RF signal injector
First Claim
Patent Images
1. A radio frequency signal injector comprising:
- input connection conductively coupled to an output connection via a conductor;
an antenna connection; and
a band pass filter coupled between the antenna connection and the conductor to couple radio frequency signals received on the antenna connection having a frequency between upper and lower frequency limits to the input connection.
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Abstract
A content delivery system is described that includes a processing unit and a remote device. A signal injector located in proximity to the remote device is coupled to the processing unit via a wired connection. The signal injector collects and filters RF signals from a remote control device and communicates the filtered RF signal to the processing unit over the wired connection.
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Citations
18 Claims
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1. A radio frequency signal injector comprising:
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input connection conductively coupled to an output connection via a conductor;
an antenna connection; and
a band pass filter coupled between the antenna connection and the conductor to couple radio frequency signals received on the antenna connection having a frequency between upper and lower frequency limits to the input connection. - View Dependent Claims (2, 3, 4, 5)
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6. A radio frequency signal injector comprising:
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an input connection to provide an interface to a processing unit conductor;
an output connection to provide an interface to a remote device conductor, wherein the input and output connections are connected together an internal conductor;
an antenna connection to connect to an antenna;
a directional coupler connected to the internal conductor; and
a band pass filter coupled between the antenna connection and the directional coupler to couple radio frequency signals received on the antenna connection having a frequency between upper and lower frequency limits to the internal connector. - View Dependent Claims (7, 8, 9)
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10. A system comprising:
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a processing unit;
a remote device; and
a radio frequency signal injector comprising, an input connection coupled to the processing unit via a multi-conductor input cable, an output connection coupled to the remote unit via a multi-conductor output cable, the input and output connections are electrically connected via internal conductors, wherein signals transmitted by the processing unit are coupled to the remote unit via the input cable, internal conductors and output cable;
an antenna connection to receive radio frequency signals, and a band pass filter coupled between the antenna connection and the internal conductors to couple the radio frequency signals having a frequency between upper and lower frequency limits to the internal conductors. - View Dependent Claims (11, 12, 13)
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14. A method comprising:
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receiving radio frequency (RF) signals using an antenna;
filtering the RF signals to reject components of the RF signals having a frequency outside of a predetermined frequency window; and
coupling the filtered RF signals to a conductor to provide control commands to a processing unit coupled to the conductor. - View Dependent Claims (15, 16, 17, 18)
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Specification