Pixel detector and distributed front-end analog-to-digital conversion and reading circuit and method thereof

Abstract

The invention discloses a pixel detector and a distributed front-end analog-to-digital conversion and reading circuit and method thereof. The circuit comprises a ramp voltage generator, a ramp voltagebuffer and a plurality of in-pixel analog-to-digital conversion and reading circuits, wherein the ramp voltage generator is connected with the ramp voltage buffer, and the ramp voltage is fanned intoa comparator in each pixel; each in-pixel analog-to-digital conversion and reading circuit comprises a sampling and holding circuit, a comparator and a counter, and the sampling and holding circuit is connected with one input end of the comparator; the other input end of the comparator is connected with the oblique wave voltage buffer; the output end of the comparator is connected with the firstinput end of the counter to control the counting of the counter to be stopped; the second input end of the counter is used for receiving a clock signal, the third input end of the counter receives a counting/shifting control signal, the fourth input end of the counter receives a counter output signal in a previous pixel, and the output end of the counter is connected with the input end of the counter in a next pixel.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows an improved method of converting analog electrical data into digital format that overcomes problems such as reduced sensitivity or increased susceptibility to environmental factors like temperature changes due to heat generated during operation. It also includes improvements related to integrating multiple components together within one chip without adding extra parts at different locations. Overall, this new approach simplifies manufacturing processes while maintaining high performance characteristics.

Problems solved by technology

The technical problem addressed in this patents relates to improving image sensor performance while reducing power consumption without compromising resolution or sensitivity due to limitations such as analog circuits that require high precision components and limited processing capabilities.

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