CN101860736B - Method and system for acquiring tip message of latest program - Google Patents
Method and system for acquiring tip message of latest program Download PDFInfo
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- CN101860736B CN101860736B CN2009100819163A CN200910081916A CN101860736B CN 101860736 B CN101860736 B CN 101860736B CN 2009100819163 A CN2009100819163 A CN 2009100819163A CN 200910081916 A CN200910081916 A CN 200910081916A CN 101860736 B CN101860736 B CN 101860736B
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Abstract
The invention discloses a method for acquiring the tip message of a latest program. The method comprises the following steps that: a terminal acquires the tip message of a program, which is sent by a service logical channel, and judges whether the tip message of the program, which is sent by the service logical channel, is acquired for the first time, wherein the tip message of the program contains an update sequence number; if so, the terminal de-multiplexes the acquired tip message of the program, records the content of the de-multiplexed tip message of the program and finishes the current processing procedure; if not, the terminal de-multiplexes the update sequence number in the acquired tip message of the program; the terminal judges whether the de-multiplexed current update sequence number is the same as the recorded update sequence number that was sent by the same service logical channel; if so, the terminal finishes the current processing procedure; and if not, the terminal de-multiplexes the acquired tip message of the program and records the content of the de-multiplexed tip message of the program. The invention further discloses a system for acquiring the tip message of the latest program. The invention can save the resources and improve the user experience.
Description
Technical Field
The present invention relates to mobile multimedia broadcasting services, and in particular, to a method and system for acquiring latest program prompt information in a mobile multimedia broadcasting service.
Background
Mobile multimedia broadcasting service (also called mobile television service) has a plurality of implementation technologies, including: multimedia Broadcast Multicast Service (MBMS), Broadcast and Multicast Service (BCMCS), streaming media technology based on a mobile communication network; technologies based on broadcast networks such as terrestrial Digital Broadcasting and satellite Digital Broadcasting, such as Digital Video Broadcasting-Handheld (DVB-H) in europe, Media Forward Link (MediaFLO) in the united states, and China Mobile Multimedia Broadcasting (CMMB) in China. The mobile multimedia broadcasting service based on the broadcasting network has been widely used because of its advantages of high spectrum utilization rate, large capacity, relatively low construction cost, wide audience, etc.
In order to reduce the terminal power consumption of the mobile multimedia broadcasting system, the mobile multimedia broadcasting service is transmitted in a time slice burst manner. Each mobile multimedia broadcast service is transmitted in a separate time slice. For example, a CMMB broadcast channel frame is 1 second in duration and consists of 40 25 ms slots, one or more of which may carry channel data encapsulated by a broadcast multiplex frame.
When using the mobile multimedia broadcasting service, the user knows the relevant information of the mobile multimedia broadcasting service, including the service name, the playing time, the content outline and the like, through an Electronic Service Guide (ESG), and realizes the quick retrieval, preview and access to the mobile multimedia broadcasting service. The ESG provides a good navigation mechanism for users to watch tv programs and enjoy information services, so that users can conveniently find programs of interest and view additional information of programs.
In the mobile multimedia broadcasting system, the ESG is composed of basic description information, data information, and program guide information. The basic description information is the control information of the ESG, describes the distribution condition, the update state and the like of the data information in the ESG service, and is transmitted in a control logic channel; the data information is the main body of ESG, describing service information, service expansion information, arrangement information, content information and service parameter information related to the mobile multimedia broadcasting service, and being transmitted as a special mobile multimedia broadcasting service; the program prompt information is auxiliary information of ESG, describing summary information of the program played in the current time period and the next time period of the service, and is transmitted along with the video and audio services of the mobile multimedia broadcast. Wherein, the data information and the program prompt information are transmitted in the service logic channel.
On the receiving terminal side of the mobile multimedia broadcast service, when a user watches a program or switches services/channels through the terminal, it is necessary to quickly know the program content information being played on the current service/channel, such as start time, topic, duration, etc., and what program content information is played in the next time slot, which is the program prompt information.
Currently, in mobile multimedia broadcasting services, program reminder information is transmitted in a program channel together with a video segment and an audio segment. The terminal may receive the program reminder every second. However, the program guide information is not updated every second, unlike video and audio. After acquiring the program prompt information from a specific service logical channel, the following three processing methods are generally used for the program prompt information of the service logical channel that is continuously received in the future:
firstly, demultiplexing the program prompt information every time, then integrally comparing with the program prompt information received last time, and judging whether the program prompt information is updated or not, thereby determining whether the program prompt information needs to be updated or not;
secondly, demultiplexing the program prompt information, directly covering the program prompt information without comparing with the program prompt information received last time, and refreshing and displaying the program prompt information again;
and thirdly, the received program prompt information is not demultiplexed any more unless the user refreshes actively.
In the first and second modes, the program prompt information needs to be demultiplexed each time, and the demultiplexed program prompt information is compared with or refreshed and displayed on the program prompt information received last time, so that resource waste is obviously caused; the third mode cannot update the program prompt information in time, and the use experience of the user is influenced.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for obtaining the latest program prompt information, which can save resources and improve the user experience.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for obtaining prompt information of latest programs comprises the following steps:
the terminal acquires the program prompt information which is sent by the service logic channel and contains the updating sequence number, judges whether the program prompt information sent by the service logic channel is acquired for the first time, if so, demultiplexes the acquired program prompt information, records the content of the program prompt information obtained by demultiplexing, and then ends the current processing flow; otherwise, demultiplexing the updating sequence number in the acquired program prompt information;
the terminal judges whether the current updating sequence number obtained by demultiplexing is the same as the recorded updating sequence number sent before the same service logic channel, if so, the current processing flow is ended; otherwise, demultiplexing the acquired program prompt information, and recording the content of the program prompt information acquired by demultiplexing.
Before the terminal obtains the program prompt information containing the update sequence number sent by the service logic channel, the method further includes: the front end adds an update sequence number in the program prompt information, and encapsulates the program prompt information containing the update sequence number in a multiplex frame and sends the multiplex frame to the terminal through a service logic channel.
Before adding the update sequence number in the program prompt message, the method further comprises the following steps: and changing the value of the update sequence number according to the update of the program prompt information.
Wherein, the value of changing the update sequence number according to the update of the program prompt information is specifically: and adding 1 or subtracting 1 to the value of the update sequence number every time the program prompt information is updated.
Wherein, the updating sequence number occupies 1 to 6 bits of a reserved field in the program prompt message.
A system for obtaining the prompt information of the latest program comprises a program prompt information obtaining module, a program prompt information judging module, an update sequence number demultiplexing module, an update sequence number judging module, a program prompt information demultiplexing module and a program prompt information recording module; wherein,
the program prompt information acquisition module is used for acquiring program prompt information which is sent by a service logic channel and contains an update sequence number;
the program prompt information judging module is used for judging whether to acquire the program prompt information sent by the service logic channel for the first time;
the updating sequence number demultiplexing module is used for demultiplexing the updating sequence number in the acquired program prompt information when the program prompt information judging module learns that the program prompt information sent by the service logic channel is not acquired for the first time;
the updating sequence number judging module is used for judging whether the current updating sequence number obtained by demultiplexing is the same as the recorded updating sequence number sent before the same service logic channel;
the program prompt information demultiplexing module is used for demultiplexing the acquired program prompt information when the program prompt information judgment module learns that the program prompt information sent by the service logic channel is acquired for the first time; or, when the update sequence number judging module learns that the current update sequence number is different from the recorded update sequence number, the obtained program prompt information is demultiplexed;
and the program prompt information recording module is used for recording the content of the program prompt information obtained by demultiplexing.
The program prompt information acquisition module, the program prompt information judgment module, the update sequence number demultiplexing module, the update sequence number judgment module, the program prompt information demultiplexing module and the program prompt information recording module are located at a terminal side.
The system further comprises an update sequence number adding module and a program prompt information sending module; wherein,
the updating sequence number adding module is used for adding an updating sequence number in the program prompt message;
and the program prompt information sending module is used for packaging the program prompt information containing the update sequence number in a multiplexing frame and sending the multiplexing frame to the update sequence number demultiplexing module through a service logic channel.
The system further comprises an update sequence number dereferencing module, which is used for changing the dereferencing of the update sequence number according to the update of the program prompt information before the update sequence number adding module adds the update sequence number to the program prompt information.
The updating sequence number adding module, the program prompt information sending module and the updating sequence number dereferencing module are positioned at the front end side.
It can be seen from the above technical solutions that when the front end of the mobile multimedia broadcasting system of the present invention sends the program prompt information, an update sequence number of the program prompt information in the current multiplex frame is added and recorded, and when the program prompt information is updated, the update sequence number is also updated correspondingly. After the terminal receives the program prompt information for the first time in a specific service logic channel, the terminal de-multiplexes the program prompt information and records the whole content of the program prompt information, including the update sequence number. For the program prompt information of the specific service logic channel received later, the terminal only demultiplexes the update sequence number at first, and determines whether to continue demultiplexing all the contents of the received program prompt information by comparing the update sequence number, so that resources can be saved, a user can be ensured to obtain the latest program prompt information, and the use experience of the user is improved.
Drawings
FIG. 1 is a flowchart of a method for obtaining the latest program prompt information according to the present invention;
FIG. 2 is a diagram of a prior art program reminder information package;
FIG. 3 is a schematic diagram of a program guide information package structure according to the present invention;
fig. 4 is a schematic structural diagram of a system for acquiring the latest program prompt information according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below.
As shown in fig. 1, the method for acquiring the latest program prompt information of the present invention includes the following steps:
The front end of the mobile multimedia broadcasting system refers to an ESG front end system, which mainly includes an ESG information editor, a data server, and a broadcasting server, which is the prior art and is not described herein again.
The following compares the packaging structure of the program reminder information of the present invention with the prior art in conjunction with fig. 2 and 3.
The packaging structure of the program prompt information in the prior art is shown in fig. 2, and includes a record number field, a reserved field, a record field, and a check field; wherein:
recording a number field: 2 bit field, which represents the program prompt information quantity contained in the data unit;
recording field: the method can comprise one or more records, wherein the first record is current program information, and if subsequent records exist, the next program information is sequentially represented; each record includes:
start time: a 40-bit field indicating the start time and date of the program;
duration: a 16-bit field indicating the length of time for playing the content or program;
the language type: a 24-bit field indicating the language used for the text field;
subject length: an 8-bit field indicating the length of the subject;
subject matter: an 8-bit field indicating the name of the program content being played.
Check field CRC _ 32: a Cyclic Redundancy Check (CRC) of a 32-bit field.
Reserving a domain: a 6 bit field, spare.
The packaging structure of the program prompt message of the invention is different from the prior art in that: the invention adds the updating serial number in the program prompt information. Taking fig. 3 as an example, the update sequence number occupies 4 bits of the reserved field in the program guide information. Of course, the update sequence number may occupy 1 to 6 bits of the reserved field.
Before adding the update sequence number, the front end changes the value of the update sequence number according to the update of the program prompt information, namely: if the program prompt information is updated, the update sequence number is also updated correspondingly, for example: the value of the update sequence number may be incremented or decremented by 1 each time the update is made. And if the update sequence number is represented by 4 bits, the update sequence number is cyclically valued between 0 and 15.
In step 102, the terminal receives a multiplex frame transmitted from a certain service logical channel.
And 103, demultiplexing the received multiplexing frame by the terminal to acquire the program prompt information containing the updating sequence number.
104-105, the terminal judges whether the program prompt information sent by the service logic channel is acquired for the first time, if so, the step 107 is executed, and then the current processing flow is ended; otherwise, only the updating sequence number in the acquired program prompt information is demultiplexed.
Here, the terminal determines whether to acquire the program prompt information for the first time, and may determine whether to store the program prompt information sent by the service logical channel.
Here, since the same service logical channel generally transmits the program notification information of the same service channel, the update sequence number compared in step 106 should be the update sequence number transmitted by the same service logical channel, otherwise, there is no comparability.
And step 107, the terminal demultiplexes the acquired program prompt information and records all contents of the program prompt information obtained by demultiplexing, wherein the contents comprise the current update sequence number.
As can be seen from the above analysis, when demultiplexing the program prompt message sent from a certain service logical channel received for the first time, the terminal records all the contents of the program prompt message, and then, the terminal performs the following processing on the program prompt message sent from the service logical channel received later:
1. under the condition that the program prompt information received later is not updated, the terminal can acquire and ensure that the user obtains the latest program prompt information only by demultiplexing the update serial number with a small occupied digit;
2. once the program prompt information received later is updated, the terminal can further update the program prompt information in time according to the comparison that the current update serial number is different from the recorded update serial number.
Therefore, the invention solves the problems that the resource waste is caused by demultiplexing the complete program prompt information every time at present and the user can not be ensured to obtain the latest program prompt information in real time.
In order to implement the above method for obtaining the prompt information of the latest program, the present invention further provides a system for obtaining the prompt information of the latest program, as shown in fig. 4, the system includes: a program prompt information acquisition module 10, a program prompt information judgment module 20, an update sequence number demultiplexing module 30, an update sequence number judgment module 40, a program prompt information demultiplexing module 50 and a program prompt information recording module 60; wherein,
a program prompt information obtaining module 10, configured to obtain program prompt information including an update sequence number sent by a service logic channel;
a program prompt information judging module 20, configured to judge whether to obtain a program prompt information sent from the service logical channel for the first time;
an update sequence number demultiplexing module 30, configured to demultiplex the update sequence number in the obtained program prompt information when the program prompt information judging module 20 learns that the program prompt information sent by the service logical channel is not obtained for the first time;
an update sequence number judgment module 40, configured to judge whether a current update sequence number obtained by demultiplexing is the same as an update sequence number sent before a recorded same service logical channel;
a program prompt information demultiplexing module 50, configured to demultiplex the obtained program prompt information when the program prompt information judgment module 20 learns that the program prompt information sent by the service logical channel is obtained for the first time; or, when the update sequence number judgment module 40 learns that the current update sequence number is different from the recorded update sequence number, the obtained program prompt information is demultiplexed;
and a program prompt information recording module 60, configured to record content of the program prompt information obtained by demultiplexing.
The program prompt information acquisition module 10, the program prompt information judgment module 20, the update sequence number demultiplexing module 30, the update sequence number judgment module 40, the program prompt information demultiplexing module 50 and the program prompt information recording module 60 are all located at the terminal side of the mobile multimedia broadcasting system.
The system further comprises an update sequence number adding module 80 and a program prompt information sending module 90; wherein,
an update sequence number adding module 80, configured to add an update sequence number to the program prompt information;
a program prompt information sending module 90, configured to encapsulate the program prompt information containing the update sequence number in a multiplexing frame, and send the multiplexing frame to the update sequence number demultiplexing module through a service logic channel.
The update sequence number adding module 80 and the program prompt information sending module 90 are located at the front end of the mobile multimedia broadcasting system.
The system further includes an update sequence number dereferencing module 70, configured to change a dereferencing of the update sequence number according to an update along with the update of the program prompt information before the update sequence number adding module 80 adds the update sequence number to the program prompt information. The update sequence number dereferencing module 70 is located at the front end side of the mobile multimedia broadcasting system.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for obtaining reminder information of latest programs, the method comprising:
the terminal acquires the program prompt information which is sent by the service logic channel and contains the updating sequence number, judges whether the program prompt information sent by the service logic channel is acquired for the first time, if so, demultiplexes the acquired program prompt information, records the content of the program prompt information obtained by demultiplexing, and then ends the current processing flow; otherwise, demultiplexing the updating sequence number in the acquired program prompt information;
the terminal judges whether the current updating sequence number obtained by demultiplexing is the same as the recorded updating sequence number sent before the same service logic channel, if so, the current processing flow is ended; otherwise, demultiplexing the acquired program prompt information, and recording the content of the program prompt information acquired by demultiplexing.
2. The method of claim 1, wherein before the terminal acquires the program guide information containing the update sequence number sent from the service logical channel, the method further comprises: the front end adds an update sequence number in the program prompt information, and encapsulates the program prompt information containing the update sequence number in a multiplex frame and sends the multiplex frame to the terminal through a service logic channel.
3. The method of claim 2, wherein before adding the update sequence number to the program reminder, the method further comprises: and changing the value of the update sequence number according to the update of the program prompt information.
4. The method according to claim 3, wherein the changing of the value of the update sequence number according to the update of the program prompt information specifically comprises: and adding 1 or subtracting 1 to the value of the update sequence number every time the program prompt information is updated.
5. The method as claimed in any of claims 1 to 4, wherein the update sequence number occupies bits 1 to 6 of a reserved field in the program reminder.
6. A system for obtaining the prompt information of the latest program is characterized in that the system comprises a program prompt information obtaining module, a program prompt information judging module, an update sequence number demultiplexing module, an update sequence number judging module, a program prompt information demultiplexing module and a program prompt information recording module; wherein,
the program prompt information acquisition module is used for acquiring program prompt information which is sent by a service logic channel and contains an update sequence number;
the program prompt information judging module is used for judging whether to acquire the program prompt information sent by the service logic channel for the first time;
the updating sequence number demultiplexing module is used for demultiplexing the updating sequence number in the acquired program prompt information when the program prompt information judging module learns that the program prompt information sent by the service logic channel is not acquired for the first time;
the updating sequence number judging module is used for judging whether the current updating sequence number obtained by demultiplexing is the same as the recorded updating sequence number sent before the same service logic channel;
the program prompt information demultiplexing module is used for demultiplexing the acquired program prompt information when the program prompt information judgment module learns that the program prompt information sent by the service logic channel is acquired for the first time; or, when the update sequence number judging module learns that the current update sequence number is different from the recorded update sequence number, the obtained program prompt information is demultiplexed;
and the program prompt information recording module is used for recording the content of the program prompt information obtained by demultiplexing.
7. The system of claim 6, wherein the program reminder information obtaining module, the program reminder information determining module, the update sequence number demultiplexing module, the update sequence number determining module, the program reminder information demultiplexing module, and the program reminder information recording module are located at a terminal side.
8. The system for acquiring the prompt information of the latest programs according to claim 6 or 7, wherein the system further comprises an update sequence number adding module and a program prompt information sending module; wherein,
the updating sequence number adding module is used for adding an updating sequence number in the program prompt message;
and the program prompt information sending module is used for packaging the program prompt information containing the update sequence number in a multiplexing frame and sending the multiplexing frame to the update sequence number demultiplexing module through a service logic channel.
9. The system according to claim 8, further comprising an update sequence number dereferencing module, configured to change a dereferencing of the update sequence number according to an update of the program guidance information before the update sequence number adding module adds the update sequence number to the program guidance information.
10. The system for acquiring the latest program prompt information according to claim 9, wherein the update sequence number adding module, the program prompt information sending module and the update sequence number dereferencing module are located at a front end side.
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CN101022626A (en) * | 2007-03-21 | 2007-08-22 | 中兴通讯股份有限公司 | Mobile multimedia terminal and updating method for ESG fundamental descriptive list by the same terminal |
CN101087389A (en) * | 2007-06-12 | 2007-12-12 | 中兴通讯股份有限公司 | A transmission and implementation method of prompt message of mobile multi-media broadcast program |
CN101110962A (en) * | 2007-08-30 | 2008-01-23 | 中兴通讯股份有限公司 | Updating detecting method for mobile multimedia broadcast electric service instruction |
CN101212687A (en) * | 2006-12-27 | 2008-07-02 | 中兴通讯股份有限公司 | Electronic service guide transmission method for mobile multimedia broadcast |
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CN101212687A (en) * | 2006-12-27 | 2008-07-02 | 中兴通讯股份有限公司 | Electronic service guide transmission method for mobile multimedia broadcast |
CN101022626A (en) * | 2007-03-21 | 2007-08-22 | 中兴通讯股份有限公司 | Mobile multimedia terminal and updating method for ESG fundamental descriptive list by the same terminal |
CN101087389A (en) * | 2007-06-12 | 2007-12-12 | 中兴通讯股份有限公司 | A transmission and implementation method of prompt message of mobile multi-media broadcast program |
CN101110962A (en) * | 2007-08-30 | 2008-01-23 | 中兴通讯股份有限公司 | Updating detecting method for mobile multimedia broadcast electric service instruction |
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