Patent US3768018A successfully refreshed from Google Patents.
US3768018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitter-receiver alignment system and method
Assignee: Philips North America LLC
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Filing: 1972-03-30
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Granted: 1973-10-23
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Expires: 1992-03-30
Abstract
Abstract An alignment system to align the frequencies of a transmitter and receiver is disclosed. The modulation frequency of the transmitter is tunable and may be aligned to that of the receiver by radiating a signal into an unenergized receiver. Induction coupling between the transmitter and receiver establishes transfer of energy into the modulation frequency circuits of the receiver. An alignment indicator which includes an amplifier and an output indicator lamp may be plugged into the test point jack of the receiver. The alignment indicator accordingly amplifies the modulation frequency signal in the receiver and the lamp glows most brightly when the transmitter and receiver are correctly aligned.
Inventors
- 👤 A Deming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:05
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/12; H03J3/14
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
177 words
A transmitter-receiver alignment system, comprising in combination, a transmitter capable of transmitting a given carrier frequency, a receiver capable of receiving said given carrier frequency, one of said transmitter and receiver having tunable frequency circuit components, a connection on said receiver near the output thereof to have available thereat one of the carrier and modulation frequencies of the particular circuit components therein, an alignment indicator including an amplifier for alternating voltages and an output indicator means, means connecting the input of said alignment indicator amplifier to said receiver connection, means establishing radiation coupling between said transmitter and receiver, means supplying operating voltages to said transmitter and alignment indicator to establish in the circuit components of the receiver a signal from the transmitter to condition the receiver for an output at said connection, and means for tuning the frequency of the circuit components of one of said transmitter and receiver until the alignment indicator output means indicates that the transmitter is transmitting to the receiver a frequency corresponding to the tuning of the circuit components within said receiver.
Claim 2
Dependent Claim
177 words
A transmitter-receiver alignment system, comprising in combination, a transmitter capable of transmitting a given carrier frequency, a receiver capable of receiving said given carrier frequency, one of said transmitter and receiver having tunable frequency circuit components, a connection on said receiver near the output thereof to have available thereat one of the carrier and modulation frequencies of the particular circuit components therein, an alignment indicator including an amplifier for alternating voltages and an output indicator means, means connecting the input of said alignment indicator amplifier to said receiver connection, means establishing radiation coupling between said transmitter and receiver, means supplying operating voltages to said transmitter and alignment indicator to establish in the circuit components of the receiver a signal from the transmitter to condition the receiver for an output at said connection, and means for tuning the frequency of the circuit components of one of said transmitter and receiver until the alignment indicator output means indicates that the transmitter is transmitting to the receiver a frequency corresponding to the tuning of the circuit components within said receiver.
Claim 3
Dependent Claim
46 words
An alignment system as set forth in claim 1, including modulation frequency circuit components within each of said transmitter and receiver, and means for tuning the frequency of one of the modulation frequency circuit components until the modulation frequencies are aligned in the transmitter and receiver.
Claim 4
Dependent Claim
41 words
An alignment system as set forth in claim 2, wherein said coupling establishing means is accomplished by physically placing the transmitter and receiver in proximity to each other to have the modulation frequency components of the transmitter and receiver inductively coupled.
Claim 5
Dependent Claim
41 words
An alignment system as set forth in claim 1, wherein said coupling establishing means is accomplished by physically placing the transmitter and receiver in proximity to each other to have the tunable circuit components of the transmitter and receiver inductively coupled.
Claim 6
Dependent Claim
28 words
An alignment system as set forth in claim 1, wherein said frequency tuning means tunes the frequency of said transmitter to be equal to that of said receiver.
Claim 7
Dependent Claim
32 words
An alignment system as set forth in claim 1, wherein said receiver connection includes a test point jack connected in the receiver circuit and accessible on the outside of the receiver housing.
Claim 8
Dependent Claim
23 words
An alignment system as set forth in claim 6, wherein said input connecting means includes a plug receivable within said test point jack.
Claim 9
Dependent Claim
37 words
An alignment system as set forth in claim 7, wherein said alignment indicator is a unit separable from said receiver and is physically supported on said receiver by said plug being receivable within said test point jack.
Claim 10
Dependent Claim
29 words
An alignment system as set forth in claim 1, wherein said voltage supply means supplies operating voltages to said transmitter and said alignment indicator but not to the receiver.
Claim 11
Dependent Claim
30 words
An alignment system as set forth in claim 1, wherein said voltage supply means includes dry cell batteries in said transmitter and said alignment indicator but not in the receiver.
Claim 12
Dependent Claim
24 words
An alignment system as set forth in claim 1, including means continuously connecting said dry cell battery in the circuit of said alignment indicator.
Claim 13
Independent Claim
174 words
The method of using an alignment indicator having an amplifier and output indicator means to align to the same frequency a transmitter and a receiver, comprising the steps of, selecting a transmitter capable of transmitting a given carrier frequency, selecting a receiver capable of receiving said given carrier frequency, providing a connection on said receiver near the output thereof to have available thereat one of the carrier and modulation frequencies of the particular circuit components therein, connecting the input of said alignment indicator amplifier to said receiver connection, coupling for radiation of frequencies between said transmitter and receiver, supplying operating voltages to said transmitter and alignment indicator to establish in the circuit components of the receiver a signal from the transmitter to condition the receiver for an output at said connection, and tuning the frequency of the circuit components of one of said transmitter and receiver until the alignment indicator output means indicates thaT the transmitter is transmitting to the receiver a frequency corresponding to the tuning of the circuit components within said receiver.
Claim 14
Independent Claim
174 words
The method of using an alignment indicator having an amplifier and output indicator means to align to the same frequency a transmitter and a receiver, comprising the steps of, selecting a transmitter capable of transmitting a given carrier frequency, selecting a receiver capable of receiving said given carrier frequency, providing a connection on said receiver near the output thereof to have available thereat one of the carrier and modulation frequencies of the particular circuit components therein, connecting the input of said alignment indicator amplifier to said receiver connection, coupling for radiation of frequencies between said transmitter and receiver, supplying operating voltages to said transmitter and alignment indicator to establish in the circuit components of the receiver a signal from the transmitter to condition the receiver for an output at said connection, and tuning the frequency of the circuit components of one of said transmitter and receiver until the alignment indicator output means indicates thaT the transmitter is transmitting to the receiver a frequency corresponding to the tuning of the circuit components within said receiver.
Claim 15
Dependent Claim
28 words
The method as set forth in claim 12, including tuning the modulation frequency circuit components of one of the transmitter and receiver until the modulation frequencies are aligned.
Claim 16
Dependent Claim
32 words
The method as set forth in claim 12, including tuning the circuit components of the transmitter until the radiated frequency is aligned with the tuning of the circuit components of the receiver.
Claim 17
Dependent Claim
17 words
The method as set forth in claim 14, including tuning the modulation frequency components of the transmitter.
Claim 18
Dependent Claim
24 words
The method as set forth in claim 12, wherein said connecting of the amplifier input includes physically supporting the alignment indicator on the receiver.
Claim 19
Dependent Claim
31 words
The method as set forth in claim 12, including providing a coaxial separable connector between the alignment indicator amplifier and the receiver to physically support the alignment indicator on the receiver.
Claim 20
Dependent Claim
36 words
The method as set forth in claim 12, including providing an indicator lamp on the alignment indicator as the indicator means, the brilliance of which indicates the degree of closeness of tuning of the circuit components.
Claim 21
Dependent Claim
27 words
The method as set forth in claim 12, including connecting a dry cell battery in said alignment indicator and in said transmitter as the operating voltage supply.
Claim 22
Dependent Claim
25 words
The method as set forth in claim 19, including maintaining the receiver in an unenergized condition to avoid passing spurious frequencies to the alignment indicator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |