Abstract:
Disclosed is an ROF link apparatus for selecting an IF band in order to process various service signals through an MMF, which including transmitters for receiving the service signals, performing IF modulation for the service signals, and transferring the modulated IF signals, a first controller for scanning frequency characteristics of the MMF, searching for flat frequency bands, and transferring information regarding the flat frequency band, thereby controlling IF modulation to be performed, a link unit for combining the IF signals with output signals of the first controller, converting the combined signals into optical signals, transmitting the optical signals, converting the optical signals into electrical signals, and splitting the electrical signals, a second controller for receiving the output signals of the first controller, detecting information regarding the flat frequency band, and transferring the information to receivers, thereby controlling modulation to be performed, and the receivers for receiving the IF modulated signals, receiving the information from the second controller, and performing RF modulation.
Abstract:
Disclosed is a method for approval of a time-dependent stream input to a predetermined node in a residential Ethernet system, the method including the steps of receiving a transmission request of the time-dependent stream by the predetermined node, extracting a pacing parameter and a cycle number, which are a delay value of the predetermined node and a transmission period of the time-dependent stream, respectively, from the transmission-requested time-dependent stream, calculating a transmission bandwidth of an entire time-dependent stream to be transmitted through the predetermined node, by taking into consideration the pacing parameter and the cycle number, determining if the transmission bandwidth, which includes the transmission-requested time-dependent stream, satisfies a total transmission bandwidth based on the pacing parameter and the cycle number and determining whether to approve the transmission-requested time-dependent stream.
Abstract:
The present invention provides an organic light emitting device comprising a substrate, a first electrode, an organic material layer and a second electrode in sequentially laminated form, wherein a plurality of continued hemispherical recesses are formed on an upper surface of the substrate aligned adjacent to the first electrode. In addition, The present invention provides a method comprising the steps of a) dipping a substrate having at least one aluminum surface in an acid solution, and applying oxidation voltage of 10 to 400 V to the substrate so as to form an aluminum oxide layer on the aluminum surface of the substrate in such a manner that a plurality of continued recesses are formed on the aluminum oxide layer, and a plurality of continued recesses having curvature in identical direction to that of the recesses on the aluminum oxide layer are formed on an interface between the aluminum oxide layer and the substrate; b) removing the aluminum oxide layer from the substrate, thereby forming a plurality of continued hemispherical recesses; and c) forming an organic material layer and an electrode on one surface of the substrate formed with the hemispherical recesses.
Abstract:
Disclosed are an apparatus and a method for shortening a processing time at each node in an optical network. A transmission optical cross-connect (OXC) determines a transmission rate corresponding to the transmission speed of the signal to be transmitted. An optical receiver and an optical transmitter are stabilized by means of the transmission rate. In addition, a transmission OXC transmits the transmission rate to an OXC aligned between the transmission OXC and the receiving OXC, thereby stabilizing the OXC. Each of the OXCs detects the transmission speed of the optical signal to be received so that a time required for converting the transmission speed is reduced.
Abstract:
A residential Ethernet switching device for sub frame-based switching in a residential Ethernet system is provided. The device includes a plurality of reception data path processors for parsing a residential Ethernet frame inputted to the residential Ethernet switching device, as respective residential Ethernet sub frames, and outputting the parsed residential Ethernet sub frames, a switch fabric for switching the residential Ethernet sub frames inputted through the plurality of reception data path processors, a plurality of transmission data path processors for providing an output path for multiplexing and outputting the residential Ethernet sub frames switched through the switch fabric, and a local cycle counter connected to the plurality of reception data path processors, the switch fabric, and the plurality of transmission data path processors, and providing cycle counter information on the respective residential Ethernet sub-frames.
Abstract:
A conductive connector for use by an image module connects electrically a first electric circuit substrate having a first conductive pattern to a second electric circuit substrate having a second conductive pattern. The conductive connector includes an insulating substrate located between the first electric circuit substrate and the second electric circuit substrate, and has at least one hole formed by perforation, and a conductive filling material filled in the hole for electrically connecting the first conductive pattern to the second conductive pattern.
Abstract:
A method and apparatus for processing halftone by generating a first dot pattern corresponding to a first color and a second dot pattern corresponding to a second color for a video signal having at least two colors is provided. The method includes generating the first dot pattern by halftone processing the video signal using a first screen, and generating the second dot pattern by halftone processing the video signal using a second screen, which has a relationship of complement relative to the first screen.
Abstract:
A method for transmitting asynchronous data includes including: comparing a size of asynchronous data with that of an empty transmission area; inserting the asynchronous data into the empty transmission area when the asynchronous data has a size smaller than or equal to that of the empty transmission area; determining if the empty transmission area has a size larger than a predetermined threshold value when the asynchronous data has a size larger than that of the empty transmission area; transmitting the asynchronous data with the empty transmission area left when the empty transmission area has a size smaller than the predetermined threshold value; and segmenting the asynchronous data according to the size of the empty transmission area when the empty transmission area has a size larger than the predetermined threshold value, inserting the segmented asynchronous data into the empty transmission area, and transmitting remaining segmented asynchronous data in a subsequent transmission cycle.
Abstract:
A dual-port broadband light source is disclosed. In the dual-port broadband light source, a first beam splitter splits a first ASE at a first ratio into the second and third light paths and outputs the first ASE received from the second light path to the first light path. A second beam splitter splits a second ASE at a second ratio into the second and fourth light sources and outputs the second ASE received from the second light path to the first light path. A first reflector reflects input first and second ASEs in the first light path, and a second reflector reflects input first and second ASEs in the second light path. A first gain medium generates the first ASE between the first reflector and the first beam splitter, and a second gain medium generates the second ASE between the first reflector and the second beam splitter.
Abstract:
A lens holder apparatus of a camera lens module is provided and includes a printed circuit board, an image sensor provided on a printed circuit board, a plurality of lenses, and a spacer The lenses are assembled within the lens holder allow focal lengths between the sensor and respective lenses to be adjusted freely, and a stopper is detachably provided at a lower portion of the space of the lens holder, such that the stopper can be separated from the lower portion and then recombined therewith after the readjustment of the focal length.