Signal processing circuits and methods

Patent metadata

Field	Value
Publication number	US-12476617-B2
Application number	US-202318183930-A
Country	US
Kind code	B2
Filing date	Mar 14, 2023
Priority date	Dec 31, 2020
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

The embodiments of the present disclosure provide a signal processing circuit and a signal processing method. The signal processing circuit may include a control circuit, a switch circuit, an analog circuit, and at least two signal acquisition circuits. The at least two signal acquisition circuits may be configured to acquire at least two-channel target signals. The switch circuit may be configured to control conduction between the at least two signal acquisition circuits and the analog circuit, so that the target signal acquired by a part of the at least two signal acquisition circuits may be transmitted to the analog circuit at the same time. The analog circuit may be configured to process the received target signal. The control circuit may be configured to receive the processed target signal and sample the processed target signal.

First claim

What is claimed is:

1 . A signal processing circuit, comprising a control circuit, a switch circuit, an analog circuit, and at least two signal acquisition circuits, wherein
the at least two signal acquisition circuits are configured to acquire at least two-channel target signals; the switch circuit is configured to control conduction between the at least two signal acquisition circuits and the analog circuit, so that the target signal collected by a part of the at least two signal acquisition circuits is transmitted to the analog circuit at the same time; the analog circuit is configured to process the received target signal; and the control circuit is configured to receive the processed target signal, and sample the processed target signal, wherein each of the at least two-channel target signals includes a target frequency, and a sampling frequency of each of the processed target signal by the control circuit is not less than twice of the target frequency.

2 . The signal processing circuit of claim 1 , wherein the switch circuit includes a plurality of input channels, each of the at least two signal acquisition circuits is connected to an input channel independently, and the switch circuit selects one input channel for conduction between the at least two signal acquisition circuits and the analog circuit based on control signal of the control circuit at the same time.

3 . The signal processing circuit of claim 1 , wherein the control circuit reconstructs each of the target signal based on a sampling result.

4 . The signal processing circuit of claim 1 , wherein the control circuit switches a switch of the switch circuit based on a sum of sampling frequencies of the at least two-channel target signals.

5 . The signal processing circuit of claim 1 , wherein the control circuit switches a switch of the switch circuit based on a preset frequency.

6 . The signal processing circuit of claim 5 , wherein the control circuit obtains strength information of each of the target signal based on a sampling result.

7 . The signal processing circuit of claim 1 , wherein the analog circuit includes a differential amplifier, and the switch circuit is a switch chip with dual outputs.

8 . The signal processing circuit of claim 7 , wherein the analog circuit further includes a filter circuit.

9 . The signal processing circuit of claim 1 , wherein the sampling the processed target signal by the control circuit is performed after the control circuit starts to receive the processed target signal for a time period.

10 . A signal processing method, comprising:
acquiring, by at least two signal acquisition circuits, at least two-channel target signals; controlling, by a switch circuit, conduction between the at least two signal acquisition circuits and the analog circuit, so that the target signal collected by a part of the at least two signal acquisition circuits is transmitted to the analog circuit at the same time; processing, by an analog circuit, the received target signal; and receiving, by the analog circuit, the processed target signal, and sampling, by a control circuit, the processed target signal, wherein each of the at least two target signals includes a target frequency, and a sampling frequency of each of the processed target signal by the control circuit is not less than twice of the target frequency.

11 . The signal processing method of claim 10 , wherein the switch circuit includes a plurality of input channels, and each of the at least two signal acquisition circuits is connected to an input channel independently, and the switch circuit selects one input channel for conduction between the at least two signal acquisition circuits and the analog circuit based on control signal of the control circuit at the same time.

12 . The signal processing method of claim 10 , wherein the method includes:
reconstructing, by the control circuit, each of the target signal based on a sampling result.

13 . The signal processing method of claim 10 , wherein the method includes:
switching, by the control circuit, a switch of the switch circuit based on a sum of sampling frequencies of the at least two-channel target signals.

14 . The signal processing method of claim 10 , wherein the control circuit switches a switch of the switch circuit based on a preset frequency.

15 . The signal processing method of claim 14 , wherein the method includes:
obtaining, by the control circuit, strength information of each of the target signal based on a sampling result.

16 . The signal processing method of claim 10 , wherein the analog circuit includes a differential amplifier, the switch circuit is a switch chip with dual outputs, and the method includes:
amplifying, by the differential amplifier, the received target signal.

17 . The signal processing method of claim 16 , wherein the analog circuit further includes a filter circuit, and the method includes:
performing, by the filter circuit, filtering processing on the received target signal.

18 . The signal processing method of claim 10 , wherein the sampling the processed target signal by the control circuit is performed after the control circuit starts to receive the processed target signal for a time period.

19 . The signal processing method of claim 10 , wherein a frequency of the target signal is within a range of 0.05 Hz-2 KHz.

20 . A non-transitory computer-readable storage medium storing a set of instructions, when executed by at least one processor, causing the at least one processor to execute a signal processing method, the method comprising
acquiring, by at least two signal acquisition circuits, at least two-channel target signals; controlling, by a switch circuit, conduction between the at least two signal acquisition circuits and the analog circuit, so that the target signal collected by a part of the at least two signal acquisition circuits is transmitted to the analog circuit at the same time; processing, by an analog circuit, the received target signal; and receiving, by the analog circuit, the processed target signal, and sampling, by a control circuit, the processed target signal, wherein each of the at least two target signals includes a target frequency, and a sampling frequency of each of the processed target signal by the control circuit is not less than twice of the target frequency.

Assignees

• Shenzhen Shokz Co Ltd

Inventors

• Zhou Xin
• Su Lei
• Zhang Yuxiang
• Li Meiqi
• Qi Xin
• Liao Fengyun

Classifications

• A61B5/0015

  characterised by features of the telemetry system · CPC title

• A61B5/6833

  Adhesive patches · CPC title

• A61B5/725

  using specific filters therefor, e.g. Kalman or adaptive filters (specific diagnostics methods using using bioelectric or biomagnetic signals A61B5/316) · CPC title

• A61B5/7225

  Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316) · CPC title

• H03H2011/0488

  Notch or bandstop filters · CPC title