Patent ID: 7653363

Claim:
A localcast transmitter, comprising: a first interface; a first encoder coupled to said first interface through a second encoder; a packet assembler coupled to said first encoder and to the first interface through the second encoder such that the packet assembler receives input from the first encoder when transmitting at a first transmission speed and the packet assembler receives input from the first interface through the second encoder when transmitting at a second transmission speed, such that first encoder is bypassed when transmitting at the second transmission speed; wherein the packet assembler interleaves a first portion of the input received and a second portion of the input received over a broadcast frame that includes sub frames; wherein the first portion is for transmission at a first latency and the second portion is for transmission at a second latency, the second latency being lower than the first latency; and wherein each sub frame includes data associated with the first portion and data associated with the second portion that are interleaved together; a control function coupled to said first interface, said encoder and said packet assembler; a modulator, coupled to the packet assembler, that comprises a localcast mode; and an antenna coupled to the modulator.