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US 6,473,483 B2Granted
Pedometer
OwnerNathan Pylesinventor
Life of this patent
Estimating the term…
Abstract
The pedometer having improved accuracy by being calibrated to actual user stride lengths and stride rates, and being recalibrated as necessary based on subsequent actual stride rates and lengths. The pedometer can also interact with a heart monitoring device.
Claims19
A pedometer comprising:
- a data processor programmed to create an initial calibration table of initial stride rates and lengths to be compared to an actual stride rate for deriving a corresponding actual stride length;
- obtain a recalibration stride rate over a known distance traveled;
- determine a calculated distance traveled using the initial calibration table and the recalibration stride rate;
- compare the calculated distance traveled with the known distance traveled to determine the difference, if any, between the two;
- and
- replace an initial stride length with a revised stride length that is a function of the initial stride length and the recalibration stride length.
3 more elements
A pedometer data processor programmed to:
- create an initial recalibration table of initial stride rates and lengths for comparison with an actual stride rate for deriving a corresponding actual stride length and distance traveled;
- calculate a recalibration stride length corresponding to a known stride rate over a known distance traveled;
- determine a calculated distance traveled using the initial calibration table and the known stride rate;
- compare the calculated distance traveled with the known distance traveled to determine a difference between the two;
- and
- adjust the initial calibration table with a revised stride length that is a function of the initial stride length and the known stride length.
3 more elements
A pedometer comprising:
- a step counter;
- a transmitter in communication with the step counter to generate a step count signal corresponding to each step and transmit the step count signal;
- a receiver mountable on a user body portion to receive the step count signal transmitted from the transmitter and calculate a distance from a number of steps counted by the step counter;
- and
- a data processor programmed to calculate a distance traveled by multiplying a number of steps counted by a stride length that varies according to a rate at which steps are taken, and further programmed to derive an actual stride length from a range of stride lengths calculated from a range of corresponding stride rates, the range of stride rates and stride lengths being derived from predetermined empirical data.
2 more elements
Dependencies are inferred from the claim text.