CN101826170A - Fingerprint authentication and digital watermark-based remote digital court trial system - Google Patents
Fingerprint authentication and digital watermark-based remote digital court trial system Download PDFInfo
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Abstract
The invention discloses a fingerprint authentication and digital watermark-based remote digital court trial system, and relates to the technical fields of remote identity authentication, remote video and audio transmission and synchronization, and the like. The traditional court trial needs to be performed when each party of litigious participants is in the trial division provided by the court, and has the disadvantages of high litigation cost and low efficiency. The fingerprint authentication and digital watermark-based remote digital court trial system comprises a court end (11), an end of other litigious participants (13) and a central control end (14) which are mutually connected through a network (12). The identity of each party of the litigious participants is determined through a fingerprint information extraction device (21) and a fingerprint information verification device (141); the condition of each party of the litigious participants is displayed simultaneously through a video and audio acquisition device (22) and a display device (23); and the characteristic data of the fingerprint is used as a watermark to be embedded into the video and audio. Therefore, the fingerprint authentication and digital watermark-based remote digital court trial system fulfills the aim of remote digital court trial, reduces the litigation cost, improves the trial efficiency of cases, and has high safety.
Description
Technical field
The present invention relates to long-distance identity-certifying, long-range audio transmission and the technical field such as synchronous of looking, be specifically related to a kind of remote digital court's trial system, be applicable to that law court carries out in the process of court's trial case based on finger print identifying and digital watermarking.
Background technology
Regulation according to existing law, case mainly classify civil case, administrative case and criminal case.Accordingly, the trial of case just is divided into the trial of civil case, the trial of administrative case and the trial of criminal case.The difference of the difference of case type and case concrete condition can make that the civil litigant participants in the court trial process is different.For example, among the civil case civil litigant participants judge, plaintiff, defendant must be arranged, also have the 3rd people, witness, surveyor etc.; The civil litigant participants of criminal case also must have the public prosecutor.The court's trial program can roughly be summarized as follows several stages: civil litigant participants's identity is carried out the stage of recognition (this stage carries out) before court's trial; The court investigation stage (plaintiff and defendant carry out case statement and proof respectively in this stage, and the evidence that the other side is provided carries out cross-examination, if the witness is arranged, then also needs the attendance of witness to testify); The court debate stage (central issue being had argument) by plaintiff and defendant; The closing statement stage (plaintiff and defendant carry out closing statement respectively).
Along with development of science and technology, law courts at different levels begin tentative with technological means support court's trial work gradually.Constitute from facility, the technicalization court of two kinds of forms mainly occurred.
First kind, the initial stage form mainly is made up of court's trial recording unit, projector for real object and sound system, and each law court is referred to as " multimedia court " traditionally.
Second kind, improvement phase form, be on the basis of " multimedia court ", introduced video conferencing system, supporting the recording, transmit of court's trial live telecast, but various device is separate basically, only has part to realize interlock mutually, as controlling video camera by public address system, each law court's custom is referred to as " intelligent court ".
Make a general survey of the technicalization court of these two kinds of forms, be in the level of manipulating of equipment basically, do not form an organic whole.Though made things convenient for lawsuit to a certain extent, improved litigation efficiency, fundamentally do not change traditional court's trial mode, the process of court's trial still needs civil litigant participants each side to carry out in the adjudication division that law court provides.On the one hand, the lawsuit cost is higher, because law court need provide the adjudication division, other civil litigant participantses need transport cost etc.; On the other hand, also can influence the trial quality of case in some cases, for example the witness is because certain is former thereby can not testify or fear to retaliate and be reluctant to testify etc.In addition, owing to the finiteness of law court's adjudication division's resource and litigant because of reasonable ground reason such as can't present in court, cause the delay of the time limit for handling the case, influenced the trial efficient of case.
Summary of the invention
At the defective that exists in the prior art, the purpose of this invention is to provide a kind of based on finger print identifying and digital watermarking, the lawsuit cost is low, trial efficient height, remote digital court's trial system that security is good.
To achieve these goals, the technical solution used in the present invention is as follows: a kind of remote digital court's trial system based on finger print identifying and digital watermarking comprises by the interconnective law court's end of network (12) (11), other civil litigant participants's end (13) and center control ends (14);
Described law court end (11), other civil litigant participantses' ends (13) are equipped with the finger print information harvester (21) that is used to gather civil litigant participants's finger print information, be used to gather the civil litigant participants respectively looks closely looking audio collecting device (22) and being used to show that the civil litigant participants respectively looks closely the display device of audio frequency (23) of audio frequency; Described law court's end (11) also is provided with the evidence demonstration control device (24) that is used to control the evidence of showing that the lawsuit both sides provide;
Described finger print information harvester (21) comprises the fingerprint image acquisition device (211) that is used for civil litigant participants's fingerprint is taken into image, be used for fingerprint image is carried out pretreated fingerprint image preprocessing device (212), and the fingerprint characteristic extraction apparatus (213) that is used to set up the characteristic of fingerprint;
Describedly look the digital watermarking maker (229) that audio collecting device (22) comprises the characteristic that is used to store the fingerprint that fingerprint characteristic extraction apparatus (213) extracts, and be used for the characteristic of fingerprint as watermark be embedded into look, the digital watermarking of audio frequency embeds device 230;
Described center control end (14) is provided with finger print information demo plant (141), evidence demonstration device (142) and looks voice playing control device (143); Identity information demo plant (141) is used for the identity information of identity information extraction element (21) extraction of each end of civil litigant participants is verified, evidence demonstration device (142) is used for according to the request of evidence demonstration control device (24) transmission of law court's end (11) the digitizing evidence of asking being distributed to each display device (23) of holding of civil litigant participants, looks voice playing control device (143) and is used to control each display device (23) of holding of civil litigant participants.
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, the described audio collecting device (22) of looking comprises that also being used for collection looks, looking of voice data, audio data collecting device (221,225), being used for buffer memory looks, audio data collecting device (221, that 225) gathers looks, looking of voice data, audio data buffer (222,226), be used for looking to buffer memory, the vedio data encoder (223 that voice data is encoded, 227), be used for looking behind the coding, voice data is distributed to looking of each display device (23) of holding of civil litigant participants, voice data distributor (224,228).
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, described display device (23) comprises and is used for buffer memory from looking looking that audio collecting device (22) receives, looking of voice data, audio data buffer (231,232), be used for looking to buffer memory, what voice data was decoded looks, voice data demoder (233,234), be used for extracting and look, the watermark that embeds in the audio frequency, and the watermark that extracts sent to looking that finger print information demo plant (141) in the center control end (14) verifies, audio frequency watermark extraction apparatus (235,236), be used for looking to decoded, audio frequency carries out the synchronous audio sync device (237) of looking, and the display (238) that is used for video/audio after the display synchronization.
Aforesaid a kind of remote digital court's trial system, described display device (23) based on finger print identifying and digital watermarking also comprise be used for to decodedly look, voice data is processed, handle look, audio data processor.
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, described other civil litigant participants's ends (13) also are provided with digital signature device and/or electronic seal device, are used for e-file is carried out sign or seal.
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, described display (238) is divided into a plurality of subregions, and every district is used to show the audio frequency of looking of civil litigant participants's one end.
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, in the display device (24), when a certain viewing area did not have displaying contents, then the civil litigant participants with speech held corresponding viewing area by corresponding amplification; After this civil litigant participants holds speech to finish, narrow down to original size automatically.
Aforesaid a kind of remote digital court's trial system based on finger print identifying and digital watermarking, it is characterized in that: described center control end (14) also is provided with and looks, audio decoder, look, the audio sync device, all civil litigant participantses look closely audio collecting device (22) and the looking of its collection, voice data are being sent to other civil litigant participantses when holding, send to center control end (14) simultaneously, center control end (14) is to looking, after the voice data decoding, synchronous operation, being used for network direct broadcasting.
Adopt system of the present invention, civil litigant participants each side can be in different geographic position in the court trial process, the unified trial court that provides to law court is provided engages in a lawsuit, thereby saved the lawsuit cost of each side.Because court trial process is not subjected to the restriction of region, phenomenon is incured loss through delay in the lawsuit of having avoided causing because of problems such as traffic, has shortened the time limit that law court hears a case, and has improved trial efficient.In addition, be used for the civil litigant participants fingerprint characteristic as watermark be embedded into look, voice data, can guarantee to look, the security of voice data when Network Transmission.
Description of drawings
Fig. 1 is system framework figure of the present invention;
Fig. 2 is the structural representation of law court's end, other civil litigant participants's ends and center control end;
Fig. 3 is the structural representation of fingerprint information collecting device;
Fig. 4 is a structural representation of looking audio collecting device;
Fig. 5 is the structural representation of display device;
Fig. 6 is a display display frame synoptic diagram.
Embodiment
Describe the present invention below in conjunction with embodiment and accompanying drawing.
Core concept of the present invention is: in the court trial process, civil litigant participants each side can be in different places, confirm the identity of each side by finger print information harvester and fingerprint characteristic coalignment, and the fingerprint characteristic that extracts is embedded in the video/audio as watermark, prevent that video/audio from being distorted in network transmission process, show simultaneously by looking the civil litigant participants each side situation that audio collecting device and display device will be in the different location, thereby realize the purpose of remote digital court's trial.
Fig. 1 has shown a kind of structural representation of long-range digitization system.This system comprises that mainly law court end 11, other civil litigant participantses hold 13 and center control end 14, law court's end 11, other civil litigant participantses hold 13 and center control end 14 interconnect by network 12.Described other civil litigant participantses hold 13 to be recapitulative general name, it is not an end that refers to entity, it can be provided with according to concrete case type and case characteristics, comprises that the plaintiff holds, defendant's end, public prosecutor's end, the 3rd people end, witness's end etc., and the main device that each end comprises is identical.Law court's end 11 also comprises evidence display control unit 24 except comprising the main device of holding with other civil litigant participantses, be used for sending digitizing evidence request instructions to center control end 14.Network 12 can be a cable network, also can be wireless network.The major function of center control end 14 comprises to be verified all civil litigant participantses' identity, transfers the display device that the digitizing evidence is distributed to each end according to instruction, and the demonstration of display device is respectively held in control.
Fig. 2 has shown law court's end 11, other civil litigant participantses and has held 13 and the concrete structure of center control end 14, other participants in proceedings hold 13 be specially the plaintiff hold 131 and defendant hold 132.The civil litigant participants of law court's end 11 comprises judge, juror, clerk, and the plaintiff holds 131 civil litigant participants to comprise plaintiff and procurator, and defendant holds 132 civil litigant participants to comprise defendant and procurator.Law court end 131, plaintiff hold 132 and defendant hold and 133 be equipped with the finger print information harvester 21 that is used for gathering civil litigant participants's finger print information, be used to gather the civil litigant participants and respectively look closely audio frequency and looking audio collecting device 22 and being used to show that the civil litigant participants respectively looks closely the display device 23 of audio frequency at the video/audio embed watermark.
Fig. 3 has shown the structure of finger print information harvester 21, comprises fingerprint image acquisition device 211, fingerprint image preprocessing device 212 and fingerprint characteristic extraction apparatus 213.Fingerprint image acquisition device 211 is taken into image with civil litigant participants's fingerprint.212 pairs of fingerprint images of fingerprint image preprocessing device carry out pre-service, make the fingerprint characteristic information that contains in the fingerprint image more obvious.Fingerprint characteristic extraction apparatus 213 is set up the data representation of fingerprint, i.e. characteristic sends to fingerprint characteristic data the digital watermarking maker 229 looked in the audio collecting device 22 and the finger print information demo plant 141 in the center control end 14 then simultaneously.
Fig. 4 has shown the concrete structure of looking audio collecting device 22, comprises that video data acquiring device 221, video data buffer 222, vedio data encoder 223, video data distributor 224, audio data collecting device 225, audio data buffer 226, audio data coding device 227, voice data distributor 228, digital watermarking maker 229 and digital watermarking embed device 230.Video data and voice data adopt independent passage to gather.Video data acquiring device 221 is gathered the video pictures of each end of civil litigant participants, is buffered in the video data buffer 222.When the size of data in buffer reaches preset value, encode by video data stored in 223 pairs of buffers of vedio data encoder.Video data after will encoding at last is distributed to the display device 23 of each end of civil litigant participants.Simultaneously, audio data collecting device 225 is gathered civil litigant participants's voice messaging, equally through being distributed to the display device 23 of each end of civil litigant participants behind buffer memory, the coding.All comprise time point information in video data and the voice data, the reference when looking audio sync.In said process, with the fingerprint characteristic data in the digital watermarking maker 229 as watermark, used digital watermarking embed device 230 be embedded into look, in the audio frequency.Digital watermarking can also can embed in coding stage original looking, embedding in the audio data stream, can also behind coding, embed, Fig. 4 be coding stage during embed watermark digital watermarking embed the distributing position of device 230.
Law court's end 11 also is provided with the evidence demonstration control device 24 that is used to control the evidence of showing that the lawsuit both sides provide.Center control end 14 is provided with finger print information demo plant 141, evidence demonstration device 142 and looks voice playing control device 143.Finger print information demo plant 141 is used for the identity information that the finger print information harvester 21 of each end of civil litigant participants is gathered is verified.Evidence demonstration device 142 is used for according to the request of evidence demonstration control device 24 transmissions of law court's end 11 the digitizing evidence of request being distributed to display device 23 of each end of civil litigant participants.Look voice playing control device 143 and be used to control each display device 23 of holding of civil litigant participants, guarantee respectively to hold display device 23 content displayed unanimities.
Before court's trial begins, at first need all civil litigant participantses are carried out authentication.Civil litigant participants's identity is determined by fingerprint authentication among the present invention.At first fingerprint image acquisition device 121 is gathered lawsuit civil litigant participants's fingerprint, through after the pre-service, and the characteristic that takes the fingerprint.Then the characteristic of fingerprint is sent to the finger print information demo plant 141 of center control end 14 by network 12, send to the digital watermarking maker of looking in the audio collecting device 22 229 simultaneously, use as digital watermarking.After finger print information demo plant 141 receives the characteristic of fingerprint, transfer the characteristic that is stored in this civil litigant participants's fingerprint in the database in advance, compare, will verify that then the result is distributed to the display device 23 of each end of civil litigant participants by network 12.Simultaneously, if also this civil litigant participants's personal information as name, age, home address, work unit, contact method etc., can be sent to each display device 23 of holding of civil litigant participants with the checking result by checking.After each end of civil litigant participants is all received checking result and this civil litigant participants's personal information, look voice playing controller 143 unified display device 23 and send order to each end of civil litigant participants, show checking result and this civil litigant participants's personal information simultaneously.
Judge's (comprising the juror) and clerk also can carry out authentication by the way, with every judge and clerk's individual profile information send to the plaintiff hold 131 and defendant hold 132, so that other participants in proceedings have certain understanding to judge and clerk, as the reference of plaintiff and defendant to judge or clerk's apply for the withdrawal.
Fig. 5 has shown the concrete structure of display device 23, mainly comprise look, audio data buffer 231,232, look, voice data demoder 233,234, look, audio frequency watermark extraction apparatus 235,236, look audio sync device 237 and display 238.Look, audio data buffer 231,232 is used for buffer memory from looking of looking audio collecting device 22 receives, voice data.Look, voice data demoder 233,234 be used for to look, audio frequency decodes.Look, audio frequency watermark extraction apparatus 235,236 be used for extracting look, watermark that audio frequency embeds, then the watermark that extracts is sent to the finger print information demo plant 141 in the center control end 14.Finger print information demo plant 141 is compared with the characteristic of original fingerprint, and the result is fed back to display device 23.Look, audio frequency watermark extraction apparatus 235,236 different phases according to embed watermark are positioned at different positions, if embed watermark in cataloged procedure, then look, audio frequency watermark extraction apparatus 235,236 is arranged on and looks, after the audio decoder 233,234, as shown in Figure 5.Looking audio sync device 237 is used for the decoded audio frequency of looking is carried out synchronously.When looking after audio sync finishes, the voice playing controller 143 of looking in center control end 14 sends notice.After civil litigant participants end is all finished synchronously to the looking of same time period, audio frequency, look voice playing controller 143 and send order to the display device of civil litigant participants's end simultaneously, play simultaneously look, audio frequency.
In display device 23, can also be provided with look, audio data processor, be used for to look, voice data is processed, handle.For example,, then its face mosaic processing can be carried out, protective effect can be played like this witness if the witness does not wish the openly appearance feature of oneself.Also can handle the sharpness of video and audio frequency.
In addition, look audio collecting device 22 and have only when civil litigant participants one rectifies the formula speech, just need to gather simultaneously the video and the audio frequency of the end of making a speech, other ends are then only gathered video information and are got final product, and need not audio frequency acquiring, also need not to look, audio sync.
At each end of civil litigant participants many displays 238 can be set, be used for showing respectively the audio frequency of looking of each end of civil litigant participants; Also a display can be carried out subregion, every district shows the audio frequency of looking of civil litigant participants's one end.As shown in Figure 6, display 238 is divided into law court viewing area 2381, plaintiff viewing area 2382, defendant viewing area 2383, witness viewing area 2384, identity authentication result and identity information viewing area 2385, evidence viewing area 2386.When a certain district did not have displaying contents, as witness viewing area, identity authentication result and identity information viewing area, the size of other viewing areas was by corresponding amplification.A kind of preferred mode is: when a certain civil litigant participants speech, and a certain viewing area is not when having displaying contents, and then corresponding with civil litigant participants viewing area is amplified accordingly; After this civil litigant participants makes a speech end, then narrow down to original size automatically.
In the court investigation stage of court's trial, need plaintiff and defendant's twocouese court to lodge a proof, if the witness is arranged, also need the witness that testimony is provided.In the court's trial that has the witness to participate in, also need to be provided with witness's end, the device of this end is held identical with plaintiff's end, defendant.When the witness testify finish after, witness end just cuts off with system.As the plaintiff or defendant lodges a proof and the practical work that this evidence will prove is carried out narrative tense, the evidence demonstration control device 24 of law court's end 11 sends request to the evidence demonstration device 142 of center control end 14, request demonstration and plaintiff or defendant are stating the corresponding digital evidence, evidence demonstration device 142 inquiry associated databases, from database, find this digitizing evidence and send it to each display device 23 of holding of participant in proceedings, after the display device 24 of each end is all received this digitizing evidence, be simultaneously displayed in the evidence viewing area 2386 of respectively holding display 238.
The digitizing evidence of storing in the database need be made before court's trial according to the evidence that plaintiff and defendant in the proof deadline submit to.For example, material evidence can be taken into picture, and documented evidence, expert's conclusion, records of inquests etc. can be scanned into e-file.
After the witness provides testimony, after perhaps court's trial finishes, need confirm the court's trial notes of civil litigant participants in court trial process of clerk's record.At this moment, need civil litigant participants's end of sign or seal that digital signature device or electronic seal device also should be set.Law court's end sends to civil litigant participants's end with the e-file that writes down in the court trial process, utilizes digital signature device or electronic seal device to carry out sign or seal then on e-file.
In court trial process, the public can audit the case that can try in public, so generally all provides visitors seats in the adjudication division of law court, is convenient to the public using case trial electric process is exercised supervision, but the public does not have the right of speech in court trial process, must not violate court's discipline yet.In the case that can try in public, the center control device 14 of system of the present invention is held a concurrent post the function of network direct broadcasting simultaneously.In center control end 14, also need to be provided with look, audio decoder, look, equipment such as audio sync device, respectively look closely audio collecting device with the looking of its collection, when voice data sends to other ends, send to center control end 14 simultaneously.After the operations such as 14 pairs of center control ends are looked, voice data is decoded, synchronous, be used for network direct broadcasting.Also can be after court's trial finish, all of storage are looked audio file be integrated into one section complete audio file of looking, announce on the internet, be used for that the public is online to watch and download.Like this, law court not only need not provide visitors seats, and has avoided the influence of auditor to the litigious party, and violates the influence of the auditor of court's discipline to the using case trial electric process.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technology thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. remote digital court's trial system based on finger print identifying and digital watermarking is characterized in that: described system comprises by the interconnective law court's end of network (12) (11), other civil litigant participantses' end (13) and center control ends (14);
Described law court end (11), other civil litigant participantses' ends (13) are equipped with the finger print information harvester (21) that is used to gather civil litigant participants's finger print information, be used to gather the civil litigant participants respectively looks closely looking audio collecting device (22) and being used to show that the civil litigant participants respectively looks closely the display device of audio frequency (23) of audio frequency; Described law court's end (11) also is provided with the evidence demonstration control device (24) that is used to control the evidence of showing that the lawsuit both sides provide;
Described finger print information harvester (21) comprises the fingerprint image acquisition device (211) that is used for civil litigant participants's fingerprint is taken into image, be used for fingerprint image is carried out pretreated fingerprint image preprocessing device (212), and the fingerprint characteristic extraction apparatus (213) that is used to set up the characteristic of fingerprint;
Describedly look the digital watermarking maker (229) that audio collecting device (22) comprises the characteristic that is used to store the fingerprint that fingerprint characteristic extraction apparatus (213) extracts, and be used for the characteristic of fingerprint as watermark be embedded into look, the digital watermarking of audio frequency embeds device 230;
Described center control end (14) is provided with finger print information demo plant (141), evidence demonstration device (142) and looks voice playing control device (143); Identity information demo plant (141) is used for the identity information of identity information extraction element (21) extraction of each end of civil litigant participants is verified, evidence demonstration device (142) is used for according to the request of evidence demonstration control device (24) transmission of law court's end (11) the digitizing evidence of asking being distributed to each display device (23) of holding of civil litigant participants, looks voice playing control device (143) and is used to control each display device (23) of holding of civil litigant participants.
2. a kind of remote digital court's trial system as claimed in claim 1 based on finger print identifying and digital watermarking, it is characterized in that: the described audio collecting device (22) of looking comprises that also being used for collection looks, looking of voice data, audio data collecting device (221,225), being used for buffer memory looks, audio data collecting device (221, that 225) gathers looks, looking of voice data, audio data buffer (222,226), be used for looking to buffer memory, the vedio data encoder (223 that voice data is encoded, 227), be used for looking behind the coding, voice data is distributed to looking of each display device (23) of holding of civil litigant participants, voice data distributor (224,228).
3. a kind of remote digital court's trial system as claimed in claim 1 based on finger print identifying and digital watermarking, it is characterized in that: described display device (23) comprises and is used for buffer memory from looking looking that audio collecting device (22) receives, looking of voice data, audio data buffer (231,232), be used for looking to buffer memory, what voice data was decoded looks, voice data demoder (233,234), be used for extracting and look, the watermark that embeds in the audio frequency, and the watermark that extracts sent to looking that finger print information demo plant (141) in the center control end (14) verifies, audio frequency watermark extraction apparatus (235,236), be used for looking to decoded, audio frequency carries out the synchronous audio sync device (237) of looking, and the display (238) that is used for video/audio after the display synchronization.
4. a kind of remote digital court's trial system based on finger print identifying and digital watermarking as claimed in claim 3 is characterized in that: described display device (23) also comprise be used for to decodedly look, voice data is processed, handle look, audio data processor.
5. as the described a kind of remote digital court's trial system of one of claim 1 to 4 based on finger print identifying and digital watermarking, it is characterized in that: described other civil litigant participants's ends (13) also are provided with digital signature device and/or electronic seal device, are used for e-file is carried out sign or seal.
6. as the described a kind of remote digital court's trial system based on finger print identifying and digital watermarking of one of claim 1 to 4, it is characterized in that: described display (238) is divided into a plurality of subregions, and every district is used to show the audio frequency of looking of civil litigant participants's one end.
7. a kind of remote digital court's trial system as claimed in claim 6 based on finger print identifying and digital watermarking, it is characterized in that: in the display device (24), when a certain viewing area did not have displaying contents, then the civil litigant participants with speech held corresponding viewing area by corresponding amplification; After this civil litigant participants holds speech to finish, narrow down to original size automatically.
8. a kind of remote digital court's trial system as claimed in claim 1 based on finger print identifying and digital watermarking, it is characterized in that: described center control end (14) also is provided with and looks, audio decoder, look, the audio sync device, all civil litigant participantses look closely audio collecting device (22) and the looking of its collection, voice data are being sent to other civil litigant participantses when holding, send to center control end (14) simultaneously, center control end (14) is to looking, after the voice data decoding, synchronous operation, being used for network direct broadcasting.
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Application publication date: 20100908 |