Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for capturing image data, high dynamic range imaging system and pixel unit

A high dynamic range, pixel unit technology, applied in the field of image sensors, which can solve problems such as reduction of total image resolution

Active Publication Date: 2015-07-15
OMNIVISION TECH INC
View PDF2 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this HDR sensor the total image resolution is reduced compared to a normal full resolution image sensor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for capturing image data, high dynamic range imaging system and pixel unit
  • Method for capturing image data, high dynamic range imaging system and pixel unit
  • Method for capturing image data, high dynamic range imaging system and pixel unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, those skilled in the art will understand that the specific details need not be employed to practice the present invention. In other cases, well-known materials or methods have not been described in detail to avoid obscuring the present invention.

[0018] References to "one embodiment," "an embodiment," "an example," or "an example" throughout this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in the present invention In at least one embodiment. Thus, the appearances of the phrases "in one example", "in an embodiment", "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. In addition, in one or more embodiments or examples, any suitable combinati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method of reading out a pixel includes resetting a photodetector of the pixel. Light incident on the photodetector is then integrated for a single exposure of a single image capture. A floating diffusion node of the pixel is then reset. The floating pixel is set to low conversion gain and a low conversion gain reset signal is sampled from the floating diffusion node. The floating diffusion is set to high conversion gain and a high conversion gain reset signal is sampled from the floating diffusion node. Charge carriers are transferred from the photodetector to the floating diffusion node and a high conversion image signal is then sampled from the floating diffusion node. The floating diffusion is set to low conversion gain. Charge carriers are transferred again from the photodetector to the floating diffusion node and a low conversion image signal is sampled from the floating diffusion node.

Description

[0001] Reference to related applications [0002] This application claims the rights and interests of the U.S. Provisional Application No. 61 / 926,124 filed on January 10, 2014. Technical field [0003] The present invention generally relates to image sensors, and more specifically, the present invention relates to high dynamic range image sensors. Background technique [0004] Standard image sensors have a limited dynamic range of approximately 60dB to 70dB. However, the real-world brightness dynamic range is much larger. Natural scenes usually span the range of 90dB and above. To capture strong light and shadows at the same time, HDR technology has been used in image sensors to increase the captured dynamic range. The most common technique to increase the dynamic range is to merge multiple exposures captured with a standard (low dynamic range) image sensor into a single linear HDR image that has a much larger dynamic range than a single exposure image. [0005] One of the most co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N5/355H04N5/378
CPCH04N5/3745H04N5/3535H04N5/35554H04N5/2355H04N25/59H04N25/623H04N25/771
Inventor J·索尔胡斯维克R·约翰松
Owner OMNIVISION TECH INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com