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Apparatus and method for reducing parasitic capacitive coupling and noise in fingerprint sensing circuits 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-009/28
출원번호 US-0098370 (2008-04-04)
등록번호 US8005276 (2011-08-08)
발명자 / 주소
  • Dean, Gregory Lewis
  • Erhart, Richard Alexander
  • Jandu, Jaswinder
  • Thompson, Erik Jonathon
출원인 / 주소
  • Validity Sensors, Inc.
대리인 / 주소
    Greenberg Traurig LLP
인용정보 피인용 횟수 : 66  인용 특허 : 98

초록

A fingerprint sensing circuit for reducing noise and parasitic capacitive coupling is disclosed in one embodiment of the invention as including a plurality of transmitting elements to sequentially emit a probing signal. A digital ground is provided to ground digital components in the fingerprint sen

대표청구항

The invention claimed is: 1. A fingerprint sensing circuit for reducing parasitic capacitive coupling and noise when scanning a fingerprint, the fingerprint sensing circuit comprising:a plurality of transmitting elements configured to sequentially transmit a probing signal;a digital ground to provid

이 특허에 인용된 특허 (98)

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  6. Dean, Gregory Lewis; Erhart, Richard Alexander; Jandu, Jaswinder; Thompson, Erik Jonathon, Apparatus and method for reducing noise in fingerprint sensing circuits.
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  8. Dean, Gregory Lewis; Erhart, Richard Alexander; Jandu, Jaswinder; Thompson, Erik Jonathon, Apparatus and method for reducing parasitic capacitive coupling and noise in fingerprint sensing circuits.
  9. Benkley, III, Fred G., Biometric image sensing.
  10. Benkley, III, Fred G., Biometric image sensing.
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  19. Lien, Ty Bao; Thompson, Erik Jonathon, Button depress wakeup and wakeup strategy.
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  21. Benkley, III, Fred G.; Geoffroy, David Joseph, Display with integrated touch screen and fingerprint sensor.
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  50. Russo, Anthony P., Methods and systems for enrolling biometric data.
  51. Erhart, Richard Alexander; Nelson, Richard Brian, Packaging for fingerprint sensors and methods of manufacture.
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  57. Satyan, Pallavi; Chan, Philip Yiu Kwong, System and method to remove artifacts from fingerprint sensor scans.
  58. Russo, Anthony, System for and method of image reconstruction with dual line scanner using line counts.
  59. Benkley, Fred George; Geoffroy, David Joseph, System for determining the motion of a fingerprint surface with respect to a sensor surface.
  60. Erhart, Richard Alex; Schwab, Frank, System, device and method for securing a user device component by authenticating the user of a biometric sensor by performance of a replication of a portion of an authentication process performed at a remote computing device.
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  62. Gardner, Lawrence C., Unitized ergonomic two-dimensional fingerprint motion tracking device and method.
  63. Gardner, Lawrence C., Unitized ergonomic two-dimensional fingerprint motion tracking device and method.
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  65. Russo, Anthony, User input utilizing dual line scanner apparatus and method.
  66. Lien, Ty Bao; Thompson, Erik Jonathon, Wakeup strategy using a biometric sensor.
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