Patent ID: 6944212

Claim:
A system to transmit and receive information by encoding and decoding discreet data into and from analog waveforms, said system comprising: a) a first microcontroller adapted to receive a digital data stream, said microcontroller being arranged to manipulate said digital data stream to frame said digital data stream to provide data bit assembly in accordance with a desired protocol, to provide for addition of miscellaneous flag data, and to provide for the addition of error correction data, and also arranged to output said manipulated data as a manipulated digital data stream; b) a continuously variable slope delta demodulator (CVSD) to receive said manipulated digital data stream and to convert said manipulated digital stream to an analog signal; c) a continuously variable slope delta (CVSD) modulator arranged to receive the analog output signal from said CVSD demodulator, and to output a digital data stream; d) a second microprocessor arranged to receive said digital data stream from said CVSD modulator and to unframe said digital data stream, perform error checking and corrections, perform data bit deinterleaving according to said desired protocol, and output a recovered digital data stream corresponding to said initial digital data stream.