Abstract:
PURPOSE: An unmanned transport apparatus and a method thereof are provided to prevent the error from detecting the distance to a destination location, and to economically install the apparatus. CONSTITUTION: An unmanned transport apparatus(100) comprises a calling unit(10), a navigation guide unit(20), an image recognition unit(30), and a controller(40). The calling unit supplies destination information by the calling signal from a communications device(S6). A navigation guide unit recognizes the current position by using a digital map(S1), and detects an optimal path to the destination.
Abstract:
PURPOSE: By using the size of the QAM symbol the frame synchronization method and apparatus thereof can show the excellent frame synchronization performance regardless of the carrier frequency deviation. CONSTITUTION: The sync pattern which uses the size by using the QAM symbol size is composed(710). The received vector in which the size is computed in order to symbol-by-symbol and using the size is composed(714). The frame synchronization obtains based on correlation between the sync pattern using the size and the received vector using the size. In correlation between the sync pattern using the size and the received vector using the size, calculation operates(720). Correlation decides the estimate in which the operation result most highs with the start range of frame and the frame synchronization obtains.
Abstract:
PURPOSE: An ultra high definition DVD recording device and reproducing device and a control method of the devices are provided to enable store and reproduce 4K-over video and multi channel audio by applying the synchronization function between separated data. CONSTITUTION: A control method of the ultra high definition DVD recording device comprises next steps. Each of audio data, video data, and caption data are divided to a plurality of sections. The sampling rate of a plurality of audio data is varied or at least one of the frame rate, the color space, and the chromacity type of a plurality of video data is varied. An optical writer(115) storing data in a recording media is controlled to store the title information and the and separation information of a plurality of audio data, a plurality of video data and a plurality of caption data, a plurality of audio data, a plurality of video data, and a plurality of caption data are stored in the recording media.
Abstract:
PURPOSE: A method port apparatus and a composition method for a robot software component are provided to call up a method for calling up a specific function of a component in a circumference in which class implementation is different in order to enhance the reliability in the development. CONSTITUTION: A remote method agent module(112) performs a message encoding and decoding function for a remote method call. When a second component provider method port corresponding to a requestor method port module exists in a remote place, a method port connector module(114) performs inter-component communication by configuring an inter-port message format. A method port management module processes the searching request for the provider method port or inter-port connection.
Abstract:
입력 주파수와 출력 주파수가 상이한 중계기는 상기 입력 주파수로 수신되는 수신 신호를 중간 주파수 변환용 국부 발진 주파수에 근거하여 제1 중간 주파수 신호로 변환하고, 제1 중간 주파수 신호를 디지털 처리하여 제2 중간 주파수 신호로 변환한다. 그런 후에, 입력 주파수와 출력 주파수의 차에 해당하는 제1 주파수 톤 신호를 생성하고, 중간 주파수 변환용 국부 발진 주파수 및 생성된 제1 주파수 톤 신호로부터 제2 주파수 톤 신호를 생성한다. 이렇게 생성된 제2 주파수 톤 신호에 근거하여 제2 중간 주파수 신호를 출력 주파수로 상향 변환하여 송신 신호를 송출한다. 중계기, 주파수, 국부 발진 주파수, 동기
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 방송 시스템에서 데이터 전달 망을 이용한 역방향 데이터 전송 방법과 그를 위한 역방향 데이터 전송 관리 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 방송 시스템의 양방향 서비스를 위한 역방향 데이터 전송 방식에서 단말들 간에 '데이터 전달 망'(메쉬 망 또는 멀티홉 릴레이 망)을 구성함으로써, 별도의 중계기 없이 역방향 채널 용량을 증대시키고 음영 지역을 해소할 수 있는, 방송 시스템에서 데이터 전달 망을 이용한 역방향 데이터 전송 방법과 그를 위한 역방향 데이터 전송 관리 방법을 제공하는데 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은, 방송 시스템의 기지국으로 역방향 데이터를 전송하고자 하는 방송수신 단말에서의 역방향 데이터 전송 방법에 있어서, 전송 대상이 되는 역방향 데이터에 대하여 역방향 채널을 통하여 상기 기지국으로 직접 전송을 시도하는 직접전송 시도 단계; 및 상기 직접전송 시도 단계에서 역방향 데이터의 직접 전송이 실패하면, 상기 역방향 데이터를 브로드캐스팅 방식으로 상기 기지국과 인근 단말로 전송하는 전송 단계를 포함함. 4. 발명의 중요한 용도 본 발명은 방송 시스템의 역방향 채널용량 증대 및 음영지역 해소 등에 이용됨. 지상파 방송, 메쉬 망, 멀티홉 릴레이 망, 역방향 채널, 음영 지역, 데이터 전달 망
Abstract:
A non-real time-based digital real sense broadcast transmitting/receiving system and its method are provided to guarantee a complete lower compatibility with an existing 2D digital broadcast transmission system and avoid degradation of picture quality of 2D images. A broadcast TS(Transport Stream) generating unit(110) generates a TS with respect to a 2D image and supplementary information required for a real sense broadcast of the 2D image. A transmission unit(120) transmits the supplementary information TS, among TSs generated by the broadcast TS generating unit, before a corresponding broadcast time, and transmits 2D image TS according to a broadcast schedule. A supplementary information acquiring unit acquires the 2D image and the supplementary information from digital broadcast contents.
Abstract:
A cleaner and a method of operating the same are provided to control the cleaner remotely and monitor cleaning state of inside the house by transmitting control signals and receiving image data, so that the cleaner can perform cleaning operation in an unmanned state. A method of operating a cleaner comprises the steps of: receiving an image data from a data processing unit and transmitting it to a terminal(S210); displaying the received image data(S220); transmitting a control signal to the cleaner after the image data has been observed by a user(S230); and operating the cleaner according to the control signal(S240).
Abstract:
A method and an apparatus for a hierarchical modulation using a pilot, and a method and an apparatus for receiving a hierarchically modulated signal are provided to improve a reception property by additionally transmitting a pilot signal with a modulated data signal. A hierarchical modulation apparatus includes a first encoder(10), a second encoder(11), a pilot insertion portion(12), and a hierarchical modulator(13). The first encoder encodes a first hierarchical signal stream. The second encoder encodes a second hierarchical signal stream. The pilot insertion portion inserts a pilot signal to the signal stream, which is encoded in the second encoder. The hierarchical modulator encodes the signals which are outputted from the first encoder and the pilot insertion portion, and combines the encoded results with each other.
Abstract:
An apparatus and a method for estimating a channel in a receiving system based on hierarchical modulation are provided to estimate the channel without a training signal by estimating the channel through applying a weighted value to a high priority transmission signal and a low priority transmission signal. An apparatus for estimating a channel in a receiving system based on hierarchical modulation includes a demodulating unit(21), a channel equalizing unit(22), a transmission signal estimating unit(23), and a channel estimating unit(24). The demodulating unit transforms a received signal to a signal of a frequency area. The channel equalizing unit performs channel equalizing by using the signal of the frequency area demodulated by the channel equalizing unit and a previously estimated channel. The channel estimating unit estimates the signal of the frequency area demodulated by the demodulating unit, and a high priority transmission signal and a low priority transmission signal. The channel estimating unit estimates the channel by applying weighted values to the high priority transmission signal and the low priority transmission signal estimated by the transmission signal estimating unit.