System and method for sending low rate data on a packet basis in an 8-VSB standard data packet stream
First Claim
1. A system for sending low rate data on a packet basis in an 8-VSB standard data packet stream, said system comprising:
- an 8-VSB signal transmitter capable of transmitting a low rate data packet that comprises data bytes that contain both information bearing bits and non-information bearing bits.
1 Assignment
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Accused Products
Abstract
There is disclosed a system and method for sending low rate data on a packet basis in an 8-VSB standard data packet stream. The system of the invention comprises an 8-VSB signal transmitter that is capable of transmitting either standard full rate data packets or low rate data packets. A low rate data packet contains less data than is normally contained in a standard data full rate data packet. Each data byte in a low rate data packet contains information bearing bits and non-information bearing bits. The system is capable of assigning appropriate bit values to the non-information bearing bits in each data byte of a low rate data packet so that each low rate data packet will be properly encoded for transmission within an 8-VSB standard data packet stream. High definition television signals composed of low rate data packets possess increased resistance to noise and multipath channels.
37 Citations
29 Claims
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1. A system for sending low rate data on a packet basis in an 8-VSB standard data packet stream, said system comprising:
an 8-VSB signal transmitter capable of transmitting a low rate data packet that comprises data bytes that contain both information bearing bits and non-information bearing bits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for sending half rate data on a packet basis in an 8-VSB standard data packet stream in an 8-VSB signal transmitter of the type comprising a Reed Solomon encoder, a data interleaver, and a trellis encoder, wherein said system comprises:
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a first data packet switch before said Reed Solomon encoder capable of determining whether a data packet is a full rate data packet or a half rate data packet, said first data packet switch capable of sending a full rate data packet to said Reed Solomon decoder and capable of sending a half rate data packet to said data interleaver; and
a second data packet switch after said trellis encoder capable of determining whether a data packet is a full rate data packet or a half rate data packet, said second data packet switch capable of sending a full rate data packet to a multiplexer and capable of sending a half rate data packet to an exclusive OR unit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for sending low rate data on a packet basis in an 8-VSB standard data packet stream, said method comprising the steps of:
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placing data in a low rate data packet that comprises data bytes that contain both information bearing bits and non-information bearing bits;
determining the values of said non-information bearing bits in said low rate data packet so that said non-information bearing bits will be correctly encoded; and
transmitting said low rate data packet with an 8-VSB signal transmitter. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A high definition television system comprising a system for sending low rate data on a packet basis in an 8-VSB standard data packet stream, said system comprising:
an 8-VSB signal transmitter capable of transmitting a low rate data packet that comprises data bytes that contain both information bearing bits and non-information bearing bits. - View Dependent Claims (24, 25, 26, 27, 28, 29)
Specification