Digital sample rate conversion
AssigneeInfineon Technologies AG
InventorsThorsten Tracht, Guenther Hackl
Life of this patent
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Abstract
Embodiments of an apparatus for sample rate conversion are described. Various embodiments include an interpolator configured to interpolate a digital input data stream by using values of an interpolation phase shift control quantity to generate a digital output data stream, a computing stage configured to compute values of the interpolation phase shift control quantity, and an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
Claims26
An apparatus for sample rate conversion, comprising:
- an interpolator configured to interpolate a digital input data stream having a first sample rate using values of an interpolation phase shift control quantity to generate a digital output data stream having a second sample rate;
- a computing stage configured to compute values of the interpolation phase shift control quantity;
- and
- an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
A receiver, comprising:
- an apparatus for sample rate conversion, comprising:
- an interpolator configured to interpolate a digital input data stream having a first sample rate using values of an interpolation phase shift control quantity to generate a digital output data stream having a second sample rate;
- a computing stage configured to compute values of the interpolation phase shift control quantity;
- and
- an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
A transmitter, comprising:
- an apparatus for sample rate conversion, comprising:
- an interpolator configured to interpolate a digital input data stream having a first sample rate using values of an interpolation phase shift control quantity to generate a digital output data stream having a second sample rate;
- a computing stage configured to compute values of the interpolation phase shift control quantity, and
- an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
A method for sample rate conversion, comprising:
- receiving a digital input data stream having a first sample rate;
- computing values of an interpolation phase shift control quantity;
- generating a digital output data stream having a second sample rate by interpolating the digital input data stream using the values of the interpolation phase shift control quantity;
- disabling the generation of the digital output data stream while continuing to compute updated values of the phase shift control quantity;
- and
- enabling the disabled generation of the digital output data stream using the updated values of the interpolation phase shift control quantity.
A method for processing an input data stream in a receiver or transmitter, comprising;
- receiving a digital input data stream having a first sample rate;
- computing values of an interpolation phase shift control quantity;
- generating a digital output data stream having a second sample rate by interpolating the digital input data stream using the values of the interpolation phase shift control quantity;
- disabling the generation of the digital output data stream while continuing to compute values of phase shift control quantity;
- and thereafter
- enabling the generation of the digital output data stream using the updated values of the interpolation phase shift control quantity.
Dependencies are inferred from the claim text.