Reception device and transmission/reception system including the same

• US 10,044,449 B2
• Filed: 05/09/2017
• Issued: 08/07/2018
• Est. Priority Date: 07/04/2016
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Oh, Kwang Il, Kang, Tae Wook, Kim, Sung Eun, Park, Hyung-Il, Kang, Sung Weon, Lim, In Gi
• Primary Examiner(s): Trandai, Cindy
• Application Number:
  US15/590,652
• Publication Number:
  US 20180006734A1
• Time in Patent Office: 455 Days
• CPC Class Codes: B60R 25/24 using electronic identifiers containing a code not memorised by the user
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: H04B 13/005 Transmission systems in which the medium consists of the human body
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/77 for interrogation
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001

Abstract

The reception device includes a base member, a first electrode, a second electrode, a differential amplifier, and a circuit board. The base member includes a first surface and a second surface. The first electrode is provided on the first surface and configured to receive a reception signal. The second electrode is provided on the second surface and configured to receive a reference voltage. The differential amplifier is configured to amplify a potential difference between the reception signal and the reference voltage. The circuit board is configured to provide a power voltage and a reference ground to the differential amplifier. A distance between the circuit board and the first electrode is smaller than a distance between the circuit board and the second electrode. According to an embodiment of the inventive concept, the amplification performance of the reception device using a human body as a medium is improved.

Claims

1. A reception device for human body communication, the reception device comprising:

a base member including a first outer surface and a second outer surface;

a first electrode provided on the first outer surface and configured to receive a reception signal;

a second electrode provided on the second outer surface and configured to receive a reference voltage having a smaller voltage level than the reception signal;

a differential amplifier configured to amplify a potential difference between the reception signal and the reference voltage to generate an amplification signal;

a circuit board comprising a power plane configured to provide a power voltage to the differential amplifier, a ground plane configured to provide a reference ground to the differential amplifier, and an insulation plane separating the ground plane from the power plane; and

a reception data processing unit configured to correct the amplification signal as restoration data,

wherein a distance between the ground plane and the first electrode is smaller than a distance between the ground plane and the second electrode.

2. The reception device of claim 1, wherein the first electrode is configured to contact a human body and the second electrode is configured to be spaced from the human body.

3. The reception device of claim 1, wherein the first surface and the second surface are spaced apart from each other.

4. The reception device of claim 1, wherein a distance between the first electrode and the ground plane is smaller than a distance between the first electrode and the second electrode.

5. The reception device of claim 1, wherein the circuit board contacts the first electrode.

6. The reception device of claim 5, wherein the circuit board further comprises an insulating layer for electrically insulating the first electrode, the power plane, and the ground plane.

7. The reception device of claim 6, wherein a hole is provided in the circuit board, and the first electrode and the differential amplifier are electrically connected to each other through the hole.

8. The reception device of claim 1, wherein a positive input terminal of the differential amplifier receives the reception signal and a negative input terminal of the differential amplifier receives the reference voltage.

9. The reception device of claim 1, wherein a negative input terminal of the differential amplifier receives the reception signal and a positive input terminal of the differential amplifier receives the reference voltage.

10. The reception device of claim 1, further comprising a display unit configured to receive an image signal based on the amplification signal from the reception data processing unit and display an image.

11. The reception device of claim 10, wherein the base member further comprises a third outer surface facing the first outer surface and the display unit is provided on the third outer surface.

12. The reception device of claim 1, wherein the reception signal is a digital signal.

13. The reception device of claim 1, further comprising a protective layer configured to cover the first electrode or the second electrode.

14. A transmission/reception system for human body communication, the transmission/reception system comprising:

a transmission device configured to provide a transmission signal; and

a reception device configured to receive a reception signal based on the transmission signal,

wherein the reception device comprises;

a base member including a first outer surface and a second outer surface for forming different outer surfaces;

a first electrode provided on the first outer surface and configured to receive the reception signal;

a second electrode disposed on the second outer surface and configured to receive a reference voltage having a smaller voltage level than the reception signal;

a differential amplifier configured to amplify a potential difference between the reception signal and the reference voltage;

a circuit board comprising a power plane configured to provide a power voltage to the differential amplifier, a ground plane configured to provide a reference ground to the differential amplifier, and an insulation plane separating the ground plane form the power plane; and

a reception data processing unit configured to correct the amplification signal as restoration data,

wherein a distance between the ground plane and the first electrode is smaller than a distance between the ground plane and the second electrode.

15. The transmission/reception system of claim 14, wherein the reception data processing unit generates restoration data having the same data as the transmission signal and a clock signal having the same clock as the transmission signal based on the amplification signal.

16. The transmission/reception system of claim 14, wherein the transmission device comprises:

a signal generation unit configured to generate the transmission signal;

a transmission data processing unit configured to provide transmission signal information to the signal generation unit;

a transmission electrode configured to receive the transmission signal from the signal generation unit to provide the received transmission signal to the reception device; and

a transmission device ground configured to provide a reference ground to the signal generation unit.

17. The transmission/reception system of claim 16, wherein a potential value of the reference ground of the reception device or a potential value of the transmission device ground is different from a potential value of a ground surface.

18. The transmission/reception system of claim 16, wherein the first electrode and the transmission electrode are configured to contact a human body and the second electrode is configured to be spaced from the human body.