Digital signal processing methods, systems and computer program products that identify threshold positions and values

A motion detection system comprising:

• a motion sensor that is configured to generate an acceleration signal in response to motion thereof;
• and
• digital signal processing means comprising:
• means for sampling the acceleration signal and dividing the samples into windows;
• means for associating one of at least three values with a respective window based upon whether the samples in the window are relatively constant, incremental, or decremental, to thereby generate an approximation vector;
• means for determining locations of thresholds in the approximation vector to generate a threshold position vector that indicates the locations of thresholds in the approximation vector;
• and
• means for assigning threshold values to the threshold positions in the threshold position vector to thereby generate a set of threshold values.

A motion detection system comprising:

• a motion sensor that is configured to generate an acceleration signal in response to motion thereof;
• and
• a digital signal processor that is configured to:
• sample the acceleration signal and divide the samples into windows;
• associate one of at least three values with a respective window based upon whether the samples in the window are relatively constant, incremental, or decremental, to thereby generate an approximation vector;
• determine locations of thresholds in the approximation vector to generate a threshold position vector that indicates the locations of thresholds in the approximation vector;
• and
• assign threshold values to the threshold positions in the threshold position vector to thereby generate a set of threshold values.