Abstract: An input device and a portable terminal. The input device includes a tactile member which varies at positions of input keys, and a contact sensing layer which is disposed under the tactile member so as to detect an input operation through the tactile member. Further, the portable terminal includes a body which has an input/output unit, an input device which is detachably connected to the body so as to implement an input to the body, and a controller which controls an operation of the input/output unit and the input device, wherein the input device further includes a tactile member which varies at a position of a contacted input key, and a contact sensing layer which is disposed under the tactile member so as to detect an input operation through the tactile member.

Abstract: A method and an apparatus are provided for exchanging information is an electronic device. Object data is received at an input unit. Object information associated with the object data is received at a communication unit via contact between a first medium and a second medium. The first medium directly contacts the electronic device. The object data is associated with the object information.

Abstract: A cover device having an input unit and a portable terminal having the cover device are provided. The cover device includes a cover unit divided into a plurality of areas, each area having an electrode. A connection surface is provided in the cover unit and configured to be detachably engaged with a terminal to which the cover unit is mounted. The input unit including an electrode line is configured to transmit a touch input signal to a touch panel of the terminal through an electrode of a touched area among the plurality of areas.

Abstract: An apparatus for notifying packet information using a start frame delimiter (SFD) comprises: a SFD transmission unit which generates an SFD code and transmits a packet by positioning the generated SFD code in a position corresponding to specific additional information to notify the specific additional information; and a SFD reception unit which receives the packet from the SFD transmission unit, detects the position of the SFD code positioned within the packet, and detects the additional information corresponding to the detected position.

Abstract: A method and electronic device for transmitting an emergency signal. The method includes: establishing a short-range communication link with a counterpart electronic device using a first short-range communication network; generating an emergency signal when the short-range communication link with the counterpart electronic device is cut off; and broadcasting the emergency signal using a second short-range communication network.

Abstract: A method for controlling a function of an electronic device by using an electronic pen and the electronic device are provided. The method of controlling the function of the electronic device includes determining a motion of an electronic pen inserted into the electronic device and confirming an operation corresponding to the determined motion of the electronic pen to perform the operation.

Abstract: An electronic device and method of controlling the electronic device are disclosed. The method includes identifying, by an electronic device, an identification (ID) of an accessory that is coupled to the electronic device. The method also includes receiving, by the electronic device, at least one software program, based on the identified ID of the accessory. Additionally, the method includes installing, by the electronic device, the received software program.

Abstract: An electronic device and a method for controlling a payment function of an input means are provided. The operating method of the electronic device includes receiving a packet periodically transmitted from an input means, determining a distance from the electronic device to the input means based on determining a signal reception strength of the packet, extracting a distance value from storage associated with a matching reception strength and sending to the input means a signal according to the extracted distance value of the input means and the received packet.

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: An apparatus for notifying packet information using a start frame delimiter (SFD) comprises: a SFD transmission unit which generates an SFD code and transmits a packet by positioning the generated SFD code in a position corresponding to specific additional information to notify the specific additional information; and a SFD reception unit which receives the packet from the SFD transmission unit, detects the position of the SFD code positioned within the packet, and detects the additional information corresponding to the detected position.

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 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: 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.