Interactive display

• US 20040012565A1
• Filed: 07/22/2002
• Published: 01/22/2004
• Est. Priority Date: 07/22/2002
• Status: Abandoned Application

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Cok, Ronald S.
• Application Number:
  US10/201,237
• Publication Number:
  US 20040012565A1
• Time in Patent Office: Days
• US Class Current: 345/158
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• 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 2310/0256 with the purpose of reversing the voltage across a light emitting or modulating element within a pixel
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2360/142 the light being detected by light detection means within each pixel
• CPC Class Codes: G09G 3/02 by tracing or scanning a light beam on a screen
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3216 using a passive matrix
• CPC Class Codes: G09G 3/3225 using an active matrix

Abstract

An OLED display includes: a two dimensional array of light emitting pixels for displaying an image; a two dimensional array of photosensors interspersed with the array of light emitting pixels for producing an incident light signal; and a display controller connected to the array of photosensors, the display controller including a signal processor responsive to the incident light signal for detecting the location of a point of light directed onto the display by a light emitting pointer and generating a pointer signal representing the location of the point of light.

Claims

1. An OLED display, comprising:

a) a two dimensional array of light emitting pixels for displaying an image;

b) a two dimensional array of photosensors interspersed with the array of light emitting pixels for producing an incident light signal; and

c) a display controller connected to the array of photosensors, the display controller including a signal processor responsive to the incident light signal for detecting the location of a point of light directed onto the display by a light emitting pointer and generating a pointer signal representing the location of the point of light.

2. The display claimed in claim 1, wherein the light emitting pointer is a laser.

3. The display claimed in claim 1, wherein the light emitted from the pointer is modulated in time.

4. The display claimed in claim 1, wherein the signal processor is capable of simultaneously detecting a plurality of points of light emitted by a plurality of light emitting pointers.

5. The display claimed in claim 4, wherein the light emitting pointers emit light modulated in time, and each pointer modulates the light at a different frequency, and the signal processor is capable of detecting which light emitting pointer emitted light emitted from the plurality of light emitting pointers are distinguished by having different frequencies of modulation.

6. The display claimed in claim 1, wherein a photosensor is associated with each light emitting pixel.

7. The display claimed in claim 1, wherein the display is a tiled display.

8. The display claimed in claim 7, wherein each tile includes an image expanding optical face plate.

9. The display claimed in claim 1, wherein the signal processor includes a temporal filter responsive to the incident light signal to produce a difference signal and a spatial filter responsive to the difference signal to generate the pointer signal.

10. A method of interacting with a display, comprising the steps of:

a) providing an OLED display having,

i) a two dimensional array of light emitting pixels for displaying an image;

ii) a two dimensional array of photosensors interspersed with the array of light emitting pixels; and

iii) a display controller connected to the array of photosensors, the display controller including a signal processor for detecting the location of a point of light directed onto the display by a light emitting pointer and generating a signal representing the location of the point of light;

b) illuminating the display with a point of light from the light emitting pointer;

c) detecting the location of the point of light; and

d) selectively changing the image being displayed by the display in response to the location of the point of light.

11. The method claimed in claim 10, wherein the interaction includes manipulation of objects in a graphical user interface.