[특허]Fingerprint image input apparatus

Fingerprint image input apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-011/00
출원번호	US-0578496 (1995-12-26)
우선권정보	JP-0322657 (1994-12-26)
발명자 / 주소	Fujieda Ichiro (Tokyo JPX) Kaneko Setsuo (Tokyo JPX)
출원인 / 주소	NEC Corporation (Tokyo JPX 03)
인용정보	피인용 횟수 : 49 인용 특허 : 0

초록 ▼

A fingerprint image input apparatus comprises a plane light source for irradiating light having a two-dimensional light distribution and an approximately even luminance, a two-dimensional image sensor capable of allowing the light to pass through, and an optical part for guiding light from the plane light source, having passed the two-dimensional image sensor, to a finger and guiding light reflected at the finger to the photoelectric converting element. The two-dimensional image sensor includes a plurality of pixels arranged in a matrix form. A bias power source for supplying a bias voltage to the individual pixels, a scanning circuit for outputting a scan signal to the pixels and a first detecting circuit for detecting photoelectric data signals from the pixels are connected to those pixels via bias lines, scan lines and data lines. Connected to the bias lines are a signal generator for generating a finger detection signal to detect the contact of a finger with the optical part and a signal detecting circuit for detecting a change in the finger detection signal. A switch controller outputs a control signal in accordance with a finger detection mode and a fingerprint image input mode. According to the control signal, first and second switch circuits control the connection between the signal generator and the second detecting circuit.

대표청구항 ▼

A fingerprint image input apparatus comprising: a plane light source for irradiating light having a two-dimensional light distribution and an approximately even luminance; a two-dimensional image sensor capable of allowing said light to pass through, said two-dimensional image sensor including, a plurality of pixels arranged in a matrix form, each pixel having a photoelectric converting element for outputting a photoelectric signal in response to incident light, and a switch element for transferring said photoelectric signal as a photoelectric data signal; bias lines for applying a bias voltage to said photoelectric converting elements, said bias lines being connected to said pixels; scan lines for transferring a scan signal to said switch elements, said scan lines being connected to said pixels; data lines for transferring photoelectric data signals from said switch elements, said data lines being connected to said pixels; a bias power source for supplying said bias voltage; a scanning circuit for outputting said scan signal; a first detecting circuit for detecting said photoelectric data signal; a signal generator for generating a finger detection signal to detect contact of a finger with said two-dimensional image sensor; a second detecting circuit for detecting a change in said finger detection signal; a switch controller for outputting a control signal in accordance with a finger detection mode and a fingerprint image input mode; a first switch circuit for controlling connection between said bias lines and said second detecting circuit or said bias power source in accordance with said control signal; and a second switch circuit for controlling connection between said signal generator and said bias lines in accordance with said control signal; and an optical part for guiding light from said plane light source, having passed said two-dimensional image sensor, to a finger and guiding light reflected at said finger to said photoelectric converting element.

이 특허를 인용한 특허 (49)

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Fujieda Ichiro,JPX, Fingerprint image entry device of electrostatic capacitance sensing type.
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Bird Neil C.,GBX ; Harkin Gerard F.,GBX, Fingerprint sensing devices and systems incorporating such.
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Teng, Harry H.; Jo, Sung-Chan, High contrast, low distortion optical acquisition system for image capturing.
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Amano, Masashi; Hinoue, Sadahiko; Satoh, Masaharu; Harada, Kouichi, Image reading apparatus.
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Yoon, Jun Sung; Kim, Dong Hun; Joe, Chul Min; Jung, Soon Won; Lee, Hwi Seok; Lee, Byun Jin; Lee, Dong Won; Lee, Taek Ki, Method for extracting fingerprint feature data using ridge orientation model.
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Suzuki,Kiyoshi; Suzuki,Osamu, Method for removing static electricity in fingerprint-reading apparatus, fingerprint reading apparatus and data terminal provided with fingerprint-reading apparatus.
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Burrows, Kenneth; Ford, Stuart J., PTF touch-enabled image generator.
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Miura, Naoto; Nagasaka, Akio; Miyatake, Takafumi, Personal identification device and method.
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Sawano, Tomomi, Pressure activated fingerprint input apparatus.
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Kazuhiro Sasaki JP; Makoto Sasaki JP; Hisashi Aoki JP, Reading apparatus for reading fingerprint.
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Kuriyama Toshihide,JPX ; Suga Michihisa,JPX, Tactile sensor and fingerprint sensor using same.
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Lapsley, Philip D.; Lee, Jonathan Alexander; Pare, Jr., David Ferrin; Hoffman, Ned, Tokenless biometric electronic financial transactions via a third party identicator.
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Cannon, Greg L.; Siegel, William G.; Kilp, David P., Web-enabled live scanner and method for control.
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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
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연합인증

Fingerprint image input apparatus 원문보기

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이 특허를 인용한 특허 (49)

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Fingerprint image input apparatus 원문보기

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이 특허를 인용한 특허 (49)

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