CN101827201A - Set-top box and digital television playing system - Google Patents

Set-top box and digital television playing system Download PDF

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Publication number
CN101827201A
CN101827201A CN 201010166862 CN201010166862A CN101827201A CN 101827201 A CN101827201 A CN 101827201A CN 201010166862 CN201010166862 CN 201010166862 CN 201010166862 A CN201010166862 A CN 201010166862A CN 101827201 A CN101827201 A CN 101827201A
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digital
digital signal
multimedia
program
top box
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CN 201010166862
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Chinese (zh)
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罗笑南
黄启法
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中山大学
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Abstract

The invention discloses a set-top box and a digital television playing system. The set-top box comprises a digital signal receiving and transmitting unit, a multimedia program storage unit, a digital signal processing unit and an audio and video digital-to-analog conversion unit, wherein the digital signal receiving and transmitting unit is used for receiving the digital signal of a multimedia program transmitted by a digital television server or transmitting the digital signal of the multimedia program stored in the multimedia program storage unit to the digital television server; the multimedia program storage unit is used for storing the multimedia program transmitted by the digital television server or the multimedia program provided by the set-top box; the digital signal processing unit is used for decrypting the digital signal of the multimedia program received by the digital signal receiving and transmitting unit or encrypting the digital signal of the multimedia program stored in the multimedia program storage unit; and the audio and video digital-to-analog conversion unit is used for converting the digital signal of the multimedia program decrypted by the digital signal processing unit into an analog signal. Therefore, the set-top box has functions of receiving a digital television signal and transmitting the digital television signal at the same time.

Description

一种机顶盒及数字电视播放系统 A set top box and digital television broadcasting system

技术领域 FIELD

[0001] 本发明属于数字电视技术领域,尤其涉及一种机顶盒及数字电视播放系统。 [0001] The present invention belongs to the technical field of digital television, set-top boxes and more particularly to a digital television broadcasting system. 背景技术 Background technique

[0002] 数字家庭是指将各种家庭通信产品、计算机产品、消费类电子产品,按照家庭数字化需求,形成家庭网络,并通过外网接入与社会全方位的信息交互,组成具有家庭娱乐、控制服务和信息功能系统。 [0002] digital home refers to a variety of home communications products, computer products, consumer electronics products, according to the needs of the digital home, forming a home network and external network access through social interaction with a full range of information, consisting of a home entertainment, control services and information systems functions. 数字家庭将实现人类对数字化、智能化生活的需求,改变人们的生活方式,为人们提供方便、安全、智能化、舒适的数字化生活。 Digital home will achieve human needs for digital, intelligent life change people's way of life, to provide convenient, safe and intelligent people, a comfortable digital life. 进入21世纪,数字家庭与数字电视产业的发展更是与国民生活信息化程度息息相关。 In the 21st century, the development of digital TV and the digital home industry is closely related with the degree of information of national life. 而数字电视业务更是数字家庭服务中不可缺少的组成部分,在日益科技化的现代社会,数字电视业务将日益普及应用于广大的家庭。 The Digital TV business is an integral part of the digital home services in an increasingly technology-driven modern society, the growing popularity of digital television services will apply to the majority of families.

[0003] 目前国内的数字电视业务基本上还处于单向的收视阶段,一些省市在先前的数字电视整体转换中,向用户大多配送的是单向机顶盒,数字电视播放系统的播放方式也是单向的。 [0003] At present, the digital television service basically still in the way of viewing stage, a number of provinces and cities in the previous digital TV overall conversion, the user distribution is mostly a one-way set-top boxes, digital television broadcasting system play mode is also single direction. 而单向传输的有线电视网只能实现单向的有线电视节目的传输及收费。 The one-way transmission of cable networks can only achieve one-way cable television programming and transmission charges. 这使数字电视业务的形式单一,不能为广大的用户提供更为广阔的数字电视节目的多向服务,不能满足人们日益扩大的数字电视节目的共享需求。 This allows a single form of digital TV services, not to provide a broader digital TV programs for the majority of users multi-directional service, can not meet the growing needs of people sharing digital television programs.

[0004] 综上可知,现有技术中机顶盒及数字电视播放系统存在缺点,在实际使用上显然存在不便与缺陷,所以有必要加以改进。 [0004] To sum up, there is a disadvantage top boxes and digital television broadcasting system in the prior art, there are clearly problems and disadvantages in practical use, it is necessary to be improved.

发明内容 SUMMARY

[0005] 针对上述的缺陷,本发明的目的在于提供一种机顶盒及数字电视播放系统,以提供同时具有接收数字电视信号以及发送数字电视信号的机顶盒;以及具有双向播放数字电视节目的数字电视播放系统。 [0005] In view of the above drawbacks, an object of the present invention is to provide a set-top box and digital television systems, set-top box also has to provide a digital television signal receiving and transmitting the digital television signal; and a digital television having a bidirectional digital television broadcast program system.

[0006] 为了实现上述目的,本发明提供一种机顶盒,设置于客户端,包括中央处理单元, 用于转换设置于服务器端的数字电视服务器传送的多媒体节目的数字信号,所述机顶盒还包括: [0006] To achieve the above object, the present invention provides a set-top box, the client is provided, including a central processing unit, a program for converting the digital signal provided to the multimedia server transmits the server of a digital television, said set top box further comprises:

[0007] 数字信号接收发送单元,连接于所述中央处理单元,用于接收所述数字电视服务器发送的多媒体节目的数字信号,或者向所述数字电视服务器发送存储于多媒体节目存储单元的多媒体节目的数字信号; [0007] The digital signal receiving transmitting unit, connected to the central processing unit for receiving the digital signal of the digital multimedia television program sent by the server, or send the multimedia program is stored in the storage unit a multimedia program to the digital TV server digital signal;

[0008] 多媒体节目存储单元,连接于所述中央处理单元,用于存储所述数字电视服务器传送的多媒体节目,或者所述机顶盒提供的多媒体节目; [0008] The multimedia program memory unit connected to said central processing unit for storing the multimedia program server transmits the digital television or set-top box provided in the multimedia program;

[0009] 数字信号处理单元,连接于所述中央处理单元,用于将所述数字信号接收发送单元接收的多媒体节目的数字信号进行解密,或者将所述多媒体节目存储单元存储的多媒体节目的数字信号进行加密; [0009] The digital signal processing unit, connected to the central processing unit, the digital signal for the digital signal receiving unit receiving the transmitted multimedia program decrypts the digital multimedia or the program storage unit stores the multimedia program encrypted signal;

[0010] 音视频数模转换单元,连接于所述数字信号处理单元,用于将所述数字信号处理单元解密的所述多媒体节目的数字信号转换为模拟信号。 [0010] audio and video digital to analog conversion means connected to the digital signal processing unit, the multimedia program for the digital signal processing unit decrypts a digital signal into an analog signal. [0011] 进一步的,所述机顶盒还包括: [0011] Further, the set-top box further comprises:

[0012] 点播单元,连接于所述中央处理单元,用于接收所述数字电视服务器传送的多媒体节目点播请求,并对该点播请求进行鉴权;或者 [0012] Demand unit connected to said central processing unit for receiving the digital multimedia on-demand television program server transmits the request and the authentication demand request; or

[0013] 多媒体节目播放单元,连接于所述音视频数模转换单元,用于播放所述音视频数模转换单元将所述多媒体节目的数字信号转换的模拟信号;或者 [0013] Multimedia program playing unit connected to the audio-video digital to analog conversion means for converting the analog signal to a digital signal of the multimedia program to play the audio and video digital to analog conversion means; or

[0014] 因特网连接单元,连接于所述中央处理单元,用于将所述机顶盒连接入因特网;或者 [0014] Internet connection unit, connected to the central processing unit, for the set-top box connected to the Internet; or

[0015] 输入单元,连接于所述中央处理单元,用于向所述多媒体节目存储单元输入多媒体节目信息。 [0015] an input unit connected to said central processing unit for inputting program information to the multimedia display program storage unit.

[0016] 进一步的,所述机顶盒还包括: [0016] Further, the set-top box further comprises:

[0017] 计费单元,连接于所述点播单元,用于在所述点播单元对所述数字电视服务器传送的多媒体节目点播请求鉴权成功后,对所述点播请求进行计费。 [0017] The accounting unit, connected to the on-demand unit for the on-demand unit request after the authentication succeeds said digital media server on-demand television program transmission, the demand request charging.

[0018] 进一步的,所述数字信号接收发送单元包括: [0018] Further, the digital signal receiving-transmitting unit comprises:

[0019] 数字信号接收模块,用于接收所述数字电视服务器发送的多媒体节目的数字信号; [0019] The digital signal receiving means for receiving the digital signals of digital TV multimedia program sent by the server;

[0020] 数字信号发送模块,用于将所述数字信号处理单元加密的存储于所述多媒体节目存储单元的多媒体节目的数字信号,发送到所述数字电视服务器。 [0020] The digital signal transmission module for converting the digital signal processing unit stores the encrypted digital signal of the multimedia program multimedia program storage unit, the server transmits to the digital TV.

[0021] 进一步的,所述多媒体节目存储单元包括: [0021] Further, the multimedia program storage unit comprises:

[0022] 接收数字电视节目存储模块,用于存储所述数字信号接收发送单元接收的所述数字电视服务器发送的数字信号的多媒体节目; Multimedia programs digital signal [0022] reception of digital television programs a storage module for storing the digital signal receiving unit receives the transmitted digital television sent by the server;

[0023] 点播数字电视节目存储模块,用于存储所述机顶盒提供的数字信号的多媒体节目。 [0023] The on-demand digital television program storage module for storing a digital signal of the set-top box provided by a multimedia program.

[0024] 进一步的,所述数字信号处理单元包括: [0024] Further, the digital signal processing unit comprises:

[0025] 数字信号解密模块,用于解密所述数字信号接收发送单元接收的所述数字电视服务器发送的多媒体节目的数字信号; [0025] The digital signal decryption means for decrypting said digital signal is a digital signal multimedia program transmission and reception unit receives the digital television sent by the server;

[0026] 数字信号加密模块,用于加密所述多媒体节目存储单元存储的多媒体节目播放的数字信号。 [0026] The encryption module is a digital signal, a digital signal storage unit stores the multimedia program is used to encrypt the multimedia program is played.

[0027] 进一步的,所述音视频数模转换单元包括: [0027] Further, the audio-video digital to analog conversion means comprises:

[0028] 音频数模转换模块,用于将所述数字信号处理单元解密的音频数字信号转换为音频模拟信号; [0028] Audio converter module for converting the digital audio signal of the digital signal processing unit into an audio analog decrypted signal;

[0029] 视频数模转换模块,用于将所述数字信号处理单元解密的视频数字信号转换为视频模拟信号。 [0029] Video converter module for converting a digital video signal of the digital signal processing unit into a decrypted analog video signal.

[0030] 进一步的,所述点播单元包括: [0030] Further, the on-demand unit comprises:

[0031] 注册模块,用于接收其他用户通过所述数字电视服务器发送的,注册为所述多媒体节目存储单元存储的多媒体节目收看用户的请求,并对所述其他用户的请求进行记录; [0031] The registration module is configured to receive other user via the digital television transmission server registered as a program storage unit stores the multimedia multimedia program viewing request of a user, the other user requests and recorded;

[0032] 点播请求模块,用于接收所述数字电视服务器传送的其他用户点播所述多媒体节目存储单元存储的多媒体节目请求; [0032] The demand request means for receiving the digital television other users demand server transmits the multimedia program storage unit stores the multimedia program request;

[0033] 鉴权模块,用于根据所述注册模块的所述记录,对所述点播请求模块接收的所述多媒体节目的点播请求进行鉴权。 The on-demand multimedia program [0033] authentication module, according to the recording of the registration module, the module receives a request for on-demand request for authentication.

5[0034],所述多媒体节目播放单元包括: 5 [0034] the multimedia playback program unit comprises:

[0035] 音频播放模块,用于播放所述音视频数模转换单元将所述音频数字信号转换的音频模拟信号; [0035] The audio playback module configured to play the audio and video digital to analog conversion means the analog audio signal converted digital audio signal;

[0036] 视频播放模块,用于播放所述音视频数模转换单元将所述视频数字信号转换的视频模拟信号。 [0036] The video player module for playing the audio video digital to analog conversion means the analog video signal converted digital video signal.

[0037] 为了实现本发明的另一发明目的,本发明还提供了一种利用上述机顶盒实现数字电视播放的系统,所述系统包括数字电视服务器以及多个所述机顶盒,所述机顶盒包括: [0037] In order to achieve another object of the present invention, the present invention also provides a system using the digital television set-top box, the system comprising a server and a plurality of digital television set-top box, the set-top box comprising:

[0038] 数字信号接收发送单元,连接于所述中央处理单元,用于接收所述数字电视服务器发送的多媒体节目的数字信号,或者向所述数字电视服务器发送存储于多媒体节目存储单元的多媒体节目的数字信号; [0038] a digital transmission signal receiving means connected to said central processing unit, for receiving a digital signal of the digital multimedia television program sent by the server, or send the multimedia program is stored in the storage unit a multimedia program to the digital TV server digital signal;

[0039] 多媒体节目存储单元,连接于所述中央处理单元,用于存储所述数字电视服务器传送的多媒体节目,或者所述机顶盒提供的多媒体节目; [0039] Multimedia program memory unit connected to said central processing unit for storing the multimedia program server transmits the digital television or set-top box provided in the multimedia program;

[0040] 数字信号处理单元,连接于所述中央处理单元,用于将所述数字信号接收发送单元接收的多媒体节目的数字信号进行解密,或者将所述多媒体节目存储单元存储的多媒体节目的数字信号进行加密; [0040] The digital signal processing unit, connected to the central processing unit, the digital signal for the digital signal receiving unit receiving the transmitted multimedia program decrypts the digital multimedia or the program storage unit stores the multimedia program encrypted signal;

[0041] 音视频数模转换单元,连接于所述数字信号处理单元,用于将所述数字信号处理单元解密的所述多媒体节目的数字信号转换为模拟信号。 [0041] audio and video digital to analog conversion means connected to the digital signal processing unit, the multimedia program for the digital signal processing unit decrypts a digital signal into an analog signal.

[0042] 本发明通过将机顶盒设置为至少包括中央处理单元、数字信号接收发送单元、多媒体节目存储单元、数字信号处理单元以及音视频数模转换单元的结构,所述数字信号处理单元不但可以将所述数字信号接收发送单元接收的数字电视节目的数字信号进行解密处理,还可以将该机顶盒提供的数字电视节目的数字信号进行加密处理,待接收到其他客户端的用户请求后,将机顶盒提供的数字电视节目的数字信号发送到数字电视服务器,由该数字电视服务器将该加密后的数字电视节目信号的数字信号传送到其他客户端进行播放。 [0042] The present invention is not only provided by the set-top box may include at least the structure, the digital signal processing unit the central processing unit, receiving the digital signal transmitting unit, a multimedia program storage unit, a digital signal processing unit and the DAC unit of the audio and video the digital signal receiving unit receives the transmission of digital television program decrypts the digital signal, a digital signal may be a digital television set-top box to provide the program further encrypts, after receiving a user request after the other client, set-top box provided digital signals are transmitted to the digital television program TV server, transmitting digital signals of digital television program signal after the encrypted digital television by the server to the other clients to play. 因此,本发明提供的机顶盒具有双向传送及播放数字电视节目的功能。 Accordingly, the present invention provides a set-top box has a function of bidirectional transmission of a digital television program and play. 另外,本发明提供的利用所述的机顶盒实现数字电视播放的数字电视播放系统,也实现了不仅其服务器端为用户提供数字电视节目的功能,还能够实现在客户端提供数字电视节目的功能。 Further, by using the set-top box implementation of the present invention provides a digital television system for digital television broadcasting, which is also achieved not only provides users with the server function of digital TV programs, but also provide the functionality to achieve a digital television program in the client. 因此,优化了数字电视节目的业务的服务状况,为数字电视的发展提供了更广阔的技术桥梁。 Therefore, to optimize the service status of the digital television program services, to provide a broader technological bridge for the development of digital TV.

附图说明 BRIEF DESCRIPTION

[0043] 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。 [0043] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0044] 图1是本发明提供的机顶盒的结构示意图; [0044] FIG. 1 is a schematic view of the present invention provides a set-top box;

[0045] 图2是本发明一个实施例提供的机顶盒的结构示意图; [0045] FIG. 2 is a schematic structural diagram of a set-top box according to an embodiment of the present invention;

[0046] 图3是本发明另一个实施例提供的机顶盒的结构示意图; [0046] FIG. 3 is a schematic structural diagram of a set top box provided by a further embodiment of the present invention;

[0047] 图4是本发明又一个实施例提供的机顶盒的结构示意图; [0047] The present invention also FIG. 4 is a schematic structural diagram of the embodiment of the set-top box;

[0048] 图5是本发明再一个实施例提供的机顶盒的结构示意图; [0048] FIG. 5 is a schematic structural diagram of another set-top box of the present invention;

[0049] 图6是本发明提供数字电视播放的系统的组成示意图。 [0049] FIG. 6 is a schematic diagram illustrating a digital television broadcast system, the present invention provides.

6具体实施方式 6 DETAILED DESCRIPTION

[0050] 为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。 [0050] To make the objectives, technical solutions and advantages of the present invention will become more apparent hereinafter in conjunction with the accompanying drawings and embodiments of the present invention will be further described in detail. 应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。 It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention.

[0051] 本发明的基本思想是:将机顶盒设置为至少包括中央处理单元、数字信号接收发送单元、多媒体节目存储单元、数字信号处理单元以及音视频数模转换单元的结构,通过数字信号接收发送单元接收和发送数字电视节目信号,实现机顶盒的双向传送及播放数字电视节目的功能。 [0051] The basic idea of ​​the invention is: a set top box is provided comprising at least a structural central processing unit, the digital signal transmission and reception unit, the multimedia program storage unit, a digital signal processing unit and the DAC unit of audio and video, receiving the transmitted digital signal unit receiving and transmitting digital television signals, implement the functions of the set top box and displays the bidirectional transmission of digital TV programs.

[0052] 参见图1及图6,本发明提供了一种机顶盒1,该机顶盒1设置于客户端,包括中央处理单元11,用于转换设置于服务器端的数字电视服务器2传送的多媒体节目的数字信号,机顶盒1还包括: [0052] Referring to FIG. 1 and FIG. 6, the present invention provides a set top box, the set-top box 1 is provided on the client, including digital multimedia program transmitted central processing unit 11, is provided on the server side for converting a digital TV server 2 signal, the set top box 1 further comprising:

[0053] 数字信号接收发送单元12,连接于中央处理单元11,用于接收数字电视服务器2 发送的多媒体节目的数字信号,或者向数字电视服务器2发送存储于多媒体节目存储单元13的多媒体节目的数字信号; [0053] The transmission unit 12 receives the digital signal, connected to the central processing unit 11, a digital multimedia signal receiving digital television programs transmitted from the server 2, the server 2 or the digital television transmission is stored in the multimedia program storage unit 13 of the multimedia program Digital signal;

[0054] 多媒体节目存储单元13,连接于中央处理单元11,用于存储数字电视服务器2传送的多媒体节目,或者机顶盒1提供的多媒体节目; [0054] Multimedia program storage unit 13, connected to the central processing unit 11, for storing digital multimedia television programs transmitted by the server 2, or set-top box 1 provides multimedia programs;

[0055] 数字信号处理单元14,连接于中央处理单元11,用于将数字信号接收发送单元12 接收的多媒体节目的数字信号进行解密,或者将多媒体节目存储单元13存储的多媒体节目的数字信号进行加密; [0055] The digital signal processing unit 14, connected to the central processing unit 11, a digital signal for digital signal receiving unit 12 receives the transmission of multimedia programs to decrypt a multimedia program or the digital signal multimedia program storage unit 13 stores is encryption;

[0056] 音视频数模转换单元15,连接于数字信号处理单元14,用于将数字信号处理单元14解密的多媒体节目的数字信号转换为模拟信号。 [0056] audio and video digital to analog conversion unit 15, connected to the digital signal processing unit 14 for digital signal processing unit 14 decrypts the multimedia program a digital signal into an analog signal.

[0057] 在本发明中提供的机顶盒1是具有双向功能,即该机顶盒1既可以将数字电视服务器2发送的多媒体节目的数字信号转换为模拟信号,为目前广大电视用户播放数字电视节目使用;同时还可以向其他客户端的用户发送多媒体节目的数字信号,为其他客户端的用户收看。 [0057] The set-top box provided in the present invention 1 is a two-way function, i.e., the set-top box 1 may be multimedia program digital TV server 2 transmits a digital signal to an analog signal, used for the current majority of TV user to play digital television program; but also can transmit the digital multimedia signal to a user program for other clients, other clients viewing the user.

[0058] 参见图2,在本发明的一个实施例中,数字信号接收发送单元12包括: [0058] Referring to Figure 2, in one embodiment of the present invention, the digital signal transmission and reception unit 12 comprises:

[0059] 数字信号接收模块121,用于接收数字电视服务器2发送的多媒体节目的数字信号;数字信号接收模块121负责接收数字电视服务器2播放的数字电视节目,当然该节目可以是在服务器端,由数字电视服务器2提供的多媒体节目,也可以是其他客户端通过数字电视服务器2向机顶盒1提供的多媒体节目。 [0059] The digital signal receiving module 121, a digital multimedia signal receiving digital television programs transmitted from the server 2; digital signal receiving module 121 is responsible for receiving a digital television broadcast server 2 digital television programs, the program may of course be on the server side, digital TV server 2 provides multimedia programs, can also be a multimedia program by other clients digital TV set-top boxes to provide server 2 1. 这些多媒体节目通过是已经加密的数字信号, 包括音频数字信号的加密或者视频数字信号的加密,以及视频、音频数字信号均加密。 The multimedia program that has been encrypted by a digital signal, comprising encrypting the encrypted digital video signal or digital audio signal and video, digital audio signal is encrypted. 数字信号接收模块121接收该多媒体节目的数字信号后,传送到中央处理单元11,若用户设置为将该多媒体节目存储,则中央处理单元11将该多媒体节目将存储于多媒体节目存储单元13,否则将由音视频数模转换单元15对该多媒体节目进行数/模转换。 Digital signal receiving module 121 receives the digital signal of the multimedia program is transmitted to the central processing unit 11, if the user set the multimedia program is stored, the central processing unit 11 display the program stored in the multimedia program storage unit 13, or digital to analog conversion by the audio and video unit of the multimedia program 15 digital / analog conversion.

[0060] 数字信号发送模块122,用于将数字信号处理单元14加密的存储于多媒体节目存储单元13的多媒体节目的数字信号,发送到数字电视服务器2。 [0060] The digital signal transmitting module 122 for digital signal processing unit 14 stores the encrypted digital signal multimedia programming multimedia program storage unit 13, the server 2 transmits to the digital TV. 在机顶盒1作为多媒体节目提供者时,为了保证提供的利益,其提供的多媒体节目的数字信号需要加密处理,并且加密的多媒体节目的数字信号是由数字信号发送模块122向外发送的。 When the set top box 1 as a provider of a multimedia program, in order to ensure the benefit provided by the digital signal which provides the required encrypted multimedia programs, multimedia programs and the encrypted digital signal is transmitted by digital signal transmission module 122 outwardly. [0061] 对于多媒体节目存储单元13,其包括: [0061] For a multimedia program storage unit 13, which comprises:

[0062] 接收数字电视节目存储模块131,用于存储数字信号接收发送单元12接收的数字电视服务器2发送的数字信号的多媒体节目;在播放数字信号的电视节目的同时,该节目资源是可以被存储在接收数字电视节目存储模块131中,当然,用户也可以根据自己的需要只是实时播放该电视节目,而不将该电视节目资源存储于接收数字电视节目存储模块131。 [0062] receiving a digital television program storage module 131, a multimedia program from the digital signals stored digital signal receiving unit 12 receives transmission digital TV server 2 is sent; while the television programs of the digital signal, the program can be resource receive digital TV programs stored in the storage module 131, of course, users can only play the real-time TV programs according to their needs, rather than the TV program source stored in the reception of digital television programs storage module 131.

[0063] 点播数字电视节目存储模块132,用于存储所述机顶盒1提供的数字信号的多媒体节目。 [0063] The demand digital television program storage module 132, the set-top box for storing the digital signal provided by a multimedia program. 在机顶盒1作为多媒体数字电视节目的提供者时,该机顶盒1的点播数字电视节目存储模块132存储有相应的多媒体数字电视节目。 When the set top box 1 as a provider of multimedia digital television program, the set-top box 1 demand digital television program storage module 132 storing the corresponding multimedia digital TV programs. 该节目的形式多种多样,可以是新闻、 电视剧、电影;也可以是FLASH动画、广播节目;或者是电子书籍等。 The program is varied form, may be news, TV shows, movies; can also be a FLASH animation, broadcast programs; or e-books.

[0064] 优选的,在本实施例中,数字信号处理单元14包括:数字信号解密模块141,用于解密数字信号接收发送单元12接收的数字电视服务器2发送的多媒体节目的数字信号。 [0064] Preferably, in the present embodiment, the digital signal processing unit 14 comprises: a digital signal decryption module 141 for decrypting the digital signal multimedia program transmitted digital signal receiving unit 12 receives a digital television transmission server 2. 中央处理单元11将数字信号接收模块121接收的多媒体节目的数字信号,发送到数字信号解密模块141进行解密。 The central processing unit 11 digital signal from the digital signal receiving module 121 receives the multimedia program, and transmits the digital signal to the decryption module 141 to decrypt.

[0065] 一般情况下数字电视服务器2发送的多媒体节目的数字信号都是经过加扰处理的,数字信号解密模块141根据预先约定的解扰方式,对数字信号接收发送单元12接收的数字电视服务器2发送的多媒体节目的数字信号进行解密,还原多媒体节目。 [0065] Digital signals are TV server 2 transmits the multimedia program is scrambled treated under normal circumstances, the digital signal descrambled decryption module 141 of the pre-agreed manner, the digital signal transmission and reception unit 12 of the digital television receiver server 2 a digital signal transmitted multimedia program to decrypt restored multimedia program.

[0066] 数字信号加密模块142,用于加密多媒体节目存储单元13存储的多媒体节目播放的数字信号。 [0066] The digital signal encryption module 142, a multimedia program for encrypting the digital signal storage unit 13 stores playback of multimedia programs. 在机顶盒1向其他客户端的用户提供多媒体节目时,其多媒体节目播放的数字信号需要进行加密处理,中央处理单元11将多媒体节目存储单元13存储的机顶盒1向其他客户端的用户提供多媒体节目,发送到数字信号加密模块142,并控制该数字信号加密模块142对数字视频信号和/或数字音频信号进行加密。 Providing a multimedia program to another user of the client set-top box 1, which is a digital signal multimedia program is played needs to be encrypted, the central processing unit 11 display the program storage unit 13 stores the set top box 1 to another user of the client to provide a multimedia program is transmitted to the digital signal encryption module 142, and controls the digital signal encryption module 142 of the digital video signals and / or digital audio signal is encrypted. 加密算法包括加密运动矢量算法、 DCT块系数分层加密算法等多种加密算法。 It includes a plurality of encryption algorithm encryption algorithm motion vector algorithms, DCT coefficients of the block hierarchical encryption algorithm.

[0067] 另外,在本实施例中,音视频数模转换单元15包括:音频数模转换模块151,用于将数字信号处理单元14解密的音频数字信号转换为音频模拟信号;视频数模转换模块152,用于将数字信号处理单元14解密的视频数字信号转换为视频模拟信号。 [0067] Further, in the present embodiment, the audio and video digital to analog conversion means 15 comprises: an audio digital to analog conversion module 151 for converting the digital audio signal from the digital signal processing unit 14 into an audio analog decrypted signal; video DAC module 152, a digital video signal for the digital signal processing unit 14 converts the decrypted analog video signal. 由于目前广大用户使用的电视还是模拟信号的电视,因此本发明提供的音频数模转换模块151可以将解密后的音频数字信号转换为音频模拟信号,适于模拟信号的电视播放。 Since the digital audio signal currently TV or an analog TV signal, the majority of users, and therefore an audio digital to analog conversion module 151 provides the present invention may be decrypted into an audio analog signal, an analog television broadcast signal is adapted. 而视频数模转换模块152则是将解密后的视频数字信号转换为视频模拟信号。 And the video signal is converted into digital video digital to analog conversion module 152 is sucked decrypted analog video signal.

[0068] 参见图3,在本发明的另一个实施例中,机顶盒1还包括: [0068] Referring to Figure 3, another embodiment of the present invention, the set top box 1 further comprising:

[0069] 点播单元16,连接于中央处理单元11,用于接收数字电视服务器2传送的多媒体节目点播请求,并对该点播请求进行鉴权;或者 [0069] The on-demand unit 16 is connected to the central processing unit 11, a request for a multimedia program on demand received digital television transmission server 2, and the on-demand authentication request; or

[0070] 多媒体节目播放单元17,连接于音视频数模转换单元15,用于播放所述音视频数模转换单元15将所述多媒体节目的数字信号转换的模拟信号;或者 [0070] Display unit 17 displays a program connected to the audio and video digital to analog conversion unit 15 for converting the analog signal from the digital signal of the audio-video playback digital to analog conversion unit 15 of the multimedia program; or

[0071] 因特网连接单元18,连接于中央处理单元11,用于将机顶盒1连接入因特网;或者 [0071] The Internet connecting unit 18, connected to the central processing unit 11, the set top box for connecting to the Internet; or

[0072] 输入单元19,连接于中央处理单元11,用于向多媒体节目存储单元13输入多媒体T1目{曰息。 [0072] The input unit 19 is connected to the central processing unit 11, T1 for inputting a multimedia message to said destination {multimedia program storage unit 13.

[0073] 参见图5,在该实施例中,本发明的机顶盒1包括了一点播单元16,而优选的点播单元16包括:[0074] 注册模块161,用于接收其他用户通过数字电视服务器2发送的,注册为多媒体节目存储单元13存储的多媒体节目收看用户的请求,并对所述其他用户的请求进行记录; [0073] Referring to Figure 5, in this embodiment, the set top box according to the present invention comprises a demand unit 16, and preferably on-demand unit 16 comprises: [0074] The registration module 161 for receiving digital television by other users server 2 transmitted, registered as a multimedia program storage unit 13 stores the multimedia program viewing request of a user, the other user requests and recorded;

[0075] 点播请求模块162,用于接收数字电视服务器2传送的其他用户点播多媒体节目存储单元13存储的多媒体节目请求; [0075] The demand request module 162, for receiving digital television transmission server 2 other users demand multimedia program storage unit 13 stores a multimedia program request;

[0076] 鉴权模块163,用于根据注册模块161的所述记录,对点播请求模块162接收的所述多媒体节目的点播请求进行鉴权。 The on-demand multimedia program [0076] authentication module 163, according to the recording module 161 to register, a request for on-demand module 162 receives the request for authentication.

[0077] 在机顶盒1作为数字电视节目提供者时,为了保证提供的利益,需要设置一个注册鉴权机制,其他客户端的用户若需要观看多媒体节目存储单元13存储的多媒体节目;需要向注册模块161请求注册为其用户,注册的信息包括用户名,用户密码等一些相关信息。 [0077] When the set top box 1 as a provider of digital TV programs, in order to ensure the benefit provided by the need to set up a registration authentication mechanism, other clients user if desired viewing multimedia program storage unit 13 stores multimedia program; required to registration module 161 requests to register its users, registration information includes some information username, password and so on. 注册完成后,在其他客户端的用户通过数字电视服务器2传送点播多媒体节目存储单元13 存储的多媒体节目请求;点播请求模块162接收该请求,鉴权模块163根据注册模块161的所述记录,对点播请求模块162接收的所述多媒体节目的点播请求进行鉴权。 After registration, the user of the other client server 2 transmits a digital television program on-demand multimedia display program storage unit 13 stores a request; demand request module 162 receives the request, the authentication module 163 according to the registration of the recording module 161, on-demand on-demand program requests the multimedia module 162 receives a request for authentication. 在鉴权成功后,由数字信号发送模块122将数字信号处理单元14加密的,存储于多媒体节目存储单元13的多媒体节目的数字信号发送到数字电视服务器2 ;再由该数字电视服务器2为其他客户端的用户传播该多媒体节目。 After the authentication succeeds, the digital signal transmitting module 122 to 14 encrypted by the digital signal processing unit, the digital signal is stored in a multimedia transmitting multimedia programs program storage unit 13 to the digital TV server 2; then from the other digital TV server 2 user client spread of the multimedia program.

[0078] 参见图4,在本发明的再一个实施例中,计费单元20连接于点播单元16,用于在点播单元16对数字电视服务器2传送的多媒体节目点播请求鉴权成功后,对所述点播请求进行计费,实现了机顶盒1的双向传输转换多媒体节目的功能。 [0078] Referring to Figure 4, in a further embodiment of the present invention embodiment, the charging unit 20 is connected to the unit 16 on demand, the demand for the multimedia unit 16 transmits digital television programming on demand server 2 requests the authentication succeeds, for charging said demand request, a set-top box to achieve a two-way transmission of multimedia programs conversion function.

[0079] 参见图5,在本发明的一个实施例中,提供的机顶盒1包括了多媒体节目播放单元17,多媒体节目播放单元17包括:音频播放模块171,用于播放音视频数模转换单元15将所述音频数字信号转换的音频模拟信号;视频播放模块172,用于播放音视频数模转换单元15将所述视频数字信号转换的视频模拟信号。 [0079] Referring to Figure 5, in one embodiment of the present invention, the set-top box 1 provides a multimedia program including a playback unit 17, a multimedia play unit 17 the program comprising: an audio playback module 171 for playing audio and video digital to analog conversion means 15 an analog audio signal of the audio digital signal conversion; video play module 172 for playing audio and video digital to analog conversion means 15 to the analog video signal converted digital video signal. 所以通过该单元,可以播放音视频数模转换单元15将所述多媒体节目的数字信号转换的模拟信号;其中包括了音频模拟信号及音频数字信号。 Therefore, by this means, you can play audio and video digital to analog conversion unit 15 converts the analog signal from the digital signal of the multimedia program; which includes an audio analog signal and a digital audio signal. 即将现有的电视机与机顶盒1制作为一体机。 About to existing television set-top box 1 production as one machine.

[0080] 而机顶盒1还包括了因特网连接单元18,利用该单元可以实现机顶盒1的上网功能,更一步扩展了机顶盒1的功能。 [0080] and the set top box 1 further comprises an Internet connection unit 18, the unit may be implemented using Internet-enabled set-top box 1, but further extends the functionality of a set top box. 用户可以利用机顶盒1提供的其他操作终端,如鼠标、 键盘;或者遥控器实现网上冲浪。 Users can use other operation terminal to provide a set top box, such as a mouse, a keyboard; surf the Web or the remote controller.

[0081] 输入单元19连接于中央处理单元11,其包括了多种通信接口,例如,USB接口、 1394 接口、射频接口、1284接口,802. 11 接口、IR(Infrared,红外线),接口、RS_232 接口等, 通过这些通信接口可以向多媒体节目存储单元13输入多媒体节目信息。 [0081] The input unit 19 is connected to the central processing unit 11, which includes a variety of communication interfaces, e.g., USB interface, a 1394 interface, RF interface, the interface 1284, 802.11 interfaces, IR (Infrared, IR), interfaces, RS_232 interface, the program can enter the multimedia information through the communication interface to a multimedia program storage unit 13.

[0082] 在本发明中,数字信号处理单元14为一数字信号处理器。 [0082] In the present invention, the digital signal processing unit 14 is a digital signal processor. 该数字信号处理单元14 包括音/视频输入接口、音/视频输出接口、存储器输入接口、PCKPeripheral Component Interconnect,外部部件互连)接口、因特网网络连接接口。 The digital signal processing unit 14 comprises a audio / video input interface, audio / video output interface, a memory input interface, PCKPeripheral Component Interconnect, Peripheral Component Interconnect) interface, an Internet network connection interface.

[0083] 参见图6,本发明还提供了一种利用上述多个实施例提供的机顶盒1实现数字电视播放的系统3,所述系统包括数字电视服务器2以及多个机顶盒1,机顶盒1还包括: [0083] Referring to Figure 6, the present invention also provides a set-top box system 1 according to an embodiment 3 of digital television broadcasting, the system comprising a plurality of digital television set-top box 1 and the server 2 using the plurality of set top box 1 further comprises :

[0084] 数字信号接收发送单元12,连接于中央处理单元11,用于接收数字电视服务器2 发送的多媒体节目的数字信号,或者向数字电视服务器2发送存储于多媒体节目存储单元13的多媒体节目的数字信号; [0084] The transmission unit 12 receives the digital signal, connected to the central processing unit 11, a digital multimedia signal receiving digital television programs transmitted from the server 2, the server 2 or the digital television transmission is stored in the multimedia program storage unit 13 of the multimedia program Digital signal;

[0085] 多媒体节目存储单元13,连接于中央处理单元11,用于存储数字电视服务器2传送的多媒体节目,或者机顶盒1提供的多媒体节目; [0085] Multimedia program storage unit 13, connected to the central processing unit 11, for storing digital multimedia television programs transmitted by the server 2, or set-top box 1 provides multimedia programs;

[0086] 数字信号处理单元14,连接于中央处理单元11,用于将数字信号接收发送单元12 接收的多媒体节目的数字信号进行解密,或者将多媒体节目存储单元13存储的多媒体节目的数字信号进行加密; [0086] The digital signal processing unit 14, connected to the central processing unit 11, a digital signal for digital signal receiving unit 12 receives the transmission of multimedia programs to decrypt a multimedia program or the digital signal multimedia program storage unit 13 stores is encryption;

[0087] 音视频数模转换单元15,连接于数字信号处理单元14,用于将数字信号处理单元14解密的多媒体节目的数字信号转换为模拟信号。 [0087] audio and video digital to analog conversion unit 15, connected to the digital signal processing unit 14 for digital signal processing unit 14 decrypts the multimedia program a digital signal into an analog signal.

[0088] 该数字电视播放的系统3中的机顶盒1的其他具体结构,在上述多个实施例中均有描述,在此不再赘述。 [0088] Other specific configuration of a digital television set-top box 1 the broadcast system 3, the above-described embodiments are described in the plurality of embodiments, not described herein again.

[0089] 综上所述,本发明通过将机顶盒设置为至少包括中央处理单元、数字信号接收发送单元、多媒体节目存储单元、数字信号处理单元以及音视频数模转换单元的结构,所述数字信号处理单元不但可以将所述数字信号接收发送单元接收的数字电视节目的数字信号进行解密处理,还可以将该机顶盒提供的数字电视节目的数字信号进行加密处理,待接收到其他客户端的用户请求后,将机顶盒提供的数字电视节目的数字信号发送到数字电视服务器,由该数字电视服务器将该加密后的数字电视节目信号的数字信号传送到其他客户端进行播放。 [0089] In summary, the present invention, by setting the set top box structure including at least a central processing unit, receiving the digital signal transmitting unit, a multimedia program storage unit, a digital signal processing unit and the DAC unit of audio and video, the digital signal post-processing unit may be not only a digital signal of the digital transmission signal receiving unit receives a digital television program is decrypted, the encryption process can also be the digital signal of a digital set-top box provided by a television program to be received by another user of the client requests the transmission digital signal to provide digital set-top box to the digital TV television program server, transmitting digital signals of digital television program signal after the encrypted digital television by the server to the other clients to play. 因此,本发明提供的机顶盒具有双向传送及播放数字电视节目的功能。 Accordingly, the present invention provides a set-top box has a function of bidirectional transmission of a digital television program and play. 另外,本发明提供的利用所述的机顶盒实现数字电视播放的数字电视播放系统,也实现了不仅其服务器端为用户提供数字电视节目的功能,还能够实现在客户端提供数字电视节目的功能。 Further, by using the set-top box implementation of the present invention provides a digital television system for digital television broadcasting, which is also achieved not only provides users with the server function of digital TV programs, but also provide the functionality to achieve a digital television program in the client.

因此,优化了数字电视节目的业务的服务状况,为数字电视的发展提供了更广阔的技术桥 Therefore, to optimize the service status of the digital television program services, to provide a broader technological bridge for the development of digital television

M M

TTC。 TTC.

[0090] 当然,本发明还可有其它多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 [0090] Of course, the present invention may have a variety of other embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and variations according to the present invention, but these corresponding changes and variations should fall within the scope of the appended claims.

Claims (10)

  1. 一种机顶盒,设置于客户端,包括中央处理单元,用于转换设置于服务器端的数字电视服务器传送的多媒体节目的数字信号,其特征在于,所述机顶盒还包括:数字信号接收发送单元,连接于所述中央处理单元,用于接收所述数字电视服务器发送的多媒体节目的数字信号,或者向所述数字电视服务器发送存储于多媒体节目存储单元的多媒体节目的数字信号;多媒体节目存储单元,连接于所述中央处理单元,用于存储所述数字电视服务器传送的多媒体节目,或者所述机顶盒提供的多媒体节目;数字信号处理单元,连接于所述中央处理单元,用于将所述数字信号接收发送单元接收的多媒体节目的数字信号进行解密,或者将所述多媒体节目存储单元存储的多媒体节目的数字信号进行加密;音视频数模转换单元,连接于所述数字信号处理单元,用于将所述 A set top box, the client is provided, including a central processing unit, a program for converting the digital signal provided to the multimedia server transmits the digital TV server, wherein said set top box further comprises: receiving a digital signal transmitting unit, connected to the central processing unit for receiving the digital signal of the digital multimedia television program sent by the server, or the server transmits to the digital TV display program stored in the program storage unit a multimedia digital signal; multimedia programming memory cells connected to said central processing unit for storing the multimedia server transmits digital television program, or set-top box provided in the multimedia program; digital signal processing unit, connected to the central processing unit, for receiving the transmitted digital signal digital signal receiving unit decrypts the multimedia program, multimedia program or the digital signal storage unit stores the multimedia program is encrypted; audio and video digital to analog conversion means connected to the digital signal processing unit, for the 字信号处理单元解密的所述多媒体节目的数字信号转换为模拟信号。 The digital signal conversion of the multimedia program decrypted digital signal processing unit into an analog signal.
  2. 2.根据权利要求1所述的机顶盒,其特征在于,所述机顶盒还包括:点播单元,连接于所述中央处理单元,用于接收所述数字电视服务器传送的多媒体节目点播请求,并对该点播请求进行鉴权;或者多媒体节目播放单元,连接于所述音视频数模转换单元,用于播放所述音视频数模转换单元将所述多媒体节目的数字信号转换的模拟信号;或者因特网连接单元,连接于所述中央处理单元,用于将所述机顶盒连接入因特网;或者输入单元,连接于所述中央处理单元,用于向所述多媒体节目存储单元输入多媒体节目fn息o 2. The set-top box according to claim 1, wherein said set top box further comprises: on-demand unit, connected to the central processing unit for receiving the digital multimedia on-demand television program server transmits the request and the demand request for authentication; or a multimedia program playing unit connected to the audio-video digital to analog conversion means for converting the analog signal to a digital signal of the multimedia program to play the audio and video digital to analog conversion means; or an Internet connection means, connected to the central processing unit, for the set-top box connected to the Internet; or the input unit connected to said central processing unit for inputting information fn o multimedia program to the multimedia program storage unit
  3. 3.根据权利要求1所述的机顶盒,其特征在于,所述机顶盒还包括:计费单元,连接于所述点播单元,用于在所述点播单元对所述数字电视服务器传送的多媒体节目点播请求鉴权成功后,对所述点播请求进行计费。 3. The set-top box according to claim 1, wherein said set top box further comprises: accounting unit, connected to the unit demand, the demand for digital multimedia program transmitted in the TV-on-demand server unit after requesting the authentication succeeds, the billing demand request.
  4. 4.根据权利要求1所述的机顶盒,其特征在于,所述数字信号接收发送单元包括: 数字信号接收模块,用于接收所述数字电视服务器发送的多媒体节目的数字信号;数字信号发送模块,用于将所述数字信号处理单元加密的存储于所述多媒体节目存储单元的多媒体节目的数字信号,发送到所述数字电视服务器。 4. The set-top box according to claim 1, wherein the digital signal receiving-transmitting unit comprises: a digital signal receiving means for receiving the digital signal to the digital multimedia television program sent by the server; digital signal transmitting module, means for encrypting the digital signal processing unit of a digital signal stored in the multimedia program multimedia program storage unit, the server transmits to the digital TV.
  5. 5.根据权利要求1所述的机顶盒,其特征在于,所述多媒体节目存储单元包括:接收数字电视节目存储模块,用于存储所述数字信号接收发送单元接收的所述数字电视服务器发送的数字信号的多媒体节目;点播数字电视节目存储模块,用于存储所述机顶盒提供的数字信号的多媒体节目。 The set-top box according to claim 1, wherein the multimedia program storage unit comprises: a storage module receiving a digital television program, the digital television digital server for storing said digital signal receiving means for receiving transmitted transmission multimedia program signal; demand digital television program storage module for storing a digital signal of the set-top box provided by a multimedia program.
  6. 6.根据权利要求1所述的机顶盒,其特征在于,所述数字信号处理单元包括:数字信号解密模块,用于解密所述数字信号接收发送单元接收的所述数字电视服务器发送的多媒体节目的数字信号;数字信号加密模块,用于加密所述多媒体节目存储单元存储的多媒体节目播放的数字信号。 6. The set-top box according to claim 1, wherein said digital signal processing unit comprises: a digital signal decryption module for decrypting the digital signal of the multimedia program server transmits digital television transmission and reception unit received a digital signal; a digital signal encryption means for encrypting the multimedia program is played multimedia program storage means for storing digital signals.
  7. 7.根据权利要求1所述的机顶盒,其特征在于,所述音视频数模转换单元包括:音频数模转换模块,用于将所述数字信号处理单元解密的音频数字信号转换为音频模拟信号;视频数模转换模块,用于将所述数字信号处理单元解密的视频数字信号转换为视频模拟信号。 7. The set-top box according to claim 1, characterized in that the audio-video digital to analog conversion means comprises: an audio digital to analog conversion module for converting the digital audio signal of the digital signal processing unit into an audio analog decrypted signal ; video digital to analog conversion module, the digital video signal for the digital signal processing unit into a decrypted analog video signal.
  8. 8.根据权利要求2所述的机顶盒,其特征在于,所述点播单元包括:注册模块,用于接收其他用户通过所述数字电视服务器发送的,注册为所述多媒体节目存储单元存储的多媒体节目收看用户的请求,并对所述其他用户的请求进行记录;点播请求模块,用于接收所述数字电视服务器传送的其他用户点播所述多媒体节目存储单元存储的多媒体节目请求;鉴权模块,用于根据所述注册模块的所述记录,对所述点播请求模块接收的所述多媒体节目的点播请求进行鉴权。 8. The set-top box according to claim 2, characterized in that the demand means comprises: register means for receiving another user via the digital television transmission server registered as a program storage unit stores the multimedia multimedia program viewing the user's request, and the request from other user record; demand requests multimedia program request means for receiving the other user-demand server transmits the digital multimedia television program stored in the storage unit; authentication module, with the multimedia program on demand based on the record in the registration module, the module receives a request for on-demand request for authentication.
  9. 9.根据权利要求2所述的机顶盒,其特征在于,所述多媒体节目播放单元包括:音频播放模块,用于播放所述音视频数模转换单元将所述音频数字信号转换的音频模拟信号;视频播放模块,用于播放所述音视频数模转换单元将所述视频数字信号转换的视频模拟信号。 9. The set-top box according to claim 2, wherein the multimedia program playback unit comprising: audio playback means for playing the audio video digital to analog conversion means the analog audio signal converted digital audio signal; video player module for playing the audio video digital to analog conversion means the analog video signal converted digital video signal.
  10. 10. 一种利用权利要求1至9任意一项所述的机顶盒实现数字电视播放的系统,所述系统包括数字电视服务器以及多个所述机顶盒,其特征在于,所述机顶盒包括:数字信号接收发送单元,连接于所述中央处理单元,用于接收所述数字电视服务器发送的多媒体节目的数字信号,或者向所述数字电视服务器发送存储于多媒体节目存储单元的多媒体节目的数字信号;多媒体节目存储单元,连接于所述中央处理单元,用于存储所述数字电视服务器传送的多媒体节目,或者所述机顶盒提供的多媒体节目;数字信号处理单元,连接于所述中央处理单元,用于将所述数字信号接收发送单元接收的多媒体节目的数字信号进行解密,或者将所述多媒体节目存储单元存储的多媒体节目的数字信号进行加密;音视频数模转换单元,连接于所述数字信号处理单元,用于将所述 10. A method of using a set-top box as claimed in any one of claims 1 to 9, the system for implementing a digital television broadcast, the system comprising a server and a plurality of digital television set-top box, wherein said set-top box comprising: receiving digital signals transmission means connected to said central processing unit, for receiving a digital signal of the digital multimedia television program sent by the server, or transmits digital signals stored in the storage unit of the multimedia program multimedia program to the digital TV server; multimedia program a storage unit connected to said central processing unit for storing the multimedia server transmits digital television program, or a set-top box provided by a multimedia program; digital signal processing unit, connected to the central processing unit, for the transmitting said digital signal receiving unit receives the multimedia program decrypts the digital signals, digital signals or multimedia program storage unit stores the multimedia program is encrypted; audio and video digital to analog conversion means connected to the digital signal processing unit, for the 字信号处理单元解密的所述多媒体节目的数字信号转换为模拟信号。 The digital signal conversion of the multimedia program decrypted digital signal processing unit into an analog signal.
CN 201010166862 2010-04-30 2010-04-30 Set-top box and digital television playing system CN101827201A (en)

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