Abstract:
Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. A receiver, to automatically switch from presenting a service on a first frequency to a second frequency such as when a mobile receiver is moving through a boundary region between two broadcasters, can consider not just signal strength and error rates of two frequencies carrying the same service to select which frequency to tune to, but also relative location and direction of motion of the receiver with respect to each broadcaster along with parameters of the RF environment as previously measured by an autonomous vehicle such as a drone.
Abstract:
서버의 제어부는 복수의 서비스 센터 각각으로부터 복수의 디스플레이 장치 각각에 대한 불량 수집 정보를 수신하고, 불량 수집 정보에 기초하여 불량 해결 정보를 획득하며, 불량 해결 정보를 복수의 디스플레이 장치 각각으로 전송한다. 사용자가 불량을 파악하기 전에 미리 해당 불량에 대한 해결 방안을 제공하여 줌으로써, 사용자의 편의성을 증진시킬 수 있고, 지역별 또는 국가별로 기존에 존재하지 않았던 새로운 불량이 발생되더라도, 그 불량에 대한 불량 해결 정보를 복수의 디스플레이 장치로 제공하여, 해당 불량이 용이하게 조치되도록 하는 장점이 있다.
Abstract:
Systems and methods for one-way time transfer using physical layer signaling are disclosed herein. According to some examples, a method includes generating timing information based on a clock of a transmitting device, where the timing information comprises a timestamp and metadata. The method further includes generating a preamble of a frame, where the preamble includes the timestamp and the metadata of the timing information. The method also includes forming a frame, where the frame comprises a bootstrap, the preamble, and a payload, and transmitting the frame to a receiver device. The one-way time transfer systems and methods of this disclosure can serve mobile devices that entail quick and reliable establishment of a clock.
Abstract:
The present document relates to audio signal processing, in particular to an apparatus and a corresponding method for improving an audio signal of an FM stereo radio receiver. In particular, the present document relates to a method and system for reliably detecting the quality of a received FM stereo radio signal and for selecting an appropriate processing based on the detected quality. An apparatus (20) configured to estimate the quality of a received multi-channel FM radio signal is described. The received multi¬ channel FM radio signal is representable as a mid signal and a side signal, and the side signal is indicative of a difference between a left signal and a right signal. The apparatus (20) comprises a power determination unit configured to determine (101) a power of the mid signal, referred to as mid power, and a power of the side signal, referred to as side power; a ratio determination unit configured to determine (102) a ratio of the mid power and the side power, thereby yielding a mid-to-side ratio; and a quality determination unit configured to determine (105) a quality indicator of the received FM radio signal based at least on the mid-to-side ratio.
Abstract:
A method is described for identifying transmitters (5-8) belonging to a single frequency network which transmit respective digital terrestrial radio-television signals, wherein each transmitter (5-8) transmits its own identifier coded in the service carriers of a plurality of N symbols (S40-S47) of a frame of the digital terrestrial radio-television signal, said method comprising the steps of: a) resolving, in the frequency domain and with respect to H, a linear system Y = X · H, wherein the indexes i and j vary between 1 and N, and wherein: - Y is a vector of N elements, wherein one element Y i of the vector Y represents a digital terrestrial radio-television signal acquired through a receiver (13) and relating to the i-th symbol of the plurality of N symbols of the frame; - X is a matrix having NxN size, wherein one element X ji of the matrix X represents a signal contribution that the receiver (13) would receive if the j-th transmitter were the only one to transmit on an ideal transmission channel the digital terrestrial radio-television signal relating to the i-th symbol; - H is a vector of N elements, wherein the element H, of the vector H represents the channel frequency response relating to the i-th transmitter; b) identifying each transmitter (5-8) through the respective identifier and the respective channel frequency response module.
Abstract:
본 발명은 학교에 설치되어 방송과 통신 서비스를 지원하는 학교용 방송 통신 융합 시스템에 관한 것으로서, 방송신호와 통신 신호를 서로 다른 파장을 갖는 광신호들로 다중화하여 융합된 통신 방송 광신호를 광섬유를 통해 전송하는 방송/통신 융합부와, 방송/통신 융합부에서 전송된 광신호를 수신하여 파장대별로 역다중화하여 분리된 광신호인 방송신호와 통신 신호를 대응되는 종단 단말기로 전송하는 수신부를 구비하고, 수신부는 실내의 온도를 검출하는 온도센서가 마련된 센서부와, 방송/통신 융합부에서 전송된 신호의 처리를 제어하며, 센서부의 온도센서에서 출력되는 신호를 수신받아 검출된 온도를 표시부를 통해 표시하는 수신제어부를 더 포함한다. 이러한 학교용 방송 통신 융합 서비스 시스템에 의하면, 방송과 통신을 통합하여 서비스 할 수 있으면서도, 교실내의 온도 정보, 학생유무정보, 탄소농도정보를 검출하여 관리서버로 제공할 수 있어 교실내의 환경에 대한 모니터링을 용이하게 할 수 있고, 기기의 활용도를 높일 수 있는 장점을 제공한다.