Active display system and method with optical addressing

• US 7,129,910 B2
• Filed: 07/10/2002
• Issued: 10/31/2006
• Est. Priority Date: 07/10/2002
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Allen, William, Da Cunha, John
• Primary Examiner(s): Shalwala, Bipin
• Assistant Examiner(s): SHENG, TOM V
• Application Number:
  US10/192,984
• Publication Number:
  US 20040008159A1
• Time in Patent Office: 1,574 Days
• Field of Search: 345/1.1, 345/1.2, 345/1.3, 345/2.1, 345/2.3, 345/30, 345/204, 348/191, 348/658, 348745-747, 348/804
• US Class Current: 345/1.2
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09G 2360/141 the light conveying information used for selecting or modulating the light emitting or modulating element
• CPC Class Codes: G09G 3/002 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
• CPC Class Codes: G09G 3/2014 by modulation of the duration of a single pulse during which the logic level remains constant
• CPC Class Codes: G09G 3/2088 with use of a plurality of processors, each processor controlling a number of individual elements of the matrix

Abstract

A display system, including an optical transmitter configured to optically transmit digital image information associated with an image to be displayed. The system also includes an active display including a decoder electrically coupled with a plurality of display elements that are configured to produce visible light in response to electrical stimulation. The decoder is configured to receive the digital image information and in response produce a control signal for each of the display elements, the control signals being usable to individually control visible light produced by the display elements so as to cause display of the image.

Claims

1. A display system, comprising:

an optical transmitter configured to optically project digital image information associated with an image to be displayed; and

an active display including a decoder coupled with a plurality of display elements that are configured to produce visible light, where the decoder is configured to receive the projected digital image information and in response produce a control signal for each of the display elements, the control signals being usable to individually control visible light produced by the elements so as to cause display of the image;

where the active display includes a plurality of sub-arrays, each sub-array having at least one said decoder electrically coupled with a plurality of display elements that are configured to produce visible light, and where each decoder of each sub-array is configured to respond to a portion of the image information so as to cause the sub-array to display a portion of the image, such that the sub-arrays collectively display the image.

2. The display system of claim 1, where the optical transmitter is configured to transmit the digital image information via infrared light as a serial bitstream.

3. The display system of claim 2, where the decoder is configured to generate the control signals based on the serial bitstream and apply such control signals in parallel to the plurality of display elements.

4. The display system of claim 1, where the decoder includes a storage configured to store the digital image information or control signals prior to application of the control signals to the display elements.

5. The display system of claim 1, where the decoder is configured to be responsive to a synchronization signal to synchronize application of the control signals to the display elements.

6. The display system of claim 1, where the image information includes intensity information for each of the display elements, and where the decoder is configured to use such intensity information to duty-cycle modulate a pulse train for each display element, the pulse train being operable to intermittently activate the respective display element.

7. The display system of claim 1, where some of the display elements are configured to produce red light, some of the display elements are configured to produce green light, and some of the display elements are configured to produce blue light.

8. The display system of claim 7, where groupings of the display elements define pixels, with each pixel containing red, green and blue sub-pixels.

9. The display system of claim 1, where the optical transmitter is configured to optically transmit the digital image information as a plurality of serial bitstreams, where each of the bitstreams contains at least part of the image information and corresponds to a selected one of the sub-arrays.

10. The display system of claim 9, where the optical transmitter is configured to transmit the serial bitstreams via infrared light.

11. The display system of claim 1, where the optical transmitter is configured to optically transmit at least part of the digital image information via a serial bitstream, and where the serial bitstream corresponds to more than one of the plurality of sub-arrays.

12. An active display, comprising:

a plurality of spatially distinct display sub-arrays that are each configured to display a portion of an image, each sub-array including;

a plurality of emissive components disposed on the sub-array and configured to produce visible light in response to electrical stimulation; and

a decoder electrically coupled with the emissive components and configured to receive an optically transmitted serial bitstream of image information corresponding to the portion of the image to be displayed on the sub-array, the decoder being further configured to generate a plurality of control signals based on the serial bitstream, the control signals being adapted to control the emissive components so as to cause the emissive components to collectively display the portion of the image.

13. The active display of claim 12, where the image information includes intensity information for each of the emissive components, and where the decoder is configured to use such intensity information to duty-cycle modulate a pulse train for each emissive component, the pulse train being operable to intermittently activate the emissive component.

14. The active display of claim 12, where some of the emissive components are configured to produce red light, some of the emissive components are configured to produce green light, and some of the emissive components are configured to produce blue light.

15. The active display of claim 14, where groupings of the emissive components define pixels, with each pixel containing red, green and blue sub-pixels.

16. The active display of claim 12, where the decoder is configured to generate the control signals based on the serial bitstream and apply such control signals in parallel to the plurality of emissive components.

17. The active display of claim 12, where the decoder includes an optical receiver configured to receive digital information transmitted via infrared light.

18. A display system, including:

an active display including a plurality of sub-arrays, each having;

visible light-producing means for producing visible light in response to electrical stimulation;

transmission means for optically transmitting image information associated with an image to be displayed in the form of spatially separated beams of light, individual of the beams of light corresponding to a one of the plurality of the sub-arrays and configured to be incident on the corresponding one of the plurality of the sub-arrays of the active display; and

decoder means for optically receiving the beams of light and generating a plurality of control signals using the beams of light, the decoder means being coupled with the visible light-producing means and configured to apply the control signals to the visible-light producing means so as to cause display of at least a portion of the image.

19. The display system of claim 18, where the transmission means includes an optical transmitter configured to transmit the image information using the beams of light with infrared light via one or more serial bitstreams.

20. A method of actively displaying an image, comprising:

optically projecting digital image information associated with an image to be displayed;

optically receiving the projected digital image information at an active display device;

processing the digital image information to generate a plurality of electrical control signals that each correspond to one of a plurality of individual emissive display elements provided on the active display device; and

applying the electrical control signals to the emissive display elements to control visible light produced by the emissive display elements and thereby display the image;

where optically transmitting digital image information includes optically transmitting a plurality of serial bitstreams, each of the bitstreams corresponding to a portion of the image to be displayed, and where each bitstream is optically received and processed at one of a plurality of spatially distinct display sub-arrays of the active display device.

21. The method of claim 20, further comprising displaying a portion of the image on each of the plurality of spatially distinct sub-arrays.

22. A display system comprising:

an active display including a plurality of display elements, each configured to selectively produce visible light; and

an optical transmitter including one or more emitters configured to optically transmit digital image information in the form of spatially separated beams of light, each beam corresponding to a portion of the active display and being incident on respective display elements of the active display to provide control signals to such respective display elements, thereby Individually controlling visible light produced by such respective display elements to effect display of an image.

23. The display system of claim 22, where each emitter is configured to optically transmit the digital image information on a serial bitstream via low-intensity infrared light beams.

24. The display system of claim 23, where the one or more emitters are configured to generate the control signals and transmit such control signals in parallel to the plurality of display elements.

25. A transmitter for an active display having display elements configured to selectively produce visible light, the transmitter comprising one or more emitters configured to optically transmit digital image information in the form of spatially separated beams of light, each beam corresponding to a portion of the active display and being incident on respective display elements of the active display to provide control signals to such respective display elements, thereby individually controlling visible light produced by such respective display elements to effect display of an image.

26. The transmitter of claim 25, where each emitter is configured to optically transmit the digital image information on a serial bitstream via low-intensity infrared light beams.

27. The transmitter of claim 26, where the one or more emitters are configured to generate the control signals and transmit such control signals in parallel to the display elements.