Telecommunications – Wireless distribution system – Combined with diverse art device
Reexamination Certificate
2008-05-20
2008-05-20
Nguyen, Tu (Department: 2618)
Telecommunications
Wireless distribution system
Combined with diverse art device
C725S151000
Reexamination Certificate
active
07376387
ABSTRACT:
A translation table is provided for a set top box in order to convert satellite frequencies of a Satellite Master Antenna Television (SMATV) system to corresponding cable frequencies of a CATV distribution system. During an autoscan operation, the translation table is automatically populated with satellite frequencies and their associated cable frequencies. The satellite frequencies carry satellite QPSK signals, and the cable frequencies carry corresponding QAM signals. During autoscan, the cable frequencies are scanned. For each of the cable frequencies carrying a QAM signal, satellite service data is read from the corresponding QAM signal. The satellite service data includes the satellite frequencies. The satellite frequency contained in the satellite service data read from each QAM signal is stored in the translation table in association with the corresponding cable frequency.
REFERENCES:
patent: 6133910 (2000-10-01), Stinebruner
patent: 6493873 (2002-12-01), Williams
patent: 6496229 (2002-12-01), Limberg
patent: 2002/0056140 (2002-05-01), Oishi et al.
patent: 2003/0133051 (2003-07-01), Oishi et al.
Nguyen Tu
Zenith Electronics LLC
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