Title:
超高精度デジタルパルス信号発生回路及び方法
Document Type and Number:
Japanese Patent JP7362169
Kind Code:
B2
Abstract:
Disclosed are a circuit and method for generating ultrahigh-precision digital pulse signals. The circuit comprises: a pulse edge control circuit used for delaying a signal on an input pin Input to some extent and accurately controlling positions of a rising edge and a falling edge of the pulse signal to accurately control the width of pulses and generate ultrahigh-precision pulses; a static calibration circuit used for calculating step size information representing the relationship between a work clock period of a system and a delay of delay cells in the pulse edge control circuit when the system is powered on to work, and storing the step size information, wherein the step size information is the number of delay cells through which the signal is propagated and passes within one system clock period; and a dynamic calibration circuit used for dynamically calculating step size information when a rising edge or a falling edge of each pulse in the input pin Input arrives. The method is implemented based on the circuit. The invention has the advantages of being simple in structure, easy to implement, high in precision, and suitable for a wide pulse frequency range.
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Inventors:
Chen Tiger
Konno
Wanjianghua
Konno
Wanjianghua
Application Number:
JP2022552173A
Publication Date:
October 17, 2023
Filing Date:
January 29, 2021
Export Citation:
Assignee:
HUNAN GREAT-LEO MICROELECTRONICS CO., LTD.
International Classes:
H03K5/06; H03K7/08
Domestic Patent References:
| JP2010246092A | ||||
| JP2011139365A |
Foreign References:
| US20140062551 | ||||
| CN110176927A |
Attorney, Agent or Firm:
SK Patent Attorney Corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito