Patent US3102773A successfully refreshed from Google Patents.
US3671872A
Expired / Lapsed
US
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High frequency multiple phase signal generator
Assignee: Telemation Inc
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Filing: 1971-03-26
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Granted: 1972-06-20
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Expires: 1991-03-26
Abstract
Abstract A high frequency phase generator comprising an oscillator, operating at eight times the desired frequency. A first set of flip-flop circuits divides the frequency down to the desired frequency. A second set of flip-flop circuits is provided with clock signals at the oscillator frequency and is connected so that the first flip-flop circuit of the second set is fed by the output of the first set and each subsequent flip-flop circuit in the second set is fed by the output of the preceding flip-flop circuit. Due to timing differences resulting from the two different frequencies, each flip-flop circuit in the second set produces two outputs which are 180* out of phase with each other and 45* out of phase with the outputs of the adjacent flip-flop circuits.
Inventors
- 👤 Donald E Pauly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:09
CPC Classifications
H; H03; H03B; H03B27/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
220 words
A phase generator comprising: an oscillator having means generating a single continuous pulse train of relatively high frequency, the period of which is no greater than the desired spacing between adjacent output phases to be produced; a first set of frequency dividers arranged in tandem and serially connected one to the next, and a second set of frequency dividers arranged in tandem and serially connected one to the next and comprising in combination a shift register, each frequency divider of the second set having at least two outputs; means directly communicating said single continuous pulse train as input to the first frequency divider of the first set of dividers and as input to each of the frequency dividers of the second set of dividers; means communicating the divided down output from the last frequency divider of the first set as input to the first frequency divider of the second set causing said output to enable the first frequency divider of the second set and the oscillator pulse train causes said first frequency divider to fire, which enables a second frequency divider of the second set, whereby the two outputs of each frequency divider of the second set are of opposite phase and the corresponding outputs of each successive frequency divider of the second set are of uniform phase difference, respectively.
Claim 2
Dependent Claim
220 words
A phase generator comprising: an oscillator having means generating a single continuous pulse train of relatively high frequency, the period of which is no greater than the desired spacing between adjacent output phases to be produced; a first set of frequency dividers arranged in tandem and serially connected one to the next, and a second set of frequency dividers arranged in tandem and serially connected one to the next and comprising in combination a shift register, each frequency divider of the second set having at least two outputs; means directly communicating said single continuous pulse train as input to the first frequency divider of the first set of dividers and as input to each of the frequency dividers of the second set of dividers; means communicating the divided down output from the last frequency divider of the first set as input to the first frequency divider of the second set causing said output to enable the first frequency divider of the second set and the oscillator pulse train causes said first frequency divider to fire, which enables a second frequency divider of the second set, whereby the two outputs of each frequency divider of the second set are of opposite phase and the corresponding outputs of each successive frequency divider of the second set are of uniform phase difference, respectively.
Claim 3
Dependent Claim
170 words
A phase generator comprising: an oscillator operating at a frequency having a period no greater than the desired spacing between adjacent output phases to be produced; a first combination of circuits comprising first, second and third flip-flop circuits; means connecting said first flip-flop circuit to be driven by said oscillator and causing said first flip-flop circuit to provide a first signal at half the frequency of said oscillator; means connecting said second and third flip-flop circuits to form a ring counter driven by the signal from said first flip-flop circuit and to provide an output signal having a frequency which is one-fourth the frequency of said first signal; and a second combination of circuits comprising additional flip-flop circuits connected to receive signals from said second and third flip-flop circuits and clocked by the signals from said oscillator and each serving to pass output signals at intervals determined by a transition of the signals from said oscillator subsequent to a transition of the signals from said second and third flip-flop circuits.
Claim 4
Dependent Claim
170 words
A phase generator comprising: an oscillator operating at a frequency having a period no greater than the desired spacing between adjacent output phases to be produced; a first combination of circuits comprising first, second and third flip-flop circuits; means connecting said first flip-flop circuit to be driven by said oscillator and causing said first flip-flop circuit to provide a first signal at half the frequency of said oscillator; means connecting said second and third flip-flop circuits to form a ring counter driven by the signal from said first flip-flop circuit and to provide an output signal having a frequency which is one-fourth the frequency of said first signal; and a second combination of circuits comprising additional flip-flop circuits connected to receive signals from said second and third flip-flop circuits and clocked by the signals from said oscillator and each serving to pass output signals at intervals determined by a transition of the signals from said oscillator subsequent to a transition of the signals from said second and third flip-flop circuits.
Claim 5
Dependent Claim
74 words
The device of claim 2 wherein: said second plurality of flip-flop circuits comprises five flip-flop circuits; means connecting the first of said five flip-flop circuits to be driven by the output signal from said first plurality of flip-flop circuits; means connecting each of the other of said five flip-flop circuits to be driven by the preceeding flip-flop circuit; and means connecting said oscillator to supply clock pulses to each of said five flip-flop circuits.
Claim 6
Dependent Claim
36 words
The device of claim 3 further comprising: dummy load means connected to be fed by the last of said five flip-flop circuits to simulate the load of another flip-flop circuit driven by said last flip-flop circuit.
Claim 7
Independent Claim
84 words
The method of generating a plurality of high frequency signals of different phases, said method comprising the steps of: generating a first signal at a frequency having a period no greater than the desired spacing between adjacent output phases to be produced; dividing said first signal to provide a second signal at the desired frequency; and passing output signals at the frequency of said first sigNal at intervals determined by a transition of said first signal subsequent to a transition of said second signal.
Claim 8
Independent Claim
84 words
The method of generating a plurality of high frequency signals of different phases, said method comprising the steps of: generating a first signal at a frequency having a period no greater than the desired spacing between adjacent output phases to be produced; dividing said first signal to provide a second signal at the desired frequency; and passing output signals at the frequency of said first sigNal at intervals determined by a transition of said first signal subsequent to a transition of said second signal.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |