ELECTRONIC WHITEBOARD SYSTEM AND OPERATION METHOD

• US 20200133476A1
• Filed: 10/25/2019
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Abandoned Application

• Current Assignee: Coretronic Corporation
• Original Assignee: Coretronic Corporation
• Inventors: Yin, Nan-Jiun, Kuo, Pen-Ning
• Application Number:
  US16/663,355
• Publication Number:
  US 20200133476A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0442 using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

The disclosure provides an electronic whiteboard system and an operation method. The electronic whiteboard system includes an electronic whiteboard, an electronic device, and a first writing device. The electronic whiteboard has a capacitive touch function. The electronic device is coupled to the electronic whiteboard and includes a display. The first writing device includes a first contact surface. The electronic whiteboard receives a first touch input of the first contact surface and generates a first signal strength corresponding to the first touch input. The electronic device displays the first touch input on the display in a first color corresponding to the first signal strength. The electronic whiteboard system and the operation method of the disclosure can display the color corresponding to the signal strength of the touch input on the display of the electronic whiteboard system.

Claims

1. An electronic whiteboard system, comprising an electronic whiteboard, an electronic device, and a first writing device, wherein:

the electronic whiteboard has a capacitive touch function;

the electronic device is coupled to the electronic whiteboard, and the electronic device comprises a display; and

the first writing device comprises a first contact surface, wherein

the electronic whiteboard receives a first touch input of the first contact surface and generates a first signal strength corresponding to the first touch input,

the electronic device displays the first touch input on the display in a first color corresponding to the first signal strength.

2. The electronic whiteboard system according to claim 1, further comprising:

a second writing device, comprising a second contact surface, wherein

the electronic whiteboard receives a second touch input of the second contact surface and generates a second signal strength corresponding to the second touch input,

the electronic device displays the second touch input on the display in a second color corresponding to the second signal strength,

wherein a first contact area of the first contact surface on the electronic whiteboard is greater than a second contact area of the second contact surface on the electronic whiteboard, and the first signal strength is greater than the second signal strength.

3. The electronic whiteboard system according to claim 2, wherein the first contact surface contacts the electronic whiteboard to generate a first capacitance value corresponding to the first contact area, the first capacitance value correspondingly generates the first signal strength, the second contact surface contacts the electronic whiteboard to generate a second capacitance value corresponding to the second contact area, the second capacitance value correspondingly generates the second signal strength, and the first capacitance value is greater than the second capacitance value.

4. The electronic whiteboard system according to claim 3, wherein the first capacitance value falls within a first capacitance strength interval, the second capacitance value falls within a second capacitance strength interval, and the first capacitance strength interval does not overlap the second capacitance strength interval.

5. The electronic whiteboard system according to claim 3, wherein the first signal strength falls within a first signal strength interval, the second signal strength falls within a second signal strength interval, and the first signal strength interval does not overlap the second signal strength interval.

6. The electronic whiteboard system according to claim 2, wherein the electronic device further comprises a processor and a storage device connected to each other, the storage device has a color correspondence table, the electronic device determines, by the processor, the first color corresponding to the first signal strength and the second color corresponding to the second signal strength according to the color correspondence table.

7. The electronic whiteboard system according to claim 6, wherein the storage device further has a learning program, the processor utilizes the learning program to calculate a conversion parameter according to a plurality of influence factors or historical determining results, the electronic device determines, by the processor, the first color corresponding to the first signal strength and the second color corresponding to the second signal strength according to the color correspondence table and the conversion parameter.

8. The electronic whiteboard system according to claim 2, wherein the electronic whiteboard comprises a capacitive touch sensing array to sense the first touch input and the second touch input, and generates a first capacitance value corresponding to the first touch input and a second capacitance value corresponding to the second touch input, the first capacitance value correspondingly generates the first signal strength, and the second capacitance value correspondingly generates the second signal strength.

9. The electronic whiteboard system according to claim 2, wherein the first color is different from the second color.

10. The electronic whiteboard system according to claim 2, wherein the electronic whiteboard generates a first coordinate information corresponding to the first touch input when receiving the first touch input of the first contact surface, the electronic whiteboard generates a second coordinate information corresponding to the second touch input when receiving the second touch input of the second contact surface.

11. The electronic whiteboard system according to claim 2, wherein:

the electronic whiteboard sequentially receives a plurality of continuous third touch inputs of the first contact surface, and generates a plurality of third signal strengths corresponding to the plurality of third touch inputs,

the electronic device further comprises a processor and a storage device connected to each other, the storage device has a confidence level calculating program, the processor utilizes the confidence level calculating program and calculates a plurality of continuous confidence levels corresponding to the plurality of third signal strengths and corresponding to the plurality of third touch inputs according to the plurality of third signal strengths.

12. The electronic whiteboard system according to claim 11, wherein

the electronic device determines the plurality of confidence levels corresponding to the plurality of third signal strengths according to a first signal strength interval corresponding to the first color and a second signal strength interval corresponding to the second color,

when one of the plurality of confidence levels is greater than a threshold, the electronic device displays one of the plurality of third touch inputs corresponding to the one of the plurality of confidence levels on the display in the first color or the second color,

when one of the plurality of confidence levels is not greater than the threshold, the electronic device displays one of the plurality of third touch inputs corresponding to the one of the plurality of confidence levels on the display in a third color different from the first color and the second color.

13. The electronic whiteboard system according to claim 12, wherein

the electronic whiteboard receives a fourth touch input after the plurality of third touch inputs and generates a fourth signal strength corresponding to the fourth touch input, and the processor utilizes the confidence level calculating program and calculates an index confidence level corresponding to the fourth signal strength and corresponding to the plurality of fourth touch inputs according to the fourth signal strength,

when the electronic device displays the plurality of third touch inputs corresponding to the plurality of confidence levels on the display in the third color, and the index confidence level corresponding to the fourth signal strength is greater than the threshold, the electronic device displays the fourth touch input corresponding to the index confidence level on the display in the first color or the second color, and the electronic device modifies the third color of the plurality of third touch inputs displayed on the display into the same color as the color of the fourth touch input displayed on the display.

14. The electronic whiteboard system according to claim 2, wherein the first writing device comprises a first conductive pen barrel, and the first conductive pen barrel contains a first conductive ink, the first conductive ink is electrically connected to the first conductive pen barrel, the first conductive pen barrel has a first electrical conductivity coefficient, the first conductive ink has a second electrical conductivity coefficient, the second writing device comprises a second conductive pen barrel, the second conductive pen barrel contains a second conductive ink, the second conductive ink is electrically connected to the second conductive pen barrel, the second conductive pen barrel has a third electrical conductivity coefficient, the second conductive ink has a fourth electrical conductivity coefficient, the first contact surface contacts the electronic whiteboard to generate a first capacitance value corresponding to the first contact area, the first electrical conductivity coefficient and the second electrical conductivity coefficient, the first capacitance value correspondingly generates the first signal strength, the second contact surface contacts the electronic whiteboard to correspondingly generate a second capacitance value corresponding to the second contact area, the third electrical conductivity coefficient and the fourth electrical conductivity coefficient, the second capacitance value correspondingly generates the second signal strength, and the first capacitance value is greater than the second capacitance value.

15. An operation method, wherein the operation method is used for an electronic whiteboard, an electronic device, and a first writing device, the electronic whiteboard has a capacitive touch function, the electronic device is coupled to the electronic whiteboard and the electronic device comprises a display, the first writing device comprises a first contact surface, and the operation method comprises:

receiving, by the electronic whiteboard, a first touch input of the first contact surface and generating a first signal strength corresponding to the first touch input; and

displaying, by the electronic device, the first touch input on the display in a first color corresponding to the first signal strength.

16. The operation method according to claim 15, further comprising:

receiving, by the electronic whiteboard, a second touch input of a second contact surface of a second writing device and generating a second signal strength corresponding to the second touch input; and

displaying, by the electronic device, the second touch input on the display in a second color corresponding to the second signal strength,

wherein a first contact area of the first contact surface on the electronic whiteboard is greater than a second contact area of the second contact surface on the electronic whiteboard, and the first signal strength is greater than the second signal strength.

17. The operation method according to claim 16, wherein:

the step of receiving, by the electronic whiteboard, the first touch input of the first contact surface and generating the first signal strength corresponding to the first touch input comprises;

contacting the electronic whiteboard through the first contact surface to generate a first capacitance value corresponding to the first contact area, the first capacitance value correspondingly generates the first signal strength; and

the step of receiving, by the electronic whiteboard, the second touch input of the second contact surface and generating the second signal strength corresponding to the second touch input comprises;

contacting the electronic whiteboard through the second contact surface to generate a second capacitance value corresponding to the second contact area, the second capacitance value correspondingly generates the second signal strength, and the first capacitance value is greater than the second capacitance value.

18. The operation method according to claim 17, wherein the first capacitance value is in a first capacitance strength interval, the second capacitance value is in a second capacitance strength interval, and the first capacitance strength interval does not overlap the second capacitance strength interval.

19. The operation method according to claim 17, wherein the first signal strength is in a first signal strength interval, the second signal strength is in a second signal strength interval, and the first signal strength interval does not overlap the second signal strength interval.

20. The operation method according to claim 16, wherein:

the step of displaying, by the electronic device, the first touch input on the display in the first color corresponding to the first signal strength comprises;

determining, by the electronic device, the first color corresponding to the first signal strength according to a color correspondence table; and

the step of displaying, by the electronic device, the second touch input on the display in the second color corresponding to the second signal strength comprises;

determining, by the electronic device, the second color corresponding to the second signal strength according to the color correspondence table.

21. The operation method according to claim 20, further comprising utilizing a learning program and calculating a conversion parameter according to a plurality of influence factors or historical determining results, wherein the electronic device determines the first color corresponding to the first signal strength and the second color corresponding to the second signal strength according to the color correspondence table and the conversion parameter.

22. The operation method according to claim 16, wherein the electronic whiteboard comprises a capacitive touch sensing array, and in the operation method:

the step of receiving, by the electronic whiteboard, the first touch input of the first contact surface and generating the first signal strength corresponding to the first touch input comprises;

sensing the first touch input through the capacitive touch sensing array to correspondingly generate a first capacitance value corresponding to the first touch input, and the first capacitance value correspondingly generates the first signal strength; and

the step of receiving, by the electronic whiteboard, the second touch input of the second contact surface and generating the second signal strength corresponding to the second touch input comprises;

sensing the second touch input through the capacitive touch sensing array to correspondingly generate a second capacitance value corresponding to the second touch input, and the second capacitance value correspondingly generates the second signal strength.

23. The operation method according to claim 16, wherein the first color is different from the second color.

24. The operation method according to claim 16, wherein the electronic whiteboard receives the first touch input of the first contact surface and generates a first coordinate information corresponding to the first touch input, the electronic whiteboard generates a second coordinate information corresponding to the second touch input when receiving the second touch input of the second contact surface.

25. The operation method according to claim 16, further comprising:

receiving, by the electronic whiteboard, a plurality of continuous third touch inputs of the first contact surface in sequence, and generating a plurality of third signal strengths corresponding to the plurality of third touch inputs; and

utilizing a confidence level calculating program to calculate a plurality of continuous confidence levels corresponding to the plurality of third signal strengths and corresponding to the plurality of third touch inputs according to the plurality of third signal strengths.

26. The operation method according to claim 25, further comprising:

determining, by the electronic device, the plurality of confidence levels corresponding to the plurality of third signal strengths according to a first signal strength interval corresponding to the first color and a second signal strength interval corresponding to the second color;

when one of the plurality of confidence levels is greater than a threshold, displaying one of the plurality of third touch inputs corresponding to the one of the plurality of confidence levels by the electronic device on the display in the first color or the second color; and

when one of the plurality of confidence levels is not greater than the threshold, displaying one of the plurality of third touch inputs corresponding to the one of the plurality of confidence levels by the electronic device on the display in a third color different from the first color and the second color.

27. The operation method according to claim 26, further comprising:

receiving, by the electronic whiteboard, the fourth touch input after the plurality of third touch inputs and generating a fourth signal strength corresponding to the fourth touch input, and utilizing the confidence level calculating program to calculate an index confidence level corresponding to the fourth signal strength and corresponding to the plurality of fourth touch inputs according to the fourth signal strength; and

when the electronic device displays the plurality of third touch inputs corresponding to the plurality of confidence levels on the display in the third color, and the index confidence level corresponding to the fourth signal strength is greater than the threshold, displaying the fourth touch input corresponding to the index confidence level by the electronic device on the display in the first color or the second color, and modifying the third color of the plurality of third touch inputs displayed on the display by the electronic device into the same color as the color of the fourth touch input displayed on the display.

28. The operation method according to claim 16, wherein the first writing device comprises a first conductive pen barrel, the first conductive pen barrel contains a first conductive ink, the first conductive ink is electrically connected to the first conductive pen barrel, the first conductive pen barrel has a first electrical conductivity coefficient, the first conductive ink has a second electrical conductivity coefficient, the second writing device comprises a second conductive pen barrel, the second conductive pen barrel contains a second conductive ink, the second conductive ink is electrically connected to the second conductive pen barrel, the second conductive pen barrel has a third electrical conductivity coefficient, the second conductive ink has a fourth electrical conductivity coefficient, and in the operation method:

the step of receiving, by the electronic whiteboard, the first touch input of the first contact surface and generating the first signal strength corresponding to the first touch input comprises;

contacting the electronic whiteboard through the first contact surface to generate a first capacitance value corresponding to the first contact area, the first electrical conductivity coefficient, and the second electrical conductivity coefficient, the first capacitance value correspondingly generates the first signal strength; and

the step of receiving, by the electronic whiteboard, the second touch input of the second contact surface and generating the second signal strength corresponding to the second touch input comprises;

contacting the electronic whiteboard through the second contact surface and generating a second capacitance value corresponding to the second contact area, the third electrical conductivity coefficient and the fourth electrical conductivity coefficient, the second capacitance value correspondingly generates the second signal strength, and the first capacitance value is greater than the second capacitance value.