公开(公告)号：US11962677B2

公开(公告)日：2024-04-16

申请号：US17720087

申请日：2022-04-13

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Pappalardo ,  Elena Salurso

IPC: H04L7/033 ,  H03L7/06 ,  H04L7/00

CPC classification number: H04L7/0331 ,  H03L7/06 ,  H04L7/0016 ,  H04L7/0054 ,  H04L7/0079

Abstract: A method of processing a data stream includes taking a first number of samples of the data stream using a sampling clock over a first observation window and storing a stored data stream including the first number of samples in a data buffer. A length of the first observation window is determined by a reference clock. A measured number of cycles of the sampling clock are determined from the first number of samples. An error between an expected number of cycles of the sampling clock and the measured number of cycles of the sampling clock in the observation window is measured. The stored data stream corresponding to the first observation window is updated to contain a second number of samples by correcting the first number of samples with the error.

公开(公告)号：US20230336325A1

公开(公告)日：2023-10-19

申请号：US17720087

申请日：2022-04-13

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Pappalardo ,  Elena Salurso

IPC: H04L7/033 ,  H03L7/06

CPC classification number: H04L7/0331 ,  H03L7/06

Abstract: A method of processing a data stream includes taking a first number of samples of the data stream using a sampling clock over a first observation window and storing a stored data stream including the first number of samples in a data buffer. A length of the first observation window is determined by a reference clock. A measured number of cycles of the sampling clock are determined from the first number of samples. An error between an expected number of cycles of the sampling clock and the measured number of cycles of the sampling clock in the observation window is measured. The stored data stream corresponding to the first observation window is updated to contain a second number of samples by correcting the first number of samples with the error.

公开(公告)号：US10484217B2

公开(公告)日：2019-11-19

申请号：US15606979

申请日：2017-05-26

Applicant: STMicroelectronics Design and Application s.r.o. ,  STMicroelectronics S.r.l.

Inventor： Eusebio Dicola ,  Elena Salurso ,  Jan Milsimer

IPC: H04L27/144 ,  H04L27/156 ,  H04L27/10 ,  G01R29/027 ,  H04L1/20 ,  H04L1/18 ,  H04L25/06

Abstract: An occurrence of a first set of n periods of a frequency-shift-keying (FSK)-modulated waveform is counted, where n is an integer number. The n periods of the FSK-modulated waveform in the first set have a first time duration. An occurrence of a second set of n periods of the waveform is counted. The n periods of the waveform in the second set have a second time duration. The first time duration is determined based on the counting of the first set of n periods. The second time duration is determined based on the counting of the second set of n periods. A difference between the first time duration and the second time duration is compared to a threshold. Changes in frequency of the waveform are detected based on the comparing of the difference between the first time duration and the second time duration to the threshold.