Abstract:
PURPOSE: An ATSC-MH packet type finder and an ATSC-MH broadcast signal generator for detecting the validity of the extracted MHE packet are provided to detect whether a receiving signal is ATSC receiving unit result data or the MHE packet of an ATSC-MH MUX according to the validity of the MHE packet. CONSTITUTION: A signaling data extracting unit of an ATSC-MH packet type finder(120) performs de-formatting and convolutional coding about the PID. The signaling data extracting unit extracts the data presumed as signaling data. The ATSC validation unit of the ATSC-MH packet type finder determines the validity as the signaling data. The ATSC validation unit determines whether the packets are valid as the MHE packet.
Abstract:
PURPOSE: A device including a broadcast signal parameter setting system and a computer readable recording medium thereof are provided to easily perform a parameter setting operation about an ensemble of a broadcast signal and a service using an inquiry system. CONSTITUTION: A main stream setting unit selects or inputs a main stream(100). An ensemble setting unit includes a manual and automatic ensemble parameter setting unit. The manual ensemble parameter setting unit enables a user to select or input a basic ensemble parameter corresponding to the selected main stream. A service setting unit includes a manual and automatic service parameter setting unit. A setting result display unit displays setting result of the units to a user.
Abstract:
A broadcasting signal generator for normal operation detection of a DMB(Digital Multimedia Broadcasting) receiver and a normal operation detecting system are provided to reappear the same broadcasting provision environment as real situation by simultaneously transmitting broadcasting signals of a frequency band corresponding to plural broadcasting stations by all-in-one system according to a programmed state. A multiplexer(110) receives signals from plural encoders and multiplexes the received signals. A modulator(120) modulates the signal inputted from the multiplexer. A splitter(130) divides the signal, inputted from the modulator, into plural frequency components and outputs the divided frequency components. RF(Radio Frequency) up-converters(151~156) convert the frequency component, divided and inputted by the splitter, into a signal of a specified frequency band and transmit the converted signal. The splitter further comprises a tuner for tuning a signal so as to be suitable for characteristics for each frequency components.
Abstract:
PURPOSE: A UHDTV transmitting system and a UHDTV MUX are provided to transmit residual main UHDTV broadcasting data by using an additional ground wave channel and to transmit a part of UHDTV broadcasting data instead of a part of null data transmitted from an HD ground wave channel. CONSTITUTION: A UHDTV input unit (200) receives UHDTV data. A UHDTV MUX(210) adds a part of UHDTV data instead of a part of HD broadcasting signal null data to generate a first ground wave broadcasting signal. The UHDTV MUX adds the null data to residual UHDTV data to generate a second ground wave broadcasting signal. A first ground wave transmitting unit (150) transmits the ground wave broadcasting signal. A second ground wave transmitting unit (250) transmits the second ground wave broadcasting signal.
Abstract:
PURPOSE: An image providing device, a method, an image reproduction device, and a method are provided to more efficiently restore a right image of low resolution than a left image of high resolution. CONSTITUTION: An image identifying unit(201) identifies a reference image of high resolution and an additional image of low resolution. A restoration mode determination unit(202) determines a restoration mode of the additional image of the low resolution. A data transmission unit(203) transmits additional information including the reference image of the high resolution, the additional image of the low resolution, and the restoration mode. [Reference numerals] (200) Image providing device; (201) Image identifying unit; (202) Restoration mode determination unit; (203) Data transmission unit
Abstract:
PURPOSE: A broadcast receiver for both advanced television systems committee(ATSC) and ATSC-mobile/handheld broadcasts is provided to smoothly receive the ATSC and ATSC-mobile/handheld broadcasts without degradation of receive sensitivity and receive failure. CONSTITUTION: An ATSC(Advanced Television System Committee) baseband converter(35) converts an IF(Intermediate Frequency) signal of a tuner into an ATSC baseband signal. An ATSC-mobile/handheld(MH) baseband converter(36) converts the IF signal into an ATSC-MH baseband signal. A switching device(40) switches the IF signal and an AGC(Auto Gain Control) signal according to a selected broadcast mode. The switching device controls a switching process in order to provide feedback only with the AGC signal. A control block(50) controls each part.
Abstract:
PURPOSE: An ATSC-MH broadcasting signal reconfiguration method, a module thereof, an ATSC-MH broadcasting receiver and a storage medium thereof are provided to reconfigure ATSC-MH encoded group format data from main stream data generated from an ATSC broadcasting receiver receiving an ATSC-MH RF broadcasting signal. CONSTITUTION: A main stream generating module(110) outputs main stream data including a MHE(Mobile Handheld Encapsulation) packet by passing an ATSC-MH(Advanced Television System Committee-Mobile Handheld) RF(Radio Frequency) signal through an existing ATSC receiver. An ATSC-MH broadcasting signal reconfiguring module(120) extracts identical PID(packet ID) slot data in the main stream data and reconfigures the ATSC-MH encoded group format data from the MHE packet. A mobile stream generating module(130) outputs mobile stream data from the ATSC-MH encoded group format data.
Abstract:
An IF(Intermediate Frequency) signal generator and a modulation unit of a digital broadcast signal generating apparatus are provided to reduce production costs of a modulator for a digital broadcast or a mobile broadcast by enabling manufacturing of modulators supporting various transmission standards. A PCI(200) prevents the occurrence of noise of symbol data in the transmission using an I, Q signal. An input buffer(310) receives symbol data. A variable clock generator(320) generates a variable clock signal according to conditions of an externally set transmission standard to adjust an input speed of the symbol data of the input buffer. A modulation unit(330) selects one of a plurality of modulation modules according to the conditions of the externally set transmission standard, and performs a pre-set modulation scheme according to the variable clock signal. An IF signal generating unit(350) generates the modulated signal into an IF signal according to the variable clock signal of the variable clock generator. The modulation unit includes at least two of QPSK(Quadrature Phase Shift Keying), VSB, QAM(Quadrature Amplitude Modulation) and OFDM(Orthogonal Frequency Division Multiplexing) modulation modules(331-334).
Abstract:
본 발명은 시험장치에 관한 것으로, 더욱 상세하게는 원격에서 디지털 방송 수신기의 수신상태 및 수신성능을 시험하기 위한 시험장치에 관한 것이다. 본 발명에 따른 디지털 방송용 단말기의 테스트 장치는 입력 또는 출력 수단을 제공하는 입출력 모듈, 사용자의 설정에 따른 시험용 방송신호 프레임이 구성되도록 제어하는 제어 모듈, 프레임의 서브 프레임을 구성하는 엔진 모듈 및 엔진 모듈에서 구성된 프레임을 이용하여 시험용 방송신호로 송출하는 송출 모듈를 포함하되, 송출 모듈은 하나의 시험용 방송신호를 방송하며, 송출 모듈은 하나 이상의 시험용 방송신호를 방송하기 위하여 적어도 하나 이상의 송출 모듈을 포함하는 것을 특징으로 이루어진다. 시험장치, 디지털 방송, 단말기, 수신기, 수신상태, 신호처리, 성능시험