JP2011139333A - System for controlling disaster prevention information display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for controlling disaster prevention information display for reducing a delay time by content generation by directly displaying disaster prevention information requiring urgency without utilizing a content generation function on a video screen by terrestrial digital broadcast. <P>SOLUTION: This system for controlling disaster prevention information display includes: a disaster prevention information character conversion part for converting disaster prevention monitoring data from a video imaging part to character data; a video character synthesization part for combining image data from a disaster prevention monitoring part with the character data to be output; a content generation part for generating a disaster prevention information content from the disaster prevention monitoring data to be output; and a broadcast organization part for encoding the video data with the character data combined therewith to be output, and multiplexing the disaster prevention information content on the video data from the video imaging part to be output. The broadcast organization part encodes the video data combined with the character data to be output in an emergency. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a disaster prevention information display control system that shortens a delay in display time of disaster prevention information and the like in a digital hearing system.

  In recent years, since terrestrial television broadcasting has been digitized and analog broadcasting has ended on July 24, 2011, user terminals (television receivers) compatible with terrestrial digital broadcasting have become widespread.

  Since terrestrial digital broadcasting is compatible with data broadcasting and IP (Internet Protocol), it is possible to distribute content information described in BML (Broadcast Markup Language) together with video to a digital TV as a user terminal.

  Disaster prevention information content such as video and water level of surveillance cameras installed in rivers, etc., as a technology for notifying disaster prevention information to digital TV, applying a function that can simultaneously distribute video and content information to a disaster prevention information control system. Has been developed (for example, see Patent Document 1).

JP 2008-227940 A

  However, with the technique disclosed in Patent Document 1, it may take time to generate content because the digital hearing system employs a carousel transmission system that keeps sending the same content at a constant period. It was.

  The present invention has been made in view of the above circumstances. For emergency disaster prevention information, the delay time due to content generation can be displayed directly on a video screen by digital terrestrial broadcasting without using the content generation function. It aims at providing the disaster prevention information display control system which shortens.

In order to achieve the above object, the disaster prevention information display control system of the present invention,
A video shooting unit that shoots a subject to be shot with a surveillance camera and outputs video data;
A disaster prevention monitoring unit that monitors monitored objects by monitoring sensors and outputs disaster prevention monitoring data;
A disaster prevention information character conversion unit for converting the disaster prevention monitoring data into character data;
A video character synthesis unit that synthesizes and outputs the character data to the video data in an emergency;
A content generation unit that creates and outputs disaster prevention information content from the disaster prevention monitoring data;
A broadcast organization unit that encodes and outputs the video data combined with the character data, and multiplexes and outputs the disaster prevention information content to the video data from the video imaging unit;
With
The broadcast organization unit may encode and output the video data combined with the character data in an emergency.

  According to the present invention, disaster prevention information can be sent to a user terminal without delay.

The figure which shows the structure of the disaster prevention information display control system which concerns on embodiment of this invention. The flowchart which shows operation | movement of the disaster prevention information display control system which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a disaster prevention information display control system according to an embodiment of the present invention.

  As shown in FIG. 1, the disaster prevention information display control system includes a video photographing device 10, a character synthesis device 20, a broadcast organization device 30, a disaster prevention monitoring device 40, a content generation device 50, and a data broadcast transmission device 60. And a broadcast frequency conversion device 70 and a digital TV 80. In FIG. 1, only one video photographing device 10, disaster prevention monitoring device 40, and digital TV 80 are shown, but actually, a plurality of video photographing devices 10, disaster prevention monitoring devices 40, and digital TVs 80 are installed.

  For example, in the case of a disaster prevention monitoring system for monitoring a river, a large number of video imaging devices 10 are installed at locations suitable for monitoring the water level of the river. The disaster prevention monitoring device 40 may be installed corresponding to the video imaging device 10 or may be installed corresponding to a plurality of video imaging devices 10. The digital TV 80 is a digital TV of each household living in the vicinity of a river.

  In addition, the character synthesizer 20 and the broadcast organization device 30 may be configured by one device, or the character synthesizer 20, the content generation device 50, and the data broadcast transmission device 60 may be configured by one device. .

  Although not shown, these components shown in FIG. 1 are connected to a communication network. The communication network is composed of lines that can communicate with each other. For example, it refers to a network such as a LAN or an intranet, and other communication networks may be used.

  The video imaging device 10 has, for example, an analog or digital video imaging camera, and transmits video data to the character synthesizer 20 via a network.

  The character synthesizing device 20 synthesizes the video data captured by the video imaging device 10 and the text (character data) including the control command sent from the character information control unit 53 of the content generation device 50.

  As a composition method in the character composition device 20, for example, a part of the image data (pixel data) is deleted from the image data of one screen, and the character data from the character information control unit 53 is placed on the deleted pixels. To display. In this way, character data can be synthesized on the captured video data.

  As another method, the video data and the character data are arranged on the same pixel without deleting the video data on the screen, but by adjusting the transparency of the video data and the character data, It is also possible to synthesize character data. For example, synthesized video data is created by setting the transparency of video data to 50% and the transparency of character data to 50%. In addition to these methods, a synthesis technique for synthesizing characters with video in normal analog broadcasting and digital broadcasting can be substituted.

  As shown in FIG. 1, the broadcast organization apparatus 30 includes an MPEG2 encoding unit 31 and a multiplexing unit 32.

  The MPEG2 encoding unit 31 encodes video data, character data, and the like sent from the character synthesizer 20 for each channel. That is, conversion from an (NTSC) analog signal or MPEG2PS to a digital format such as MPEG2TS is performed.

  The multiplexing unit 32 supplies the MPEG2TS (Transport Stream) video stream, which is a terrestrial digital video format supplied from the MPEG2 encoding unit 31, and the MPEG2TS sent from the content generation device 50 via the data broadcast transmission device. The converted BML content information and re-multiplexing (including multiplexing according to frequency division or time division) are also performed. Such multi-synthesis is performed to generate a video stream, which is transmitted to the broadcast frequency converter 70 using one channel.

  The disaster prevention monitoring device 40 is a disaster prevention monitoring facility such as river information, and collects and manages disaster prevention monitoring information such as measurement data and creates disaster prevention monitoring data using a disaster prevention monitoring sensor such as a water meter sensor. The disaster prevention monitoring device 40 has a configuration having a disaster prevention monitoring sensor.

  The disaster prevention monitoring device 40 creates disaster prevention monitoring data based on the monitoring status and weather information by the disaster prevention monitoring sensor, converts the disaster prevention monitoring data into an electrical signal for transmission, and then the characters of the content generation device 50 via the network. It transmits to the information processing part 51. For example, when monitoring the water level of a river, the disaster prevention monitoring device 40 monitors the water level at each monitoring position in order to prevent damage caused by heavy rain by observing with a large number of disaster prevention monitoring sensors installed in the upstream, downstream, and tributaries of the river. Notify disaster prevention monitoring data (observation information).

  The content generation device 50 includes a character information processing unit 51, a character information management unit 52, a character information control unit 53, and a content generation unit 54.

  The character information processing unit 51 decodes the disaster prevention monitoring data sent from the disaster prevention monitoring device 40 and sends it to the character information management unit 52 and the content generation unit 54.

  The character information management unit 52 selects disaster prevention monitoring data to be combined with the video data of the video shooting device 10.

  The character information management unit 52 converts the disaster prevention monitoring data (observation information) to be selected into character data. Character data is information that informs nearby residents of river monitoring information in text (voice output can be used in combination). For example, when the monitoring water level of a river A is 55 cm, the disaster prevention monitoring data “55 cm” is transmitted to the character information management unit 52. Here, when the warning water level of river A determined to be dangerous is 50 cm, the character information management unit 52 outputs character data such as “Please note that the water level of river A has exceeded 50 cm”. . In particular, when the dangerous water level is exceeded, disaster prevention notification data for alerting the residents in the surrounding area to the risk of river breakage or disaster prevention notification data for recommending evacuation is notified.

  Thereafter, the character information management unit 52 sends the created character data to the character information control unit 53. At this time, the character information management unit 52 also manages the transmission time of character data to be transmitted to the character information control unit 53.

  That is, when the disaster prevention information content generated by the content generation unit 54 is already displayed on the digital TV 80, the character information management unit 52 does not send the created character data to the character information control unit 53. For example, when it is assumed that the content generation time or the delay time of the carousel transmission method is one minute or less, the disaster prevention notification is performed one minute after sending the disaster prevention notification data from the character information management unit 52 to the character information control unit 53. Set to stop sending data. In this way, the synthesis time of character data to video data is adjusted.

  The character information control unit 53 transmits the character data and the control command sent from the character information management unit 52 to the character synthesizer 20. The control command is a command that is preset in the character synthesizer 20 and controls, for example, at which position in the video data the character data is displayed.

  The content generation unit 54 generates disaster prevention information contents in various locations in the multiplexing device 32 while corresponding to the MPEG2 encoding unit 31 of the broadcast organization device 30, and multiplexes via the data broadcast transmission device 60. The content information is sent to the device 32. The disaster prevention information content is content created from disaster prevention monitoring data sent from the character information processing unit 51. Content information can provide more detailed disaster prevention monitoring data than character data by displaying information from each disaster prevention and disaster prevention monitoring device 40.

  The data broadcast transmission device 60 transmits the disaster prevention information content in BML format transmitted from the content generation unit 54 as MPEG2TS and transmits it to the multiplexing device 32 of the broadcast organization device 30.

  Therefore, in the disaster prevention information display control system of the present embodiment, the content content generated by the content generation unit 54 is combined by the multiplexing unit 32 of the broadcast organization device 30 and output, and the character information control unit 53 outputs the route. Two routes for synthesizing and outputting the character data and the captured image data by the image character synthesizer 20 are prepared. In the case of information with a high degree of urgency, a route is used in which the character data output from the character information control unit 53 and the image data are combined by the image character synthesizer 20 and output. Then, after a predetermined time has elapsed, the content generated by the content generation unit 54 is synthesized by the multiplexing unit 32 of the broadcast organization device 30 and output.

  In this way, it is possible to provide disaster prevention information with a high degree of urgency to the digital TV 80 without going through a process of composing content contents that are likely to be delayed in time into a video stream.

  The broadcast frequency conversion device 70 converts the video stream multiplexed by the multiplexing device 32 of the broadcast organization device 30 into a broadcast frequency suitable for the frequency band of a coaxial cable functioning as a television reception antenna and distributes it to the digital TV 80. To do. In other words, the time-division multiplexed TS packet is converted into a digital broadcast standard OFDM (orthogonal division multiplexing) signal, frequency-converted to a predetermined band, and transmitted as one wave of digital broadcast. Thereby, the disaster prevention information content is synthesized and displayed on the video displayed on the plurality of display units of the digital TV 80.

  Next, operation | movement of the disaster prevention information display control system of this embodiment is demonstrated with reference to FIG.

  First, disaster prevention information is read from the disaster prevention monitoring device 40. The read disaster prevention information is converted into a data format for transmission (disaster prevention monitoring data) and sent to the character information processing unit 51 of the content generation device 50 (step 301).

  The character information processing unit 51 that has received the disaster prevention monitoring data performs decoding processing so that information processing is possible. The decoded disaster prevention monitoring data is sent to the character information management unit 52 and the content generation unit 54.

  The character information management unit 52 selects the disaster prevention monitoring data to be combined with the video data of the video imaging device 10 when it is necessary to notify an alarm such as when the transmitted disaster prevention monitoring data exceeds the warning water level. I do. Then, the selected disaster prevention information data is converted into character data and sent to the character information control unit 53.

  If there is no information that needs to be notified, the disaster prevention monitoring device 40 continues to observe (step 302).

  The character information control unit 53 transmits the character data and the control command received from the character information management unit 52 to the character synthesizer 20.

  The character synthesizer 20 synthesizes character data at the position in the video data designated by the control command with the video data sent from the video photographing device 10. The combining position of the character data in the image is adjusted by the control command, and the character data is combined with a part of the upper and lower parts of the digital TV screen and a part of the left and right parts. In this way, a video stream including video information and audio information with a high degree of urgency and the character data to be broadcast are synthesized and output.

  After that, the video in which the character data is combined with the video data is multiplexed by the broadcast organization device 30 and displayed on the digital TV in each home via the broadcast frequency conversion device 70, and the viewer views it (step 303). ).

  When there is information that needs to be notified of the alarm, the character information management unit 52 of the content generation device 50 limits the transmission time of the character data to be transmitted to the character information control unit 53. That is, when content information is generated by the content generation unit 54 and the content information can be sent to the viewer without delay, the character information management unit 52 transmits the created character data to the character information control unit. Do not send to 53.

  For example, if the content generation time in the content generation unit 54 or the longest delay time caused by the carousel transmission method is set to 1 minute or less (for example, 50 seconds), the character information management 52 to the character information control unit 53 The disaster prevention monitoring data to be sent to is stopped from being sent to the character information control unit 53 after 50 seconds have passed since the first disaster prevention monitoring data was sent. In other words, for 50 seconds, a route for combining the character data output from the character information control unit 53 and the image data by the image character synthesizer 20 and using it is used. In this way, the synthesis time of character data to video data is adjusted.

  As a setting method of the longest delay time, it is preferable that the setting time can be changed from the external interface (step 304).

  Thereafter, returning to step 301, the disaster prevention monitoring system continues the above series of monitoring operations.

  In this way, emergency information is displayed on the video screen by digital terrestrial broadcasting using emergency routes that do not use the content generation function, so that warning information can be sent to the viewer in a shorter time than information transmission by content generation. Can be provided.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 10 ... Video imaging device 20 ... Character composition device 30 ... Broadcast organization device 31 ... MPEG2 encoding unit 32 ... Multiplexing unit 40 ... Disaster prevention monitoring device 50 ... Content generation device 51 ... Character information processing unit 52 ... Character information management unit 53 ... Character information control unit 54 ... content generation unit 60 ... data broadcast transmission device 70 ... broadcast frequency conversion device 80 ... digital TV

Claims (2)

A video shooting unit that shoots a subject to be shot with a surveillance camera and outputs video data;
A disaster prevention monitoring unit that monitors monitored objects by monitoring sensors and outputs disaster prevention monitoring data;
A disaster prevention information character conversion unit for converting the disaster prevention monitoring data into character data;
A video character synthesis unit that synthesizes and outputs the character data to the video data in an emergency;
A content generation unit that creates and outputs disaster prevention information content from the disaster prevention monitoring data;
A broadcast organization unit that encodes and outputs the video data combined with the character data, and multiplexes and outputs the disaster prevention information content to the video data from the video imaging unit;
With
The broadcast organization unit encodes and outputs the video data synthesized with the character data in an emergency, and outputs the disaster information display control system. A video display unit for displaying the synthesized image data multiplexed by the broadcast organization device transmitted from the broadcast organization device using a terrestrial digital broadcast frequency band;
The disaster prevention information display control system according to claim 1, further comprising:

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