US3769597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parametric device for multiplying frequencies
Assignee: Individual
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Filing: 1972-01-21
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Granted: 1973-10-30
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Expires: 1992-01-21
Abstract
Abstract The present invention relates to a device energized by two input frequencies which furnishes at the output a frequency whose numeric value is equal to the product of the numeric values of the input frequencies. It works by cooperation between a phase discriminator, a VCO-type oscillator and a variable-sequence divider which is automatically set in accordance with the state of an electronic counter which is excited by one of the two frequencies. This counter which is synchronized with a time base operates like an electronic frequency-meter adjusting the variable-sequence divider at the end of each counting interval. The basic multiplier circuit is also used to provide modified embodiments, one of which produces the square of an input frequency, another the inverse of an input frequency, the third the square root of an input frequency. Different applications of these circuits are presented for different problems of measuring physical quantities.
Inventors
- 👤 F Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:31
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/18; H03L7/197; G; G01; G01G; G01G19/00; G01G19/40; G01G19/413; G01G19/414; G06; G06F; G06F7/00; G06F7/60; G06F7/68; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/161
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A device for the parametric multiplication of frequencies providing an output frequency having a numeric value equal to the product of the numeric values of the input frequencies, comprising a phase discriminator having first and second inputs, said first input receiving a first frequency signal, a voltagecontrolled oscillator having its input connected to the output of said phase discriminator, a variable divider connecting the output of said voltage-controlled oscillator to the second input of said phase discriminator, and control means for controlling the division factor of said variable divider including a time base providing timing signals and counting means for counting in response to a second frequency signal during intervals controlled by said time base.
Claim 2
Independent Claim
115 words
A device for the parametric multiplication of frequencies providing an output frequency having a numeric value equal to the product of the numeric values of the input frequencies, comprising a phase discriminator having first and second inputs, said first input receiving a first frequency signal, a voltagecontrolled oscillator having its input connected to the output of said phase discriminator, a variable divider connecting the output of said voltage-controlled oscillator to the second input of said phase discriminator, and control means for controlling the division factor of said variable divider including a time base providing timing signals and counting means for counting in response to a second frequency signal during intervals controlled by said time base.
Claim 3
Dependent Claim
74 words
A device for the parametric multiplication of frequencies as defined in claim 1 wherein said counting means includes an electronic counter which is reset at intervals determined by said time base, said electronic counter receiving at the input thereof said second frequency signal, storage means for storing the value of the count at the end of each counting interval of said electronic counter, and means for transferring said count value to said variable divider.
Claim 4
Dependent Claim
32 words
A device for the parametric multiplication of frequencies as defined in claim 2 wherein said variable divider is a counter which is preset to the count value stored in said storage means.
Claim 5
Dependent Claim
36 words
A device for the parametric multiplication of frequencies as defined in claim 2 wherein said variable divider is a reverse counter which is preset to the complement of the count value stored in said storage means.
Claim 6
Dependent Claim
54 words
A device for the parametric multiplication of frequencies as defined in claim 1 wherein the first input of said phase discriminator is connected to the input of said counting means so that said first and second frequency signals are equal and the output frequency is equal to the square of said first input frequency.
Claim 7
Dependent Claim
95 words
A device for the parametric multiplication of frequencies as defined in claim 1, and further including means for providing a second output frequency which is the inverse of the frequency of said voltage-controlled oscillator comprising a second phase discriminator having one input connected to the output of said voltage-controlled oscillator, a fixed frequency oscillator connected to another input of said second phase discriminator and a second voltage-controlled oscillator connected to The output of said second phase discriminator, the output of said second voltage-controlled oscillator being connected to said counting means as said second frequency signal.
Claim 8
Dependent Claim
92 words
A device for the parametric multiplication of frequencies as defined in claim 5, and further including means for providing the square root of a third frequency signal in response to the output of said voltage-controlled oscillator comprising a second phase discriminator having a first input connected to the output of said voltage-controlled oscillator and a second input receiving said third frequency signal, and a second voltage-controlled oscillator having its input connected to the output of said second phase discriminator and its output connected to said counting means as said second frequency signal.
Claim 9
Dependent Claim
89 words
A device for the parametric multiplication of frequencies as defined in claim 1, and further including a first mixer having first and second inputs receiving respective parameter signals a second mixer having a first input receiving an additional parameter signal and a second input connected to the output of said first mixer, the output of said second mixer being connected to said first input of said phase discriminator as said first frequency signal, and means providing a further parameter signal to said counting means as said second frequency signal.
Claim 10
Dependent Claim
77 words
A device for the parametric multiplication of frequencies as defined in claim 5 further including force measuring means including at least one vibrating cord to which a force to be measured is applied and means for generating a measuring signal having a frequency proportional to the frequency of vibration of said cord which is proportional to the square root of the applied force, said measuring signal being applied to said first input of said phase discriminator means.
Claim 11
Dependent Claim
46 words
A device for the parametric multiplication of frequencies as defined in claim 5, further including a measuring oscillator including a capacitor having movable plates for adjusting the frequency of oscillation, the output of said measuring oscillator being connected to said first input of said phase discriminator.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |