Radiation receiving system and method, sensing array

Abstract

A radiation receiving system and method, and a sensor array, the radiation receiving system includes: a charge acquisition module configured to generate multiple sets of first charges based on radiation reflected by an object and store them in multiple sets of charge storage units; a loop integration module configured In order to cyclically integrate the multiple groups of first charges stored in the multiple groups of charge storage units to obtain a plurality of cumulative counting results, wherein the cumulative counting results are used to compare with the current integrated voltage of the multiple groups of charge storage units at the end of the integration Collectively indicating the total charge amount of the plurality of sets of first charges generated based on the reflected radiation of the object. Multiple cumulative counting results are obtained by cyclically integrating the first charge, which realizes partial quantification while integrating the circuit, which not only helps to improve the dynamic range of the sensor, but also helps to optimize the circuit area of ​​the sensor.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on October 24, 2018, with the application number 201811244503.8, and the title of the invention is a radiation receiving method and system, and a sensor, the entire contents of which are incorporated by reference in this application . technical field [0002] The present application relates to the field of microelectronics, in particular to a radiation receiving system and method, and a sensing array. Background technique [0003] Dynamic range is one of the important indicators of an image sensor. An image sensor with a high dynamic range is conducive to meeting high-precision measurement requirements and helping to improve the measurement range of the image sensor. Taking the image sensor used in the ranging scene as an example, the current common image sensors mainly include line scan sensors, area array sensors and ITOF sensors. Although the linear scan sen...

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Problems solved by technology

[0004] In order to improve the dynamic range of the image sensor, the following methods can usually be used: changing the integration capacitor value, changing the integration time, changing the column-level gain, and multiple exposures; but these methods cannot meet the requirements of high dynamic range and strong anti-interference at the same time. Requirements for high-precision measurement in ranging scenarios such as large background light, high frame rate, and large array

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