Optical input device, electronic device, and optical input system

• US 20100271332A1
• Filed: 06/05/2009
• Published: 10/28/2010
• Est. Priority Date: 04/22/2009
• Status: Abandoned Application

• Current Assignee: KYE Systems Corporation
• Original Assignee: KYE Systems Corporation
• Inventors: Shen, Tsung-Hsien, Wu, Wen-Tai
• Application Number:
  US12/457,265
• Publication Number:
  US 20100271332A1
• Time in Patent Office: Days
• US Class Current: 345/175
• 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 optical input device is applied in an electronic device. The optical input device includes a light source generator and a photosensitive plate. The light source generator has a body and a light source disposed within the body. The photosensitive plate is electrically connected to the electronic device, or is electrically disposed within the electronic device, and is electrically connected to a microprocessor. The light source of the light source generator emits a light ray through the body to form a light pattern image on the photosensitive plate. The photosensitive plate detects a deformation of the light pattern image, and outputs a control signal to the microprocessor correspondingly according to a shape of the light pattern image, enabling the electronic device to execute a corresponding preset function.

Claims

1. An optical input device, applied in an electronic device, comprising:

a light source generator, having a body and at least one light source, wherein the light source is disposed within the body, and emits a light ray through the body to form a light pattern image; and

a photosensitive plate, electrically connected to the electronic device, and having a microprocessor inside;

wherein the light pattern image generated by the light source generator is projected onto the photosensitive plate, the photosensitive plate detects a deformation of the light pattern image and outputs a control signal to the microprocessor correspondingly, and the microprocessor transmits the control signal to the electronic device.

2. The optical input device according to claim 1, wherein the light source generator further comprises a lens disposed within the body for refracting the light ray through the body.

3. The optical input device according to claim 1, wherein a light sensor is disposed on the photosensitive plate, the light sensor is electrically connected to the microprocessor, and is adapted to dynamically capture shape changes of the light pattern image and to output the control signal to the microprocessor correspondingly.

4. The optical input device according to claim 1, wherein the photosensitive plate comprises a plurality of light-dependent resistors electrically connected to the microprocessor, and the light-dependent resistors are adapted to dynamically capture shape changes of the light pattern image and to output the control signal to the microprocessor correspondingly.

5. An electronic device, comprising:

a body, having a microprocessor inside and a photosensitive plate on a surface of the body, wherein the photosensitive plate is electrically connected to the microprocessor; and

a light source generator, having a body and at least one light source, wherein the light source is disposed within the body, and emits a light ray through the body to form a light pattern image;

wherein the light pattern image generated by the light source generator is projected onto the photosensitive plate, the photosensitive plate detects a deformation of the light pattern image and outputs a control signal to the microprocessor correspondingly, and the electronic device executes a corresponding preset function.

6. The electronic device according to claim 5, wherein the light source generator further comprises a lens disposed within the body for refracting the light ray through the body.

7. The electronic device according to claim 5, wherein a light sensor is disposed on the photosensitive plate, the light sensor is electrically connected to the microprocessor, and is adapted to dynamically capture shape changes of the light pattern image and to output the control signal to the microprocessor correspondingly.

8. The electronic device according to claim 5, wherein the photosensitive plate comprises a plurality of light-dependent resistors electrically connected to the microprocessor, and the light-dependent resistors are adapted to dynamically capture shape changes of the light pattern image and to output the control signal to the microprocessor correspondingly.

9. An optical input system, applied in an electronic device, comprising:

a light source generator, having a body and at least one light source, wherein the light source is disposed within the body, and emits a light ray through the body to form a light pattern image;

a light pattern image capturing device, connected to the electronic device; and

a work plane;

wherein the light pattern image generated by the light source generator is projected on the work plane, the image capturing device detects a deformation of the light pattern image, and a corresponding control signal is generated within the electronic device.

10. The optical input system according to claim 9, wherein the light pattern image capturing device is a webcam.