-
公开(公告)号：US20210080245A1
公开(公告)日：2021-03-18
申请号：US16569586
申请日：2019-09-12
Applicant: Apple Inc.
Inventor： Mehmet MUTLU , Michael K. BROWN , Wesley S. SMITH , Orit A. SHAMIR , Richard T. CHEN , Mark T. WINKLER , Miaolei YAN , Richard YEH
Abstract: Aspects of the subject technology relate to an apparatus for self-mixing particulate-matter sensing using a vertical-cavity surface-emitting laser (VCSEL) with extrinsic photodiodes. The apparatus includes a dual-emitting light source disposed on a first chip and to generate a first light beam and a second light beam. The first light beam illuminates a particulate matter (PM), and a light detector extrinsic to the first chip measures the second light beam and variations of the second light beam and generates a self-mixing signal. The variations of the second light beam are caused by a back-scattered light resulting from back-scattering of the first light beam from the PM. The light detector is coupled to the dual-emitting light source. The direction of the second light beam is opposite to the direction of the first light beam, and the second light beam is directed to a sensitive area of the light detector.
-
公开(公告)号：US20200209133A1
公开(公告)日：2020-07-02
申请号：US16725951
申请日：2019-12-23
Applicant: Apple Inc.
Inventor： Miaolei YAN , Gregory B. Arndt , Mehmet Mutlu
IPC: G01N15/06
Abstract: A portable communication device includes one or more optical detectors to generate an analog signal in response to a change in an intra-cavity or an emitted optical power of a light source due to light backscattered from a particle and an application-specific integrated circuit (ASIC). The particle is illuminated via a light source. The ASIC includes an analog-to-digital converter (ADC) circuit, a digital delay circuit, a particle detector module and a processor. The ADC converts the analog signal to a digital signal. The digital delay circuit can store the digital signal for a predetermined or dynamically variable time interval. The particle detector module can analyze the digital signal and can generate an enable signal upon detecting a particle signature in the digital signal. The processor is coupled to the digital delay circuit and can start processing the digital signal in response to the enable signal.
-
Patent Agency Ranking
公开(公告)号：US20190033243A1
公开(公告)日：2019-01-31
申请号：US16048150
申请日：2018-07-27
Applicant: Apple Inc.
Inventor： Miaolei YAN , Roberto M. RIBEIRO , Richard YEH
Abstract: A miniature gas sensing device includes a silicon-based substrate embedded with one or more heating elements. One or more electrodes are disposed on the substrate, and a semiconductor gas sensing layer is deposited over the substrate including over the one or more electrodes. The semiconductor gas sensing layer includes sensing grains forming a porous matrix, and a nanometer-scale barrier oxide layer deposited over the sensing grains. The barrier layer separates gas adsorption from surfaces of the sensing grains, and enables electron tunneling based charge transfer process from the sensing grains to the barrier oxide layer. The barrier oxide layer enhances the sensor stability and promotes signal selectivity by favoring detection of strongly oxidizing and/or reducing gas species over less reactive gas species.
-
公开(公告)号：US20190025271A1
公开(公告)日：2019-01-24
申请号：US16041655
申请日：2018-07-20
Applicant: Apple Inc.
Inventor： Miaolei YAN , Roberto M. RIBEIRO
IPC: G01N33/00
Abstract: A miniature gas sensing device includes a silicon-based substrate embedded with multiple first heating elements. A number of electrodes are disposed on the silicon-based substrate. A gas-sensing layer covers the electrodes. A porous or mesoporous adsorbent layer selectively filters components of a gas mixture other than a target gas and allows the target gas to reach the gas-sensing layer. The first heating elements are operable to periodically regenerate sensing capabilities of at least the gas-sensing layer.
-
公开(公告)号：US20200237940A1
公开(公告)日：2020-07-30
申请号：US16258431
申请日：2019-01-25
Applicant: Apple Inc.
Inventor： Miaolei YAN , Michael K. BROWN , Richard YEH
Abstract: A portable communication device includes an apparatus for environmental sensing. The apparatus includes a housing, one or more environmental sensors and an optical source. The housing includes one or more ports for allowing air flow between the surrounding environment and a cavity of the housing. The environmental sensors are coupled to the housing and can sense an environmental agent included in the air flow. The optical source can illuminate the cavity of the housing to decompose unwanted organic compounds inside the port.
-
公开(公告)号：US20190257803A1
公开(公告)日：2019-08-22
申请号：US16259915
申请日：2019-01-28
Applicant: Apple Inc.
Inventor： Michael K. BROWN , Roham SOLASI , Miaolei YAN
Abstract: A portable communication device includes a first gas sensor, one or more second gas sensors, at least one port and a calibration module. The first gas sensor is disposed on a first hotplate and is enclosed in an enclosure. The one or more second gas sensors are disposed on one or more second hotplates and are also enclosed in the enclosure. The ports can allow flow of air into and out of the enclosure. The second gas sensors are stable gas sensors, which are used by the calibration module to calibrate the first gas sensor.
-
公开(公告)号：US20190120806A1
公开(公告)日：2019-04-25
申请号：US16115478
申请日：2018-08-28
Applicant: Apple Inc.
Inventor： Miaolei YAN , Roberto M. RIBEIRO , Richard YEH
Abstract: A portable communication device includes one or more miniature sensors to sense one or more environmental gases. A processor is coupled to the miniature sensors and is configured to enhance location detection by determining a sensor signal transition. The sensor signal transition is caused by subsequent exposures of at least one of the miniature sensors to environmental gases of a first air composition and a second air composition. The first air composition and the second air composition are respectively associated with a first location and a second location.
-
-
-
-
-
-
Search Results
7
records
(took 0.011 seconds)
