CN104301785A - Program searching prompt method used for set top box and related device - Google Patents

Program searching prompt method used for set top box and related device Download PDF

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Publication number
CN104301785A
CN104301785A CN201410453576.3A CN201410453576A CN104301785A CN 104301785 A CN104301785 A CN 104301785A CN 201410453576 A CN201410453576 A CN 201410453576A CN 104301785 A CN104301785 A CN 104301785A
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China
Prior art keywords
frequency
current
nit
history
top box
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CN201410453576.3A
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Chinese (zh)
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CN104301785B (en
Inventor
耿宜国
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Shenzhen Skyworth Digital Technology Co Ltd
Shenzhen Skyworth Software Co Ltd
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Shenzhen Skyworth Digital Technology Co Ltd
Shenzhen Skyworth Software Co Ltd
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Priority to CN201410453576.3A priority Critical patent/CN104301785B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4424—Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
    • H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The embodiment of the invention discloses a program searching prompt method used for a set top box and a related device. The method comprises the steps that the set top box analyzes a network information table (NIT) to acquire a current NIT version number included by the NIT; the number of historical frequency points and a historical NIT version number which are pre-stored in a database; whether the current NIT version number and the historical NIT version number are coincident or not is detected; if the current NIT version number is not coincident with the historical NIT version number, the number of the current frequency points in the NIT is counted, and whether the number of the current frequency points is coincident with the number of the historical frequency points or not is further detected; if the number of the current frequency points is not coincident with the number of the historical frequency points, a prompt message is output and used for prompting a user to search for programs. By the adoption of the method, the user can be prompted to search for the programs by intelligently and efficiently monitoring the change of a front-end NIT, so that the responses of unnecessarily and frequently prompting the user to search for the programs are avoided.

Description

A kind of reminding method of Set Top Box searching programs and relevant device
Technical field
The present invention relates to digital television techniques field, particularly relate to a kind of reminding method and relevant device of Set Top Box searching programs.
Background technology
Along with the develop rapidly of digital television techniques, digital TV set-top box also enters huge numbers of families, and becomes the major way that people watch TV programme.In addition, becoming increasingly abundant of digital television function also impels constantly making new advances of set-top box functionality, and program searching is exactly one of Set Top Box basic function.NIT (Network Information Table, network information table) be that digital television system is for transmitting a form of the network information, comprising information such as version number, frequency point information, logical channel numbers and Service_ID, its main purposes is Set Top Box can carry out TV programme search when program changes.Current most of Set Top Box realizes program searching by front monitoring front-end NIT, and its principle is: when front end, NIT version changes, and Set Top Box will point out user to carry out searching programs.And the arbitrary information comprised in NIT changes, then NIT version can be caused to change thereupon, thus, as long as the information in NIT one changes, Set Top Box will be impelled to point out user to carry out program searching.At present, because program source is more and more abundanter, information in the NIT of front end may change frequently, so each change all can point out user search program by trigger unit top box, and the change of some information there is no need prompting user search program in NIT, such as when only having logical channel numbers to there occurs change in NIT, this set-top box there is no need prompting user search program, points out user search program can increase the live load of Set Top Box in addition frequently.
Summary of the invention
Embodiments provide a kind of reminding method and relevant device of Set Top Box searching programs, user search program can be pointed out by intelligence, the efficiently change of front monitoring front-end NIT, thus avoid the response of unnecessary prompting user search program.
Embodiment of the present invention first aspect provides a kind of reminding method of Set Top Box searching programs, comprising:
Set-top box parses network information table NIT, to obtain the current NIT version number that described NIT comprises;
Described Set Top Box obtains the history frequency number and history NIT version number that prestore in a database;
Whether described Set Top Box detects described current NIT version number consistent with described history NIT version number;
If described current NIT version number and described history NIT version number inconsistent, then described Set Top Box adds up the current frequency number in described NIT, and whether detect described current frequency number consistent with described history frequency number;
If described current frequency number and described history frequency number inconsistent, then described Set Top Box exports prompting message, and described prompting message is for pointing out user search program.
Embodiment of the present invention second aspect provides a kind of Set Top Box, comprising:
Resolution unit, for resolving network information table NIT, to obtain the current NIT version number that described NIT comprises;
Acquiring unit, for obtaining the history frequency number and history NIT version number that prestore in a database;
Detecting unit, whether consistent with described history NIT version number for detecting described current NIT version number;
Statistic unit, for detect when described detecting unit described current NIT version number and described history NIT version number inconsistent time, add up the current frequency number in described NIT;
Described detecting unit, also whether consistent with described history frequency number for detecting described current frequency number;
Output unit, for detect when described detecting unit described current frequency number and described history frequency number inconsistent time, export prompting message, described prompting message is for pointing out user search program.
In the embodiment of the present invention, first Set Top Box resolves network information table NIT, to obtain the current NIT version number that described NIT comprises, then the history frequency number prestored in a database and history NIT version number is obtained, then described current NIT version number is detected whether consistent with described history NIT version number, only have when above-mentioned Liang Ge NIT version number is inconsistent, Set Top Box just then adds up the current frequency number in described NIT, and whether detect described current frequency number further consistent with described history frequency number, only have when above-mentioned two frequency bins number is inconsistent, Set Top Box just can export prompting message to point out user search program.By implementing the embodiment of the present invention, during the NIT of monitoring STB front end, after detecting that the version of NIT changes, user is not pointed out to carry out program searching immediately, but whether the frequency number detected in NIT changes further, only have and just point out user search program when frequency number also changes, thus make Set Top Box can point out user search program by the change of intelligence, efficiently front monitoring front-end NIT, thus avoid some responses that are unnecessary, that point out user search program frequently.
In addition, by implementing the embodiment of the present invention, Set Top Box is no longer when detecting in NIT that arbitrary information changes the NIT version caused the just prompting user that changes and carries out program searching, when changing appears in NIT intermediate frequency other information less than change of counting, Set Top Box can on backstage the information of automatic more new change, thus program can not be watched to user and impact, further enhancing Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the reminding method of a kind of Set Top Box searching programs disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the reminding method of another kind of Set Top Box searching programs disclosed in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of Set Top Box disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of another kind of Set Top Box disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of reminding method and relevant device of Set Top Box searching programs, user search program can be pointed out by intelligence, the efficiently change of front monitoring front-end NIT, thus avoid the response of unnecessary prompting user search program.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of the reminding method of a kind of Set Top Box searching programs disclosed in the embodiment of the present invention.In the reminding method of the Set Top Box searching programs described by Fig. 1, in order to realize, Set Top Box is autotelic searches for TV programme, and the embodiment of the present invention is write-in program in Set Top Box, for monitoring the change in set-top box front-end NIT in real time.In order to implement the embodiment of the present invention, Set Top Box one end is connected with television set, and one end is connected with external information source device, can ensure like this to carry out Signal transmissions in the normal situation of power supply.In the embodiment of the present invention, Set Top Box will have the function of receiving digital television program, also can have shopping online, play games, e _-Government Service, security service, the multimedia function such as videozine subscription.Wherein, Set Top Box can be digital satellite set-top box (Digital Video Broadcasting-Satellite, DVB-S), can be Europe superscript digital ground Set Top Box (Digital Video Broadcasting-Terrestrial, DVB-T), international digital terrestrial set top box (Digital Terrestrial Multimedia Broadcast, DTMB), can also be cable television digital set-top box (Digital Video Broadcasting-Cable, DVB-C) etc., wherein each Set Top Box can be further subdivided into one-way set-top box again, bi-directional set-top box and high definition set top box, the type of the embodiment of the present invention to Set Top Box is not construed as limiting.
As shown in Figure 1, disclosed in the embodiment of the present invention, a kind of reminding method of Set Top Box searching programs can comprise the following steps:
S101, set-top box parses network information table NIT, to obtain the current NIT version number that described NIT comprises.
In the embodiment of the present invention, Set Top Box starts NIT monitoring program, then is resolved the content comprised in current NIT by this monitoring program, and to obtain NIT version number, the content in current NIT, except comprising NIT version number, also comprises frequency point information, logical channel numbers.
In the embodiment of the present invention, content in current NIT changes and can cause the change of NIT version, and the version number of such as current NIT is 10, and the logical channel numbers comprised as NIT there occurs change, then the version number of current NIT also changes thereupon, may to become 11.
S102, Set Top Box obtain the history frequency number and history NIT version number that prestore in a database.
In the embodiment of the present invention, content in the history NIT parsed time one parsing NIT before monitoring program (history NIT) is saved in database by Set Top Box, and the frequency points while frequency point information in parses through historical NIT in statistics frequency point information, and this frequency points is saved in database in the lump.Set Top Box obtains the history frequency number prestored in a database, the frequency points of adding up when being the frequency point information in parses through historical NIT; Set Top Box obtains the history NIT version number prestored in a database, the NIT version number obtained when being parses through historical NIT.
Whether S103, Set Top Box detect described current NIT version number consistent with described history NIT version number.
In the embodiment of the present invention, whether the history NIT version number that the current NIT version number that Set Top Box detection execution step S101 obtains and execution step S102 obtain is identical.
For example, when described current NIT version number is 10, described history NIT version number is also 10, then after Set Top Box performs this step, detects and show that Liang Ge version number is identical; When described current NIT version number is 11, described history NIT version number is also 10, then after Set Top Box performs this step, detects and show that Liang Ge version number is different, then continue to perform step S104.
If the described current NIT version number of S104 and described history NIT version number inconsistent, then described Set Top Box adds up the current frequency number in described NIT, and whether detect described current frequency number consistent with described history frequency number.
In the embodiment of the present invention, show that described current NIT version number is not identical with described history NIT version number when Set Top Box performs step S103, then Set Top Box starts to resolve the current frequency point information that current NIT comprises, described current frequency point information obtains when performing step S101, multiple current frequency is included again in this current frequency point information, Set Top Box often parses a current frequency, then counting once, when set-top box parses goes out current frequencies all in this current frequency point information, then stop counting, thus obtain the current frequency number in NIT.Whether Set Top Box further detects again described current frequency number equal with the history frequency number obtained when performing step S102.
For example, be 10 when once adding up the frequency points in the frequency point information that NIT comprises before Set Top Box, namely history frequency number is 10, this history frequency number is saved to database, the frequency points that Set Top Box is added up in the frequency point information that current NIT comprises is 10, namely current frequency number is 10, show that two numerical value are equal when detecting after this step of execution; Be 10 when once adding up the frequency points in the frequency point information that NIT comprises before Set Top Box, namely history frequency number is 10, this history frequency number is saved to database, the frequency points that Set Top Box is added up in the frequency point information that current NIT comprises is 12, namely current frequency number is 12, showing that two numerical value are unequal when detecting after this step of execution, namely having frequency to increase, then continuing to perform next step S105; Be 10 when once adding up the frequency points in the frequency point information that NIT comprises before Set Top Box, namely history frequency number is 10, this history frequency number is saved to database, the frequency points that Set Top Box is added up in the frequency point information that current NIT comprises is 8, namely current frequency number is 8, showing that two numerical value are unequal when detecting after this step of execution, namely having frequency to reduce, then continuing to perform next step S105.
Step S105, if described current frequency number and described history frequency number inconsistent, then described Set Top Box exports prompting message, and described prompting message is for pointing out user search program.
In the embodiment of the present invention, when Set Top Box perform step S104 draw described current frequency number and described history frequency number unequal, namely frequency is had to increase or have frequency to reduce, then described Set Top Box exports prompting message, and this prompting message is sent on the display screen of the television set be connected with this Set Top Box, so that user can recognize in time can carry out television program search.
By implementing the method described by Fig. 1, during the NIT of monitoring STB front end, after detecting that the version of NIT changes, user is not pointed out to carry out program searching immediately, but whether the frequency number detected in NIT changes further, only have and just point out user search program when frequency number also changes, thus make Set Top Box can selectively point out user search program by the change of intelligence, efficiently front monitoring front-end NIT, thus avoid some responses that are unnecessary, that point out user search program frequently.
In addition, by implementing the embodiment of the present invention, Set Top Box is no longer when detecting in NIT that arbitrary information changes the NIT version caused the just prompting user that changes and carries out program searching, when changing appears in NIT intermediate frequency other information less than change of counting, Set Top Box can on backstage the information of automatic more new change, thus program can not be watched to user and impact, further enhancing Consumer's Experience.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of the reminding method of another kind of Set Top Box searching programs disclosed in the embodiment of the present invention.As shown in Figure 2, the reminding method of this Set Top Box searching programs can comprise the following steps:
S201, set-top box parses network information table NIT, to obtain the current NIT version number that described NIT comprises.
In the embodiment of the present invention, not only contain the version number of self in NIT, further comprises frequency point information and logical channel numbers.
S202, Set Top Box obtain the history frequency number and history NIT version number that prestore in a database.
In the embodiment of the present invention, the individual numerical value of content (as history NIT version number, history frequency point information and historical logic channel) in history NIT and history NIT intermediate-frequeney point is not only stored in database, also stored for the frequency point information of some Set Top Box acquiescence, the frequency in the frequency point information of this acquiescence does not carry out statistic record in frequency number.
Whether S203, Set Top Box detect described current NIT version number consistent with described history NIT version number.
In the embodiment of the present invention, the history NIT version number that the current NIT version number that execution step S201 obtains by Set Top Box and execution step S202 obtain compares, if current NIT version number and old version are number identical, then Set Top Box will perform the history frequency number assignment that gets of step S202 to new variable, described new variable is for preserving the current frequency number in NIT, and the initial value of this variable is 0, and the value that this variable is composed is saved in database, the reason done like this is that the change of frequency number just can impel Set Top Box to carry out program searching to user's prompting, give this variable by the history frequency number assignment of acquisition and be saved to database, thus avoid because frequency points is different and cause prompting search, if it is not identical with history NIT version number that current NIT version number there occurs change, then then perform step S204.
If the described current NIT version number of S204 and described history NIT version number inconsistent, the current frequency in the current frequency point information that Set Top Box comprises described NIT is resolved, and described current frequency point information comprises multiple current frequency.
In the embodiment of the present invention, show that described current NIT version number is not identical with described history NIT version number when Set Top Box performs step S203, then Set Top Box resolves current frequency point information in NIT further, because contain again multiple current frequency in described current frequency point information, therefore namely the current frequency point information of set-top box parses is the current frequency of resolving one by one.
S205, Set Top Box whenever parsing a described current frequency from described current frequency point information, counting once, when described Set Top Box parses all described current frequencies from described current frequency point information, stop counting, to obtain the current frequency number in described NIT.
In the embodiment of the present invention, Set Top Box is while resolving the current frequency in current frequency point information, also in the number of the current frequency of statistics, namely Set Top Box often parses a current frequency, then counting once, when parsing all current frequencies, stopping counting, this set-top box is exactly the number of current NIT intermediate-frequeney point for the numerical value obtained in the module that counts, i.e. current frequency number.
In the embodiment of the present invention, Set Top Box is while statistics frequency points, also there is following operation: described Set Top Box whenever parsing a described current frequency from described current frequency point information, by described current frequency point setting flag bit, to obtain labeled current frequency, and the frequency attribute information corresponding to each history frequency carrying described flag bit frequency attribute information corresponding for described labeled current frequency and the history frequency point information prestored in the database comprised contrasts one by one, described frequency attribute information comprises frequency mark, symbol rate and modulation system.
For example, Set Top Box parses a current frequency at every turn from current frequency point information, then before current frequency, increase a flag bit, and this flag bit is all composed into identical value, assignment both can be numerical value (as: 0 or 1 etc.), also can be character (as: L or F etc.), can also be that other can play the symbol (as: $ or * etc.) of mark effect, the embodiment of the present invention be not construed as limiting.Frequency attribute information corresponding for the current frequency with flag bit obtained (namely labeled current frequency) (is comprised frequency mark by Set Top Box, symbol rate and modulation system) contrast one by one with the frequency attribute information corresponding to history frequency in database, here the frequency in the history frequency point information that history frequency obtains when being set-top box parses history NIT, equally also carry flag bit, when history frequency point information is saved in database by Set Top Box, also be first by history frequency point setting flag bit, this flag bit gives identical value with the flag bit of current frequency, and then be saved in database.
In the embodiment of the present invention, Set Top Box is in the current frequency points of statistics, by while in the frequency attribute information of each the current frequency parsed and database, the frequency attribute information of history frequency compares, and Set Top Box is also in each current logic channel carrying different service identifiers Service_ID that parsing NIT comprises.
As the optional execution mode of one, when described Set Top Box contrast frequency attribute information corresponding to frequency attribute information corresponding to described labeled current frequency and described each history frequency carrying described flag bit all inconsistent time, then corresponding according to described labeled current frequency frequency attribute information upgrades the described history frequency point information in described database, to obtain the history frequency point information after renewal.In addition, Set Top Box can stop the current logic channel carrying Service_ID that parsing NIT comprises immediately.
For example, when set-top box parses goes out a current frequency, and set flag bit, the frequency attribute information that described labeled current frequency is corresponding is: frequency is designated 307, symbol rate is 6900, modulation system QAM64, the frequency attribute information of the history frequency in this frequency attribute information and database is contrasted one by one, first search and whether have identical frequency mark, when the frequency attribute information finding a history frequency is: frequency is designated 307, symbol rate is 6875, modulation system QAM64, then illustrate that the frequency attribute information of this labeled current frequency there occurs change compared with the frequency attribute information of this history frequency, now, Set Top Box can upgrade the frequency attribute information of this history frequency according to the frequency attribute information of this labeled current frequency, both the symbol rate of history frequency was changed into 6900 by 6875.According to aforesaid operations, each the current frequency parsed and history frequency are contrasted, thus the history frequency point information after renewal can be obtained.It is to be noted that: the frequency attribute information (the history frequency point information namely in history NIT) of the history frequency preserved in the frequency attribute information of current frequency and database only contrasts by Set Top Box, and not with database in original gave tacit consent to and the acquiescence frequency point information that flag bit is not set contrast.
Again for example, when set-top box parses goes out a current frequency, and set flag bit, the frequency attribute information that described labeled current frequency is corresponding is: frequency is designated 307, symbol rate is 6900, modulation system QAM64, the frequency attribute information of the history frequency in this frequency attribute information and database is contrasted one by one, first search and whether have identical frequency mark, when not having frequency to be designated the frequency of 307 in discovery history frequency after contrasting one by one, then illustrate that now new frequency has appearred in current frequency point information compared with history frequency point information, namely frequency is had to increase, then by frequency attribute information corresponding for this current frequency, " frequency is designated 307, symbol rate is 6900, modulation system QAM64 " be saved in database history frequency point information, to obtain the history frequency point information after upgrading.It is to be noted that: the frequency attribute information (the history frequency point information namely in history NIT) of the history frequency preserved in the frequency attribute information of current frequency and database only contrasts by Set Top Box, and not with database in original gave tacit consent to and the acquiescence frequency point information that flag bit is not set contrast.
As the optional execution mode of one, when described Set Top Box contrast frequency attribute information corresponding to current frequency labeled described in each exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, resolve each current logic channel carrying different Service_ID that described NIT comprises.
In the embodiment of the present invention, when the frequency attribute information that set-top box parses each labeled current frequency is out corresponding exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, mean that current frequency point information is compared with history frequency point information, both do not had frequency to increase or reduced, also do not have the change of frequency attribute information, then Set Top Box can continue each current logic channel carrying different Service_ID that parsing NIT comprises.
In the embodiment of the present invention, described Set Top Box, whenever parsing one and carrying the described current logic channel of Service_ID, contrasts described current logic channel whether consistent with the historical logic channel carrying described Service_ID prestored in the database; If not, then described Set Top Box utilizes described current logic channel to upgrade the historical logic channel carrying described Service_ID in described database.
For example, when set-top box parses goes out a current logic channel, this current logical channel numbers is 10, and the Service_ID of correspondence is 156, when current logic channel and historical logic channel are contrasted, first from historical logic channel, find the historical logic channel that Service_ID is 156, contrast historical logic channel more whether identical with current logic channel, if historical logic channel is also 10, then both are identical, then Set Top Box continues to resolve next current logic channel; If historical logic channel is not 10, be assumed to be 12, the current logic channel then with identical Service_ID is different from historical logic channel, then current logic channel 10 is replaced historical logic channel 12 by Set Top Box, Set Top Box continues to resolve next current logic channel, when having resolved all logical channel numbers, then now obtain the logical channel numbers carrying Service_ID after upgrading in database.
Whether S206, Set Top Box detect described current frequency number consistent with described history frequency number.
In the embodiment of the present invention, the history frequency number that the current frequency number that execution step S205 obtains by Set Top Box and execution step S202 obtain compares, and whether equally compares two numerical value.
As the optional execution mode of one, in step S205, Set Top Box contrasts on the frequency attribute information of the current frequency basis not identical with the frequency attribute information of history frequency while adding up current frequency points, when described Set Top Box detects that described current frequency number is consistent with described history frequency number, described history frequency number is saved in described database again, and utilizes described current NIT version number to upgrade described history NIT version number in described database; Mentioned here described history frequency number is saved in described database again, refer to Set Top Box when performing step S202 by the history frequency number assignment of acquisition to the variable being used for preserving current frequency number in NIT, and then the value in this variable to be saved in database.Utilizing the described history NIT version number upgraded in described database of described current NIT version number to refer to is saved in database by current NIT version number, to substitute, to override history NIT version number.
And each current logic channel of what described Set Top Box utilized described NIT to comprise carry Service_ID upgrades the historical logic channel prestored in the database.
In the embodiment of the present invention, Set Top Box is in the current frequency points of statistics, by while in the frequency attribute information of each the current frequency parsed and database, the frequency attribute information of history frequency compares, Set Top Box is also in each current logic channel carrying Service_ID that parsing NIT comprises, as long as the frequency attribute information contrasting a current frequency when Set Top Box is all not identical with the frequency attribute information of history frequency, then can stop the parsing to current logic channel at once.When having resolved all current frequencies, and current frequency number is consistent with history frequency number, and namely Set Top Box can not point out user search, then Set Top Box upgrades current logic channel automatically on backstage.
If the described current frequency number of S207 and described history frequency number inconsistent, then described Set Top Box exports prompting message, and described prompting message is for pointing out user search program.
In the embodiment of the present invention, described Set Top Box also comprises after exporting prompting message:
Described Set Top Box receives the search instruction of the described prompting message input of response, and according to described search instruction searching programs;
Described Set Top Box utilizes described current frequency number to upgrade described history frequency number in described database, and utilizes described current NIT version number to upgrade described history NIT version number in described database;
The current frequency point information that described Set Top Box utilization comprises described labeled current frequency upgrades the history frequency point information after the described renewal in described database;
And each current logic channel of what described Set Top Box utilized described NIT to comprise carry service identifiers Service_ID upgrades the historical logic channel prestored in the database.
In the embodiment of the present invention, after user carries out program searching according to prompting message, the history NIT version number preserved in database, history frequency number, history frequency point information and historical logic channel all can upgrade again automatically, are updated to current NIT version number, current frequency number, current frequency point information and current logic channel.
By implementing the method described by Fig. 2, during the NIT of monitoring STB front end, first detecting NIT version number has unchanged, detect again frequency points in NIT further with or without increase and decrease, only have when NIT version number change and frequency points in NIT have increase or reduce time, Set Top Box just points out user to carry out television program search, thus make Set Top Box can selectively point out user search program by the change of intelligence, efficiently front monitoring front-end NIT, thus avoid some responses that are unnecessary, that point out user search program frequently.
In addition, by implementing the embodiment of the present invention, Set Top Box is no longer when detecting in NIT that arbitrary information changes the NIT version caused the just prompting user that changes and carries out program searching, when changing appears in NIT intermediate frequency other information less than change of counting, Set Top Box does not point out user to search for, but on backstage the information of automatic more new change, as NIT version number, frequency point information and logical channel numbers, thus program can not be watched to user and impact, further enhancing Consumer's Experience.
Be apparatus of the present invention embodiment below, the method that apparatus of the present invention embodiment realizes for performing the inventive method embodiment one to two, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, concrete ins and outs do not disclose, and please refer to the embodiment of the present invention one and embodiment two.
Refer to Fig. 3, Fig. 3 is the structural representation of a kind of Set Top Box disclosed in the embodiment of the present invention.Set Top Box shown in Fig. 3, for performing the reminding method of Set Top Box searching programs disclosed in the embodiment of the present invention.In order to implement the embodiment of the present invention, the Set Top Box shown in Fig. 3 will have the function of receiving digital television program, and one end of Set Top Box is connected with television set, and one end is connected with external information source device, can ensure like this to carry out Signal transmissions in the normal situation of power supply.As shown in Figure 3, disclosed in the embodiment of the present invention, a kind of Set Top Box comprises:
Resolution unit 301, for resolving network information table NIT, to obtain the current NIT version number that described NIT comprises.
In the embodiment of the present invention, this unit 301 starts NIT monitoring program, then is resolved the content comprised in current NIT by this monitoring program, to obtain NIT version number, content in current NIT, except comprising NIT version number, also comprises frequency point information, logical channel numbers.
In the embodiment of the present invention, content in current NIT changes and can cause the change of NIT version, and the version number of such as current NIT is 10, and the logical channel numbers comprised as NIT there occurs change, then the version number of current NIT also changes thereupon, may to become 11.
Acquiring unit 302, for obtaining the history frequency number and history NIT version number that prestore in a database.
In the embodiment of the present invention, content in the history NIT that what this unit 302 got parse when being one parsing NIT (history NIT) before the above-mentioned resolution unit 301 of preserving in database, adds up the frequency points in frequency point information while the frequency point information in parses through historical NIT.This unit 302 obtains the history frequency number prestored in a database, the frequency points of adding up when being the frequency point information in parses through historical NIT; This unit obtains the history NIT version number prestored in a database, the NIT version number obtained when being parses through historical NIT.
Detecting unit 303, whether consistent with described history NIT version number for detecting described current NIT version number.
Wherein, whether this unit 303 to detect the history NIT version number that current NIT version number that above-mentioned resolution unit 301 obtains and above-mentioned acquiring unit 302 obtain identical.
For example, when described current NIT version number is 10, described history NIT version number is also 10, then this unit 303 detects and show that Liang Ge version number is identical; When described current NIT version number is 11, described history NIT version number is also 10, then this unit 303 detects and show that Liang Ge version number is different.
Statistic unit 304, for detect when above-mentioned detecting unit 303 described current NIT version number and described history NIT version number inconsistent time, add up the current frequency number in described NIT.
In the embodiment of the present invention, show that described current NIT version number is not identical with described history NIT version number when above-mentioned detecting unit 303 detects, then this unit 304 obtains the current frequency point information that the current NIT that parses comprises from above-mentioned resolution unit 301, and start to resolve current frequency point information, the current frequency point information that described current NIT comprises is that above-mentioned resolution unit 301 obtains when resolving current NIT, multiple current frequency is included again in this current frequency point information, this unit 304 often parses a current frequency, then count once, when this unit 304 parses current frequencies all in this current frequency point information, then stop counting, thus the current frequency number obtained in NIT.
Above-mentioned detecting unit 303, also whether consistent with described history frequency number for detecting described current frequency number.
Wherein, described current frequency number is that above-mentioned statistic unit 304 statistics draws, described history frequency number is that above-mentioned acquiring unit 302 gets from database.
For example, be 10 when above-mentioned acquiring unit 302 gets history frequency number from database, described history frequency number obtains when being and once adding up the frequency points in frequency point information that NIT (history NIT) comprises before above-mentioned statistic unit 304, the frequency points that above-mentioned statistic unit 304 is added up in the frequency point information that current NIT comprises is 10, namely current frequency number is 10, by detecting, above-mentioned detecting unit 303 show that two numerical value are equal; Be 10 when above-mentioned acquiring unit 302 gets history frequency number from database, the frequency points that above-mentioned statistic unit 304 is added up in the frequency point information that current NIT comprises is 12, namely current frequency number is 12, by detection, above-mentioned detecting unit 303 show that two numerical value are unequal, namely have frequency to increase; Be 10 when above-mentioned acquiring unit 302 gets history frequency number from database, the frequency points that above-mentioned statistic unit 304 is added up in the frequency point information that current NIT comprises is 8, namely current frequency number is 8, by detection, above-mentioned detecting unit 303 show that two numerical value are unequal, namely have frequency to reduce.
Output unit 305, for detect when above-mentioned detecting unit 303 described current frequency number and described history frequency number inconsistent time, export prompting message, described prompting message is for pointing out user search program.
Wherein, the real-time front monitoring front-end NIT of Set Top Box shown in Fig. 3, after detecting that the version of NIT changes, user is not pointed out to carry out program searching immediately, but whether the frequency number detected in NIT changes further, only have and just point out user search program when frequency number also changes, thus make Set Top Box can selectively point out user search program by the change of intelligence, efficiently front monitoring front-end NIT, thus avoid some responses that are unnecessary, that point out user search program frequently.
Further, Set Top Box shown in Fig. 3 is no longer when detecting in NIT that arbitrary information changes the NIT version caused the just prompting user that changes and carries out program searching, when changing appears in NIT intermediate frequency other information less than change of counting, Set Top Box can on backstage the information of automatic more new change, thus program can not be watched to user and impact, further enhancing Consumer's Experience.
Refer to Fig. 4, Fig. 4 is the structural representation of another kind of Set Top Box disclosed in the embodiment of the present invention, for realizing the reminding method of Set Top Box searching programs disclosed in the embodiment of the present invention.As shown in Figure 4, disclosed in the embodiment of the present invention, a kind of Set Top Box comprises:
Resolution unit 301, for resolving network information table NIT, to obtain the current NIT version number that described NIT comprises.
Wherein, not only contain the version number of self in NIT, further comprises frequency point information and logical channel numbers.
Acquiring unit 302, for obtaining the history frequency number and history NIT version number that prestore in a database.
In the embodiment of the present invention, the individual numerical value of content (as history NIT version number, history frequency point information and historical logic channel) in history NIT and history NIT intermediate-frequeney point is not only stored in database, also stored for the frequency point information of some Set Top Box acquiescence, the frequency in the frequency point information of this acquiescence does not carry out statistic record in frequency number.
Detecting unit 303, whether consistent with described history NIT version number for detecting described current NIT version number.
In the embodiment of the present invention, the current NIT version number that above-mentioned resolution unit 301 parses by this unit 303 and the history NIT version number that above-mentioned acquiring unit 302 gets compare, if current NIT version number and old version are number identical, then the history frequency number assignment that gets is given new variable by above-mentioned acquiring unit 302, described new variable is for preserving the current frequency number in NIT, and the initial value of this variable is 0, and the value that this variable is composed is saved in database, the reason done like this is that the change of frequency number just can impel Set Top Box to carry out program searching to user's prompting, give this variable by the history frequency number assignment of acquisition and be saved to database, thus avoid because frequency points is different and cause prompting search.
Statistic unit 304, for detect when above-mentioned detecting unit 303 described current NIT version number and described history NIT version number inconsistent time, add up the current frequency number in described NIT.Wherein, this unit 304 can comprise parsing module 306 and counting module 307.
Parsing module 306, for detect when above-mentioned detecting unit 303 described current NIT version number and described history NIT version number inconsistent time, current frequency in the current frequency point information comprise described NIT is resolved, and described current frequency point information comprises multiple current frequency.
Wherein, this module 306, when resolving the current frequency in current frequency point information, is also resolving each current logic channel carrying different service identifiers Service_ID comprised in NIT simultaneously.
Counting module 307, for above-mentioned parsing module 306 whenever parse a described current frequency from described current frequency point information, counting once, when above-mentioned parsing module 306 parses all described current frequencies from described current frequency point information, stop counting, to obtain the current frequency number in described NIT.
Contrast unit 308, for above-mentioned parsing module 306 whenever parse a described current frequency from described current frequency point information, by described current frequency point setting flag bit, to obtain labeled current frequency, and the frequency attribute information corresponding to each history frequency carrying described flag bit frequency attribute information corresponding for described labeled current frequency and the history frequency point information prestored in the database comprised contrasts one by one, described frequency attribute information comprises frequency mark, symbol rate and modulation system.
For example, above-mentioned parsing module 306 parses a current frequency at every turn from current frequency point information, then before current frequency, increase a flag bit, and this flag bit is all composed into identical value, assignment both can be numerical value (as: 0 or 1 etc.), also can be character (as: L or F etc.), can also be that other can play the symbol (as: $ or * etc.) of mark effect, the embodiment of the present invention be not construed as limiting.Frequency attribute information (comprising frequency mark, symbol rate and modulation system) corresponding for the current frequency with flag bit obtained (namely labeled current frequency) contrasts with the frequency attribute information corresponding to the history frequency in database by this unit 308 one by one, here history frequency is the frequency in the history frequency point information in history NIT, equally also carry flag bit, this flag bit gives identical value with the flag bit of current frequency.
Updating block 309, for contrast when above-mentioned contrast unit 308 frequency attribute information corresponding to frequency attribute information corresponding to described labeled current frequency and described each history frequency carrying described flag bit all inconsistent time, then corresponding according to described labeled current frequency frequency attribute information upgrades the described history frequency point information in described database, to obtain the history frequency point information after renewal.
Wherein, when above-mentioned contrast unit 308 contrast frequency attribute information corresponding to frequency attribute information corresponding to described labeled current frequency and described each history frequency carrying described flag bit all inconsistent time, this unit 309 is while more new historical frequency point information, and above-mentioned parsing module 306 can stop resolving the current logic channel carrying Service_ID that NIT comprises immediately.
For example, when above-mentioned parsing module 306 parses a current frequency, and set flag bit, the frequency attribute information that described labeled current frequency is corresponding is: frequency is designated 307, symbol rate is 6900, modulation system QAM64, the frequency attribute information of the history frequency in this frequency attribute information and database contrasts by above-mentioned contrast unit 308 one by one, first search and whether have identical frequency mark, when the frequency attribute information finding a history frequency is: frequency is designated 307, symbol rate is 6875, modulation system QAM64, then illustrate that the frequency attribute information of this labeled current frequency there occurs change compared with the frequency attribute information of this history frequency, now, this unit 309 can upgrade the frequency attribute information of this history frequency according to the frequency attribute information of this labeled current frequency, both the symbol rate of history frequency was changed into 6900 by 6875.According to aforesaid operations, each the current frequency parsed and history frequency are contrasted, thus the history frequency point information after renewal can be obtained.It is to be noted that: the frequency attribute information (the history frequency point information namely in history NIT) of the history frequency preserved in the frequency attribute information of current frequency and database only contrasts by above-mentioned contrast unit 308, and not with database in originally gave tacit consent to and the acquiescence frequency point information that flag bit is not set contrast.
Again for example, when above-mentioned parsing module 306 parses a current frequency, and set flag bit, the frequency attribute information that described labeled current frequency is corresponding is: frequency is designated 307, symbol rate is 6900, modulation system QAM64, the frequency attribute information of the history frequency in this frequency attribute information and database contrasts by above-mentioned contrast unit 308 one by one, first search and whether have identical frequency mark, when not having frequency to be designated the frequency of 307 in discovery history frequency after contrasting one by one, then illustrate that now new frequency has appearred in current frequency point information compared with history frequency point information, namely frequency is had to increase, then by frequency attribute information corresponding for this current frequency, " frequency is designated 307 to this unit 309, symbol rate is 6900, modulation system QAM64 " be saved in database history frequency point information, to obtain the history frequency point information after upgrading.It is to be noted that: the frequency attribute information (the history frequency point information namely in history NIT) of the history frequency preserved in the frequency attribute information of current frequency and database only contrasts by above-mentioned contrast unit 308, and not with database in originally gave tacit consent to and the acquiescence frequency point information that flag bit is not set contrast.
Above-mentioned detecting unit 303, also whether consistent with described history frequency number for detecting described current frequency number;
Output unit 305, for detect when above-mentioned detecting unit 303 described current frequency number and described history frequency number inconsistent time, export prompting message, described prompting message is for pointing out user search program.
Receiving element 310, for receiving the search instruction of the described prompting message input of response.
Search unit 311, for the described search instruction searching programs received according to above-mentioned receiving element 310.
Above-mentioned updating block 309, also for after above-mentioned search unit 311 has searched for program, described current frequency number is utilized to upgrade history frequency number in described database, described current NIT version number is utilized to upgrade described history NIT version number in described database, history frequency point information after the described renewal utilizing the current frequency point information comprising described labeled current frequency to upgrade in described database, and each current logic channel carrying service identifiers Service_ID utilizing described NIT to comprise upgrades the historical logic channel prestored in the database.
In an embodiment, above-mentioned updating block 309, time also for detecting that described current frequency number is consistent with described history frequency number when above-mentioned detecting unit 303, described history frequency number is saved in described database again, utilize described current NIT version number to upgrade described history NIT version number in described database, and each current logic channel carrying Service_ID utilizing described NIT to comprise upgrade the historical logic channel prestored in the database.
In an embodiment, above-mentioned parsing module 306, also for contrast when above-mentioned contrast unit 308 the frequency attribute information that current frequency labeled described in each is corresponding exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, resolve each current logic channel carrying Service_ID that described NIT comprises.
In the embodiment of the present invention, when the frequency attribute information that each labeled current frequency that above-mentioned parsing module 306 parses is corresponding exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, mean that current frequency point information is compared with history frequency point information, both do not had frequency to increase or reduced, also do not have the change of frequency attribute information, then above-mentioned parsing module 306 can continue each current logic channel carrying different Service_ID that parsing NIT comprises.
Above-mentioned contrast unit 308, also for above-mentioned parsing module 306 whenever parsing one and carrying the described current logic channel of Service_ID, contrast described current logic channel whether consistent with the historical logic channel carrying described Service_ID prestored in the database;
Above-mentioned updating block 309, also for contrast described current logic channel when above-mentioned contrast unit 308 and prestore the historical logic channel carrying described Service_ID in the database inconsistent time, utilize described current logic channel to upgrade the historical logic channel carrying described Service_ID in described database.
For example, when above-mentioned parsing module 306 parses a current logic channel, suppose that this current logical channel numbers is 10, and the Service_ID of correspondence is 156, when current logic channel and historical logic channel contrast by above-mentioned contrast unit 308, first from historical logic channel, find the historical logic channel that Service_ID is 156, contrast historical logic channel more whether identical with current logic channel, if historical logic channel is also 10, then both are identical, then above-mentioned parsing module 306 continues to resolve next current logic channel, if historical logic channel is not 10, be assumed to be 12, the current logic channel then with identical Service_ID is different from historical logic channel, then current logic channel 10 is replaced historical logic channel 12 by above-mentioned updating block 309, above-mentioned parsing module 306 continues to resolve next current logic channel, when having resolved all logical channel numbers, then now obtain the logical channel numbers carrying Service_ID after upgrading in database.
Wherein, during the real-time front monitoring front-end NIT of the Set Top Box shown in Fig. 4, first detecting NIT version number has unchanged, detect again frequency points in NIT further with or without increase and decrease, only have when NIT version number change and frequency points in NIT have increase or reduce time, Set Top Box just points out user to carry out television program search, thus make Set Top Box can selectively point out user search program by the change of intelligence, efficiently front monitoring front-end NIT, thus avoid some responses that are unnecessary, that point out user search program frequently.
In addition, Set Top Box shown in Fig. 4 is no longer when detecting in NIT that arbitrary information changes the NIT version caused the just prompting user that changes and carries out program searching, when changing appears in NIT intermediate frequency other information less than change of counting, Set Top Box does not point out user to search for, but on backstage the information of automatic more new change, as NIT version number, frequency point information and logical channel numbers, thus program can not be watched to user and impact, further enhancing Consumer's Experience.
One of ordinary skill in the art will appreciate that all or part of flow process realized in each method of above-described embodiment, that the hardware that can carry out instruction relevant by computer program has come, this program can be stored in a computer read/write memory medium, this storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, or random access memory (Random Access Memory, be called for short RAM) etc. ROM).
Above the reminding method of Set Top Box searching programs disclosed in the embodiment of the present invention and relevant device are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (12)

1. a reminding method for Set Top Box searching programs, is characterized in that, comprising:
Set-top box parses network information table NIT, to obtain the current NIT version number that described NIT comprises;
Described Set Top Box obtains the history frequency number and history NIT version number that prestore in a database;
Whether described Set Top Box detects described current NIT version number consistent with described history NIT version number;
If described current NIT version number and described history NIT version number inconsistent, then described Set Top Box adds up the current frequency number in described NIT, and whether detect described current frequency number consistent with described history frequency number;
If described current frequency number and described history frequency number inconsistent, then described Set Top Box exports prompting message, and described prompting message is for pointing out user search program.
2. method according to claim 1, is characterized in that, described Set Top Box adds up the current frequency number in described NIT, comprising:
Current frequency in the current frequency point information that described Set Top Box comprises described NIT is resolved, and described current frequency point information comprises multiple current frequency;
Described Set Top Box whenever parsing a described current frequency from described current frequency point information, counting once, when described Set Top Box parses all described current frequencies from described current frequency point information, stop counting, to obtain the current frequency number in described NIT.
3. method according to claim 2, is characterized in that, described method also comprises:
Described Set Top Box whenever parsing a described current frequency from described current frequency point information, by described current frequency point setting flag bit, to obtain labeled current frequency, and the frequency attribute information corresponding to each history frequency carrying described flag bit frequency attribute information corresponding for described labeled current frequency and the history frequency point information prestored in the database comprised contrasts one by one, described frequency attribute information comprises frequency mark, symbol rate and modulation system;
When described Set Top Box contrast frequency attribute information corresponding to frequency attribute information corresponding to described labeled current frequency and described each history frequency carrying described flag bit all inconsistent time, then corresponding according to described labeled current frequency frequency attribute information upgrades the described history frequency point information in described database, to obtain the history frequency point information after renewal.
4. method according to claim 3, is characterized in that, described method also comprises:
Described Set Top Box receives the search instruction of the described prompting message input of response, and according to described search instruction searching programs;
Described Set Top Box utilizes described current frequency number to upgrade described history frequency number in described database, and utilizes described current NIT version number to upgrade described history NIT version number in described database;
The current frequency point information that described Set Top Box utilization comprises described labeled current frequency upgrades the history frequency point information after the described renewal in described database;
And each current logic channel of what described Set Top Box utilized described NIT to comprise carry service identifiers Service_ID upgrades the historical logic channel prestored in the database.
5. method according to claim 3, is characterized in that, described method also comprises:
When described Set Top Box detects that described current frequency number is consistent with described history frequency number, described history frequency number is saved in described database again, and utilizes described current NIT version number to upgrade described history NIT version number in described database;
Each current logic channel of what described Set Top Box utilized described NIT to comprise carry Service_ID upgrades the historical logic channel prestored in the database.
6. method according to claim 3, is characterized in that, described method also comprises:
When described Set Top Box contrast frequency attribute information corresponding to current frequency labeled described in each exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, resolve each current logic channel carrying Service_ID that described NIT comprises;
Described Set Top Box, whenever parsing one and carrying the described current logic channel of Service_ID, contrasts described current logic channel whether consistent with the historical logic channel carrying described Service_ID prestored in the database;
If not, then described Set Top Box utilizes described current logic channel to upgrade the historical logic channel carrying described Service_ID in described database.
7. a Set Top Box, is characterized in that, comprising:
Resolution unit, for resolving network information table NIT, to obtain the current NIT version number that described NIT comprises;
Acquiring unit, for obtaining the history frequency number and history NIT version number that prestore in a database;
Detecting unit, whether consistent with described history NIT version number for detecting described current NIT version number;
Statistic unit, for detect when described detecting unit described current NIT version number and described history NIT version number inconsistent time, add up the current frequency number in described NIT;
Described detecting unit, also whether consistent with described history frequency number for detecting described current frequency number;
Output unit, for detect when described detecting unit described current frequency number and described history frequency number inconsistent time, export prompting message, described prompting message is for pointing out user search program.
8. Set Top Box according to claim 7, is characterized in that, described statistic unit comprises:
Parsing module, for detect when described detecting unit described current NIT version number and described history NIT version number inconsistent time, current frequency in the current frequency point information comprise described NIT is resolved, and described current frequency point information comprises multiple current frequency;
Counting module, for described parsing module whenever parse a described current frequency from described current frequency point information, counting once, when described parsing module parses all described current frequencies from described current frequency point information, stop counting, to obtain the current frequency number in described NIT.
9. Set Top Box according to claim 8, is characterized in that, described Set Top Box also comprises:
Contrast unit, for described parsing module whenever parse a described current frequency from described current frequency point information, by described current frequency point setting flag bit, to obtain labeled current frequency, and the frequency attribute information corresponding to each history frequency carrying described flag bit frequency attribute information corresponding for described labeled current frequency and the history frequency point information prestored in the database comprised contrasts one by one, described frequency attribute information comprises frequency mark, symbol rate and modulation system;
Updating block, for contrast when described contrast unit frequency attribute information corresponding to frequency attribute information corresponding to described labeled current frequency and described each history frequency carrying described flag bit all inconsistent time, then corresponding according to described labeled current frequency frequency attribute information upgrades the described history frequency point information in described database, to obtain the history frequency point information after renewal.
10. Set Top Box according to claim 9, is characterized in that, described Set Top Box also comprises:
Receiving element, for receiving the search instruction of the described prompting message input of response;
Search unit, for the described search instruction searching programs received according to described receiving element;
Described updating block, also for utilizing described current frequency number to upgrade history frequency number in described database, and utilizes described current NIT version number to upgrade described history NIT version number in described database;
Described updating block, also for utilize the current frequency point information comprising described labeled current frequency to upgrade in described database described renewal after history frequency point information;
Described updating block, each current logic channel carrying service identifiers Service_ID also for utilizing described NIT to comprise upgrades the historical logic channel prestored in the database.
11. Set Top Box according to claim 9, is characterized in that,
Described updating block, time also for detecting that when described detecting unit described current frequency number is consistent with described history frequency number, described history frequency number is saved in described database again, and utilizes described current NIT version number to upgrade described history NIT version number in described database;
Described updating block, each current logic channel carrying Service_ID also for utilizing described NIT to comprise upgrades the historical logic channel prestored in the database.
12. Set Top Box according to claim 9, is characterized in that,
Described parsing module, also for contrast when described contrast unit frequency attribute information corresponding to current frequency labeled described in each exist in the database frequency attribute information corresponding to a described history frequency completely the same with it time, resolve each current logic channel carrying Service_ID that described NIT comprises;
Described contrast unit, also for described parsing module whenever parsing one and carrying the described current logic channel of Service_ID, contrast described current logic channel whether consistent with the historical logic channel carrying described Service_ID prestored in the database;
Described updating block, also for contrast when described contrast unit described current logic channel with prestore the historical logic channel carrying described Service_ID in the database inconsistent time, utilize described current logic channel to upgrade the historical logic channel carrying described Service_ID in described database.
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CN102790912A (en) * 2012-08-17 2012-11-21 广东省广播电视网络股份有限公司 Channel information and menu information updating method of set-top box

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CN104822081A (en) * 2015-05-13 2015-08-05 四川金网通电子科技有限公司 Method for updating NIT version number of digital television system front-end frequency point
CN105657415A (en) * 2016-01-18 2016-06-08 深圳创维数字技术有限公司 Method for automatically detecting set top box and terminal
CN105959779A (en) * 2016-06-16 2016-09-21 珠海迈科智能科技股份有限公司 Method and device for updating satellite frequency points in set top box
CN109275041A (en) * 2018-11-09 2019-01-25 四川长虹电器股份有限公司 A kind of method of automatic acquisition digital program information
CN109275041B (en) * 2018-11-09 2020-10-23 四川长虹电器股份有限公司 Method for automatically acquiring digital program information

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