An Acceleration Technology in CMOS Image Sensor Readout Circuit

Su-ChangXu,; Guo-Zhongjie,; Liu-Shen,; Cao-Xitao,; Han-Xiao,

doi:10.1109/icsict49897.2020.9278219

Cited by 1 publication

(1 citation statement)

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“…Further improving the compensation accuracy can be achieved by shrinking the clk. There are two ways to optimize the clk, either by reducing the size of the transistors inside the D-triggers or using a more integrated process [ 18 , 19 ].…”

Section: Theoretical Analysismentioning

confidence: 99%

Synchronous Driving Method for Stitching Pixel Arrays Based on an Adaptive Correction Technique

Liu,

Guo,

Cheng

et al. 2024

Sensors

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With the application of stitching technology in large-pixel-array CMOS image sensors, the problem of non-synchronized output signals from pixel array bilateral driver circuits has become progressively more serious and has led to the DC perforation of bilateral driver circuits, while conventional clock tree synchronization design methodology does not apply to stitching technology. Therefore, this paper analyses reasons for the inconsistency in the output signals of bilateral driving circuits and proposes a synchronous driving method applicable to stitching pixel arrays based on the idea of on-chip output signal delay detection and calibration. This method detects and corrects the non-synchrony of the row driver output signals on both sides according to changes in the operating environment of the chip. This method is characterized by a simple structure and high reliability. Finally, based on the 55 nm stitching process, simulations are carried out in a CMOS image sensor with a chip area of 77 mm × 84 mm to verify that this method is feasible. This large image sensor with a 150 M pixel array has a frame rate of over 10 FPS.

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Section: Theoretical Analysismentioning

confidence: 99%