies for a logic 1 to produce a modulated code, andoutput the modulated code;a first processor in communication with the sound device, the first processor effective to:
receive the modulated code;apply the modulated code to a transform to produce a signal, the signal relating to a volume magnitude of frequencies in the modulated code;apply the signal to a peak detector to produce a peak history;analyze the peak history to determine a proposed logic 0 and a proposed logic 1 for the modulated code, wherein the determination of the proposed logic 0 and the proposed logic 1 is based on a determination of whether a number of peaks in a frequency range exceeds a threshold number;demodulate the modulated code with the proposed logic 0 and the proposed logic 1 to reproduce the code;generate an enhanced code based on the code; andsend the enhanced code over the network to a second processor.