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公开(公告)号：US20240241532A1
公开(公告)日：2024-07-18
申请号：US18403648
申请日：2024-01-03
发明人： Hua-I LUO , Te-Sheng CHIU
摘要： A multi-port driving and sensing circuit is disclosed and provided for multi-load application. The multi-port driving and sensing circuit has a plurality of bridge switching unit and a controlling unit. A first and second upper switches of each bridge switching unit are commonly connected to a driving voltage terminal, and a first and second lower switches are commonly connected to a reference voltage terminal. When the controlling unit executes a sensing procedure, the first and second upper switches of each bridge switching unit disconnect to the driving voltage terminal and a sensing voltage signal of a load connected to each bridge switching unit is read through a signal reading unit. Therefore, when the sensing voltage signal of the load connected to one of the bridge switching units is read, the sensing voltage signal is not interfered by other sensing voltage signals of the load connected to other bridge switching units.
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公开(公告)号：US12032769B2
公开(公告)日：2024-07-09
申请号：US18361120
申请日：2023-07-28
发明人： Shih-Hao Lin , Ying-Jie Liu , Hsueh-Wei Yang
IPC分类号： G06F3/041
CPC分类号： G06F3/0414
摘要： A force sensing processing method of a touchpad is provided. The comparison values obtained by subtracting the force induction quantities of different frames are used to determine whether the achievement conditions are met. If it is met, a processing step is executed to respond the event to be triggered by the changing trend of the user's force. When the force changes rapidly and the force sensing amount cannot be quickly returned to the originally set trigger threshold value, the force changing trend detected by the comparison values are be used to provide the processing steps in real time, so as to improve the user experience.
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公开(公告)号：US20240160303A1
公开(公告)日：2024-05-16
申请号：US18499004
申请日：2023-10-31
发明人： Chang-Ru CHEN , Tuan-Ying CHANG , Hsueh-Wei YANG
IPC分类号： G06F3/0354 , G06N3/02
CPC分类号： G06F3/03547 , G06N3/02
摘要： A control method of a touchpad is provided. The touchpad has a determination module including a neural network. The determination module is used to determine the type of object. When the user uses the touchpad, the touchpad uses the captured object feature data of the touch object to update the determination module. Therefore, when determining the type of the touch object, the updated determination module can more accurately determine the touch object used by the user, so as to improve the determination accuracy.
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公开(公告)号：US20210182642A1
公开(公告)日：2021-06-17
申请号：US17035556
申请日：2020-09-28
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.
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公开(公告)号：US20210064153A1
公开(公告)日：2021-03-04
申请号：US16990533
申请日：2020-08-11
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.
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公开(公告)号：US10921942B2
公开(公告)日：2021-02-16
申请号：US16656558
申请日：2019-10-17
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.
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公开(公告)号：US10769314B2
公开(公告)日：2020-09-08
申请号：US15891341
申请日：2018-02-07
发明人： Chia-Hsing Lin , Yi-Hsin Tao , I-Hau Yeh
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.
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公开(公告)号：US10691257B2
公开(公告)日：2020-06-23
申请号：US16508256
申请日：2019-07-10
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.
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公开(公告)号：US10148262B1
公开(公告)日：2018-12-04
申请号：US15896075
申请日：2018-02-14
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.
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公开(公告)号：US20180032779A1
公开(公告)日：2018-02-01
申请号：US15398435
申请日：2017-01-04
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.
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