Low-power-consumption high-precision array-type time digital conversion circuit based on multiple VCOs (voltage controlled oscillators)

A time-to-digital conversion, low-power technology, applied in time-to-digital converters, electrical unknown time interval measurement, devices for measuring time intervals, etc. High-precision time resolution, the effect of reducing system power consumption
CN106527098AActive Publication Date: 2017-03-22SOUTHEAST UNIV
5 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2017-03-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a low-power-consumption high-precision array-type time digital conversion circuit based on multiple VCOs (voltage controlled oscillators). The low-power-consumption high-precision array-type time digital conversion circuit comprises an ultrahigh-phase TDC (time-to-digital converter) circuit, a high-phase TDC circuit, a middle-phase TDC circuit, a low-phase TDC circuit and a DFF latch chain, the ultrahigh-phase TDC circuit, the high-phase TDC circuit and the DFF latch chain are in a pixel exclusive circuit and are arranged in a pixel, and the middle-phase TDC circuit and the low-phase TDC circuit are in a global shared circuit and arranged outside the pixel; measuring of time interval is completed through orderly cooperation of the ultrahigh-phase TDC circuit, the high-phase TDC circuit, the middle-phase TDC circuit and the low-phase TDC circuit, and finally the time interval is converted into a numerical value for representation. The low-power-consumption high-precision wide-range four-phase array-type time digital conversion circuit can be used for an array-type detector timing system and can obviously improve resolution of the system and lower power consumption of the system.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a low-power and high-precision array-type time-to-digital conversion circuit based on multiple VCOs (Voltage Controlled Oscillator, voltage-controlled ring oscillation), which is a low-power and high-precision quadcopter that can be applied to infrared sensing readout circuits. A segmented array type time-to-digital conversion circuit, which can effectively improve system resolution and reduce system power consumption without affecting the pixel area. Background technique

[0002] According to the time measurement principle of TOF (Time of Flight), different pixel single-photon sending and receiving intervals in the infrared ROIC (Readout Integrated Circuit) readout circuit correspond to different spatial distances, and the relative distance between each pixel in the pixel array can show the waiting time The contour of the object is measured, and the high-precision, wide-range TDC circuit is the guarantee that the detection sys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More