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US 7,689,190 B2Granted
Controlling the frequency of an oscillator
AssigneeST-Ericsson SA
InventorsDonald A. Kerth, James P. Maligeorgos, Dylan A. Hester, Lysander Lim, Augusto M. Marques, G. Tyson Tuttle
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Abstract
A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.
Claims32
A method comprising:
- providing an oscillator;
- generating an analog input signal to control a frequency of the oscillator;
- generating a digital input signal to control the frequency of the oscillator;
- converting the analog signal into a digital signal;
- selecting one of the digital input signal and the digital signal;
- and
- controlling the frequency of the oscillator in response to the selected one of the digital input signal and the digital signal.
4 more elements
An apparatus comprising:
- a first interface to receive a digital input signal indicative of a frequency for an oscillator;
- a second interface to receive an analog input signal indicative of a frequency for the oscillator;
- an analog-to-digital converter to convert the analog input signal into a digital signal;
- circuitry to select one of the digital input signal and the digital signal;
- and
- a circuit to control the frequency of the oscillator in response to the selected one of the digital input signal and the digital signal.
3 more elements
A system comprising:
- an oscillator;
- a first interface to receive a digital input signal indicative of a frequency for the oscillator;
- a second interface to receive an analog input signal indicative of a frequency for the oscillator;
- an analog-to-digital converter to convert the analog input signal into a digital signal;
- circuitry to select one of the digital input signal and the digital signal;
- and
- a circuit to control the frequency of the oscillator in response to the selected one of the digital input signal and the digital signal.
4 more elements
A wireless system comprising:
- a transceiver including:
- an oscillator;
- a first interface to receive a digital input signal indicative of a frequency for the oscillator;
- a second interface to receive an analog input signal indicative of a frequency for the oscillator;
- an analog-to-digital converter to convert the analog input signal into a digital signal;
- circuitry to select one of the digital input signal and the digital signal;
- and
- a circuit to control the frequency of the oscillator in response to the selected one of the digital input signal and the digital signal;
- and
- a processor to provide the digital input signal and the analog input signal to the transceiver.
7 more elements
A transceiver comprising:
- an oscillator;
- a first external interface to receive a digital input signal indicative of a frequency for the oscillator;
- a second external interface to receive an analog input signal indicative of the frequency for the oscillator;
- an analog-to-digital converter to convert the analog input signal into a digital signal;
- circuitry to select one of the digital input signal and the digital signal;
- and
- a circuit to control the frequency of the oscillator in response to the selected one of the digital input signal and the digital signal.
4 more elements
Dependencies are inferred from the claim text.