KR100466088B1 - Digital motion picture recording device and method for the preservation of evidence - Google Patents

Abstract

PURPOSE: A device for recording a digital moving image for preserving evidence and a recording method are provided to photograph an interrogation process as moving images, and to attach a tag which records information on an interrogator and an interrogated person, thereby easily retrieving the content of the interrogation process when using the tag as evidence data. CONSTITUTION: A fingerprint input unit(108) extracts fingerprints of an interrogator and an interrogated person. An A/D converter(106) combines an image signal with a voice signal, and converts the combined signals into digital moving image data. A user information DB(116) stores user information on the interrogator and the interrogated person. A tag generator(118) generates a tag which can retrieve the digital moving image data by calling the user information, and attaches the tag to the digital moving image data. A compressor(120) compresses the digital moving image data attached with the tag. When the fingerprints are inputted, a camera(102) and a microphone(104) start operating.

Description

Digital video recording device and recording method for evidence preservation {DIGITAL MOTION PICTURE RECORDING DEVICE AND METHOD FOR THE PRESERVATION OF EVIDENCE}

The present invention relates to a digital video recording device for recording evidence and a recording method, and more specifically, to take a video of the interrogation process for the examinee as a video, and to attach a tag recording the interrogator and the examinee's information for further interrogation or trial. The present invention relates to a digital video recording device and a recording method for preservation of evidence that can be easily searched when interrogated.

When interrogating a suspect or a related party in a police or prosecution service, it was used as important evidence in future trials by only writing a written record and signing a written document on the suspect. The interrogator (the suspect, etc.) answers the question of the interrogator (police officer, prosecutor, etc.), the interrogator records the question and the answer in a document, and then the interrogator and the interrogator sign the signature or seal and sooth the document. Establishment and authenticity of contents

However, in the interrogation process, threats and violence are used, or deception behaviors about the examinee have occurred, and in order to prevent the problem, a method of recording and storing the interrogation process for the examinee by video and audio is used.

As a method of recording and storing a video, a general camera, a CCTV, a video recorder, and the like may be used, but recently, a digital video recorder capable of converting and storing a video into a digital signal has been rapidly spreading. If you use the DVR, you can save only moving images, and you can search for saved videos quickly and conveniently by time or location.

However, places where interrogators are interrogated by prosecutors, etc., are used by many people, and it is difficult to retrieve interrogation videos for a specific event from a large amount of stored data unless a separate storage device is provided for each interrogator or interrogator. There was a downside.

In addition, the video of the interrogation process can be used as important evidence in future trials, and the information on the interrogator and the interrogator and the contents of the video should not be altered or deleted, so a security device is urgently needed.

The present invention has been made in order to solve the above-described problems, to generate a digital video data by recording the interrogation process of the interrogator and the aspirant, and to write the tag recording the personal information of the interrogator and the aspirant in the generated digital video data It is an object of the present invention to provide a digital video recording device and recording method for evidence storage, which can be easily searched for a video containing an investigation process for a specific case.

In another aspect, the present invention provides a digital video recording device and a recording method for evidence preservation that can prevent the forgery and prevent forgery of the video containing the interception process by inserting a watermark generated from the fingerprint of the interrogator and the interrogator in the digital video data It aims to provide.

In another aspect, the present invention provides a digital video recording apparatus and recording method for evidence storage that can facilitate the storage and transmission of data by compressing and storing video digital data containing the processing process in any one of MPEG1, MPEG2, MPEG4 format. It aims to do it.

1 is a structural diagram showing a configuration of a moving picture recording apparatus according to an embodiment of the present invention;

Figure 2 is a flow chart showing the flow of a moving picture recording method according to an embodiment of the present invention.

According to an aspect of the present invention, there is provided an apparatus for capturing a video interrogation process using a camera and a microphone by using a camera and a microphone, the apparatus comprising: a fingerprint input unit for capturing a fingerprint of a character and a character; An A / D conversion unit for combining the video signal and the audio signal input from the camera and the microphone to convert the digital video data; A user information DB for storing user information on the interrogator and the interrogator; A tag generation unit for generating a tag for searching the digital video data by calling the user information and attaching the tag to the digital video data; And a compression unit for compressing the digital video data to which the tag is attached. When a fingerprint for a character and a character is input from the fingerprint input device, the camera and the microphone start to operate.

A watermark generation module for forming a unique pattern for the core character and the subject character from the fingerprint inputted from the fingerprint input unit, and generating a watermark from the unique pattern; A watermark DB for storing information about the watermark; A watermark embedding unit for embedding the watermark in the digital video data; And a video information DB for storing the digital video data compressed by the compression unit.

The user information may be any one or two or more of the personal information of the interrogator and the examinee, the date of the interview, the location of the interview, the case number.

The compression unit may compress the digital video data into one of MPEG1, MPEG2, and MPEG4 formats.

According to another aspect of the present invention, there is provided a video recording process for a subject by using a camera and a microphone, wherein when the user information on the character and the character is input, storing the user information; ; Initiating operations of the camera and the microphone when a fingerprint for a character and a character to be input is input through a fingerprint input device; Combining video signals and audio signals respectively inputted from the camera and the microphone and converting them into digital video data; Generating a tag for searching the digital video data by calling the user information, and attaching the tag to the digital video data; And compressing and storing the tagged digital video data.

Forming a unique pattern for the interrogator and the examinee from the fingerprint, and generating a watermark from the unique pattern; Storing information about the watermark; And embedding the watermark in the digital video data.

The user information may be any one or two or more of the personal information of the interrogator and the examinee, the date of the interview, the location of the interview, the case number.

The compressed digital video data has any one of MPEG1, MPEG2, and MPEG4 format.

A description with reference to the drawings is as follows.

1 is a structural diagram showing the configuration of a moving picture recording apparatus (hereinafter referred to as a "recording apparatus") according to an embodiment of the present invention, which will be described with reference to FIG.

The recording apparatus 100 includes a camera 102, a microphone 104, an A / D converter 106, a fingerprint inputter 108, a watermark generation module 110, a watermark DB 112, and a watermark insertion unit. 114, a user information DB 116, a tag generation unit 118, a compression unit 120, and an image information DB 122.

The camera 102 and the microphone 104 convert the video and audio of the interrogator and the aspirator into analog video and audio signals, respectively.

The A / D converter 106 combines the video signal and the audio signal input from the camera 102 and the microphone 104 and converts them into digital video data.

The fingerprint inputter 108 collects fingerprints of the interrogator and the aspirator, and includes an image sensor such as a CCD for recognizing a fingerprint pattern. In order to recognize a fingerprint, the fingerprint input unit 108 includes a light emitting device, an optical sensor, a signal converter, and other components. The fingerprint input unit 108 detects light reflected differently according to the valley of the fingerprint to determine the shape of the fingerprint.

The watermark generation module 110 generates a detection key by forming a unique pattern from the fingerprint of the interrogator and the aspirant, and generates a watermark from the unique pattern. Watermark refers to inserting information that can be identified only by the author into various digital works such as images, audio, and video, and has been widely used to make it possible to determine when a work is deleted, copied, or tampered with. to be. The watermark may be generated based on the handwritten signature, seal, image, etc. of the author, and in the present invention, the watermark is generated based on the fingerprint patterns of the interrogator and the interrogator.

The watermark DB 112 stores information about the generated watermark.

The watermark inserting unit 114 inserts the generated watermark into the digital video data. There are two methods of embedding a watermark into a frequency domain and a spatial domain. The method of embedding the watermark in the space area has the advantage of being fast but has the disadvantage of being weak in compression. On the other hand, the method of inserting a watermark in the frequency domain has the advantage of inserting a watermark robustly to compression, but it is not suitable when many video frames need to be transmitted in real time because the embedding algorithm requires a lot of time. not.

In the present invention, since a case of transmitting a video in real time and a case of transmitting a stored video may occur, an insertion method most suitable for each case may be selectively used.

The user information DB 116 stores user information on the interrogator and the interrogator. The user information preferably includes information for identifying the interrogator and the interrogator and identifying the interrogation process such as the date of investigation, the location of the interview, the case number, and the like, including the affiliation, the subject, and the name of the interrogator. By using such information, it is possible to easily search for a process of inquiring about a specific event among data stored in the recording apparatus 100 used by a plurality of users.

The tag generator 118 attaches the user information tag of the character and the character to the video data stored in the recording apparatus 100.

The compression unit 120 compresses tagged video data, and the video data compressed by the compression unit 120 has any one of MPEG1, MPEG2, and MPEG4 format. Preferably it has an MPEG4 format with a high compression rate and easy transmission.

The image information DB 122 stores digital video data tagged with a watermark and inserted therein, and searches for and transmits corresponding data when a transmission request for the video data is requested.

Among the components included in the recording apparatus 100, a method used for recording and transmitting a moving picture, converting data, etc. uses conventional techniques known in the art, and thus a detailed description thereof will be omitted.

2 is a flowchart showing the flow of a video recording method according to an embodiment of the present invention, which will be described with reference to FIG.

First, user information of a character and a character to be input to the recording apparatus 100 through an input unit (not shown) including a keyboard, a touch pad, a mouse, and the like, is stored in the user information DB 116. (S102) ) The user information for the interrogator may input information by contacting the card reader with a magnetic card or a smart card into which the information is input.

When the interrogator and the interrogator input their fingerprints to the fingerprint inputter 108, the interrogator recognizes the fingerprint and converts the pattern of the fingerprint into a digital signal.

When the fingerprints of the interrogator and the aspirant are recognized, the operation of the camera 102 and the microphone 104 is started and video recording of the interrogation process is started. (S106) The captured video signal and audio signal are converted into digital video data. Temporarily stored.

The watermark generation module 110 generates a detection key by generating a unique pattern from a fingerprint of the input character and the character, and generates a watermark from the unique patterns of the character and the character. (S108, 110)

On the other hand, the tag generation unit 118 calls the user information of the character and the subject to be stored in the user information DB 116, and generates a tag in which the called user information is recorded and attached to the temporarily stored digital video data. (S112)

The watermark inserting unit 114 inserts the watermark generated from the fingerprint of the character and the subject into the digital video data containing the interrogation process. (S114) As described above, the method of embedding the watermark may include a frequency domain or It may be a spatial domain, and other insertion methods may be applied if the same effect can be achieved.

The compression unit 120 compresses the digital video data tagged with the watermark and inserted therein into an appropriate format and stores it in the image information DB 122.

In order to reproduce the video of the interrogation process stored in the image information DB 122, the fingerprint of both the character and the character to be input must be input. If only one of the fingerprints of the interrogator or the interrogator can be reproduced, forgery by one party may be possible. Alternatively, if the video can be played only by fingerprint input of one party, but the deletion or tampering is impossible, it is not necessary to restrict both parties to input the fingerprint together.

After receiving the compressed video data, the video data is decompressed and converted into a format that can be played back. In addition, since watermarks embedded in the video data can be detected to read information on the interrogator and the interrogator, it is possible to conveniently search for a video including a process of investigating a specific event.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and the rights of the person skilled in the art can be easily modified.

Although the present invention has been described as recording the investigation process by the police or prosecution, the contents of meetings of various companies or organizations, consultations of customer centers and call centers, civil consultations of government offices, etc. are recorded and stored as video data, and later meetings If you need to replay the consultation, you can use the information about the participants or counselors to search for the content.

According to the present invention, there is an effect that the video data containing the interrogation process can be easily searched by inputting the information of the interrogator or the interrogator.

In addition, according to the present invention, by inserting and storing the watermark extracted from the fingerprint of the question character and the subject character in the video data, there is an effect that can be prevented forgery of the video data.

In addition, according to the present invention, by compressing the video data stored and transmitted, there is an effect that can increase the storage and transmission efficiency of the data.

Claims (8)

In the device for recording the interrogation process for the examinee character using a camera and a microphone, A fingerprint input unit for collecting fingerprints for the interrogator and the interrogator; An A / D conversion unit for combining the video signal and the audio signal input from the camera and the microphone to convert the digital video data; A user information DB for storing user information on the interrogator and the interrogator; A tag generation unit for generating a tag for searching the digital video data by calling the user information and attaching the tag to the digital video data; And a compression unit compressing the tagged digital video data. When the fingerprints for the interrogator and the interrogator are input from the fingerprint inputter, the camera and the microphone start to operate. The method of claim 1, A watermark generation module for forming a unique pattern for the core character and the subject character from the fingerprint inputted from the fingerprint input unit, and generating a watermark from the unique pattern; A watermark DB for storing information about the watermark; A watermark embedding unit for embedding the watermark in the digital video data; And a video information DB for storing the digital video data compressed by the compression unit. The method according to claim 1 or 2, The user information Evidence-protected digital video recording device, characterized in that any one or two or more of the personal information of the interrogator and the examinee, the date of collection, the location of the interview, the case number. The method according to claim 1 or 2, The compression unit And the digital video data is compressed into any one of MPEG1, MPEG2, and MPEG4. In the method of taking a video of the interrogation process for the subject by using a camera and a microphone, Storing user information when user information on a question character and a question character is input; Initiating operations of the camera and the microphone when a fingerprint for a character and a character to be input is input through a fingerprint input device; Combining video signals and audio signals respectively inputted from the camera and the microphone and converting them into digital video data; Generating a tag for searching the digital video data by calling the user information, and attaching the tag to the digital video data; And compressing and storing the tagged digital video data. The method of claim 5, Forming a unique pattern for the interrogator and the examinee from the fingerprint, and generating a watermark from the unique pattern; Storing information about the watermark; And embedding the watermark in the digital video data. The method according to claim 5 or 6, The user information Evidence-protected digital video recording method, characterized in that any one or two or more of the personal information of the interrogator and the examinee, the date of collection, the location of the interview, the case number. The method according to claim 5 or 6, The compressed digital video data An evidence preservation digital moving picture recording method characterized by having any one of MPEG1, MPEG2, and MPEG4.