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Projector system utilizing spatial light modulator pixel

A technology of spatial light modulator and projection system, which is applied in the direction of using projection device image reproducer, light demodulation, picture duplicator, etc., which can solve the problems of equipment scrapping and so on

Inactive Publication Date: 2004-11-24
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This renders the often very expensive equipment obsolete

Method used

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  • Projector system utilizing spatial light modulator pixel
  • Projector system utilizing spatial light modulator pixel
  • Projector system utilizing spatial light modulator pixel

Examples

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Embodiment Construction

[0012] Figure 1 shows a method 100 of an embodiment of the present invention. First, among a number of spatial light modulator (SLM) pixels, the method 100 determines regions of SLM pixels that meet SLM pixel rules for acceptable defects and regions of SLM pixels that do not meet the rules for SLM pixels with acceptable defects (102). These pixels may be in one or a small number of electronic devices, such as integrated circuits (ICs), digital micromirror devices (DMDs), and / or liquid crystal display (LCD) devices. The Acceptable Defective SLM Pixels rule states that the presence of this number of defective SLM pixels in an area is acceptable.

[0013] For example, in one embodiment, the presence of a defective SLM pixel inside the SLM pixel region means that the region does not satisfy the above rules. That is to say, all SLM pixels in the area must be operable, and the area can be considered to meet or pass the above rules. In another embodiment, the presence of less than ...

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PUM

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Abstract

Determining that a plurality of spatial light modulator (SLM) pixels includes one or more first regions of SLM pixels that satisfy an acceptable defective SLM pixel policy, and one or more second regions of SLM pixels that fail the policy, is disclosed. Utilizing the first regions of SLM pixels within a projection system that has a first resolution that is less than a second resolution that would have been provided by utilizing both the first regions of SLM pixels and the second regions of SLM pixels is also disclosed.

Description

Background technique [0001] A projection system is usually a device that integrates a light source, optics, and electronics for front or rear projection of images from a computer or video device onto a wall or screen for viewing a magnified image. Especially among business users who make presentations as part of their job duties, projection systems are widely used. The new projectors weigh only a few pounds, making them more suitable for business travelers. As the quality of projection technology has improved, projectors have also been used in people's homes for high-definition television (HDTV) and other home entertainment purposes. Some industry pundits predict that digital projectors will also become the standard projection technology for movie theaters. [0002] One type of projection system utilizes a spatial light modulator (SLM) to properly project the image data. Examples of SLMs include liquid crystal display (LCD) SLMs, digital micromirror device (DMD) SLMs, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02B26/00G02B27/18G02F2/00G03B21/00G09G3/00G09G3/34G09G3/36H04N5/74H04N9/31
CPCG09G2330/08G09G3/34G09G2310/0235G09G2330/10G09G3/36G09G3/002G09G2340/0407G02F2/00
Inventor W·阿伦M·W·范奥尔德
Owner HEWLETT PACKARD DEV CO LP