LIGHT ADJUSTMENT SYSTEM AND METHOD

• US 20120050700A1
• Filed: 08/05/2011
• Published: 03/01/2012
• Est. Priority Date: 08/26/2010
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: WANG, PO-CHANG
• Application Number:
  US13/198,714
• Publication Number:
  US 20120050700A1
• Time in Patent Office: Days
• US Class Current: 353/99
• CPC Class Codes: G03B 17/54 with projector
• CPC Class Codes: G03B 21/008 using micromirror devices
• CPC Class Codes: H04N 9/312 Driving therefor driving of electronic spatial light modulators in displays other than projection devices G09G3/34, G09G3/36; control of liquid crystal elements G02F1/133; control of micromechanical modulators G02B26/08
• CPC Class Codes: H04N 9/3182 Colour adjustment, e.g. white balance, shading or gamut white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607
• CPC Class Codes: H04N 9/3194 including sensor feedback

Abstract

A projector and method adjusts light. The projector obtains coordinates of each pixel of an image of a projection screen captured by a camera. Furthermore, the projector converts the coordinates of the pixels of a predetermined shape in the image into the coordinates of the pixels of a DMD chip. The projector adjusts an angle of micromirrors corresponding to the converted coordinates of the pixels of the DMD chip to direct light away from a lens of the projector.

Claims

1. A projector, comprising:

a digital micromirrors device (DMD) chip comprising one or more micromirrors;

a lens;

a storage system;

at least one processor; and

one or more programs stored in the storage system and being executable by the at least one processor, the one or more programs comprising;

an obtaining module operable to obtain coordinates of each pixel of an image of a projection screen of the projector captured by a camera;

a determination module operable to determines if the image of the projection screen comprises a predetermined shape;

a conversion module operable to convert the coordinates of the pixels of the predetermined shape in the image into the coordinates of the pixels of the DMD chip, in response to a determination that the image of the projection screen includes the predetermined shape; and

an adjustment module operable to adjusts an angle of micromirrors corresponding to the converted coordinates of the pixels of the DMD chip to direct light away from the lens.

2. The projector of claim 1, wherein the projector is a digital light processing (DLP) projector.

3. The projector of claim 1, wherein the micromirrors are arranged in a rectangular array on a surface of the DMD chip of the projector and can be individually rotated between a minus desired angle to a plus desired angle.

4. The projector of claim 1, wherein the predetermined shape is a human shape.

5. A light adjustment method implemented by a projector, the method comprising:

obtaining coordinates of each pixel of an image of a projection screen of the projector captured by a camera;

determining if the image of the projection screen includes a predetermined shape;

converting the coordinates of the pixels of the predetermined shape in the image into the coordinates of the pixels of a digital micromirrors device (DMD) chip, in response to a determination that the image of the projection screen includes the predetermined shape; and

adjusting an angle of micromirrors corresponding to the converted coordinates of the pixels of the DMD chip to direct light away from a lens of the projector.

6. The method of claim 5, wherein the projector is a digital light processing (DLP) projector.

7. The method of claim 5, wherein the micromirrors are arranged in a rectangular array on a surface of the DMD chip of the projector and can be individually rotated between a minus desired angle to a plus desired angle.

8. The method of claim 5, wherein the predetermined shape is a human shape.

9. A non-transitory computer-readable medium having stored thereon instructions that, when executed by a projector, causing the projector to perform a light adjustment method, the method comprising:

obtaining coordinates of each pixel of an image of a projection screen of the projector captured by a camera;

determining if the image of the projection screen includes a predetermined shape;

converting the coordinates of the pixels of the predetermined shape in the image into the coordinates of the pixels of a digital micromirrors device (DMD) chip, in response to a determination that the image of the projection screen includes the predetermined shape; and

adjusting an angle of micromirrors corresponding to the converted coordinates of the pixels of the DMD chip to direct light away from a lens of the projector.

10. The medium of claim 9, wherein the projector is a digital light processing (DLP) projector.

11. The medium of claim 9, wherein the micromirrors are arranged in a rectangular array on a surface of the DMD chip of the projector and can be individually rotated between a minus desired angle to a plus desired angle.

12. The medium of claim 9, wherein the predetermined shape is a human shape.