Patent ID: 8111716
Filing Date: 2012-02-07
Classification: H04H,H04L

Abstract:
1. A transmitter for broadcasting a digital radio signal, the transmitter comprising: a processor for receiving a plurality of data bytes in a block of payload data; identifying two adjacent byte values that do not appear in the block of payload data; calculating an offset between the two adjacent byte values and two adjacent control values; shifting the values of the plurality of data bytes by the offset to produce shifted bytes; inserting a byte code and the shifted bytes in a data unit to produce a modified data unit that does not include escape values, wherein the byte code indicates the offset; and inserting a plurality of additional byte code fields and a plurality of additional shifted bytes in the modified data unit, wherein each of the additional byte code fields indicates an offset of data in one of the plurality of additional shifted bytes; and a modulator for using the modified data unit to modulate a plurality of carriers to produce an output signal.