CN102695095A - Set-top-box-based USB multimedia automatic playing method and USB detection method - Google Patents

Abstract

Translated fromChinese

本发明公开了一种基于机顶盒的USB多媒体自动播放方法及USB检测方法。该方法赖以支持的数字电视机顶盒具有USB接口，能够支持U盘的使用，并且具有USB检测功能，能够检测到U盘，还能够读取U盘中的文件，显示多媒体文件列表；支持遥控器控制功能，能够通过遥控器控制U盘多媒体文件的播放；基于机顶盒的USB多媒体自动播放方法需提供对U盘的精确检测；基于机顶盒的USB多媒体自动播放方法具有很强的外部事件处理能力。通过该方法可实现较强精确性检测和抗干扰性。

The invention discloses a set-top box-based USB multimedia automatic playing method and a USB detection method. The digital TV set-top box supported by the method has a USB interface, can support the use of a USB flash drive, and has a USB detection function, can detect the USB flash drive, can also read files in the USB flash drive, and display a list of multimedia files; support a remote control The control function can control the playback of U disk multimedia files through the remote control; the USB multimedia automatic playback method based on the set-top box needs to provide accurate detection of the U disk; the USB multimedia automatic playback method based on the set-top box has a strong external event processing capability. Through this method, stronger detection accuracy and anti-interference performance can be realized.

Description

Translated fromChinese

一种基于机顶盒的USB多媒体自动播放方法及USB检测方法A set-top box-based USB multimedia automatic playback method and USB detection method

技术领域technical field

本发明涉及多媒体技术领域，尤其涉及一种基于机顶盒的USB多媒体自动播放方法及USB检测方法。The invention relates to the field of multimedia technologies, in particular to a set-top box-based USB multimedia automatic playing method and a USB detection method.

背景技术Background technique

随着数字电视技术的发展以及人们生活水平的提高，人们对数字媒体消费要求提高，面对MP4，智能手机等各种多功能数字产品的出现，以及数字电视本身发展的要求，怎样发展数字电视的多功能性，提高数字电视的娱乐性，交互性，已经成了数字电视发展的现在的任务方向。各种数字产品向个人电脑的功能靠近成为了一种趋势。传统的电视点播，家庭影院等功能已经不能满足用户的需求。With the development of digital TV technology and the improvement of people's living standards, people have higher requirements for digital media consumption. Faced with the emergence of various multi-functional digital products such as MP4 and smart phones, and the requirements for the development of digital TV itself, how to develop digital TV The multi-functionality of digital TV, improving the entertainment and interactivity of digital TV has become the current task direction of digital TV development. It has become a trend that various digital products approach the functions of personal computers. Traditional TV-on-demand, home theater and other functions can no longer meet the needs of users.

使用USB大容量设备作为多媒体载体一方面能直接从电脑上获取多媒体资源，极大方便地解决了多媒体资源来源的问题，途径快捷方便，且省成本；另一方面相当于增加了外围存储容量，同时USB设备是一种非常方便的接口设备。这种播放方式极大地丰富了机顶盒的功能。在机顶盒上还未推行，具有较高的研究价值。Using a USB large-capacity device as a multimedia carrier can directly obtain multimedia resources from the computer, which greatly and conveniently solves the problem of the source of multimedia resources. The method is fast and convenient, and saves costs; At the same time, the USB device is a very convenient interface device. This playback method greatly enriches the functions of the set-top box. It has not yet been implemented on the set-top box, and has high research value.

机顶盒的USB多媒体自动播放方法以USB大容量存储设备，即U盘为多媒体载体，以机顶盒为工具，操作方法为在电脑上把电影下载到U盘中，将U盘插上机顶盒，通过机顶盒检测到U盘，并显示U盘里的文件列表，通过电视机屏幕播放U盘里的多媒体文件。该系统的设计方案新颖，娱乐性和交互性强，并且使用方便。The USB multimedia automatic playback method of the set-top box uses a USB large-capacity storage device, that is, a U disk as a multimedia carrier, and uses a set-top box as a tool. to the U disk, and display the file list in the U disk, and play the multimedia files in the U disk through the TV screen. The design of the system is novel, entertaining and interactive, and easy to use.

现有的基于机顶盒USB的多媒体自动播放方法，其目的是达到通过U盘在电脑上下载多媒体文件，U盘插上机顶盒读取U盘文件，电视机播放U盘文件的这个过程的实现。主要需要实现以下功能：(1)支持USB接口：机顶盒具有USB接口，能够支持U盘的使用；(2)具有USB检测功能：具备USB驱动能够检测U盘；(3)USB文件系统读取功能：读取U盘里面的多媒体文件列表；(4)文件播放功能：能够播放多媒体文件；(5)用户界面：具有良好的用户界面，能够在电视机的界面上显示U盘里的多媒体文件列表；(7)遥控器控制功能：能够通过遥控器控制U盘多媒体文件的播放。Existing multimedia automatic playing method based on set-top box USB, its purpose is to reach download multimedia file on computer by U disk, U disk is plugged into set-top box to read U disk file, the realization of this process of TV playing U disk file. The following functions mainly need to be realized: (1) support USB interface: the set-top box has a USB interface, which can support the use of U disk; (2) has USB detection function: it has USB driver and can detect U disk; (3) USB file system reading function : read the list of multimedia files in the U disk; (4) file playback function: can play multimedia files; (5) user interface: have a good user interface, and can display the list of multimedia files in the U disk on the interface of the TV ; (7) Remote control function: can control the playback of multimedia files in the U disk through the remote control.

现有的基于机顶盒USB的多媒体自动播放方法有较强的功能性，其设计流程图如图1所示。现有技术存在的问题是精确性问题和抗干扰能力问题不能很好的实现。The existing multimedia automatic playing method based on the USB of the set-top box has strong functionality, and its design flow chart is shown in FIG. 1 . The problem existing in the prior art is that the problem of accuracy and the problem of anti-interference ability cannot be well realized.

发明内容Contents of the invention

为了解决上述问题，本发明提出了一种基于机顶盒的USB多媒体自动播放方法及USB检测方法。In order to solve the above problems, the present invention proposes a set-top box-based USB multimedia automatic playing method and a USB detection method.

一种基于机顶盒的USB多媒体自动播放方法，该方法在数字电视机顶盒的软硬件环境中，把USB大容量存储设备，即U盘，作为多媒体的载体，把在电脑上的电影电视剧等多媒体资料下载到U盘中，并将U盘插上数字电视机顶盒，通过数字电视机顶盒检测到U盘，并显示U盘里的文件列表，通过电视机屏幕播放U盘里的多媒体文件；具体流程如下：A method for automatically playing USB multimedia based on a set-top box. In the software and hardware environment of a digital TV set-top box, the method uses a USB large-capacity storage device, that is, a U disk, as a multimedia carrier to download multimedia materials such as movies and TV shows on the computer. to the U disk, and plug the U disk into the digital TV set-top box, the U disk is detected by the digital TV set-top box, and the file list in the U disk is displayed, and the multimedia files in the U disk are played through the TV screen; the specific process is as follows:

Step 1：搭建数字电视机顶盒的软硬件环境，如安装U盘驱动，将U盘插入数字电视机顶盒，数字电视机顶盒对当前插入的U盘进行检测；Step 1: Build the software and hardware environment of the digital TV set-top box, such as installing the U disk drive, inserting the U disk into the digital TV set-top box, and the digital TV set-top box will detect the currently inserted U disk;

Step 2：判断是否检测到U盘，若检测到U盘则直接进入第三步，否则返回继续检测，当超过一定的时间还没检测到U盘则停止检测；Step 2: Judging whether the USB flash drive is detected, if the USB flash drive is detected, go directly to the third step, otherwise return to continue detection, and stop the detection when the USB flash drive is not detected after a certain period of time;

Step 3：检测到U盘之后，进入USB多媒体自动播放系统的主界面，这个界面是该系统的入口界面；Step 3: After the U disk is detected, enter the main interface of the USB multimedia automatic playback system, which is the entry interface of the system;

Step 4：登陆主界面之后，就进入了文件列表显示的界面，该界面上显示了U盘中所有的当前播放器支持的多媒体文件；Step 4: After logging in to the main interface, you will enter the file list display interface, which displays all the multimedia files supported by the current player in the U disk;

Step 5：进入主应用程序核心，该核心对当前的文件是否需要播放进行判断，如果不需要播放则结束，否则进入下一步；Step 5: Enter the core of the main application program, which judges whether the current file needs to be played, and ends if it does not need to be played, otherwise enters the next step;

Step 6：主程序调用播放器播放有播放请求的多媒体文件，在播放文件时对外部事件进行监听；Step 6: The main program calls the player to play the multimedia file with the playback request, and monitors external events when playing the file;

Step 7：判断是否有外部事件请求，如果有外部事件请求处理，则暂停当前播放任务，转去处理外部事件；Step 7: Determine whether there is an external event request, if there is an external event request processing, pause the current playback task, and go to process the external event;

Step 8：外部事件处理完毕后，转回继续处理上次没有播放完的多媒体文件，继续对外部事件进行监听；Step 8: After the external event is processed, switch back to continue processing the multimedia file that was not played last time, and continue to monitor the external event;

Step 9：结束。Step 9: End.

为了能够对U盘进行精确性识别，在step2不断对U盘进行检测，当检测时间超过设定值时，就停止检测，向系统报告。In order to be able to accurately identify the U disk, the U disk is continuously detected in step2. When the detection time exceeds the set value, the detection is stopped and the system is reported.

在step7，对外部事件请求进行判断，根据外部事件请求的优先级来处理外部事件，通过对外部事件的处理，提高了该系统的抗干扰能力，在转去处理外部事件时记住多媒体文件播放的进度，外部事件处理完毕后，按照原先的进度继续播放多媒体文件。In step7, the external event request is judged, and the external event is processed according to the priority of the external event request. Through the processing of the external event, the anti-interference ability of the system is improved, and the multimedia file playback is remembered when the external event is processed. progress, after the external event is processed, continue to play the multimedia file according to the original progress.

在嵌入式操作系统文件系统中，插入USB后，会在多媒体目录下新建一个目录，多媒体目录是嵌入式操作系统下自动挂载的一个目录，所有自动挂载的内容都会被放到这个目录下；插入U盘后，在多媒体目录下新出现的目录的名称即定义的U盘的名称，该目录里的内容就是U盘里文件的内容，具体的流程步骤如下所示：In the embedded operating system file system, after inserting the USB, a new directory will be created under the multimedia directory. The multimedia directory is a directory that is automatically mounted under the embedded operating system, and all automatically mounted content will be placed in this directory. ; After inserting the USB flash drive, the name of the newly-appeared directory under the multimedia directory is the name of the defined USB flash drive, and the content in this directory is the content of the files in the USB flash drive. The specific process steps are as follows:

Step 1：由于USB插入后，会在嵌入式操作系统的文件系统目录下创建一个新的多媒体目录，视为默认目录，获取该目录的索引结构；Step 1: After the USB is inserted, a new multimedia directory will be created under the file system directory of the embedded operating system, which will be regarded as the default directory, and the index structure of the directory will be obtained;

Step 2：通过目录的索引结构定位到多媒体目录项所在位置，读取多媒体目录项的详细信息；Step 2: Locate the location of the multimedia directory item through the index structure of the directory, and read the detailed information of the multimedia directory item;

Step 3：判断目录项是否是空的，如果是空的则说明未检测到U盘的存在，返回到第一步继续检测，否则转入第四步；Step 3: Determine whether the directory item is empty, if it is empty, it means that the existence of the U disk has not been detected, return to the first step to continue detection, otherwise go to the fourth step;

Step 4：判断该目录项是否为U盘目录项，如果是则进入该系统入口界面，如果不是则返回到第二步；Step 4: Determine whether the directory item is a U disk directory item, if yes, enter the system entry interface, if not, return to the second step;

Step 5：U盘检测结束。Step 5: U disk detection ends.

本发明技术方案带来的有益效果：The beneficial effects brought by the technical solution of the present invention:

1、通过该方法可实现较强精确性检测和抗干扰性；1. This method can achieve strong precision detection and anti-interference;

2、当今电视与计算机的融合是数字电视技术发展的一个重要方向，本文的研究顺应了数字电视的发展趋势，具有积极的意义，并为数字电视机顶盒进一步的功能完善和技术进步做出了一定贡献；2. The integration of TV and computer is an important direction for the development of digital TV technology. The research in this paper conforms to the development trend of digital TV and has positive significance. contribute;

3、促进国家数字家庭和数字电视产业的发展，同时也极大降低了数字电视节目和服务提供商和数字电视生产商的开发成本。3. Promote the development of national digital home and digital TV industry, and also greatly reduce the development cost of digital TV programs and service providers and digital TV manufacturers.

附图说明Description of drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

图1是现有技术中基于机顶盒的USB多媒体自动播放方法流程图；Fig. 1 is the flow chart of the USB multimedia automatic playing method based on the set-top box in the prior art;

图2是本发明基于机顶盒的USB多媒体自动播放方法流程图；Fig. 2 is the flow chart of the present invention based on the USB multimedia automatic playing method of set-top box;

图3是本发明中USB检测方法流程图。Fig. 3 is a flow chart of the USB detection method in the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

本发明公开了一种基于机顶盒的USB多媒体自动播放方法，该方法在数字电视机顶盒的软硬件环境中，把USB大容量存储设备，即U盘，作为多媒体的载体，把在电脑上的电影电视剧等多媒体资料下载到U盘中，并将U盘插上数字电视机顶盒，通过数字电视机顶盒检测到U盘，并显示U盘里的文件列表，通过电视机屏幕播放U盘里的多媒体文件。该方法有很强的应用价值。The invention discloses a method for automatically playing USB multimedia based on a set-top box. In the method, in the software and hardware environment of a digital TV set-top box, a USB large-capacity storage device, that is, a U disk, is used as a multimedia carrier to play movies and TV shows on a computer. Wait for the multimedia data to be downloaded to the U disk, and insert the U disk into the digital TV set-top box, detect the U disk through the digital TV set-top box, display the file list in the U disk, and play the multimedia files in the U disk through the TV screen. This method has strong application value.

该方法以数字电视机顶盒为软硬件环境，以U盘为存储设备，将U盘中的多媒体资料在数字电视机顶盒上播放。该方法具有以下特点：In the method, the digital TV set-top box is used as a software and hardware environment, and a U disk is used as a storage device, and the multimedia data in the U disk is played on the digital TV set-top box. This method has the following characteristics:

该方法赖以支持的数字电视机顶盒具有USB接口，能够支持U盘的使用，并且具有USB检测功能，能够检测到U盘，还能够读取U盘中的文件，显示多媒体文件列表；支持遥控器控制功能，能够通过遥控器控制U盘多媒体文件的播放；The digital TV set-top box supported by the method has a USB interface, can support the use of a USB flash drive, and has a USB detection function, can detect the USB flash drive, can also read files in the USB flash drive, and display a list of multimedia files; support a remote control Control function, can control the playback of U disk multimedia files through the remote control;

基于机顶盒的USB多媒体自动播放方法需提供对U盘的精确检测；The USB multimedia automatic playback method based on the set-top box needs to provide accurate detection of the U disk;

基于机顶盒的USB多媒体自动播放方法具有很强的外部事件处理能力。The USB multimedia automatic playing method based on the set-top box has a strong external event processing capability.

一种基于机顶盒的USB多媒体自动播放方法的流程如图2。A flow chart of a method for automatically playing USB multimedia based on a set-top box is shown in FIG. 2 .

具体执行步骤如下：The specific execution steps are as follows:

Step 1：搭建数字电视机顶盒的软硬件环境，如安装U盘驱动，将U盘插入数字电视机顶盒，数字电视机顶盒对当前插入的U盘进行检测；Step 1: Build the software and hardware environment of the digital TV set-top box, such as installing the U disk drive, inserting the U disk into the digital TV set-top box, and the digital TV set-top box will detect the currently inserted U disk;

Step 2：判断是否检测到U盘，若检测到U盘则直接进入第三步，否则返回继续检测，当超过一定的时间还没检测到U盘则停止检测；Step 2: Judging whether the USB flash drive is detected, if the USB flash drive is detected, go directly to the third step, otherwise return to continue detection, and stop the detection when the USB flash drive is not detected after a certain period of time;

Step 3：检测到U盘之后，进入USB多媒体自动播放系统的主界面，这个界面是该系统的入口界面；Step 3: After the U disk is detected, enter the main interface of the USB multimedia automatic playback system, which is the entry interface of the system;

Step 4：登陆主界面之后，就进入了文件列表显示的界面，该界面上显示了U盘中所有的当前播放器支持的多媒体文件；Step 4: After logging in to the main interface, you will enter the file list display interface, which displays all the multimedia files supported by the current player in the U disk;

Step 5：进入主应用程序核心，该核心对当前的文件是否需要播放进行判断，如果不需要播放则结束，否则进入下一步；Step 5: Enter the core of the main application program, which judges whether the current file needs to be played, and ends if it does not need to be played, otherwise enters the next step;

Step 6：主程序调用播放器播放有播放请求的多媒体文件，在播放文件时对外部事件进行监听；Step 6: The main program calls the player to play the multimedia file with the playback request, and monitors external events when playing the file;

Step 7：判断是否有外部事件请求，如果有外部事件请求处理，则暂停当前播放任务，转去处理外部事件；Step 7: Determine whether there is an external event request, if there is an external event request processing, pause the current playback task, and go to process the external event;

Step 8：外部事件处理完毕后，转回继续处理上次没有播放完的多媒体文件，继续对外部事件进行监听；Step 8: After the external event is processed, switch back to continue processing the multimedia file that was not played last time, and continue to monitor the external event;

Step 9：结束。Step 9: End.

为了能够对U盘进行精确性识别，在step2不断对U盘进行检测，当检测时间超过设定值时，就停止检测，向系统报告。在step7，对外部事件请求进行判断，根据外部事件请求的优先级来处理外部事件，通过对外部事件的处理，提高了该系统的抗干扰能力，在转去处理外部事件时记住多媒体文件播放的进度，外部事件处理完毕后，按照原先的进度继续播放多媒体文件。In order to be able to accurately identify the U disk, the U disk is continuously detected in step2. When the detection time exceeds the set value, the detection is stopped and the system is reported. In step7, the external event request is judged, and the external event is processed according to the priority of the external event request. Through the processing of the external event, the anti-interference ability of the system is improved, and the multimedia file playback is remembered when the external event is processed. progress, after the external event is processed, continue to play the multimedia file according to the original progress.

下面对基于机顶盒的USB多媒体自动播放方法流程中的第一步中的U盘检测部分进行更深入一步的阐述，因为U盘的检测关系到多媒体最终的播放，所以是该多媒体播放系统的关键部分。没有一个精确的U盘检测策略，就没有一个性能良好的多媒体自动播放方法与系统。Next, the U disk detection part in the first step in the set-top box-based USB multimedia automatic playback method flow is further elaborated, because the detection of the U disk is related to the final playback of multimedia, so it is the key of this multimedia playback system part. Without an accurate U disk detection strategy, there is no good multimedia automatic playing method and system.

从现有的基于机顶盒的USB多媒体自动播放方法中可知，现有多媒体自动播放系统应用在数字电视机顶盒中时面临着精确性不够的问题。为了解决这一问题，提出了一种检测U盘的方法，如图3所示。It can be known from the existing set-top box-based USB multimedia automatic playback method that the existing multimedia automatic playback system faces the problem of insufficient accuracy when applied in a digital TV set-top box. In order to solve this problem, a method for detecting U disk is proposed, as shown in Figure 3.

判断检测U盘是否插入有多种方法，比如，USB驱动程序在U盘插入和拔出时，都对系统配置文件做了修改。例如U盘驱动程序会在插入或拔出时往其配置文件中做了标记：yes或no，通过查看这个配置文件就不难检测U盘是否插入或拔出了。考虑到系统的实际应用，在这里采取了一种较为简便的检测方法。在USB驱动完整和相关功能完善的基础上，嵌入式操作系统会对插入的USB进行自动挂载操作。具体地说，就是在嵌入式操作系统文件系统中，插入USB后，会在多媒体目录下新建一个目录，多媒体目录是嵌入式操作系统下自动挂载的一个目录，所有自动挂载的内容都会被放到这个目录下，如光盘软盘内容等。插入U盘后，在多媒体目录下新出现的目录的名称即你定义的U盘的名称，该目录里的内容就是U盘里文件的内容。具体的流程步骤如下所示：There are multiple methods for judging and detecting whether the USB flash drive is inserted. For example, the USB driver modifies the system configuration file when the USB flash drive is inserted and pulled out. For example, the U disk driver will mark its configuration file when it is inserted or pulled out: yes or no. It is not difficult to detect whether the U disk is inserted or pulled out by checking this configuration file. Considering the practical application of the system, a relatively simple detection method is adopted here. On the basis of complete USB driver and perfect related functions, the embedded operating system will automatically mount the inserted USB. Specifically, in the file system of the embedded operating system, after inserting the USB, a new directory will be created under the multimedia directory. The multimedia directory is a directory automatically mounted under the embedded operating system, and all automatically mounted content will be Put it in this directory, such as the content of CD-ROM and floppy disk. After inserting the U disk, the name of the new directory that appears under the multimedia directory is the name of the U disk you defined, and the content in this directory is the content of the files in the U disk. The specific process steps are as follows:

Step 1：由于USB插入后，会在嵌入式操作系统的文件系统目录下创建一个新的多媒体目录，视为默认目录，获取该目录的索引结构；Step 1: After the USB is inserted, a new multimedia directory will be created under the file system directory of the embedded operating system, which will be regarded as the default directory, and the index structure of the directory will be obtained;

Step 2：通过目录的索引结构定位到多媒体目录项所在位置，读取多媒体目录项的详细信息；Step 2: Locate the location of the multimedia directory item through the index structure of the directory, and read the detailed information of the multimedia directory item;

Step 3：判断目录项是否是空的，如果是空的则说明未检测到U盘的存在，返回到第一步继续检测，否则转入第四步；Step 3: Determine whether the directory item is empty, if it is empty, it means that the existence of the U disk has not been detected, return to the first step to continue detection, otherwise go to the fourth step;

Step 4：判断该目录项是否为U盘目录项，如果是则进入该系统入口界面，如果不是则返回到第二步；Step 4: Determine whether the directory item is a U disk directory item, if yes, enter the system entry interface, if not, return to the second step;

Step 5：U盘检测结束。Step 5: U disk detection ends.

以上是U盘检测流程图，U盘能否正确的被检测到关系到U盘的多媒体文件在数字电视机顶盒上的识别以及最终的播放，这一步是非常重要的一步。The above is the U disk detection flow chart. Whether the U disk can be detected correctly is related to the identification and final playback of the multimedia files on the U disk on the digital TV set-top box. This step is a very important step.

数字电视技术的不断发展，促进了个人计算机与数字电视联系的加强，使用USB作为多媒体文件传输的媒介，不仅方便快捷，而且节约成本，还丰富了数字电视机顶盒的功能，必定受到广大数字电视用户的青睐，为数字电视深入基层提供了更可靠的保证，具有较高的研究价值。The continuous development of digital TV technology has promoted the strengthening of the connection between personal computers and digital TV. Using USB as a medium for multimedia file transmission is not only convenient and fast, but also saves costs. It also enriches the functions of digital TV set-top boxes and is bound to be popular among digital TV users. It provides a more reliable guarantee for digital TV to go deep into the grassroots, and has high research value.

本发明技术方案带来的有益效果：The beneficial effects brought by the technical solution of the present invention:

1、通过该方法可实现较强精确性检测和抗干扰性；1. This method can achieve strong precision detection and anti-interference;

2、当今电视与计算机的融合是数字电视技术发展的一个重要方向，本文的研究顺应了数字电视的发展趋势，具有积极的意义，并为数字电视机顶盒进一步的功能完善和技术进步做出了一定贡献。2. The integration of TV and computer is an important direction for the development of digital TV technology. The research in this paper conforms to the development trend of digital TV and has positive significance. contribute.

3、促进国家数字家庭和数字电视产业的发展，同时也极大降低了数字电视节目和服务提供商和数字电视生产商的开发成本。3. Promote the development of national digital home and digital TV industry, and also greatly reduce the development cost of digital TV programs and service providers and digital TV manufacturers.

以上对本发明实施例所提供的一种用于社区养老的远程健康监护系统，进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。Above, a remote health monitoring system for community elderly care provided by the embodiment of the present invention has been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used To help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, this specification The content should not be construed as a limitation of the invention.

Claims (4)

1. the USB multimedia automatic broadcasting method based on STB is characterized in that this method is in the hardware environment of DTV STB; The USB mass-memory unit, i.e. USB flash disk is as multimedia carrier; Download to multimedia documents such as film and television play on computers in the USB flash disk, and USB flash disk is plugged DTV STB, detect USB flash disk through DTV STB; And the listed files in the demonstration USB flash disk, play the multimedia file in the USB flash disk through television screen; Idiographic flow is following:

Step 1: build the hardware environment of DTV STB, drive as USB flash disk is installed, USB flash disk is inserted DTV STB, DTV STB detects the USB flash disk of current insertion;

Step 2: judge whether to detect USB flash disk, if detecting USB flash disk then directly got into for the 3rd step, continue to detect otherwise return, then do not stop to detect when also do not detect USB flash disk above the regular hour;

Step 3: detect after the USB flash disk, get into the main interface of USB multimedia automatic playing system, this interface is the Entry Interface of this system;

Step 4: land after the main interface, just got into the listed files interface displayed, shown the multimedia file that all current players are supported in the USB flash disk on this interface;

Step 5: get into the primary application program core, whether this core need be play current file is judged, if need not play then finish, otherwise gets into next step;

Step 6: main program calls the multimedia file that player plays has playing request, when played file, external event is monitored;

Step 7: judged whether the external event request, if the external event Request Processing is arranged, then suspended current playing task, changeed and remove to handle external event;

Step 8: after external event disposes, go back to and continue to handle the multimedia file that did not play last time, continue external event is monitored;

Step 9: finish.

2. the method for claim 1 is characterized in that, in order to carry out accuracy identification to USB flash disk, constantly USB flash disk is detected at step2, when surpass set point detection time, just stops to detect, to System Reports.

3. the method for claim 1 is characterized in that, at step7; Outside event request is judged, handled external event, through processing external event according to the priority of external event request; Improved the antijamming capability of this system; When commentaries on classics goes to handle external event, remember the progress that multimedia file is play, after external event disposes, continue play multimedia files according to original progress.

4. USB detection method; It is characterized in that; In the embedded OS file system, behind the insertion USB, meeting newly-built catalogue under multimedia catalogue; Multimedia catalogue is a catalogue of automatic carry under the embedded OS, and the content of all automatic carries all can be placed under this catalogue; After inserting USB flash disk, the title of the USB flash disk that the title of emerging catalogue promptly defines under multimedia catalogue, the content in this catalogue are exactly the content of file in the USB flash disk, and concrete process step is as follows:

Step 1: owing to after the USB insertion, can under the file system directories of embedded OS, create a new multimedia catalogue, be regarded as default directory, obtain the index structure of this catalogue;

Step 2: the index structure through catalogue navigates to multimedia catalogue item position, reads the details of multimedia catalogue item;

Step 3: judge whether directory entry is empty, if empty then explanation does not detect the existence of USB flash disk, turn back to the first step and continue to detect, otherwise changed for the 4th step over to;

Step 4: judge whether this directory entry is the USB flash disk directory entry, if then get into this system entry interface, if not then turning back to for second step;

Step 5:U dish detects and finishes.

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