公开(公告)号：US20210314011A1

公开(公告)日：2021-10-07

申请号：US17212252

申请日：2021-03-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Tae Wook KANG ,  Sung Eun KIM ,  HYUNG-IL PARK ,  Jae-Jin LEE ,  Hyuk KIM ,  Kyung Hwan PARK ,  Mi Jeong PARK ,  Kyung Jin BYUN ,  KWANG IL OH ,  In Gi LIM

IPC: H04B1/18 ,  H04B5/00 ,  H04B13/00

Abstract: A hybrid communication device, an operation method thereof, and a communication system including the same are provided. The hybrid communication device includes a contact unit that includes an antenna for receiving a first communication signal and an electrode for receiving a second signal, a switch controller that includes a first switch and a second switch and controls the first switch and the second switch based on a change in capacitance of the electrode, and a signal processing unit that receives at least one of the first communication signal and the second communication signal from the contact unit via the first switch and processes the received signal. The first switch is connected to the contact unit, and the signal processing unit is connected to the first switch.

公开(公告)号：US20220201611A1

公开(公告)日：2022-06-23

申请号：US17552766

申请日：2021-12-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04W52/02 ,  H04B13/00

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.

公开(公告)号：US20200067516A1

公开(公告)日：2020-02-27

申请号：US16542469

申请日：2019-08-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： KWANG IL OH ,  Tae Wook KANG ,  Sung Eun KIM ,  Hyuk KIM ,  Mi Jeong PARK ,  Hyung-IL PARK ,  Kyung Jin BYUN ,  Jae-Jin LEE ,  In Gi LIM

IPC: H03L7/093

Abstract: The inventive concept includes an oscillating circuit, a phase inverting circuit, and a phase detecting circuit. The oscillating circuit generates a first clock to be used to sample an input signal. The phase inverting circuit outputs a second clock based on the first clock. The phase detecting circuit generates a control signal having a first logic value when a phase difference between a phase of the input signal and a phase of the second clock is less than a reference value for a reference time or more. The phase detecting circuit generates the control signal having a second logic value when the phase difference is equal to or greater than the reference value or when the phase difference is less than the reference value for a time shorter than the reference time. The phase inverting circuit inverts the phase of the second clock when a logic value of the control signal changes from the first logic value to the second logic value or when a logic value of the control signal changes from the second logic value to the first logic value.