Proximity switch assembly having haptic feedback and method

Patent metadata

Field	Value
Publication number	US-9654103-B2
Application number	US-201514661325-A
Country	US
Kind code	B2
Filing date	Mar 18, 2015
Priority date	Mar 18, 2015
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A proximity switch assembly and method for detecting activation of a proximity switch assembly and providing feedback is provided. The assembly includes a plurality of proximity switches each comprising a proximity sensor providing a sense activation field. The assembly also includes control circuitry processing a signal associated with the activation field of each proximity sensor and detecting a finger located between two proximity switches. The assembly further includes a feedback device generating a feedback when the finger is detected between the two proximity switches. In addition, the assembly may detect speed of movement of a finger interfacing with the proximity switches and vary the feedback based on the detected speed.

First claim

What is claimed is:

1. A proximity switch assembly comprising:
a plurality of proximity switches each comprising a proximity sensor providing a sense activation field;
control circuitry processing a signal associated with the sense activation field of each proximity sensor and detecting a finger transitioning between two proximity switches; and
a feedback device generating a tactile or audible feedback when the finger is detected transitioning from first to second proximity switches in a region therebetween without selecting the switches.

2. The proximity switch assembly of claim 1 , wherein the feedback device provides a tactile feedback.

3. The proximity switch assembly of claim 2 , wherein the feedback device comprises a vibratory mechanism.

4. The proximity switch assembly of claim 1 , wherein the feedback device generates at least one of a tactile feedback, an audible feedback, and a visual feedback.

5. The proximity switch assembly of claim 1 , wherein the plurality of proximity switches comprises the first proximity switch located adjacent to the second proximity switch, wherein the control circuitry detects when the finger transitions midway between the first and second proximity switches.

6. The proximity switch assembly of claim 1 , wherein the feedback device generates a first feedback when the finger is detected transitioning from the first proximity switch to the second proximity switch, and further generates a second feedback when the control circuitry detects an activation of one of the proximity switches.

7. The proximity switch assembly of claim 1 , wherein the control circuitry generates a feedback that varies as a function of speed of the finger moving across the plurality of proximity switches.

8. The proximity switch assembly of claim 1 , wherein the plurality of proximity switches are installed in a vehicle for use by a passenger of the vehicle.

9. The proximity switch assembly of claim 1 , wherein the plurality of proximity switches comprises a plurality of capacitive switches each comprising one or more capacitive sensors.

10. A proximity switch assembly comprising:
a plurality of proximity switches each comprising a proximity sensor providing a sense activation field;
control circuitry processing a signal associated with the sense activation field of each proximity sensor and detecting speed of a finger moving across the proximity switches; and
a feedback device generating a tactile or audible feedback when the finger is transitioning from first to second proximity switches in a region therebetween and that varies based on the detected speed of the finger moving across the proximity switches without selecting the switches.

11. The proximity switch assembly of claim 10 , wherein the control circuitry further detects a finger transitioning between two proximity switches and generates a feedback when the finger is detected transitioning midway from a first proximity switch to a second proximity switch.

12. A method of providing feedback for a proximity switch assembly comprising:
generating a plurality of sense activation fields with a plurality of proximity sensors associated with a plurality of proximity switches;
detecting a finger transitioning from a first proximity switch to a second proximity switch; and
generating a tactile or audible feedback when the finger is detected transitioning from first to second proximity switches in a region therebetween without selecting the switches.

13. The method of claim 12 , wherein the feedback comprises a tactile feedback.

14. The method of claim 13 , wherein the tactile feedback is generated by a vibratory mechanism.

15. The method of claim 12 , wherein the feedback device generates at least one of a tactile feedback, an audible tone feedback and a visual feedback.

16. The method of claim 12 , wherein the feedback comprises a first feedback generated when the finger is transitioning from the first proximity switch to the second proximity switch, and further comprises a second feedback when activation of one of the proximity switches is detected.

17. The method of claim 12 further comprising the step of detecting speed of movement of the finger across the plurality of proximity switches and varying the feedback as a function of the detected speed.

18. The method of claim 12 , wherein the proximity switch assembly is installed on a vehicle for use by a passenger in the vehicle.

19. The method of claim 12 , wherein the proximity switch assembly comprises a capacitive switch comprising one or more capacitive sensors.

20. A method of providing feedback for a proximity switch assembly comprising:
generating a plurality of sense activation fields with a plurality of proximity sensors associated with a plurality of proximity switches;
detecting speed of movement of a finger moving across the proximity switches; and
generating a tactile or audible feedback when the finger is transitioning from first to second proximity switches in a region therebetween and that varies based on the detected speed of the finger moving across the proximity switches without selecting the switches.

Assignees

• Ford Global Tech Llc

Inventors

• Buttolo Pietro
• Salter Stuart C
• Rankin Ii James Stewart
• Ghosh Dipanjan

Classifications

• H03K17/955 Primary

  using a capacitive detector · CPC title

• H03K17/9622 Primary

  using a plurality of detectors, e.g. keyboard · CPC title

• H03K17/96

  Touch switches (specially adapted for electronic time-pieces with no moving parts G04G21/08) · CPC title

• H03K2217/96

  Touch switches · CPC title

• G06F3/016 Primary

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title