COMPUTER SYSTEM HAVING WIRELESS OPTICAL PEN

• US 20110018799A1
• Filed: 02/09/2010
• Published: 01/27/2011
• Est. Priority Date: 07/21/2009
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: LIN, TSUNG-YU
• Application Number:
  US12/702,444
• Publication Number:
  US 20110018799A1
• Time in Patent Office: Days
• US Class Current: 345/157
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0425 using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking a projected light spot to determine a position on a display surface G06F3/0386

Abstract

An exemplary computer system includes a monitor, a wireless optical pen, a camera module, and a host. The wireless optical pen is configured for projecting an infrared light spot and emitting two visible light beams having different wavelengths to project two visible light spots. The camera module is mounted to the monitor and is configured for capturing images of movement tracks of the infrared light spot and capturing images of the two visible light spots. The host is configured for controlling a movement of a displayed cursor on the monitor and implementing a right-click input or a left-click input according to the images of the movement tracks of the infrared light spot and the images of one of the two visible light spots.

Claims

1. A computer system, comprising:

a monitor;

a wireless optical pen configured for projecting an infrared light spot and emitting two visible light beams having different wavelengths to project two visible light spots,

a camera module mounted to the monitor and configured for capturing images of movement tracks of the infrared light spot and capturing images of the visible light spots; and

a host configured for controlling movement of a displayed cursor on the monitor and implementing a right-click input or a left-click input according to the images of the movement track of the infrared light spot and the images of one of the visible light spots.

2. The computer system of claim 1, wherein the monitor comprises a top side and a support fixedly attached to the top side, and the camera module is fixedly mounted on the support.

3. The computer system of claim 1, further comprising a writing panel, wherein an included angle between an optical axis of the camera module and a line perpendicular to a main surface of the writing panel satisfies the formula:

0°

≦

α

<

90°

, where α

is the included angle.

4. The computer system of claim 3, wherein α

=0°

.

5. The computer system of claim 1, wherein the wireless optical pen comprises a body, a tip, a light source and a power source electrically connected to the light source, the tip moveably and partially received in an end of the body, the light source received in the tip, and the power source received in the body.

6. The computer system of claim 5, wherein the light source comprises an infrared light emitting portion for emitting an infrared light, and two visible light emitting portions for emitting the two visible light beams.

7. The computer system of claim 6, wherein the light source further comprises three switches configured for respectively controlling the infrared light emitting portions and the two visible light emitting portions to turn on and turn off.

8. The computer system of claim 7, wherein the wireless optical pen further comprises a spring arranged between the tip and one of the switches.

9. The computer system of claim 1, wherein the monitor comprises a top side and a hole defined in the top side, and the camera module is fixedly received in the hole.