公开(公告)号：US20230224603A1

公开(公告)日：2023-07-13

申请号：US17869552

申请日：2022-07-20

Applicant: OmniVision Technologies, Inc.

Inventor： Boyd Fowler ,  Andreas Suess

IPC: H04N5/365 ,  H04N5/3745 ,  G06F17/12

CPC classification number: H04N5/3651 ,  H04N5/37455 ,  G06F17/12

Abstract: A method for estimating a signal charge collected by a pixel of an image sensor includes determining an average bias that depends on the pixel's floating-diffusion dark current and pixel-sampling period. The method also includes determining a signal-charge estimate as the average bias subtracted from a difference between a weighted sum of a plurality of N multiple-sampling values each multiplied by a respective one of a plurality of N sample-weights.

公开(公告)号：US20230087541A1

公开(公告)日：2023-03-23

申请号：US17478237

申请日：2021-09-17

Applicant: OmniVision Technologies, Inc.

Inventor： Wenshou Chen ,  Guansong Liu ,  Boyd Fowler ,  Ramakrishna Kakarala ,  Yiyi Ren

IPC: G06F21/16 ,  G06T1/00 ,  G06F21/60 ,  H04L1/00

Abstract: A method and apparatus for embedding a digital watermark in image content that is not visible to the human eye is performed on single-sensor digital camera images (often called ‘raw’ images) from a pixel-array. The raw image is transformed to generate preprocessed image coefficients, a watermark message is encrypted using a first key; the encrypted watermark message is randomized using a second key to form a watermark; and the watermark is embedded in randomly selected preprocessed image coefficients.

公开(公告)号：US20250030941A1

公开(公告)日：2025-01-23

申请号：US18356316

申请日：2023-07-21

Applicant: OmniVision Technologies, Inc.

Inventor： Boyd Fowler ,  Devang Patel ,  Eiichi Funatsu ,  Andreas Suess ,  Kevin Johnson

IPC: H04N23/66 ,  H04N23/50 ,  H04N23/667 ,  H04N23/80

Abstract: An image sensor comprises: a control block generating a video interface enabled signal, a video interface for receiving the video interface enabled signal, a pixel array for providing a video stream to the video interface, an output port for receiving the video stream from the video interface and outputting the video stream to outside of the image sensor, a stream indicator pin for receiving the video interface enabled signal from the control block when the video interface is receiving the video interface enabled signal from the control block, where a terminal of the video interface receiving the video interface enabled signal is connected to the stream indicator pin by a conductor, and they are sealed in a package of the image sensor.

公开(公告)号：US20250015101A1

公开(公告)日：2025-01-09

申请号：US18347017

申请日：2023-07-05

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Boyd Fowler ,  Kenny Geng

IPC: H01L27/146

Abstract: Color router based photodiodes and integrated pixel circuit. In one embodiment, a plurality of pixels arranged in rows and columns of a pixel array are disposed in a semiconductor material. In some embodiments, each pixel comprises a plurality of photodiodes and a color router covering the plurality of photodiodes. In some embodiments, the plurality of pixels is configured to receive an incoming light through the color router. In some embodiments, the integrated pixel circuit includes a plurality of pixel circuits, where each pixel circuit is associated with a corresponding pixel of the plurality of pixels. In some embodiments, the pixel circuits are configured on a same horizontal plane as the plurality of photodiodes.

公开(公告)号：US11871132B2

公开(公告)日：2024-01-09

申请号：US16870687

申请日：2020-05-08

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Badrinath Padmanabhan ,  Boyd Fowler ,  Alireza Bonakdar ,  Richard Mann

IPC: H04N25/705 ,  H01L27/146 ,  H04N25/75 ,  H04N25/778

CPC classification number: H04N25/705 ,  H01L27/14609 ,  H01L27/14643 ,  H04N25/75 ,  H04N25/778

Abstract: In some embodiments, an imaging system is provided. The imaging system comprises an image sensor, a light source, control circuitry, and function logic. The image sensor comprises a pixel array that includes a plurality of polarization pixel cells and a plurality of time-of-flight pixel cells. The light source is configured to emit light pulses to an object. The control circuitry is coupled to the light source and the pixel array, and is configured to synchronize a timing of the emission of the light pulses with sensing of photons reflected from the object by the plurality of time-of-flight pixel cells to generate depth information. The function logic is configured to determine a set of ambiguous surface normals using signals generated by the plurality of polarization pixel cells, and to disambiguate the set of ambiguous surface normals using the depth information to generate a three-dimensional shape image.

公开(公告)号：US20210352234A1

公开(公告)日：2021-11-11

申请号：US16870687

申请日：2020-05-08

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Badrinath Padmanabhan ,  Boyd Fowler ,  Alireza Bonakdar ,  Richard Mann

IPC: H04N5/369 ,  H04N5/378 ,  H04N5/3745 ,  H01L27/146

Abstract: In some embodiments, an imaging system is provided. The imaging system comprises an image sensor, a light source, control circuitry, and function logic. The image sensor comprises a pixel array that includes a plurality of polarization pixel cells and a plurality of time-of-flight pixel cells. The light source is configured to emit light pulses to an object. The control circuitry is coupled to the light source and the pixel array, and is configured to synchronize a timing of the emission of the light pulses with sensing of photons reflected from the object by the plurality of time-of-flight pixel cells to generate depth information. The function logic is configured to determine a set of ambiguous surface normals using signals generated by the plurality of polarization pixel cells, and to disambiguate the set of ambiguous surface normals using the depth information to generate a three-dimensional shape image.