Unlock instant, AI-driven research and patent intelligence for your innovation.

Ring Time-to-Digital Converter and Method

A technology of time-to-digital converters, which is applied in the field of circular time-to-digital converters, can solve the problems of large area occupied by time-to-digital converters and complex calculations

Active Publication Date: 2016-10-12
SANCHUAN WISDOM TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a circular time-to-digital converter and its method, the purpose of which is to solve the problem that the time-to-digital converter occupies a large area and the calculation is complicated in the prior art

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ring Time-to-Digital Converter and Method
  • Ring Time-to-Digital Converter and Method
  • Ring Time-to-Digital Converter and Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0038] The present invention proposes a circular time-to-digital converter such as figure 1 As shown, the ring time converter mainly includes:

[0039] A pulse shaper, whose function is to input a pulse of any width, convert the pulse of any width into a pulse output of fixed width, and use it to shape the input start pulse and stop pulse into a fixed width output;

[0040] At least two differential compare units, such as figure 2 As shown, the differential comparison unit is a section of the differential chain, and the differential comparison unit is composed of two buffers, a flip-flop, an AND gate, and an OR gate, and the delay difference between the two buffers is Tr, wherein, delay is a long delay unit, and buf is a short delay unit, which is used to set the set end of...

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

PUM

No PUM Login to View More

Abstract

An annular time-to-digital converter includes a pulse shaper that shapes an input start pulse and an input stop pulse to form fixed-width pulses for output. The annular time-to-digital converter also includes at least two differential comparing units that enable, during matching enabling, triggers of the differential comparing units to set setting ends to 1. A circle counter counts the number of times a pulse is propagated in a loop. A matching enabling logical device generates a matching enabling signal, and sends the generated matching enabling signal to comparing enabling ports of the differential comparing units. At least two in-loop position encoders find a position of a first matched unit according to matching signals sent by the differential comparing units. Result recording registers record the number of circles and in-loop positions when matching occurs. High resolution is realized using a differential chain, and wafer area is saved by the annular design.

Description

technical field [0001] The invention relates to the field of time measurement, in particular to a circular time-to-digital converter and a method thereof. Background technique [0002] A Time-to-Digital Converter (TDC) is a timer that converts time intervals into digital signals. It has a wide range of uses in the field of time measurements, including time-of-flight measurements, phase detectors in phase-locked loops, data converters, high-speed signal capture, demodulators, and other measurement or instrumentation applications. The main goal of designing a TDC is to increase the resolution and provide a larger dynamic range. Since the differential chain can achieve a resolution smaller than the gate-level delay, and the ring TDC occupies a small area and has a large dynamic range, there are two methods for implementing TDC using the differential chain in the prior art: A. Two-step method, first realize the time coarse , and then use the differential chain to measure; B, a...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/50
CPCG04F10/005H03K5/135H03K19/017509H03K21/026H03M1/50
Inventor 宋财华王贤妮徐君
Owner SANCHUAN WISDOM TECH CO LTD