CN1392705A - 信号主控制器使用红外传输命令和总线传输命令对多个av装置的控制 - Google Patents

信号主控制器使用红外传输命令和总线传输命令对多个av装置的控制 Download PDF

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CN1392705A
CN1392705A CN02124841A CN02124841A CN1392705A CN 1392705 A CN1392705 A CN 1392705A CN 02124841 A CN02124841 A CN 02124841A CN 02124841 A CN02124841 A CN 02124841A CN 1392705 A CN1392705 A CN 1392705A
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CN1309219C (zh
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戈泊尔·K·斯里瓦斯塔瓦
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

一种音频－视频平台(AVP)作为主控制器，与其他AV设备相互连接并提供连接到其上的所有AV设备的统一控制。AVP从用户接收所有的控制信号并使用红外(IR)导线经过IEEE－1394总线和主模式AV STB控制从模式设备，其具有与主模式AV设备的红外遥控相当的命令组。AVP还通过IR导线控制传统设备。AVP具有屏幕显示功能(OSD)并为连接的AV设备提供统一的图形用户界面(GUI)。AVP可以以普通格式传输用于处理和显示的压缩的AV信号，使其有可能显示所有AV设备的视频。

Description

信号主控制器使用红外传输命令和总线传输命令对多个AV装置的控制
                 发明领域
本发明涉及音-视频娱乐系统的领域。更具体的说，本发明涉及由总线传输命令和红外线传输命令组合的多种音-视频分量的主控制。
                 发明背景
典型的家用音-视频系统包括多种电子元件。例如，收音机、光盘(CD)播放器、数字通用盘(DVD)播放器、一对扬声器、电视(TV)接收机、家用录像系统-盒式录像机(VHS-VCR)等。这些典型的元件通过电缆彼此相连，其中一个元件经常被认为是家用音-视频系统的中央元件或主元件。收音机通常作为中央元件，因为其包括AM/FM调谐器、多个放大器、声音调整能力和多转换功能。在接收机的面板上具有控制按钮和开关，在很多情况下，这些按钮和开关的一部分或全部被复制在手握遥控单元上。遥控单元可以从短距离将任意按钮或开关选择传输到接收机。用户可以通过操作接收机的面板上的按钮和开关或可选择的操作手握遥控单元上的按钮控制家用设备。
现在市场上出售的家用电子设备比几年前出售的电子设备功能更多，也更复杂，消费者由于该设备所提供的功能而增加了他们的需求。当消费者购买了新的设备，通常将其连接到老设备旁边的家用音-视频系统中。新设备插入接收机、电视监控器或其他与接收机或监控器相连的设备的背面的开放式输入端。消费者通过新设备面板上的或与新设备一同购买的遥控单元上的控制开关控制新设备。这种设备所带来的一个问题就是用于家用音-视频系统中的不同元件的遥控设备的激增。将新设备添加到音-视频系统中经常意味着消费者需要明了、学会操作另一个专用遥控单元，并为其按时补充新电池。
因此希望提供一种促进新设备与已经存在的老设备相互结合的通用控制的网络。电气和电子工程师协会(IEEE)1394数字接口是用于音-视频(AV)设备如机顶盒(STB)、VCR、CD播放器和其他类似设备的相互连接的高速串行数字通信总线。IEEE1394总线是用于由许多AV设备简单相互连接而组成的本地网络的理想的解决方案。市场上所推广的大部分AV设备都包括IEEE1394端口。这里有两类包括IEEE1394端口的AV设备；即，主模式类和从模式类。主模式类AV设备可以控制网络中的从模式AV设备，但是，主模式类AV设备的协议使其不被从设备甚至其他主模式AV设备的命令所控制。例如，开放式电缆STB(主模式类)包括具有控制固件的IEEE1394端口，该控制固件用于将控制命令传送到其他从模式类AV设备中，如DVHS记录器。然而，其他主模式AV设备，如卫星STB既不能控制开放式电缆STB，也不能被其所控制。
不具有IEEE1394接口的设备不易结合于用户的音-视频系统中。典型的，这些设备需要专用遥控装置，因此其与主模式类1394设备相类似。这种问题在主模式类配置一般用在家用娱乐系统中并且许多传统的不具有1394接口的设备仍普遍使用的情况下十分普遍。用于各种AV设备的中央控制最好为用户提供对相互连接形成本地网络系统的AV设备的友好控制。
                    发明的简要说明
本发明具体用在音-视频平台(AVP)中，该平台用作主控制器，其具有类似的工作设备的所有优点，而没有上述的任何缺陷。为了实现上述目的，本发明在不同AV设备的相互连接中提供了一种独特配置。包括本发明的实施方式的AVP具有IEEE-1394端口和工作在解决上述问题的主模式下的固件。AVP是与其他AV设备互连并提供所有AV设备的统一的用户控制的主STB，该所有的AV设备与其经过连接总线如IEEE-1394总线或通用串行总线(USB)也通过红外导线相连。其具有作为接收用户的所有控制信号主控制器的优点。典型的AVP可以构成为提供在屏幕上的显示(OSD)，该显示对所有连接的AV设备执行统一的图形用户界面(GUI)。其可以以一种普通格式传送用于处理和显示的压缩的AV信号，其还具有显示所有视频可能的AV设备的视频的特性。本发明使用红外(IR)导线通过IEEE-1394总线和主模式AV设备以及传统设备控制从模式AV设备。AVP以用于通过网络或专用模拟或数字信号线连接到其上的每个装置的命令组编程。
                        附图说明
本发明的这些和其他方面在下文中将更加明显，其在附加的权利要求中将特别指出，现在结合附图进行下面的描述，以供参考，其中
图1是本发明的优选实施方式的方框图；
图2、3、4和5是本发明的AVP的处理顺序流程图；
图6、7、8、9和10是使用AVP遥控单元显示音-视频控制菜单的屏幕显示。
                      发明的详细说明
本发明涉及一种系统，家用娱乐系统的用户可以以其从称为音-视频平台(AVP)的主或中央控制站控制多个音频视频设备。音-视频设备是用于描述家用娱乐系统的电子元件如卫星STB、电视监视器、DVHS VCR、CD播放器等的通称。很多用户具有不具有数字链路(即VHS-VCR或调谐器/放大器)的传统音-视频设备。另一方面，很多用户购买使用数字链路传送压缩的音频和视频信号并通过互连总线与其他音-视频设备相通信的音-视频设备。
图1示出了根据本发明的典型的实施例的家用AV网络100。网络100包括九个设备，数字VHS(DVHS)录像机104、开放式电缆STB108、高清晰度数字卫星系统(HD-DSS)接收机112、国家电视制式委员会/先进电视系统委员会(NTSC/ATSC)TV调谐器116、家用录像系统—盒式录像机(VHS-VCR)120、AVP130、标准清晰度电视(SDTV)监视器174、高清晰度电视(HDTV)监视器170和多通道音频放大器178。
用于图1所示的家用AV网络100的IEEE1394串行总线125是用于数字设备的相互连接的高速总线体系，并提供了用于多个设备的通用输入/输出连接。IEEE1394总线125是国际硬件和软件标准，具有用于以100、200或400兆比特每秒(Mbps)的速度传输数据的数字接口。1394总线用于组合消费者多媒体系统中的娱乐、通信和运算电子设备。IEEE1394标准定义了用于请求的数字接口，允许连接到总线上的设备中的直接的数字通信。IEEE1394总线125的使用方便了音-视频设备的彼此连接，因为其支持菊花式链接和树形对等网络通信的分支。另外，其定义了一种可缩放结构，使得用户可以在单条总线上混合100、200和400Mbps设备。IEEE1394使用的电缆标准与用于连接这些设备的较粗的电缆相比在直径上相对较细。电缆长度在铜质电缆的4米到玻璃光纤的数千米的范围内。
在总线使能的同时，设备可以添加到IEEE1394总线中和从IEEE1394总线中移开。如果设备被如此添加或移开，总线自动重构自身以传输现有节点之间的数据。
当系统就IEEE1394总线而言，应当考虑到，其他控制和数据总线系统如通用串行总线(USB)、以太网总线或甚至并行总线如核心总线(Centronics bus)也可以替代1394总线而使用。
节点(即音频/视频设备)被认为是在总线上具有唯一地址的逻辑实体。每个节点提供识别ROM、控制寄存器的标准化组和其自身的地址空间。图1中所示的总线125的IEEE1394通信标准支持数字编码信息的异步数据传输和同步数据传输。异步传输是传统数据传输操作，其尽快产生并从源头向目的地传输数据内容。同步数据传输是实时传输，其发生使得有效瞬间之间的时间间隔与传输和接收请求具有相同的持续时间。同步传输的数据的每个分组可以在其自身的时间阶段内传输。
用于同步数据传输的请求的一个例子是从开放式电缆STB108到TV监视器174。开放式电缆STB108从电缆组接收调制并编码的视频流，并调制并编码视频流以生成音频和视频分组的数据流。这些分组通过总线125被传输，以在适当的时候在SDTV监视器174或HDTV监视器170上重现。IEEE1394标准总线系统提供用于请求之间的同步数据传输的多个通道。特别的，源标识符和目标标识符与数据一同传送，以确保被适当的请求接收。这使得多个请求同时通过总线结构传输同步数据。
配备有IEEE-1394端口的音-视频设备通常用作主设备，其控制其他音-视频设备，并通过IEEE-1394总线接收从他们发出的音-视频信号。AV设备104、108、112、116和130通过IEEE-1394总线125从各链路125a到125e通信连接，并可以根据已知的IEEE-1394协议与连接到总线125上的任何其他设备通信。然而，应当注意，开放式电缆STB108和HD-DSS112是具有总线协议的主模式类设备，该协议不允许从另一个AV设备接收控制信息。当总线125如图所示包括五个设备时，应当理解，总线125适于包括多至总线技术的物理极限的任意数量的设备(例如目前规定的用于IEEE1394的63个设备)。虽然未在图1中示出，但是，应当考虑到，HDTV监视器170和SDTV监视器174也可以通过总线125或IR导线138被AVP130控制，并可以适当的通过总线125从AVP130接收数据。
AVP130是提供其他AV设备的相互连接并为通过IEEE-1394总线125或IR链路128a、128b和128c以及模拟信号连接123和124连接其上的所有AV设备提供统一的用户控制的STB。IEEE-1394总线连接器126用于提供到IEEE-1394链路125e的连接，以接收AV设备104、108、112、116的数字数据并向DVHS播放器104和TV调谐器116传输数字控制数据。AVP130包括IEEE1394接口132、MPEG解码器/编码器134、视频数字化仪142、IR发射机/接收机138、PCI总线146、声卡144、视频开关136、永久存储单元150如硬盘驱动器和包括中央处理单元(CPU)152、PCI接口153、系统存储器158、图象处理器156和软件学习模块154的控制处理器160。控制处理器160如下所述控制AVP130的其他元件，并通过IEEE1394接口132和IR发射机/接收机138控制所有连接到AVP130上的AV设备。
为了为主模式设备和传统设备提供集中控制，AVP130利用了这些设备的IR控制能力。结果，使用两种技术实现了总体集中控制。从模式类AV设备由IEEE-1394总线接收的命令控制，主模式类设备由各设备的IR接收机从IR发射机/接收机138的IR传输接收的命令控制。
作为一种典型情况，AV设备104、108、112和116的每一个都配备由自己的遥控单元。在本发明的典型实施例中，对传统设备或主模式设备的控制可以通过向AVP130记录遥控装置而实现。例如，即插即用模式中，当连接到1394总线后设备标识符由AVP读取时，记录可以自动发生，或者其可以通过向AVP确定设备种类或通过下载主模式设备、模拟设备或传统数字设备的命令组而手动发生。下载的命令组可以被存储在存储器158内或AVP130的硬盘驱动器150内。
下载可以通过例如AVP访问制造者的网址以获得命令代码或提示用户跟随菜单驱动程序而完成，该菜单显示在TV监视器174上，其指示用户按下特定的键或操作按钮。由按下的键和操作按钮得到的传输的IR信号由设备驱动器接收和解码，与特定遥控器的特定功能相关的合成编码存储在存储器中。
图5是AVP130用于为元件记录IR遥控命令的一些过程的例子。用户选择AVP遥控单元129上的AVP开电开关，在步骤510中，操作电源施加到AVP130和TV监视器174上。AVP130的OSD功能在TV监视器170上显示包括标识有可选择功能或AV设备名称的区域的主菜单，如图6所示。在该实施例中，主菜单的每个区域都标识有功能的名称或AV设备的名称和在区域的右下角的指定元件数字。标识区域的显示位置可以与遥控装置129上的键的构成相匹配。例如，带有元件数字9的区域相应于名称“记录”。因此，当图6所示的菜单被显示并且观众按下了遥控单元129上的标识有数字9的键时，选定了记录功能。
在该实施例中，当用户选择了记录功能时，在步骤512中，显示记录功能菜单。参考示出了详细的记录菜单的图10，观众选择“AV设备”(AVP遥控器129键区的数字1)。在步骤513中，观众被提示从设备列表的记录中间或候选的记录中进行选择。如果观众选择列表记录，那么，然后在步骤514中，列表显示已经先提供有各控制代码并已将各控制代码存储在存储器(如硬盘驱动器150)中的已知的AV设备。
同时，在步骤514中，用户通过如键入AVP键区上的ID数字或将光标定位在显示的设备的数字上并按下“输入”键而选择一个显示在菜单上的AV设备。当名称和数字被选定，同样在步骤514中，AVP提示在控制过程中向与AV设备相关的设备输送能量。如果设备是从模式设备，通过总线125传输命令，或通过IR导线138传输命令。如果设备连接到总线125上，在步骤515中，AVP监控用于传送设备的能量开状态信息的总线。如果设备没有连接到总线125上，AVP提示观众如果设备打开就按下特定键。在步骤515中，当上电命令成功传输时，在步骤516中，AVP存储作为AV设备的正确编码的制造ID编码，并结束处理。如果能量开状态或观众响应在短时间内没有被接收到，AVP提示用户选择其他ID数字并重复处理过程。
如果AV设备ID无效，将在步骤513中选择其他记录过程。简而言之，该程序提示用户按下遥控单元上的特定功能以选择设备，并记录作为设备上该功能的控制命令的传输的IR信号。在步骤518中，使用用于用户被提示选择特定AV设备类型如VCR、DVD播放器、卫星接收机等的选定的AV设备的专用遥控单元。然后，用户被提示使用设备专用遥控单元发送特定命令。例如，如果用户已经指定被记录的设备是VCR，那么，用户可以将被提示按下快进按钮。在步骤519中，一旦命令被记录，AVP提示观众按下遥控单元上的每个键，以使在步骤518中，相应的IR命令可以被记录。AVP可以向观众提供反馈，以指出操作命令已经被顺利记录，如通过以特定颜色如绿色标记每个成功记录的功能。在步骤520中，当所有代码被输入后，元件的命令组被存储在如存储器158或硬盘驱动器150中。
VHS-VCR120的遥控装置可以以如前面描述的相同的方式记录，例如，从设备的预存储组中选择唯一的遥控命令组控制或手动输入并存储在存储器中，以在需要时由用户重调用。记录之后，当用户选择控制特定的主模式类设备或传统模拟设备时，设备的遥控器的预先存储的命令组被从存储器158或硬盘驱动器150重调用并被IR发射机/接收机138传输，其与AVP130的遥控单元129相结合，以控制设备。
图2是AVP130控制VHS-VCR120的过程的实施例。在步骤210中，用户选择AVP遥控单元129上的AVP开电开关，电源施加到AVP130上，AVP130自动施加电能到电视监视器如HDTV监视器170上。OSD在HDTV监视器170上显示包括标识有可选择功能和AV设备的区域的主菜单，如图6所示。如上所述，典型的主菜单的每个区域都标识有功能的名称或AV设备的名称和在区域的右下角的指定元件数字。例如，带有元件数字5的区域相应于名称“VHS-VCR”。用户从主菜单中选择“VHS-VCR”(AVP遥控器129键区的数字5)，在步骤212中，VHS-VCR120的预先存储的命令组从存储器中被检索，在一个典型的实施例中，VHS-VCR功能菜单被显示。
参考图7，用户在VHS-VCR菜单上选择”电源”(AVP遥控器129键区的数字9)。在步骤214中，向VHS-VCR120施加能量。在步骤216中，AVP通过IR发射机/接收机138向VHS-VCR传送开电命令。在步骤218中，用户在VHS-VCR菜单中选择“记录”(AVP遥控器129键区的数字4)，在步骤220中，AVP通过IR发射机/接收机138向VHS-VCR传送记录命令。用于举例功能的操作流程结束。VHS-VCR的其他功能以相同方式由AVP130控制。
虽然本发明的典型实施例已经使用在屏幕上显示的菜单示出以引导用户选择由选定设备执行的功能，但是，应当考虑到，AVP130的遥控单元129可以控制很多种类的设备的控制按钮，这些按钮的一部分可以用于多个设备。例如，一组快进、倒带、播放和停止按钮可以被VHS-VCR单元、音频录音座和DVHS单元所共用。通过按下其中一个按钮，适当的命令传输到AVP中，在AVP中，为系统中的设备传输适当的命令。例如，遥控器可以包括“VCR”按钮。在该按钮被按下后(或其保持按下时)，按下快进键将使得AVP130通过AVP130的IR导线138向VCR120发送适当的快进命令。然而，如果遥控器上的DVCR按钮被按下，那么，然后按下快进键将使得AVP130通过1394总线向DVHS发送快进命令。
VHS-VCR120如图所示与TV天线103相连，以接收与复合视频信号调制的RF信号。VHS-VCR120还可以被连接以接收从卫星天线102或宽频带电缆连接器107接收到的信号。VHS-VCR120在磁带上记录接收的视频信号，并通过磁带的回放从输出端121提供模拟视频信号和从输出端122提供模拟音频信号。输入连接器123被连接以接收从NTSC/ATSC调谐器116和VHS-VCR120得到的模拟视频信号。从其中一个设备得到的模拟视频信号以相同的方式被处理。VHS-VCR还可以将从接收到的信号得到的模拟音频和视频信号直接传送到AVP130中，而不用首先记录他们。
例如，视频数字化仪142可以连接到连接器123内侧，以接收模拟视频信号。典型的视频数字化仪142包括用于从调谐器116或VCR120选择视频输入的多路转换器。视频数字化仪142将标准宽频带模拟视频信号转换为数字复合视频信号数据。
MPEG编码/解码器(编解码器)134连接到视频数字化仪142，以接收并任意压缩数字复合视频数据。MPEG编解码器134的操作可以由许多市场上买的到的大规模集成电路如由iCmopression Inc制造的iTVC15音-视频编码/解码设备之一执行或由顾客定制的专用集成电路执行。编解码器134提供支持MPEG-1和MPEG-2以及MPEG-1第二层的实时视频和音频编码和解码。MPEG编解码器134可以压缩接收的数字复合视频数据并将其通过PCI总线146传输，以存储在硬盘驱动器150中，用于后来的恢复，有选择的，可以对数字化模拟视频信号进行缩放以使其在图形用户界面(GUI)上作为一个窗口出现，或将数字化模拟视频信号转换为模拟信号，以提供到视频开关136，用以连接到SDTV监视器170。MPEG编解码器134执行由视频数字化仪得到的视频信号的格式转换，以将视频信号转换为适合于在HDTV监视器174上显示的格式。
参考图1，AVP130的输入端126被连接以接收从IEEE-1394总线链路125e得到的压缩的数字数据。IEEE-1394接口132连接到输入端126，以接收和处理数字数据并提供由固定长度分组构成的传输流(TS)。每个分组具有包括包括在其中的数据、同步字节、误差指示器和标识程序比特流属于哪一分组的分组标识符(PID)的标题。MPEG编解码器134被连接，以接收、多路分解、解码和将解码视频格式化为符合观众显示格式的视频。
在编解码器134内的多路信号分离器(未示出)扫描输入的用于同步字节的传输流并开始解码TS。多路信号分离器提取具有目标PID的分组并将其形成为由编解码器134解码为基带视频信号的列队流。在编解码器134内的显示格式转换器(未示出)将接收的视频信号转换为与选定的视频监视器170或174兼容的格式。MPEG编解码器134还与PCI总线相连接，并可以通过PCI总线将压缩的数字数据传送到用于存储的硬盘150中。用户可以请求将存储的数据再调用到MPEG编解码器134中，以如上所述通过视频开关解压缩和观看。硬盘驱动器150和CPU152可以用于实现与REPLAYTY Inc销售的系统类似的个人视频记录系统。
视频开关136被连接以从MPEG编解码器134接收格式化的视频输出信号和从图象处理器156接收输出图象信号(如在屏幕上显示的菜单)。视频开关136可以将编解码器134提供的信号、图象处理器156提供的信号或两种信号的组合连接到分量视频/S-视频输出端162或RGB/Y-Pr-Pb输出端164。从音-视频设备104、108、118得到的压缩的音频数据被多路分解、解压缩并格式化，以在PCI总线146上传输。声音处理器144被连接以接收解压缩的数字音频信号，将其转换为模拟信号，提供作为输出信号的模拟信号。声音处理器144向输出端166提供音频信号。音频放大器178连接到音频输出端166，以放大信号，并将其提供到扬声器。
DVHS播放器104数字化、压缩并在磁带上记录视频信号或以14.1Mbps的数据速率从磁带上播放解压缩的视频信号。DVHS播放器104提供500线的水平分辨率和超级VHS(S-VHS)设备的3倍的色彩带宽。音频信号也可以用数字方式记录并提供高质量的声音。DVHS播放器104通过IEEE1394总线125a由AVP130的连接器126向IEEE1394接口132提供音频和视频数字数据。MPEG编解码器134被连接以从IEEE1394接口132接收传输流(TS)。MPEG编解码器134多路分解、解码和格式化转换的视频并向视频开关136提供视频输出信号。然后，视频信号被从开光136提供到SDTV监视器170和HDTV监视器174。从编解码器134得到的数字化音频经过PCI总线146被提供到在其中其被转换为模拟信号的声卡144，并通过连接器166提供到立体声放大器178。
图3是AVP130控制作为典型的从模式类AV设备的DVHS设备104的过程的实施例。在步骤310中，用户选择AVP遥控单元129上的AVP开电开关，使电源施加到AVP130和HDTV监视器170上，如上所述。OSD在HDTV监视器170上显示主菜单，如图6所示。用户从主菜单中选择“DVHS”(AVP遥控器129键区的数字1)，在步骤312中，DVHS单元104的预先存储的命令组从存储器中被检索，并显示图8所示的DVHS104功能菜单。参考图8，用户选择DVHS菜单上的“电源”(使用AVP遥控器键区上的数字9)，在步骤314中，电源施加到DVHS104上。
在步骤316中，AVP通过IEEE1393总线125向DVHS传送开电命令。在步骤318中，用户选择“记录”功能(AVP遥控器129键区的数字4)，在步骤320中，AVP通过总线125向DVHS传送记录命令。这时，用于举例功能的操作流程结束。数字化视频和音频数据通过IEEE1394总线125经过接口132从DVHS104得到，并传送到MPEG编解码器134。虽然控制操作未使用在屏幕上显示的菜单示出，但是，应当考虑到，其可以如上述所述的使用AVP遥控装置129上的按钮来实现。
开放式电缆STB108为广播服务(模拟和数字)和包括国际协议(IP)数据服务(程序同步和异步)、IP电话通信、电视电话学和随选对话式操作的实时交互多媒体服务提供整体环境。开放式电缆STB08通过输入电缆连接107调谐到许多有效的6MHz输入通道之一从而接收多媒体信息。调谐的电缆管道的传输流(TS)通过1394总线125e被传送到编解码器134。编解码器134解码(解压缩)音频和视频信号。然后，解压缩的视频格式转换为匹配观众的显示170或174的格式。
设备108和112式主模式AV设备，附加连接到IEEE1394总线，用于传送数据和状态信号，它们还构成为通过各红外链路128a和128b接收AVP130的命令。由于开放式电缆STB108的主模式协议不允许在IEEE1394总线上接收外部命令，因此，本发明使用AVP130的IR发射机/接收机138的IR传输控制开放式电缆STB108。如前所述，开放式电缆STB108已被预先记录，其整个命令组存储在例如AVP130的硬盘驱动器150中。
图4说明AVP130如何控制作为典型的主模式类STB的开放式电缆STB108。在步骤410中，用户选择AVP遥控器129上的AVR开电开关，使电源施加到AVP130和HDTV监视器170上，如上所述。OSD在HDTV监视器170上显示包括标识有可选择功能或AV设备的区域的主菜单，如上所述，如图6所示。用户选择“开放式电缆”(AVP遥控器129键区的数字2)，在步骤412中，开放式电缆STB108的预先存储的命令组从存储器中被检索，开放式电缆STB108的功能菜单被显示。
参考图9，在AVP传送命令到开放式电缆STB108中以开启其自身的步骤中，用户从开放式电缆菜单上选择“CATV”(AVP遥控器129键区的数字1)。在步骤416中，AVP通过IR发射机/接收机138向DVHS传送开电命令。然后，在步骤418中，用户选择开放式电缆菜单上的“键区”(AVP遥控器129键区的数字0和6(代表通道6))，在步骤420中，AVP通过IR发射机/接收机138向开放式电缆STB108传送通道选择命令，以使STB108调谐到通道6。在步骤422中，用于操作选择的举例的操作流程结束。如上所述，数字化视频和音频数据通过总线125在STB108和AVP130之间进行传输。
TV天线103向NTSC/ATSC TV调谐器116的输入端提供RF输入信号。TV调谐器116解调和数字化复合视频信号并同时向IEEE-1394总线链路125提供模拟和数字化形式的视频信号和向输出端117提供模拟视频信号。如果接收了ATSC电视信号，调谐器116可以解码和解调格码残余边带调制的ATSC信号，以提供用于选定的电视节目的传输流。该传输流通过总线125t提供到AVP130。设备116还向AVP提供模拟视频和音频信号。由于NTSC/ATSC TV调谐器116是从模式设备，因此，其被以与DVHS播放器104相同的方式通过1394总线125被控制。
高清晰度数字卫星系统(HD-DSS)接收机112连接到卫星天线，以从卫星接收MPEG压缩数字分量视频信号。(HD-DSS)接收机112解调调谐的通道并提供包括压缩音频和视频信息的传输流。由HD-DSS接收机112提供的传输流(TS)内的数字视频和音频信号通过IEEE-1394总线125传输。HD-DSS接收机112是主模式设备，可以使用IR命令以与上述开放式电缆STB108相同的方式由AVP130控制。
SDTV监视器174和HDTV监视器170通过视频和音频电缆连接到AVP130，以显示复合视频信号；S-视频(Y/C或亮度/色度)信号；红、绿、蓝(RGB)分量信号和亮度(Y)、色差信号(Pr和Pb)、(Y-Pr-Pb)。本发明使得用户连接具有不同格式和不同控制方式的AV设备并通用显示。任何需要在选定的监视器上显示视频图象片断的格式转换可以在MPEG编解码器134中执行。用户不必考虑到以该方式连接的音-视频设备的视频格式。不同的电视监视器也可以由AVP130用IR导线138或1394总线125控制，如上所述。另外，当电视监视器被记录时，AVP确认方位分配和其显示的视频信号。如上所述，MPEG编解码器134包括改变输出视频信号的格式以与选定的显示设备的格式相匹配的格式转换器(未示出)。
软件学习模块154被连接，以接收和存储用户为实现特定的目的而常规执行的将各种元件的结构相互连接一起的惯用设定过程。例如，本发明的一个应用可以是观看选定的频道的电视的同时记录其他频道，并同时上因特网定购在选定的频道上做广告的产品。使用软件学习模块154需要的步骤将马上被执行并作为宏记录，并存储在软件学习模块154内。更简单的例子将在使用DVHS播放器104观看预先记录的磁带的上下文举例描述。就上述实施例而言，观众可以简单按下遥控装置129上的DVHS按钮以向AVP130、DVHS播放器104、HDTV监视器170和多通道音频放大器178传送开电命令。另外，单个按钮按下将使AVP向DVHS播放器104传送“播放”命令并设定MPEG编解码器134内的多路转换器和声卡144，以处理由DVHS播放器提供的信号。
虽然这里已经示出并描述了本发明的优选实施例，但是，可以理解，这些实施例仅用于举例描述。在不背离由附加的权利要求定义的本发明的精神的条件下，本领域技术人员将可以作出多种改变、改进和替代。

Claims (12)

1、一种用于视频信号处理系统的音频/视频平台(AVP)，包括：
数字通信端口，用于在AVP和至少第一视频设备之间传输控制和数据信号；
至少一个模拟视频通信端口，用于在第二视频设备和AVP之间传输视频信号；
红外发射机，用于传输红外命令；和
控制处理器，耦合到数字视频通信端口和红外发射机上，用于通过数字通信端口向第一视频设备发送控制命令，和通过红外发射机向第二视频设备发送控制命令。
2、根据权利要求1所述的音频/视频平台，其中，数字通信端口接收来自至少第三视频设备的数据信号，控制处理器被配置成通过红外发射机控制第三视频设备。
3、根据权利要求2所述的音频/视频平台，其中，数字通信端口是IEEE1394总线，其用于向作为从设备的第一视频设备发送和接收控制和数据信号，并接收来自作为主设备的第三视频设备的数据信号。
4、根据权利要求1所述的音频/视频平台，进一步包括存储器，用于存储用于第一和第二视频设备的相应命令组。
5、根据权利要求1所述的音频/视频平台，其中，数字通信端口被构成为通过数字通信端口接收如运动图象专家组(MPEG)所规定的传输流，并且音频/视频平台进一步包括MPEG解码器，其处理MPEG传输流，以生成一个视频输出信号。
6、根据权利要求5所述的音频/视频平台，进一步包括：
遥控装置，用于向音频/视频平台发送遥控命令；和
图象处理器，用于产生在屏显示信号；
其中，控制处理器产生在屏显示信号，该信号利用图象处理器显示用于选定的第一和第二视频设备之一的控制命令，并响应来自遥控装置的相应命令以向选定的第一和第二视频设备之一传输相应命令。
7、根据权利要求5所述的音频/视频平台，进一步包括遥控装置，用于向音频/视频平台发送遥控命令，遥控装置包括用于控制第一和第二视频设备的控制开关，其中，控制处理器响应从遥控装置接收到的相应命令向第一和第二视频设备传输控制信号，以控制第一和第二视频设备。
8、一种用于控制来自音频/视频平台的多个视频设备的方法，其中，多个视频设备的第一组包括相应的数字通信端口并被配置为从模式设备，多个视频设备的第二组包括相应的数字通信端口并被配置为主模式设备，至少视频设备第二组包括红外接收机，其响应由红外线遥控装置传输的命令，该方法包括以下步骤：
利用数字通信端口向多个视频设备的第一组传输数字命令；和
向多个视频设备的第二组传输红外命令。
9、根据权利要求8所述的方法，进一步包括步骤：
显示用于选定的第一和第二组视频设备之一的命令菜单；
接收相应于所显示的命令菜单的红外命令；和
将所接收的命令转换成用于选定的第一和第二组视频设备之一的相应命令并向选定的第一和第二组视频设备之一传输转换后的命令。
10、根据权利要求8所述的方法，其中，多个设备进一步包括第三组设备，其不包括数字通信端口，但包括另一个红外接收机，该红外接收机响应由另一个红外遥控装置传输的命令，该方法进一步包括向多个设备的第三组传输红外命令的步骤。
11、根据权利要求10所述的方法，进一步包括步骤：
记录第一、第二和第三视频设备，以识别用于第一、第二和第三视频设备的相应命令组；
将第一、第二和第三视频设备的识别命令组存储到存储器中；
响应向选定的第一、第二和第三视频设备之一传输控制信号的请求，从存储器中检索用于选定视频设备的识别命令组；
使控制信号与来自检索出的命令组的一个命令相关联；
向选定的第一、第二和第三视频设备之一传输相关的命令。
12、根据权利要求11所述的方法，其中，第一和第二视频设备通过数字通信端口向音频/视频平台发送数据，第三视频设备通过模拟数据端口向音频/视频平台发送数据，该方法进一步包括：
配置音频/视频平台，以在选定了第一和第二视频设备之一时从数字通信端口接收数据；和
配置音频/视频平台，以当第三视频设备被选定时从模拟数据端口接收数据。
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