CN111935515A - Method, device, equipment and medium for generating electronic program guide data table - Google Patents
Method, device, equipment and medium for generating electronic program guide data table Download PDFInfo
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- CN111935515A CN111935515A CN202010818500.1A CN202010818500A CN111935515A CN 111935515 A CN111935515 A CN 111935515A CN 202010818500 A CN202010818500 A CN 202010818500A CN 111935515 A CN111935515 A CN 111935515A
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- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
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- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
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- 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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
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- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
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- 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
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a method, a device, equipment and a medium for generating an electronic program guide data table. Relates to the digital television technology. The method for generating the electronic program guide data sheet comprises the following steps: after receiving a generation request of a data table, extracting table index information included in the generation request; searching a preset data table cache, and determining whether table index information exists in the data table cache; and generating an electronic program guide data table corresponding to the generation request according to the searching judgment result. According to the method and the device, the uniqueness judgment is carried out on the data table to be generated through the generation request, the generation of the same data table can be reduced, the generation quantity of the data table is reduced, the generation speed of the data table is further improved, and the problem that the time consumption for generating the data table is long is solved.
Description
Technical Field
The embodiment of the invention relates to the digital television technology, in particular to a method, a device, equipment and a medium for generating an electronic program guide data table.
Background
With the rapid development of digital televisions, the traditional passive television mode is broken through by man-machine interaction, and a mode of actively generating an Electronic Program Guide (EPG) and displaying Electronic Program information to a user through an EPG system integrated in the front end of the digital television is realized.
In the EPG system, a Program specific Information/Service Information (PSI/SI) table contains physical characteristics of the entire broadcast network and Program Information, the PSI describes contents carried by a Transport Stream (TS), and the SI is an extension to the PSI. In the prior art, the PSI/SI table can be generated according to the preset digital television front-end technical parameters and the frequency points, and different frequency points correspond to different PSI/SI tables.
However, when the EPG system includes a multiple Network Information Table (NIT), a multiple frequency point publication Table, or a plurality of private descriptors, the amount of data in the EPG system is abruptly increased. The existing method can cause the speed of generating the PSI/SI table to be slow and the consumed time to be long.
Disclosure of Invention
The invention provides a method for generating an electronic program guide data sheet, which aims to improve the generation speed of the data sheet and further reduce the generation time of the data sheet.
In a first aspect, an embodiment of the present invention provides a method for generating an electronic program guide data table, including:
after receiving a request for generating a data table, extracting table index information included in the request for generating the data table, searching a preset data table cache, determining whether the table index information exists in the data table cache, and generating an electronic program guide data table corresponding to the request for generating the data table according to a searching judgment result.
In a second aspect, an embodiment of the present invention further provides an apparatus for generating an electronic program guide data table, including: a receiving module, a searching module and a generating module, wherein,
the receiving module is used for extracting table index information included in a generation request after the generation request of the data table is received;
the searching module is used for searching a preset data table cache and determining whether table index information exists in the data table cache;
and the generating module is used for generating an electronic program guide data table corresponding to the generation request according to the searching judgment result.
In a third aspect, an embodiment of the present invention further provides an electronic program guide data table generating device, including:
one or more processors; storage means for storing one or more programs; generating calling means for calling the data table, the table index information, and the table identification information and generating the data table; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the electronic program guide data table generating method as described in the first aspect.
In a fourth aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the method for generating a digital television electronic program guide data table according to the first aspect.
The invention provides a method for generating an electronic program guide data table, which comprises the following steps: after a data table generation request is received, table index information included in the generation request is extracted, and the feature information of the data table can be uniquely identified according to the extracted table index information. Furthermore, the extracted table index information can be searched in a preset data table cache, whether the table index information exists in the data table cache or not is determined, namely whether the data table characteristic information identical to the generation request exists in the data table cache or not is determined, and multiple generation of data tables with identical characteristic information is reduced. And finally, generating an electronic program guide data table corresponding to the generation request according to the searching judgment result, wherein the searching judgment result can determine whether to generate the data table, so that the generation speed of the data table in the EPG system is increased, and the problem of low generation speed of the data table in the prior art is solved.
Drawings
Fig. 1 is a flowchart of an electronic program guide data table generating method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating step 130 of a method for generating an electronic program guide data table according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating step 133 of a method for generating an electronic program guide data table according to an embodiment of the present invention;
fig. 4 is a schematic overall flowchart of a method for generating an electronic program guide data table according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an electronic program guide data table generating apparatus according to a second embodiment of the present invention;
fig. 6 is an electronic program guide data table generating apparatus according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The digital television user can select a channel, request a video program, sing a song online, and search various information provided by the digital television, such as life information, entertainment information, education information, sports information, and the like, by using a menu provided by the EPG. The user may also order programs using a menu provided by the EPG. Additional information about the program, such as an introduction to the program content, actors and director, etc., may also be viewed using the EPG menu.
The formation of an EPG relies on the program broadcast front end inserting SI in compliance with the Digital Video Broadcasting (DVB) standard into the TS carrying program information that carries all the data required by the EPG. The DVB standard specifies the data structure of the SI tables and their descriptors, which is one of the standards to which the EPG system conforms.
Specifically, the process of receiving the specified program by the digital television may include: the PSI Table firstly obtains a Packet Identifier (PID) value of a Program Map Table (PMT) of the Program from a Program Association Table (PAT), then finds out the PMT corresponding to the PID value from a TS stream, obtains a PID value of a basic code stream forming the Program from the PMT, filters out corresponding basic code streams of video, audio, data and the like according to the PID value, restores the basic code stream into an original signal after decoding, and deletes transmission packets containing other PIDs.
When the EPG system includes multiple NITs, multiple frequency point listings, or multiple private descriptors, specifically, the EPG system performs multiple NIT network broadcasts, full frequency point listings data, or even carries multiple private descriptors of corresponding networks, the data volume of the system increases dramatically. In this case, if all the data are generated into the corresponding data table, the data redundancy phenomenon may cause a reduction in the data table generation speed. Even when the data carries the private symbol description, the terminal in the corresponding network, i.e., the digital television, cannot respond to the private symbol description in time, thereby causing data delay or data delay. Specifically, the private character description may include: corresponding to city information, real-time news insertion, etc.
Fig. 1 is a flowchart of a method for generating an electronic program guide data table according to an embodiment of the present invention, where the embodiment is applicable to a case where a data table is quickly generated in an EPG system with multiple NITs, full spots, and a large number of private descriptors inserted therein, and the method may be executed by the EPG system, and specifically includes the following steps:
step 110, after receiving a request for generating a data table, extracting table index information included in the request for generating.
Specifically, when an Event Information Scheduling (EIS) of the EPG system acquires that EPG configuration data exists in the database, the EIS may send a request for generating a data table to the EPG system, and the EPG system may receive the request for generating and extract table index Information from the request through this step. The generation request may include table index information that may uniquely identify characteristic information of the spreadsheet within the digital TV headend system.
The data table may include PSI/SI table, and PSI describes the content carried by the transport stream, including description of elementary streams constituting each program table and description of the program itself. SI describes technical features of digital tv providing services. The digital television can complete automatic configuration and automatic receiving by using the SI information.
All PSI/SI information may be broadcast from the central system in the form of data tables containing physical characteristics of the entire broadcast network and program information, which may be encapsulated in fixed-size data blocks called segments at the time of transmission.
In addition, the PSI may include: PAT, Conditional Access Table (CAT), PMT, NIT. The SI may include: a Service group Association Table (BAT), a Service Description Table (SDT), an Event Information Table (EIT), a Run State Table (RST), a Time and Date Table (TDT), a Time Offset Table (TOT), a padding Table (ST), a Selection Information Table (SIT), and a Discontinuity Information Table (DIT). Because the data amount of the NIT, BAT, SDT and EIT is large, when the data table type comprises the NIT, BAT, SDT and EIT, the speed of the EPG generating the data table by the method of the embodiment is obviously increased. Any data table to be generated has table index information, which can be used to uniquely identify the characteristic information of the data table in the whole EPG, specifically, a network identification (network _ id) field of the NIT is used to uniquely identify different networks in the transmission system, a transport stream identification (transport _ stream _ id) field and an original network identification (original _ network _ id) field in the SDT are used to jointly identify different frequency points in one digital television network, and a service identification (service _ id) field, a transport stream identification (transport _ stream _ id) field and an original network identification (original _ network _ id) field in the EIT are used to jointly identify different services in one digital television network. Meanwhile, different table types are identified by a table identification (table _ id). For example, the NIT table comprises an actual _ network type and an other _ network type; the SDT table comprises an actual _ transport _ stream type and an other _ transport _ stream type; the EIT table includes active _ transport _ stream, present/following, and other _ transport _ stream, present/following four types.
It should be noted that the generation request may be generated by the EIS and issued to the EPS system. The EPS system may provide an interface for generating a data table to the outside, and when the EIS calls the interface, the EPS system may receive a generation request issued by the EIS.
EIS plays an important role in digital television systems, and assumes the role of a central coordinator among a front-end transmission system, a service system, and a conditional access system. The EIS may read the event list from the database, monitor the start time of the event, and prepare for the playout of the event by accessing an external interface just before the event is to begin.
Further, the EIS may issue a generation request to the EPS system by accessing the EPS system before the data table is to be generated.
In addition, the interface of the EPS system may query whether the table index same as the data table to be generated exists in the data table cache while being invoked.
And the EPS system receives a data table generation request issued by the EIS and prepares for the generation of the data table according to table index information included in the generation request. The EIS system may further prepare for the generation of the data table based on the table index information. Multiple generation of data tables is reduced.
Specifically, the EPS system searches the table index information of the cached data table in the data table cache, compares the table index information of the cached data table with the table index information included in the generation request, and determines whether the table index information included in the generation request exists in the data table cache according to a comparison result.
The preset data table cache may store all the generated data tables.
Because the table index information has uniqueness, if the table index information of the data tables is the same, the characteristic information of the data tables is the same, and similarly, if the table index information of the data tables is different, the characteristic information of the data tables is different.
The table index information contained in the data table cache and the generation request can be compared in a traversal manner. By comparing the table index information, the uniqueness judgment is carried out on the feature information of the data table to be generated before the data table is generated, the possibility that the data tables with the same feature information enter the data table cache is reduced, the generation of the data tables with the same feature information is further reduced, and the generation speed of the data tables is accelerated.
Specifically, the generation request includes table index information, the table index information may uniquely correspond to the data table feature information, the table index information in the generation request and the table index information in the data table cache are compared, and the corresponding data table is generated according to the comparison result.
The search determination result may include: the EPS system may process the generation request according to the above two cases, and generate the electronic program guide data table corresponding to the generation request.
In one embodiment, in a digital television cable network having a single network, containing 40 TSs, totaling 220 services. The full-frequency point table mode is adopted, that is, all tables describing the current TS and other TSs are transmitted in each TS (EIT table is selected for 7 days).
The data table is generated by adopting the prior art, and the time is 18 minutes and 24 seconds because a large number of PSI/SI tables are generated repeatedly. The method for generating the data table requires 1 minute and 32 seconds. The generation time of the data table is obviously shortened, and the speed is obviously accelerated.
In another embodiment, in a digital television cable network having five networks, each network containing 40 TSs, each network containing 220 services. And adopting an initial frequency point publishing mode, namely, sending a table describing the current TS and other TSs in the initial frequency point in each network, and only sending the table describing the current TS in other non-initial frequency points.
The time required to generate the data table using the prior art is 5 minutes and 24 seconds. The method for generating the data table requires 2 minutes and 16 seconds. The generation time of the data table is obviously shortened, and the speed is obviously accelerated.
When the data amount in the EPG system is normal, the data table may be generated according to the above procedure, so as to further increase the generation speed.
In the embodiment of the invention, when the number in the EPG system is increased suddenly, the generation speed of the data table is reduced by generating all the configuration data in the system into the data table, and the display of the electronic program information at the front end and the timely updating of the information are influenced, so that the EPS system can firstly extract the table index information included in the generation request after receiving the data table generation request issued by the EIS, determine the characteristic information of the data table to be generated, and correspondingly generate the data table according to the characteristic information of the data table. Specifically, it may be determined whether a data table identical to the feature information exists in a preset data table cache. And generating an electronic program guide data table corresponding to the generation request according to the searching judgment result. According to the method, the data table can be generated quickly, the generation quantity of the data table is reduced, the generation speed of the data table is increased, and the phenomenon that the data table is not generated timely is reduced.
Fig. 2 is a schematic flowchart of step 130 in an electronic program guide data table generating method according to an embodiment of the present invention, and in an implementation, as shown in fig. 2, step 130 may include the following steps:
and step 131, when the searching judgment result is that the electronic program guide data table corresponding to the generation request is generated according to the pre-configured technical parameters of the digital television front end.
Specifically, when the search determination result is that the table index information included in the generation request does not exist, the table index information identical to the table index information included in the generation request does not exist in the data table cache, that is, the data table identical to the feature information of the data table to be generated does not exist in the data table cache. An electronic program guide data table corresponding to the generation request can be generated according to the preset technical parameters of the digital television front end.
It should be noted that, before the data table is generated, the EPG system may edit the data, where the editing may specifically include: initializing data, and the like, wherein the data may specifically include frequency point information, symbol rate, and the like.
The digital television front-end technical parameters comprise information such as network, TS, service group and the like, and simultaneously comprise program data in each channel.
Specifically, table index information and table identification information corresponding to the electronic program guide data table may uniquely identify the data table. When the table index information is different through comparison, the data table characteristic information is different, and the table identification information is also different. The table identification information may be used to identify the data table, so the table index information may be associated with the corresponding table identification information, i.e., the second data information, and stored together in the data table cache.
In practical applications, the second data table may further include other data for identifying the data table.
And step 133, when the search determination result is that the electronic program guide data table exists, generating an electronic program guide data table corresponding to the generation request according to the first data table associated with the table index information in the data table cache.
Specifically, when the search determination result indicates that the table index information exists, the table index information identical to the table index information included in the generation request exists in the data table cache, that is, the data table identical to the feature information of the data table to be generated exists in the data table cache. The electronic program guide data table corresponding to the generation request can be generated according to the first data table associated with the table index information of the data table to be generated in the data table cache.
Wherein it is the same as the second data table. The first data table may also include table identifier, and in practical applications, the first data table may also include other data for identifying the data table.
The foregoing steps have determined that the same table index as the data table to be generated exists in the data table cache. The characteristic information of the data table to be generated already exists in the data table cache.
Since the table index information and the table identification information may uniquely identify the data table, in order to determine the uniqueness of the two or more data tables having the same table index information, the electronic program guide data table corresponding to the aforementioned generation request may be further generated by the table identification.
Fig. 3 is a flowchart illustrating a step 133 of a method for generating an electronic program guide data table according to an embodiment of the present invention, and in an implementation manner, as shown in fig. 3, the step 133 may include:
Specifically, the foregoing steps have determined that the same table index as the data table to be generated exists in the data table cache. In addition, since the generation request may further include table identification information, the data tables having the same characteristic information may include a plurality of different table identifications. The table index and the table identifier may uniquely identify the data table, so the EPG system may extract the table identifier included in the generation request, and may also extract the table identifier in the data table cache corresponding to the table index. Subsequent processing of the two table identifications may then be performed.
Wherein, any table index information may include at least one table identification information. For example, in NIT, the network _ id may include actual _ network and other _ network; in the BAT, a service group identifier (bouquet _ id) comprises a unique table identifier; in the SDT, transport _ steam _ id and origin _ network _ id may include actual _ transport _ stream and other _ transport _ stream; in EIT, service _ id, transport _ team _ id, and origin _ network _ id may include actual _ transport _ stream, present/following, and other _ transport _ stream, present/following.
Specifically, the table identification information included in the generation request is compared with the standard table identification information in the data table cache, and the electronic program guide data table corresponding to the generation request is generated according to the comparison result.
On the first hand, if the comparison result is that the to-be-generated data table identifier is different from the standard table identifier, the to-be-generated data table identifier is adopted to replace the standard table identifier in the first data information to form third data information, and the electronic program guide data table corresponding to the generation request is generated based on the third data information and the table index information corresponding to the third data information.
The identifier of the data table to be generated is different from the identifier of the standard table, which indicates that the data table to be generated is different from the data table in the data table cache, so that the electronic program guide data table corresponding to the generation request can be generated according to the table identifier information and the table index information of the data to be generated.
In order to reduce workload, the identifier of the data table to be generated may be used to replace the identifier of the standard table in the first data information, so as to form the third data information, i.e. the identifier of the data table to be generated. Of course, in practical cases, the third data may also be directly input by the data table to be generated.
In a second aspect, if the comparison result is that the identifier of the data table to be generated is the same as the identifier of the standard table, the electronic program guide data table corresponding to the generation request is generated directly based on the first data information and the table index information corresponding to the first data information.
The identifier of the data table to be generated is the same as the identifier of the standard table, and step 133 indicates that table index information which is the same as the table index information included in the generation request exists in the data table cache. In the case where the table index information and the table identification information are the same, the electronic program guide data table corresponding to the generation request may be generated based on the first data information, i.e., the table identification information and the table index information corresponding thereto. The data table is already present in the data table cache.
Preferably, since the data table is stored in the data table cache in segments, before generating the electronic program guide data table corresponding to the generation request based on the third data information, in order to identify whether the table data is changed, the method further includes: and updating the cyclic redundancy check value of the section where the data table identifier to be generated in the third data information is located.
The cyclic redundancy check value is mainly used to detect or check errors that may occur after data transmission or storage. The generated cyclic redundancy check value may be calculated before transmission or storage and appended to the data before the receiver checks to determine if the data has changed. The cyclic redundancy check values are all 32-bit integers.
Specifically, a cyclic redundancy check value may be appended to each piece of table data for calibrating the table data.
Fig. 4 is a schematic overall flow chart of an electronic program guide data table generating method according to an embodiment of the present invention, as shown in fig. 4, the overall flow chart may include:
step 1, after receiving a generation request containing first table index information, inquiring whether the first table index information exists in PSI/SI table cache, if not, executing step 2, and if so, executing step 3;
step 2, generating PSI/SI table data based on the first table index information and EPG configuration data so as to generate a PSI/SI table, and storing the first index information and a first table _ id corresponding to the first index information into a PSI/SI table cache;
step 3, inquiring whether a first table _ id exists in the PSI/SI table cache, if so, executing step 4, and if not, executing step 5;
step 4, the PSI/SI table to be generated exists in the PSI/SI table cache, and PSI/SI table data is copied and the PSI/SI table is generated;
and 5, resetting the data of the PSI/SI table based on the first table _ id and generating the PSI/SI table.
Before generating PSI/SI table, according to EPG configuration data making uniqueness judgment to PSI/SI table to be generated, when PSI/SI table buffer memory does not have PSI/SI table same as PSI/SI table to be generated, generating PSI/SI table, otherwise only copying PSI/SI table. The mode for generating the PSI/SI table reduces multiple generation of the same PSI/SI table, reduces the generation number of the PSI/SI table in the same time, and further improves the generation speed and efficiency of the PSI/SI table.
Fig. 5 is a schematic diagram of an electronic program guide data table generating device according to a second embodiment of the present invention, where the electronic program guide data table generating device according to the second embodiment of the present invention is capable of executing an electronic program guide data table generating method according to any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the executing method.
Specifically, as shown in fig. 5, the electronic program guide data table generating apparatus includes: a receiving module, a searching module and a generating module, wherein,
the receiving module 501 is configured to, after receiving a generation request of a data table, extract table index information included in the generation request.
The searching module 502 is configured to search a preset data table cache, and determine whether table index information exists in the data table cache.
The generating module 503 is configured to generate an electronic program guide data table corresponding to the generation request according to the search determination result.
In one embodiment, the generating module 503 may specifically include: a first execution unit, an adding unit, and a second execution unit, wherein,
and the first execution unit is used for generating an electronic program guide data table corresponding to the generation request according to the pre-configured technical parameters of the front end of the digital television when the searching judgment result is that the electronic program guide data table does not exist.
And the adding unit is used for adding second data information required by generating the electronic program guide data table to the data table cache in association with the table index information.
And the second execution unit is used for generating the electronic program guide data table corresponding to the generation request according to the first data table associated with the table index information in the data table cache when the search judgment result is that the electronic program guide data table exists.
In one embodiment, the second execution unit may specifically include: an extraction sub-unit and a contrast generation sub-unit, wherein,
and the extraction subunit is used for extracting the identifier of the data table to be generated from the generation request and acquiring first data information associated with the table index information from the data table cache.
And the execution subunit is used for comparing the identifier of the data table to be generated with the identifier of the standard table included in the first data information, and generating the electronic program guide data table corresponding to the generation request according to the comparison result.
Fig. 6 is an electronic program guide data table generating apparatus according to a third embodiment of the present invention, as shown in fig. 6, the apparatus includes: a processor 601, a memory 602 and a generation calling device 603; the number of processors 601 in the electronic program guide data table generating apparatus may be one or more, and one processor 601 is taken as an example in fig. 6; the processor 601, the memory 602 and the generation invocation means 603 in the device may be connected by a bus or other means, and the connection by the bus is taken as an example in fig. 6.
The memory 602 is used as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the electronic program guide data table generating method in the embodiment of the present invention (for example, a receiving module, a searching module, and a generating module in the electronic program guide data table generating apparatus). The processor 601 executes various functional applications and data processing of the apparatus by running software programs, instructions and modules stored in the memory 602, i.e., implements the above-described electronic program guide data table generating method.
The memory 602 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 602 may further include memory located remotely from the processor 601, which may be connected to the device/terminal/server via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. And generating calling means for calling the data table, the table index information and the table identification information and generating the data table.
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for generating an electronic program guide data table, the method including:
after receiving a generation request of a data table, extracting table index information included in the generation request;
searching a preset data table cache, and determining whether table index information exists in the data table cache;
and generating an electronic program guide data table corresponding to the generation request according to the searching judgment result.
Of course, the storage medium containing computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the method for generating an electronic program guide data table provided by any embodiments of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for generating an electronic program guide data sheet, comprising:
after receiving a generation request of a data table, extracting table index information included in the generation request;
searching a preset data table cache, and determining whether the table index information exists in the data table cache;
and generating an electronic program guide data table corresponding to the generation request according to the searching judgment result.
2. The method of claim 1, wherein generating the EPG data table corresponding to the generation request according to the search determination result comprises:
when the searching judgment result is not present, generating an electronic program guide data table corresponding to the generation request according to the pre-configured technical parameters of the front end of the digital television;
and when the search judgment result is that the electronic program guide data table exists, generating the electronic program guide data table corresponding to the generation request according to the first data table associated with the table index information in the data table cache.
3. The method of claim 2, further comprising, after generating the epg data sheet corresponding to the generation request according to the pre-configured dtv front-end technical parameters:
adding second data information required for generating an electronic program guide data table to the data table cache in association with the table index information.
4. The method of claim 2, wherein generating the epg data table corresponding to the generation request according to the first data information associated with the table index information in the data table cache comprises:
extracting a data table identifier to be generated from the generation request, and acquiring first data information associated with the table index information from the data table cache;
and comparing the identifier of the data table to be generated with the identifier of the standard table included in the first data information, and generating the electronic program guide data table corresponding to the generation request according to a comparison result.
5. The method of claim 4, wherein the generating the EPG data table corresponding to the generation request according to the comparison result comprises:
and if the comparison result shows that the to-be-generated data table identifier is different from the standard table identifier, replacing the standard table identifier in the first data information with the to-be-generated data table identifier to form third data information, and generating an electronic program guide data table corresponding to the generation request based on the third data information and the table index information corresponding to the third data information.
6. The method of generating an electronic program guide data sheet as set forth in claim 5, further comprising, before generating an electronic program guide data sheet corresponding to the generation request based on the third data information:
and updating the cyclic redundancy check value of the section where the to-be-generated data table identifier is located in the third data information.
7. The method of claim 4, wherein the generating the EPG data table corresponding to the generation request according to the comparison result comprises:
and if the comparison result is that the identifier of the data table to be generated is the same as the identifier of the standard table, directly generating the electronic program guide data table corresponding to the generation request based on the first data information and the table index information corresponding to the first data information.
8. An electronic program guide data table generating apparatus, comprising: a generation module, a table index information module and a table identification information module, wherein,
the receiving module is used for extracting table index information included in a generation request after the generation request of a data table is received;
the searching module is used for searching a preset data table cache and determining whether the table index information exists in the data table cache;
and the generating module is used for generating an electronic program guide data table corresponding to the generating request according to the searching judgment result.
9. An electronic program guide data table generating apparatus, characterized in that the apparatus comprises:
one or more processors;
storage means for storing one or more programs;
generating calling means for calling a data table, table index information of the data table, and table identification information of the data table and generating the data table;
when executed by the one or more processors, cause the one or more processors to implement the electronic program guide data table generating method as claimed in any one of claims 1-7.
10. A storage medium containing computer executable instructions for performing the electronic program guide data table generating method of any one of claims 1-7 when executed by a computer processor.
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