PEDESTRIAN NAVIGATION SYSTEM AND METHOD
First Claim
1. A system useful for determining a momentary positions in a pedestrian navigation, said system comprising a sensor arrangement, said sensor arrangement comprising:
- a control unit, a first on-foot pedestrian navigation module and a second on-foot pedestrian navigation module;
each of the modules including;
a) —
a module controller,b) —
a communication unit for enabling said control unit to send and receive data to and fro said module, andc) at least a first sensor unit and a second sensor unit;
each sensor unit including;
(i) an up/down sensor adapted for sensing a state condition being an ‘
up’
condition or a ‘
down’
condition, wherein said state conditions associated with relative displacement of the module with respect to a surface;
(ii) a signal transmitter/receiver adapted for generating a propagating signal in response to an activation signal generated by said module controller;
said control unit is adapted for continuously;
1) receiving from said modules first data indicative of said state conditions;
2) determining a pedestrian motion model out of plurality of motion models based on at least said first data;
3) based on the so determined pedestrian motion model, selectively sending control signals to either or both of the communication units in said modules thereby triggering generation of activation signals and in response triggering the transmitter/receivers in said modules to generate propagation signals;
4) receiving from communication unit of at least one of said modules second data associated with receipt of said propagating signal by at least two other of the signal transmitter/receivers; and
5) using said second data to determine a momentary position of one or more of the modules.
1 Assignment
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Accused Products
Abstract
An on-foot pedestrian navigation module useful for pedestrian navigation when operated with at least a control unit and another on-foot pedestrian navigation module, comprising (a) at least a first sensor unit and a second sensor unit, wherein each sensor unit including an up/down sensor adapted for sensing an ‘up’ condition and a ‘down’ condition associated with relative displacement of the module with respect to a surface, and a signal transmitter/receiver adapted, in response to an activation signal coming from a module controller, for generating a propagating signal (b) a module controller for controlling the operation of the module in response to a control signal coming from the control unit and (c) a communication unit for enabling said module to communicate with said at least the control unit and other module, thereby facilitating collecting motion data at the control unit and integrating the motion data with motion data coming from the other module, the motion data being indicative of a condition of each up/down sensor and receipt of the propagating signal by at least two sensor units of said other module, and wherein the motion data is useful for determining a momentary position of the pedestrian'"'"'s foot during motion.
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Citations
47 Claims
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1. A system useful for determining a momentary positions in a pedestrian navigation, said system comprising a sensor arrangement, said sensor arrangement comprising:
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a control unit, a first on-foot pedestrian navigation module and a second on-foot pedestrian navigation module; each of the modules including; a) —
a module controller,b) —
a communication unit for enabling said control unit to send and receive data to and fro said module, andc) at least a first sensor unit and a second sensor unit; each sensor unit including; (i) an up/down sensor adapted for sensing a state condition being an ‘
up’
condition or a ‘
down’
condition, wherein said state conditions associated with relative displacement of the module with respect to a surface;(ii) a signal transmitter/receiver adapted for generating a propagating signal in response to an activation signal generated by said module controller; said control unit is adapted for continuously; 1) receiving from said modules first data indicative of said state conditions; 2) determining a pedestrian motion model out of plurality of motion models based on at least said first data; 3) based on the so determined pedestrian motion model, selectively sending control signals to either or both of the communication units in said modules thereby triggering generation of activation signals and in response triggering the transmitter/receivers in said modules to generate propagation signals; 4) receiving from communication unit of at least one of said modules second data associated with receipt of said propagating signal by at least two other of the signal transmitter/receivers; and 5) using said second data to determine a momentary position of one or more of the modules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 25, 26, 45, 46, 47)
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23-24. -24. (canceled)
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27. A method useful for pedestrian navigation, comprising:
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(a) associating at least three touch points with heel area and toes area of said pedestrian'"'"'s left foot and right foot; (b) collecting up/down information about a relative displacement of each of said touch points with respect to a surface; (c) based on said up/down information and in accordance with a predetermined pedestrian motion model and a predetermined transmission/receiving scheme, generating a propagating wave at least at one of said touch points; (d) collecting information of receipt of said propagating wave at least by part of said touch points, this information including Time-of-Arrival information; thereby enabling TOA (Time of Arrival) processing which is useful in determining DR (Dead-Reckoning) momentary positions of the pedestrian during motion. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 40, 41)
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38-39. -39. (canceled)
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42-44. -44. (canceled)
Specification