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VSB transmission system

  • US 7,613,246 B2
  • Filed: 06/22/2007
  • Issued: 11/03/2009
  • Est. Priority Date: 10/02/2000
  • Status: Active Grant
First Claim
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1. A method of processing a digital television (DTV) signal in a DTV receiver, the method comprising:

  • receiving digital broadcast data, wherein the digital broadcast data result from encoding an input bit using a convolutional encoder to output first and second data bits, multiplexing the first and second data bits with ATSC data bits using a multiplexer to output third and fourth data bits, and encoding the third and fourth data bits using a TCM encoder to output fifth, sixth, and seventh data bits, wherein encoding the input bit using the convolutional encoder comprises;

    pre-storing a first memory value in a first memory, the first memory value being a previous second data bit output from the convolutional encoder;

    adding the input bit to the first memory value pre-stored in the first memory to obtain a second memory value; and

    storing the second memory value in a second memory, wherein the first data bit is based on the input bit and the second data bit is the second memory value stored in the second memory;

    performing TCM decoding on the received broadcast data at a rate of 2/3; and

    decoding the TCM-decoded broadcast data at a rate of 1/2.

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