CN100399813C - Method for realizing channel automatic correspondence based on electronic program guide - Google Patents
Method for realizing channel automatic correspondence based on electronic program guide Download PDFInfo
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- CN100399813C CN100399813C CNB2005100598410A CN200510059841A CN100399813C CN 100399813 C CN100399813 C CN 100399813C CN B2005100598410 A CNB2005100598410 A CN B2005100598410A CN 200510059841 A CN200510059841 A CN 200510059841A CN 100399813 C CN100399813 C CN 100399813C
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Abstract
The present invention discloses a method for realizing automatic correspondence of channels on the basis of an electronic program guide (EPG), which is suitable for a system which comprises a user terminal and a server which can provide station marks and EPG program information, the method for realizing automatic correspondence of channels on the basis of an electronic program guide (EPG) comprises the steps that a. the user terminal respectively obtains the needed standard station mark and the needed EPG program information; b. a channel name extracted from picture data of the station mark and a standard channel name extracted from the EPG program information are matched to obtain the corresponding relation between the standard station mark and the channel name; c. the user terminal reads station mark pictures of a currently played channel and matches the station mark pictures and the picture data of the standard station mark, the standard station mark corresponding to the currently played channel is determined, and then the corresponding relation between the currently played channel and the channel name in the EPG program information is determined according to the corresponding relation obtained in the step b. By adopting the method for realizing automatic correspondence of channels on the basis of an electronic program guide (EPG), the problem of automatic correspondence between the currently played channel and the channel name in the Online EPG service can be fundamentally solved.
Description
Technical field
The present invention relates to the television channel matching technique, refer to a kind of method that realizes the automatic correspondence of analog television channels based on electronic program guides especially.
Background technology
In field of broadcast televisions, along with the develop rapidly of Digital Television and improving constantly of customer requirements, electronic program guides (EPG) business becomes an important component part of current simulated television and following Digital Television (DVB) gradually.In the simulated television epoch, because number of channels is limited, the TV programme that people can oneself like by simple remote controller traversal method search.Yet along with the arrival of digital Age, number of channels sharply increases, and channel number becomes hundreds of from tens, and so, simple traversal will become a kind of burden, and is easy to miss the user and wishes the program watched.The EPG business can in time provide abundant, up-to-date programme distant information based on the service interaction of similar internet, and can succinctly and apace carry out the programme content retrieval for the user, thereby greatly promotes the development of TV broadcast business.
So-called electronic program guides (EPG, Electronic Program Guide) is actual to be exactly a kind of real time programme form that is applied to television-viewing, and program can be had access to, be arranged to this program form at any time.Two main occupation modes of EPG are at present: program predetermination and program browsing.For program predetermination, its basic function is that the information of utilizing EPG to provide is arranged the program that will broadcast future, comprise performance recording, program reminding or the like, the user can preestablish oneself program of watching of expectation according to the information that EPG provides, so, the channel that will automatically switch to setting in desired time carries out program viewing or performance recording.For program browsing, its basic function is to utilize the information that EPG provides that the program that will broadcast future is grasped broadcast time, understands the programme content summary, is similar to present user and browses the TV programme newspaper.
As can be seen, EPG can provide real-time help for the user searches and locatees TV programme on the one hand, on the other hand can be for the user provides content information beyond the more TV programme, such as: check programm name, program send between sowing time/actor information of period, program, the brief introduction of program even TV guide fragment, utilize the own program of being liked in programme information retrieval location that is provided.Lift a simple example, the user sees a movie title, and do not know what concrete content is, also just can't determine whether watch, at this moment, just can utilize content that program brief introduction that EPG provides or TV guide fragment further understand this film and the interest that whether meets oneself, because the figure sector-meeting of the brief introduction of a film or a few width of cloth movie contents has great help to the user.Simultaneously, information such as time, brief introduction have been arranged, the user can also realize personalized timed recording service, for example: the timed recording of setting according to the timed recording of specific channel setting, according to Pgmtime and timed recording of setting according to the programme content brief introduction or the like.In a word, EPG can provide abundant programme information for the user, satisfies the various demand of user.
At present, the EPG operation system adopts two kinds of different implementations to provide EPG performance guide information to the user: a kind of is by the mode of network such as Ethernet or wireless network download, also be referred to as online EPG (Online EPG), EPG programme information under this mode is generally extend markup language (ExtendedMark Language) XML form or text formatting (TXT, Text), each have concrete Field Definition, this mode all is suitable for simulated television or Digital Television.Another is the method that is integrated in Digital Television (DVB-C) the video system stream (Video System Streaming), can be referred to as teletext EPG (Teletext EPG), this method is with service/user profile such as EPG (SI, Service/Subscriber Information) based on the MPEG2-System standard, be packaged into basic information packet stream (EPS by special packing device (Packager), Elementary Packet Stream) or transport stream (TS, Transformation Stream), be transferred on the end user device from sending front end (Head-end) by the DVB-C transmission standard then, this mode only is applicable in digital television program Play System and the receiving equipment.
Widely used EPG business is mainly Online EPG mode on simulated television and Digital Television at present, just terminal equipment needs directly to connect Ethernet or enters Ethernet by the wireless mode connection, thereby download the required XML form or the EPG programme of TXT form from specific EPG server, after resolving on the terminal equipment, obtain corresponding programme information by respective field information.
Fig. 1 is the realization flow figure that sends and receive under the Online EPG mode, idiographic flow is: the terminal equipment by integrated EPG business sends EPG programme information download request, this request is generally initiated by the module of being responsible for EPG service communication and the parsing of EPG programme information in the equipment, carries the television channel name parameter of request to some extent in the solicited message that is sent; In case the EPG server receives this request, then by the television channel name parameter in the request of extracting, locate the EPG programme information of EPG server this locality, matching E PG programme information is sent to the terminal equipment of the request of initiation; After terminal equipment receives required EPG programme information, send confirmation of receipt and be notified to the EPG server, so far complete successfully the request and the download of EPG programme information.
In the simulated television based on Online EPG mode receives and plays, current broadcast television channel can't be as Telext EPG mode with the corresponding of channel designation, can directly easily obtain by resolving complete EPG programme information, because the transmission of the transmission of EPG programme information and TV signal is separate under this mode, be exactly that the EPG programme information comes from two relatively independent different approach with TV signal: TV signal comes from camera cable (Cable) specifically; The EPG programme information comes from network, comes from network download and parsing, does not have direct corresponding relation between two kinds of signals.Though, for cable television operators, can issue the EPG programme information according to the order that simulated television broadcasts frequency, but because TV signal sends to each relay base even sub-district relay station, when being transmitted to user terminal again, the always skew that brings frequency, it obviously is irrealizable therefore forming corresponding incidence relation according to distribution order.
At present, realize the related corresponding of current broadcast television channel and EPG programme information mid band title, common way is: parse channel designation earlier from the EPG programme information that network is directly downloaded; Then, the user manually sets up related corresponding relation by the channel designation in television image that contrasts current broadcast and the EPG programme information of being downloaded.So, not only bring great inconvenience, and ease of use issues is also brought considerable influence to the application and the popularization of EPG business to the user; Simultaneously, also there is the problem of makeing mistakes easily in manual configuration.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of and realizes the method that channel is corresponding automatically based on electronic program guides, can be from basic solutions Online EPG service current broadcasting channel and the automatic corresponding problem of channel designation.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes the automatic correspondence of channel based on electronic program guides (EPG), be applicable to comprise user terminal and the standard station symbol can be provided and the system of the server of EPG programme information in, this method may further comprise the steps: a. user terminal obtains required standard station symbol and required EPG programme information respectively;
B. the standard channel designation that extracts in channel designation that the sheet extracting data of standard unit being marked on a map goes out and the EPG programme information mates, and obtains the related corresponding relation between standard station symbol and the standard channel designation;
C. user terminal reads the station symbol image of current broadcasting channel, station symbol image and the standard unit sheet data of marking on a map are mated, determine the pairing standard station symbol of current broadcasting channel, according to the resulting related corresponding relation of step b, determine the corresponding relation between the standard channel designation in current broadcasting channel and the EPG programme information then.
Wherein, step c is described is read as: intercept and capture device is intercepted and captured once current picture second every T station symbol picture position by the timing picture.
In the such scheme, step c is described to be mated station symbol image and the standard unit sheet data of marking on a map to be specially: directly more current station symbol view data that reads and the standard unit sheet data of marking on a map; Perhaps, step c is described to be mated station symbol image and the standard unit sheet data of marking on a map to be specially: mark standard unit on a map sheet data and the current station symbol image that reads as input parameter, discern by image model identification comparison algorithm.Wherein, described pattern recognition comparison algorithm is wavelet analysis algorithm or discrete cosine transform (DCT) algorithm or two-dimensional Fourier transform (DFT) algorithm.
In the such scheme, the described coupling of step c further comprises: the station symbol image that repeats to read M current picture, the sheet data of at every turn the station symbol view data that read and standard unit being marked on a map are mated, and obtain matching probability, M time matching probability are smoothly analyzed again.
In the such scheme, described standard station symbol is stored in the station symbol data server, and described EPG programme information is stored in the EPG server.Wherein, described station symbol data server and EPG server are same server, or are different servers.
The method that realizes the automatic correspondence of channel based on electronic program guides provided by the present invention, because the station symbol of each television channel all has the feature of standard, mode by image recognition, can obtain station symbol view data shown in the current television channel program picture, again in conjunction with the characteristic of all unique corresponding television channel of each station symbol, the station symbol view data obtained and channel designation from the EPG programme information of network download are mated, can obtain the corresponding relation between current broadcasting channel and the channel designation automatically, and then fundamentally solve the correspondence problem of broadcasting channel and channel designation in the Online EPG service.
Method of the present invention can be carried out on the backstage fully automatically, that is: limit television channel searching, current television channel name of playing is given on the limit automatically, and, can also realize the EPG programme information of the current broadcast television channel of synchronization association, remove the user from and carried out the complex work amount of manual respective operations, particularly when television channel is more and more, if the user searches platform and wants manual correspondence once at every turn, its workload will be quite huge, will produce influence greatly to the ease for use of EPG business, and the present invention alleviate realization broadcasting channel and channel designation greatly, even the workload and the complexity of EPG programme information correspondence, more meet user's use habit.
Self-adaption frequency channel corresponded manner proposed by the invention, only need carry out operations such as image recognition and characteristic matching on the backstage, can optimize and simplify the mutual design in the multimedia terminal equipment, reduce the development difficulty of upper application software, and reduce cost, can also promote availability and the ease for use of using interactive operation, and the portability of upper application software and extensibility.
Description of drawings
Fig. 1 is the realization flow figure that sends and receive under the Online EPG mode;
Fig. 2 is the enforcement illustration of EPG programme information storage in the 2-D data storehouse;
Fig. 3 realizes the flow chart of automatic correspondence for station symbol among the present invention and channel designation;
Fig. 4 is realization flow figure corresponding automatically between current playing frames among the present invention and the station symbol.
Embodiment
The EPG programme information comprises title and the broadcast time section of program, the brief introduction of program, performer's brief introduction of program and the classification under the program of TV programme of standard name, the channel correspondence of channel, as amusement, physical culture, finance and economics or the like, terminal equipment is downloaded and parsing EPG programme information from the EPG server by the EPG programme information plug-in unit of self downloading from the EPG server, therefrom extracts required information then.
Here, described EPG programme information plug-in unit is the logical functional entity with the download of EPG programme information and analytical capabilities, and this EPG programme information plug-in unit carries out with HTTP mode and EPG server alternately.Each EPG server all has one's own EPG programme information plug-in unit, be positioned in the EPG server, the Any user terminal need be when certain EPG server be downloaded corresponding EPG programme information, download corresponding EpG programme information plug-in unit from this EPG server earlier, utilize the EPG programme information plug-in unit of being downloaded to download required EPG programme information again from the EPG server of correspondence.A user terminal can be downloaded a plurality of EPG programme information plug-in units simultaneously, and utilizes the EPG programme information plug-in unit of being downloaded to download required EPG programme information from different EPG servers.How the particular user terminal downloads EPG programme information plug-in unit, how to utilize EPG programme information plug-in unit to download required EPG programme information from the EPG server, open in another patent application, is not described in detail in this.
The EPG programme information of downloading from the EPG server is stored on the user terminal after resolving, the EPG programme information of this download can also offer the user by the user interface (UI) that is provided with on the user terminal, such as: show that the EPG programme information gives the user, plays the EPG programme information to the user etc.The EPG programme information of being downloaded can be stored as the database of two dimension according to the incidence relation between the information, such as: with all programme informations of every day with channel designation and broadcast time section divide, user terminal extracts channel designation from the EPG programme information that parses, and pairing all programs of each channel are stored in the 2-D data storehouse, as shown in Figure 2 on a time period.What Fig. 2 showed is the programme information on Friday on the 28th January in 2005, wherein, the longitudinal axis in 2-D data storehouse is a channel designation, and transverse axis is the time period, be mapped be exactly each concrete channel concrete some day from morning the 0:00 point to all the program arrangements evening on the same day 11:59.
In actual applications, in order to support user oneself to revise channel designation, important name (Chief) and another name (Alias) two channel designation parameter items are set for simultaneously each channel, the standard channel designation that will parse from the EPG programme information saves as the important name in the channel designation parameter item, and the channel designation after the user's modification is saved as another name in the channel designation parameter item.When by user interface channel designation information being offered the user, generally based on rule is: show another name when the another name parameter item is arranged, show important name when not calling parameter item, so, more convenient user watches and uses.
As everyone knows, each television channel belongs to a TV station, all can on the program picture of current broadcast, the superpose station symbol of corresponding TV station of the TV programme of all channels, and for example: the station symbol of Channel 1 on China Central Television's correspondence is CCTV-1.General station symbol adopts the BMP picture format, and all station symbols are unified to be managed, and has the feature of standard; And it is relatively-stationary that station symbol and each provide the relation between the TV station of TV programme, even the station symbol that has directly adopts is exactly enterprise trademark (Logo), can arbitrarily not switch and change substantially.Therefore, fully can according to the station symbol data server that do not coexist of TV station safeguard one all broadcasting the station symbol database of TV station, all standard station symbols that provide in the database can be unified to obtain from manager; This database is independent of the EPG programme information and propagates.At present, consider that just station symbol may vicissitudinous situation, station symbol is not broadcasted as an information field of EPG programme information and transmitted, but adopt independently transmission.
Though, can obtain respectively in the station symbol database station symbol and through the channel designation in the EPG programme information of resolving, but do not have incidence relation between the two, therefore, how the present invention has provided channel designation and corresponding station symbol corresponding realization flow automatically, as shown in Figure 3, the realization flow of automatic corresponding station symbol of the present invention and channel designation may further comprise the steps:
At first user terminal is carried out two parallel process 3a1～3a6 and 3b1～3b4, wherein, step 3a1～3a6 is the process that user terminal obtains station symbol picture mid band title characteristic parameter, and step 3b1～3b4 is that user terminal obtains the process of downloading standard channel designation in the EPG programme information.Here, described user terminal is the multimedia terminal equipment of integrated EPG business; The server of storage station symbol database is referred to as the station symbol data server; Described station symbol picture is represented with the BMP form, can certainly be represented by other picture format; Extracting the channel designation characteristic parameter from the station symbol picture is to adopt existing image recognition algorithm, because algorithm is ripe canonical algorithm, so accuracy rate is quite high.In addition, can real-time update safeguard for the station symbol image data in the station symbol database.
Specifically, step 3a1～3a6 comprises: user terminal sends the station symbol image data request of downloading to the station symbol data server; The download request that station symbol data server response is received sends to user terminal with the sheet data of marking on a map of all standard units in the station symbol database; User terminal acceptance criteria station symbol image data also is stored in it in local one-dimensional data storehouse, generates local standard station symbol database; Afterwards, activate image recognition program, user terminal is marked on a map and is read the standard unit sheet of marking on a map the local standard station symbol database of sheet data from preserving standard unit in order, and the image recognition algorithm by standard extracts corresponding channel designation as characteristic parameter from standard unit is marked sheet on a map.
Step 3b1～3b4 comprises: user terminal sends to the EPG server and downloads the request of EPG programme information, and the EPG server responds this download request, and the EPG programme information that user terminal is required sends to user terminal; User terminal is stored in the local 2-D data storehouse after the EPG programme information of downloading is resolved, and generates local EPG program information database.
When users with channel is searched for, because all can there be the station symbol of this channel the fixed position of each television image, for example: in the upper left corner of video screen, so just can utilize existing algorithm for pattern recognition that the station symbol characteristics of image of fixed position is carried out the pattern recognition comparative analysis with the station symbol image data that is stored in this locality, with standard station symbol coupling and related be mapped of the station symbol image on the television image of current broadcast with corresponding channel, and then again by standard station symbol and channel designation, the related corresponding relation of EPG programme information, the EPG programme information of current playing frames channel and standard channel designation (important name) and this channel is associated, thereby realize televising the automatic name of channel and the automatic correspondence of EPG programme information.
Concrete handling process is as shown in Figure 4: current when having video flowing to play, regularly picture is intercepted and captured device and is intercepted and captured once current picture second every T, generally only intercepts and captures the station symbol image and fixedly gets final product the position at place, and begin the operation of searching television platform; Regularly picture is intercepted and captured device the picture of current intercepting and capturing is delivered to user terminal, and user terminal reads standard unit in the local station symbol database sheet data of marking on a map, carries out matching ratio with the picture of being intercepted and captured, and obtains matching probability; The matching probability of nearest M time of each current playing frames is smoothly analyzed, and the channel corresponding informance of output probability maximum is just determined the standard station symbol that the station symbol in the current picture meets most; Simultaneously, user terminal reads the incidence relation of station symbol and channel designation and EPG programme information, i.e. the resulting incidence relation of Fig. 3 flow process, so that current broadcasting channel is related corresponding with channel designation and EPG programme information.Process shown in Figure 4 is an analytic process, can be finished by special application program, and this application program can be described as picture and the corresponding program of channel designation.
In the described processing procedure of Fig. 4, T is the response time or claims recognition efficiency, is a natural number; M is used to embody accuracy of identification, because the value of M is big more, the number of the channel station symbol image of intercepting is many more, it is just many more to carry out matching ratio number of times, matching probability that can reference is just many more, so, and approaching more accurate probability just when smoothly analyzing, and then discrimination is just more accurate, and M is the integer greater than 0.The precision of identification is relevant with the efficient and the several factors of identification, such as: analyzing responding time, comparison algorithm of being adopted or the like.T*M has determined the response time of analytic process, and the size of M and the accuracy rate of analysis are proportional.If accuracy rate delimits greater than one, then M must be greater than certain threshold value.So, want to shorten the response time, just must reduce T, but the size of T depends on the disposal ability of CPU.So, select suitable pattern recognition comparison algorithm could guarantee that response time and recognition efficiency reach balance.Described pattern recognition comparison algorithm has multiple, such as: wavelet analysis algorithm, discrete cosine transform (DCT) algorithm, two-dimensional Fourier transform (DFT) algorithm or the like.
Matching ratio described in the processing procedure shown in Figure 4 can have a variety of methods, such as: the through image processing method, compare with the station symbol image in station symbol and the current picture, analyze the difference of content, by various characteristic synthetic result of determination, such as: the degree of agreement of all features just thinks that more than 98% the match is successful, and the station symbol in the current picture is exactly the standard station symbol that the match is successful.These features can be: the difference degree of station symbol non-transparent part and picture, degree of agreement of transparent part and picture or the like.This method speed is very fast, but relative accuracy is lower.For another example: adopt image model identification comparison algorithm, each standard station symbol is generated a binary classification device, mark on a map as carrying out pattern drill with several these standard units, mainly be according to the neural metwork training principle, use present image as input in use, judge whether station symbol into this channel by classifier result.This method precision height, but speed is relatively slow.
The present invention can be applied to the terminal equipment of the multiple EPG of being integrated with business, and for example: electrification of domestic PC (EPC, Entertainment PC), PVR, STB and multimedia handheld device (Handset) are as PDA, multimedia handset or the like.Specifically:
For electrification of domestic PC, on the basis of original multimedia software and hardware such as television video receiving card, configuration EPG information plug-in unit is selected suitable pattern recognition comparison algorithm, adopts the corresponding program of picture of the present invention and channel designation.Certainly, insert and employing Wireless (802.11/a/b/g) access way if not common Ethernet, also need dispose wireless network card, EPG information plug-in unit need be supported the transmission of wireless network card.Simultaneously, also to have independently the station symbol data server or with the server that standard station symbol database be provided of EPG server for same server, described station symbol database can dynamically update maintenance.
For PVR or STB set-top box, except needs setting and the similar multimedia software of EPC, outside configuration television video receiving card, the EPG information plug-in unit, also adopt the corresponding program of picture of the present invention and channel designation, to carry out the contrast identification of television image station symbol, because PVR series products major part all is to insert the family wireless media gateway by wireless mode, so the download of the download of described EPG programme information, station symbol database all will be transmitted by wireless network card.
For handheld device PDA for example, what its TV signal reception was commonplace all is to adopt Streaming Media to receive the mode of playing, to be that the mode of video flowing is sent to the PDA terminal equipment, therefore, wherein the EPG information plug-in unit of configuration is supported wireless network card to television media content via wireless network; Simultaneously, adopting the corresponding program of picture of the present invention and channel designation, the picture that needs to revise is is wherein intercepted and captured part, and the television video flow object that makes its intercepting and capturing is the Streaming Media that wireless mode inserts, rather than the common vision signal of utilizing television video receiving card to demodulate.
For multimedia handset, because can adopt microwave mobile communication agreements such as GSM/CDMA/UWB fully, its television video frequency signal also can adopt the mode of wireless video streaming, therefore, wherein the EPG information plug-in unit of configuration supports the radio frequency of microwave mobile communication agreement to receive (RF, Radio Frequency); Simultaneously, when adopting picture of the present invention and channel designation correspondence program, needing modification picture intercepting and capturing program to make the television video flow object of its intercepting and capturing is to utilize some Streaming Medias that transmit of microwave mobile communication, from TS stream, intercept and capture television image with support, rather than the common vision signal of utilizing television video receiving card to demodulate.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (9)
1. realize the method that channel is corresponding automatically based on electronic program guide (EPG) for one kind, be applicable to comprise user terminal and the standard station symbol can be provided and the system of the server of EPG programme information in, it is characterized in that this method may further comprise the steps:
A. user terminal obtains required standard station symbol and required EPG programme information respectively;
B. the standard channel designation that extracts in channel designation that the sheet extracting data of standard unit being marked on a map goes out and the EPG programme information mates, and obtains the related corresponding relation between standard station symbol and the standard channel designation;
C. user terminal reads the station symbol image of current broadcasting channel, station symbol image and the standard unit sheet data of marking on a map are mated, determine the pairing standard station symbol of current broadcasting channel, according to the resulting related corresponding relation of step b, determine the corresponding relation between the standard channel designation in current broadcasting channel and the EPG programme information then.
2. method according to claim 1 is characterized in that, step c is described to be read as: intercept and capture device is intercepted and captured once current picture second every T station symbol picture position by the timing picture.
3. method according to claim 1 and 2 is characterized in that, step c is described to be mated station symbol image and the standard unit sheet data of marking on a map to be specially: directly more current station symbol view data that reads and the standard unit sheet data of marking on a map.
4. method according to claim 1 and 2, it is characterized in that, step c is described to be mated station symbol image and the standard unit sheet data of marking on a map to be specially: mark standard unit on a map sheet data and the current station symbol image that reads as input parameter, discern by image model identification comparison algorithm.
5. method according to claim 4 is characterized in that, described pattern recognition comparison algorithm is wavelet analysis algorithm or discrete cosine transform DCT algorithm or two-dimensional Fourier transform DFT algorithm.
6. method according to claim 1 and 2, it is characterized in that, the described coupling of step c further comprises: the station symbol image that repeats to read M current picture, the sheet data of at every turn the station symbol view data that read and standard unit being marked on a map are mated, obtain matching probability, again M time matching probability is smoothly analyzed.
7. method according to claim 1 is characterized in that, described standard station symbol is stored in the station symbol data server, and described EPG programme information is stored in the EPG server.
8. method according to claim 7 is characterized in that, described station symbol data server and EPG server are same server.
9. method according to claim 7 is characterized in that, described station symbol data server is different servers with the EPG server.
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| CN108055590B (en) * | 2017-12-20 | 2021-06-04 | 聚好看科技股份有限公司 | Method for displaying graphic user interface of television picture screenshot |
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