Meta platforms technologies, llc (20240223919). DIGITAL CORRELATED DOUBLE-SAMPLING FOR AN IMAGE SENSOR PIXEL simplified abstract

DIGITAL CORRELATED DOUBLE-SAMPLING FOR AN IMAGE SENSOR PIXEL

Organization Name

meta platforms technologies, llc

Inventor(s)

Song Chen of Redmond WA (US)

Xinqiao Liu of Medina WA (US)

Tsung-Hsun Tsai of Redmond WA (US)

Qing Chao of Redmond WA (US)

Michael Hall of Bellevue WA (US)

David Maurice Moore of Redmond WA (US)

Sharvil Shailesh Talati of Belmont WA (US)

DIGITAL CORRELATED DOUBLE-SAMPLING FOR AN IMAGE SENSOR PIXEL - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240223919 titled 'DIGITAL CORRELATED DOUBLE-SAMPLING FOR AN IMAGE SENSOR PIXEL

The patent application describes systems and methods for a digital image sensor pixel that performs digital correlated double-sampling (d-CDS) operations to compensate for fixed pattern noise induced by comparator propagation delay variation across a digital pixel array.

• The pixel includes data retention logic to selectively lock and unlock the output of a comparator.
• Two pixel memory banks are used to quantize incident light and store digital pixel values.
• The output of the comparator is combined with memory bank write enable signals to convert photodiode charge into digital pixel values.
• The digital pixel values stored in the memory banks can be added or subtracted to generate an FPN compensated digital pixel value.

1. 1. 1. Potential Applications:

This technology can be used in digital cameras, smartphones, security cameras, and other imaging devices to improve image quality by reducing fixed pattern noise.

1. 1. 1. Problems Solved:

This technology addresses the issue of fixed pattern noise induced by comparator propagation delay variation in digital image sensor pixels.

1. 1. 1. Benefits:

- Improved image quality - Reduction of fixed pattern noise - Enhanced performance of imaging devices

1. 1. 1. Commercial Applications:

Title: "Enhanced Image Quality Technology for Digital Cameras" This technology can be commercially applied in the consumer electronics industry for the development of high-quality imaging devices with improved noise reduction capabilities, catering to photography enthusiasts and professionals.

1. 1. 1. Prior Art:

Prior art related to this technology may include research papers, patents, or publications on digital image sensor pixel designs and techniques for reducing fixed pattern noise in imaging devices.

1. 1. 1. Frequently Updated Research:

Researchers in the field of digital imaging technology may be conducting studies on advanced methods for noise reduction in image sensors, which could be relevant to this technology.

1. 1. 1. 1. Questions about Digital Image Sensor Pixel Technology:

1. How does the digital correlated double-sampling (d-CDS) operation help in reducing fixed pattern noise in digital image sensors? 2. What are the potential implications of using two pixel memory banks for quantizing incident light in image sensor pixels?

Original Abstract Submitted

systems and methods of the present disclosure include a digital image sensor pixel configured to perform digital correlated double-sampling (d-cds) operations to compensate for fixed pattern noise (fpn) induced by comparator propagation delay variation across a digital pixel array. the pixel and d-cds operations also support quantization of incident light using two pixel memory banks. the pixel includes data retention logic coupled to selectively lock and unlock the output of a comparator. the output of the comparator is combined with memory bank write enable signals to convert photodiode charge into digital pixel values stored in the two memory banks. the digital pixel values stored in the memory banks may be added or subtracted to generate an fpn compensated digital pixel value.