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1. 发明申请

US20210182642A1 SMART CARD AND CONTROL METHOD THEREOF 有权
公开(公告)号：US20210182642A1
公开(公告)日：2021-06-17
申请号：US17035556
申请日：2020-09-28
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： I-Hau YEH , Ta-Huang LIU , Hsiao-Hua TSAI , Ming-Ho WANG
IPC分类号： G06K19/07 , G06K19/077 , G06K19/04
摘要： A smart card has a light-emitting element, a fingerprint sensor and a microcontroller. An operation of the smart card has a plurality of indication periods to indicate operation statuses of the smart card by the light-emitting element. The control method of the smart card includes generating a light source control signal, controlling a current supplied to the light-emitting element by the microcontroller according to the light source control signal, and decreasing the current supplied to the light-emitting element or stop the current supplied to the light-emitting element during at least one power-saying period in a first indication period of the plurality of indication periods.

2. 发明申请

US20210064153A1 ACTIVE STYLUS 有权
公开(公告)号：US20210064153A1
公开(公告)日：2021-03-04
申请号：US16990533
申请日：2020-08-11
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： I-Hau YEH , HSIAN-HONG WEI , CHIH-YU LIN
IPC分类号： G06F3/038 , G06F3/041 , G06F3/0354
摘要： An active stylus includes a stylus body and a touch sensor. The stylus body includes a first electrode and a pen body. The first electrode is used to send a signal. The pen body extends along a first direction. The touch sensor is provided on or in the pen body and includes a plurality of column electrodes extending along the first direction. There is a first gap between two adjacent column electrodes. Each column electrode has a first sensing electrode and a second sensing electrode. A first end of the first sensing electrode in the first direction has a recess to define a recess area. A second end of the second sensing electrode in the first direction has a projection extending into the recess area. There is a second gap between the projection and the recess. The second gap is smaller than the first gap.

3. 发明授权

US10921942B2 Touch system, its touch device and input device, and its signal transmission method 有权
公开(公告)号：US10921942B2
公开(公告)日：2021-02-16
申请号：US16656558
申请日：2019-10-17
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Han-Wei Chen , Hsuan-Wen Tseng , Yi-Hsin Tao , Chia-Hsing Lin , Chen-Yu Hou , Chieh-Wen Chen
IPC分类号： G06F3/044 , G06F3/041 , G06F3/0354
摘要： A touch system has a touch device and an input device. The touch system executes a first mode and a second mode at different times. In the first mode, the touch device transmits a modulation signal to drive the touch electrodes and to be used as an uplink signal. The input device receives the modulation signal. In the second mode, the touch device receives the downlink signal from the input device. Thus, the touch device does not have to transmit the driving signal and the uplink signal at different times. Then the time is saved for the rest work periods so that every work periods get longer length of time.

4. 发明授权

US10769314B2 Fingerprint sensing integrated circuit device 有权
公开(公告)号：US10769314B2
公开(公告)日：2020-09-08
申请号：US15891341
申请日：2018-02-07
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Chia-Hsing Lin , Yi-Hsin Tao , I-Hau Yeh
IPC分类号： G06F21/85 , G06K9/00 , G06F21/32 , H04L9/32 , G06F21/62
摘要： A fingerprint sensing integrated circuit device includes a fingerprint sensing device, an encryption unit, a multiplexer and a transmission interface. The encryption unit is connected to the fingerprint sensing device. The multiplexer has an output end, a first input end and a second input end. The first input end of the multiplexer is connected to the fingerprint sensing device. The second input end of the multiplexer is connected to the encryption unit. The multiplexer connects the output end to the second end according to a selection signal. The transmission interface is connected to the output end of the multiplexer.

5. 发明授权

US10691257B2 Method of changing identified type of touching object 有权
公开(公告)号：US10691257B2
公开(公告)日：2020-06-23
申请号：US16508256
申请日：2019-07-10
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Tuan-Ying Chang , Hsueh-Wei Yang , Pin-Jung Chung
IPC分类号： G06F3/041 , G06F3/0354
摘要： A method of changing the identified type of a touching object is provided. The touching object is on a touch pad. The method includes the following steps: (A) when the type of the touching object is determined as a palm, determining the type of the touching object again; (B) when the type of the touching object is determined as a finger in step (A), informing the operating system that the touching object has left the touch pad when the touching object does not leave the touch pad; and (C) after step (B) is done, informing the operating system that the type of the touching object is a finger.

6. 发明授权

US10148262B1 Processing circuit of reset signal 有权
公开(公告)号：US10148262B1
公开(公告)日：2018-12-04
申请号：US15896075
申请日：2018-02-14
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Pin-Jung Chung , Tien-Wen Pao , Nan-Jung Liu
IPC分类号： G06F1/24 , H03K17/22 , H03K17/693 , H03K17/567 , H03K17/74 , H03K17/30
摘要： A processing circuit of a reset signal is provided. The processing circuit receives the reset signal via a reset end. The processing circuit includes a multiplexer, an inverter and a switching unit. The multiplexer has an output end, a first input end and a second input end. The multiplexer is utilized for connecting the output end to the first input end or the second input end according to a selection signal. The inverter is coupled to the second input end of the multiplexer. The switching unit is coupled to the reset end for receiving the reset signal and connecting the reset end to the first input end of the multiplexer or the inverter according to the selection signal.

7. 发明申请

US20180032779A1 OPERATING METHOD FOR A FINGERPRINT SENSING DEVICE AND FINGERPRINT SENSING SYSTEM 审中-公开
公开(公告)号：US20180032779A1
公开(公告)日：2018-02-01
申请号：US15398435
申请日：2017-01-04
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Chao-Chi YANG , Jui-Che LIN , Tung-An YAO , Chung-Han CHENG , Chung-An TANG
IPC分类号： G06K9/00
CPC分类号： G06K9/0002
摘要： A fingerprint sensing system has a fingerprint sensing device and a power supply circuit. The fingerprint sensing device has a high-voltage input terminal and a low-voltage input terminal. During scan phases of the fingerprint sensing device, the power supply circuit provides a first voltage to the high voltage input terminal and provides a second voltage to the low voltage input terminal. During the read phases of the fingerprint sensing device, the power supply circuit provides a third voltage to the high voltage input terminal and provides a fourth voltage to the low voltage input terminal. A first voltage difference is between the first voltage and the second voltage. A second voltage difference is between the third voltage and the fourth voltage. The first voltage difference is greater than the second voltage difference.

8. 发明授权

US09613247B2 Sensing method and circuit of fingerprint sensor 有权
公开(公告)号：US09613247B2
公开(公告)日：2017-04-04
申请号：US14960847
申请日：2015-12-07
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Chao-Chi Yang
IPC分类号： G01R27/26 , G06K9/00 , G01D5/24 , H03K17/955
CPC分类号： G06K9/0002 , G01D5/24 , G01R27/26 , G01R27/2605 , G06K9/00006 , H03K17/955
摘要： A sensing method and circuit of fingerprint sensor is disclosed. In a first phase, the sensing method supplies a first to third voltages to an electrode plate to be measured, a read-out circuit of the electrode plate to be measured and a conductor adjacent to the electrode plate to be measured, respectively. In a second phase, the sensing method stops supplying the first to third voltages and supplies voltage to the conductor and connects the electrode plate to be measured to the read-out circuit so the read-out circuit reads out a measurement result of the electrode plate to be measured. According to the sensing method and circuit, the measurement result of the electrode plate to be measured is not affect by capacitors between the electrode plate to be measured and the conductor.

9. 发明授权

US09529020B2 Circuit and method for sensing a differential capacitance 有权
公开(公告)号：US09529020B2
公开(公告)日：2016-12-27
申请号：US14657621
申请日：2015-03-13
申请人： ELAN MICROELECTRONICS CORP.
发明人： Chao-Chi Yang , Shih-How Peng
IPC分类号： G01R27/26 , G01R17/02 , G01D5/24
CPC分类号： G01R17/02 , G01D5/24
摘要： A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.

10. 发明申请

US20160171272A1 SENSING METHOD AND CIRCUIT OF FINGERPRINT SENSOR 有权
标题翻译：指纹传感器的感应方法和电路
公开(公告)号：US20160171272A1
公开(公告)日：2016-06-16
申请号：US14960847
申请日：2015-12-07
申请人： ELAN MICROELECTRONICS CORPORATION
发明人： Chao-Chi Yang
IPC分类号： G06K9/00
CPC分类号： G06K9/0002 , G01D5/24 , G01R27/26 , G01R27/2605 , G06K9/00006 , H03K17/955
摘要： A sensing method and circuit of fingerprint sensor is disclosed. In a first phase, the sensing method supplies a first to third voltages to an electrode plate to be measured, a read-out circuit of the electrode plate to be measured and a conductor adjacent to the electrode plate to be measured, respectively. In a second phase, the sensing method stops supplying the first to third voltages and supplies voltage to the conductor and connects the electrode plate to be measured to the read-out circuit so the read-out circuit reads out a measurement result of the electrode plate to be measured. According to the sensing method and circuit, the measurement result of the electrode plate to be measured is not affect by capacitors between the electrode plate to be measured and the conductor.
摘要翻译：公开了一种指纹传感器的感测方法和电路。在第一阶段中，感测方法分别向要测量的电极板，待测电极板的读出电路和与要测量的电极板相邻的导体提供第一至第三电压。在第二阶段，感测方法停止提供第一至第三电压并向导体提供电压并将待测电极板连接到读出电路，使得读出电路读出电极板的测量结果待测。根据感测方法和电路，要测量的电极板的测量结果不受被测电极板和导体之间的电容器的影响。

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