Flash optimized using OLED display

• US 9,692,955 B1
• Filed: 03/21/2016
• Issued: 06/27/2017
• Est. Priority Date: 03/21/2016
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Hack, Michael, Premutico, Mauro
• Primary Examiner(s): Dagnew, Mekonnen
• Application Number:
  US15/075,423
• Time in Patent Office: 463 Days
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3275 Details of drivers for data electrodes
• CPC Class Codes: H04N 23/56 provided with illuminating means
• CPC Class Codes: H04N 23/71 Circuitry for evaluating the brightness variation
• CPC Class Codes: H04N 23/74 by influencing the scene brightness using illuminating means
• CPC Class Codes: H04N 5/58 in dependence upon ambient light

Abstract

An image processing system includes an image sensor, an OLED display, a profile selection processor configured to select an output profile from among a plurality of pre-stored output profiles based at least in part on a digital representation of a target scene captured by the image sensor, and an image driver configured to drive the OLED display to display an image based on the selected output profile during a capture of an image of the target scene with the image sensor.

Claims

1. A method of selectively generating image enhancing light using an embedded OLED display, comprising:

capturing, with an image sensor, a digital representation of a target scene upon detection of an image capture command for capture of the target scene;

detecting one or more characteristics of the target scene from the digital representation;

selecting a pixel output profile from among a plurality of stored output profiles based at least in part on the one or more characteristics; and

driving the OLED display to generate a light output according to the selected pixel output profile to illuminate the target scene during capture of an image of the target scene with the image sensor.

2. The method of claim 1, wherein the one or more characteristics include one or more of:

a distance of a focal object in the target scene from the image sensor, a location of the focal object in the target scene, ambient light intensity, and ambient light color.

3. The method of claim 1, wherein the pixel output profile is selected based at least in part on a characteristic of the image sensor.

4. The method of claim 3, wherein the characteristic of the image sensor is a level of light sensitivity of the image sensor.

5. The method of claim 1, further comprising:

storing a record of pixel output profile selections,

wherein selecting the pixel output profile is based at least in part on the stored record.

6. The method of claim 1, wherein the pixel output profile is selected based at least in part on an expected lifespan of a set of subpixels.

7. The method of claim 1, wherein the pixel output profile is configured to achieve a target color of light at a target illumination level.

8. The method of claim 1, wherein the pixel output profile comprises illuminating a first set of subpixels at a first intensity level and illuminating a second set of subpixels at a second intensity level.

9. The method of claim 8, wherein the first set of subpixels are yellow subpixels and the second set of subpixels are blue subpixels.

10. An image processing system, comprising:

an image sensor;

an OLED display;

a profile selection processor configured to select an output profile from among a plurality of pre-stored output profiles based at least in part on a digital representation of a target scene captured by the image sensor; and

an image driver configured to drive the OLED display to display an image based on the selected output profile during a capture of an image of the target scene with the image sensor.

11. The image processing system of claim 10, wherein the profile selection processor is configured to select the output profile based at least in part on a characteristic of the image sensor.

12. The method of claim 11, wherein the characteristic of the image sensor is a level of light sensitivity of the image sensor.

13. The image processing system of claim 10, wherein the profile selection processor is configured to select the output profile based at least in part on one or more characteristics of the target scene from the digital representation.

14. The image processing system of claim 13, wherein the one or more characteristics include one or more of:

a distance of a focal object in the target scene from the image sensor, a location of the focal object in the target scene, ambient light intensity, and ambient light color.

15. The image processing system of claim 10, wherein the output profile is a single image that provides a target color based upon one or more intensity levels assigned to a plurality of subpixels.

16. The image processing system of claim 10, wherein the output profile comprises a series of images that each provide a target color based upon one or more intensity levels assigned to a plurality of subpixels.

17. The image processing system of claim 10, further comprising an image processor configured to adjust an image that has been captured by the image sensor based at least in part on the selected output profile displayed during capture of the image.

18. The image processing system of claim 10, further comprising a memory device configured to store a record of output profile selections, and

wherein the profile selection processor is further configured to select the pixel output profile based at least in part on the stored record.

19. The image processing system of claim 10, wherein the profile selection processor is further configured to select the pixel output profile based at least in part on an expected optical degradation characteristic of a set of subpixels.

20. An image processing system, comprising:

an image sensor;

an OLED display;

a profile selection processor configured to select a first output profile from among a plurality of pre-stored output profiles;

an image driver configured to drive the OLED display to display a plurality of flash images based on the selected output profile, wherein each of the plurality of flash images are respectively displayed during a corresponding operation of capturing an image of the target scene with the image sensor; and

an image processor configured to combine the plurality of captured images into a single image.