Display device, control method of display device and program

• US 9,182,832 B2
• Filed: 08/06/2012
• Issued: 11/10/2015
• Est. Priority Date: 08/25/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Natori, Takashi
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US13/567,329
• Publication Number:
  US 20130050072A1
• Time in Patent Office: 1,191 Days
• Field of Search: 345156-183, 353/42, 382/103, 715/211, 715/716, 715/719
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0308 comprising a plurality of distinctive and separately oriented light emitters or reflectors associated to the pointing device, e.g. remote cursor controller with distinct and separately oriented LEDs at the tip whose radiations are captured by a photo-detector associated to the screen
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A display device includes a display unit to display a video screen on a display surface, a information detection unit to detect position information of a plurality of detection points arranged on a stationery tool imitating a shape of a stationery, and identification information added to the plurality of detection points respectively and different among the plurality of detection points, and an angle determination unit to determine a rotation angle of the stationery tool on the display surface based on the position information of the plural detection points.

Claims

1. A display device comprising:

a display unit to display a video screen on a display surface;

an information detection unit to detect position information on the display surface of a plurality of detection points arranged on a tool having a shape of a stationery tool, the detection points being in contact with the display surface when being detected, and the tool having identification information added to the plurality of detection points, respectively, and the identification information being different among the plurality of detection points; and

an angle determination unit to determine a rotation angle of the tool on the display surface based on the position information of the plurality of detection points.

2. The display device according to claim 1, further comprising:

a display control unit to display an object corresponding to the stationery tool, wherein

the display control unit rotates and displays the object based on the determined rotation angle of the tool.

3. The display device according to claim 2, wherein the tool is one of a ruler and a protractor.

4. The display device according to claim 2, further comprising:

a type determination unit to determine a type of the tool based on a combination of the detected identification information of the plurality of detection points, wherein

the display control unit displays the object corresponding to the type of the tool determined by the type determination unit.

5. The display device according to claim 2, wherein

the information detection unit detects operation information of an operator of the tool, and

the display control unit changes a size and/or a color of the object based on the detected operation information.

6. The display device according to claim 2, wherein

the display control unit displays a rotational locus of the object when the object is rotated.

7. The display device according to claim 6, wherein

the information detection unit detects operation information of an operator of the tool, and

the display control unit erases the rotational locus based on the detected operation information.

8. The display device according to claim 1, wherein

the display surface is a projection surface, and

the display unit projects the video screen onto the projection surface.

9. The display device according to claim 1, wherein the position information indicates a position of the tool relative to the display surface.

10. A control method of a display device to display a video screen on a display surface, comprising:

detecting position information on the display surface of a plurality of detection points arranged on a tool having a shape of a stationery tool, the detection points being in contact with the display surface when being detected, and the tool having identification information added to the plurality of detection points, respectively, and the identification information being different among the plurality of detection points;

determining a rotation angle of the tool on the display surface based on the position information of the plurality of detection points; and

displaying an object corresponding to the tool on the video screen, wherein

the object displayed on the video screen is rotated based on the determined rotation angle of the tool.

11. A non-transitory computer readable storage medium storing a program to cause a computer to execute the control method of the display device according to claim 10.

12. A tool for use with a display device having a display surface, the tool comprising:

a tool body configured to be placed on the display surface; and

a plurality of separate detection points provided on the tool body,

when the tool body is placed on the display surface, the tool is configured to provide positions of the detection points on the display surface to the display device, the detection points being in contact with the display surface when being detected, and, based on the positions of the detection points, the display device displays a display object with a shape corresponding to a shape of the tool, and

when the tool is rotated relative to the display surface, the tool provides the rotated positions of the detection points to the display device causing the display object to be rotated to a position on the display device corresponding to the rotated position of the detection points.

13. The tool according to claim 12, wherein the tool is configured to provide identification information for identifying the tool to the display device.

14. The tool according to claim 13, wherein the identification information further identifies each of the detection points.

15. The tool according to claim 12, wherein the display object has a position on the display corresponding to a position of the tool on the display surface.

16. The tool according to claim 12, wherein the tool includes two of the detection points.

17. The tool according to claim 12, wherein the display object has a size dimension bigger than a size dimension of the tool.

18. The tool according to claim 12, wherein the tool is a ruler tool.

19. A system comprising:

a display device having a display surface;

a tool configured to be placed on the display surface, the tool having a plurality of separate detection points;

a detection unit configured to detect positions of the plurality of separate detection points when the detection points are in contact with the display device; and

a display control unit configured to, based on the detected positions of the detection points, display a display object on the display device in a shape corresponding to a shape of the tool, and when the tool is rotated relative to the display surface, the display control unit rotating the display object to a position on the display device corresponding to the rotated position of the detection points.

20. The system according to claim 19, wherein the tool is configured to provide identification information for identifying the tool to the display control unit.

21. The system according to claim 20, wherein the identification information further identifies each of the detection points.

22. The system according to claim 19, wherein the display object has a position on the display corresponding to a position of the tool on the display surface.

23. The system according to claim 19, wherein the tool includes two of the detection points.

24. The system according to claim 19, wherein the display object has a size dimension bigger than a size dimension of the tool.

25. The system according to claim 19, wherein the tool is a ruler tool.

26. The system according to claim 19, further comprising a pen tool having a tip configured to be placed on the display surface, the pen tool configured to convey a signal to the detection unit, the detection unit configured to determine a position of the pen tip based on the signal, and

the display control unit configured to display an image on the display based on the determined position of the pen tip.

27. A method of utilizing a tool with a display device having a display surface, the tool having a plurality of separate detection points, the method comprising:

when the tool is placed on the display surface, detecting positions of the plurality of separate detection points on the display surface, the detection points being in contact with the display surface when being detected;

then displaying a display object on the display device in a shape corresponding to a shape of the tool; and

then the tool is rotated relative to the display surface, causing the display object to be rotated to a position on the display device corresponding to the rotated position of the detection points.

28. The method according to claim 27, further comprising providing identification information for identifying the tool to a display control unit of the display device.

29. The method according to claim 28, wherein the identification information further identifies each of the detection points.

30. The method according to claim 27, further comprising displaying the display object at a position on the display corresponding to a position of the tool on the display surface.

31. The method according to claim 27, wherein the tool includes two of the detection points.

32. The method according to claim 27, further comprising displaying the display object with a size dimension that is bigger than a size dimension of the tool.

33. The method according to claim 27, wherein the tool is a ruler tool.