Television – Two-way video and voice communication – User positioning
Patent
1998-03-06
2000-10-03
Pihulic, Daniel T.
Television
Two-way video and voice communication
User positioning
455 51, H04N 710
Patent
active
H00018791
ABSTRACT:
A cable television system (100) includes a head end section (105) for generating a cable signal; a communication medium (110, 117), such as fiber optic cable and coaxial cable, coupled to the head end section (105) for routing the cable signal through the cable television system (100), and cable taps (200) coupled to the communication medium (110, 117) for receiving the cable signal and providing subscriber drops to subscribers of the cable television system (100). As the cable signal is routed through the system (100), the signal levels of the signal decrease, and higher frequencies are attenuated more rapidly than are lower frequencies of the signal. Therefore, taps (200) of the cable television system (100) include equalizer circuits (212) for attenuating lower frequencies of the cable signal to provide relatively flat signal levels at the subscriber drops. The equalizer circuits (212) also conveniently attenuate reverse signals, as necessary, so that relatively equivalent reverse signal levels are seen by the headend section (105).
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Collmus Robert S.
Loveless, Jr. Robert C.
Spriester Bart F.
Barnhardt III Hubert J.
Gardner Kelly A.
Massaroni Kenneth M.
Pihulic Daniel T.
Scientific-Atlanta, Inc.
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