[특허]Integrated proximity sensor and light sensor

[미국특허] Integrated proximity sensor and light sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01J-001/44 H04W-052/02 G06F-003/0488 G06F-003/038 G06F-001/32 H04M-001/725 G06F-003/0346 G06F-003/0485 H04M-001/02 G01J-001/42 H04M-001/22
출원번호	US-0010244 (2013-08-26)
등록번호	US-8829414 (2014-09-09)
발명자 / 주소	Fadell, Anthony M. Pantfoerder, Achim
출원인 / 주소	Apple Inc.
대리인 / 주소	Kellogg, David C.
인용정보	피인용 횟수 : 2 인용 특허 : 42

초록 ▼

Apparatuses and methods to sense proximity and to detect light. In one embodiment, an apparatus includes an emitter of electromagnetic radiation and a detector of electromagnetic radiation; the detector has a sensor to detect electromagnetic radiation from the emitter when sensing proximity, and to detect electromagnetic radiation from a source other than the emitter when sensing visible light. The emitter may be disabled at least temporarily to allow the detector to detect electromagnetic radiation from a source other than the emitter, such as ambient light. In one implementation, the ambient light is measured by measuring infrared wavelengths. Also a fence having a non-IR transmissive material disposed between the emitter and the detector to remove electromagnetic radiation emitted by the emitter. Other apparatuses and methods and data processing systems and machine readable media are also described.

대표청구항 ▼

1. An apparatus comprising: an emitter;a detector that detects emissions from the emitter and, simultaneously, detects emissions from at least one source other than the emitter; andcircuitry that distinguishes between the emissions from the emitter and the emissions from the at least one source other than the emitter that are simultaneously detected by the detector, wherein the emissions from the emitter and the emissions from the at least one source other than the emitter that are detected by the detector comprise emissions of electromagnetic radiation that overlap in frequency. 2. The apparatus defined in claim 1 wherein the detector comprises an infrared detector and the emissions from the emitter and the emissions from the at least one source other than the emitter that are detected by the detector comprise infrared light. 3. The apparatus defined in claim 1 wherein the circuitry comprises processing logic that is coupled to the emitter and to the detector and that subtracts the emissions from the at least one source other than the emitter from the emissions from the emitter when the apparatus is operating in a proximity detecting mode. 4. The apparatus defined in claim 1 wherein the circuitry comprises at least one of: time division multiplexer circuitry, timeslice multiplexer circuitry, frequency filter circuitry, and passband filter circuitry. 5. The apparatus defined in claim 1 wherein the emissions from at least one source other than the emitter comprise ambient light, the apparatus further comprising: an additional detector sensitive to the ambient light. 6. A method of operating an apparatus including an emitter and a detector, the method comprising: with the emitter, emitting electromagnetic radiation;with the detector, detecting emissions from the emitter and, simultaneously, detecting emissions from at least one source other than the emitter, wherein the emissions from the emitter and the emissions from the at least one source other than the emitter that are detected with the detector comprise emissions of electromagnetic radiation that overlap in frequency; anddistinguishing between the detected emissions from the emitter and the simultaneously detected emissions from the at least one source other than the emitter. 7. The method defined in claim 6 wherein, with the emitter, emitting the electromagnetic radiation comprises: with the emitter, emitting the electromagnetic radiation in pulses at a given frequency. 8. The method defined in claim 7 wherein distinguishing between the detected emissions from the emitter and the simultaneously detected emissions from the at least one source other than the emitter comprises: with the detector, detecting emissions from at least one source other than the emitter at times between the pulses at the given frequency during which the emitter emits the electromagnetic radiation. 9. The method defined in claim 6 wherein, with the detector, detecting emissions from the emitter comprises detecting infrared radiation emitted by the emitter and reflected by an object that is present within a given distance of the apparatus. 10. The method defined in claim 9 wherein, with the detector, detecting emissions from at least one source other than the emitter comprises detecting ambient light. 11. A method of operating an apparatus including an emitter and a detector, the method comprising: with the emitter, emitting electromagnetic radiation in pulses at a given frequency;with the detector and during the pulses at which the emitter emits the electromagnetic radiation, detecting whether any objects are present within a given distance of the apparatus; andwith the detector and at times between the pulses at which the emitter emits the electromagnetic radiation, measuring the intensity of ambient light. 12. The method defined in claim 11 wherein the electromagnetic radiation emitted by the emitter comprises infrared light. 13. The method defined in claim 11 wherein detecting whether any objects are present within the given distance of the apparatus further comprises: subtracting a first measurement taken by the detector during a first time period between two of the pulses from a second measurement taken by the detector during a second time period during one of the pulses.

이 특허에 인용된 특허 (42) 인용/피인용 타임라인 분석

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Fadell, Anthony M.; Pantfoerder, Achim, Integrated proximity sensor and light sensor.
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이 특허를 인용한 특허 (2) 인용/피인용 타임라인 분석

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[미국특허] Integrated proximity sensor and light sensor 원문보기