Abstract: A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

Abstract: Provided is a semiconductor light emitting device and a method for manufacturing the same. The semiconductor light emitting device comprises: a first conductive type semiconductor layer; an active layer on the first conductive type semiconductor layer; an undoped semiconductor layer on the active layer; a first delta-doped layer on the undoped semiconductor layer; and a second conductive type semiconductor layer on the first delta-doped layer.

Abstract: A recording medium for storing information for still pictures, and a recording/reproducing method and apparatus therefor, stores data for a plurality of still pictures and audio data added thereto in one file or a space having a logically one-dimensional order, rather than in each file, and still picture group information for separating the still picture data into a predetermined maximum number of groups in order to manage the still pictures at a group level. The still picture group information includes general information for still picture groups, and information for still pictures in each still picture group. The general information for each still picture group includes the start position of a first still picture in each still picture group, and the information for still pictures in each still picture group includes the sizes of video data and audio data for each still picture.

Abstract: A routing method of a wireless network system is provided. Paths of the wireless network system are divided into down-stream and up-stream paths. The up-stream paths are reset for each period, or whenever a network is changed, or whenever transmission of data fails more than a predetermined number of times. Accordingly, it is possible to secure an average lifetime of a wireless network system by previously preventing a bottleneck from occurring at a specific node, increase a transmission speed of data by reducing the hop count to the sink node connected to the information collector, and reduce power consumption of a battery.

Abstract: An apparatus and a method according to example embodiments is capable of patterning ink on a substrate by using dip-pen nanolithography regardless of the interaction between the ink and the substrate. The patterning apparatus may includes a heat supply control device. The heat supply control device may supply heat so as to liquefy the ink and facilitate the patterning of the ink on the substrate. The melting point of the ink may be set within the predetermined temperature controlled by the heat supply control device.

Abstract: A recording medium includes a program containing video data and/or audio data and navigation information which defines a thumbnail, wherein the thumbnail relates to the program and is reproduceable as moving pictures. The recording medium may include a plurality of programs and the thumbnail may identify or represent one or more of the programs. By assigning a predetermined interval of a bit stream corresponding to a program as a thumbnail, the recording medium having the thumbnail thereon, that can be reproduced as moving pictures, can be obtained.

Abstract: Disclosed is a wireless sensor network with a linear structure capable of bidirectional communication. The wireless sensor network includes a plurality of nodes linearly connected from a sink node to a terminal node by connecting each node to a single upper-level node and a single lower-level node, each node has an active period for transmitting/receiving data to/from its upper-level node and lower-level node, the active period includes a downstream duration for transmitting data/commands from the sink node to the terminal node and an upstream duration for transmitting data/commands from the terminal node to the sink node, and each of the upstream and downstream durations sequentially includes RX, TX, and ACK intervals, so that bidirectional communication between the sink node and the terminal node can be performed within a single active period.

Abstract: Provided is a semiconductor light emitting device and a method for manufacturing the same. The semiconductor light emitting device comprises: a first conductive type semiconductor layer; an active layer on the first conductive type semiconductor layer; an undoped semiconductor layer on the active layer; a first delta-doped layer on the undoped semiconductor layer; and a second conductive type semiconductor layer on the first delta-doped layer.

Abstract: There is provided a method for data transmission in a communication system, including: transmitting part of data to be transmitted from one terminal to another terminal depending on a maximum transmission tolerable capacity; when the transmission of the data is stopped during the transmission, storing information on a capacity of the partial data lastly validly transmitted from said another terminal and information on a corresponding session; when a next session begins after stop of the current session, transmitting the information from said another terminal to said one terminal to recognize the information as a session upon restart; and finding, at said one terminal, data at the time when the transmission is stopped, and transmitting the data following partial data at the stopping time to said another terminal.

Abstract: A data transmitting and receiving method and a communication system using the method are provided. A transmitting node generates a plurality of data packets by dividing a large-sized data and transmits the data packets to a receiving node at one time, and after that, re-transmits only the non-received data packet(s) which is not received by the receiving node. Accordingly, the number of response packets which the receiving node is to transmit can be reduced, so that it is possible to increase transmission rate.

Abstract: A pulse control device is maintained with a constant pulse width corresponding to a change of process or temperature. The pulse control device comprises a fuse set for selectively outputting a delay increase signal and a delay decrease signal that have a different state based on a cutting or non-cutting state of a fuse on which information on a change of process is programmed, and a pulse generator provided with a plurality of delay cells with predetermined time delay for selectively increasing or decreasing the number of the plurality of delay cells depending on the delay increase signal and the delay decrease signal to generate an internal clock with a pulse width corresponding to the number of the increased or decreased delay cells.

Abstract: Provided is a communication quality measurement method and a portable communication quality measurement device for wireless sensor network. configuration.

Abstract: Provided are a delay locked loop (DLL) and a method for generating a divided clock therein. In the DLL, a width of a reference frequency for phase comparison can be changed depending on a magnitude of an operating frequency. In the DLL, a clock buffer receives a clock equal to an external clock and generates an internal clock. An enable clock generator generates a 1-period enable clock or a 2-period enable clock using a command signal generated for performing a predefined operation. The command signal is generated according to an address command signal inputted from an exterior. A clock divider divides the internal clock to generate a divided clock. The divided clock is controlled by the 1-period enable clock or the 2-period enable clock, such that the divided clock is made to be a 1-period based dividing clock or a 2-period based dividing clock.

Abstract: Provided is a pulse control device is maintained with a constant pulse width corresponding to a change of process or temperature. The pulse control device comprises a fuse set for selectively outputting a delay increase signal and a delay decrease signal that have a different state based on a cutting or non-cutting state of a fuse on which information on a change of process is programmed, and a pulse generator provided with a plurality of delay cells with predetermined time delay for selectively increasing or decreasing the number of the plurality of delay cells depending on the delay increase signal and the delay decrease signal to generate an internal clock with a pulse width corresponding to the number of the increased or decreased delay cells.

Abstract: A recording medium includes a program containing video data and/or audio data and navigation information which defines a thumbnail, wherein the thumbnail relates to the program and is reproduceable as moving pictures. The recording medium may include a plurality of programs and the thumbnail may identify or represent one or more of the programs. By assigning a predetermined interval of a bit stream corresponding to a program as a thumbnail, the recording medium having the thumbnail thereon, that can be reproduced as moving pictures, can be obtained.

Abstract: A recording medium for storing virtual deletion information, and recording and/or reproducing method and apparatus therefor are provided. The recording medium includes a first region having a plurality of still pictures, and a second region having first virtual deletion information for the still pictures, and still picture group information for separating the still pictures in the first region into a predetermined maximum number of groups in order to manage the still pictures at a group level, wherein the first virtual deletion information is within the still picture group information, and if the first virtual deletion information is set to a virtual delete state, the corresponding still picture is not to be reproduced. Accordingly, file extent information can be prevented from excessively increasing by maximally preventing a recording area from being scattered, when some of a data file are deleted by a user's request.

Abstract: Embodiments for filtering clutter signals from receive signals obtained in a Doppler mode in an ultrasound system are disclosed. In one embodiment, the ultrasound system comprises a Tx/Rx unit, a signal processing unit and an input unit. The Tx/Rx unit transmits ultrasound signals to a target object and receives echoes reflected from the target object. The signal processing unit processes the received echoes to provide 2-dimensional image data of the target object, the 2-dimensional image data being representative of a 2-dimensional image. The input unit enables a user to set a region of interest (ROI) on the 2-dimensional image of the target object. The Tx/Rx unit and the signal processing unit are further configured to operate such that a Doppler mode image pixel data corresponding to the ROI is obtained.

Abstract: A hinge apparatus includes a substantially cylindrical holder having at least one guide hole with a predetermined degree slope that extends in a longitudinal direction. A hinge shaft includes a substantially cylindrical surface configured to linearly move in the longitudinal direction of the holder. A guide pin has an end located inside the guide hole and is configured to extend through the cylindrical surface of the hinge shaft. Therefore, when the hinge shaft moves linearly in the holder, the guide pin moves along the guide hole so that the hinge shaft rotates in the holder.

Abstract: An internal voltage generator for use in a semiconductor memory device includes a first voltage detection unit, a second voltage detection unit, a detection signal generation unit, and an internal voltage generation unit. The first voltage detection unit detects a voltage level of an internal voltage changing linearly depending on a temperature variation to output a first detection signal. The second voltage detection unit detects the voltage level having a constant value without concerning the temperature variation to output a second detection signal. The detection signal output unit combines the first and the second detection signal to generate a combined detection signal for detecting the voltage level linearly varying according to the temperature variation in a first range of temperature and detecting the voltage level having the constant value in a second range of temperature.

Abstract: Provided is a system and method for searching for a document based on a policy. The system includes: a document database for storing document files; a document format and text filer for extracting document format information and text information from a document newly stored in the document database; a document format policy module for setting a document format search policy according to an instruction from an administrator; a document text policy module for setting a document text search policy according to an instruction from the administrator; a document format information search module for searching for a document having a document format matching the set document format search policy in the document database; and a document text information search module for searching for a document having a text matching the set document text search policy in the document database.