TWI396084B - Integrated receiving device and a method for avoiding memory contention of the integrated receiving device - Google Patents

Description

Integrated receiving device and its memory space requisition method

The invention relates to a resource detecting device and a method before downloading an application program, in particular to an integrated receiving device and a memory space requisition method thereof.

As we all know, OCAP (Open Cable Application Platform) defines a common set of application interfaces, data formats and protocols for interactive cable TV devices. It provides an open platform for operators to develop their own needs. Application. However, in a resource-limited set-top box (STB), how to know in advance that the memory is not enough to run the application, there is no suitable method in the existing standards.

In view of the above, it is necessary to provide an integrated receiving device and a memory space requisition method thereof, which can clearly know the shortage of the memory space before the application is downloaded, thereby reducing the waiting time for downloading.

The memory space requisition method includes the following steps: obtaining basic information of an application to be downloaded from a data forwarder; parsing the basic information to obtain a descriptor of the application to be downloaded; and determining, according to the descriptor, whether the memory of the integrated receiving device is There is enough memory space to run the application to be downloaded; if the memory space of the memory is insufficient to run the application to be downloaded, the low priority application bound in the memory is deleted, if the memory space of the memory is still Insufficient, the un-bound low-priority application in the memory is deleted; if the memory has a memory space to run the application to be downloaded, the application is downloaded from the data forwarder; And storing the downloaded application in the memory.

The integrated receiving device includes: an information obtaining module configured to acquire basic information of an application to be downloaded from a data forwarder, parse the basic information to obtain a descriptor of the to-be-downloaded application, and an application control module, configured to The descriptor determines whether the memory has enough memory space to run the to-be-downloaded application, and deletes the low-priority application bound in the memory when the memory space of the memory is insufficient to run the application to be downloaded. If the memory space of the memory is still insufficient, delete the unbound low-priority application in the memory, and determine whether the memory has enough memory space after deleting the unbound low-priority application. And the program downloading module is configured to: when the memory has sufficient memory space to run the application to be downloaded, download the application, and save the downloaded application in the memory in.

Compared with the prior art, the integrated receiving device and its memory space requisition method can download an application from a data forwarder through a cable television network, and can clearly know the shortage of the memory space before the application is downloaded. Reduce the waiting time for downloads.

FIG. 1 is a schematic diagram of an application environment of a preferred embodiment of the memory space expropriation method of the present invention. The method is applied to an Integrated Receiving Device (IRD) 3. The IRD 3 includes a memory space expropriation unit 30 and a memory 32. The memory 32 can be a random memory SDRAM, a program, and a data memory FLASH. In this embodiment, the IRD3 can be a set top box, and the data is transmitted through the cable television network 2 Transponder 1 is connected. In other embodiments, the IRD 3 may be connected to a television. This embodiment is not described in detail herein.

The data forwarder 1 includes an OCAP (Open Cable Application Platform) 10. In this embodiment, there are multiple applications in the OCAP 10, and each application is divided into two parts: AIT/XAIT12 and MPEG2 transport stream 14. Among them, AIT/XAIT12 stores the basic information of the application, such as the document size, priority order of the application, and the state of the application is the bound state or the unbound state. When IRD3 needs to know the basic information of the application, OCAP 10 will transfer the contents of AIT/XAIT12 to IRD3 in the manner of MPEG2 transport stream 14. Here, the AIT can be translated into an Application information table, and the XAIT can be translated into an Extended application information table.

The binding means that the corresponding application has a direct relationship with the currently playing program. Unbound means that the corresponding application is not directly related to the currently playing program. For example, if the currently playing program is a football match and the user needs to know the score of the football match multiple times, the application related to the score is relative to The currently playing football game is the bound application.

The IRD 3 is used to download an application from the OCAP 10 via a cable television network 2, such as an email, video on demand, music, stock or web browser, and the like. Before downloading the application, the memory space requisitioning unit 30 needs to determine the usage amount of the memory 32, and evaluate whether the IRD3 has sufficient memory space to run the application to be downloaded according to the usage amount of the memory 32. For details of the evaluation and requisition method, see The description in Figures 2 to 5.

As shown in FIG. 2, it is a functional module diagram of the memory space requisitioning unit 30 of the present invention. The memory space requisitioning unit 30 includes a message acquiring module 300, an application control module 302, a program downloading module 304, and a program running module 306. The module referred to in the present invention is a computer program segment for performing a specific function, and is more suitable for describing the execution process of the software in the computer than the program. Therefore, the following description of the software is described in the module.

The message obtaining module 300 is configured to obtain basic information of the application to be downloaded from the data forwarder 1 and parse the basic information to obtain a descriptor of the to-be-downloaded application. Specifically, the message acquiring module 300 is from MPEG2. The transport stream 14 obtains basic information of the application to be downloaded stored in the AIT/XAIT 12, and obtains a descriptor of the application to be downloaded from the transport stream 14. As shown by the reference numeral 700 in FIG. 3, the descriptor position of the descriptor of the application to be downloaded is corresponding to the coding position in the basic information, and the descriptor shown in the reference numeral 800 in FIG. 4 records the memory space occupied by the application to be downloaded. the amount.

The application control module 302 is configured to determine, according to the descriptor, whether the memory 32 has sufficient memory space to run the to-be-downloaded application. When the memory space of the memory 32 is insufficient to run the to-be-downloaded application, the application control The module 302 deletes the low priority application bound in the memory 32.

The application control module 302 is further configured to determine whether the memory 32 has enough memory space to run the to-be-downloaded application after deleting the bound low-priority application, and the memory space of the memory 32 When the application to be downloaded is still not enough, the application control module 302 deletes the unbound low-priority application in the memory 32, and determines to delete the unbound low-priority application and save the memory. Body 32 is Is there enough memory space to run the application to be downloaded?

The program downloading module 304 is configured to download the application when the memory 32 has sufficient memory to run the application to be downloaded, and store the downloaded application in the memory 32.

The program running module 306 is configured to run the downloaded application, for example, playing music.

As shown in FIG. 5, it is a flowchart of the operation of the preferred embodiment of the memory space expropriation method of the present invention.

In step S500, the message obtaining module 300 obtains basic information of the application to be downloaded from the data forwarder 1 and parses the basic information. The basic information of the application to be downloaded is stored in the AIT/XAIT 12 of the to-be-downloaded application, and the basic information is acquired by the message acquisition module 300 in the manner of the MPEG2 transport stream 14.

In step S502, the message obtaining module 300 acquires a descriptor of the to-be-downloaded application according to the parsed content, and the descriptor records the amount of memory space that the application to be downloaded needs to occupy.

In step S504, the application control module 302 determines, according to the descriptor, whether the memory 32 has sufficient memory space to run the application to be downloaded. If the memory space of the memory 32 is insufficient to run the application to be downloaded, the process proceeds to step S506; conversely, if the memory space of the memory 32 is sufficient to run the application to be downloaded, the process proceeds directly to step S516.

In step S506, the application control module 302 deletes the low priority application bound in the memory 32.

In step S508, the application control module 302 determines whether the memory 32 has sufficient memory space to run the application to be downloaded after deleting the bound low priority application. If the result of the judgment is that the memory space of the memory 32 is still insufficient to run the application to be downloaded, the process proceeds to step S510; otherwise, if the memory space of the memory 32 is sufficient to run the application to be downloaded, the process directly proceeds to step S516.

In step S510, the application control module 302 pops up a dialog box to prompt the user whether to agree to delete the unbound low priority application in the memory 32. If the user agrees to delete, the process proceeds to step S512. Otherwise, if the user does not agree to delete, the process returns to step S506.

In step S512, the application control module 302 deletes the unbound low priority application in the memory 32.

In step S514, the application control module 302 determines whether the memory 32 has sufficient memory space to run the application to be downloaded after deleting the unbound low priority application. If the result of the determination is yes, the process goes to step S516; otherwise, if the result of the determination is no, the process returns to step S506 until the memory space of the memory 32 is sufficient to run the application to be downloaded.

It should be noted that if there is no application that can be deleted after deleting multiple bound and unbound low priority applications, the application control module 302 needs to return an error message to the user, prompting The memory 32 does not have enough memory space to run the application to be downloaded at this time, and the application download fails.

Step S516, the program download module 304 is from the OCAP application of the data forwarder 1. The program to be downloaded is downloaded from the program 10, and the application is stored in the memory 32, and the program running module 306 runs the application.

It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments thereof The technical solutions are modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention.

1‧‧‧Data Transponder

2‧‧‧Cable Network

3‧‧‧Integrated receiving equipment

10‧‧OCAP

12‧‧‧AIT/XAIT

14‧‧‧MPEG 2 Transport Stream

30‧‧‧Memory space requisition unit

32‧‧‧ memory

300‧‧‧Message Acquisition Module

302‧‧‧Application Control Module

304‧‧‧Program download module

306‧‧‧Program Run Module

S500‧‧‧Receive and parse the basic information of the application

S502‧‧‧Get the descriptor of the application

Does S504, S508, S514‧‧‧ have enough memory space?

S506‧‧‧Delete bound low-priority applications

S510‧‧‧Delete unbound low-priority applications?

S512‧‧‧Delete unbound low priority applications

S516‧‧‧Download, save and run the application

1 is a schematic diagram of an application environment of a preferred embodiment of the memory space expropriation method of the present invention.

2 is a functional block diagram of the memory space requisitioning unit of FIG. 1.

FIG. 3 is a coding position corresponding to a descriptor of an application to be downloaded of the present invention in its basic information.

4 is a schematic diagram of a descriptor of an application to be downloaded according to the present invention.

Figure 5 is a flow chart showing the operation of the preferred embodiment of the memory space expropriation method of the present invention.

S500‧‧‧Receive and parse the basic information of the application

S502‧‧‧Get the descriptor of the application

Does S504, S508, S514‧‧‧ have enough memory space?

S506‧‧‧Delete bound low-priority applications

S510‧‧‧Delete unbound low-priority applications?

S512‧‧‧Delete unbound low priority applications

S516‧‧‧Download, save and run the application

Claims (9)

A memory space requisition method for integrating a receiving device, the method comprising: obtaining basic information of an application to be downloaded from a data forwarder, where the basic information includes an application file size, a priority order, an application state, a binding state, or Unbound state; parsing the basic information to obtain a descriptor of the application to be downloaded; determining, according to the descriptor, whether the memory of the integrated receiving device has enough memory space to run the application to be downloaded; if the memory space of the memory is insufficient To run the application to be downloaded, delete the low-priority application bound in the memory, and if the memory space of the memory is still insufficient, delete the un-bound low-priority application in the memory; The memory has sufficient memory space to run the application to be downloaded, and the application is downloaded from the data forwarder; and the downloaded application is stored in the memory. The memory space expropriation method of claim 1, wherein the step of obtaining basic information of the application to be downloaded from the data forwarder comprises: obtaining AIT/XAIT storage from the MPEG2 transport stream of the application to be downloaded. Basic information about the application to be downloaded. The memory space expropriation method of claim 1, wherein the descriptor records the amount of memory space that the application to be downloaded needs to occupy the memory. The method for requisitioning a memory space according to claim 1, wherein the method further comprises the steps of: Run the downloaded application. The memory space expropriation method according to claim 1, wherein the method further comprises the step of: after deleting the unbound low priority application, if the memory space of the memory is still insufficient to run the to-be-downloaded The application returns the step of deleting the low-priority application bound in the memory. An integrated receiving device for memory space requisition, the integrated receiving device includes: a message acquiring module, configured to acquire basic information of an application to be downloaded from a data forwarder, and parse the basic information to obtain a descriptor of the to-be-downloaded application, The basic information further includes an application file size, a priority order, an application state, a binding state or an unbound state, and an application control module, configured to determine, according to the descriptor, whether the memory has a memory space to run. Download the application. When the memory space of the memory is insufficient to run the application to be downloaded, delete the low-priority application bound in the memory. If the memory space of the memory is still insufficient, delete the unbound in the memory. a low-priority application, and after deleting the unbound low-priority application, determining whether the memory has enough memory to run the to-be-downloaded application; and the program downloading module for When the memory has enough memory space to run the application to be downloaded, download the application and Carrying application stored in the memory. The integrated receiving device of claim 6, wherein the integrated receiving device further comprises a program running module for running the downloaded application. The integrated receiving device of claim 6, wherein the The basic information of the application to be downloaded is stored in the AIT/XAIT of the application to be downloaded, and the basic information is acquired in the manner of an MPEG2 transport stream. The integrated receiving device according to claim 6, wherein the descriptor records the amount of memory space that the application to be downloaded needs to occupy the memory.