Time digital converter adjusting method and device

A technology of time digital and adjustment method, which is applied in the direction of time digital converter, device for measuring time interval, electrical unknown time interval measurement, etc. It can solve the problem of low accuracy of TDC time measurement

Active Publication Date: 2019-08-20
SHENYANG NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

[0003] In view of this, the present application provides a time-to-digital converter adjustment method and device to solve the problem of low accuracy of TDC time measurement

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  • Time digital converter adjusting method and device
  • Time digital converter adjusting method and device
  • Time digital converter adjusting method and device

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Embodiment Construction

[0019] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0020] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a time digital converter adjusting method. The method comprises the steps that for each delay chain, after each time the input position of the delay chain is adjusted, N triggersignals are input into the adjusted input position, and the carry number of each trigger signal on the delay chain is acquired; the optimal input position is selected according to the carry number ofeach adjustment to configure the delay chain; after each time the tap position of a main delay chain is adjusted, M trigger signals are input into the optimal input position of the main delay chain to acquire the average of the carry number of each trigger signal on each delay chain; and the optimal tap position is selected according to the average of each adjustment to configure the main delaychain. The input position of each delay chain is changed to achieve in-chain adjustment optimization, and then the tap position of the main delay chain is changed to achieve inter-chain adjustment optimization. The delay of each delay unit in TDC is kept as consistent as possible, and the TDC time measurement accuracy is improved.

Description

technical field [0001] The present application relates to the technical field of Timer Digital Converter (TDC, Timer Digital Converter), in particular to a method and device for adjusting a Timer Digital Converter. Background technique [0002] High-precision time-to-digital converter technology is widely used in time-frequency measurement, satellite navigation, medical treatment and other fields. Taking the Positron Emission Tomography PET (Positron Emission Tomography) system based on TOF (Time of flight) technology as an example, the line of response (LOR, LOR, Line of Response) for calculation. However, due to non-linear errors in the delay time of each delay unit included in the delay chain in the TDC, the delay consistency of each delay unit is relatively poor, thus affecting the time measurement accuracy of the TDC. Contents of the invention [0003] In view of this, the present application provides a time-to-digital converter adjustment method and device to solve...

Claims

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Application Information

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IPC IPC(8): G04F10/00
CPCG04F10/005
Inventor 张如美邱少坤杨龙高鹏叶红杏
Owner SHENYANG NEUSOFT MEDICAL SYST CO LTD
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