Published  |  2014-06-25 12:16:17

Procuratorate video monitoring system - Electronic Technology Co., Ltd. Guangzhou-season professional surveillance cameras integrated solution integrators.

I. Introduction

The program is fully in line with the Supreme People's Procuratorate crimes committed interrogate suspects audio and video throughout the implementation of the provisions, in line with the "People's Procuratorate questioning the whole synchronized audio and video recording system construction Technical Specification (Trial)" regulations. Both fixed and dedicated optional.

Second, the Unitech invasive monitoring system overview

Unitech invasive monitoring in accordance with the Supreme People's Prosecutor about the suspects in the interrogation process, the visual evidence of fixed verbal evidence, direct recording disc encryption to prevent interception of human evidence on the audiovisual and editing, remote network command, interactive audio and text, requested transcripts proofreading, authentic video signature, temperature and humidity video overlay technology and regulations, the system's software and hardware designed and manufacturing, in line with the actual process of handling cases and prosecutors handling procedures. UOB birth video systems completely change the current prosecution of police interrogation room construction area digitization process, only choose the traditional civil security monitoring, PC plus software patchwork of programs and functions embarrassment. Avoid duplication and waste of funds. With the continuation of the "Kejiqiangjian" prosecutors "213" project and other work, UOB video system will gradually become digitized interrogation room prosecutors construction process is an important component. Prosecutors in order to achieve standardization of digital interrogation room requirements, the use of the existing network and ask for interrogation process to effectively supervise management and visual evidence of fixed and implement Kejijiangjian guiding ideology, improve surveillance investigators, an investigation of the efficiency of handling enhance handling, authenticity and reliability of the forensic process.

Third, the demand and requirements analysis and system configuration

Synchronized throughout the analog and digital audio and video can be mixed or all-digital audio and video monitoring system structure. System equipment generally consists of front-end, transmission, control, records show four parts.

1 front section includes: a color camera and accompanying lenses, PTZ and other auxiliary equipment or spherical camera integration.

2 transmission section includes: video coaxial cable, shielded audio cables, control cables or fiber optic communications, cable and fiber optic transmission equipment, radio transmission equipment and networks based on digital transmission equipment.

(3) control section includes: audio, video switcher, PTZ camera controller, keyboard, mixer, various control communication interface, power and ancillary consoles and other hardware equipment and software to achieve the above functions.

4 records show equipment including digital hard disk video equipment, CD burning equipment, such as monitors and displays.

Control part of the requirements

1 control equipment should be placed in a separate room, to facilitate the operation, security.

2 cameras, surveillance camera, PTZ and other operations should be able to remote control. Network conditions, the system should also implement authorization, remote operation control recording, playback, backup.

3 system can be programmed to automatically or manually switch the switch, all of the video input signal is fixed on the monitor or the specified display timing.

4 should be synchronized with the time code display image.

5 and control system should have the front end visual (sound) frequency communication and command functions.

6 The system should have the text transfer function can be achieved control of the front end with the use of text messages to communicate via the tablet.

7 during the operation of the system should be able to front-end audio, video monitor, and audio signals for each noise filter, amplification processing, each video signal luminance, chroma, contrast, independent control parameters. When the audio and video signal loss, should be timely alarm, and can give the alarm signal is lost.

8 The system should have the memory when the power fails, can be preserved for all programming settings, camera number, time, address and other information.

9 The system can be achieved through a LAN network or prosecutors dedicated real-time audio and video data transmission, the transmission with text, visual (sound) frequency AC and other functions.

10 According to two or two more, and set the appropriate level of authority to operate the password, the user can access to audio and video data through the LAN and prosecutors dedicated network.

11 other features to configure the system should meet the requirements and redundancy requirements.

Records show that part of the requirements

1, the system should be able to clearly show the cameras captured images.

2, raw data should be stored in the file system can not be changed with the encryption of the whole; document output to disc should play automatically integrated software that enables audio and video data playback versatility and maneuverability; same time, the system should have to convert encrypted data format *. WMV, *. AVI, *. ASF, *. MPEG, *. MOV, *. RM and other common storage format features to achieve the sound editing when necessary requirements.

3, the system stored procedure should have the focus marking function.

4, the disc is automatically integrated player software can be implemented on any computer data automatic playback, and should have a continuous fast forward and rewind functions to retrieve playback at any point in time, the focus marker search functions and schedule display.

5, in all states of video and audio channels are recorded, one-way monitoring, playback image screen information should be obvious defect, an object moving images should not have obvious jagged edges, brushed and so on.

6, the sound playback requirements should be synchronized with the video signal in real time, video and audio recording and playback at any time period, there should be no apparent synchronization. To reflect the acoustic sound playback, sound is not distorted.

Fourth, the system overview and structure

XXXX Procuratorate existing between certain interrogation room, interrogation transcripts for work. With the continuation of the "Kejiqiangjian" prosecutors "213" project and other work, and digital audio-visual evidence questioning the fixed command system will gradually become digitized interrogation room prosecutors construction process is an important component. Prosecutors in order to achieve standardization of digital interrogation room requirements, the use of the existing network and ask for interrogation process to effectively supervise management and visual evidence of fixed and implement Kejijiangjian guiding ideology, improve surveillance investigators, an investigation of the efficiency of handling enhance handling, authenticity and reliability of the forensic process.

The entire system can be divided into two parts: the front-end system and a terminal management system. Front-end systems, each interrogation room to configure a fixed or portable trial and a dedicated DVR client computers.

Front-end system features

Double-disc CD hard disk backup or real-time synchronization, respectively, backup, remote network backup function

In the interrogation process in order to prevent the loss of key words evidence of fixed or system failure interrupts the system has visual evidence of a single case of double-disc CD or sync encrypted backup and synchronization backup hard drive, respectively, along with network backup functionality directly through the network The interrogation process synchronization backup in interrogation transcripts computer room, after the interrogation packaged together with interrogation transcripts uploaded to the server, to meet prosecutors on audiovisual preservation of evidence, transcripts of proofreading needs and case management. Accelerate forensics speed, improve work efficiency.

Interrogation time, date, temperature, humidity video overlay function

According to the technical requirements of the Supreme People's interrogation video, using video overlay, sensor technology, the interrogation time, date, interrogation chamber temperature, humidity synchronized superimposed on the visual evidence of the screen. Avoid the use of existing cameras interrogation room time, temperature, humidity digital table behind the methods and data display unclear phenomenon.


Audiovisual evidence or information to identify the focus of a paragraph of text RBI feature video

Using real-time video text tagging technology, interrogation, interrogation or trial process synchronized audio and video recording of fixed visual evidence, as required by touch or remote network commands or queries at any time audiovisual emphasis paragraphs, video text logo RBI, such as "prosecutor focused Paragraph "" Judge doubt Paragraph "," clerk proofreading paragraph "and so on. Find afterwards convenience of key paragraphs, proofreading and organizing notes, improve work efficiency.

Audiovisual evidence or information titles produced video overlay function

Dynamic text using video overlay technology, software and equipment to produce audio-visual evidence or information video titles, including; case number, location, company name, cause of action, the name, date, time and temperature and humidity, and other related content, and sync superimposed visual evidence or audio-visual materials on the screen.

Universal Video file generation

Through the client program can also be completed needs: raw data stored in the file system should not be changed throughout the encryption have sex; document output to disc should play automatically integrated software that enables audio and video data playback versatility and maneuverability; while the system should have to convert encrypted data format *. WMV, *. AVI, *. ASF, *. MPEG, *. MOV, *. RM and other common storage format features to achieve the sound editing when necessary requirements.

CD playback software features integrated auto-

After synchronization is complete DVR video recorders, has completed the integration completed autoplay CD software, the data can automatically be played back on any computer, and should have a continuous fast forward and rewind functions to retrieve playback at any point in time, the focus marker search functions and timeline display.

Video channel parameter adjustment function

Interrogation room digital video contrast, brightness, color and other parameters for any adjustments to the system to provide high-quality audio-visual evidence of a fixed screen output.

Terminal Management System Features

Webcast, audio-visual collaboration interrogation interrogation function

Using advanced MPEG-4 audio and video compression in real time network transmission technology, the Attorney General and the relevant inspection authority officer using a browser, on a number of high-definition network interrogation scene to watch. Can choose one or the questioning of the four audiovisual digital interrogation room, built-grouped by PIP video switching mode according to need, select one of the digital examination room any shooting screen (including text questioning prosecutors and remote command personnel interactive information) for real-time remote viewing and audio-visual evidence to back up the computer's hard drive. Meanwhile digital interrogation room scene prosecutor may use license for several other accomplices interrogation scene to watch in real time, and with the other interrogation room prosecutors exchange text messages, to facilitate collaborative trial found questionable information to improve handling efficiency .

 

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