INTERLACE IMAGE SENSOR FOR LOW-LIGHT-LEVEL IMAGING

• US 20200137336A1
• Filed: 10/30/2018
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Abandoned Application

• Current Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Original Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Inventors: Adams, Christopher R., McGrath, R. Daniel
• Application Number:
  US16/175,359
• Publication Number:
  US 20200137336A1
• Time in Patent Office: Days
• CPC Class Codes: H04N 25/75 Circuitry for providing, modifying or processing image signals from the pixel array
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source

Abstract

A low light level imaging apparatus comprising an image sensor having a plurality of pixels, where the image sensor is configured to readout in an interlaced manner to a display that allows for real-time viewing of image sensor data by a user or users, where some users may be remote from the low light level imaging apparatus, in the form of a video stream.

Claims

1. A low light level imaging apparatus comprising:

an image sensor comprising a plurality of pixels,

wherein said image sensor is configured for operation at low photon flux,

wherein said image sensor is further configured to readout said pixels in a non-consecutive pattern, and

wherein each frame read out of the image sensor comprises multiple fields.

2. The low light level imaging apparatus of claim 1 further comprising a display configured to receive and display images produced by said image sensor.

3. The low light level imaging apparatus of claim 2 wherein said display is configured to convert said images to a progressive-scan format prior to displaying said images.

4. The low light level imaging apparatus of claim 2 wherein said display is configured to reproduce said images in an interlaced manner.

5. The low light level imaging apparatus of claim 1 wherein said image sensor is configured to output images substantially continuously.

6. The low light level imaging apparatus of claim 1 wherein said low light level imaging apparatus is configured to transmit images captured by said image sensor to a remote device for storage and/or viewing.

7. The low light level imaging apparatus of claim 1 wherein said image sensor is read out in a pattern of row-wise blocks, with one pixel from each block read out as its block is addressed.

8. The low light level imaging apparatus of claim 7 wherein the pixel from each block that is read out as the block is addressed is in the same position in each block.

9. The low light level imaging apparatus of claim 1 wherein said image sensor is read out by row, beginning with all odd-numbered rows in a first refresh cycle and ending with all even-numbered rows in a second refresh cycle.

10. The low light level imaging apparatus of claim 1 wherein said image sensor is read out by row, beginning with all even-numbered rows in a first refresh cycle and ending with all odd-numbered rows in a second refresh cycle.

11. A method of avoiding user discomfort and enhancing perceived framerate while reducing bandwidth requirements during use of a low light level imaging apparatus comprising:

on a low light level imaging apparatus comprising;

an image sensor comprising a plurality of pixels,

wherein said image sensor is configured for operation at low photon flux, and

wherein the pixels are refreshed in no fewer than two refresh cycles,

reading out said pixels in a non-consecutive pattern, thereby producing data corresponding to an image generated by said image sensor;

conveying said data to a display; and

reproducing said image on said display using said data.

12. The method of claim 11 wherein said method is rapidly repeated, thereby producing a video comprising a plurality of images on said display.

13. The method of claim 11 wherein said display is configured to said display is configured to convert said images to a progressive-scan format prior to displaying said images.

14. The method of claim 11 wherein said display is configured to reproduce said images in an interlaced manner.

15. The method of claim 11 further comprising transmitting said information corresponding to an image generated by said image sensor to a remote device for storage and/or viewing

16. The method of claim 11 wherein said image sensor is read out in a pattern of row-wise blocks, with one member of each block read out as its block is addressed.

17. The method of claim 16 wherein the member of each block that is read out as the block is addressed is in the same position in each block.

18. The method of claim 11 wherein said image sensor is read out by row, beginning with all odd-numbered rows in a first refresh cycle and ending with all even-numbered rows in a second refresh cycle.

19. The method of claim 11 wherein said image sensor is read out by row, beginning with all even-numbered rows in a first refresh cycle and ending with all odd-numbered rows in a second refresh cycle.

20. A head-mounted low light level imaging apparatus, the head-mounted low light level imaging apparatus comprising:

a night vision apparatus comprising;

an image sensor comprising a plurality of pixels; and

a display configured to receive and display images produced by said image sensor,

wherein said image sensor is configured for operation at low photon flux,

wherein said image sensor is further configured to readout said pixels in a non-consecutive pattern,

wherein all pixels are refreshed in no fewer than two refresh cycles,

wherein said image sensor is configured to output images substantially continuously, creating a video stream,

wherein persistence of an image on said display is user-adjustable during use, and

wherein said low light level imaging apparatus is configured to transmit images captured by said image sensor to a remote device for storage and/or viewing.