Abstract: Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and a signal-processing method thereof. A digital broadcasting transmitter comprises a randomizer for inputting dual TS stream consists of robust and normal packets having stuff bytes inserted in predetermined positions and randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff byte of a randomized data stream from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.

Abstract: Provided are an apparatus and method for processing analog monitoring signals by using a serial bus. The apparatus includes a multiplexer receiving at least one analog signal and outputting only one of the at least one analog signal in response to a predetermined control signal; an analog-to-digital converter converting the output analog signal into a digital signal; a first controller generating the control signal, outputting the control signal to the multiplexer, and controlling the operation of the analog-to-digital converter; and a bus controller outputting the digital signal via an external serial bus. Accordingly, analog monitoring signals are received, converted into digital data, and output via serial bus even when a large number of analog monitoring signals are present, only if the address input to the apparatus is identical to unique address of the apparatus.

Abstract: Provided is a control unit of an oven. The control unit includes a board support panel, a first PCB, and a second PCB. The first PCB is installed on a backside of the board support panel, and the second PCB is installed on a front side of the board support panel.

Abstract: The present invention relates to a method for enhancing an image quality by saturation. The method includes the step of: determining a minimum gain value ‘SatGainMin’ and a maximum gain value ‘SatGainMax’ of a gain value ‘PGain’ of a pre-amplifier; defining a first to a third ranges based on the ‘SatGainMin’ and the ‘SatGainMax’; determining whether a currently used saturation value ‘USat’ is equal to or greater than approximately 1; determining whether the ‘PGain’ is less than the ‘SatGainMin’; performing saturation by using a value in the first range as an actual saturation value ‘ASat’ when ‘PGain’<‘SatGainMin’; determining whether the ‘PGain’ is equal to or less than the ‘SatGainMax’; performing saturation by using a value in the second range as the ‘ASat’ when ‘SatGainMin’?‘PGain’?‘SatGainMax’; and performing saturation by using a value in the third range as the ‘ASat’ when ‘PGain’>‘SatGainMax’.

Abstract: An apparatus for measuring Optical Beat Interference (OBI) noise is applied to a central office in a Subcarrier Multiple Access (SCMA) optical network. The central office includes an optical receiver for converting an optical signal received through an optical fiber into an electrical signal. The OBI noise measurement apparatus includes a power divider, first and second filters, and a power measurement unit. The power divider divides the power of a signal output from the optical receiver into two signals. The first filter passes one of the two signals divided by the power divider in a low band of frequencies below a band of subcarrier signals. The second filter passes the other of the two signals divided by the power divider in a high band of frequencies above the band of subcarrier signals. The power measurement unit measures the power of each signal passed through the first and second filters.

Abstract: An optical transceiver for transmitting light source control information, which is applied to a Subcarrier Multiplexing optical network, is disclosed. The optical transceiver includes a controller, an SCM frame generation/restoring unit, a modulator/demodulator, and an EO/OE converter. The controller controls transmission of light source control information or collects received light source control information. The SCM frame generation/restoring unit generates an SCM frame containing light source control information received from the controller. The modulator/demodulator modulates an SCM frame generated by the SCM frame generation/restoring unit into a signal suitable for transmission. The EO/OE converter converts a transmission signal modulated by the modulator/demodulator into an optical signal and transmits the optical signal through an optical fiber. An optical network having a telephone office OLT and subscriber ONTs, each having the optical transceiver, is also disclosed.

Abstract: An optical receiver for use in an Optical Network (ON) such as a WPON based on an SCMA scheme. The optical receiver apparatus for use in a Central Office contained in an ON includes: an optical power divider for dividing an input optical signal into first and second optical signals; a frequency generator for generating a oscillation frequency; a phase shifter for shifting a phase of the oscillation frequency; a first optical modulator for modulating the first optical signal with the oscillation frequency; a second optical modulator for modulating the second optical signal with the oscillation frequency phase-shifted; a first photodiode for converting the optical signal modulated by the first optical modulator into a first RF signal; a second photodiode for converting the optical signal modulated by the second optical modulator into a second RF signal; and a differential amplifier for differentially amplifying the first RF signal and the second RF signal.

Abstract: An oven door of an electric oven is provided. The oven door includes a front panel, a front frame, a heat-insulating material, a transparent heat-reflecting glass, a support frame, and a back panel. The front panel constitutes a front appearance and the front frame is disposed at the back of the front panel. The heat-insulating material seated at the back of the front frame cuts off heat and the heat-reflecting glass is disposed at the back of the heat-insulating material to reflect heat of the inside. The support frame includes bent planes and slitting planes for supporting the heat-reflecting glass at the edge of the heat-reflecting glass and the back panel supports the support frame to the front side.

Abstract: A capstan motor for a magnetic recording and reproducing apparatus includes a stator having a coil disposed on outer peripheral direction thereof, and a rotor having a magnet to correspond to coil and rotated by an electromagnetic interaction between the coil and the magnet. A capstan shaft is rotated integrally with the rotor, is fixed on the rotor and installed so that one side of the capstan shaft is cohered with a pinch roller taking a tape therebetween to drive the tape with the pinch roller. The magnet has a predetermined shape and is provided to apply magnetic force of the magnet eccentrically for an electromagnetic force generated on the coil so that a predetermined thrust can be applied to the capstan shaft toward one direction between upper and lower directions of the shaft direction.

Abstract: A mobile communication terminal with a multi-function key which serves as both a store key and a recall key. The mobile communication terminal includes a multi-function key; a memory for storing, in a function allocation table, input conditions of the multi-function key and corresponding functions for the respective input conditions; and a controller for determining a function of the multi-function key based on the function allocation table, when the multi-function key is pressed according to a given input condition. Further, the mobile communication terminal includes a memory for storing messages for informing a user about the determined function, and a display for displaying a message for informing the user of the determined function. The controller includes a flag, and sets the flag according to the function determined for the multi-function key.

Abstract: A capstan motor for a magnetic recording and reproducing apparatus comprises a stator including a coil; a rotor having a magnet to correspond the coil and rotated; and a capstan shaft rotated integrally with the rotor and installed so that one side of the capstan shaft is cohered with a pinch roller taking a tape therebetween to drive the tape with the pinch roller, wherein the magnet of a predetermined shape is provided to apply magnetic force of the magnet eccentrically for an electromagnetic force generated on the coil so that a predetermined thrust can be applied to the capstan shaft toward one direction between upper and lower directions of the shaft direction, therefore, a constant thrust in length direction of the capstan shaft is generated to minimize vibration of the tape, and thereby reliability for reproducing and recording of the magnetic recording and reproducing apparatus can be improved.

Abstract: A structure for pressing a cassette in a magnetic record and playback machine which includes a cassette holder having guide posts containing fixing slots on both lateral sides of the cassette holder, a driving arm having concave slots in which the guide posts are inserted, and an elastic supporting member surrounding the upper side and both lateral sides of the cassette holder. The upper part of the elastic supporting member has one or more folds which extend downward and both ends of the elastic supporting member are placed in the fixing slots of the guide posts, and both ends of the elastic supporting member are inserted into the concave slots of the driving arm along with the guide posts.