# US 2014/0156197 A1 · Method and apparatus for processing signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0156197 A1 - Document ID: US20140156197A1 - Status: Published application - Kind: A1 - Application number: 14/075,504 - Filed: 2013-11-08 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Jong Pal Kim - Web page: https://patentgrep.com/patent/US20140156197A1 ## CPC - A61B 5/7207: {of noise induced by motion artifacts} - A61B 5/347: Detecting the frequency distribution of signals - G16B 5/00: ICT specially adapted for modelling or simulations in systems biology, e.g. gene-regulatory networks, protein interaction networks or metabolic networks - G16B 45/00: ICT specially adapted for bioinformatics-related data visualisation, e.g. displaying of maps or networks - G16B 50/00: ICT programming tools or database systems specially adapted for bioinformatics - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G16B: BIOINFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR GENETIC OR PROTEIN-RELATED DATA PROCESSING IN COMPUTATIONAL MOLECULAR BIOLOGY ## Abstract A method of processing a signal may include receiving an input signal including a motion artifact, determining a filter parameter based on a frequency component of a motion-based signal analogous to the motion artifact, and filtering the input signal using a filter having the determined filter parameter. ## Claims ### Claim 1 A method of processing a signal, the method comprising: receiving an input signal including a motion artifact; determining a filter parameter based on a frequency component of a motion-based signal analogous to the motion artifact; and filtering the input signal using a filter having the determined filter parameter. ### Claim 2 (depends on 1) The method of claim 1, wherein the determining comprises: converting the motion-based signal to a frequency domain; identifying a frequency band having a highest power based on a power per frequency band in the motion-based signal converted to the frequency domain; and determining the filter parameter based on the identified frequency band. ### Claim 3 (depends on 2) The method of claim 2, wherein the determining further comprises selecting a filter parameter corresponding to the identified frequency band from predetermined filter parameters as the filter parameter. ### Claim 4 (depends on 1) The method of claim 1, wherein the determining comprises: identifying a frequency band having a highest mean value or a highest integral value based on a mean value or an integral value per frequency band in the motion-based signal using a filter bank; and determining the filter parameter based on the identified frequency band. ### Claim 5 (depends on 4) The method of claim 4, wherein the determining further comprises selecting a filter parameter corresponding to the identified frequency band from predetermined filter parameters as the filter parameter. ### Claim 6 (depends on 1) The method of claim 1, wherein the determining comprises determining the filter parameter based on a relative frequency band difference between frequency components of the input signal and the motion-based signal. ### Claim 7 (depends on 1) The method of claim 1, wherein the determining comprises determining the filter parameter using a function relation between the frequency component of the motion-based signal and the filter parameter. ### Claim 8 (depends on 1) The method of claim 1, wherein the determining comprises determining either one or both of an order of the filter and a coefficient of the filter based on the frequency component of the motion-based signal. ### Claim 9 (depends on 1) The method of claim 1, wherein the filtering comprises filtering the input signal adaptively using the motion-based signal and the filter. ### Claim 10 A method of processing a signal, the method comprising: determining a filter parameter based on a frequency component of an input signal and a frequency component of a motion-based signal; applying the determined filter parameter to a filter; and removing a motion artifact from the input signal using the filter; wherein the motion-based signal is similar to the motion artifact. ### Claim 11 An apparatus for processing a signal, the apparatus comprising: an input signal receiving unit configured to receive an input signal including a motion artifact; a parameter determining unit configured to determine a filter parameter based on a frequency component of a motion-based signal analogous to the motion artifact; and an input signal filtering unit configured to filter the input signal using a filter having the determined filter parameter. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the parameter determining unit is further configured to: convert the motion-based signal to a frequency domain; identify a frequency band having a highest power based on a power per frequency band in the motion-based signal converted to the frequency domain; and determine a filter parameter based on the identified frequency band. ### Claim 13 (depends on 12) The apparatus of claim 12, wherein the parameter determining unit is further configured to select a filter parameter corresponding to the identified frequency band from predetermined filter parameters as the filter parameter. ### Claim 14 (depends on 11) The apparatus of claim 11, wherein the parameter determining unit is further configured to identify a frequency band having a highest mean value or a highest integral value based on a mean value or an integral value per frequency band in the motion-based signal using a filter bank; and determine the filter parameter based on the identified frequency band. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the parameter determining unit is further configured to select a filter parameter corresponding to the identified frequency band from predetermined filter parameters as the filter parameter. ### Claim 16 (depends on 11) The apparatus of claim 11, wherein the parameter determining unit is further configured to determine the filter parameter based on a relative frequency band difference between frequency components of the input signal and the motion-based signal. ### Claim 17 (depends on 11) The apparatus of claim 11, wherein the parameter determining unit is further configured to determine the filter parameter using a function relation between the frequency component of the motion-based signal and the filter parameter. ### Claim 18 (depends on 11) The apparatus of claim 11, wherein the parameter determining unit is further configured to determine either one or both of an order of the filter and a coefficient of the filter based on the frequency component of the motion-based signal. ### Claim 19 (depends on 11) The apparatus of claim 11, wherein the input signal filtering unit is further configured to filter the input signal adaptively using the motion-based signal and the filter. ### Claim 20 (depends on 11) The apparatus of claim 11, further comprising a motion-based signal receiving unit configured to receive the motion-based signal analogous to the motion artifact.