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Imaging device and method

A technology of electronic devices and circuits, applied in the field of imaging devices, capable of solving problems such as limited usability

Active Publication Date: 2020-07-17
SONY SEMICON SOLUTIONS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This places bandwidth and memory demands on the system and limits usability in very dynamic environments, e.g. fast-moving sensors or scenes, fluctuating ambient light, etc.

Method used

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  • Imaging device and method
  • Imaging device and method
  • Imaging device and method

Examples

Experimental program
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Embodiment Construction

[0026] Embodiments described in more detail below provide an electronic device comprising circuitry configured to accumulate a plurality of sub-exposures (sub-exposures, auxiliary exposures) having the same phase data in an associated phase memory in a multi-phase exposure ).

[0027] The electronic device may eg be an image sensor, eg of a phase-shifted time-of-flight (TOF) camera depth imaging system. Electronics may, for example, be provided in each pixel of the image sensor.

[0028] A circuit may include any electronic components, semiconductor components, switches, amplifiers, transistors, processing elements, and the like.

[0029] TOF cameras capture a scene using pulses of light. The illumination is turned on for a short period of time (exposure), and the resulting light pulses illuminating the scene are reflected by objects in the field of view. TOF cameras work by measuring, for example, the phase delay of reflected infrared (IR) light. The phase data may be the...

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PUM

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Abstract

An electronic device comprises circuitry configured to accumulate, in a multiphase exposure, multiple sub-exposures with same phase data in an associated phase memory.

Description

technical field [0001] The present disclosure relates generally to the field of electronic devices, and more particularly to imaging devices and methods for imaging devices. Background technique [0002] In current time-of-flight (ToF) imaging systems, correlation data required to calculate a depth image is sequentially acquired. Usually the number of 4 frames is needed to calculate the depth image. The modulator is usually a 2-tap electro-optic modulator, so that the system can be described as a "2-tap / 4-frame" system. [0003] The main advantage of the "2-tap / 4-frame" pixel architecture is to utilize all photogenerated electrons instead of dumping half the electrons as in a 1-tap pixel, where the dumped electrons represent the opposite sampled signal. In the "2-tap / 4-frame" pixel architecture, the sampling duration is set to half the modulation period: in the first half, all electrons drift to one output, while in the second half, all electrons are transferred to the opp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/36G01S17/89G01S7/491G01S7/4915G01S17/894
CPCG01S17/36G01S7/4915G01S17/894G01S17/89
Inventor 阿尔珀·埃尔坎米希尔·蒂默曼斯沃德·范·德·腾佩尔
Owner SONY SEMICON SOLUTIONS CORP