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公开(公告)号：US12225464B2
公开(公告)日：2025-02-11
申请号：US17552766
申请日：2021-12-16
Inventor： Hyuk Kim , Hyung-Il Park , Tae Wook Kang , Sung Eun Kim , Mi Jeong Park , Kyung Jin Byun , Kwang Il Oh , Sukho Lee , Jae-Jin Lee , In Gi Lim , Kyuseung Han
Abstract: Disclosed is an operating method of a user communication device, which includes receiving a wakeup signal from a stationary communication device over a first human body communication channel, the wakeup signal having a frequency in a low frequency band, switching from a standby mode to a wakeup mode in response to the wakeup signal, and receiving a data signal from the stationary communication device over the first human body communication channel during the wakeup mode, and the first human body communication channel is provided by a body of a user of the user communication device.
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公开(公告)号：US11642026B2
公开(公告)日：2023-05-09
申请号：US16794718
申请日：2020-02-19
Inventor： Sung Eun Kim , Kwang Il Oh , Tae Wook Kang , Hyuk Kim , Mi Jeong Park , Hyung-Il Park , Kyung Jin Byun , Jae-Jin Lee , In Gi Lim
CPC classification number: A61B5/0028 , A61B5/117 , A61B5/683 , G06F3/03 , G06F3/044 , A61B2560/0209
Abstract: The human body sensing device includes a contact sensing unit that includes a sensing electrode and a signal electrode, an activation module that senses a contact with a body through the sensing electrode when the sensing electrode and the signal electrode contact the body and outputs a wake-up signal in response to the sensing of the contact, and a human body communication unit that provides a ground voltage to the signal electrode and outputs a data signal to the signal electrode when the wake-up signal from the activation module is received.
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公开(公告)号：US11509403B2
公开(公告)日：2022-11-22
申请号：US16816109
申请日：2020-03-11
Inventor： Tae Wook Kang , Sung Eun Kim , Kwang Il Oh , Hyuk Kim , Mi Jeong Park , Hyung-Il Park , Kyung Jin Byun , Jae-Jin Lee , In Gi Lim
Abstract: Provided are a human body communication device and an operating method of the same. The human body communication device according to an embodiment of the inventive concept includes a first electrode, a second electrode, a transmitting circuit, a receiving circuit, a ground electrode, and a switch. The transmitting circuit generates a first signal in a transmitting mode and transmits the first signal to the first electrode. The receiving circuit receives a second signal from the first electrode in the receiving mode. The receiving circuit includes a differential amplifier that amplifies a difference between a voltage level of a first input terminal depending on the second signal and a voltage level of a second input terminal. The switch electrically connects the second electrode and the ground electrode in the transmitting mode, and electrically connects the second electrode and the second input terminal in the receiving mode.
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公开(公告)号：US11418267B2
公开(公告)日：2022-08-16
申请号：US16784151
申请日：2020-02-06
Inventor： Kwang Il Oh , Sung Eun Kim , Tae Wook Kang , Hyuk Kim , Mi Jeong Park , Hyung-Il Park , Kyung Jin Byun , Jae-Jin Lee , In Gi Lim
Abstract: Provided is a receiver. The receiver according to the inventive concept includes a first filter circuit, a second filter circuit, and an amplifier. The first filter circuit provides a first path for first frequency components below first cutoff frequency of input frequency components and passes second frequency components except for the first frequency components of the input frequency components through second path. The second filter circuit attenuates third frequency components below a second cutoff frequency of the second frequency components. The amplifier amplifies the second frequency components including the attenuated third frequency components.
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