Application-specific integrated circuit with integrated difference filter
AssigneeQorvo US, Inc.
InventorShaoyun Wang
Life of this patent
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Abstract
Disclosed is an integrated circuit having a sensor configured to sense a stimulus and in response to output an analog signal, and an analog-to-digital converter configured to receive the analog signal and to output a stream of digital values that are in proportion to the analog signal. A difference filter is configured to receive the digital values and to subtract an N number of the digital values from an M number of the digital values to generate filtered values, wherein M and N are counting numbers.
Claims22
An integrated circuit comprising:
- a sensor configured to sense a stimulus and in response to output an analog signal;
- an analog-to-digital converter configured to receive the analog signal and to output a stream of digital values that are in proportion to the analog signal;
- and
- a difference filter configured to receive the digital values and subtract an N number of the digital values from an M number of the digital values to generate filtered values, wherein M and N are counting numbers.
A method of operating an integrated circuit comprising a sensor configured to sense a stimulus and in response to output an analog signal, an analog-to-digital converter configured to receive the analog signal and to output a stream of digital values that are in proportion to the analog signal, and a difference filter configured to process the digital values with the method comprising subtracting an N number of the digital values from an M number of the digital values to generate filtered values, wherein M and N are counting numbers.
A wireless communication device comprising:
- receive circuitry configured to receive radio frequency (RF) signals;
- a baseband processor configured to process a digitized version of the RF signals received by the receive circuitry and to extract the information or data bits conveyed in the received RF signals;
- transmit circuitry configured to receive encoded data from the baseband processor and to modulate a carrier signal with the encoded data;
- and
- user interface circuitry configured to communicate user input to the baseband processor, the user interface circuitry comprising:
- a sensor configured to sense a stimulus and in response to output an analog signal;
- an analog-to-digital converter configured to receive the analog signal and to output a stream of digital values that are in proportion to the analog signal;
- and
- a difference filter configured to receive the digital values and to subtract an N number of the digital values from an M number of the digital values to generate filtered values, wherein M and N are counting numbers.
Dependencies are inferred from the claim text.