Patent ID: 8065594
Filing Date: 2011-11-22
Classification: H04L

Abstract:
1. A method for transmitting ancillary data within an 8VSB digital television broadcasting signal, said method comprising the steps of: coding said ancillary data using parallelly concatenated convolutional codes, which step generates coded ancillary data; placing said coded ancillary data within 1656-bit data segments; time-division multiplexing said 1656-bit data segments having said coded ancillary data placed therewithin, together with any other 1656-bit data segments to be included in said 8VSB digital television broadcasting signal, to form a stream of 1656-bit data segments; convolutionally byte interleaving successive 8-bit bytes of said stream of 1656-bit data segments to generate byte-interleaved data; symbol coding said byte-interleaved data to generate symbol codes, which step includes ⅔ trellis coding said byte-interleaved data; generating plural-level 8 VSB modulating signal responsive to said symbol codes; and modulating a radio-frequency carrier wave responsive to said plural-level 8 VSB modulating signal to generate said 8VSB digital television broadcasting signal.