Coordinate inputting/detecting system and a calibration method therefor

• US 6,507,339 B1
• Filed: 08/22/2000
• Issued: 01/14/2003
• Est. Priority Date: 08/23/1999
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Tanaka, Makoto
• Primary Examiner(s): Saras, Steven
• Assistant Examiner(s): Bell, Paul A.
• Application Number:
  US09/642,647
• Time in Patent Office: 875 Days
• Field of Search: 345/173, 345/175, 345/178, 178/18.01, 178/18.02, 178/18.03, 178/18.09, 702/85, 702/94, 702/95
• US Class Current: 345/178
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

A coordinate inputting/detecting system includes a display apparatus having a display surface, a coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface of the display apparatus so as to detect a designated position in the display surface of the display apparatus, a marking that is provided on the display surface of the display apparatus so as to define a predetermined virtual display area of the display apparatus, a marking coordinate determining device that determines a coordinate of the marking based on the detected designated position of the marker by the coordinate inputting/detecting apparatus when the marking is designated via the coordinate inputting/detecting surface of the coordinate inputting/detecting apparatus, a marking coordinate memorizing device that memorizes the marking coordinate determined by the marking coordinate determining device, and an adjusting device that adjusts a display area of the display apparatus to the virtual display area defined by the marking.

Claims

1. A coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

a coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface of the display apparatus so as to detect a designated position on the display surface of the display apparatus;

a marking that is provided on the display surface of the display apparatus so as to define a predetermined virtual display area of the display apparatus;

a marking coordinate determining device that determines a coordinate of the marking based on detection of said designated position by the coordinate inputting/detecting apparatus when the marking is designated via the coordinate inputting/detecting surface of the coordinate inputting/detecting apparatus;

a marking coordinate memorizing device that memorizes the marking coordinate determined by the marking coordinate determining device;

an adjusting device that adjusts a display area of the display apparatus to the virtual display area defined by the marking; and

wherein the display apparatus is not driven when determining the coordinates of the marking with the marking coordinate determining device.

2. The coordinate inputting/detecting system of claim 1, wherein the coordinate inputting/detecting surface of the coordinate inputting/detecting apparatus comprises a source of light flux and the marking comprises a marking member that interrupts or reflects the light flux from said source.

3. The coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

a coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface of the display apparatus so as to detect a designated position in the display surface of the display apparatus, including a source of light flux produced at the coordinate inputting/detecting surface;

a marking member that is arranged on the display surface of the display apparatus according to a display area of the display apparatus so as to interrupt or reflect light flux from the source;

a marking coordinate determining device that is configured to determine a coordinate where the marking member is arranged based on the detected designated position; and

a marking coordinate memorizing device that memorizes the coordinate of the marking member determined by the marking coordinate determining device.

4. A method of calibrating a display apparatus and a coordinate inputting/detecting apparatus of a coordinate inputting/detecting system, the display apparatus having a display surface, the coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface of the display apparatus so as to detect a designated position on the display surface of the display apparatus, the method comprising the steps of:

arranging a marking that defines a predetermined virtual display area of the display apparatus on the display surface of the display apparatus;

driving the coordinate inputting/detecting apparatus;

detecting a coordinate of the marking when the marking is designated via the coordinate inputting/detecting surface of the coordinate inputing/detecting apparatus;

memorizing the detected coordinate, the detection step being performed by not driving the display apparatus; and

adjusting a display area of the display apparatus to the virtual display area defined by the marking.

5. The method of claim 4, wherein the display apparatus is not driven during said driving step.

6. The method of claim 4, wherein the coordinate inputting/detecting surface of the coordinate inputting/detecting apparatus comprises a source of light flux and the detecting. step comprises detecting an interruption or reflection of the light flux by said marking.

7. A method of calibrating a display apparatus and a coordinate inputting/detecting apparatus of a coordinate inputting/detecting system, the display apparatus having a display surface, the coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface including a source of light flux, and the coordinate inputting/detecting surface of the coordinate inputting/detecting apparatus being arranged at the surface of the display surface of the display apparatus so as to detect a designated position on the display surface of the display apparatus, the method comprising steps of:

driving the display apparatus so as to generate a display area thereof in the display surface of the display apparatus;

arranging a marking member to interrupt or reflect the light flux on the display surface of the display apparatus according to the display area of the display apparatus;

driving the coordinate inputting/detecting apparatus;

detecting a coordinate of the marking member based on interrupting or reflecting the light flux by the marking member; and

memorizing the detected coordinate of the marking member.

8. The method of claim 7, further comprising:

removing the marking member from the display surface of the display apparatus.

9. A coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

first means for detecting a designated position on the display surface of the display apparatus, including a coordinate inputting/detecting surface arranged at the display surface of the display apparatus;

a marking that is provided on the display surface of the apparatus so as to define a predetermined virtual display area of the display apparatus;

second means for detecting a coordinate of the marking based on the designated position detected by said first means when the marking is designated via the coordinate inputting/detecting surface of the first means;

means for memorizing the marking coordinate detected by the second means; and

wherein said display apparatus is not driven for detecting the coordinate of the marking.

10. The system of claim 9, further comprising:

means for adjusting a display area of the display apparatus to the virtual display area defined by the marking.

11. A coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

first means for detecting a designated position on the display surface of the display apparatus, including a coordinate inputting/detecting surface arranged at the display surface of the display apparatus and including a source of light flux;

second means for interrupting or reflecting the light flux, said second means being provided on the display surface of the display apparatus according to a display area of the display apparatus;

third means for detecting a coordinate of a position based on interrupting or reflecting the light flux by the second means; and

fourth means for memorizing the coordinate detected by the third means.

12. The system of claim 11, wherein said second means is removably provided on said display surface.

13. A coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

a coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface so as to detect a designated position on the display surface;

a marking provided on the display surface to define a predetermined virtual display area of the display apparatus;

a marking coordinate determining device for determining marking coordinates;

means for storing the marking coordinates;

means for adjusting a display area of the display apparatus to the virtual display area defined by the marking; and

wherein the display apparatus is not driven when the marking coordinates are determined.

14. A method of calibrating a display apparatus and a coordinate inputting/detecting apparatus of a coordinate inputting/detecting system, the method comprising:

providing a marking on a display surface of the display apparatus to define a predetermined virtual display area of the display apparatus;

determining marking coordinates of the marking provided on the display surface;

storing the marking coordinates in a memory;

adjusting a display area of the display apparatus to the virtual display area defined by the marking; and

wherein the display apparatus is not driven when the marking coordinates are determined.

15. A coordinate inputting/detecting system, comprising:

a display apparatus having a display surface;

a coordinate inputting/detecting apparatus having a coordinate inputting/detecting surface arranged at the display surface so as to detect a designated position on the display surface, said coordinate inputting/detecting apparatus further including a source of light flux;

a marking member provided on the display surface to define a predetermined virtual display area of the display apparatus;

a marking coordinate determining device for determining marking coordinates, the marking coordinates being determined by interrupting or reflecting the light flux by the marking member;

means for storing the marking coordinates; and

means for adjusting a display area of the display apparatus to the virtual display area defined by the marking.