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Anti-overexposure circuit structure and electronic device using the same

A technology of circuit structure and electronic device, which can be used in measuring devices, re-radiation of electromagnetic waves, parts of color TV, etc.

Active Publication Date: 2020-08-25
LITE ON ELECTRONICS (GUANGZHOU) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conversely, when the exposure time set by the distance measuring device is long, the distant objects in the image become clear, but the near objects will be overexposed

Method used

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  • Anti-overexposure circuit structure and electronic device using the same
  • Anti-overexposure circuit structure and electronic device using the same
  • Anti-overexposure circuit structure and electronic device using the same

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0015] Please refer to figure 1 , which shows a functional block diagram of the electronic device 10 according to an embodiment of the present invention. The electronic device 10 is, for example, a camera device, a distance measuring device or a face recognition device. The electronic device 10 includes an image sensing device 11 and a processor (processor) 12 . The processor 12 is electrically coupled to the image sensing device 11 and can process information provided by the image sensing device 11 . The image sensing device 11 includes a light source 110 , an image sensor 120 and a controller 130 . In one embodiment, the image sensor 120 and the controller 130 can be integrated into a single component. The image sensor 120 and / or the controller 130 is, for example, a physical circuit structure (circuit) formed by semicond...

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Abstract

An anti-overexposure circuit structure and an electronic device using the same are provided. The anti-overexposure circuit structure includes a first capacitor, a second capacitor, a photo diode, a first switch and a control circuit. The photo diode is coupled to the first capacitor and the second capacitor. The first switch is serially connected to the photo diode. The control circuit is coupledto the first switch and configured to: control the first switch to be turned off when SOC of the first capacitor or SOC of the second capacitor is lower than a predetermined level. As a result, it canprevent pixel unit of the electronic device from being overexposed.

Description

technical field [0001] The invention relates to a circuit structure and an electronic device using the circuit, and in particular to an overexposure prevention circuit structure and an electronic device using the circuit. Background technique [0002] An existing image capturing device captures an image of a target, and analyzes the distance between the target and the image capturing device through the captured image. However, within a scene, there may be near objects as well as distant objects. When the exposure time set by the distance measuring device is short, the near objects in the image are clearer, but the far objects are not clear. Conversely, when the exposure time set by the distance measuring device is long, the distant objects in the image become clear, but the near objects will be overexposed. Therefore, how to provide an anti-overexposure mechanism is one of the goals of those skilled in the art. Contents of the invention [0003] The object of the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235H04N5/359H04N5/369
CPCG01S17/08G01S7/497
Inventor 魏守德陈韦志
Owner LITE ON ELECTRONICS (GUANGZHOU) LTD