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1.发明授权公开(公告)号：US08278946B2
公开(公告)日：2012-10-02
申请号：US12354722
申请日：2009-01-15
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。
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公开(公告)号：US20100180136A1
公开(公告)日：2010-07-15
申请号：US12354685
申请日：2009-01-15
IPC分类号： G06F1/32
CPC分类号： G06F1/3203 , G06F1/3231 , G06K9/0002 , G06K9/00046 , Y02D10/173
摘要： An apparatus for reducing power consumption 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 integrated circuit communicates with the fingerprint sensing area and is configured to detect finger activity over the fingerprint sensing area. The integrated circuit includes a primary logic portion configured to assume control of the integrated circuit when finger activity is detected over the fingerprint sensing area. The integrated circuit also includes a secondary logic portion configured to assume control of the integrated circuit and shut off power to the primary logic portion when finger activity is not detected over the fingerprint sensing area.
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功耗的装置，包括用户可以在其上应用指纹的指纹感测区域。 集成电路与指纹感测区域通信，并被配置为检测指纹感测区域上的手指活动。 集成电路包括主逻辑部分，配置为当在指纹感测区域上检测到手指活动时，承担集成电路的控制。 集成电路还包括辅助逻辑部分，其被配置为当在指纹感测区域上未检测到手指活动时，对集成电路进行控制并切断对主逻辑部分的电力。
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公开(公告)号：US20090252384A1
公开(公告)日：2009-10-08
申请号：US12098364
申请日：2008-04-04
IPC分类号： G06K9/78
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。
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公开(公告)号：US20130021044A1
公开(公告)日：2013-01-24
申请号：US13614665
申请日：2012-09-13
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。
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5.发明授权Apparatus and method for reducing parasitic capacitive coupling and noise in fingerprint sensing circuits 有权用于减小指纹感测电路中的寄生电容耦合和噪声的装置和方法公开(公告)号：US08005276B2
公开(公告)日：2011-08-23
申请号：US12098370
申请日：2008-04-04
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。
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公开(公告)号：US07953258B2
公开(公告)日：2011-05-31
申请号：US12098364
申请日：2008-04-04
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。
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7.发明申请Apparatus and Method for Reducing Parasitic Capacitive Coupling and Noise in Fingerprint Sensing Circuits 有权指纹传感电路中降低寄生电容耦合和噪声的装置和方法公开(公告)号：US20090252386A1
公开(公告)日：2009-10-08
申请号：US12098370
申请日：2008-04-04
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。
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8.发明申请公开(公告)号：US20100176823A1
公开(公告)日：2010-07-15
申请号：US12354722
申请日：2009-01-15
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。
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9.发明授权Apparatus and method for culling substantially redundant data in fingerprint sensing circuits 有权在指纹感测电路中剔除大量冗余数据的装置和方法公开(公告)号：US08600122B2
公开(公告)日：2013-12-03
申请号：US12354680
申请日：2009-01-15
IPC分类号： G06K9/00
CPC分类号： G06K9/00026
摘要： An apparatus for culling substantially redundant data in a fingerprint sensing circuit is disclosed in one embodiment of the invention as including an input module, a storage module, a comparator module, and a determination module. The input module may receive sets of data samples from an array of fingerprint sensing elements. The sets of data samples may be stored by the storage module. The comparator module may calculate a difference between each data sample from a first-received set, and a corresponding data sample from a second-received set. The determination module may count the number of difference values that exceed a predetermined difference limit, and identify the second set of data samples as redundant if the number of difference values counted is less than a pre-set count limit.
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感测电路中剔除基本上冗余的数据的装置，包括输入模块，存储模块，比较器模块和确定模块。 输入模块可以从指纹感测元件的阵列接收数据样本集合。 数据样本集可以由存储模块存储。 比较器模块可以计算来自第一接收组的每个数据样本与来自第二接收组的对应数据样本之间的差。 确定模块可以对超过预定差值限制的差值的数量进行计数，并且如果计数的差值的数量小于预设计数限制，则将第二组数据样本识别为冗余。
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公开(公告)号：US08593160B2
公开(公告)日：2013-11-26
申请号：US13614665
申请日：2012-09-13
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。
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