Method and system for measuring motion

• US 8,565,487 B2
• Filed: 02/06/2008
• Issued: 10/22/2013
• Est. Priority Date: 02/06/2008
• Status: Active Grant

• Current Assignee: Meditouch Limited
• Original Assignee: Meditouch Limited
• Inventors: Kuniz, Ziv, Ein-Zvi, Giora, Feazadeh, Avraham, Haridim, Motti
• Primary Examiner(s): Liew, Alex
• Application Number:
  US12/026,636
• Publication Number:
  US 20090196463A1
• Time in Patent Office: 2,085 Days
• Field of Search: 382/103
• US Class Current: 382/106
• CPC Class Codes: G06F 3/014 Hand-worn input/output arrangements, e.g. data gloves

Abstract

A system for determining a kinetic parameter of an object, the system includes: (a) a target, that includes a calibration facilitating pattern and which is connected to the object, so that a movement of the target correlates with a movement of the object; (b) an optical source, which is adapted to illuminate the target; (c) an optical sensor, adapted to generate detection signals in response to light received from the target; and (d) a processor, adapted to determine a calibration parameter and the kinetic parameter in response to the detection signals and to detection signals reference information.

Claims

1. A system for determining a kinetic parameter of an object, the system comprises:

a target, that comprises a calibration facilitating pattern and which is coupled to the object, so that a movement of the target correlates with a movement of the object;

wherein the calibration facilitating pattern comprises multiple differently colored segments that are delimited by boundaries;

an optical source, which is adapted to illuminate the target;

an optical sensor, adapted to generate detection signals in response to light received from the target;

wherein the detection signals form images of the target; and

a processor, adapted to determine a calibration parameter and the kinetic parameter in response to the detection signals that are indicative of a shift of at least one boundary between different images of the target and to detection signals reference information;

wherein the calibration parameter is a measure of an accumulative error which accrued during a span of a measurement of the kinetic parameter of the object.

2. The system according to claim 1, wherein the object is an organ of a subject and wherein the target is arranged to be move along a predefined course and wherein the target is coupled to organ to facilitate a conversion of a linear movement of the organ to a circular movement of the target about an axis of the target.

3. The system according to claim 1, wherein the multiple differently colored segments are of different dimensions, and wherein a determining of the processor is responsive to the dimensions of the differently colored segments.

4. The system according to claim 1, wherein the differently color segments differ from each other by amount of light they reflect.

5. The system according to claim 1, comprising multiple targets, each target being a retractable rotatable drum wherein the multiple targets are coupled to multiple organs of a subject.

6. The system according to claim 1, comprising multiple targets, each target being a sliding target arranged to slide along a linear track.

7. The system according to claim 1, further comprising a retractor, which is adapted to retract the target.

8. The system according to claim 1, comprising multiple targets that are coupled to organs of a person and wherein the processor is arranged to track tremors of the person.

9. The system according to claim 1, comprising multiple targets that are arranged to be coupled to multiple fingers of a person and wherein the multiple targets are arranged to rotate about their axes in response to a linear or circular movement of at least one of the multiple fingers.

10. The system according to claim 1, wherein the target is adapted to be rotated continuously and facilitate a measurement of a motion of the object over distance that exceeds a size of the target.

11. The system according to claim 1, comprising multiple targets, each target is arranged to rotate about an axis of the target in response to a linear movement of a finger of a subject;

wherein the multiple targets are located within a housing that is coupled to a glove and wherein the multiple targets are coupled to fingers of the subject via mechanical connections positioned within mechanical connection trails of the glove.