Abstract:
An apparatus for providing a terrestrial digital multimedia broadcasting (DMB) video service stores transport stream (TS) packets of a sub-channel of a video service to be transmitted through a communications network in association with a broadcasting network, in a stream DB, and when a request for a video stream in a bookmarked position is received through the communications network from a user, the apparatus searches the stream DB for a TS packet in the bookmarked position and transmits the searched TS packet through the communications network in an Internet protocol (IP) streamlining manner.
Abstract:
본 발명은 여러 지역에 설치되어 재난재해 발생시 이를 신속하게 알리는 재난방송장치에 관한 것으로, 보다 구체적으로는 수신된 지상파DMB 신호를 바탕으로 재난방송장치가 설치된 위치를 자동으로 감식할 수 있어 별도의 GPS모듈을 사용하지 않게 되어 배터리 소모를 최소화할 수 있고, 이동통신망 신호, 지상파DMB 신호 및 VHF 신호의 3중 통신망을 활용하면서 또한 우선순위를 설정하여 설정된 우선순위에 해당하는 신호가 먼저 방송되도록 하여 통신망의 다중화로 일부 통신망이 손상된 긴급 상황에서도 정상적인 재난방송이 이루어질 수 있도록 하고, 제어프로그램을 원격으로 업데이트시킬 수 있어 원격으로 제어프로그램의 업그레이드, 기능 추가·변경·삭제가 가능하여 유지보수의 효율성을 높이고, 아울러 인근 지역의 헬스케어기기의 RF 신호를 수신하여 수신된 응급환자 관련 정보를 인근 마을에 방송하여 구조대가 도착하기 전에 응급환자 상황을 인근 주민이 신속하게 파악하여 대처할 수 있도록 하는 재난방송장치에 관한 것이다.
Abstract:
본 발명은 IPDC 서비스를 제공하는 장치 및 방법에 관한 것이다. 본 발명에 따른 IPDC 서비스 제공 장치는, IP 패킷 및 IP 패킷의 시그널링 정보를 생성하는 데이터 입력부; IPDC 서비스의 특성에 기초하여 IP 패킷을 캡슐화하여 생성되는 IPDG 패킷의 타입을 결정하는 패킷 생성 제어부; IP 패킷의 데이터 타입에 따른 IPDG 패킷을 생성하고, IP 패킷의 시그널링 정보에 대한 IPDG 패킷을 생성하는 IPDG 패킷 생성부; 및 IPDG 패킷을 전송 스트림 패킷으로 생성하는 전송 스트림 패킷 생성부; 및 전송 스트림 패킷을 전송하는 전송부를 포함한다. 본 발명에 따르면, DAB 시스템에서 효율적으로 대역폭을 이용하면서 IPDC 서비스를 제공할 수 있다. IPDC, DAB, DMB, IP 패킷, 대역폭
Abstract:
The present invention relates to a multi-mode digital radio broadcasting receiving apparatus for receiving, decoding, and outputting a broadcasting signal according to various broadcasting standards, and a method thereof. A main controller controls a received broadcasting signal by outputting a control command and an operation code regarding a broadcasting standard to be received, and performs decoding using a CODEC suitable for the received broadcasting signal so that the broadcasting signal according to the various broadcasting standards may be received and output.
Abstract:
Disclosed are a digital radio receiver and a method for providing digital radio. The digital radio receiver according to one aspect of the present invention comprises: a first decoder which decodes a signal for a service A in a handover area where the service A and a service B respectively broadcasted in a first region and a second region are received at the same time to output a plurality of first frames; a second decoder which decodes a signal for the service B in the handover area to output a plurality of second frames; a first buffer which temporarily stores the plurality of first frames; a second buffer which temporarily stores the plurality of second frames; and a comparison and selection unit which compares the plurality of first and second frames respectively stored in the first and second buffers to check the same frame therebetween, checks, using the check result of the same frame, a frame among the plurality of second frames which is temporally consecutive to a frame finally outputted among the plurality of first frames during the handover of the digital radio receiver to the second region while outputting the plurality of first frames one by one in the handover region, and outputs the plurality of second frames one by one from the consecutive frame, wherein the service A and the service B are broadcasting having the same service ID. [Reference numerals] (211) First RF unit;(221) First baseband unit;(222) Second baseband unit;(231) First decoder;(241) First buffer;(242) Second buffer;(250) Comparison/selection unit;(AA) Second RF unit;(BB) Second decoder
Abstract:
PURPOSE: A disaster broadcast providing apparatus and a method thereof are provided to provide a disaster broadcast service only in an area where a disaster situation is generated. CONSTITUTION: A control unit of a monitoring unit relays a digital multimedia broadcasting (DMB) signal to a broadcast receiver which is in a signal reaching range. The control unit receives one or more data which are measured in a sensor which is installed in a specific location. The disaster situation determining unit of the monitoring unit determines a disaster situation based on the one or more data. A wake-up generating unit generates a disaster broadcast signal and a wake-up signal in order to wake up the broadcast receiver which is in a broadcast termination mode when a disaster situation is generated (S612). A wake-up synthesizing unit transmits the disaster broadcast signal and the wake-up signal by disconnecting the relay of the DMB broadcast signal (S614). [Reference numerals] (AA) No; (BB) Yes; (S600) Receive a signal that a disaster occurs; (S602) Receive a service stream for the situation of the disaster; (S604) Encoding and multiplexing; (S606) Generate a disaster broadcast signal; (S608) Transmit the disaster broadcast signal; (S610) Receive a wake-up request signal?; (S612) Generate a wake-up signal; (S614) Synthesize and transmit the wake-up signal; (S616) Transmit the synthesized signal
Abstract:
PURPOSE: Device, method thereof for automatically linking an adjacent channel broadcasting service in mobile digital broadcasting environment and computer-readable recording medium recording a broadcasting service automatic linking program for the same are provided to maximize the convenience of a broadcasting service user in consideration of transport protocol expert group (TPEG) preferred reception, service preference, existing reception history, similar service list database and et cetera. CONSTITUTION: When separation of a mobile digital broadcasting service from a serviced area due to area change is detected, a control unit (205) compares service identification (ID) of an existing broadcasting service received in a serviced area before the separation from a first database of a memory unit with current service ID. The control unit obtains a broadcasting item having the same service ID from a newly entered serviced area. The control unit configures the obtained broadcasting service item as a similar service. The control unit controls a wireless unit to link a channel to the similar service. [Reference numerals] (201) Wireless unit; (203) Decoder unit; (205) Control unit; (207) Memory unit; (209) User IF unit; (211) Image providing unit
Abstract:
PURPOSE: A re-multiplexer for emergency T-DMB(Terrestrial-Digital Multimedia Broadcasting) is provided to convert the ETI(Ensemble Transport Interface) of emergency broadcasting into the ETI of the T-DMB. CONSTITUTION: An emergency T-DMB re-multiplexer(140) creates an ensemble structure according to a T-DMB analysis unit and a T-DMB encoding unit. The emergency T-DMB re-multiplexer selects the set encoding stream. The T-DMB emergency re-multiplexer converts MPEG2(Moving Picture Experts Group2) into MPEG4. The emergency T-DMB re-multiplexer replaces service components of the ensemble structure. [Reference numerals] (110) T-DMB receiving unit; (120) T-DMB analyzing unit; (130) Emergency T-DMB encoder; (140) Emergency T-DMB re-multiplexer; (200) OFDM modulator; (300) High power amplifier
Abstract:
PURPOSE: A broadcast system for providing an HTTP streaming video service in a digital multimedia broadcast is provided to supply a streaming video service using an HTTP protocol. CONSTITUTION: An encoder(110) encodes video content. The encoder generates a plurality of bit streams with different bit rates. A splitter(120) splits each bit stream into segments. A segment information generator(140) generates control information about each segment. A DMB transmitting unit(130) transmits the segments and the control information to a DMB terminal. [Reference numerals] (110) Encoder; (120) Splitter; (130) DMB transmitting unit; (140) Segment information generator; (150) Internet transmitting unit; (AA) Video content
Abstract:
PURPOSE: An underground digital integrated radio network repeater is provided to relay a digital signal according to a division amplification method in a channel by converting a public wave broadcast signal into a digital signal. CONSTITUTION: An apparatus management unit(150) monitors operation states according to signals detected from an AM(Amplitude Modulation) digital multiple channel repeater, an FM(Frequency Modulation) digital multiple channel repeater, a DMB(Digital Multimedia Broadcasting) repeater, and an external wireless communication repeater. An output combination unit(170) combines signals inputted from the external wireless communication repeater, the DMB repeater, and FM digital multiple channel repeater in order to transmit the signal using one transmission cable. An AM transmission unit transmits the signal inputted from the AM digital multiple channel repeater. An FM transmission unit transmits a signal inputted from the output combination unit. [Reference numerals] (102) Antenna reception unit; (110) Emergency broadcasting unit; (130) Automatic switchover unit; (150) Apparatus management unit; (170) Output combination unit; (180) AM digital multiple channel repeater; (182) FM digital multiple channel repeater; (184) Ground wave DMB digital multiple channel repeater; (186) External wireless communication repeater; (188) Police radio; (190) Firefighting radio; (192) TRS; (200) First distributer; (202) First impedance adapter; (204) Second distributor; (206) Third distributor; (208) Fourth distributor; (210) Second impedance adapter; (212) Third impedance adapter; (214) First AM induction line; (216) First leakage coaxial cable; (218) Second leakage coaxial cable; (220) Second AM induction line; (222) Third leakage coaxial cable; (224) Third AM induction line; (226) End resistance; (228) End resistance; (230) End resistance; (232) End resistance; (234) End resistance; (236) End resistance