CN114666525A - Audio and video switching verification system based on ASIC structure - Google Patents
Audio and video switching verification system based on ASIC structure Download PDFInfo
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Abstract
The invention discloses an audio and video switching calibration system based on an ASIC structure, which comprises a data acquisition module, a storage module, a data analysis module, a time control module, a central processing module, an information switching module, an information calibration module, an error analysis module, a resolution monitoring module and a sample analysis module, wherein the sample analysis module and the time control module extract sample data according to data to be calibrated acquired by the data acquisition module and analyze the sample data to obtain a sample analysis result, the data analysis module performs state analysis on the whole switching process of multi-channel audio and video signals by combining the analysis results of the sampling analysis module and the error analysis module with the data to be calibrated, obtains calibration values by performing state transition analysis on state variables and sends the calibration values to the information calibration module to calibrate the audio and video signals, and improves the accuracy of audio and video signal switching by calibrating the calibration values, meanwhile, the efficiency of transmission, switching and analysis of audio and video signals is improved.
Description
Technical Field
The invention relates to the technical field of audio and video control, in particular to an audio and video switching verification system based on an ASIC structure.
Background
With the development of market economy and communication computing technology, the demand of video monitoring systems in banks, traffic, buildings and military facilities on the safety transmission prevention of audio and video information is increasing, the accurate switching of the audio and video information from multiple channels is an important guarantee for ensuring the safety transmission of the audio and video information, a switching chip on the market is used as a switching device of a matrix, digital switching is one of key technologies in video matrix switching, when the digital chip switching technology switches the audio and video signals, due to the singleness of functions of the digital chip, when the audio and video signals of multiple channels are switched and transmitted, the accurate switching of the multiple channels cannot be accurately switched, and the inherent switching of the digital chip brings difficulty to the transmission of the audio and video signals, in order to check the switching of the audio and video information of the multiple channels in time, the audio and video information is ensured to be smoothly transmitted and switched, and therefore an audio and video switching verification system based on an ASIC structure is provided.
Disclosure of Invention
In view of the above situation and in order to overcome the defects of the prior art, an object of the present invention is to provide an audio/video switching calibration system based on an ASIC structure, in which a sampling analysis module is used to perform sampling and analysis to obtain a sampling analysis result, an error analysis module is used to analyze errors caused by correlation between channels in a multi-channel audio/video switching process, a data analysis module is used to perform predictive analysis on state variables during switching of audio/video information by using a state transfer equation to obtain a calibration value, and by analyzing states before and after switching of audio/video signals, accurate switching of audio/video signals is ensured, and transmission and analysis efficiency of multi-channel audio/video information is improved.
The technical scheme includes that the audio and video switching verification system based on the ASIC structure comprises a data acquisition module, a storage module, a data analysis module, a time control module, a central processing module, an information switching module, an information verification module, an error analysis module, a resolution monitoring module and a sample analysis module, wherein the sample analysis module and the time control module extract sample data according to data to be verified acquired by the data acquisition module and analyze the sample data to obtain a sample analysis result, the data analysis module analyzes the data to be verified, the sample analysis result and the error analysis result of the error analysis module to obtain a verification value, and then the information verification module verifies the data to be verified generated by the information switching module according to the verification value, and the specific analysis process of the system is as follows:
(1) the data acquisition module acquires data of a switching process of the multi-channel audio and video information to obtain data to be verified, the data to be verified is stored in the storage module, the central processing module is a control center of the system, and the resolution monitoring module analyzes the resolution of the audio and video information transmission;
(2) the sampling analysis module acquires a sample of the data to be checked acquired by the data acquisition module to obtain sample analysis data, and analyzes the sample analysis data to obtain a sample analysis result, wherein the specific analysis process comprises the following steps:
step one, a time control module analyzes the number of channels switched by multi-channel audio and video information to obtain m acquisition processes, the corresponding acquisition time point interval in each acquisition process corresponds to the element value of a time acquisition sequence, the time acquisition sequence is obtained according to the detection process of a resolution monitoring module on audio and video signals, and the time control module numbers the audio and video information according to the sequence of information switching time among a plurality of channels and records the number as (S)1,S2,S3…Sm)，
Step two, the sampling analysis module respectively processes the audio and video information (S) of the m audio and video transmission channels1,S2,S3…Sm) Analyzing the attenuation change difference of the characteristic information of different time points in the switching process of each piece of audio and video information;
step three, one audio/video channel SiAccording to the time control module, in the transmission process of the audio and video information, S is controllediIs collected to obtainThe detected values of the n collected samples are recorded as
The variable quantity of the detection value of n collection samples of audio and video information in a switching process is recorded as a difference vector
After information video switching occurs and before information verification, analyzing changes brought by transmission of audio and video signal characteristics in different channel information according to the difference vector, wherein an analysis equation is as follows:
the method comprises the steps that K represents a change deviation value of an audio-video signal in a switching process in a sample acquisition area, i is a number of a channel switched during information switching, j represents a number of a detection value, W (p, j) represents a weight of influence of the channel on the audio-video signal when the detection value changes, and when the audio-video signal is subjected to one-to-one and one-to-many information switching, the calculated value of K is used for representing the deviation degree of the switching signal;
(3) the error analysis module analyzes cross errors among transmission channels of the audio and video information to obtain an error analysis result epsilon, and sends the error analysis result to the data analysis module, the data analysis module analyzes according to the state of switching of the audio and video information to obtain a state quantity, and then analyzes according to the state quantity to obtain a check value, and the specific analysis process of the check value is as follows:
step 1, when audio and video signals are simultaneously switched, a data analysis module analyzes the transmission state of the audio and video signals by using a state transition equation to obtain a state quantity, wherein the specific analysis equation is as follows:
wherein t representsDifferent moments in the information switching process, vtRepresenting state variables in the audio and video transmission process, representing influence errors among channels analyzed by the error analysis module, and ct(vt) Representing the combined impact parameter, f, during a handovert(vt) Representing a decision variable, K, for the evaluation of the switching of the audio-video signal at time tt(vt) Indicating v during handovertA function of the degree of deviation K;
step 2, comprehensive influence parameter ct(vt) The analytical equation of the state variable and the comprehensive influence parameter changes along with the change of the state variable as follows:
wherein v istThe expressed state variables have different time values corresponding to different times, and the average value of all the state quantities detected at the time t and occurring the switching process is recorded as
The detection index function of the audio and video signals at different moments is represented, a represents the number of the channel switching, and XtIs a variable composed of detection parameters of audio/video signals, Q represents the number of detection parameters, betat(Xt) Is a correction function, and is switched according to the current state variable f of the audio/video signalt(vt) Obtaining state variables of the switched audio and video signals, and further analyzing the obtained state variables;
step 3, obtaining the check value of the audio and video signal by calculating the state variables at different moments in the multi-channel audio and video switching process, and sending the check value of the audio and video signal to an information check module;
(4) and the information checking module performs checking analysis on the audio and video information according to the checking value obtained by the data analysis module, and when the detection value exceeds the detection value, the information checking module sends the abnormal information to the central processing module.
The error analysis module analyzes the transmission switching data in the data to be checked in the audio and video information transmission process to obtain an error analysis result, the error analysis module analyzes the error between the audio and video switching notifications according to the transmission switching data of the audio and video information to obtain an error analysis result epsilon, and all information channels with information switching occurring at the same time t are recorded as qii is (1,2,3, … h), the number of channels switched when h represents, the error analysis module analyzes the coupling among h audio/video information switching channels, collects the characteristic values of h information channels, corresponds the characteristic values of all the information channels with position points in a three-dimensional space, calculates the information entropy cross value of the information transmission channel, and the cross correlation function is as follows:
wherein h represents the number of acquisition channels, GiG denotes a unit information entropy of the channel information transmission channel, and X ═ X0,y0,z0) Position point of three-dimensional space for switching channel as center, (x)i,yi,zi) And the position points are position points of the discrete switching channel, the calculated information entropy cross value is analyzed to obtain an error analysis result of the error analysis module, and the error analysis result is sent to the error analysis module.
The error analysis module maps characteristic values of the information channels into a three-dimensional space, selects characteristic parameters of the audio and video channels changing along with the transmission of audio and video signals in the process of transmitting the audio and video information in the channels, calculates the rate of the change of the characteristic parameters, maps the rate into the three-dimensional space to obtain discrete position points, and performs mean value calculation according to the information entropy cross values to obtain an error analysis result epsilon.
The information switching module switches audio and video transmission channels according to an audio and video information switching instruction sent by the central processing module, one-to-one, one-to-many and many-to-one switching of the audio and video information is carried out by utilizing an audio and video switching matrix, the data acquisition module acquires data generated in the switching process to obtain data to be checked, and the information checking module checks the audio and video information in the data to be checked according to a checking value obtained by analysis of the data analysis module.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the data analysis module of the system utilizes the analysis results of the sampling analysis module and the error analysis module to combine with the data to be detected to carry out state analysis on the whole switching process of the multi-channel audio/video signals, and obtains a check value by performing state transition analysis on the state variable, and sends the check value to the information check module, the information check module checks the audio/video signal according to the check value, the verification of the audio and video signals by the verification value obtained by the data analysis module on the switching and transmission states takes all the influences of the simultaneous audio and video signal switching into consideration, the verification of the verification value is a detection quantity of the audio and video signals, the accuracy of the audio and video signal switching is improved by the verification of the verification value, meanwhile, the efficiency of transmission, switching and analysis of audio and video signals is improved, and the switching cost of multi-channel audio and video information is reduced.
2. A sample analysis module of the system collects samples in the transmission process of audio and video information according to a time control module to obtain sample analysis data, the data to be detected is collected according to a time collection sequence obtained by the time analysis module to obtain the sample analysis data, the time interval of the time collection sequence is related to the time control module, the sample collection module obtains a variation deviation value transmitted by an audio and video channel through the analysis of the sample analysis data, the variation deviation value represents the variation degree of an information transmission channel, meanwhile, when the error analysis module switches multi-channel audio and video signals, the correlation relation and cross coupling between the channels are analyzed to obtain an error analysis result, characteristic information of the channels is mapped into a three-dimensional space under different multi-channel transmission modes to obtain discrete points, and the cross information entropy between the multiple channels is obtained through the analysis of the discrete points, the sampling analysis module and the error analysis module of the system take the internal single signal transmission and the mutual influence among a plurality of channels in the transmission process of the multi-channel audio and video signals into consideration, so that the cost of software and hardware in the switching process of the audio and video information is increased, the accuracy of switching the audio and video information channels is improved by checking the switching process of the audio and video information, and the transmission efficiency of the audio and video signals is improved.
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FIG. 1 is an overall block diagram of the system;
fig. 2 is a flowchart of the overall calculation.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
An audio and video switching and checking system based on an ASIC structure comprises a data acquisition module, a storage module, a data analysis module, a time control module, a central processing module, an information switching module, an information checking module, an error analysis module, a resolution monitoring module and a sample analysis module, and has higher and higher requirements on the transmission and switching of audio and video information along with the development of market economy, thereby promoting the development of a video monitoring system, the technical core of digital exchange is the development of a chip, for example, an integrated chip under an ASIC framework, the multifunctionality of the chip has good energy efficiency, but when the audio and video information of a plurality of channels is switched, the digital exchange is influenced by the fixed framework of the integrated chip, the upgrading of the switching system of a plurality of audio and video signals is difficult, and in the switching process of the audio and video multi-channel information, the checking process of the audio and video signals is also an important measure for ensuring the high-efficiency transmission of the audio and video information, the data analysis module analyzes the data to be verified, the sample analysis result and the error analysis result of the error analysis module to obtain a verification value, and then the information verification module verifies the data to be verified generated by the information switching module according to the verification value, wherein the specific analysis process of the system is as follows:
(1) the data acquisition module acquires data in the switching process of multi-channel audio and video information to obtain data to be verified and stores the data to be verified in the storage module, the access at different time in the switching process of the audio and video information and the characteristic parameters of the switched audio and video information are different, the data acquisition module acquires the data in the whole switching process of the audio and video information, the central processing module is a control center of the system, the resolution monitoring module analyzes the resolution of audio and video information transmission, and the frequency and the resolution of the audio and video signals transmitted at different moments represent the transmission state of the audio and video information;
(2) selecting a sample acquisition area of an information transmission channel in the transmission process according to the change of the detection value of the detection point of each channel, and then carrying out sample acquisition on data to be checked in the sample acquisition area through a sample analysis module, namely carrying out sample acquisition on the data to be checked acquired by the data acquisition module through the sample analysis module to obtain sample analysis data, and analyzing the sample analysis data to obtain a sample analysis result, wherein the specific analysis process comprises the following steps:
the method comprises the steps that firstly, a time control module analyzes according to parameter specific diagnosis of audio and video information in each transmission channel and monitoring results of a rate-of-differentiation monitoring module to obtain time acquisition sequences, the time acquisition sequences of different acquisition processes are different, element points of the time acquisition sequences correspond to acquired time points, differences among the element points are acquired time intervals, the time control module analyzes according to the number of channels switched by the multi-channel audio and video information to obtain m acquisition processes, the corresponding acquisition time point interval in each acquisition process corresponds to an element value of the time acquisition sequence, the time acquisition sequences are obtained according to detection processes of the audio and video signals by a resolution monitoring module, and the time control module obtains the time acquisition sequences according to detection processes of the multiple channelsThe audio and video information is numbered by the sequence of inter-information switching time and is marked as (S)1,S2,S3…Sm)，
Step two, the sampling analysis module respectively processes the audio and video information (S) of the m audio and video transmission channels1,S2,S3…Sm) Analyzing the attenuation change difference of the characteristic information of different time points in the switching process of each audio and video information according to the characteristic information of the audio and video information corresponding to the n acquisition time points;
step three, one audio/video channel SiAccording to the time control module, in the transmission process of the audio and video information, S is controllediThe detection values of n collected samples obtained by collection are recorded as
The variation of the detection values of n collected samples of audio and video information in a switching process is recorded as a difference vector
After information video switching occurs and before information verification, changes brought by transmission of audio and video signal characteristics in different channel information are analyzed according to the difference vector, and an analysis equation is as follows:
k represents a change deviation value of an audio/video signal in a switching process in a sample acquisition area, i is the number of a channel switched during information switching, j represents the number of a detection value, W (p, j) represents the weight of the influence of the channel on the audio/video signal when the detection value is changed, and when the audio/video signal is subjected to one-to-one or one-to-many information switching, the calculated value of K is used for representing the deviation degree of the switching signal;
(3) the error analysis module analyzes the cross error between the transmission channels of the audio and video information to obtain an error analysis result epsilon, and the error analysis result is sent to a data analysis module, the data analysis module analyzes according to the state of the audio and video information switching to obtain a state quantity, and then analyzes according to the state quantity to obtain a check value, at different moments, the characteristic parameters and the switching states of the audio and video information are different, the state variable of the whole switching process of the audio and video information is taken as a research object, the state variable at the next moment after transmission is predicted through a state transition equation, in the process of state analysis, the analysis results of the acquisition analysis module and the error analysis module are analyzed simultaneously, the errors are also taken into account, and obtaining an optimal check value by utilizing the analysis process of the state variable, wherein the specific analysis process of the check value is as follows:
step 1, when audio and video signals are simultaneously switched, a data analysis module analyzes the transmission state of the audio and video signals by using a state transition equation to obtain a state quantity, wherein the specific analysis equation is as follows:
where t represents different times during the information switching process, vtRepresenting state variables in the audio and video transmission process, representing influence errors among channels analyzed by the error analysis module, and ct(vt) Representing the combined impact parameter, f, during a handovert(vt) Representing a decision variable, K, for the evaluation of the switching of the audio-video signal at time tt(vt) Indicating v during handovertAnd a relation function with the deviation degree K, when a plurality of channels of audio and video information transmitted by one channel are switched, a plurality of variation deviation values can be obtained, and the analysis K can be used for analyzingt(vt) Analyzing a plurality of switching processes by functional relation with the state variables;
step 2, comprehensive influence parameter ct(vt) The analytical equation of the state variable and the comprehensive influence parameter changes along with the change of the state variable as follows:
wherein v istThe expressed state variables have different time values corresponding to different times, and the average value of all the state quantities detected at the time t and occurring the switching process is recorded as
The detection index function of the audio and video signals at different moments is represented, a represents the number of the channel switching, and XtIs a variable composed of detection parameters of audio/video signals, Q represents the number of detection parameters, betat(Xt) Is a correction function, according to the current state variable f of the audio-video signal switchingt(vt) Obtaining the state variable of the switched audio and video signals, and further analyzing the obtained state variable;
step 3, when multi-channel audio and video information switching occurs, the state of a switching system is changed, a state value after switching is completed is determined through analysis of a selected state variable in the switching state, a check value obtained through analysis is checked on data to be checked by taking a state quantity obtained through analysis of a state transfer equation as a basis, the accuracy of audio and video signal transmission is ensured, the check value of the audio and video signals is obtained through calculating the state variables at different moments in the multi-channel audio and video switching process, and the check value of the audio and video signals is sent to an information check module;
(4) and the information checking module performs checking analysis on the audio and video information according to the checking value obtained by the data analysis module, and when the detection value exceeds the detection value, the information checking module sends the abnormal information to the central processing module.
In the process of switching multi-channel audio and video information, coupling influence also exists among a plurality of audio and video information transmission channels, in order to verify audio and video signals in the process of switching multi-channel audio and video, an error analysis module analyzes the correlation relation among the channels switched by the audio and video information, and the error analysis module analyzes the correlation relation according to the to-be-corrected audio and video information in the process of transmitting the audio and video informationAnalyzing transmission switching data in the test data to obtain an error analysis result, analyzing errors between audio and video switching notifications by an error analysis module according to the transmission switching data of the audio and video information to obtain an error analysis result epsilon, and recording all information channels with information switching at the same time t as qii is (1,2,3, … h), the number of channels switched when h represents, the error analysis module analyzes the coupling among h audio/video information switching channels, collects the characteristic values of h information channels, corresponds the characteristic values of all the information channels with position points in a three-dimensional space, calculates the information entropy cross value of the information transmission channel, and the cross correlation function is as follows:
wherein h represents the number of acquisition channels, GiG denotes a unit information entropy of the channel information transmission channel, and X ═ X0,y0,z0) Position point of three-dimensional space for switching channel as center, (x)i,yi,zi) And the position points are position points of the discrete switching channel, the calculated information entropy cross value is analyzed to obtain an error analysis result of the error analysis module, and the error analysis result is sent to the error analysis module.
Furthermore, the error analysis module maps characteristic values of the information channels into a three-dimensional space, selects characteristic parameters of the audio and video channels changing along with the transmission of audio and video signals in the process of transmitting the audio and video information in the channels, calculates the rate of the change of the characteristic parameters, maps the rate into the three-dimensional space to obtain discrete position points, and performs mean value calculation according to the information entropy cross value to obtain an error analysis result epsilon.
The information switching module switches audio and video transmission channels according to an audio and video information switching instruction sent by the central processing module, and switches audio and video information in a one-to-one, one-to-many and many-to-one mode by utilizing an audio and video switching matrix, the audio and video information switching matrix realizes conversion by taking an integrated chip as a carrier, the data acquisition module acquires data generated in the switching process to obtain data to be verified, and the information verification module verifies the audio and video information in the data to be verified according to a verification value obtained by analysis of the data analysis module.
The resolution monitoring module analyzes and monitors the resolution in the transmission process of the audio and video signals, the time control module obtains an optimal time acquisition sequence according to the instructions of the resolution monitoring module and the central processing module, the difference value between adjacent element values in the time acquisition sequence is an acquisition interval, and the transmission process and the switching process of different audio and video information correspond to different time acquisition sequences.
When the invention is used, the system mainly comprises a data acquisition module, a storage module, a data analysis module, a time control module, a central processing module, an information switching module, an information verification module, an error analysis module, a resolution monitoring module and a sample analysis module, wherein the sample analysis module and the time control module extract sample data according to data to be verified acquired by the data acquisition module and analyze the sample data to obtain a sample analysis result, firstly, the time analysis module analyzes the data to be detected through the monitoring result of the resolution monitoring module and the data to be detected to obtain a time acquisition sequence, the time intervals of the time acquisition sequence can be unequal, then, the sample analysis module acquires the data to be detected according to the time acquisition sequence obtained by the time control module to obtain sample analysis data, and obtains a variation deviation value transmitted by an audio and video channel through the analysis of the sample analysis data, the change degree of an audio and video information transmission channel is shown, meanwhile, when an error analysis module switches multi-channel audio and video signals, the correlation relationship and cross coupling between the channels are analyzed to obtain an error analysis result, characteristic information of the channels is mapped into a three-dimensional space under different multi-channel transmission modes to obtain discrete points, cross information entropy between the multiple channels is obtained through analyzing the discrete points, so that the correlation relationship between the multiple channels is obtained, a sampling analysis module and an error analysis module of the system are utilized to take the mutual influence between the internal single signal transmission and the multiple channels in the transmission process of the multi-channel audio and video signals into account, and then, a data analysis module utilizes the analysis results of the sampling analysis module and the error analysis module to combine to-be-detected data to carry out state analysis on the switching process of the whole multi-channel audio and video signals, the state of the state variable is transferred and analyzed to obtain a check value, the check value is sent to the information check module, the information check module checks the audio and video signals according to the check value, the accuracy of audio and video signal switching is improved through checking the check value, meanwhile, the efficiency of transmission, switching and analysis of the audio and video signals is improved, the switching cost of multi-channel audio and video information is reduced, the accuracy of audio and video information channel switching is improved through checking the audio and video information switching process, and the transmission efficiency of the audio and video signals is improved.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (5)
1. The utility model provides an audio frequency and video switches check-up system based on ASIC structure, which comprises a data acquisition module, a storage module, a data analysis module, time control module, central processing module, information switching module, information check-up module, error analysis module, resolution monitoring module, sample analysis module and time control module are according to the data of waiting to check-up that data acquisition module gathered, and analysis obtains sample analysis result, data analysis module is according to waiting to check-up data, sample analysis result, the error analysis result of error analysis module carries out analysis and obtains the check-up value, again by information check-up module according to the check-up value the data of waiting to check-up that information switching module produced, the concrete analytic process of system is as follows:
(1) the data acquisition module acquires data of a switching process of the multi-channel audio and video information to obtain data to be verified, the data to be verified is stored in the storage module, the central processing module is a control center of the system, and the resolution monitoring module analyzes the resolution of the audio and video information transmission;
(2) the sampling analysis module acquires a sample of the data to be checked acquired by the data acquisition module to obtain sample analysis data, and analyzes the sample analysis data to obtain a sample analysis result, wherein the specific analysis process comprises the following steps:
step one, a time control module analyzes the number of channels switched by multi-channel audio and video information to obtain m acquisition processes, the corresponding acquisition time point interval in each acquisition process corresponds to the element value of a time acquisition sequence, the time acquisition sequence is obtained according to the detection process of a resolution monitoring module on the audio and video signals, and the time control module numbers the audio and video information according to the sequence of information switching time among a plurality of channels and records the number as (S)1,S2,S3…Sm)，
Step two, the sampling analysis module respectively processes the audio and video information (S) of the m audio and video transmission channels1,S2,S3…Sm) Analyzing the attenuation change difference of the characteristic information of different time points in the switching process of each audio and video information according to the characteristic information of the audio and video information corresponding to the n acquisition time points;
step three, one audio/video channel SiAccording to the time control module, in the transmission process of the audio and video information, S is controllediThe detection values of n collected samples obtained by collection are recorded as
The variable quantity of the detection value of n collection samples of audio and video information in a switching process is recorded as a difference vector
Before information verification after information video switching, according to the difference vectorThe method comprises the following steps of analyzing the change brought by the transmission of audio and video signal characteristics in different channel information, wherein an analysis equation is as follows:
k represents a change deviation value of an audio/video signal in a switching process in a sample acquisition area, i is the number of a channel switched during information switching, j represents the number of a detection value, W (p, j) represents the weight of the influence of the channel on the audio/video signal when the detection value is changed, and when the audio/video signal is subjected to one-to-one or one-to-many information switching, the calculated value of K is used for representing the deviation degree of the switching signal;
(3) the error analysis module analyzes cross errors among transmission channels of the audio and video information to obtain an error analysis result epsilon, and sends the error analysis result to the data analysis module, the data analysis module analyzes according to the state of switching of the audio and video information to obtain a state quantity, and then analyzes according to the state quantity to obtain a check value, and the specific analysis process of the check value is as follows:
step 1, when audio and video signals are simultaneously switched with audio and video information, a data analysis module analyzes the transmission state of the audio and video signals by using a state transition equation to obtain a state quantity, wherein the specific analysis equation is as follows:
where t represents different times during the information switching process, vtRepresenting state variables in the audio and video transmission process, representing influence errors among channels analyzed by the error analysis module, and ct(vt) Representing the combined impact parameter, f, during a handovert(vt) Representing a decision variable, K, for the evaluation of the switching of the audio-video signal at time tt(vt) Indicating v during handovertRelation to degree of deviation KA function;
step 2, comprehensive influence parameter ct(vt) The analytical equation of the state variable and the comprehensive influence parameter changes along with the change of the state variable as follows:
wherein v istThe expressed state variables are different corresponding to different time values, and the average value of all the state quantities detected at the time t and having the switching process is recorded as
The detection index function of the audio and video signals at different moments is represented, a represents the number of the channel switching, and XtIs a variable composed of detection parameters of audio/video signals, Q represents the number of the detection parameters, and betat(Xt) Is a correction function, according to the current state variable f of the audio-video signal switchingt(vt) Obtaining state variables of the switched audio and video signals, and further analyzing the obtained state variables;
step 3, obtaining the check value of the audio and video signal by calculating the state variables at different moments in the multi-channel audio and video switching process, and sending the check value of the audio and video signal to an information check module;
(4) and the information checking module performs checking analysis on the audio and video information according to the checking value obtained by the data analysis module, and when the detection value exceeds the detection value, the information checking module sends the abnormal information to the central processing module.
2. The audio/video switching verification system based on the ASIC structure as claimed in claim 1, wherein the error analysis module analyzes the transmission switching data in the data to be verified in the audio/video information transmission process to obtain the error analysis result, and the error analysis module notifies the error between the audio/video switching notifications according to the transmission switching data of the audio/video informationAnalyzing to obtain an error analysis result epsilon, and recording all information channels with information switching at the same time t as qii is (1,2,3, … h), the number of channels switched when h represents, the error analysis module analyzes the coupling among h audio/video information switching channels, collects the characteristic values of h information channels, corresponds the characteristic values of all the information channels with position points in a three-dimensional space, calculates the information entropy cross value of the information transmission channel, and the cross correlation function is as follows:
wherein h represents the number of acquisition channels, GiG denotes a unit information entropy of the channel information transmission channel, and X ═ X0,y0,z0) Position point of three-dimensional space for switching channel as center, (x)i,yi,zi) And the position points are position points of the discrete switching channel, the calculated information entropy cross value is analyzed to obtain an error analysis result of the error analysis module, and the error analysis result is sent to the error analysis module.
3. The system according to claim 2, wherein the error analysis module maps the characteristic values of the information channels into a three-dimensional space, selects characteristic parameters of the audio/video channels that change with the transmission of audio/video signals during the transmission of audio/video information in the channels, calculates the rate at which the characteristic parameters change, and maps the rate into the three-dimensional space to obtain discrete location points, and the error analysis module performs mean calculation according to the entropy cross value of the information to obtain an error analysis result epsilon.
4. The system according to claim 1, wherein the information switching module switches audio/video transmission channels according to an audio/video information switching instruction sent by the central processing module, the audio/video information is switched by using an audio/video switching matrix, the data acquisition module acquires data generated in the switching process to obtain data to be verified, and the information verification module verifies the audio/video information in the data to be verified according to a verification value obtained by the analysis of the data analysis module.
5. The system according to claim 1, wherein the resolution monitoring module analyzes and monitors the resolution of the audio/video signal during transmission, the time control module obtains an optimal time acquisition sequence according to the instruction of the resolution monitoring module and the central processing module, the difference between adjacent element values in the time acquisition sequence is an acquisition interval, and the transmission process and the switching process of different audio/video information correspond to different time acquisition sequences.
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