Optical remote control system

• US 9,148,689 B2
• Filed: 04/11/2012
• Issued: 09/29/2015
• Est. Priority Date: 07/19/2011
• Status: Active Grant

• Current Assignee: PixArt Imaging Incorporated
• Original Assignee: PixArt Imaging Incorporated
• Inventors: Kao, Ming-Tsan, Huang, Chao-Chien, Liang, Chia-Cheun, Ko, Yi-Hsien
• Primary Examiner(s): Backer, Firmin
• Assistant Examiner(s): Wilson, Brian
• Application Number:
  US13/444,814
• Publication Number:
  US 20130021237A1
• Time in Patent Office: 1,266 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0325 using a plurality of light emitters or reflectors or a plurality of detectors forming a reference frame from which to derive the orientation of the object, e.g. by triangulation or on the basis of reference deformation in the picked up image
• CPC Class Codes: H04N 21/42221 Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
• CPC Class Codes: H04N 21/42222 Additional components integrated in the remote control device, e.g. timer, speaker, sensors for detecting position, direction or movement of the remote control, microphone or battery charging device

Abstract

An optical remote control system includes a home appliance and a remote controller. The home appliance operates according to a user command and its housing includes an opening. A status indicator light and a reference light are disposed within the opening. The status indicator light includes a visible light source, and the reference light includes a plurality of infrared light sources. The visible light source and the infrared light sources are disposed in a predetermined pattern. The remote controller includes an optical sensor configured to detect optical signals from the infrared light sources, thereby generating the user command accordingly.

Claims

1. An optical remote control system, comprising:

a home appliance configured to operate according to a user command and comprising;

a housing including;

a first opening; and

a second opening as a vent of a heat-dissipating device;

a status indicator light disposed in the first opening and including a first light source; and

a first reference light disposed in the first opening and including a second light source, wherein the first light source is a visible light source and the second light source is an infrared light source; and

a second reference light disposed within the housing at a location corresponding to the second opening and including a plurality of third light sources disposed in the second opening and arranged in a second pattern;

a remote controller including an optical sensor configured to;

detect optical signals from the second light source and the plurality of third light sources for issuing the user command; and

acquire a second optical pattern associated with the second pattern from the detected optical signals from the plurality of third light sources; and

a judging device configured to determine a location or an angle of the remote controller when issuing the user command according to the second optical pattern.

2. The optical remote control system of claim 1, wherein:

the first reference light further includes a plurality of second light sources disposed in the first opening and arranged in a first pattern; and

each of the plurality of the second light sources is an infrared light source.

3. The optical remote control system of claim 2, wherein:

the optical sensor is further configured to detect optical signals from the plurality of second light sources for acquiring a first optical pattern associated with the first pattern; and

the judging device is configured to determine the location or the angle of the remote controller when issuing the user command further according to the first optical pattern.

4. The optical remote control system of claim 3, wherein the judging device is configured to generate the user command according to a location and/or a shape of the first optical pattern.

5. The optical remote control system of claim 3, wherein the judging device is integrated within the remote controller.

6. The optical remote control system of claim 3, wherein the plurality of second light sources are arranged in the first pattern which is asymmetric in a horizontal direction, asymmetric in a vertical direction, or points a specific direction.

7. The optical remote control system of claim 1, wherein the status indicator light is a power status indicator light, a working status indicator light, or an illumination button of the home appliance.

8. The optical remote control system of claim 1, wherein:

the housing further includes a third opening as a sound hole of an acoustic device;

the optical remote control system further includes a third reference light disposed within the housing at a location corresponding to the third opening and including a fourth light source; and

the optical sensor is further configured to detect optical signals from the fourth light source for issuing the user command.

9. The optical remote control system of claim 8, wherein:

the third reference light includes a plurality of fourth light sources disposed in the third opening and arranged in a third pattern;

the optical sensor is further configured to detect optical signals from the plurality of fourth light sources for acquiring a third optical pattern associated with the third pattern; and

the judging device is configured to determine the location or the angle of the remote controller when issuing the user command further according to the third optical pattern.

10. The optical remote control system of claim 8 wherein the fourth light source is an infrared light source.

11. The optical remote control system of claim 1 wherein the plurality of third light sources are infrared light sources.

12. The optical remote control system of claim 1, further comprising:

an acoustic device disposed at a side of the home appliance and including a sound box with a third opening; and

a third reference light disposed in the third opening and including a fourth light source;

wherein

the optical sensor is further configured to detect optical signals from the fourth light source for issuing the user command.

13. The optical remote control system of claim 12, wherein:

the third reference light includes a plurality of fourth light sources disposed in the third opening and arranged in a third pattern;

the optical sensor is further configured to detect optical signals from the plurality of fourth light sources for acquiring a third optical pattern associated with the third pattern; and

the judging device is configured to determine the location or the angle of the remote controller when issuing the user command further according to the third optical pattern.

14. The optical remote control system of claim 12 wherein fourth light source is an infrared light source.

15. An optical remote control system, comprising:

a home appliance configured to operate according to a user command and comprising;

a housing including an opening;

a heat-dissipating device configured to conduct a heat generated by the home appliance out of the housing via the opening;

a reference light disposed in the opening and including a plurality of light sources arranged in a specific pattern; and

a remote controller including an optical sensor configured to detect optical signals from the plurality of light sources for issuing the user command and for acquiring an optical pattern associated with the specific pattern; and

a judging device configured to determine an orientation of the remote controller when issuing the user command according to the optical pattern.

16. The optical remote control system of claim 15, wherein each of the plurality of light sources is an infrared light source.