Methods and systems for image processing and display

• US 20090059103A1
• Filed: 05/12/2008
• Published: 03/05/2009
• Est. Priority Date: 08/28/2007
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Rego, Reginald I., Azor, Frank C., Casparian, Mark A.
• Granted Patent: US 8,115,698 B2
• Time in Patent Office: Days
• US Class Current: 349/8
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G06F 21/84 output devices, e.g. displays or monitors
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2358/00 Arrangements for display data security
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

Methods and systems for displaying or projecting images that may be implemented to provide the ability for a user of an information handling system to view a selected image on a display or projection screen privately, while allowing other images to appear on the display or projection screen which are publicly viewable to other users who cannot see the privately-displayed image. With appropriate intervening polarization, a user may be allowed to view the private image as well as any displayed or projected publicly viewable images, and the private image and publicly viewable images may be optionally simultaneously displayed or projected if so desired.

Claims

1. A method of displaying images, comprising:

providing at least first and second display layers, said first display layer being disposed in relationship to said second display layer in a position between said second display layer and at least one location for viewing images displayed by said first and second display layers, and said first display layer being transmissive to images displayed by said second display layer;

providing an information handling system coupled to each of said first and second display layers, said information handling system comprising at least one processor configured to process an image file and to selectably display an image from said image file on either of one of said first or second display layers;

processing a first image file with said information handling system for display of a first image from said image file;

selectably displaying said first image from said first image file on said second display layer or only on said first display layer based on at least one of a file characteristic of said first image file, a user input, or a combination thereof;

wherein an image displayed on said second display layer is visible at said at least one viewing location without further polarization after it passes through said first display layer; and

wherein an image displayed on said first display layer comprises one or more portions of light that are polarized relative to background light displayed on said first display layer such that said image is only visible at said at least one viewing location when it is cross polarized relative to the polarization of said one or more portions of light.

2. The method of claim 1, further comprising providing a first output polarizing layer disposed in relationship to said first display layer in a position between said first display layer and said at least one location for viewing images with no input polarizer layer positioned between said first display layer and said second display layer;

and wherein an image displayed on said first display layer is only visible at said at least one viewing location when it is cross polarized relative to the polarization imparted by said first polarizing layer.

3. The method of claim 2, wherein each of said first and second display layers comprises a transmissive liquid crystal display (LCD) layer;

and wherein said method further comprises providing said second display layer as part of a second transmissive LCD display panel that comprises an input polarizing layer and an output polarizing layer, and providing said first LCD layer as part of a first transmissive LCD display panel that has no input polarizing layer and that comprises said first output polarizing layer as an output polarizing layer for said first LCD panel.

4. The method of claim 1, further comprising providing a first input polarizing layer disposed in relationship to said first display layer in a position between said first display layer and said second display layer with no output polarizer layer positioned between said first display layer and said at least one location for viewing images;

and wherein an image displayed on said first display layer is only visible at said at least one viewing location when it is cross polarized relative to the polarization imparted by said first input polarizing layer.

5. The method of claim 4, wherein each of said first and second display layers comprises a transmissive liquid crystal display (LCD) layer;

and wherein said method further comprises providing said second display layer as part of a second transmissive LCD display panel that comprises an input polarizing layer and an output polarizing layer, and providing said first LCD layer as part of a first transmissive LCD display panel that has no output polarizing layer and that comprises said first input polarizing layer as an input polarizing layer for said first LCD panel.

6. The method of claim 1, further comprising providing at least one of software, firmware or a combination thereof, said software or firmware being configured to execute on said at least one processor of said information handling system and to select said display of said first image on said second display layer or only on said first display layer based on identification of said file characteristic of said image file, said user input, or a combination thereof;

and executing said software or firmware on a processor of said information handling system to identify said file characteristic of said first image file, said user input, or a combination thereof, and to selectably display said first image from said first image file on said second display layer or only on said first display layer based on said file characteristic of said first image file, said user input, or a combination thereof.

7. The method of claim 1, wherein said step of selectably displaying said first image from said first image file comprises displaying said first image only on said first display layer based on a file characteristic of said first image file, said file characteristic comprising a first file attribute.

8. The method of claim 7, further comprising processing said first image file with said information handling system to provide said first image file with said first file attribute in response to a user input, prior to processing said first image file with said information handling system for display of said first image from said first image file.

9. The method of claim 1, wherein said step of selectably displaying said first image from said first image file comprises displaying said first image only on said first display layer based on a user input to said information handling system.

10. The method of claim 9, wherein said step of selectably displaying said first image from said first image file further comprises first displaying said first image on said second display layer;

and then displaying said first image only on said first display layer based on a real time user input provided to said information handling system while said first image is displayed on said second display layer.

11. The method of claim 1, wherein said step of selectably displaying said first image comprises selectably displaying said first image only on said first display layer based on at least one of a file characteristic of said first image file, a user input, or a combination thereof;

and wherein said method further comprises;

processing a second image file with said information handling system for display of a second image from said second image file; and

selectably displaying said second image from said second image file on said second display layer based on at least one of a file characteristic of said second image file, a user input, or a combination thereof;

wherein said first image is simultaneously displayed on said first display layer while said second image is displayed on said second display layer, each of said first image and said second images being simultaneously visible at said at least one viewing location when cross polarized relative to the polarization of said one or more portions of light, and only said second image being visible at said at least one viewing location without further polarization.

12. The method of claim 11, wherein said first image is different from said second image;

and wherein at least a portion of said first image and at least a portion of said second image overlap with each other when viewed from said at least one viewing location.

13. The method of claim 1, further comprising providing a polarizer medium for a user positioned at said at least one viewing location;

said polarizer medium being configured to cross-polarize said image displayed on said first display layer relative to the polarization of said one or more portions of light so that said image displayed on said first display layer is visible to said user at said at least one viewing location.

14. A method of displaying images, comprising:

providing at least first and second display layers, said first display layer being disposed in spaced relationship to said second display layer in a position between said second display layer and at least one location for viewing images displayed by said first and second display layers, and said first display layer being transmissive to images displayed by said second display layer;

displaying an image on at least one of said first or second display layers;

wherein an image displayed on said second display layer is visible at said at least one viewing location without further polarization after it passes through said first display layer and said first polarizing layer; and

wherein an image displayed on said first display layer comprises one or more portions of light that are polarized relative to background light displayed on said first display layer such that said image is only visible at said at least one viewing location when it is cross polarized relative to the polarization of said one or more portions of light.

15. The method of claim 14, further comprising providing a first output polarizing layer disposed in relationship to said first display layer in a position between said first display layer and said at least one location for viewing images with no input polarizer layer positioned between said first display layer and said second display layer;

and wherein an image displayed on said first display layer is only visible at said at least one viewing location when it is cross polarized relative to the polarization imparted by said first polarizing layer.

16. The method of claim 15, wherein each of said first and second display layers comprises a transmissive liquid crystal display (LCD) layer;

and wherein said method further comprises providing said second display layer as part of a second transmissive LCD display panel that comprises an input polarizing layer and an output polarizing layer, and providing said first LCD layer as part of a first transmissive LCD display panel that has no input polarizing layer and that comprises said first output polarizing layer as an output polarizing layer for said first LCD panel.

17. The method of claim 14, further comprising providing a first input polarizing layer disposed in relationship to said first display layer in a position between said first display layer and said second display layer with no output polarizer layer positioned between said first display layer and said at least one location for viewing images;

and wherein an image displayed on said first display layer is only visible at said at least one viewing location when it is cross polarized relative to the polarization imparted by said first input polarizing layer.

18. The method of claim 17, wherein each of said first and second display layers comprises a transmissive liquid crystal display (LCD) layer;

and wherein said method further comprises providing said second display layer as part of a second transmissive LCD display panel that comprises an input polarizing layer and an output polarizing layer, and providing said first LCD layer as part of a first transmissive LCD display panel that has no output polarizing layer and that comprises said first input polarizing layer as an input polarizing layer for said first LCD panel.

19. The method of claim 14, further comprising providing at least one of software, firmware or a combination thereof, said software or firmware being configured to execute on at least one processor of an information handling system;

and executing said software or firmware on at least one processor of said information handling system to selectably display said image on at least one of said first or second display layers.

20. The method of claim 14, wherein said step of displaying comprises simultaneously displaying a first image on said first display layer and a second image on said second display layer, each of said first image and said second images being simultaneously visible at said at least one viewing location when cross polarized relative to the polarization of said one or more portions of light, and only said second image being visible at said at least one viewing location without further polarization.

21. The method of claim 20, wherein said first image is different from said second image.

22. The method of claim 20, wherein at least a portion of said first image and at least a portion of said second image overlap with each other when viewed from said at least one viewing location.

23. An information handling system configured for coupling to a display system or a projection system, said information handling system comprising:

at least one processor configured to process a first image file, said at least one processor being configured to selectably provide image data from said first image file for either of;

display on a second display layer of said display system or for projection by a second projection assembly of said projection system, or

only for display on a first display layer of said display system or only for projection by a first projection assembly of said projection system; and

an image display application configured to execute on said at least one processor and to select said first image based on identification of said file characteristic of said image file, said user input, or a combination thereof as either of;

a publicly viewable file for display on said second display layer or for projection on said second projection assembly, or

a privately viewable file for display only on said first display layer or for projection on said first projection assembly.

24. The system of claim 23, wherein said image display application is configured to provide said first image from said first image file as a privately viewable file only for display on said first display layer or only for projection by said first image projection assembly based on a file characteristic of said first image file, said file characteristic comprising a first file attribute;

and wherein said image display application is configured to provide said first image file with said first file attribute in response to a user command, prior to processing said first image file for display of said first image from said first image file.

25. The system of claim 23, wherein said image display application is configured to provide said first image as a privately viewable file only for display on said first display layer or only for projection by said first image projection assembly based on a user input to said information handling system.

26. The system of claim 23, wherein said image display application is configured to:

select said first image as a privately viewable file for display only on said first display layer or for projection only by said first image projection assembly based on at least one of a file characteristic of said first image file, a user input, or a combination thereof,

select a second image from a second image file as a publicly viewable file for display on said second display layer or for projection only by said first image projection assembly based on at least one of a file characteristic of said second image file, a user input, or a combination thereof,

wherein said image display application is further configured to select said first image as privately viewable file for display on said first display layer or projection by said first image projection system simultaneously with display of said second image as a publicly viewable file on said second display layer of projection of said second image as a publically viewable file on said second projection assembly, said first image being different than said second image.