Signal generator with adjustable frequency
First Claim
Patent Images
1. An apparatus for providing a signal, comprising:
- an oscillator circuit configured to provide an oscillating signal;
a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; and
a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude.
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Accused Products
Abstract
Frequency of an oscillating signal is temporarily adjusted to adjust frequency and/or phase of an output signal. For example, the frequency of the oscillating signal may be adjusted for a very short period of time to adjust the phase of the output signal. In addition, the frequency of the oscillating signal may be temporarily adjusted in a repeated manner to adjust the effective frequency of the output signal. In some aspects the frequency of the oscillating signal is adjusted by reconfiguration of reactive circuits associated with an oscillator circuit.
181 Citations
43 Claims
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1. An apparatus for providing a signal, comprising:
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an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; and a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for providing a signal, comprising:
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an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein; the reactive circuit is further configured to couple a first amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit if the control signal is at a first signal value; and the reactive circuit is further configured to couple a second amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit if the control signal is at a second signal value; and a control circuit configured to temporarily vary the control signal from the first signal value to the second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (13)
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14. A method of providing a signal, comprising:
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providing, by an oscillator circuit, an oscillating signal; coupling, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the coupling comprises; adjusting capacitance of a variable capacitive element based on the control signal; adjusting inductance of a variable inductive element based on the control signal;
oradjusting capacitance and inductance of variable capacitive and inductive elements based on the control signal; and temporarily varying the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of providing a signal, comprising:
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providing, by an oscillator circuit, an oscillating signal; coupling, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the coupling comprises; coupling a first amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit if the control signal is at a first signal value; and coupling a second amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit if the control signal is at a second signal value; and temporarily varying the control signal from the first signal value to the second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (26)
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27. An apparatus for providing a signal, comprising:
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means for providing an oscillating signal; means for coupling, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the means for providing, wherein the means for coupling comprises; a variable capacitive element for providing the variable amount of capacitance based on the control signal; a variable inductive element for providing the variable amount of inductance based on the control signal;
orvariable capacitive and inductive elements for providing the variable amounts of capacitance and inductance based on the control signal; and means for temporarily varying the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An apparatus for providing a signal comprising:
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means for providing an oscillating signal; means for coupling, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the means for providing, wherein the means for coupling; couples a first amount of capacitance, inductance, or capacitance and inductance to the means for providing if the control signal is at a first signal value; and couples a second amount of capacitance, inductance, or capacitance and inductance to the means for providing if the control signal is at a second signal value; and means for temporarily varying the control signal from the first signal value to the second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude. - View Dependent Claims (39)
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40. A computer-program product for providing a signal, comprising:
a non-transitory computer-readable storage medium storing codes of a computer program executable by at least one computer to; provide an oscillating signal; couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the coupling comprises; adjusting capacitance of a variable capacitive element based on the control signal; adjusting inductance of a variable inductive element based on the control signal;
oradjusting capacitance and inductance of variable capacitive and inductive elements based on the control signal; and temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude.
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41. A headset, comprising:
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an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude; and a transducer adapted to provide an audio output based on data that is provided through the use of the oscillating signal.
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42. A watch, comprising:
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an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude; and a user interface adapted to provide an indication based on data that is provided through the use of the oscillating signal.
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43. A sensing device for wireless communication, comprising:
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an oscillator circuit configured to provide an oscillating signal; a reactive circuit configured to couple, based on a control signal, a variable amount of capacitance, inductance, or capacitance and inductance to the oscillator circuit, wherein the reactive circuit comprises a variable capacitive element that provides the variable amount of capacitance based on the control signal, a variable inductive element that provides the variable amount of inductance based on the control signal, or variable capacitive and inductive elements that provide the variable amounts of capacitance and inductance based on the control signal; a control circuit configured to temporarily vary the control signal from a first signal value to a second signal value to cause a temporary change in a frequency of the oscillating signal within a period of the oscillating signal to skew a phase of the oscillating signal by a defined magnitude; and a sensor adapted to provide data to be transmitted through the use of the oscillating signal.
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Specification