Back to results
US 2003/0193485 A1Published application
Active display system
AssigneeNone recorded
InventorsJohn M. da Cunha, William J. Allen
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNone recorded
InventorsJohn M. da Cunha, William J. Allen
Estimating the term…
A system for displaying images on an active display is provided. The system includes an image information source configured to project optical image information, a plurality of display elements, and a plurality of receiving elements associated with the display elements, the plurality of receiving elements being configured to receive the image information from the image information source and further configured to activate the associated display elements according to the image information.
An active display system comprising:
A method for displaying images on a screen, the method comprising:
A display system comprising:
An optically addressed display system comprising:
A method of optically addressing a display, the method comprising:
A method for optically addressing an active display, the method comprising:
A projection device comprising:
A display system comprising:
Dependencies are inferred from the claim text.
Backward citations are indexed for grants only.
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes: by tracing or scanning a…
Using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide;…
Projection devices for colour picture display , e.g. using electronic spatial light modulators [ESLM]: scanning a light beam on the display screen
The light conveying information used for selecting or modulating the light emitting or modulating element: the light being detected by light…
Term end not estimated
Various display systems have been used over the years to generate images. For example, both front projection systems and rear projection systems are used today to display images. Such display systems may employ image devices, such as cathode ray tubes (CRTs), liquid crystal displays (LCDs), or electrically-addressed emissive displays, e.g. plasma displays. The display systems further may incorporate a passive display screen or an active display screen.
The marketability of each display system may depend on numerous factors. Specifically, the quality of the image generated by the display system often is important to consumers. For example, consumers typically prefer a display system that can generate clear, bright images. However, in some display systems, image artifacts may affect the quality of the image. Moreover, some systems require expensive projection equipment to generate a clear, bright image. Display systems that employ passive screens, for example, may require costly projection equipment configured to supply sufficient optical energy to display images. Correspondingly, active display screens may require use of extensive and complex addressing schemes and control circuits.
A system for displaying images on an active display is provided. The system includes an image information source configured to project image information, a plurality of display elements, and a plurality of receiving elements associated with the display elements, the receiving elements being configured to receive the image information from the image information source and to activate the associated display elements according to the image information.
FIG. 1 is a schematic diagram of an optically-addressed display system wherein a light engine projects image information onto a display screen according to one embodiment of the present invention.
FIG. 2 is a schematic diagram of an optically-addressed display system showing a laser scanning a display screen according to another embodiment of the present invention.
FIG. 3 is a schematic diagram of a portion of an optically-addressed display screen for the display system illustrated in FIG. 2.
Referring initially to FIG. 1, a display system according to an embodiment of the present invention is shown generally at 10. Specifically, FIG. 1 illustrates, schematically, a display system including a projector 12 and an optically-addressed display screen 14, wherein the projector is adapted to project image information onto the display screen.
Display system 10 may take the form of a projection system, such as a rear projection system, a front projection system, or some other suitable projection system. These display systems may have different configurations. For example, in a front projection system, the viewer typically is located on the same side of the screen as the projector and the projector is spaced-apart and separate from the screen. Alternatively, in a rear projection display system, an image is visible by a viewer situated on the opposite side of the screen from the projector and the projector and the screen typically are integrated in a single unit.
Projector 12 typically includes a light engine 18. Light engine 18 is adapted to direct and transmit optical image information 20 to screen 14. Optical image information 20, as used herein, includes light adapted to generate an image, wherein the light may be visible and/or invisible light. For example, and as described in more detail below, light engine 18 may be any suitable illumination source adapted to optically address screen 14, including single light sources such as a mercury lamp, a laser, etc., and/or multiple light sources such as light emitting diodes (LEDs), etc. The light generated by these light sources may be transmitted and/or projected onto screen 14. Additionally, projector 12 may include optics, spatial light modulators, focusing devices, color-generation devices, controllers, etc.