Portable electrical input device capable of docking an electrical communication device and system thereof

• US 9,250,748 B2
• Filed: 02/14/2013
• Issued: 02/02/2016
• Est. Priority Date: 10/09/2012
• Status: Active Grant

• Current Assignee: PixArt Imaging Incorporated
• Original Assignee: Cho-Yi Lin
• Inventors: Lin, Cho-Yi, Hua, Yu-Shuang, Tang, Chia-Lei
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): Ritchie, Darlene M
• Application Number:
  US13/767,419
• Publication Number:
  US 20140098025A1
• Time in Patent Office: 1,083 Days
• Field of Search: 345/156, 345/169, 345/173, 345/175, 710/2, 715/700, 348/77, 250/221, 250/252.1, 463/31
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: G06F 3/0426 tracking fingers with respect to a virtual keyboard projected or printed on the surface virtual keyboards on touch screens G06F3/04886
• CPC Class Codes: G06F 3/0428 by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual sensing beam interruptions in a planar beam grid of an optical touch-screen G06F3/0421

Abstract

A portable electrical input device capable of docking an electrical communication device is provided. The input device includes a docking base, image sensors, and a communication interface. The sensing regions of the image sensors define an operation region. An operation pattern is selectively configured in the operation region. The operation region is formed on an operation sheet or projected by an illuminating device. When an object operates in the operation region, the processor connected with the image sensors calculates a position information of the object according the sensed object image. The calculated position information is sent out through the communication interface.

Claims

1. A portable electrical input device for docking an electrical communication device, comprising:

a base carrier used to carry the electrical communication device, the base carrier comprises a vibrating element configured for vibrating in response to a control signal;

a communication interface configured in the base carrier;

a first image sensing assembly defining a first sensing region and acquiring a first image;

a second image sensing assembly defining a second sensing region and acquiring a second image, wherein the first sensing region overlaps the second sensing region to define a touch region;

an operation sheet having a function pattern, the operation sheet being configured in the touch region; and

a processor electrically connected to the first image sensing assembly, the second image sensing assembly and the communication interface, which operates on the function pattern of the operation sheet in response to an object, sensed by the first image sensing assembly and the second image sensing assembly, whereby position information of the object in the touch region is obtained by the computation performed by the processor and is sent to the electrical communication device through the communication interface, wherein the processor presets a predetermined brightness threshold or a predetermined brightness range and compares the predetermined brightness threshold or the predetermined brightness range with a brightness of every pixel in the first and second images acquired by the first image sensing assembly and the second image sensing assembly, and the predetermined brightness threshold or the predetermined brightness range is used for removing other objects from the first and second images and keeping the sensed object, wherein the pixel in the first and second images is kept if brightness of the pixel exceeds the predetermined brightness threshold or falls within the predetermined brightness range;

wherein the control signal is generated by the processor after the position information is obtained by the computation performed by the processor.

2. The portable electrical input device of claim 1, further comprising a sounding element to sound in response to the control signal.

3. The portable electrical input device of claim 1, wherein a determination signal is generated by the processor in response to the object sensed by the first image sensing assembly and the second image sensing assembly, wherein when the determination signal indicates the object is in the touch region, the processor generates the control signal.

4. A portable electrical input device for docking an electrical communication device, comprising:

a base carrier used to carry the electrical communication device, the base carrier comprises a vibrating element configured for vibrating in response to a control signal;

a communication interface configured in the base carrier;

a first image sensing assembly defining a first sensing region and acquiring a first image;

a second image sensing assembly defining a second sensing region and acquiring a second image, wherein the first sensing region overlaps the second sensing region to define a touch region;

a light emitting device configured in the base carrier, projecting a function pattern on a working plane corresponding to the touch region; and

a processor electrically connected to the first image sensing assembly, the second image sensing assembly and the communication interface, which operates on the function pattern projected on the working plane in response to an object, sensed by the first image sensing assembly and the second image sensing assembly, whereby position information of the object in the touch region is obtained by the computation performed by the processor and is sent to the electrical communication device through the communication interface, wherein the processor presets a predetermined brightness threshold or a predetermined brightness range and compares the predetermined brightness threshold or the predetermined brightness range with a brightness of every pixel in the first and second images acquired by the first image sensing assembly and the second image sensing assembly, and the predetermined brightness threshold or the predetermined brightness range is used for removing other objects from the first and second images and keeping the sensed object, wherein the pixel in the first and second images is kept if brightness of the pixel exceeds the predetermined brightness threshold or falls within the predetermined brightness range;

wherein the control signal is generated by the processor after the position information is obtained by the computation performed by the processor.

5. The portable electrical input device of claim 4, further comprising an operation sheet on the working plane, for the function pattern being projected thereon.

6. The portable electrical input device of claim 4, further comprising a sounding element to sound in response to the control signal.

7. The portable electrical input device of claim 4, wherein a determination signal is generated by the processor in response to the object sensed by the first image sensing assembly and the second image sensing assembly, wherein when the determination signal indicates the object is in the touch region, the processor generates the control signal.

8. A portable communication electrical system, comprising:

a base carrier, the base carrier comprises a vibrating element configured for vibrating in response to a control signal;

a communication interface configured in the base carrier;

an operation sheet having a function pattern; and

a portable communication electrical device, which is optionally carried by the base carrier, comprising;

a first image sensing assembly defining a first sensing region and acquiring a first image;

a second image sensing assembly defining a second sensing region and acquiring a second image, wherein the first sensing region overlaps the second sensing region to define a touch region, for the operation sheet being arranged therein; and

a processor electrically connected to the first image sensing assembly, the second image sensing assembly and the communication interface, which operates on the function pattern of the operation sheet in response to an object, sensed by the first image sensing assembly and the second image sensing assembly, whereby position information of the object in the touch region is obtained by the computation performed by the processor and is sent to the electrical communication device through the communication interface, wherein the processor presets a predetermined brightness threshold or a predetermined brightness range and compares the predetermined brightness threshold or the predetermined brightness range with a brightness of every pixel in the first and second images acquired by the first image sensing assembly and the second image sensing assembly, and the predetermined brightness threshold or the predetermined brightness range is used for removing other objects from the first and second images and keeping the sensed object, wherein the pixel in the first and second images is kept if brightness of the pixel exceeds the predetermined brightness threshold or falls within the predetermined brightness range;

wherein the control signal is generated by the processor after the position information is obtained by the computation performed by the processor.

9. The portable communication electrical system of claim 8, further comprising a sounding element to sound in response to the control signal.

10. The portable communication electrical system of claim 8, wherein a determination signal is generated by the processor in response to the object sensed by the first image sensing assembly and the second image sensing assembly, wherein when the determination signal indicates the object is in the touch region, the processor generates the control signal.

11. A portable communication electrical system, comprising:

a base carrier, the base carrier comprises a vibrating element configured for vibrating in response to a control signal;

a communication interface configured in the base carrier;

a light emitting device configured in the base carrier, projecting a function pattern on a working plane corresponding to a touch region; and

a portable communication electrical device, which is optionally carried by the base carrier, comprising;

a first image sensing assembly defining a first sensing region and acquiring a first image;

a second image sensing assembly defining a second sensing region and acquiring a second image, wherein the first sensing region overlaps the second sensing region to define a touch region, for the function pattern being arranged therein; and

a processor electrically connected to the first image sensing assembly, the second image sensing assembly and the communication interface, which operates on the function pattern projected on the working plane in response to an object, sensed by the first image sensing assembly and the second image sensing assembly, whereby position information of the object in the touch region is obtained by the computation performed by the processor and is sent to the electrical communication device through the communication interface, wherein the processor presets a predetermined brightness threshold or a predetermined brightness range and compares the predetermined brightness threshold or the predetermined brightness range with a brightness of every pixel in the first and second images acquired by the first image sensing assembly and the second image sensing assembly, and the predetermined brightness threshold or the predetermined brightness range is used for removing other objects from the first and second images and keeping the sensed object, wherein the pixel in the first and second images is kept if brightness of the pixel exceeds the predetermined brightness threshold or falls within the predetermined brightness range;

wherein the control signal is generated by the processor after the position information is obtained by the computation performed by the processor.

12. The portable communication electrical system of claim 11, further comprising an operation sheet on the working plane, for the function pattern being projected thereon.

13. The portable communication electrical system of claim 11, further comprising a sounding element to sound in response to the control signal.

14. The portable communication electrical system of claim 11, wherein a determination signal is generated by the processor in response to the object sensed by the first image sensing assembly and the second image sensing assembly, wherein when the determination signal indicates the object is in the touch region, the processor generates the control signal.