Abstract: A method and apparatus for tracking input positions via Electric Field Communication (EFC) are provided. The apparatus includes a plurality of receiving electrodes for EFC and a receiver unit. The receiving electrodes detect strengths of input electric fields. The receiver unit compares the strengths of the input electric fields with each other and generates position information regarding the input electric fields.

Abstract: A method of transmitting data performed by a server through a network, a method of transmitting data in an ad hoc network, a server, and a data transmitting system are provided. The method of transmitting data performed by a server through a network includes receiving and storing data from a device of a first user; detecting that a device of a second user accesses the server; selecting data from the stored data based on user information; processing the selected data to be optimized for the device of the second user; and transmitting the processed data to the device of the second user, wherein the server is configured to combine data received from a plurality of devices of the first user and transmit the combined data to the device of the second user.

Abstract: A method and apparatus for tracking input positions via Electric Field Communication (EFC) are provided. The apparatus includes a plurality of receiving electrodes for EFC and a receiver unit. The receiving electrodes detect strengths of input electric fields. The receiver unit compares the strengths of the input electric fields with each other and generates position information regarding the input electric fields.

Abstract: A continuously variable valve timing (CVVT) control device is provided. The CVVT control device includes an engine controlling unit (ECU) configured to output an actual phase angle and a target phase angle of an intake valve or an exhaust valve. The CVVT control device further includes an intellectual motor controller configured to receive the actual phase angle and the target phase angle from the ECU through digital communication in a vehicle. A driving current is generated for adjusting an output torque of a motor based on a phase deviation between the received actual phase angle and target phase angle.

Abstract: A method and apparatus for tracking input positions via Electric Field Communication (EFC) are provided. The apparatus includes a plurality of receiving electrodes for EFC and a receiver unit. The receiving electrodes detect strengths of input electric fields. The receiver unit compares the strengths of the input electric fields with each other and generates position information regarding the input electric fields.

Abstract: A method of transmitting data performed by a server through a network, a method of transmitting data in an ad hoc network, a server, and a data transmitting system are provided. The method of transmitting data performed by a server through a network includes receiving and storing data from a device of a first user; detecting that a device of a second user accesses the server; selecting data from the stored data based on user information; processing the selected data to be optimized for the device of the second user; and transmitting the processed data to the device of the second user, wherein the server is configured to combine data received from a plurality of devices of the first user and transmit the combined data to the device of the second user.

Abstract: A data transmission method, a server and a data transmission system are provided. The data transmission method includes receiving data, storing data, selecting data based on device information, and transmitting the selected data, resulting in a more convenient sharing and utilization of data.

Abstract: A content managing method of a mobile device, a server, and a system is provided. According to the content managing method, when the mobile device enters into a specific region, the mobile device transmits location information of the location of the mobile device and device information of the mobile device to the server, and the server searches for and transmits content information corresponding to the location information to the mobile device. Accordingly, a user can receive the content information simply by entering into a specific location with the mobile device.

Abstract: A continuously variable valve timing (CVVT) control device is provided. The CVVT control device includes an engine controlling unit (ECU) configured to output an actual phase angle and a target phase angle of an intake valve or an exhaust valve. The CVVT control device further includes an intellectual motor controller configured to receive the actual phase angle and the target phase angle from the ECU through digital communication in a vehicle. A driving current is generated for adjusting an output torque of a motor based on a phase deviation between the received actual phase angle and target phase angle.

Abstract: An apparatus and a method for reducing wireless data transmission in a personal area network is configured to generate and transmit a packet including information discriminating between a synchronous channel and a data channel. The apparatus and method discriminate between the synchronous channel and data channel when receiving a packet in order to improve data transmission performance of a human body communication system. The apparatus and the method use a transmission channel whose frequency is lower than an antenna frequency as a synchronous channel, and use a transmission channel whose frequency is higher than the antenna frequency as a data channel.

Abstract: The present invention proposes a method for transmitting data considering a non-contact state of a human body, while selecting a central frequency in various ranges in the human body communication system. To this end, a first embodiment of the present invention proposes a human body communication system in which a central frequency can be simply moved, and specifically, proposes a data transmission apparatus comprising a frequency shifter which shifts the output of a multiplexer into a specified frequency so as to enable the central frequency to be moved. In addition, a second embodiment of the present invention proposes a human body communication system which controls not only central frequency selection and transmission band minimization, but also a data rate, modulation, etc, and thus can perform stable communication in a non-contact state of a human body. Through this, it is possible to maximize the band efficiency, and to transmit data considering a non-contact state of a human body.

Abstract: Provided is a receiving apparatus for processing an analog baseband signal in an information terminal that communicates using a dielectric. The receiving apparatus includes an electrode for receiving an electric-field signal; a first gain adjuster for gain adjustment by amplifying the received signal; a channel selection filter for selecting a signal corresponding to a receive channel bandwidth from the gain-adjusted signal; a second gain adjuster for gain adjustment by amplifying the selected signal; a comparator for converting a signal output from the second gain adjuster into a digital signal; an oversampler for oversampling the digital signal at a frequency fClock higher than a receive channel frequency fSignal; a demodulator for demodulating the oversampled signal; and a clock generator for providing necessary a clock signal to the oversampler and the demodulator.

Abstract: Provided is a receiving apparatus for processing an analog baseband signal in an information terminal that communicates using a dielectric. The receiving apparatus includes an electrode for receiving an electric-field signal; a first gain adjuster for gain adjustment by amplifying the received signal; a channel selection filter for selecting a signal corresponding to a receive channel bandwidth from the gain-adjusted signal; a second gain adjuster for gain adjustment by amplifying the selected signal; a comparator for converting a signal output from the second gain adjuster into a digital signal; an oversampler for oversampling the digital signal at a frequency fClock higher than a receive channel frequency fSignal; a demodulator for demodulating the oversampled signal; and a clock generator for providing necessary a clock signal to the oversampler and the demodulator.

Abstract: According to the present invention, a communication apparatus comprises: a preamble generator which generates a pseudo-random code; a band shaping code generator which generates a band shaping code having a higher frequency than the pseudo-random code; a calculator which performs a calculation of the pseudo-random code and the band shaping code and outputs a preamble obtained through the calculation; and a multiplexer which multiplexes the preamble for synchronization with a second communication apparatus, a header, and data, and outputs a data frame obtained through the multiplexing.

Abstract: Disclosed is an apparatus and method for signal detection according to frequency bands used in an RFID system. The apparatus includes a low-noise amplifier for low-noise amplifying a received signal, a receiver unit for detecting a CW signal and a tag signal, a transmitter unit for frequency up-converting and outputting an input signal, a PLL for generating a frequency signal according to a transmission signal band or a reception signal band, a receiver unit switch for connecting the receiver unit with the low-noise amplifier or a directional coupler, an antennas switch for connecting the antenna with the directional coupler or low-noise amplifier, and a controller unit for controlling a frequency of the frequency signal generated by the PLL, turning off transmission power in a case of an LBT scheme, controlling the receiver unit switch and the antenna switch, and determining if a corresponding channel is an idle channel.

Abstract: A content managing method of a mobile device, a server, and a system is provided. According to the content managing method, when the mobile device enters into a specific region, the mobile device transmits location information of the location of the mobile device and device information of the mobile device to the server, and the server searches for and transmits content information corresponding to the location information to the mobile device. Accordingly, a user can receive the content information simply by entering into a specific location with the mobile device.

Abstract: The present invention proposes a method for transmitting data considering a non-contact state of a human body, while selecting a central frequency in various ranges in the human body communication system. To this end, a first embodiment of the present invention proposes a human body communication system in which a central frequency can be simply moved, and specifically, proposes a data transmission apparatus comprising a frequency shifter which shifts the output of a multiplexer into a specified frequency so as to enable the central frequency to be moved. In addition, a second embodiment of the present invention proposes a human body communication system which controls not only central frequency selection and transmission band minimization, but also a data rate, modulation, etc, and thus can perform stable communication in a non-contact state of a human body. Through this, it is possible to maximize the band efficiency, and to transmit data considering a non-contact state of a human body.

Abstract: A data transmission method, a server and a data transmission system are provided. The data transmission method includes receiving data, storing data, selecting data based on device information, and transmitting the selected data, resulting in a more convenient sharing and utilization of data.

Abstract: A method and apparatus for tracking input positions via Electric Field Communication (EFC) are provided. The apparatus includes a plurality of receiving electrodes for EFC and a receiver unit. The receiving electrodes detect strengths of input electric fields. The receiver unit compares the strengths of the input electric fields with each other and generates position information regarding the input electric fields.

Abstract: A multi-device control method and a related apparatus are provided for transmission of information between communication devices. In the method, a master device shares particular information with a serving device after accessing the serving device through a communication channel, including a human body. Then the master device measures signal strength of each of slave devices using the communication channel. The slave devices include the serving device. The master device selects one of the slave devices as a target device with relatively greater signal strength, and then transmits the information to the target device through the communication channel.