摘要:
A system for and a method of providing an integrated communications and broadcasting service are provided. This system includes a transmitter and a receiver. The transmitter converts a CATV broadcasting signal and a satellite broadcasting signal into a CATV broadcasting optical signal and a satellite broadcasting optical signal having predetermined wavelengths, wavelength-multiplexes the two broadcasting optical signals, and wavelength-multiplexes a wavelength-multiplexed broadcasting optical signal with an Internet data signal to transmit an integrated communications and broadcasting optical signal via a predetermined optical fiber. The receiver receives the integrated communications and broadcasting optical signal from the transmitter, demultiplexes the received signal according to a wavelength band, converts the CATV broadcasting optical signal, the satellite broadcasting optical signal, and the Internet data signal, into which the received signal is demultiplexed, into RF signals, and transports the RF signals to appropriate terminals.
摘要:
A system for and a method of providing an integrated communications and broadcasting service are provided. This system includes a transmitter and a receiver. The transmitter RF-multiplexes a CATV broadcasting signal and a satellite broadcasting signal, converts the RF-multiplexed broadcasting signal into an RF-multiplexed broadcasting optical signal having a predetermined wavelength, multiplexes the broadcasting optical signal with an Internet data signal, and transmits an integrated communications and broadcasting optical signal via a predetermined optical fiber. The receiver receives the integrated communications and broadcasting optical signal from the transmitter, demultiplexes the received signal according to a wavelength band to separate the received signal into the broadcasting optical signal and the Internet data signal, separates the broadcasting optical signal into the CATV broadcasting signal and the satellite broadcasting signal using the difference between wavelength bands of the CATV broadcasting signal and the satellite broadcasting signal, and transports the separated signals to appropriate terminals.
摘要:
Provided are an optical network unit (ONU) and method for servicing Ethernet-based digital cable broadcasting. The ONU includes a received frame classifier, which receives an Ethernet frame from an OLT and classifies the Ethernet frame into a digital broadcasting frame or a nonbroadcasting frame; a broadcasting frame classifier, which sorts the digital broadcasting frame according to a channel; and a broadcasting frame processing unit, which examines a channel requested by a subscriber and transmits a broadcasting frame corresponding to the channel to the subscriber.
摘要:
In a flat display panel, a surface of at least one of a sustain electrode and an address electrode may be formed to have a curved surface. The surface of the electrode may be formed as a continuous curved surface. The sustain electrode and the address electrode may be elongated in a lengthwise direction thereof. These lengthwise directions may be perpendicular to each other. The electrode may be formed by transferring an electrode material onto the substrate using an electrode frame defined with electrode forming grooves each having a same sectional shape as the electrode. Therefore, the surface of the electrode may be formed as the curved surface.
摘要:
A method for implementing a redundant structure of an ATCA system via a base interface of a network system based on an ATCA standard, and the ATCA system for use in the same are disclosed. Each of routing protocol shelves and LI shelves includes two ports connected to two IPC paths provided from the base interface, such that a representative IP address is assigned to a single port to be used, performs IPC communication using the representative IP address. If a port error or link-down state occurs, the representative IP address is assigned to the other port, resulting in the implementation of stable IPC communication. If the port error or link-down state occurs in an active-mode ShMC shelf, an IPC path passing through a standby-mode ShMC shelf is provided.
摘要:
The present invention provides a device and method for allocating a bandwidth to a plurality of optical network units (ONUs) for transmitting an uplink frame in the EPON. The bandwidth allocation device includes a plurality of optical network units and an optical line terminal (OLT). The optical network units classify uplink data to be transmitted to an optical line terminal according to a predetermined priority, and transmit the classified uplink data by receiving an allocated bandwidth according to each class from the optical line terminal. The optical line terminal preferentially distributes a predetermined bandwidth for transmitting uplink frames of a highest priority class to the optical network units and then dynamically distributes a remained bandwidth form transmitting the uplink frames for remained classes.
摘要:
An LCD device has scratch-resistant property without using a protection sheet and can provide enhanced brightness. The LCD device includes a light path regulating member. The member includes a first prism sheet having first prisms of which apex has a round shape. The first prism sheet concentrates light supplied from a lamp to output the concentrated light. An anti-glare polarizing plate uniformly polarizes polarized planes of the concentrated light and provides the polarized light to the lower substrate. The anti-glare polarizing plate is arranged below the lower substrate of an LCD panel, and an uppermost prism sheet of optical sheets is non-matte-treated and has round-treated apexes. In spite of the absence of the protection sheet, the scratch-resistant property of the uppermost prism sheet and the brightness of the LCD panel may be enhanced.
摘要:
A reactor for thin film deposition and a thin film deposition method using the reactor are provided. The reactor includes: a reactor block which receives a wafer transferred through a wafer transfer slit; a wafer block which is installed in the reactor block to receive the wafer thereon; a top plate disposed to cover the reactor block; a shower head which is mounted on the bottom of the top plate and diffuses gas toward the wafer; and an exhaust unit which exhausts the gas from the reactor block. A first supply pipeline which supplies a first reactant gas and/or an inert gas to the wafer; a second supply pipeline which supplies a second reactant gas and/or an inert gas to the wafer; and a plasma generator which generates plasma between the wafer block and shower head are included. The shower head includes: a first supply path connected to the first supply pipeline; a plurality of first diffuse holes formed in the bottom of the shower head at a constant interval; a first main path formed parallel to the plane of the shower head and connecting the plurality of first diffuse holes and the first supply path; a second supply path connected to the second supply pipeline; a plurality of second diffuse holes formed in the bottom of the shower head at a constant interval as the plurality of the first diffuse holes; and a second main path formed parallel to the plane of the shower head at a different height from the second main path and connecting the plurality of second diffuse holes and the second supply path.
摘要:
The present invention relates to novel rumen bacterial mutants resulted from the disruption of a lactate dehydrogenase gene (ldhA) and a pyruvate formate-lyase gene (pfl) (which are involved in the production of lactic acid, formic acid and acetic acid) from rumen bacteria; a novel bacterial mutant (Mannheimia sp. LPK7) having disruptions of a lactate dehydrogenase gene (ldhA), a pyruvate formate-lyase gene (pfl), a phosphotransacetylase gene (pta), and a acetate kinase gene (ackA); a novel bacterial mutant (Mannheimia sp. LPK4) having disruptions of a lactate dehydrogenase gene (ldhA), a pyruvate formate-lyase gene (pfl) and a phosphoenolpyruvate carboxylase gene (ppc) involved in the immobilization of CO2 in a metabolic pathway of producing succinic acid; and a method for producing succinic acid, which is characterized by the culture of the above mutants in anaerobic conditions. The inventive bacterial mutants have the property of producing succinic acid at high concentration while producing little or no organic acids, as compared to the prior wild-type strains of producing various organic acids. Thus, the inventive bacterial mutants are useful as strains for the industrial production of succinic acid.
摘要:
Provided is a shower head used in a reactor for thin film deposition, and a method of fabricating the shower head. The shower head for injecting gases onto a wafer mounted on a wafer block includes: a first supply path supplying a first reaction gas and a second supply path supplying a second reaction gas; a first main path connected to the first supply path and in the plane of the shower head, a plurality of first sub-paths diverging from the first main path in the plane of the shower head, a plurality of first diffuse holes formed regularly spaced on a bottom surface of the shower head, and a plurality of first diffuse paths connecting the plurality of first sub-paths to the plurality of first diffuse holes; a second main path connected to the second supply path in the plane of the shower head and not contacting the first main path, a plurality of second sub-paths diverging from the second main path in the plane of the shower head, a plurality of second diffuse holes formed regularly spaced on a bottom surface of the shower head, and a plurality of second diffuse paths connecting the plurality of second sub-paths and the plurality of second diffuse holes; and a sealing unit sealing open ends of the first and second main paths and open ends of the first and second sub-paths formed in the shower head.