METHOD AND ALGORITHM FOR DETECTING MOVEMENT OF AN OBJECT

• US 20080266083A1
• Filed: 11/09/2007
• Published: 10/30/2008
• Est. Priority Date: 04/30/2007
• Status: Abandoned Application

• Current Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Inventors: Stala, Michal, Midholt, Magnus
• Application Number:
  US11/937,678
• Publication Number:
  US 20080266083A1
• Time in Patent Office: Days
• US Class Current: 340/540
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042

Abstract

A system, method and computer application for electronic device 10 for detecting movement near an electronic device. The electronic device includes movement detection circuitry configured to detect movement of an object near the movement detection circuitry. The movement detection circuitry includes at least one sensor that detects movement and generates at least one output signal corresponding to a position of the object detected. The electronic device further includes a memory for storing one or more predefined state parameters that correspond to one or more predefined movements to be detected by the movement detection circuitry. During processing, the output signals of the sensors are processed by averaging signals received from the one or more sensors to determine vertical movement above the movement detection circuitry and a determination is made as to whether the output signals of the one or more sensors are active or inactive to determine horizontal movement across the movement detection circuitry.

Claims

1. A method for detecting movement near an electronic device, the method comprising:

providing an electronic device having movement detection circuitry for detecting contactless movement of an object near the electronic device, wherein the device includes a memory for storing one or more predefined state parameters that correspond to one or more predefined movements to be detected by the movement detection circuitry;

detecting movement of an object near the movement detection circuitry;

generating detected state information, wherein the detected state information corresponds at least in part to the detected movement of the object;

comparing the one or more predefined state parameters with the detected state information; and

generating a signal to control one or more user selectable operations of the electronic device based at least in part on the detected movement of the object.

2. The method of claim 1, wherein the movement detection circuitry includes a plurality of detectors.

3. The method of claim 2, wherein the detectors are infrared sensors.

4. The method of claim 2 further including storing the one or more predefined state parameters in a state vector, wherein the predefined state parameters correspond to an output signal associated with at least one of the plurality of detectors.

5. The method of claim 4, wherein the state vector corresponds to one or more desired outputs of each of the plurality of detectors.

6. The method of claim 5 further including iteratively comparing the one or more predefined state parameters to the detected state information to determine if a match exists between the predefined state parameters and the detected state parameters.

7. The method of claim 6, wherein the detected state information is processed in a first manner to determine vertical movement above the plurality of detectors and in a second manner to determine horizontal movement across the plurality of detectors.

8. The method of claim 7, wherein each of the plurality of sensors are processed as either being active or inactive to determine horizontal movement of the object.

9. The method of claim 8, wherein each of the plurality of sensors are averaged to determine vertical movement of the object.

10. The method of claim 5 further including determining an elapsed time associated with detecting the match.

11. The method of claim 10, wherein if the elapsed time is below a threshold time value a first signal is generated and if the elapsed time is above the threshold time value a second signal is generated.

12. The method of claim 1, wherein the one or more user selectable operations consists of at least one selected from the group consisting of:

altering audio from a speaker;

altering audio output from a ringer or altering audio output from an alarm.

13. An electronic device comprising:

movement detection circuitry configured to detect movement of an object near the movement detection circuitry, wherein the movement detection circuitry includes at least one sensor and generates at least one output signal corresponding to a position of the object detected;

a memory for storing one or more predefined state parameters that correspond to one or more predefined movements to be detected by the movement detection circuitry; and

a processor coupled to the memory and the movement detection circuitry, wherein the processor receives one or more signals from the movement detection circuitry and processes the one or more signals according to a movement detection algorithm to detect the one or more predefined movements to control one more operations of the electronic device.

14. The electronic device of claim 13, wherein the at least one sensor is an image sensor.

15. The electronic device of claim 14, wherein the at least one sensor is a camera.

16. The electronic device of claim 13, wherein the movement detection circuitry includes a plurality of sensors.

17. The electronic device of claim 16, wherein the plurality of sensors are infrared sensors.

18. The electronic device of claim 13, wherein the one or more predefined state parameters are stored in a state vector, wherein the predefined state parameters correspond to an output signal associated with at least one of the plurality of detectors.

19. The electronic device of claim 18, wherein the movement detection algorithm iteratively compares the one or more predefined state parameters to the detected state information to determine if a match exists between the predefined state parameters and the detected state parameters.

20. The electronic device of claim 19, wherein the movement detection algorithm processes detected state information in a first manner to determine vertical movement above the plurality of detectors and in a second manner to determine horizontal movement across the plurality of detectors.

21. The electronic device of claim 20, wherein the plurality of sensors are processed as either being active or inactive to determine horizontal movement of the object.

22. The electronic device of claim 20, wherein the plurality of sensors are averaged to determine vertical movement of the object.

23. The electronic device of claim 20, wherein the movement detection algorithm compares the one or more output signals from the movement detection circuitry at a first time period and the at least one output signal from the movement detection circuitry at a second time period to determine the match.

24. A computer program stored on a machine readable medium in an electronic device, the program being suitable for detecting movement of an object near the electronic device, wherein

when the computer program is loaded in memory of the electronic device and executed, causes one or more predefined state parameters to be stored in memory and movement detection circuitry having a plurality of sensors to generate detected state information associated with movement of the object near the movement detection circuitry and comparing the one or more predefined state parameters with the detected state information, wherein, comparing the one or more predefined state parameters iteratively to the detected state information to determine if a match exists between the predefined state parameters and the detected state parameters, wherein the detected state information is processed by averaging signals received from the plurality of sensors to determine vertical movement above the plurality of detectors and by determining if the signals received from the plurality of sensors are active or inactive to determine horizontal movement across the plurality of detectors;

and generating a signal to control one or more user selectable operations of the electronic device based at least in part on the detected movement of the object.