| Patent application number | Description | Published |
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| 20080287061 | COMMUNICATION APPARATUS - The present invention provides a communication apparatus being in directly contact with a human body and using the human body as a transmission channel for data communication. The communication apparatus attached to the human body transmits a signal in the form of a current, receives a signal transmitted from another communication apparatus attached to the human body therethrough, and eliminates noise included in the received signal. In addition, the communication apparatus compares the noise-eliminated signal and a reference signal and recovers an original signal. Further, the communication apparatus generates a base-band signal and transmits the same through the human body. | 11-20-2008 |
| 20090267735 | FINGERPRINT AUTHENTICATION METHOD IN HUMAN BODY COMMUNICATION - There is provided a fingerprint authentication method in human body communication capable of transmitting/receiving data through the fingerprint authentication. The fingerprint authentication method in human body communications is capable of classifying data about two users, which carry about a human body communication equipment, into disclosure information, protection and security information according to a predetermined security level and allowing the two users to communicate the data through contact with the human skin in the human body communication environment using a human body as a communication medium, wherein the protection and security information each having a high protection level are transmitted/received after exchanging fingerprint information and conducting the fingerprint authentication. | 10-29-2009 |
| 20100045446 | RFID SYSTEM USING HUMAN BODY COMMUNICATION - An a Radio Frequency Identification (RFID) system using human body communication includes a first electrode pad receiving a signal of a reader transmitted through a human body, or outputting an output signal to the human body, a rectifier rectifying the signal of the reader to generate a direct current (DC) voltage, a power manager changing the DC voltage into an operation voltage, a modulator/demodulator demodulating the signal of the reader, or modulating the output signal of the tag to transfer the modulated signal to the first electrode pad, a digital controller performing a read or write operation in response to the signal of the reader demodulated by the modulator/demodulator, and a memory storing identification information of the tag and information according to an operation result of the digital controller. | 02-25-2010 |
| 20100171562 | APPARATUS AND METHOD FOR MODULATION AND DEMODULATION USING FREQUENCY SELECTIVE BASEBAND - Provided are modulation and demodulation methods and apparatuses using a frequency selective baseband. The frequency modulation method includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes used for frequency spreading into 2M (M| 07-08-2010 | |
| 20100197225 | METHOD AND APPARATUS FOR COMMUNICATING SOUND WAVE OF HUMAN BODY - A method and apparatus for communicating a sound wave is provided. The apparatus includes: a sound wave converter converting a sound wave signal transmitted from a counter apparatus through the human body into an electrical signal when the sound wave is transmitted from the counter apparatus through the human body and converting an electrical signal on data to be output to the counter apparatus into a sound wave; a data processor receiving the converted electrical signal from the sound wave converter and transmitting an electrical signal on the data to be output to the sound wave converter when the data to be output exists; and a switch connected between the sound wave converter and the data processor, the switch transmitting the converted electrical signal to the data processor and transmitting the electrical signal on the data to be output to the sound wave converter. Accordingly, it is possible to efficiently transmit a signal with a low loss of sound wave signal. Thus, it is possible to simply construct communication hardware at a low price. | 08-05-2010 |
| 20100234756 | HUMAN BODY COMMUNICATION APPARATUS - There is provided a human body communication apparatus capable of performing communications through the contact with external devices (a central processing unit) and a human body. The human body communication apparatus includes a plurality of contact sensor units including a plurality of electrode contacted with a human body and having conductivity, and a plurality of electrostatic sensor units coupled to the electrodes to sense an electrostatic capacity changed through the contact with the human body and generate a contact signal using the sensed electrostatic capacity; a signal analyzer unit for analyzing the contact signal received from the contact sensor units; and a control signal generator unit for generating a control signal as the analysis result in the signal analyzer unit. Therefore, the human body communication apparatus may be useful to minimize the power consumption of modem for human body communication or transceiver circuits by recognizing predetermined patterns of the user so as to reduce the unnecessary power consumption when the communication input/output apparatus, particularly a mobile device, using a human body as a medium is in contact with the device for the purpose of other uses other than the human body communications, and to minimize the power consumption to extend the standby time of the mobile devices. | 09-16-2010 |
| 20100272156 | HUMAN BODY COMMUNICATION SYSTEM AND COMMUNICATION METHOD THEREOF - 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. | 10-28-2010 |
| 20100272159 | FREQUENCY SELECTIVE DIGITAL TRANSMISSION APPARATUS - A frequency selective digital transmission apparatus includes: a preamble transmission processing unit generating a preamble for frame synchronization and spreading the generated preamble with a predetermined spreading code; a header transmission processing unit configuring a header including data attribute information and spreading the header with a predetermined spreading code; a data transmission processing unit performing serial-to-parallel conversion on transmission data according to a selected transmission mode and a spreading scheme and spreading the same with a frequency selective spreading code; and a multiplexing unit multiplexing the preamble, the header, and the data which have been spread by the preamble transmission processing unit, the header transmission processing unit and the data transmission processing unit, respectively, and transmitting the same as digital signals. | 10-28-2010 |
| 20100274083 | HUMAN BODY COMMUNICATION SYSTEM AND METHOD - There is provided a human body communication system including: a wireless capsule injected into the body to acquire image information of the interior of the body and transmitting a signal with respect to the acquired information to the outside of the body from the inside of the body by using an electrode; and a portable data recorder performing, from the outside of the body, RF communication with the wireless capsule by the medium of the body, receiving the signal transmitted from the wireless capsule through an electrode in contact with the human body, processing the received signal into RF data, and storing the RF data. | 10-28-2010 |
| 20100290511 | ADAPTIVE FREQUENCY SELECTIVE BASEBAND COMMUNICATIONS METHOD USING ORTHOGONAL CODES - An adaptive frequency selective baseband communications method using orthogonal codes includes: a communications testing step of performing communications by using one of a plurality of codes each having a different frequency band; a proper code selecting step of selecting a proper code by using a correlation value of a plurality of codes included in test data transmitted in the communications testing step; a communications performing step of performing communications by using the proper code; and a feedback step of newly selecting a proper code by using the correlation value of the plurality of codes included in the test data transmitted in the communications performing step if a pre-set time duration has lapsed or if a reception error of more than a pre-set reference occurs, and performing the communications performing step again, wherein the test data transmitted in the communications testing step and the communications performing step includes a plurality of codes each having a different frequency band. | 11-18-2010 |
| 20100314921 | CHAIR AND MULTIMEDIA PLAYER COMPRISING SOUND TRANSMISSION APPARATUS PERFORMING HUMAN-BODY COMMUNICATIONS - 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. | 12-16-2010 |
| 20100322290 | MODULATION AND DEMODULATION APPARATUS USING FREQUENCY SELECTIVE BASEBAND AND TRANSMISSION AND RECEPTION APPARATUS USING THE SAME - There is provided a communication method using a human body as a medium. A modulation apparatus using a frequency selective baseband according to an aspect of the invention may include: a serial-to-parallel conversion unit converting serial data supplied from an upper layer into parallel data consisting of M+1 number of data input bits; and a frequency selective spreader selecting one subgroup among a plurality of subgroups obtained by dividing 2 | 12-23-2010 |
| 20100329380 | METHOD FOR SELECTING ADAPTIVE FREQUENCY BASEBAND OF WALSH CODES, ADAPTIVE FREQUENCY-SELECTIVE SPREADER USING THE SAME AND TRANSMITTING AND RECEIVING APPARATUS USING THE ADAPTIVE FREQUENCY-SELECTIVE SPREADER - There is provided a human body communication method and system using a frequency-selective baseband in order to transmit and receive data between communication devices that are coupled to a human body by using the human body as a communication channel. The human body communication method and system may be useful to maximize an efficiency of the frequency-selective spreading technology to enhance a processing gain of the Walsh code technology, and thus to reduce the interference between human bodies of users by adaptively selecting a frequency band of Walsh codes that are used for data communications according to the human body channel characteristics and the noise environments that are varied according to the ambient environments, and also construct a low-power and stable human body communication when there is a strong interference induced from other electronic equipments. | 12-30-2010 |
| 20110006926 | TRAINING APPARATUS AND METHOD BASED ON MOTION CONTENT - A training apparatus based on motion content includes a plurality of motion detecting sensors ( | 01-13-2011 |
| 20110007844 | APPARATUS FOR FREQUENCY MODULATING AND DEMODULATING OF FREQUENCY SELECTIVE BASEBAND WITH GAIN OF FREQUENCY DIVERSITY, AND APPARATUS FOR TRANSMITTING AND RECEIVING USING FOR THIS - Provided are a frequency modulation/demodulation apparatus using a frequency selective baseband and a transmitting/receiving apparatus using the same. In a frequency selective baseband transmission technique or an FS-CDMA technique, a transmission rate is controlled according to communication channel environment, spread code groups are repeatedly selected in a receiving side so as to obtain a frequency diversity gain. Accordingly, it is possible to reduce interference between users. In addition, even in a case where strong interference induced from electronic exists, it is possible to implement low-power, stable human-body communication and to ensure a communication quality. | 01-13-2011 |
| 20110013545 | TDD COMMUNICATION APPARATUS AND OPERATION METHOD THEREOF - A Time Division Duplex (TDD) communication apparatus and an operation method thereof can provide operation clock signals in the transmission and reception of the TDD communication apparatus using a Clock Recovery & Data Retiming (CDR) circuit, thereby stabilizing an operation without any crystal oscillator and reducing the power consumption. In a transmission time interval, a transmitting frame is processed using a clock signal of a reference frequency generated from the CDR circuit. In a reception time interval, a receiving frame is processed using a clock signal recovered from the receiving frame by the CDR circuit. | 01-20-2011 |
| 20110019717 | HUMAN BODY COMMUNICATION APPARATUS FOR NON-CONTACT COMMUNICATIONS AND HUMAN BODY COMMUNICATION METHOD FOR NON-CONTACT COMMUNICATIONS IN THE SAME USING FREQUENCY SELECTIVE BASEBAND - Provided are a human body communication apparatus for non-contact communications using a frequency-selective baseband and a human body communication method for non-contact communications in the same. The human body communication apparatus may be useful to perform stable communications between users by reducing interference induced from other communication apparatuses without affecting interference between the users since data are transmitted/received between communication apparatuses adjacent to a human body by spreading and despreading the data using only spreading codes of a limited frequency band (frequency-selective baseband) in which an inductive electromagnetic field formed by an antenna shows the most effective characteristics. | 01-27-2011 |
| 20110026741 | HUMAN BODY SOUND TRANSMISSION SYSTEM AND METHOD FOR TRANSMITTING A PLURALITY OF SIGNALS - There are provided a human body sound transmission system and a method. The human body sound transmission system according to an aspect of the present invention directly or indirectly contacts a human body to apply coupled signals of high frequency sound signals with high frequency signals, which recover sound signals from the high frequency sound signals, to the human body and transmit the sound signals using the human body as a transmission medium, wherein a magnitude of the sound signals recovered around a human's ear is increased in proportion to the number of signals transmitted through the human body by transmitting the plurality of signals including the same sound signals through the human body. | 02-03-2011 |
| 20110029825 | APPARATUS AND METHOD FOR SYMBOL ERROR CORRECTABLE MODULATION AND DEMODULATION USING FREQUENCY SELECTIVE BASEBAND - Provided are symbol-error-correctable modulation and demodulation methods and apparatuses using a frequency selective baseband. The symbol-error-correctable frequency modulation method using a frequency selective baseband, includes: generating a plurality of subgroups by dividing 2N (N is a real number) spread codes or orthogonal codes used for frequency spreading into 2M (M| 02-03-2011 | |
| 20110033068 | HUMAN BODY SOUND TRANSMISSION APPARATUS AND METHOD FOR MINIMIZING SIGNAL LOSS - A human body sound transmission apparatus and method for minimizing a signal loss are disclosed. The human body sound transmission apparatus includes: an audio signal transmission unit modulating an audio signal desired to be transmitted, and transmitting the modulated audio signal to the vicinity of a user's ear through the human body (i.e., a user's body); and a carrier wave signal transmission unit transmitting a carrier wave signal for demodulating the modulated audio signal to the vicinity of the user's ear through the air. | 02-10-2011 |
| 20110058591 | FREQUENCY SELECTIVE MODULATING APPARATUS AND METHOD USING RE-SPREADING CODE - A frequency selective modulation apparatus and method using re-spreading codes are disclosed. The frequency selective modulation apparatus includes: a serial-to-parallel converter receiving transmission data and performing serial-to-parallel conversion on the transmission data at a pre-set ratio; one or more sub-frequency selective spreaders selecting one spreading code by using data bits received from the serial-to-parallel converter; a majority value selection unit selecting a majority value from one or more spreading codes which have been selected by each of the one or more of the sub-frequency selective spreaders; and a first XOR logic circuit XORing an output of the majority value selection unit and a re-spreading code Wn to re-spread a frequency selective baseband to a frequency selective passband. | 03-10-2011 |
| 20110058615 | PREAMBLE GENERATING APPARATUS AND METHOD FOR DIGITAL DIRECT TRANSMISSION SYSTEM - A preamble generating apparatus and method for a digital direct transmission system are disclosed. The preamble generating apparatus for a digital direct transmission system includes: a pseudo-noise (PN) code generation unit generating a PN code; a line coder performing line coding on the PN code received from the PN code generation unit; and a spreading coder performing spread coding on the line-coded PN code received from the line coder. | 03-10-2011 |
| 20110064161 | FREQUENCY SELECTIVE TRANSMISSION APPARATUS - There is provided a frequency selective transmission apparatus. The frequency selective transmission apparatus includes: a preamble generating unit that generates a preamble for frame synchronization; an SFD/RI generating unit that generates a start frame delimiter/rate indicator (SFD/RI) having a function of an indicator to announce the start of the frame and a function to define the transmission rates of a header field or header and data fields; a header generating unit that generates a header including attribute information on transmission data; a data generating unit that has a predetermined processing gain and transmits digital data at a desired frequency band; a pilot generating unit that generates a pilot inserted into the frame for frequency offset compensation; a multiplexer that receives and multiplexes outputs from the preamble generating unit, the SFD/RI generating unit, the header generating unit, the data generating unit, and the pilot generating unit, respectively; and a signal electrode that transmits the output from the multiplexer into a human body. | 03-17-2011 |
| 20110123032 | SINGLE SOUND TRANSMISSION APPARATUS USING HUMAN BODY COMMUNICATON - Provided is a single sound transmission apparatus using human body communication. The single sound transmission apparatus includes a sound signal generator generating a sound signal of an audio frequency band, a high frequency signal generator generating a high frequency signal having a higher frequency than the audio frequency band, a signal combiner generating a combined signal by combining the sound signal with the high frequency signal, and a signal transmitter varying a phase difference between the combined signal outputted from the signal combiner and the high frequency signal outputted from the high frequency signal generator, and outputting the combined signal and the high frequency signal together to a human body, in order to leave only the sound signal through destructive interference of the high frequency signal of the combined signal, wherein the destructive interference is generated in an ear area of the human body. | 05-26-2011 |
| 20110148652 | WALKING GUIDANCE APPARATUS USING HUMAN BODY COMMUNICATION - A walking guidance apparatus using human body communication, including: a first human body communication device acquiring a walking guidance information signal, converting the acquired walking guidance information signal into a signal available for human body communication, and transmitting the converted signal through a user's body; and a second human body communication device receiving the signal transmitted through the user's body from the first human body communication device, converting the received signal into a signal that can be recognized by the user, and outputting the converted signal. Walking guidance information having a high privacy function and high stability and accuracy can be provided to enhance user convenience. | 06-23-2011 |
