Television – Receiver circuitry – Tuning
Patent
1997-10-31
2000-05-16
Faile, Andrew I.
Television
Receiver circuitry
Tuning
348558, 348555, 348554, H04N 550
Patent
active
060644494
ABSTRACT:
A method and apparatus in a client processing system are provided for characterizing an input television signal as broadcast television or cable television and, if the signal is cable television, as IRC cable, HRC cable, or standard cable. The client processing system includes processing circuitry configured to receive hypertext pages from a remote server and to display the hypertext pages on a display device, such as a conventional television set. The client system further includes a television tuner for receiving either cable television or broadcast television signals. When a television signal is initially provided to the client system, the client system executes a routine to automatically characterize the received television signal as broadcast, HRC cable, IRC cable, or standard cable. The characterization is made based upon one or more frequencies at which the incoming television signal is detected.
REFERENCES:
patent: 5087977 (1992-02-01), Suizu
PC Magazine Trend Online, The Big-Tube PCTV, May 28, 1996.
The Destination Big Screen PC Internet Page, Aug. 21, 1996.
Kenyon Lawrence A.
Waserman Steve
White Christopher M.
Faile Andrew I.
Huang Sam
WebTV Networks Inc.
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