Patent ID: 7822143

Claim:
A data transfer system for transferring a plurality of bits of data, the system comprising: a data transmitter generating a serial data transmission, the serial data transmission including information defining a plurality of data bits and a word clock, the word clock transmission frequency being less than a transmission frequency of the plurality of data bits in the serial data transmission, wherein a magnitude of the serial data transmission defines a state of the word clock and a plurality of levels of the serial data transmission define digital data within the serial data transmission corresponding to the data defined by the plurality of data bits; and further wherein a highest possible signal level of the serial data transmission indicates a high level for the word clock signal and a lowest possible signal level of the serial data transmission indicates a low level for the word clock, the plurality of levels of the serial data transmission having signal levels between the highest possible signal level and the lowest possible signal level defining digital data, at least some of the signal levels defining digital data having a value that is less than a signal level that is midway between the highest possible and lowest possible signal levels of the serial data transmission; and wherein the system demultiplexes the signal levels of the serial data transmission into a separate clock output signal and plural individual data bit values for each clock output signal.