Cursor display device and cursor display method

• US 9,223,419 B2
• Filed: 04/03/2012
• Issued: 12/29/2015
• Est. Priority Date: 04/07/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Sakurai, Shinji
• Primary Examiner(s): Lao, Lun-Yi
• Assistant Examiner(s): DEADERICK, ELLIOTT J
• Application Number:
  US13/438,290
• Publication Number:
  US 20120256831A1
• Time in Patent Office: 1,365 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/0384 Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
• 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: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry

Abstract

A recognizing process in which an indicated first position is recognized on a display screen projected and displayed by a projector and a controlling process in which control is performed so as to display a cursor associated with the indication in a second position on the display screen are provided, and the cursor is displayed in the second position such that the cursor is displaced from the first position by a predetermined distance.

Claims

1. A cursor display device comprising:

an indicated position recognizing unit that recognizes an indicated position indicated by an indicating unit on a display screen projected and displayed by a projector; and

a cursor display controlling unit that

determines a cursor display position on the display screen offset from the indicated position by determining an amount of offset from the indicated position, and

performs control so as to display a cursor for the indicated position at the cursor display position on the display screen,

wherein the cursor display controlling unit determines the amount of offset from the indicated position so as to be greater, when the indicated position is located in a left-hand area or a right-hand area of the projected display screen, than the amount of offset from the indicated position when the indicated position is located in a lateral middle area of the projected display screen.

2. The cursor display device according to claim 1, wherein

the indicating unit includes an operation accepting unit that accepts an operation from a user, and

when the operation accepting unit accepts a cursor position moving operation for moving the cursor display position, the cursor display controlling unit performs control so as to move the cursor display position in accordance with the cursor position moving operation and display the cursor in a position to which the cursor display position was moved.

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

an imaging unit that takes an image of the display screen and the indicated position,

wherein

the indicated position recognizing unit recognizes the indicated position based on an output of the imaging unit.

4. The cursor display device according to claim 1, wherein

the cursor display controlling unit determines the amount of offset from the indicated position depending on position information of the indicating unit.

5. The cursor display device according to claim 4, wherein

the position information of the indicating unit is a distance from the display screen to the projector.

6. The cursor display device according to claim 1, wherein the determining of the amount of offset from the indicated position is based at least in part on light detected by the indicated position recognizing unit.

7. The cursor display device according to claim 6, wherein the light detected by the indicated position recognizing unit is emitted by the indicating unit.

8. The cursor display device according to claim 7, wherein the light emitted by the indicating unit is emitted from at least a first light-emitting unit and a second light-emitting unit.

9. The cursor display device according to claim 1, wherein

the cursor display controlling unit further determines the amount of offset from the indicated position depending on position information specifying whether the user is right-handed or left-handed.

10. The cursor display device according to claim 1, wherein

the cursor display controlling unit further determines the amount of offset from the indicated position depending on position information specifying whether the user is located on a right side or a left side of the display screen.

11. A cursor display method comprising:

recognizing an indicated position on a display screen projected and displayed by a projector;

determining a cursor display position on the display screen offset from the indicated position by determining an amount of offset from the indicated position; and

displaying a cursor for the indicated position at the cursor display position on the display screen,

wherein the amount of offset from the indicated position is determined so as to be greater, when the indicated position is located in a left-hand area or a right-hand area of the projected display screen, than the amount of offset from the indicated position when the indicated position is located in a lateral middle area of the projected display screen.

12. A cursor display method comprising:

performing calibration of a display position on a projected screen projected by a projector and an indicated position indicated by an indicating unit; and

performing cursor display such that a cursor display position for the indicated position is offset from the indicated position when a determination is made that the indicating unit is in a hovering state,

wherein the performing of the cursor display comprises determining an amount of offset from the indicated position so as to be greater, when the indicated position is located in a left-hand area or a right-hand area of the projected display screen, than the amount of offset from the indicated position when the indicated position is located in a lateral middle area of the projected display screen.

13. The cursor display method according to claim 12, wherein

when the indicating unit is in the hovering state, the amount of offset of the cursor display position is varied depending on the amount of hovering.