FPC, 초음파,광학식 지문센서 특허 공개, 국가별 등록된 특허 목록
FPC, 초음파 지문센서 특허 공개
https://patents.justia.com/patent/20200134279
https://patents.google.com/patent/US20200134279A1
ULTRASONIC FINGERPRINT SENSOR
SUMMARY
It is an objective of the present invention to provide an improved ultrasonic fingerprint sensor.
According to an aspect of the present invention, there is provided an ultrasonic fingerprint sensor comprising an array of ultrasonic transducers, one microcontroller unit (MCU) configured for obtaining a configuration of the transducers, and a plurality of parallel mixed-signal ASICs, each configured to be communicatively connected with the MCU and for Analogue-Digital (AD) conversion of analogue signals from the transducers to digital data and comprising a respective data storage for storing said digital data. The sensor also comprises, for each of the mixed-signal ASICs, a plurality of parallel front-end ASICs, each configured to be communicatively connected with said mixed-signal ASIC and for controlling a respective group of the transducers in accordance with the obtained configuration.
According to another aspect of the present invention, there is provided an electronic device comprising host processing circuitry, a screen comprising a display and a cover covering said display, and an embodiment of the ultrasonic fingerprint sensor of the present disclosure comprising a one-dimensional array of ultrasonic transducers peripherally arranged along at least one side of the screen beside the display and below the cover. The MCU is configured to be communicatively connected with the host processing circuitry.
According to another aspect of the present invention, there is provided a method of transferring data of an ultrasonic fingerprint sensor. The sensor comprises an array of ultrasonic transducers, one MCU, and a plurality of parallel mixed-signal ASICs, each communicatively connected with the MCU and comprising a respective a data storage. The sensor also comprises, for each of the mixed-signal ASICs, a plurality of parallel front-end ASICs, each communicatively connected with said mixed-signal ASIC and controlling a respective group of the transducers. The method comprises, in at least one of the mixed-signal ASICs: during a time period while a fingerprint is being captured by the fingerprint sensor, receiving analogue signals of the transducers from at least one of its connected front-end ASICs; converting the analogue signals to digital data; storing the digital data in its data storage; obtaining an indication that the fingerprint is no longer being captured; and sending the digital data via the MCU to processing circuitry of a host.
According to another aspect of the present invention, there is provided a computer program product comprising computer-executable components for causing an ultrasonic fingerprint sensor to perform an embodiment of the method of the present disclosure when the computer-executable components are run on processing circuitry associated with the sensor.
By means of the mixed-signal ASIC comprising a data storage, e.g. a Random-Access Memory (RAM) as exemplified herein, the digital data resulting from the AD conversion of the analogue signals can be stored locally in each of the mixed-signal ASICs before it is forwarded to the host system. Thus, the digital data can be forwarded batch wise at an opportune time, e.g. after the fingerprint has been fully captured, at relatively high data transfer speed, rather than being forwarded continuously in real-time. This reduces power consumption and processing resources needed for the forwarding, and makes the forwarding more flexible. It should also be noted that the digital data is less heavy to forward than the raw data of the analogue signals why the AD conversion within the sensor is advantageous.
It is to be noted that any feature of any of the aspects may be applied to any other aspect, wherever appropriate. Likewise, any advantage of any of the aspects may apply to any of the other aspects. Other objectives, features and advantages of the enclosed embodiments will be apparent from the following detailed disclosure, from the attached dependent claims as well as from the drawings.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to “a/an/the element, apparatus, component, means, step, etc.” are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated. The use of “first”, “second” etc. for different features/components of the present disclosure are only intended to distinguish the features/components from other similar features/components and not to impart any order or hierarchy to the features/components.
Patent History
Publication number: 20200134279
Type: Application
Filed: Oct 23, 2019
Publication Date: Apr 30, 2020
Applicant: FINGERPRINT CARDS AB (GOETEBORG)
Inventor: Roy HANSEN (DRAGOR)
Application Number: 16/661,487
Classifications
International Classification: G06K 9/00 (20060101); G06K 9/20 (20060101); G10K 11/34 (20060101);
US20200134279A1
Application US16/661,487 events
2018-10-29
Priority to SE1851337-4
2019-10-23
Application filed by Fingerprint Cards AB
2019-10-23
Assigned to FINGERPRINT CARDS AB
2020-04-30
Publication of US20200134279A1
Status Pending
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Abstract
An optical biometric imaging arrangement (100) configured to be arranged under an at least partially transparent display panel (102), and configured to capture an image of an object located on an opposite side of the display panel, comprising:an image sensor (108) comprising a photodetector pixel array (109);an array of light redirecting elements (118;802,803;206), each light redirecting element is configured to redirect light onto the pixel array, a color filter (111) arranged between the array of light redirecting elements and the image sensor, the color filter comprising at least two color filter arrays of respective color filter elements (115, 117) being optically transmissive, a first color array comprising first color filter elements and a second color array comprising second color filter elements, the color filter arrays are arranged such that each photodetector pixelis at least partly covered by at least a first and a second color filter element.
재미있는 것은 크루셜텍 특허 US2016/0266695를 언급한 내용이 보인다.
US2016/0266695 describes a fingerprint-sensing display capable of sensing a fingerprint on a display screen. US2016/0266695 discloses that color filter material of a specific wavelength band has been deposited on some of the pixels of an optical sensor array. A first image is acquired using the colored pixels and a second image is acquired using the non-colored pixels. Finally, the images are combined to produce an image with higher resolution.
Although it appears that US2016/0266695 discloses a way to increase the resolution by not reducing the pixel size, there is still room for improvements in this regard.
https://patents.google.com/patent/US20160266695?
http://blog.daum.net/serapeum/7594653
이 글에 정리한 적이 있는데 위 특허는 7~8개로 구성된 연결특허로 구성되어 있는 것으로 알고 있다.
기본적 구조는 현재 상용화된 Camera Image Sensor(Photodiode/Photodetector Pixel Array) + Collimator + microlens Array 와 같다.
FPC Granted Patent
https://www.fingerprints.com/se/teknologi/patents/
p.s
시장 전문가는 너무 늦게 나왔다는 평가를 하고 있다.
초음파는 퀄컴에 의해 광학식은 카메라이미지센서+시준기(Collimater)원리+마이크로 렌즈(micro-Lens)를 이용한 중국 Goodix, 대만 EgisTech이 과점하는 시장에서 신규 공급업체를 받아드릴 여유공간이 남아 있을 것인가 ? 지켜볼 일이다.
애플이 LiDAR센서를 탑재하면서 LiDAR를 이용한 기존 얼굴인식과 더불어 기존에 없던 동작 인식, 눈 초점 인식(Motion-Gesture-Eye Recognition) 응용분야가 COVID-19 시대, 즉 비접촉(Contactless, Touchless) 노멀 시대에 주목받을 것인가 ?도 관심이 있다.
지문으로 구글페이 이용한다...구글-비자 초대형 생체인증 연합
https://www.etnews.com/20200503000034
구글은 호환성 정책에서 규제중인데 기사내용에 가짜뉴스 내용이 보이네요.
"현재 애플과 구글 등은 지문 관련 특허를 다수 출원하고 사람 손가락 용도를 지정해 활용하는 방안을 모색 중이다.
예를 들어 천재지변이 났을 때 비상을 알릴 수 있는 지문은 엄지, 금융 뱅킹 서비스가 멈췄을 때 돈인출 등을 할 수 있는 기능은 두 번째 손가락 등 멀티 지문을 활용한다. 향후 전자여권과 전자신분증에도 생체인증을 접목한 지불결제 시스템 장착을 검토 중이다." 이 부분은 문제가 있어 보이네요. 구글은 아래 호환성 유지정책에서 막고 있고 애플이 유사한 특허가 있고 국내 교수분도 위 기사에서 언급한 부분에 대한 특허를 각국에 등록한 상태로 알고 있는것으로 알고 있음.
물론, 스마트폰이 아닌 지문카드에 손가락별 멀티 지문을 등록하고 어플리케이션을 달리하는 것에 대한 특허 현황은 알아보지 못한 상태. 즉, 스마트폰에서 멀티지문별 어플리케이션을 달리하는 것은 애플등에 의해 선행 특허가 있지만 지문카드는 매체가 다르기에 달리 봐야한다.
왜 ? 지문별로 다른 앱을 실행하지 못하고 소니는 파워버튼 지문센서를 미국에 출하하지 못하나 ?
http://blog.daum.net/serapeum/7594741
Fingerprint Sensor MUST NOT enable 3rd-party applications to distinguish between individual fingerprints.
https://techcrunch.com/2020/04/17/google-card/
https://patentscope.wipo.int/search/en/result.jsf?_vid=P22-K9SLLT-21338
WIPO에 공개, 등록된 검색어 ULTRASONIC FINGERPRINT SENSOR로 검색한 결과인데 기존 퀄컴, InvenSense, 국내 베프스(BEFS)이외에 삼성전자, 삼성전기, BOE, HANGZHOU SILAN MICROELECTRONICS, 한국산업기술대학교(KOREA POLYTECHNIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION), DONGGUAN XINKE TECHNOLOGY RESEARCH AND DEVELOPMENT, NANCHANG O-FILM BIO-IDENTIFICATION TECHNOLOGY(모듈 패키징, 센서 모두), CHENGDU ANRUIXIN TECHNOLOGY, NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECHNOLOGY, SHENZHEN BRANCH OF SAE TECHNOLOGIES (DONGGUAN) RESEARCH AND DEVELOPMENT가있다.