초록 ▼

A system for synchronizing a second receive chain relative to a first receive chain in a multi-mode communication system. The system includes a first circuit that measures a first frequency associated with the first receive chain. A second circuit adjusts a second frequency associated with the secon

A system for synchronizing a second receive chain relative to a first receive chain in a multi-mode communication system. The system includes a first circuit that measures a first frequency associated with the first receive chain. A second circuit adjusts a second frequency associated with the second receive chain based on the first frequency and provides a desired second frequency to the second receive chain in response thereto. In a specific embodiment, the first circuit includes a first counter that receives a signal associated with an output of a first oscillator and provides a measurement of the first frequency in response thereto. The second circuit includes a frequency synthesizer for providing the desired second frequency in response to a frequency control or reference signal. Another circuit generates the control or reference signal based on a difference between the second frequency and the first frequency. A second counter receives a signal characterized by the second frequency and provides the second frequency in response thereto.

대표청구항 ▼

1. A system for synchronizing a second receive chain relative to a first receive chain in a multi-mode communication system comprising:first means for determining a first frequency associated with said first receive chain; a first frequency synthesizing means for producing a first signal having the

1. A system for synchronizing a second receive chain relative to a first receive chain in a multi-mode communication system comprising:first means for determining a first frequency associated with said first receive chain; a first frequency synthesizing means for producing a first signal having the first frequency; a second frequency synthesizing means for producing a second signal having a second frequency associated with the second receive chain; and second means for adjusting the second frequency by providing a frequency control signal for adjusting the second frequency to the second frequency synthesizing means, wherein the frequency control signal is based on a predetermined relationship between the first frequency and the second frequency.