{"id":"https://openalex.org/W2992835693","doi":"https://doi.org/10.1109/biocas.2019.8919027","title":"PPG and SpO 2 Recording Circuit with Ambient Light Cancellation for Trans-Nail Pulse-Wave Monitoring System","display_name":"PPG and SpO 2 Recording Circuit with Ambient Light Cancellation for Trans-Nail Pulse-Wave Monitoring System","publication_year":2019,"publication_date":"2019-10-01","ids":{"openalex":"https://openalex.org/W2992835693","doi":"https://doi.org/10.1109/biocas.2019.8919027","mag":"2992835693"},"language":"en","primary_location":{"id":"doi:10.1109/biocas.2019.8919027","is_oa":false,"landing_page_url":"https://doi.org/10.1109/biocas.2019.8919027","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5026991651","display_name":"Ryosuke Yabuki","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryosuke Yabuki","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006295728","display_name":"Tetsu Tanaka","orcid":"https://orcid.org/0000-0001-7414-315X"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tetsu Tanaka","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108656036","display_name":"Zhengyang Qian","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Zhengyang Qian","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033109680","display_name":"Kar Mun Lee","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kar Mun Lee","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003610723","display_name":"Bang Du","orcid":"https://orcid.org/0000-0002-8039-7591"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Bang Du","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089867555","display_name":"Filipe Alves Satake","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Filipe Alves Satake","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103829087","display_name":"Tasuku Fukushima","orcid":null},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tasuku Fukushima","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036200957","display_name":"Hisashi Kino","orcid":"https://orcid.org/0000-0001-9348-120X"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hisashi Kino","raw_affiliation_strings":["Frontier Research Institute of Interdisciplinary Sciences, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Frontier Research Institute of Interdisciplinary Sciences, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041535044","display_name":"Takafumi Fukushima","orcid":"https://orcid.org/0000-0003-2303-8178"},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takafumi Fukushima","raw_affiliation_strings":["Graduate School of Engineering, Tohoku University, Sendai, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Tohoku University, Sendai, Japan","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5080266884","display_name":"K. Kiyoyama","orcid":"https://orcid.org/0000-0002-5367-926X"},"institutions":[{"id":"https://openalex.org/I18894396","display_name":"Nagasaki Institute of Applied Science","ror":"https://ror.org/051smb947","country_code":"JP","type":"education","lineage":["https://openalex.org/I18894396"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Koji Kiyoyama","raw_affiliation_strings":["Graduate School of Engineering, Nagasaki Institute of Applied Science, Nagasaki, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Engineering, Nagasaki Institute of Applied Science, Nagasaki, Japan","institution_ids":["https://openalex.org/I18894396"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.4451,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.81513944,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11021","display_name":"ECG Monitoring and Analysis","score":0.9884999990463257,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11700","display_name":"Hemodynamic Monitoring and Therapy","score":0.9779999852180481,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/pulse","display_name":"Pulse (music)","score":0.6117491722106934},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.47468873858451843},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.436413049697876},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.3801882266998291},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3373678922653198},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.32796400785446167},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.2984943687915802},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18883660435676575}],"concepts":[{"id":"https://openalex.org/C2780167933","wikidata":"https://www.wikidata.org/wiki/Q1550652","display_name":"Pulse (music)","level":3,"score":0.6117491722106934},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.47468873858451843},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.436413049697876},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.3801882266998291},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3373678922653198},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.32796400785446167},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2984943687915802},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18883660435676575},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/biocas.2019.8919027","is_oa":false,"landing_page_url":"https://doi.org/10.1109/biocas.2019.8919027","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE Biomedical Circuits and Systems Conference (BioCAS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1490555541","https://openalex.org/W1522130079","https://openalex.org/W1583477879","https://openalex.org/W2294976052","https://openalex.org/W2296682773","https://openalex.org/W2513615686","https://openalex.org/W2810696441","https://openalex.org/W2905618964","https://openalex.org/W2981715796","https://openalex.org/W6629493573","https://openalex.org/W6634738679","https://openalex.org/W6697499872"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2899084033","https://openalex.org/W2902546961","https://openalex.org/W2058676402","https://openalex.org/W2399397734","https://openalex.org/W2292675962","https://openalex.org/W2139871202","https://openalex.org/W2059363835","https://openalex.org/W3127524829","https://openalex.org/W2769410768"],"abstract_inverted_index":{"In":[0,102,181],"order":[1],"to":[2,27,146],"efficiently":[3],"record":[4,28],"the":[5,29,103,120,142,158,165,182,184,199],"photoplethysmography":[6],"(PPG)":[7],"and":[8,36,45,55,86,117,152,164,168,171],"apply":[9],"it":[10,176,179],"for":[11,129],"peripheral":[12],"oxygen":[13],"saturation":[14],"(SpO2)":[15],"measurement,":[16],"we":[17],"developed":[18],"a":[19,66,82,87,194],"trans-nail":[20,200],"pulse-wave":[21,201],"monitoring":[22,202],"system,":[23],"which":[24],"is":[25],"able":[26],"PPG":[30,44,83,104,121,143,166],"signal":[31,122,167],"on":[32],"nail-tip":[33],"without":[34],"discomfort":[35],"any":[37],"effects":[38],"from":[39,149,156],"sweat.":[40],"This":[41],"system":[42],"includes":[43],"SpO2recording":[46],"circuit":[47,95,138,145,185],"(PPG/SpO2-RC)":[48],"with":[49,189],"ambient":[50,150],"light":[51,151],"cancellation":[52],"(ALC)":[53],"function":[54],"was":[56,139,162],"fabricated":[57],"in":[58,198],"1P6M":[59],"0.18":[60],"\u03bcm":[61],"CMOS":[62],"technology.":[63],"It":[64],"has":[65],"small":[67],"area":[68],"of":[69,77,134],"about":[70],"1.7":[71],"mm2.":[72],"The":[73,160],"PPG/SpO2-RC":[74,161],"mainly":[75],"consists":[76],"an":[78,107,126,136],"LED":[79,93],"driver":[80,94],"circuit,":[81,85,106],"readout":[84,105,144],"500":[88,90],"\u00d7":[89],"\u03bcm2photodiode":[91],"(PD).":[92],"selectively":[96],"drives":[97],"three":[98],"different":[99,130],"wavelength":[100],"LEDs.":[101],"86/96":[108],"dB\u03a9":[109],"I/V":[110],"converter,":[111],"20-80":[112],"dB":[113],"programmable":[114],"gain":[115,128],"amplifiers,":[116],"LPF":[118],"ensured":[119],"being":[123],"recorded":[124],"using":[125],"appropriate":[127],"individuals.":[131],"On":[132],"top":[133],"that,":[135],"ALC":[137],"integrated":[140,188],"into":[141],"reduce":[147],"noise":[148],"preventing":[153],"these":[154],"signals":[155],"saturating":[157],"circuit.":[159],"evaluated,":[163],"SpO2were":[169],"measured":[170],"calculated":[172],"successfully,":[173],"proving":[174],"that":[175],"worked":[177],"as":[178,193],"designed.":[180],"future,":[183],"will":[186],"be":[187],"other":[190],"elements":[191],"such":[192],"Bluetooth":[195],"module":[196],"(BLE)":[197],"system.":[203]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3}],"updated_date":"2026-08-19T15:00:24.278416","created_date":"2025-10-10T00:00:00"}
