CN108235109B - Table information transmission method, smart television and computer readable storage medium - Google Patents
Table information transmission method, smart television and computer readable storage medium Download PDFInfo
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- CN108235109B CN108235109B CN201711467132.5A CN201711467132A CN108235109B CN 108235109 B CN108235109 B CN 108235109B CN 201711467132 A CN201711467132 A CN 201711467132A CN 108235109 B CN108235109 B CN 108235109B
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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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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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
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
Abstract
The invention discloses a table information transmission method, an intelligent television and a computer readable storage medium, wherein the method comprises the following steps: the method comprises the steps that the smart television obtains bottom layer signal data, and a target table type and a target table information version are extracted from the bottom layer signal data; matching the target table type with a table type stored in a preset cache; when the matching is successful, acquiring a current table information version corresponding to the target table type in the preset cache, when the target table information version is consistent with the current table information version, discarding the bottom layer signal data, and taking the current table information corresponding to the target table type in the preset cache as target table information; and feeding back the target table information to an application program. According to the invention, the multiple table information included in the bottom layer signal data of the ATSC3.0 standard is stored in the preset cache in a classified manner according to the table types in advance, and the corresponding table information is directly searched from the preset cache and fed back to the application program, so that the time consumption of the analysis process of the bottom layer signal data of the ATSC3.0 standard is saved, the efficiency of the application program for acquiring the table information is improved, and the user experience is improved.
Description
Technical Field
The invention relates to the field of smart televisions, in particular to a table information transmission method, a smart television and a computer readable storage medium.
Background
ATSC3.0 is the latest tv broadcast standard in the united states, which was established in the early 2017 and is also introduced in korea in the present year. Compared with the prior ATSC1.0 standard, the ATSC3.0 standard greatly improves the data transmission speed of the television, and the television and an operator can easily transmit 4K high-definition videos and the like so as to meet the pursuit of high image quality and tone quality of audiences. The ATSC3.0 also greatly improves the interactivity on the traditional function, and a user can only receive data of a television station in one way and can also quickly acquire interested multimedia resources through the Internet.
There will be 2 levels of data signals in the ATSC3.0 standard, the data signals comprising: low Level Signaling (LLS) and Service Layer Signaling (SLS), where LLS is core data and includes 5 types of table information, which are: service List Table (SLT), Rating Region Table (RRT), Advanced Emergency Alert Table (AEAT), system time (systemlime), and on screen Message Notification (Onscreen Message Notification). In the ATSC3.0 standard, the five table information provides basic program and control information to upper layer modules, such as applications for channel searching or program navigation. Usually, the application program will monitor the corresponding table information, and if the corresponding table information is received, the data will be returned to the application program, but the efficiency is low, and a certain time is consumed from the parsing of the LLS to the return of the corresponding table information to the application program, which results in poor user experience.
The above information is only for assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above information is prior art.
Disclosure of Invention
The invention mainly aims to provide a table information transmission method, a smart television and a computer readable storage medium, and aims to solve the technical problem that the efficiency of acquiring table information in bottom layer signal data by an application program is low.
In order to achieve the above object, the present invention provides a method, wherein the table information transmission method comprises the following steps:
the method comprises the steps that the smart television obtains bottom layer signal data, and a target table type and a target table information version are extracted from the bottom layer signal data;
matching the target table type with a table type stored in a preset cache;
when the matching is successful, acquiring a current table information version corresponding to the target table type in the preset cache, and judging whether the target table information version is consistent with the current table information version;
when the target table information version is consistent with the current table information version, discarding the bottom layer signal data, and taking the current table information corresponding to the target table type in the preset cache as target table information;
and feeding back the target table information to an application program.
Preferably, before feeding back the target table information to the application program, the table information transmission method further includes:
detecting whether a callback function corresponding to the target table type exists or not, and calling the callback function when the callback function corresponding to the target table type is detected;
correspondingly, the feeding back the target table information to the application program specifically includes:
and feeding back the target table information to an application program through the callback function.
Preferably, when the callback function corresponding to the target table type is detected and before the callback function is called, the table information transmission method further includes:
responding to a table information request sent by an application program, and extracting the target table type from the table information request;
and registering a callback function corresponding to the target table type.
Preferably, after registering the callback function corresponding to the target table type, the table information transmission method further includes:
judging whether target table information corresponding to the target table type is stored in the preset cache or not;
and when the target table information corresponding to the target table type is not stored in the preset cache, waiting for updating the target table information in the preset cache.
Preferably, after the target table type is matched with the table type stored in the preset cache, the table information transmission method further includes:
when the matching fails, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Preferably, the obtaining of the current table information version corresponding to the target table type in the preset cache specifically includes:
and acquiring a mapping relation in the preset cache, and searching a current table information version corresponding to the target table type from the mapping relation, wherein the mapping relation comprises a corresponding relation between the table type and the table information version.
Preferably, after the determining whether the target table information version is consistent with the current table information version, the table information transmission method further includes:
when the target table information version is inconsistent with the current table information version, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Preferably, the acquiring bottom layer signal data specifically includes:
and acquiring a transport stream, and analyzing the transport stream through a signaling information layer to acquire bottom layer signal data.
In addition, in order to achieve the above object, the present invention further provides a smart tv, including: a memory, a processor and a table information transmission program stored on the memory and executable on the processor, the table information transmission program being configured to implement the steps of the table information transmission method as described above.
Further, to achieve the above object, the present invention also proposes a computer-readable storage medium having stored thereon a table information transmission program which, when executed by a processor, implements the steps of the table information transmission method as described above.
According to the invention, the multiple table information included in the bottom layer signal data of the ATSC3.0 standard is stored in the preset cache in a classified manner according to the table types in advance, and the corresponding table information is directly searched from the preset cache and fed back to the application program, so that the time consumption of the analysis process of the bottom layer signal data of the ATSC3.0 standard is saved, the efficiency of the application program for acquiring the table information is improved, and the user experience is improved.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent television of a hardware operating environment according to an embodiment of a table information transmission method of the present invention;
FIG. 2 is a flowchart illustrating a table information transmission method according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a table information transmission method according to a second embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent television in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the smart tv may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the smart tv, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a table information transmission program.
In the smart television shown in fig. 1, the network interface 1004 is mainly used for connecting to a cloud server and performing data communication with the cloud server; the user interface 1003 is mainly used for connecting a remote controller and performing data communication with the remote controller, and the smart television calls a table information transmission program stored in the memory 1005 through the processor 1001 and executes the following operations:
the method comprises the steps that the smart television obtains bottom layer signal data, and a target table type and a target table information version are extracted from the bottom layer signal data;
matching the target table type with a table type stored in a preset cache;
when the matching is successful, acquiring a current table information version corresponding to the target table type in the preset cache, and judging whether the target table information version is consistent with the current table information version;
when the target table information version is consistent with the current table information version, discarding the bottom layer signal data, and taking the current table information corresponding to the target table type in the preset cache as target table information;
and feeding back the target table information to an application program.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
detecting whether a callback function corresponding to the target table type exists or not, and calling the callback function when the callback function corresponding to the target table type is detected;
correspondingly, the feeding back the target table information to the application program specifically includes:
and feeding back the target table information to an application program through the callback function.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
responding to a table information request sent by an application program, and extracting the target table type from the table information request;
and registering a callback function corresponding to the target table type.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
judging whether target table information corresponding to the target table type is stored in the preset cache or not;
and when the target table information corresponding to the target table type is not stored in the preset cache, waiting for updating the target table information in the preset cache.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
when the matching fails, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
and acquiring a mapping relation in the preset cache, and searching a current table information version corresponding to the target table type from the mapping relation, wherein the mapping relation comprises a corresponding relation between the table type and the table information version.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
when the target table information version is inconsistent with the current table information version, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Further, the processor 1001 may call the table information transmission program stored in the memory 1005, and also perform the following operations:
and acquiring a transport stream, and analyzing the transport stream through a signaling information layer to acquire bottom layer signal data.
In the embodiment, the multiple table information included in the bottom layer signal data of the ATSC3.0 standard is stored in the preset cache in advance according to the table types in a classified manner, and the corresponding table information is directly searched from the preset cache and fed back to the application program, so that the time consumption of the analysis process of the bottom layer signal data of the ATSC3.0 standard is saved, the efficiency of the application program for acquiring the table information is improved, and the user experience is improved.
Based on the hardware structure, the embodiment of the table information transmission method is provided.
Referring to fig. 2, a table information transmission method according to a first embodiment of the present invention is provided.
In this embodiment, the table information transmission method includes the following steps:
step S10, the smart television acquires bottom layer signal data, and extracts a target table type and a target table information version from the bottom layer signal data;
it is to be understood that the signaling information layer of the ATSC3.0 standard includes 2 types of data signals of the ATSC3.0 standard: low Level Signaling (LLS) and Service Layer Signaling (SLS), where LLS is core data and includes 5 types of table information, which are: service List Table (SLT), Rating Region Table (RRT), Advanced Emergency Alert Table (AEAT), system time (systemmime), and on screen Message Notification (OMN).
It should be understood that the bottom-layer signal data is data of a signaling information layer of the ATSC3.0 standard, and the acquiring of the bottom-layer signal data may be obtained by parsing a Transport Stream (TS) through the signaling information layer, and in this embodiment, the acquiring of the bottom-layer signal data specifically includes: and acquiring a transport stream, and analyzing the transport stream through a signaling information layer to acquire bottom layer signal data.
It should be noted that, five table information included in the data signal of the ATSC3.0 standard all correspond to different table types, and various table information can be distinguished by the table types, for example: the target table type may be SLT, RRT, AEAT, Systemtime, or OMN. The bottom signal data comprises a target table type, target table information and a target table information version, and the target table information version can be used for judging whether the table information is the latest version of table information.
Step S20, matching the target table type with the table type stored in a preset cache;
it should be understood that, in order to improve the data transmission efficiency of transmitting various table information included in the signaling information layer of the ATSC3.0 standard to the application program, a cache manner is adopted, and when receiving a data signal of the ATSC3.0 standard sent by the signaling information layer of the ATSC3.0 standard, the smart television analyzes the data signal of the ATSC3.0 standard in advance to obtain a table type and table information, and stores the table information in a preset cache according to table type classification.
It should be noted that the data signal of the ATSC3.0 standard includes: low Level Signaling (LLS) and Service Layer Signaling (SLS), where LLS is core data and includes 5 types of table information, which are: service List Table (SLT), hierarchical Region Table (RRT), Advanced Emergency Alert Table (AEAT), system time (systemlime), and screen Message Notification (Onscreen Message Notification), the Table types may be set as character type identifiers such as SLT, RRT, AEAT, systemlime, and OMN, and the preset cache stores the above-mentioned various Table types and the Table information corresponding to the Table types.
For example: and if the target table type extracted from the bottom layer signal data is the SLT, searching whether the SLT type and the table information corresponding to the SLT type are stored in the preset cache.
Step S30, when the matching is successful, obtaining the current table information version corresponding to the target table type in the preset cache, and judging whether the target table information version is consistent with the current table information version;
step S40, when the version of the target table information is consistent with the version of the current table information, discarding the bottom layer signal data, and taking the current table information corresponding to the type of the target table in the preset cache as the target table information;
it can be understood that, when matching is successful, it indicates that the table information corresponding to the target table type is already stored in the preset buffer, in order to improve efficiency, before analyzing the bottom signal data of the ATSC3.0 standard, the current version information of the current table information corresponding to the target table type stored in the preset buffer may be acquired, the target version information may be extracted from the bottom signal data of the ATSC3.0 standard, and it is determined whether the target version information is consistent with the current version information, if the target version information is consistent with the current version information, it is not necessary to analyze the bottom signal data of the ATSC3.0 standard, the bottom signal data may be discarded, and the current table information stored in the preset buffer may be directly used as the target table information.
It should be noted that, if the target version information is not consistent with the current version information, it is usually that the target version information is newer than the current version information pre-stored in the preset cache, at this time, the bottom layer signal data may be analyzed, and the current table information stored in the preset cache is replaced with the target table information obtained through analysis, so that the latest table information is stored in the preset cache.
When the target table information version is inconsistent with the current table information version, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
In a specific implementation, in order to improve data transmission efficiency of transmitting various table information included in a signaling information layer of the ATSC3.0 standard to the application program, a caching manner is adopted, and when receiving a data signal of the ATSC3.0 standard sent by the signaling information layer of the ATSC3.0 standard, the smart television analyzes the data signal of the ATSC3.0 standard in advance to obtain a table type, table information, and a table information version, and stores the table information and the table information version in a preset cache according to a table type classification, and may generally establish a mapping relationship between the table type and the table information version, and store the mapping relationship in the preset cache, in this embodiment, the obtaining a current table information version corresponding to the target table type in the preset cache specifically includes: and acquiring a mapping relation in the preset cache, and searching a current table information version corresponding to the target table type from the mapping relation, wherein the mapping relation comprises a corresponding relation between the table type and the table information version.
It should be understood that, in the preset cache, table information corresponding to the target table type may not be stored, that is, the target table type is matched with the table type stored in the preset cache, if matching fails, the bottom layer signal data is usually analyzed, the table type and the corresponding table information are obtained through analysis, the table information obtained through analysis is usually classified and stored in the preset cache according to the table type, in this embodiment, when matching fails, the bottom layer signal data is analyzed, and the target table information is obtained; and storing the target table information to the preset cache in a classified manner according to the type of the target table.
And step S50, feeding the target table information back to the application program.
It should be understood that the application is an application installed in the smart television and required by the user to watch the television, such as: the present embodiment is not limited to the application programs such as channel searching, program navigation, or interactive video service.
In a specific implementation, the application program is an upper module of a signaling information layer of the ATSC3.0 standard, in the ATSC3.0 standard, the five table information provides basic program and control information to each application program, and each application program needs to execute corresponding operations according to the received corresponding table information to implement a service function corresponding to each application program. Therefore, when the target table information is found in the preset cache, the target table information can be fed back to the application program, so that the application program can realize the corresponding service function.
In the embodiment, the multiple types of table information included in the bottom layer signal data of the ATSC3.0 standard are stored in the preset cache in a classified manner according to the table types in advance, and the corresponding table information is directly searched from the preset cache and fed back to the application program, so that the time consumption of the analysis process of the bottom layer signal data of the ATSC3.0 standard is saved, the efficiency of the application program for acquiring the table information is improved, and the user experience is improved.
Further, as shown in fig. 3, a second embodiment of a table information transmission method according to the present invention is proposed based on the first embodiment.
In this embodiment, before the step S50, the method further includes:
step S401, detecting whether a callback function corresponding to the target table type exists or not, and calling the callback function when the callback function corresponding to the target table type is detected;
correspondingly, the step S50 specifically includes:
step S501, feeding back the target table information to an application program through the callback function.
It should be understood that, the user selects the corresponding application service through the remote controller, the application program sends the table information request, and when the corresponding table information request is obtained, the corresponding application service function is realized. Generally, when the smart television responds to a table information request sent by the application program, and when a target table type is extracted from the table information request, and registers a callback function corresponding to the target table type, so that when the target table information corresponding to the target table type is found from the preset cache, the target table information may be returned to the application program through the registered callback function, in this embodiment, before the callback function corresponding to the target table type is called when the callback function corresponding to the target table type is detected, the table information transmission method further includes: responding to a table information request sent by an application program, and extracting the target table type from the table information request; and registering a callback function corresponding to the target table type.
It will be appreciated that the type of callback function corresponds to a table type, for example: the table type comprises character type identifications such as an SLT, an RRT, an AEAT, a Systemtime or an OMN, and the callback function comprises an SLT callback function, an RRT callback function, an AEAT callback function, a Systemtime callback function or an OMN callback function.
In a specific implementation, in order to improve the transmission efficiency of table information, after a callback function corresponding to the target table type is registered, it is first determined whether target table information corresponding to the target table type is stored in the preset cache, when the target table information corresponding to the target table type is stored in the preset cache, the target table information stored in the preset cache may be directly returned through the registered callback function, and when the target table information corresponding to the target table type is not stored in the preset cache, the target table information is waited to be updated in the preset cache. When the target table information corresponding to the target table type is not found in the preset cache, in order to feed back the updated target table information in the preset cache at the first time, whether the target table information is updated in the preset cache can be monitored in real time, and when the target table information is updated in the preset cache, the updated target table information can be fed back to the application program,
it should be noted that, when the target table information is found from the preset cache, it may be detected whether a callback function corresponding to the target table type already exists, if the callback function corresponding to the target table type is detected, the callback function may be called to feed back the target table information found from the preset cache, and the target table information is returned to the application program, and when the application program receives a corresponding table information request, the corresponding application program service function is implemented.
In this embodiment, table information required by an application program is quickly fed back through a callback function, when the callback function corresponding to the target table type is detected, the target table information is fed back to the application program by calling the callback function, and when the table information is updated in the preset cache, the updated table information is also fed back to the application program, so that the application program can quickly and efficiently acquire desired data and can quickly receive the table information of the latest version.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a table information transmission program is stored on the computer-readable storage medium, and when executed by a processor, the table information transmission program implements the following operations:
the method comprises the steps that the smart television obtains bottom layer signal data, and a target table type and a target table information version are extracted from the bottom layer signal data;
matching the target table type with a table type stored in a preset cache;
when the matching is successful, acquiring a current table information version corresponding to the target table type in the preset cache, and judging whether the target table information version is consistent with the current table information version;
when the target table information version is consistent with the current table information version, discarding the bottom layer signal data, and taking the current table information corresponding to the target table type in the preset cache as target table information;
and feeding back the target table information to an application program.
Further, the table information transmission program when executed by the processor further implements the following operations:
detecting whether a callback function corresponding to the target table type exists or not, and calling the callback function when the callback function corresponding to the target table type is detected;
correspondingly, the feeding back the target table information to the application program specifically includes:
and feeding back the target table information to an application program through the callback function.
Further, the table information transmission program when executed by the processor further implements the following operations:
responding to a table information request sent by an application program, and extracting the target table type from the table information request;
and registering a callback function corresponding to the target table type.
Further, the table information transmission program when executed by the processor further implements the following operations:
judging whether target table information corresponding to the target table type is stored in the preset cache or not;
and when the target table information corresponding to the target table type is not stored in the preset cache, waiting for updating the target table information in the preset cache.
Further, the table information transmission program when executed by the processor further implements the following operations:
when the matching fails, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Further, the table information transmission program when executed by the processor further implements the following operations:
and acquiring a mapping relation in the preset cache, and searching a current table information version corresponding to the target table type from the mapping relation, wherein the mapping relation comprises a corresponding relation between the table type and the table information version.
Further, the table information transmission program when executed by the processor further implements the following operations:
when the target table information version is inconsistent with the current table information version, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
Further, the table information transmission program when executed by the processor further implements the following operations:
and acquiring a transport stream, and analyzing the transport stream through a signaling information layer to acquire bottom layer signal data.
In the embodiment, the multiple types of table information included in the bottom layer signal data of the ATSC3.0 standard are stored in the preset cache in a classified manner according to the table types in advance, and the corresponding table information is directly searched from the preset cache and fed back to the application program, so that the time consumption of the analysis process of the bottom layer signal data of the ATSC3.0 standard is saved, the efficiency of the application program for acquiring the table information is improved, and the user experience is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The usage of the words first, second, third, etcetera herein does not indicate any ordering. These words may be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in the storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the information in the specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A table information transmission method, characterized by comprising the steps of:
the method comprises the steps that the smart television obtains bottom layer signal data, and a target table type and a target table information version are extracted from the bottom layer signal data;
matching the target table type with a table type stored in a preset cache;
when the matching fails, analyzing the bottom layer signal data to obtain target table information;
storing the target table information to the preset cache in a classified manner according to the type of the target table;
when the matching is successful, acquiring a current table information version corresponding to the target table type in the preset cache, and judging whether the target table information version is consistent with the current table information version;
when the target table information version is consistent with the current table information version, discarding the bottom layer signal data, and taking the current table information corresponding to the target table type in the preset cache as target table information;
feeding back the target table information to an application program;
when the target table information version is inconsistent with the current table information version, analyzing the bottom layer signal data to obtain target table information;
and storing the target table information to the preset cache in a classified manner according to the type of the target table.
2. The table information transmission method of claim 1, wherein before feeding back the target table information to an application, the table information transmission method further comprises:
detecting whether a callback function corresponding to the target table type exists or not, and calling the callback function when the callback function corresponding to the target table type is detected;
correspondingly, the feeding back the target table information to the application program specifically includes:
and feeding back the target table information to an application program through the callback function.
3. The table information transmission method according to claim 2, wherein, before the callback function is called when the callback function corresponding to the target table type is detected, the table information transmission method further includes:
responding to a table information request sent by an application program, and extracting the target table type from the table information request;
and registering a callback function corresponding to the target table type.
4. The table information transmission method of claim 3, wherein after registering the callback function corresponding to the target table type, the table information transmission method further comprises:
judging whether target table information corresponding to the target table type is stored in the preset cache or not;
and when the target table information corresponding to the target table type is not stored in the preset cache, waiting for updating the target table information in the preset cache.
5. The table information transmission method according to claim 1, wherein the obtaining of the current table information version corresponding to the target table type in the preset cache specifically includes:
and acquiring a mapping relation in the preset cache, and searching a current table information version corresponding to the target table type from the mapping relation, wherein the mapping relation comprises a corresponding relation between the table type and the table information version.
6. The table information transmission method according to any one of claims 1 to 5, wherein the acquiring of the underlying signal data specifically includes:
and acquiring a transport stream, and analyzing the transport stream through a signaling information layer to acquire bottom layer signal data.
7. An intelligent television, characterized in that the intelligent television comprises: memory, processor and a table information transmission program stored on the memory and executable on the processor, the table information transmission program being configured to implement the steps of the table information transmission method according to any of claims 1 to 6.
8. A computer-readable storage medium, characterized in that a table information transmission program is stored thereon, which when executed by a processor implements the steps of the table information transmission method according to any one of claims 1 to 6.
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