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公开(公告)号：US20180006734A1
公开(公告)日：2018-01-04
申请号：US15590652
申请日：2017-05-09
Inventor： Kwang IL OH , Tae Wook KANG , Sung Eun KIM , Hyung-IL PARK , Sung Weon KANG , In Gi LIM
CPC classification number: H04B13/005 , B60R25/24 , G06F19/00 , G06F19/30 , G16H50/20 , H04B5/0012 , H04B5/0031 , H04B5/0062 , H04B7/0619
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.
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公开(公告)号：US20170264374A1
公开(公告)日：2017-09-14
申请号：US15419871
申请日：2017-01-30
Inventor： Kwang IL OH , Tae Wook KANG , Sung Eun KIM , Hyung-IL PARK , Sung Weon KANG , In Gi LIM
CPC classification number: H04B13/005 , H04B15/005
Abstract: Provided is a receiver for human body communication, the receiver including a comparator, a clock and data recovery circuit, and resistors or passive elements having a resistance property in power supply and ground connection units of other digital operation components and a power supply and ground connection unit of a printed circuit board (PCB) to remove or suppress a digital noise reflowed into a human body in the receiver and to raise reception performance by amplifying, with a high gain, a very small transmission signal transmitted through the human body causing a very high loss.
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23.发明申请公开(公告)号：US20170149599A1
公开(公告)日：2017-05-25
申请号：US15349214
申请日：2016-11-11
Inventor： Tae Wook KANG , Sung Weon KANG , Hyung-IL PARK , Sung Eun KIM , Jung Bum KIM , Kyung Hwan PARK , Kwang IL OH , In Gi LIM , Byounggun CHOI
CPC classification number: H04L1/203 , H04B1/69 , H04B1/707 , H04B13/005 , H04J11/00
Abstract: Provided is a method for generating a preamble of a transmission signal for human body communication, the method including using a frequency shift code (FSC) of which a length is adjusted according to an operating clock frequency or a transmission rate and a first pseudo random binary sequence (PRBS) code of p chips where p is a natural number to generate a first preamble unit block of n chips where n is a natural number, using the FSC and a second PRBS code of p′ chips to generate a second preamble unit block of n′ chips, and arraying the first preamble unit block consecutively and repeatedly and disposing the second preamble unit block at a next stage to form the preamble of the transmission signal.
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