KR20230146277A - Emergency delivery system and its method - Google Patents

Emergency delivery system and its method Download PDF

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KR20230146277A
KR20230146277A KR1020220045048A KR20220045048A KR20230146277A KR 20230146277 A KR20230146277 A KR 20230146277A KR 1020220045048 A KR1020220045048 A KR 1020220045048A KR 20220045048 A KR20220045048 A KR 20220045048A KR 20230146277 A KR20230146277 A KR 20230146277A
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emergency
broadcast
broadcasting
signal
emergency broadcast
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신동수
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주식회사 엠플러스통신
삼일아이앤씨(주)
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G08B27/008—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via TV or radio broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/40—Arrangements for broadcast specially adapted for accumulation-type receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks

Abstract

본 발명은 공공건물이나 공공장소 등에서 일반인뿐만 아니라 외국인이나 청각장애인에게 TV를 통하여 음향과 함께 고화질 영상으로 비상상황에 대한 정보와 대피정보안내 등을 실시간으로 현장감 있게 전달함으로써, 경각심을 일으키는 동시에 재해 및 재난으로 인한 인명 사고를 최소화할 수 있는 것으로,
일반적인 방송을 송출하다 비상시에 비상방송으로 전환하여 외부저장장치의 자료를 이용하여 송출하는 비상시 외부저장장치의 영상송출시스템과 그 것의 제어방법에 관한 것이다.The present invention provides realistic real-time information on emergency situations and evacuation information through TV with sound and high-definition images to not only the general public but also foreigners and hearing-impaired people in public buildings and public places, thereby raising awareness and raising awareness of disaster and disaster prevention. It is possible to minimize casualties caused by disasters.
This relates to a video transmission system for an external storage device in an emergency that transmits a general broadcast, then switches to an emergency broadcast in an emergency and transmits it using data from an external storage device, and its control method.

Description

비상시 외부저장장치의 영상송출시스템과 그 것의 제어방법{EMERGENCY DELIVERY SYSTEM AND ITS METHOD}Video transmission system of external storage device in case of emergency and its control method {EMERGENCY DELIVERY SYSTEM AND ITS METHOD}

본 발명은 일반적인 방송을 송출하다 비상시에 비상방송으로 전환하여 외부저장장치의 자료를 이용하여 송출하는 비상시 외부저장장치의 영상송출시스템과 그 것의 제어방법에 관한 것이다.The present invention relates to a video transmission system for an external storage device in an emergency that transmits a general broadcast, then switches to an emergency broadcast in an emergency and transmits the video using data from the external storage device, and a method for controlling the same.

일반적으로 영상송출제어방법은 지상파 방송신호와 같은 디지털 방송의 메인방송신호를 수신하여 튜닝하는 튜너와 상기 튜너에 수신된 메인방송신호를 변조시키는 변조부와, 변조된 메인방송신호를 주파수변환하여 송출시키는 송출부 및 이를 제어하는 제어부로 구성되어 있으며, 일정한 규모 이상의 건물이나 공공장소에서 비상상황발생시 비상신호나 오디오와 영상 안내방송을 통해 비상상활 방생을 알리도록 하고 있었다.In general, a video transmission control method includes a tuner that receives and tunes the main broadcasting signal of digital broadcasting, such as a terrestrial broadcasting signal, a modulator that modulates the main broadcasting signal received by the tuner, and frequency conversion of the modulated main broadcasting signal to be transmitted. It consists of a transmitting unit and a control unit that controls it, and when an emergency situation occurs in a building or public place of a certain size or larger, emergency response is notified through emergency signals or audio and video announcements.

대한민국등록특허 제10-0572056호Republic of Korea Patent No. 10-0572056

종래에는 일반방송과 비상방송을 구별할수 있는 별도의 제어유닛을 구비하거나 셋톱박스가 제공되어야 하는 IP/CATV망에서는 비상방송을 제공받을 수 있지만, MATV와 같은 일반적 방송망시스템에는 구비되지 못한 단점이 있다.Conventionally, emergency broadcasting can be provided in an IP/CATV network that requires a separate control unit to distinguish between general broadcasting and emergency broadcasting or a set-top box, but it has the disadvantage of not being provided in a general broadcasting network system such as MATV. .

따라서 본 발명은 일반적인 방송을 송출하다가 재난 시에 비상방송으로 절체하여 다시 송출하는 것으로 외부저장장치에 저장해둔 영상물을 즉각적으로 국내지상파 디지털 방송포맷에 맞게 송출하는 것이다.Therefore, the present invention transmits general broadcasting, then switches to emergency broadcasting in the event of a disaster, and transmits video stored in an external storage device immediately in accordance with the domestic terrestrial digital broadcasting format.

디지털 비상방송 장치에 있어서,In the digital emergency broadcasting device,

비상방송 콘텐츠를 저장하고 있는 저장부; 메인방송 신호를 수신하여 처리하기 위한 튜너; 평상시 일반적인 방송을 송출하다가 비상 상황 발생에 따라 외부의 비상 전파 시스템으로부터 비상방송 신호를 수신하면, 상기 저장부를 제어하여 비상방송 콘텐츠를 출력하도록 하고, 메인제어부로부터의 방송 신호를 상기 저장부로부터의 비상방송 콘텐츠로 절체하도록 제어하기 위한 제어 신호를 받아 비상방송 콘텐츠로 절체하는 저장된비상방송절체동작을 하는 방송절체제어부; 및 상기 방송절체제어부로부터의 메인방송신호 또는 비상방송 콘텐츠를 변조하기 위한 변조부 및 송출부를 포함하며A storage unit storing emergency broadcast content; Tuner for receiving and processing main broadcasting signals; When an emergency broadcast signal is received from an external emergency radio system when an emergency situation occurs while normal broadcasting is normally transmitted, the storage unit is controlled to output emergency broadcast content, and the broadcast signal from the main control unit is transmitted to the emergency broadcast signal from the storage unit. a broadcast switching control unit that receives a control signal for controlling switching to broadcast content and performs a stored emergency broadcast switching operation to switch to emergency broadcast content; And a modulation unit and a transmission unit for modulating the main broadcast signal or emergency broadcast content from the broadcast switching control unit.

상기 저장부는 미리 MPEG2 TS의 형태로 제작된 비상방송 콘텐츠를 저장하고 있다가 상기 비상방송 제어부의 제어에 따라 비상방송 콘텐츠를 상기 방송절체제어부로 출력하고, The storage unit stores emergency broadcast content produced in advance in the form of MPEG2 TS and outputs the emergency broadcast content to the broadcast switching control unit under the control of the emergency broadcast control unit,

상기 변조부는 평상시에는 상기 방송절체제어부로부터의 MPEG2 TS 형태의 디지털 지상파 방송 신호를 디지털 지상파 방송 규격인 8VSB신호로 변조하여 RF방송망시스템 측으로 송출하다가, 비상 상황 발생 시에는 상기 방송절체제어부로부터의 MPEG2 TS 형태의 비상방송 콘텐츠를 디지털 지상파 방송 규격인 8VSB 신호로 변조하여, 시청하고 있던 실시간 디지털 지상파 방송과 동일한 RF로 동일한 RF 채널을 통해 비상방송을 MATV방송망 시스템측으로 송출하는 것을 특징으로 한다.In normal times, the modulation unit modulates the digital terrestrial broadcasting signal in the form of MPEG2 TS from the broadcasting switching control unit into an 8VSB signal, which is the digital terrestrial broadcasting standard, and transmits it to the RF broadcasting network system. However, in an emergency situation, the modulation unit modulates the digital terrestrial broadcasting signal in the form of MPEG2 TS from the broadcasting switching control unit to the RF broadcasting network system. The emergency broadcasting content is modulated into an 8VSB signal, which is a digital terrestrial broadcasting standard, and the emergency broadcast is transmitted to the MATV broadcasting network system through the same RF channel as the real-time digital terrestrial broadcasting being watched.

상기 비상방송송출과정에서는 비상방송을 스트림하기위해 정보를 업데이트하고 정상적인 영상을 제공하기위한 비상방송스트림과정을 포함하고,The emergency broadcast transmission process includes an emergency broadcast stream process to update information to stream the emergency broadcast and provide normal video,

상기 비상방송스트림과정은 가상채널숫자를 유지하고 가상채널이름을 변경하는 PID 변경동작, 자동으로 카운터를 부여하는 Auto CC동작, 기존의 널데이터를지우고 datarate에 맞게 재생성하는 널패킷재생성동작과, 널패킷 및 PID 변경에 타이밍(Timing)을 재 조정하는 PCR리스탬핑동작으로 이루어지는 것을 특징으로 한다.The emergency broadcast stream process includes a PID change operation that maintains the virtual channel number and changes the virtual channel name, an Auto CC operation that automatically assigns a counter, a null packet regeneration operation that erases existing null data and regenerates it according to the data rate, and a null packet regeneration operation that erases existing null data and regenerates it according to the data rate. It is characterized by a PCR restamping operation that readjusts the timing in response to packet and PID changes.

본 발명은 공공건물이나 공공장소 등에서 일반인뿐만 아니라 외국인이나 청각장애인에게 TV를 통하여 음향과 함께 고화질 영상으로 비상상황에 대한 정보와 대피정보안내 등을 실시간으로 현장감 있게 전달함으로써, 경각심을 일으키는 동시에 재해 및 재난으로 인한 인명 사고를 최소화할 수 있다.The present invention provides realistic real-time information on emergency situations and evacuation information through TV with sound and high-definition images to not only the general public but also foreigners and hearing-impaired people in public buildings and public places, thereby raising awareness and raising awareness of disaster and disaster prevention. Casualties caused by disasters can be minimized.

도 1은 본 발명의 실시예의 비상시 외부저장장치의 영상송출시스템과 그 것의 제어방법를 도시한 개요도.
도 2는 본 발명의 실시예의 비상시 외부저장장치의 영상송출시스템과 그 것의 제어방법를 도시한 저장된비상방송절체동작를 보인 예시도.1 is a schematic diagram showing a video transmission system of an external storage device in an emergency and a control method thereof according to an embodiment of the present invention.
Figure 2 is an example diagram showing a stored emergency broadcast switching operation showing a video transmission system of an external storage device and its control method in an emergency of an embodiment of the present invention.

본 발명은 비상 상황 발생(재난 또는 화재, 지진, 해일과 같은 상황)시 기존의 비상 전파 시스템(아파트화재감지기능의 신호 또는 관리자,소방재난시스템신호)으로 비상방송신호를 전달받으면, 평상 시 송출하고 있던 디지털 지상파 방송 신호를 차단하고, 미리 제작하여 저장장치에 저장해 놓은 비상방송 콘텐츠로 절체하여 비상방송을 실시간으로 송출한다.In the present invention, when an emergency situation occurs (such as a disaster, fire, earthquake, or tsunami), an emergency broadcast signal is received through an existing emergency radio system (a signal from an apartment fire detection function or a signal from a manager or fire disaster system), and is transmitted as usual. It blocks digital terrestrial broadcasting signals, switches to emergency broadcasting content produced in advance and stored in a storage device, and transmits emergency broadcasting in real time.

본 발명은 디지털 비상방송 장치에 있어서, 비상방송 콘텐츠를 저장하고 있는 저장부; 메인방송 신호를 수신하여 처리하기 위한 튜너; 평상시 일반적인 방송을 송출하다가 비상 상황 발생에 따라 외부의 비상 전파 시스템으로부터 비상방송 신호를 수신하면, 상기 저장부를 제어하여 비상방송 콘텐츠를 출력하도록 하고, 메인제어부로부터의 방송 신호를 상기 저장부로부터의 비상방송 콘텐츠로 절체하도록 제어하기 위한 제어 신호를 받아 비상방송 콘텐츠로 절체하는 저장된비상방송절체동작을 하는 방송절체제어부; 및 상기 방송절체제어부로부터의 메인방송신호 또는 비상방송 콘텐츠를 변조하기 위한 변조부 및 송출부를 포함하여 구성한다.The present invention provides a digital emergency broadcasting device, comprising: a storage unit storing emergency broadcasting content; Tuner for receiving and processing main broadcasting signals; When an emergency broadcast signal is received from an external emergency radio system when an emergency situation occurs while normal broadcasting is normally transmitted, the storage unit is controlled to output emergency broadcast content, and the broadcast signal from the main control unit is transmitted to the emergency broadcast signal from the storage unit. a broadcast switching control unit that receives a control signal for controlling switching to broadcast content and performs a stored emergency broadcast switching operation to switch to emergency broadcast content; and a modulation unit and a transmission unit for modulating the main broadcast signal or emergency broadcast content from the broadcast switching control unit.

상기 저장된비상방송절체동작은 평상시에는 디지털 지상파 방송 신호(HD 지상파 방송 신호)를 수신하는 방송정보수신과정과, 디지털 지상파 방송 규격인 8VSB(8-level Vestigial SideBand) 신호로 변조하여 RF(Radio Frequency)로 MATV 방송망 시스템 측으로 송출하는 방송신호송출과정과, 화재나 지진 또는 테러 등의 비상 상황 발생 시 기존의 소방방재 시스템으로부터 각 상황에 따른 비상방송 접점신호를 수신하는 비상신호 수신과정, 평상 시 송출하고 있던 디지털 지상파 방송 신호를 차단하고, 미리 제작하여 MPEG2 TS(Moving Picture Experts Group 2 Transport Stream)의 형태로 저장되어 있는 비상방송 콘텐츠를 불러오는 비상신호 수신과정, 상기 비상방송 콘텐츠를 디지털 지상파 방송 규격인 8VSB 신호로 변조한 후, 시청하고 있던 실시간 디지털 지상파 방송과 동일한 RF로 비상방송을 송출하는 비상방송송출과정을 포함한다.The stored emergency broadcasting switching operation involves the broadcasting information reception process of receiving a digital terrestrial broadcasting signal (HD terrestrial broadcasting signal) in normal times, and the RF (Radio Frequency) signal by modulating it into an 8VSB (8-level Vestigial SideBand) signal, which is a digital terrestrial broadcasting standard. A broadcast signal transmission process that transmits to the MATV broadcasting network system, an emergency signal reception process that receives emergency broadcast contact signals according to each situation from the existing fire and disaster prevention system when an emergency situation such as a fire, earthquake, or terrorism occurs, and a broadcast signal transmission process that is transmitted in normal times. An emergency signal reception process that blocks existing digital terrestrial broadcasting signals and loads emergency broadcasting content produced in advance and stored in the form of MPEG2 TS (Moving Picture Experts Group 2 Transport Stream), and transmits the emergency broadcasting content to 8VSB, the digital terrestrial broadcasting standard. It includes an emergency broadcast transmission process that modulates the signal and then transmits the emergency broadcast through the same RF as the real-time digital terrestrial broadcast being watched.

저장부에 설치된 비상방송 콘텐츠는 압축 영상물로서 방송사업자 또는 사용자가 용도에 맞게 제작한 일반적인 영상인 MPEG-TS Stream으로 구성된다. The emergency broadcast content installed in the storage unit is a compressed video and consists of an MPEG-TS Stream, a general video produced by broadcasters or users to suit the purpose.

상기 비상방송송출과정에서는 비상방송을 스트림하기위해 정보를 업데이트하고 정상적인 영상을 제공하기위한 비상방송스트림과정을 동작한다.In the emergency broadcast transmission process, information is updated to stream the emergency broadcast and an emergency broadcast stream process is operated to provide normal video.

상기 비상방송스트림과정은 PID 변경동작, Auto CC(Continuity Counter)동작The emergency broadcast stream process includes PID change operation and Auto CC (Continuity Counter) operation.

널패킷(Null paket)재생성동작, PCR 리스탬핑(Re-stamping)동작으로 이루어진다.It consists of a null packet regeneration operation and a PCR re-stamping operation.

상기 PID변경동작은 기존의 가상채널유지를 위한것으로, 가상채널 숫자(Number)는 유지되고, 가상채널 이름은 변경되는 것이다. 예컨대 6-1 SBS는 6-1 재난방송으로 변경하는 동작이다.The PID change operation is for maintaining the existing virtual channel, so the virtual channel number is maintained and the virtual channel name is changed. For example, 6-1 SBS is an operation to change to 6-1 disaster broadcasting.

상기 Auto CC동작은 DTV로 부터 수신된 정부에 cc에러(Continuity Counter error)를 방지하기 위해 자동으로 패킷(packet)이 만들어질때 카운터를 부여하는 것이다.The Auto CC operation automatically assigns a counter to the packet received from the DTV when a packet is created to prevent a CC error (Continuity Counter error).

상기 널패킷재생성동작은 8VSB 포맷의 datarate를 19.392Mbps로 유지하기 위해 널패킷을 재생성 하는 것으로 기존의 널데이터(Null Data)를 지우고 datarate에 맞게 재생성하는 것이다.The null packet regeneration operation is to regenerate null packets to maintain the data rate of the 8VSB format at 19.392 Mbps, erasing existing null data and regenerating it according to the data rate.

상기 PCR 리스탬핑동작은 널패킷 및 PID 변경에 타이밍(Timing)을 재 조정하는 것으로 PCR이 맞지 않을 때 비디오 및 립싱크가 깨짐을 방지하기 위한 것이다.The PCR restamping operation readjusts timing in response to null packets and PID changes, and is intended to prevent video and lip sync from being broken when the PCR does not match.

또한, 상기 비상방송스트림과정에는 건물 전체에 동일한 오디오가 울려 사람들에게 전달될수 있게 오디오음량 70%를 증폭하는 비상음량증폭동작을 더 포함한다.In addition, the emergency broadcast stream process further includes an emergency sound amplification operation that amplifies 70% of the audio volume so that the same audio can be heard throughout the building and delivered to people.

따라서 본 발명은 공공건물이나 공공장소 등에서 일반인뿐만 아니라 외국인이나 청각장애인에게 TV를 통하여 음향과 함께 고화질 영상으로 비상상황에 대한 정보와 대피정보안내 등을 실시간으로 현장감 있게 전달함으로써, 경각심을 일으키는 동시에 재해 및 재난으로 인한 인명 사고를 최소화할 수 있다.Therefore, the present invention provides real-time information on emergency situations and evacuation information through high-definition images with sound through TV to not only the general public but also foreigners and hearing-impaired people in public buildings or public places, thereby raising awareness of disasters. and casualties caused by disasters can be minimized.

10 : 튜너 20 : 저장부
30 : 외부서버 40 : 변조부
50 : 송출부 60 : 방송절체제어부
70 : 메인제어부
60S : 저장된비상방송절체동작
61S : 방송정보수신과정
62S : 방송신호송출과정
63S : 비상신호수신과정
64S : 비상방송절체과정
65S : 비상방송송출과정10: Tuner 20: Storage unit
30: external server 40: modulation unit
50: Transmission unit 60: Broadcast switching control unit
70: main control unit
60S: Saved emergency broadcast transfer operation
61S: Broadcasting information reception process
62S: Broadcasting signal transmission process
63S: Emergency signal reception process
64S: Emergency broadcast transfer process
65S: Emergency broadcast transmission process

Claims (3)

디지털 비상방송 장치에 있어서,
비상방송 콘텐츠를 저장하고 있는 저장부; 메인방송 신호를 수신하여 처리하기 위한 튜너; 평상시 일반적인 방송을 송출하다가 비상 상황 발생에 따라 외부의 비상 전파 시스템으로부터 비상방송 신호를 수신하면, 상기 저장부를 제어하여 비상방송 콘텐츠를 출력하도록 하고, 메인제어부로부터의 방송 신호를 상기 저장부로부터의 비상방송 콘텐츠로 절체하도록 제어하기 위한 제어 신호를 받아 비상방송 콘텐츠로 절체하는 저장된비상방송절체동작을 하는 방송절체제어부; 및 상기 방송절체제어부로부터의 메인방송신호 또는 비상방송 콘텐츠를 변조하기 위한 변조부 및 송출부를 포함하며,
상기 저장부는 미리 MPEG2 TS의 형태로 제작된 비상방송 콘텐츠를 저장하고 있다가 상기 비상방송 제어부의 제어에 따라 비상방송 콘텐츠를 상기 방송절체제어부로 출력하고,
상기 변조부는 평상시에는 상기 방송절체제어부로부터의 MPEG2 TS 형태의 디지털 지상파 방송 신호를 디지털 지상파 방송 규격인 8VSB신호로 변조하여 RF방송망시스템 측으로 송출하다가, 비상 상황 발생 시에는 상기 방송절체제어부로부터의 MPEG2 TS 형태의 비상방송 콘텐츠를 디지털 지상파 방송 규격인 8VSB 신호로 변조하여, 시청하고 있던 실시간 디지털 지상파 방송과 동일한 RF로 동일한 RF 채널을 통해 비상방송을 MATV방송망 시스템측으로 송출하는 것을 특징으로 하는 비상시 외부저장장치의 영상송출시스템.
In the digital emergency broadcasting device,
A storage unit storing emergency broadcast content; Tuner for receiving and processing main broadcasting signals; When an emergency broadcast signal is received from an external emergency radio system when an emergency situation occurs while normal broadcasting is normally transmitted, the storage unit is controlled to output emergency broadcast content, and the broadcast signal from the main control unit is transmitted to the emergency broadcast signal from the storage unit. a broadcast switching control unit that receives a control signal for controlling switching to broadcast content and performs a stored emergency broadcast switching operation to switch to emergency broadcast content; And a modulation unit and a transmission unit for modulating the main broadcast signal or emergency broadcast content from the broadcast switching control unit,
The storage unit stores emergency broadcast content produced in advance in the form of MPEG2 TS and outputs the emergency broadcast content to the broadcast switching control unit under the control of the emergency broadcast control unit,
In normal times, the modulation unit modulates the digital terrestrial broadcasting signal in the form of MPEG2 TS from the broadcasting switching control unit into an 8VSB signal, which is the digital terrestrial broadcasting standard, and transmits it to the RF broadcasting network system. However, in an emergency situation, the modulation unit modulates the digital terrestrial broadcasting signal in the form of MPEG2 TS from the broadcasting switching control unit to the RF broadcasting network system. An emergency external storage device that modulates emergency broadcast content in the form of an 8VSB signal, which is the digital terrestrial broadcasting standard, and transmits the emergency broadcast to the MATV broadcasting network system through the same RF channel as the real-time digital terrestrial broadcast being watched. 's video transmission system.
 제 1항에 있어서,
상기 비상 전파 시스템은 외부서버를 통해서 화재감지에 따른 화재경보신호 장치나 관리자 동작 의한 선택적 신호장치중 어느 하나를 포함하는 것을 특징으로 하는 비상시 외부저장장치의 영상송출시스템
According to clause 1,
The emergency propagation system is a video transmission system of an external storage device in an emergency, characterized in that it includes either a fire alarm signal device based on fire detection through an external server or a selective signal device operated by an administrator.
 제 1항에 있어서,
상기 비상방송송출과정에서는 비상방송을 스트림하기위해 정보를 업데이트하고 정상적인 영상을 제공하기위한 비상방송스트림과정을 포함하고,
상기 비상방송스트림과정은 가상채널숫자를 유지하고 가상채널이름을 변경하는 PID 변경동작, 자동으로 카운터를 부여하는 Auto CC동작, 기존의 널데이터를지우고 datarate에 맞게 재생성하는 널패킷재생성동작과, 널패킷 및 PID 변경에 타이밍(Timing)을 재 조정하는 PCR리스탬핑동작으로 이루어지는 것을 특징으로 하는 비상시 외부저장장치의 영상송출시스템의 제어방법.According to clause 1,
The emergency broadcast transmission process includes an emergency broadcast stream process to update information to stream the emergency broadcast and provide normal video,
The emergency broadcast stream process includes a PID change operation that maintains the virtual channel number and changes the virtual channel name, an Auto CC operation that automatically assigns a counter, a null packet regeneration operation that erases existing null data and regenerates it according to the data rate, and a null packet regeneration operation that erases existing null data and regenerates it according to the data rate. A method of controlling a video transmission system of an external storage device in an emergency, characterized by a PCR restamping operation that readjusts timing in response to packet and PID changes.
KR1020220045048A 2022-04-12 2022-04-12 Emergency delivery system and its method KR20230146277A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100572056B1 (en) 2003-07-23 2006-04-17 주식회사 제타네트 Disaster Broadcasting System using Cable TV Network

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100572056B1 (en) 2003-07-23 2006-04-17 주식회사 제타네트 Disaster Broadcasting System using Cable TV Network

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