Tap antenna unit
First Claim
1. In combination, one of a wireless remote control device or a wireless information presentation device and a tap antenna unit including signal splitting means, coupled to a coaxial cable which is servicing a consumer electronic device for splitting off a non-telephone, low frequency band signal from the coaxial cable;
- a filter coupled to an output of said signal splitting means for selecting a low-level sharp frequency band in the energy spectrum of the coaxial cable;
means for demodulating a digital data signal carried by said low-level frequency band to a demodulated digital output signal;
means for modulating the digital output signal onto a carrier in an unlicensed frequency band; and
an output antenna which is coupled to said modulating means for transmitting the output modulated signal over a limited transmitting-receiving area to a display device of one of said remote control device or said information presentation device without the use of a routing terminator.
5 Assignments
0 Petitions
Accused Products
Abstract
The tap antenna unit includes signal splitting circuitry, coupled to a coaxial cable which is servicing a consumer electronic device, such as a television set, for splitting off a signal from the coaxial cable; a filter coupled to an output of the signal splitting circuitry for selecting a low-level sharp frequency band in the energy spectrum of the coaxial cable; circuitry for demodulating a signal carried by the low-level frequency band; circuitry for modulating the output signal onto a carrier in an unlicensed frequency band; and an output antenna which is coupled to the modulating circuitry and which is capable of transmitting the output modulated signal over a limited transmitting-receiving area.
66 Citations
13 Claims
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1. In combination, one of a wireless remote control device or a wireless information presentation device and a tap antenna unit including signal splitting means, coupled to a coaxial cable which is servicing a consumer electronic device for splitting off a non-telephone, low frequency band signal from the coaxial cable;
- a filter coupled to an output of said signal splitting means for selecting a low-level sharp frequency band in the energy spectrum of the coaxial cable;
means for demodulating a digital data signal carried by said low-level frequency band to a demodulated digital output signal;
means for modulating the digital output signal onto a carrier in an unlicensed frequency band; and
an output antenna which is coupled to said modulating means for transmitting the output modulated signal over a limited transmitting-receiving area to a display device of one of said remote control device or said information presentation device without the use of a routing terminator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a filter coupled to an output of said signal splitting means for selecting a low-level sharp frequency band in the energy spectrum of the coaxial cable;
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9. A method of transmitting a local area signal carried in by a coaxial cable connected to a consumer-electronic device to one of a wireless remote control device or a wireless information presentation device, said method including the steps of:
- splitting off a non-telephone, low frequency band signal from a coaxial cable;
filtering the split off signal for selecting a low level sharp frequency band in the energy spectrum of the coaxial cable;
demodulating a digital data signal carried by the low level frequency band to a demodulated digital output signal;
modulating the output signal from the demodulator onto a carrier signal having a frequency in an unlicensed frequency band and outputting said signal in a local area via an antenna to a display device of one of the wireless remote control device or the wireless information presentation device without the use of a routing terminator. - View Dependent Claims (10, 11, 12, 13)
- splitting off a non-telephone, low frequency band signal from a coaxial cable;
Specification