Method and device for recognizing a waveform of an analog signal
AssigneeMustek Systems Inc.
InventorChin-Chin Fan
Life of this patent
Estimating the term…
Abstract
A method and device for recognizing a waveform of an analog signal into a binary digital signal is developed. The method includes a) inputting the analog signal, b) determining voltage values of every peak and every valley of the analog signal respectively, c) determining a plurality of threshold voltages for the analog signal such that each the threshold voltage corresponds to mutually adjacent peak and valley and two adjacent respective the threshold voltages have a corresponding common one of the respective peak and the respective valley, and d) comparing each point of the waveform of the analog signal with the corresponding threshold voltage respectively for obtaining the digital signal. A real time device with a simple circuit is also available.
Claims22
A method for recognizing a waveform of an analog signal having a plurality of peaks and valleys while converting said analog signal into a digital signal, said method comprising:
- a) inputting said analog signal;
- b) determining voltage values of every peak and every valley of said analog signal respectively;
- c) determining a plurality of threshold voltages for said analog signal such that each said threshold voltage corresponds to mutually adjacent peak and valley and two adjacent respective said threshold voltages have a corresponding common one of said respective peak and said respective valley;
- and
- d) comparing each point of said waveform of said analog signal with said corresponding threshold voltage respectively for obtaining said digital signal.
A waveform recognition device for an analog signal to be converted into a binary image digital signal, wherein said analog signal has a plurality of peaks and valleys, said device comprising:
- an A/D converting device for converting said analog signal into one of a digital form;
- a memory device for storing said digital form corresponding to said analog signal;
- a computing device for determining peak voltages for said peaks respectively and valley voltages for said valleys respectively, and for determining a plurality of threshold voltages for said analog signal such that each said threshold voltage corresponds to mutually adjacent peak and valley and two adjacent said threshold voltages have a corresponding common one of said respective peak and said respective valley;
- and
- a comparing device for comparing each point of said waveform of said analog signal with said threshold voltage to thus obtain said binary image digital signal.
Dependencies are inferred from the claim text.