US4761827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarity switch for satellite television receiver
Assignee: STS Enterprises Inc
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Filing: 1985-01-28
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Granted: 1988-08-02
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Expires: 2005-01-28
Abstract
Abstract A polarity switch for connection between a dual antenna system and a satellite television receiver to permit multiple receivers to simultaneously receive channels of different polarity includes a pin diode switch and input circuitry to decode the standard receiver signal previously used to rotate the antenna feed of a single feed antenna.
Inventors
- 👤 Edwin T. Horton
- 👤 William G. Heimbuch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:16
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/08; H04B7/0802; H01; H01Q; H01Q21/00; H01Q21/24; H01Q25/00; H01Q25/001; H01Q3/00; H01Q3/24
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
148 words
In a television system for receiving and processing a plurality of television signals, said system including an antenna means for receiving said television signals, said antenna means having a plurality of outputs, each of said outputs being associated with one of said television signals, and a receiver means for processing one of said television signals, said receiver means having means to generate a coded signal indicative of one of said antenna means outputs and TV signal for processing by the receiver means, the improvement comprising a switching means for connection between the antenna means and the receiver means, said switching means having means to decode the receiver means signal and produce an output corresponding to the selected one of said antenna outputs and TV signal, and means to connect one of said television signals to the receiver means for processing in response to the decoded receiver means signal.
Claim 2
Dependent Claim
148 words
In a television system for receiving and processing a plurality of television signals, said system including an antenna means for receiving said television signals, said antenna means having a plurality of outputs, each of said outputs being associated with one of said television signals, and a receiver means for processing one of said television signals, said receiver means having means to generate a coded signal indicative of one of said antenna means outputs and TV signal for processing by the receiver means, the improvement comprising a switching means for connection between the antenna means and the receiver means, said switching means having means to decode the receiver means signal and produce an output corresponding to the selected one of said antenna outputs and TV signal, and means to connect one of said television signals to the receiver means for processing in response to the decoded receiver means signal.
Claim 3
Dependent Claim
16 words
The device of claim 1 wherein the receiver means signal is a pulse width modulated signal.
Claim 4
Dependent Claim
72 words
The device of claim 1 wherein the decoding means further comprises means to detect the receiver means signal and produce a logic signal in response thereto, a logic means connected to the decoding means, the logic means having means to produce a switching signal in response to the logic signal, and an electronic switching circuit means connected to the logic means and interconnected between the antenna means outputs and the receiver means.
Claim 5
Dependent Claim
16 words
The device of claim 3 wherein the logic means includes means to amplify the logic signal.
Claim 6
Dependent Claim
58 words
The device of claim 4 wherein the logic means comprises at least two inverters connected in series to amplify the logic signal and produce a first output signal and at least one other inverter connected to amplify and invert the logic signal and produce a second output signal, said first and second output signals comprising the switching signal.
Claim 7
Dependent Claim
61 words
The device of claim 5 wherein the electronic switching circuit means comprises a pin diode switch means, said pin diode switch means having at least two states, said logic means being connected to the pin diode switch means so that as the first and second logic means output signals change, said pin diode switch means changes from one state to another.
Claim 8
Dependent Claim
49 words
The device of claim 6 wherein the decoding means comprises means to process the receiver means signal to produce an intermediate signal corresponding to each receiver signal, the intermediate signals having a greater difference in their RMS values than the difference in RMS value of the receiver means signals.
Claim 9
Dependent Claim
21 words
The device of claim 7 wherein the decoding means includes means to process the intermediate signal to produce the logic signal.
Claim 10
Dependent Claim
17 words
The device of claim 3 wherein the electronic switching circuit means includes a pin diode switch circuit.
Claim 11
Dependent Claim
48 words
The device of claim 9 wherein the pin diode switch circuit includes a diode connected between each of said antenna outputs and the receiver means, and the logic means has means to produce a switching signal which forward biases only one of said diodes at any one time.
Claim 12
Dependent Claim
30 words
The device of claim 3 wherein the switching means further comprises a low pass filter means connected between at least one of the antenna means outputs and the receiver means.
Claim 13
Dependent Claim
47 words
The device of claim 1 wherein the television signals comprise a first signal having a plurality of channels, each channel having an assigned frequency bandwidth, and a second signal having a second plurality of channels, each of said second plurality of channels having an assigned frequency bandwidth.
Claim 14
Dependent Claim
41 words
The device of claim 12 wherein the first television signal is comprised of channels broadcast from a satellite and having a first polarity, and the second television signal is comprised of channels broadcast from a satellite and having a second polarity.
Claim 15
Dependent Claim
17 words
The device of claim 13 wherein the first polarity is vertical and the second polarity is horizontal.
Claim 16
Dependent Claim
118 words
A polarity switch adapted for connection between at least two satellite television antenna outputs and a satellite television receiver, each of said antenna outputs being associated with a television signal, the receiver having means to generate a logically encoded signal indicative of one of said antenna outputs and its associated television signal for processing by the receiver, the polarity switch comprising means to decode the receiver signal and produce a logic signal in response thereto, the logic signal being indicative of one of the antenna outputs, and means to electrically connect one of said antenna outputs to the receiver for transmission of its associated television signal to the receiver for processing in response to the decoded receiver signal.
Claim 17
Dependent Claim
118 words
A polarity switch adapted for connection between at least two satellite television antenna outputs and a satellite television receiver, each of said antenna outputs being associated with a television signal, the receiver having means to generate a logically encoded signal indicative of one of said antenna outputs and its associated television signal for processing by the receiver, the polarity switch comprising means to decode the receiver signal and produce a logic signal in response thereto, the logic signal being indicative of one of the antenna outputs, and means to electrically connect one of said antenna outputs to the receiver for transmission of its associated television signal to the receiver for processing in response to the decoded receiver signal.
Claim 18
Dependent Claim
51 words
The switch of claim 15 further comprising a logic means connected to the decoding means, the logic means having means to produce a switching signal in response to the logic signal, and an electronic switching circuit means connected to the logic means and interconnected between the antenna outputs and the receiver.
Claim 19
Dependent Claim
17 words
The switch of claim 16 wherein the electronic switching circuit means comprises a pin diode switch circuit.
Claim 20
Dependent Claim
25 words
The switch of claim 17 wherein the logic means includes means to amplify the logic signal and means to amplify and invert the logic signal.
Claim 21
Dependent Claim
23 words
The switch of claim 18 further comprising a DC power circuit connected between the receiver and at least one of the antenna outputs.
Claim 22
Dependent Claim
45 words
The switch of claim 19 wherein the decoding means includes a processing means for producing an intermediate signal corresponding to each receiver signal, the intermediate signals having a greater difference in their RMS values than the difference in the RMS values of the receiver signals.
Claim 23
Dependent Claim
31 words
The switch of claim 20 wherein the decoding means further comprises a comparator means for comparing the intermediate signal with a reference voltage and producing a logic signal in response thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |