[특허]Oximeter with nulled op-amp current feedback

[미국특허] Oximeter with nulled op-amp current feedback 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H05B-037/02
출원번호	US-0215935 (2002-08-08)
발명자 / 주소	Norris, Mark A.
출원인 / 주소	Datex-Ohmeda, Inc.
대리인 / 주소	Marsh Fischmann & Breyfogle LLP
인용정보	피인용 횟수 : 174 인용 특허 : 6

초록 ▼

대표청구항 ▼

A method of producing a diode drive current in an oximeter includes sensing at least a part of a current passing through the diode and converting the sensed current to a sensed voltage, inputting the sensed voltage to a feedback amplifier for stabilizing the current passing through the diode, and eliminating an offset voltage across inputs of the feedback amplifier. A pulse oximeter includes a diode for emitting light flashes, a feedback amplifier having inputs, a feedback capacitor, and an output, the feedback amplifier stabilizing a current passing through the diode, a nulling amplifier having inputs, a nulling capacitor, and an output, the nulling amplifier charging and discharging the feedback capacitor until the inputs of the feedback amplifier are at a same voltage. The operation may include synchronizing an elimination of input offset voltages of the feedback and nulling amplifiers with on or off state of diode current. rate that is light-passing to visible light and over which at least one of said semiconductor layers has been grown. 7. An LED lamp according to claim 5 wherein said conductor layer is light-passing by being thin. 8. An LED lamp according to claim 1 wherein said metal parts serve as reflectors for light generated by said active region. 9. An LED lamp according to claim 1 wherein said light extraction surfaces are oblique to said reference plane. 10. An LED lamp according to claim 1 wherein there are islands of said upper face defined by said light-extraction surfaces. 11. An LED lamp according to claim 1 including amorphous material at said light-extraction surfaces. 12. An LED lamp according to claim 1 wherein there are cavities that cut through said semiconductor structure. 13. An LED lamp according to claim 1 wherein each of said light-extraction surfaces meets an associated portion of said upper face at an angle measured through semiconductor of at least 90 degrees. 14. An LED lamp according to claim 1 including meandering conductors on said semiconductor structure. 15. An LED lamp according to claim 1 including a heat sink less than 50 microns away from said active region. 16. An LED lamp for generating incoherent visible light, comprising: an inorganic semiconductor structure comprising a lower semiconductor layer and an upper semiconductor layer, said lower and upper semiconductor layers forming a diode and an active region between said layers generating light, said structure having outer side faces surrounding the structure; LED portions within said semiconductor structure, each LED portion provided with an associated conductor for energizing the portion and an associated electrical link (71) in series with the associated conductor, some of said LED portions being faulty and having their associated links deliberately disrupted; electrical connections for energizing several of said LED portions together; and wherein said semiconductor structure has light-extraction surfaces arranged for harvesting light from said semiconductor structure, said light-extraction surfaces being distributed distant from said outer side faces and being inclined to said active region, light generated in the semiconductor structure being diverted at said light-extraction surfaces. 17. An LED lamp according to claim 16 wherein said disrupted links are disrupted fuses. 18. An LED lamp according to claim 16 wherein said disrupted links are on said semiconductor structure. 19. An LED lamp for generating incoherent visible light, comprising: an inorganic semiconductor structure comprising: a lower semiconductor layer having a lower face thereof; an upper semiconductor layer grown over said lower semiconductor layer and having an upper face thereof, said lower and upper semiconductor layers forming a diode; and an active region between said layers generating light a substantial proportion of which propagates parallel to said active region guided by internal reflections at said upper and lower faces, said structure having outer side faces surrounding the structure; a conductor layer in electrical contact with substantially all of the top of said upper semiconductor layer; means harvesting vertical light from said active region; a plurality of spaced-apart conductor parts distributed about the semiconductor structure, each of said conductor parts being in electrical contact with said lower semiconductor layer and positioned between light generating portions of said semiconductor structure as viewed normal to said layers; electrical connection for causing said conductor parts to pass current to said lower semiconductor layer together when the lamp is turned on; and wherein said semiconductor structure is arranged to have several light-extraction surfaces for release of light that is generated under said conductor layer and guided by said reflections, said light-extraction surfaces being distant from said outer side faces, inclined to sai

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Hausmann, Gilbert; O'Neil, Michael P.; Mannheimer, Paul, System and method for practicing spectrophotometry using light emitting nanostructure devices.
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Ollerdessen, Albert L., System and method for preventing sensor misuse.
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Shelton, IV, Frederick E.; Harris, Jason L.; Yates, David C., System for controlling articulation forces.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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[미국특허] Oximeter with nulled op-amp current feedback 원문보기

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