User communication device executing standby mode, operating method thereof, and human body communication system including the same

Patent metadata

Field	Value
Publication number	US-12225464-B2
Application number	US-202117552766-A
Country	US
Kind code	B2
Filing date	Dec 16, 2021
Priority date	Dec 17, 2020
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

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.

First claim

What is claimed is:

1. A method of operating a user communication device, the method comprising:
receiving a wakeup signal from a stationary communication device over a first human body communication channel, wherein the wakeup signal has 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,
wherein the first human body communication channel is provided by a body of a user of the user communication device;
transmitting a standby signal requesting another user communication device to set an operating mode of the other user communication device to the standby mode, during the wakeup mode;
wherein the transmitting the standby signal requesting the other user communication device to set the operating mode of the other user communication device to the standby mode, during the wakeup mode includes:
transmitting the standby signal to the other user communication device over a second human body communication channel during the wakeup mode, and
wherein the second human body communication channel is provided by a body of a user of the other user communication device.

2. The method of claim 1 , wherein the receiving of the data signal from the stationary communication device over the first human body communication channel during the wakeup mode includes:
transmitting, at the user communication device, a notification signal to the stationary communication device indicating that the user communication device switches to the wakeup mode, during the wakeup mode; and
receiving the data signal from the stationary communication device over the first human body communication channel after transmitting the notification signal.

3. The method of claim 1 , wherein the transmitting the standby signal requesting the another user communication device to set the operating mode of the another user communication device to the standby mode, during the wakeup mode includes:
transmitting the standby signal to the another user communication device over a wireless communication channel during the wakeup mode.

4. The method of claim 1 , wherein the user communication device and the another user communication device are mobile human body communication devices, and
wherein the stationary communication device is a stationary human body communication device.

5. The method of claim 1 , further comprising:
switching from the wakeup mode to the standby mode after processing the data signal.

6. The method of claim 1 , wherein the data signal has a frequency in a high frequency band higher than the low frequency band.

7. The method of claim 1 , wherein the wakeup mode enables both communication for the low frequency band corresponding to the wakeup signal and communication for a high frequency band corresponding to the data signal.

8. A method of operating of a human body communication system which includes a user communication device, another user communication device and a stationary communication device communicating with each other over a first human body communication channel, the method comprising:
transmitting, by the stationary communication device, a wakeup signal to the user communication device over the first human body communication channel, wherein the wakeup signal has a frequency in a low frequency band;
switching, by the user communication device, from a standby mode to a wakeup mode in response to the wakeup signal; and
transmitting, by the stationary communication device, a data signal to the user communication device over the first human body communication channel during the wakeup mode of the user communication device,
wherein the first human body communication channel is provided by a body of a user of the user communication device;
transmitting, by the user communication device, a standby signal requesting the other user communication device to set an operating mode of the other user communication device to the standby mode, during the wakeup mode;
wherein the transmitting the standby signal requesting the other user communication device to set the operating mode of the other user communication device to the standby mode, during the wakeup mode includes:
transmitting the standby signal to the other user communication device over a second human body communication channel during the wakeup mode, and
wherein the second human body communication channel is provided by a body of a user of the other user communication device.

9. The method of claim 8 , further comprising:
executing, by the other user communication device, the standby mode in response to the standby signal.

10. The method of claim 8 , wherein the switching from the standby mode to the wakeup mode in response to the wakeup signal by the user communication device includes:
transmitting, by the user communication device, an identification signal corresponding to identification information of the user communication device to the stationary communication device, and
wherein the transmitting of the data signal to the user communication device over the first human body communication channel during the wakeup mode of the user communication device by the stationary communication device includes:
generating, by the stationary communication device, a security signal including the identification information and data corresponding to the data signal; and
transmitting, by the stationary communication device, the security signal to the user communication device over the first human body communication channel.

11. The method of claim 10 , further comprising:
determining, by the user communication device, whether identification information of the security signal coincides with the identification information of the user communication device; and
processing, by the user communication device, the security signal, when it is determined that the identification information of the security signal coincides with the identification information of the user communication device.

12. The method of claim 10 ,
wherein the transmitting of the security signal to the user communication device over the first human body communication channel by the stationary communication device includes:
transmitting, by the stationary communication device, the security signal to the another user communication device over the second human body communication channel;
determining, by the other user communication device, whether identification information of the security signal coincides with identification information of the other user communication device; and
discarding the security signal based on a determination that the identification information of the security signal does not coincide with the identification information of the other user communication device.

13. The method of claim 10 , wherein the transmitting of the identification signal to the stationary communication device by the user communication device includes:
transmitting, by the user communication device, the identification signal to the stationary communication device over the first human body communication channel or a wireless communication channel.

14. A user communication device comprising:
a first electrode and a second electrode configured to contact a user;
a receiver configured to receive a wakeup signal from a stationary communication device over a human body communication channel, based on that the first electrode contacts contacting the user;
a processor configured to switch an operating mode from a standby mode to a wak

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Hyuk
• Park Hyung-Il
• Kang Tae Wook
• Kim Sung Eun
• Park Mi Jeong
• Byun Kyung Jin
• Oh Kwang Il
• Lee Sukho
• Lee Jae-Jin
• Lim In Gi
• Han Kyuseung

Classifications

• H04B13/005

  Transmission systems in which the medium consists of the human body · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title