Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DEVICE FOR CALIBRATING DUTY CYCLE OF CLOCK
Document Type and Number:
WIPO Patent Application WO/2021/134651
Kind Code:
A1
Abstract:
Embodiments of the present application provide a device for calibrating the duty cycle of a clock. The device comprises a crystal oscillator, a buffer module, and a calibration module electrically connected in sequence. The buffer module comprises an adjustable buffer circuit. A first input terminal of the adjustable buffer circuit is electrically connected to the calibration module, a second input terminal of the adjustable buffer circuit is electrically connected to the crystal oscillator, and an output terminal of the adjustable buffer circuit is electrically connected to the calibration module. The number of turned-on switches of a first type and the number of turned-on switches of a second type in the buffer module are related to the duty cycle of a clock. The calibration module is used to send a buffer circuit control signal to the first input terminal of the adjustable buffer circuit. The buffer circuit control signal is used to control the number of turned-on switches of the first type and the number of turned-on switches of the second type in the buffer module. The embodiments of the present application enable the duty cycle of a clock to be accurately calibrated to a preset duty cycle.

Inventors:
WANG YUTAO (CN)
MIN QING (CN)
Application Number:
PCT/CN2019/130872
Publication Date:
July 08, 2021
Filing Date:
December 31, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03K3/017
Foreign References:
US20100225372A12010-09-09
US20110163789A12011-07-07
CN101826860A2010-09-08
CN109962694A2019-07-02
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
Download PDF: