公开(公告)号：US20100176823A1

公开(公告)日：2010-07-15

申请号：US12354722

申请日：2009-01-15

申请人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

发明人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

IPC分类号： G01R27/26

CPC分类号： G06K9/0002 ,  G06K9/00026

摘要： An apparatus and method for detecting the presence of a finger on a fingerprint sensor is disclosed in one embodiment of the invention as including transmitting a probing signal, comprising a series of probing pulses, to a fingerprint sensing area. A response signal, comprising a series of response pulses, is received from the fingerprint sensing area in response to the probing signal. An upper reference signal is generated and finger activity is detected on the fingerprint sensing area by monitoring whether the peaks of the response pulses exceed the reference signal.

摘要翻译： 在本发明的一个实施例中公开了一种用于在指纹传感器上检测手指存在的装置和方法，包括将包括一系列探测脉冲的探测信号发射到指纹感测区域。 响应于探测信号，从指纹感测区域接收包括一系列响应脉冲的响应信号。 通过监视响应脉冲的峰值是否超过参考信号，产生上参考信号并在指纹感测区域检测手指活动。

公开(公告)号：US08278946B2

公开(公告)日：2012-10-02

申请号：US12354722

申请日：2009-01-15

申请人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

发明人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

IPC分类号： G01R27/26

CPC分类号： G06K9/0002 ,  G06K9/00026

摘要： An apparatus and method for detecting the presence of a finger on a fingerprint sensor is disclosed in one embodiment of the invention as including transmitting a probing signal, comprising a series of probing pulses, to a fingerprint sensing area. A response signal, comprising a series of response pulses, is received from the fingerprint sensing area in response to the probing signal. An upper reference signal is generated and finger activity is detected on the fingerprint sensing area by monitoring whether the peaks of the response pulses exceed the reference signal.

摘要翻译： 在本发明的一个实施例中公开了一种用于在指纹传感器上检测手指存在的装置和方法，包括将包括一系列探测脉冲的探测信号发射到指纹感测区域。 响应于探测信号，从指纹感测区域接收包括一系列响应脉冲的响应信号。 通过监视响应脉冲的峰值是否超过参考信号，产生上参考信号并在指纹感测区域检测手指活动。

公开(公告)号：US20110298711A1

公开(公告)日：2011-12-08

申请号：US12792496

申请日：2010-06-02

申请人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Anthony Russo ,  Erik Thompson

发明人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Anthony Russo ,  Erik Thompson

IPC分类号： G09G5/00

CPC分类号： G06F3/0487 ,  G06F3/021 ,  G06F3/0304 ,  G06F3/0338 ,  G06F3/03543 ,  G06F3/03545 ,  G06F3/03547 ,  G06F3/03549 ,  G06F2203/0336 ,  G06F2203/0338 ,  G06K9/0002

摘要： An apparatus is disclosed in a first embodiment of the invention as including a non-conductive substrate providing a first surface onto which a user can apply a fingerprint. A fingerprint sensing circuit is applied to a second surface of the non-conductive substrate opposite the first surface. The fingerprint sensing circuit is capable of sensing a fingerprint through the non-conductive substrate. A navigation device is positioned adjacent to (e.g., below) the non-conductive substrate and is capable of being manipulated by the user through the non-conductive substrate.

摘要翻译： 在本发明的第一实施例中公开了一种装置，其包括提供用户可以在其上施加指纹的第一表面的非导电衬底。 指纹感测电路被施加到与第一表面相对的非导电衬底的第二表面。 指纹感测电路能够通过非导电基板感测指纹。 导航装置定位成与非导电衬底相邻（例如，在下方），并且能够被使用者通过非导电衬底操纵。

公开(公告)号：US07460697B2

公开(公告)日：2008-12-02

申请号：US11184464

申请日：2005-07-19

申请人： Richard A. Erhart ,  Darioush Keyvani ,  Fred G. Benkley, III ,  Jaswinder Jandu

发明人： Richard A. Erhart ,  Darioush Keyvani ,  Fred G. Benkley, III ,  Jaswinder Jandu

IPC分类号： G06K9/00

CPC分类号： G06K9/00026

摘要： Image sensing apparatus includes an image pickup plate disposed generally orthogonally with respect to an expected direction of movement of an object, such as a finger, multiple image drive plates in spaced relation to the image pickup plate to define sensor gaps between respective image drive plates and the image pickup plate, and a reference plate disposed substantially parallel to the image pickup plate. The reference plate is spaced from the image pickup plate to permit common mode noise and coupling to be cancelled and is spaced from the image drive plates to permit a differential image signal to develop between the image pickup plate and the reference plate. A differential amplifier coupled to the image pickup plate and the reference plate provides noise cancellation. The apparatus may further include a comb plate spaced from the reference plate and coupled to a reference potential, such as ground.

摘要翻译： 图像感测装置包括相对于诸如手指的物体（例如手指）的预期运动方向大致垂直设置的图像拾取板，与图像拾取板间隔开的多个图像驱动板，以限定各个图像驱动板之间的传感器间隙，以及 图像拾取板和基本上平行于图像拾取板设置的参考板。 参考板与图像拾取板间隔开以允许共模噪声和耦合被消除，并且与图像驱动板间隔开，以允许在图像拾取板和参考板之间产生差分图像信号。 耦合到图像拾取板和参考板的差分放大器提供噪声消除。 该装置还可以包括与参考板间隔开并耦合到诸如地面的参考电位的梳板。

公开(公告)号：US20130021044A1

公开(公告)日：2013-01-24

申请号：US13614665

申请日：2012-09-13

申请人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

发明人： Erik Jonathon Thompson ,  Gregory Lewis Dean ,  Jaswinder Jandu ,  Richard Alexander Erhart

IPC分类号： G01R27/26

CPC分类号： G06K9/0002 ,  G06K9/00026

摘要： An apparatus and method for detecting the presence of a finger on a fingerprint sensor is disclosed in one embodiment of the invention as including transmitting a probing signal, comprising a series of probing pulses, to a fingerprint sensing area. A response signal, comprising a series of response pulses, is received from the fingerprint sensing area in response to the probing signal. An upper reference signal is generated and finger activity is detected on the fingerprint sensing area by monitoring whether the peaks of the response pulses exceed the reference signal.

摘要翻译： 在本发明的一个实施例中公开了一种用于在指纹传感器上检测手指存在的装置和方法，包括将包括一系列探测脉冲的探测信号发射到指纹感测区域。 响应于探测信号，从指纹感测区域接收包括一系列响应脉冲的响应信号。 通过监视响应脉冲的峰值是否超过参考信号，产生上参考信号并在指纹感测区域检测手指活动。

公开(公告)号：US08005276B2

公开(公告)日：2011-08-23

申请号：US12098370

申请日：2008-04-04

申请人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

发明人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

IPC分类号： G06K9/28

CPC分类号： G06K9/00013 ,  G06K9/0002

摘要： 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 sensing circuit. A quiet ground, separate from and quieter than the digital ground, is provided to ground transmitting elements that are not transmitting the probing signal. Similarly, control logic is provided to connect, to the quiet ground, transmitting elements that are not transmitting the probing signal, while disconnecting, from the quiet ground, transmitting elements that are emitting the probing signal. The quiet ground helps to reduce the adverse effects of parasitic capacitive coupling and noise on the inactive transmitting elements.

摘要翻译： 在本发明的一个实施例中公开了一种用于降低噪声和寄生电容耦合的指纹感测电路，包括多个发送元件以顺序地发射探测信号。 数字地被提供给指纹感测电路中的地面数字部件。 与数字地相分离和安静的地面被提供给不发送探测信号的地面传输元件。 类似地，提供控制逻辑以将与发出探测信号的传输元件从静止地面​​断开的发射元件连接到静音地，发射元件发射探测信号。 安静的地面有助于减少寄生电容耦合和噪声对无效发射元件的不利影响。

公开(公告)号：US07953258B2

公开(公告)日：2011-05-31

申请号：US12098364

申请日：2008-04-04

申请人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

发明人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

IPC分类号： G06K9/28

CPC分类号： G06K9/00013 ,  G06K9/0002 ,  G06K9/00026

摘要： A fingerprint sensor with programmable sensing patterns is disclosed in one embodiment of the invention as including a fingerprint sensing circuit having multiple I/O interconnects. The I/O interconnects are configured to sequentially drive a plurality of fingerprint sensing elements. A memory device may be operably coupled to the fingerprint sensing circuit. A programmable data structure, such as a table, file, character string, numeric value, array, or the like may be stored in the memory device to designate a pattern for driving the fingerprint sensing elements. The fingerprint sensing circuit is configured to drive the fingerprint sensing elements according to the designated pattern. In selected embodiments, the fingerprint sensing elements may include transmitting elements, receiving elements, or a combination thereof.

摘要翻译： 具有可编程感测图案的指纹传感器在本发明的一个实施例中被公开，包括具有多个I / O互连的指纹感测电路。 I / O互连被配置为顺序地驱动多个指纹感测元件。 存储器件可以可操作地耦合到指纹感测电路。 诸如表，文件，字符串，数值，数组等的可编程数据结构可以存储在存储器件中以指定用于驱动指纹感测元件的图案。 指纹感测电路被配置为根据指定的图案来驱动指纹感测元件。 在所选择的实施例中，指纹感测元件可以包括发射元件，接收元件或其组合。

公开(公告)号：US20090252386A1

公开(公告)日：2009-10-08

申请号：US12098370

申请日：2008-04-04

申请人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

发明人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathon Thompson

IPC分类号： G06K9/00

CPC分类号： G06K9/00013 ,  G06K9/0002

摘要： 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 sensing circuit. A quiet ground, separate from and quieter than the digital ground, is provided to ground transmitting elements that are not transmitting the probing signal. Similarly, control logic is provided to connect, to the quiet ground, transmitting elements that are not transmitting the probing signal, while disconnecting, from the quiet ground, transmitting elements that are emitting the probing signal. The quiet ground helps to reduce the adverse effects of parasitic capacitive coupling and noise on the inactive transmitting elements.

摘要翻译： 在本发明的一个实施例中公开了一种用于降低噪声和寄生电容耦合的指纹感测电路，包括多个发送元件以顺序地发射探测信号。 数字地被提供给指纹感测电路中的地面数字部件。 与数字地相分离和安静的地面被提供给不发送探测信号的地面发射元件。 类似地，提供控制逻辑以将与发出探测信号的传输元件从静止地面​​断开的发射元件连接到静音地，发射元件发射探测信号。 安静的地面有助于减少寄生电容耦合和噪声对无效发射元件的不利影响。

公开(公告)号：US20070031011A1

公开(公告)日：2007-02-08

申请号：US11184464

申请日：2005-07-19

申请人： Richard Erhart ,  Darioush Keyvani ,  Fred Benkley ,  Jaswinder Jandu

发明人： Richard Erhart ,  Darioush Keyvani ,  Fred Benkley ,  Jaswinder Jandu

IPC分类号： G06K9/00

CPC分类号： G06K9/00026

摘要： Image sensing apparatus includes an image pickup plate disposed generally orthogonally with respect to an expected direction of movement of an object, such as a finger, multiple image drive plates in spaced relation to the image pickup plate to define sensor gaps between respective image drive plates and the image pickup plate, and a reference plate disposed substantially parallel to the image pickup plate. The reference plate is spaced from the image pickup plate to permit common mode noise and coupling to be cancelled and is spaced from the image drive plates to permit a differential image signal to develop between the image pickup plate and the reference plate. A differential amplifier coupled to the image pickup plate and the reference plate provides noise cancellation. The apparatus may further include a comb plate spaced from the reference plate and coupled to a reference potential, such as ground.

摘要翻译： 图像感测装置包括相对于诸如手指的物体（例如手指）的预期运动方向大致垂直设置的图像拾取板，与图像拾取板间隔开的多个图像驱动板，以限定各个图像驱动板之间的传感器间隙，以及 图像拾取板和基本上平行于图像拾取板设置的参考板。 参考板与图像拾取板间隔开以允许共模噪声和耦合被消除，并且与图像驱动板间隔开，以允许在图像拾取板和参考板之间产生差分图像信号。 耦合到图像拾取板和参考板的差分放大器提供噪声消除。 该装置还可以包括与参考板间隔开并耦合到诸如地面的参考电位的梳板。

公开(公告)号：US20120148122A1

公开(公告)日：2012-06-14

申请号：US13372153

申请日：2012-02-13

申请人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathan Thompson

发明人： Gregory Lewis Dean ,  Richard Alexander Erhart ,  Jaswinder Jandu ,  Erik Jonathan Thompson

IPC分类号： G06K9/00

CPC分类号： G06K9/0002

摘要： An apparatus for reducing noise in fingerprint sensing circuits is disclosed in one embodiment of the invention as including a fingerprint sensing area onto which a user can apply a fingerprint. An analog front end is coupled to the fingerprint sensing area and is configured to generate an analog response signal. An analog-to-digital converter (ADC) samples the analog response signal and converts the sample to a digital value, which may be received by a digital device such as a processor or CPU. To reduce the amount of the noise that is present in the analog response signal and therefore reflected in the digital value, the digital device may be shut down while the ADC is sampling the analog response signal.

摘要翻译： 在本发明的一个实施例中公开了一种用于降低指纹感测电路中的噪声的装置，包括用户可以在其上应用指纹的指纹感测区域。 模拟前端耦合到指纹感测区域并被配置为产生模拟响应信号。 模数转换器（ADC）对模拟响应信号进行采样，并将样本转换为数字值，数字值可由数字设备（如处理器或CPU）接收。 为了减少模拟响应信号中存在的噪声并因此反映在数字值中，数字设备可能在ADC对模拟响应信号采样时关闭。