Device, method, and computer readable medium for mapping a graphics tablet to an associated display

• US 8,063,890 B2
• Filed: 05/15/2007
• Issued: 11/22/2011
• Est. Priority Date: 05/15/2007
• Status: Active Grant

• Current Assignee: Wacom Co Limited (Wacom)
• Original Assignee: Wacom Co Limited (Wacom)
• Inventors: Fleck, David
• Primary Examiner(s): Hjerpe; Richard
• Assistant Examiner(s): Okebato; Sahlu
• Application Number:
  US11/798,620
• Publication Number:
  US 20080284730A1
• Time in Patent Office: 1,652 Days
• Field of Search: 345/173, 345156-172, 345/179, 178 1801- 1811
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041661 using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window

Abstract

A digitizer system for controlling movement of a pointer on a display unit is provided. The system includes a digitizer tablet for detecting an input position and generating tablet coordinate data according to the detected input position. A mapping unit maps the tablet coordinate data to display coordinate data based on a plurality of different predetermined scaling relationships and provides the display coordinate data to the display unit. An input device controls the mapping unit to switch between the predetermined scaling relationships.

Claims

1. A mapping device suitable for use in combination with a pointing device, a display unit having a display screen, and a digitizer tablet including sensing elements arranged below a detection surface and being operatively associated with the pointing device for generating tablet positional data representing tablet input coordinates of the pointing device relative to the sensing elements as the pointing device is moved on or near the detection surface, the mapping device comprising:

a unit operable in first and second modes for respectively applying first and second scaling relationships to the tablet positional data to generate display positional data for the display screen of the display unit, the display positional data representing screen coordinates corresponding to the tablet input coordinates of the pointing device on or near the detection surface, the first and second scaling relationships being different from one another such that for a given amount of movement by the pointing device on or near the detection surface, the screen coordinates generated by the first scaling relationship of the first mode represent a different distance on the display screen than the screen coordinates generated by the second scaling relationship of the second mode; and

a user-activated mode switching device for permitting the user to selectively switch the unit between the first and second modes without changing the screen coordinates so that upon switching between modes the screen coordinates remain unchanged and continue to correspond to the tablet input coordinates of the pointing device on or near the detection surface, the user-activated mode switching device permitting switching between the first and second modes irrespective of the location of the screen coordinates relative to the display screen.

2. The mapping device of claim 1, wherein in the first mode the tablet input coordinates are mapped to screen coordinates lying in a first region of a first size, wherein in the second mode the tablet input coordinates are mapped to screen coordinates lying in a second region of a second size, and wherein the first size is different than the second size.

3. The mapping device of claim 1, wherein the first scaling relationship is configured such that the detection surface of the digitizer tablet maps to an entire surface of the display screen, and wherein the second scaling relationship is configured such that the detection surface of the digitizer tablet maps to less or more than the entire surface of the display screen.

4. The mapping device of claim 1, wherein the user-activated mode switching device is located on or constitutes part of the pointing device, the digitizer tablet, or a personal computer.

5. The mapping device of claim 1, wherein at least one of the scaling relationships is preset by the user.

6. The mapping device of claim 1, wherein the unit constitutes part of the digitizer tablet, part of the display unit, or part of a personal computer that interfaces the digitizer tablet with the display unit.

7. A system comprising:

a pointing device;

a digitizer tablet comprising sensing elements arranged below a detection surface, the digitizer tablet being operatively associated with the pointing device for generating tablet positional data representing tablet input coordinates of the pointing device relative to the sensing elements as the pointing device is moved on or near the detection surface;

a mapping unit operable in first and second modes for respectively applying first and second scaling relationships to the tablet positional data to generate display positional data for a display screen of a display unit, the display positional data representing screen coordinates corresponding to the tablet input coordinates of the pointing device on or near the detection surface, the first and second scaling relationships being different from one another such that for a given amount of movement by the pointing device on or near the detection surface, the screen coordinates generated by the first scaling relationship of the first mode represent a different distance on the display screen than the screen coordinates generated by the second scaling relationship of the second mode;

a user-activated mode switching device for permitting the user to selectively switch the mapping unit between the first and second modes without changing the screen coordinates so that upon switching between modes the screen coordinates remain unchanged and continue to correspond to the tablet input coordinates of the pointing device on or near the detection surface, the user-activated mode switching device permitting switching between the first and second modes irrespective of the location of the screen coordinates relative to the display screen.

8. The system of claim 7, wherein the pointing device is pen shaped.

9. The system of claim 7, wherein in the first mode the tablet input coordinates are mapped to screen coordinates lying in a first region of a first size, wherein in the second mode the tablet input coordinates are mapped to screen coordinates lying in a second region of a second size, and wherein the first size is different than the second size.

10. The system of claim 7, wherein the sensing elements are arranged in an X-Y coordinate grid.

11. The system of claim 7, wherein the user-activated mode switching device comprises a button, a key, a wheel, or a switch associated with the digitizer tablet.

12. The system of claim 7, wherein the first scaling relationship is configured such that the detection surface of the digitizer tablet maps to an entire surface of the display screen, and wherein the second scaling relationship is configured such that the detection surface of the digitizer tablet maps to less or more than the entire surface of the display screen.

13. The system of claim 7, wherein the user-activated mode switching device is located on or constitutes part of the pointing device, the digitizer tablet, or a personal computer.

14. The system of claim 7, wherein at least one of the scaling relationships is preset by the user.

15. The system of claim 7, wherein the mapping unit constitutes part of the digitizer tablet, part of the display unit, or part of a personal computer that interfaces the digitizer tablet with the display unit.

16. The system of claim 7, wherein the system comprises the display unit.

17. A method of mapping positional data from a digitizer tablet to a display screen, comprising:

generating tablet positional data representing tablet input coordinates of a pointing device relative to sensing elements of a digitizer tablet as the pointing device is moved on or near a detection surface of the digitizer table, the sensing elements being arranged below the detection surface;

operating a mapping unit in a first mode to apply a first scaling relationship to the tablet positional data to generate display positional data for a display screen of a display unit, the display positional data representing screen coordinates corresponding to the tablet input coordinates of the pointing device on or near the detection surface;

activating a mode switching device to selectively switch between the first mode and a second mode to apply a second scaling relationship without changing the screen coordinates so that upon switching between the first and second modes the screen coordinates remain unchanged and continue to correspond to the tablet input coordinates of the pointing device on or near the detection surface, the mode switching device permitting switching between the first and second scaling relationships irrespective of the location of the screen coordinates relative to the display screen; and

operating the mapping unit in the second mode to apply the second scaling relationship to the tablet positional data,

wherein the first and second scaling relationships are different from one another such that for a given amount of movement by the pointing device on or near the detection surface, the screen coordinates generated by the first scaling relationship of the first mode represent a different distance on the display screen than the screen coordinates generated by the second scaling relationship of the second mode.

18. The method of claim 17, wherein in the first mode the tablet input coordinates are mapped to screen coordinates lying in a first region of a first size, wherein in the second mode the tablet input coordinates are mapped to screen coordinates lying in a second region of a second size, and wherein the first size is different than the second size.

19. The method of claim 17, wherein the mode switching device is located on or constitutes part of the pointing device, the digitizer tablet, or a personal computer.