摘要:
A human body communication system is provided. The human body communication system includes a transmitter and a receiver. The transmitter transmits a frame including a preamble, which is a Manchester-encoded pseudo noise (PN) code, to the human body. The receiver receives the frame from the human body, performs Manchester-decoding on the frame, performs cross-correlation on the decoding result and the PN code, and performs frame synchronization using the cross-correlation result. Accordingly, clock and data recovery performance is improved. Efficient frame synchronization with reduced computation amount can be provided.
摘要:
Provided are a system and method for human body communication using a limited passband. The system includes a transmission frame generating unit for human body communication which generates a transmission frame for human body communication based on data information including user identification (ID) and data scrambled into an orthogonal code generated by the user ID; a symbol mapping unit for symbolizing the generated transmission frame for human body communication according to a predetermined modulating method; a spreading unit for spreading the symbol outputted in the symbol mapping unit; a waveform generating unit for generating a baseband signal whose band is limited to a predetermined range with respect to the data spread in the spreading unit; and a middle band transmitting unit for modulating the baseband signal into a predetermined limited passband signal.
摘要:
Provided are an apparatus for transmitting reference signals for measuring the phase response characteristic of a human body in human body communication, and a system and method for measuring the phase response characteristic of a human body using the same. The apparatus including: a signal generator for generating reference signals for measuring the phase response characteristic of a human body; a signal distributor for distributing the generated reference signals to a transmitting electrode and a frequency converter; the transmitting electrode for applying the reference signals distributed by the signal distributor to a human body; the frequency converter for converting the frequency of the reference signals distributed by the signal distributor into a frequency different from a frequency of a reference signal applied to the human body via the transmitting electrode; and a radio antenna for wirelessly transmitting the frequency-converted reference signal to a free space.
摘要:
There is provided a chair and multimedia player comprising a sound transmission apparatus performing human-body communications. The chair and multimedia player comprise at least one sound transmission apparatus, wherein the sound transmission apparatus is disposed in a surface of the chair and multimedia player to allow a user to hear a sound signal when the user is in contact with or adjacent to the surface, and the sound transmission apparatus generates a composite signal including a sound signal and a demodulation signal restoring only the sound signal from the composite signal and outputs the generated composite signal and demodulation signal into a human body in order to restore the sound signal within the vicinity of the ears of the user.
摘要:
The present invention provides an organic light emitting diode comprising a substrate, a first electrode provided on the substrate, one or more organic material layers provided on the first electrode, a second electrode provided on the organic material layer, and a light extraction layer provided on the top portion of the second electrode, and a method for manufacturing the same. The organic light emitting diode according to the present invention minimizes total internal reflection of the light emitted from a device to improve the light emitting efficiency.
摘要:
The present invention relates to a contact-less power supply magnetically coupled to a battery device having a receiving coil therein, for contact-less charging the battery device, the contact-less power supply having a sending coil array including a plurality of sending coils for inducing a charging power to the receiving coil; and a driving means for detecting a sending coil magnetically coupled to the receiving coil and selectively driving only the detected sending coil.
摘要:
A system, method and apparatus for contact-less charging of battery operated devices is presented. There is a host charger with a power converter and resonant tank circuit and a portable device where the battery is located, with a battery charging control IC. The method obviates the need for a voltage controller in each of both the host and the portable stages, thus decreasing complexity and increasing efficiency. The charging of the battery in the portable device is controlled by a charging controller therein, which is in continual electric communication with the host, whose output power the control IC dynamically monitors and controls. Two embodiments for the charging circuitry in the portable device are presented. In one embodiment component count is minimized but battery charging is not optimized when the battery voltage is very low. In the other embodiment charging efficiency is maximized regardless of the output voltage of the battery, but additional components are utilized.
摘要:
The present invention relates to a wireless charger for a mobile communication terminal, which allows charging a plurality of batteries in a conveniently way without any terminal connection of the batteries to chargers for various mobile communication terminals such as a cellular phone and PDA and also allows intercepting electromagnetic waves while the charger is used, by means of Faraday's law.The wireless charger of the present invention includes a charger body having an electromagnetic wave intercepting means; a charging pad received in the charger body; and at least one battery that is to be charged by means of induced electromotive force generated by the charging pad, wherein the charger body includes a power supply means, a housing having a receiver for receiving the charging pad and connected to the power supply means, and a cover hinged to the housing.
摘要:
An apparatus for realizing a three-dimensional (3D) neural network includes a culture substrate (21) having a 3D structure and a plurality of microelectrodes (22) disposed on the culture substrate (21) in such a manner that neurons are cultured with a 3D structure. The central portion of the culture substrate (21) is shaped in a hemispheric form and a peripheral portion is shaped in a planar form. A plurality of outside connection electrodes (23) are disposed on the peripheral portion so as to be connected to an external device, and a plurality of electrode-connecting lines (24) connecting the microelectrodes (22) to the outside connection electrodes (23) are disposed on the culture substrate (21) as well.
摘要:
The present invention provides an organic light emitting diode comprising a substrate, a first electrode provided on the substrate, one or more organic material layers provided on the first electrode, a second electrode provided on the organic material layer, and a light extraction layer provided on the top portion of the second electrode, and a method for manufacturing the same. The organic light emitting diode according to the present invention minimizes total internal reflection of the light emitted from a device to improve the light emitting efficiency.