Method, system and apparatus for transmitting, receiving, and reproducing a digital broadcast signal
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United States of America Patent
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Mar 18, 2003
Grant Date -
N/A
app pub date -
Aug 31, 1999
filing date -
Aug 31, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present system comprises a transmitting apparatus for digital broadcast which includes an original signal generating section, delaying section, information amount reducing section, and transmitting section. A receiving and reproducing apparatus for digital broadcast includes a signal reception front stage unit for receiving a high quality signal and a low quality signal, mode determining section and reproducing section composed of a delaying section and selecting section for selectively reproducing the high quality signal and the low quality signal. By employing time diversity, the transmitting apparatus sends the low quality signal having a smaller bandwidth and the high quality signal so that the low quality signal has a preceding time lag relative to the high quality signal, and the receiving apparatus reproduces broadcasting programs. Utilizing the frequency band for broadcast effectively, many broadcasting programs can be increased, and the investment for providing a gap filler can be minimized.
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