SIGNAL PROCESSING METHOD AND SIGNAL PROCESSING SYSTEM

• US 20140236540A1
• Filed: 07/10/2013
• Published: 08/21/2014
• Est. Priority Date: 02/20/2013
• Status: Abandoned Application

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Lin, Hong-Dun, Chen, Jun-Jie, Lee, Yen-Hsien
• Application Number:
  US13/938,962
• Publication Number:
  US 20140236540A1
• Time in Patent Office: Days
• US Class Current: 702/194
• CPC Class Codes: A61B 5/316 Modalities, i.e. specific diagnostic methods
• CPC Class Codes: A61B 5/347 Detecting the frequency distribution of signals
• CPC Class Codes: A61B 5/7207 of noise induced by motion artifacts

Abstract

A signal processing method and a signal processing system are provided. The signal processing method comprises the following steps. An original signal is provided. The original signal is gradually divided to be corresponding a plurality of stages. One high frequency signal and one low frequency signal whose frequency is lower than that of the high frequency signal are corresponding one of the stages. One of the low frequency signals corresponding to one of the stages is divided into another one of the high frequency signals and another one of the low frequency signals corresponding to the next one of the stages. An adjusting signal is obtained by filtering one of the low frequency signals out of another one of the low frequency signals.

Claims

1. A signal processing method, comprising:

providing an original signal;

gradually dividing the original signal to be corresponding a plurality of stages, wherein one high frequency signal and one low frequency signal whose frequency is lower than that of the high frequency signal are corresponding one of the stages, and one of the low frequency signals corresponding to one of the stages is divided into another one of the high frequency signals and another one of the low frequency signals corresponding to the next one of the stages; and

obtaining an adjusting signal by filtering one of the low frequency signals out of another one of the low frequency signals.

2. The signal processing method according to claim 1, wherein the original signal is gradually divided to be corresponding the stages from low level to high level, and the adjusting signal is obtained by filtering one of the low frequency signals corresponding to one of the stages with high level out of another one of the low frequency signals corresponding to another one of the stages with low level.

3. The signal processing method according to claim 1, wherein the original signal is gradually divided to be corresponding the stages from level 1 to level n, and the adjusting signal is obtained by filtering the low frequency signal corresponding the stage with level 8 out of another low frequency signal corresponding to another stage with level 2.

4. The signal processing method according to claim 1, wherein the ratio of the frequency range of the high frequency signals to that of the corresponding the stages are substantially identical.

5. The signal processing method according to claim 1, wherein the ratio of the frequency range of the low frequency signals to that of the corresponding the stages are substantially identical.

6. The signal processing method according to claim 1, wherein the ratio of the frequency range of each high frequency signal to that of the corresponding the stage is 50%, and the ratio of the frequency range of each low frequency signal to that of the corresponding the stage is 50%.

7. The signal processing method according to claim 1, wherein the original signal is an electrocardiography (EGG) signal.

8. The signal processing method according to claim 7, wherein the another one of the low frequency signals which is filtered is a breathing signal.

9. A signal processing system, comprising:

a providing unit, used for providing an original signal;

a dividing unit, used for gradually dividing the original signal to be corresponding a plurality of stages, wherein one high frequency signal and one low frequency signal whose frequency is lower than that of the high frequency signal are corresponding one of the stages, and one of the low frequency signals corresponding to one of the stages is divided into another one of the high frequency signals and another one of the low frequency signals corresponding to the next one of the stages; and

a calculating unit, used for obtaining an adjusting signal by filtering one of the low frequency signals out of another one of the low frequency signals.

10. The signal processing system according to claim 9, wherein the original signal is gradually divided to be corresponding the stages from low level to high level, and the adjusting signal is obtained by filtering one of the low frequency signals corresponding to one of the stages with high level out of another one of the low frequency signals corresponding to another one of the stages with low level.

11. The signal processing system according to claim 9, wherein the original signal is gradually divided to be corresponding the stages from level 1 to level n, and the adjusting signal is obtained by filtering the low frequency signal corresponding the stage with level 8 out of another low frequency signal corresponding to another stage with level 2.

12. The signal processing system according to claim 9, wherein the ratio of the frequency range of the high frequency signals to that of the corresponding the stages are substantially identical.

13. The signal processing system according to claim 9, wherein the ratio of the frequency range of the low frequency signals to that of the corresponding the stages are substantially identical.

14. The signal processing system according to claim 9, wherein the ratio of the frequency range of each high frequency signal to that of the corresponding the stage is 50%, and the ratio of the frequency range of each low frequency signal to that of the corresponding the stage is 50%.

15. The signal processing system according to claim 9, wherein the original signal is an electrocardiography (EGG) signal.

16. The signal processing system according to claim 15, wherein the another one of the low frequency signals which is filtered is a breathing signal.