Patent application number | Description | Published |
20080259827 | Communication System Using Frequency According to Security or Transmission Distance - A communication system using a frequency determined according to information security protection or a transmission distance of a signal is provided. A local area communication requiring information security protection uses a frequency less than a predetermined frequency, and a local or wide area communication requiring no information security protection uses a frequency greater than predetermined frequency, thereby providing an effective communication environment based on information security protection, a communication distance, and communication characteristics satisfying frequency characteristics of a transmission medium, and accordingly increasing a communication field. | 10-23-2008 |
20080284607 | Communication Apparatus Having Human Body Contact Sensing Function and Method Thereof - Provided is a communication apparatus having a human body contact sensing function and a method thereof. The communication apparatus includes: an electrode that comes in contact with the human body; a contact sensor that is connected to the electrode, and instructs the central processing unit to perform an initial operation if contact with the human body is sensed; and a data processing unit that receives a control signal from the central processing unit so as to select whether to transmit or receive data, and performs a transmitting or receiving operation according to the control signal. Accordingly, in order to reduce power consumption when in a stand-by state before human body contact is made in a communication apparatus using a human body as a communication medium, a human body contact sensor is included so as to minimize power consumption of a micro processing unit and a transmitter/receiver circuit until contact occurs. Therefore, since power consumption is minimized when in a stand-by mode by using a contact sensor having significantly low power consumption, there is an advantage in that a stand-by time of a portable device is extended. | 11-20-2008 |
20080294722 | Method and Apparatus for Providing Touch and Play (Tap) - Based Service and System Using the Method and Apparatus - Provided are a method, apparatus and system for providing a touch and play (TAP)-based service. The method includes setting respective device identifiers of a plurality of devices which can be connected to a device using an organism as a transmission channel and setting services to be provided to a user through the interaction between the device and each of the devices corresponding to the device identifiers, respectively; having at least two execution levels so that one of the at least two execution levels can be selected in order to determine whether to execute a service in cooperation with one of the devices and setting one of the at least two execution levels according to an input from a user; receiving a device identifier of another device if the device is connected to one of the devices using the organism as the transmission channel; recognizing services set for the other device and identifying a service that is to be provided to the user through the interaction between the device and the other device; determining whether to execute the identified service according to the set execution level; and automatically recognizing information required to provide the service that is determined to be executed in cooperation with the other device and executing the determined service. When the method, apparatus and the system are used, a user can receive a desired service by simply touching two devices. | 11-27-2008 |
20090103643 | HUMAN BODY COMMUNICATION METHOD USING MULTI-CARRIER MODULATION METHOD - Provided is a human body communication method using a multi-carrier modulation method, in which users do not interfere with each other in an environment with several users, and stable communication is possible when users are exposed to strong interference generated at other electronic devices. Also, provided are a multi-carrier modulation method, in which data between communication devices connected to a human body used as a channel is divided into a plurality of sub-channels and the data is transmitted by loading it on each of a plurality of sub-carrier signals, and a multi-connection method using the multi-carrier modulation method. The plurality of sub-channels having a predetermined bandwidth include several sub-carriers, and by changing a modulation method applied to the sub-carriers, stable communication can be realized. | 04-23-2009 |
20090198112 | PORTABLE DATA TRANSMITTING DEVICE, AND SYSTEM AND METHOD FOR MANAGING HEAT STRESS USING THE SAME - A highly precise clock synchronization apparatus in a real-time locating system (RTLS), includes an optical transmitting/receiving unit for receiving a clock information frame from a clock synchronization server, converting the received clock information frame in series-parallel, and transmitting/receiving the clock information data and the clock information; an offset estimation unit for detecting a preamble signal and a clock information signal from he series-parallel converted clock information frame, calculating a phase difference value by comparing the detected preamble signal with the detected clock information signal, and outputting an offset value based on the calculated phase difference value; and a clock synchronization unit for updating a local clock value to a time of the clock synchronization server based on the offset value and the clock information frame. | 08-06-2009 |
20090233558 | COMMUNICATION DEVICE AND METHOD USING HUMAN BODY - A communication device and method using the human body are provided. The communication device determines an arrangement direction of signal electrodes and ground electrodes according to a signal transmission direction and whether the ground electrodes come into contact with the human body according to a transmission/receiving distance and then performs data communication with the other communication device connected to the human body for the purpose of efficient human body communication. | 09-17-2009 |
20100172394 | METHOD OF AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL AT VARIABLE DATA RATE IN HUMAN BODY COMMUNICATIONS - Provided are a method and apparatus for transmitting and receiving a signal at a variable data rate in human body communications. The apparatus includes a header generator, a data generator, a spreader, and a multiplexer. The header generator generates header information including a data rate. The data generator generates transmission data by repeating each data bit to be transmitted 0 to several times according to the data rate. The spreader spreads the transmission data using a spreading code in a desired frequency band. The multiplexer multiplexes the header information and the spread data. | 07-08-2010 |
20100238955 | METHOD AND DEVICE FOR COMMUNICATING USING HUMAN BODY - A communication device and method is provided. The communication method using a human body includes modulating data, generating a first timing signal by using the modulated data, generating a wideband pulse with a short time interval on the basis of the first timing signal, and transmitting the wideband pulse through an electrode unit that contacts a human body. | 09-23-2010 |
20100322294 | HUMAN BODY COMMUNICATION DEVICE, HUMAN BODY COMMUNICATION SYSTEM AND METHOD USING THE SAME - A human body communication apparatus, a human body communication system, and a method using the same are provided. The communication apparatus is directly in contact with a human body and allows a small amount of current including a data signal to flow through the body so that information is communicated through the human body. | 12-23-2010 |