CN103154985A - 供给省略的关键代码部分以激活音频视频装置中的可许可部件 - Google Patents
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Abstract
音频-视频显示装置(12)包括需要软件代码来执行可许可功能的可许可部件(例如54、56、58等)。该装置在具有该软件代码但不具有关键代码(208)的情况下发售。在判断为对于可许可功能的许可已被激活时,将关键代码(208)下载到该装置,以便使得许可的功能能够执行。
Description
技术领域
本申请一般涉及供给省略的关键代码部分,以便激活音频视频装置中的可许可部件。
背景技术
电视并入了大量的技术,以便使得观众能够观看来自各种源的节目。这些源包括模拟(使用全国电视系统委员会(NTSC)格式,即)以及数字(使用高级电视系统委员会(ATSC)格式)TV信号的地面广播源。典型地,ATSC信号使用被称为运动图像专家组(MPEG-2)的视频压缩,因此,如果电视机支持ATSC节目,它们必须支持MPEG-2解压缩。
有线电视提供的“基本”电视节目也能以NTSC或正交幅度调制(QAM)格式提供。有线电视提供的“增强”节目也可使用高清晰度多媒体接口(HDMI)原理提供。类似地,卫星提供的TV信号可以以HDMI接收。同样,来自因特网的视频能够以多种格式显示在许多现代电视机上,包括以有线数据业务因特网规范(DOCSIS)格式。另外,电视机常常被配置为支持多种音频格式,包括高级音频编码(AAC)、音频编码3(AC3)、数字化影院系统(DTS)等等。如当代观众所知,电视机可望支持电子节目指南(EPG)的呈现。
发明内容
如这里所明了的,多种电视技术要求支付许可费。如这里进一步明了的那样,可能不使用为支持多种节目源而必须内置到现代电视机中的许多技术。尽管如此,仍支付了对于不使用的技术的许可费,无谓地浪费了成本。
因此,一种方法包括在具有能够执行代码的处理器的音频-视频显示装置中接收初始软件代码。所述初始软件代码不包括关键代码,在没有所述关键代码的情况下,所述处理器不能执行所述初始软件以进行许可的功能。响应于对于所述许可的功能的许可已经被激活的判断,关键代码条被接收,以便与音频-视频显示装置中的初始软件代码协作,从而给出具有完整能力的代码。该方法包括使用所述处理器来执行所述具有完整能力的代码,由此在所述音频-视频显示装置上进行所述许可的功能。
所述初始软件代码具有入口点和出口点,所述关键代码在所述出口点和所述入口点之间被复制到所述初始软件代码中,以便得到所述具有完整能力的代码。在某些实施例中,在没有关键代码的情况下,初始软件代码无论怎样都不具有可执行能力。在其他的实施例中,在没有关键代码的情况下,初始软件代码具有简化的可执行能力。在后一种实施例中,初始软件代码能够包括简化能力模块,简化能力模块可在接收到关键代码时从运行中移除。任何情形中,在没有关键代码的情况下,不论解除任何安全措施,许可的功能不能被执行,这是因为关键代码必须存在于软件代码内并且可执行,在对于许可的功能的许可被激活之前,关键代码从初始软件代码中缺失,这与关键代码在初始软件代码中存在而仅仅是以某种方式禁用相反。
在另一实施形态中,电视机包括可许可部件,在发售所述电视机之前尚未获得对于所述可许可部件的许可。电视机中的处理器执行与该可许可部件相关联的软件代码,以便仅仅在关键代码在该软件代码中存在的情况下提供许可的功能。在软件代码中不存在关键代码的情况下,即使该软件代码可被处理器访问,该软件代码也不能由处理器执行以提供许可的功能。响应于对于许可的功能的许可和/或对于可许可部件的许可已被激活的判断,通信地耦合到处理器的通信接口接收关键代码。
可许可部件可以是地面广播高级电视系统委员会(ATSC)解调器组件、视频解码器、音频解码器、数字版权管理部件、web浏览器或电子节目指南(EPG)部件。
另一方面,一种方法包括,响应于对于许可的功能的许可已被激活的判断,向音频-视频显示装置提供音频-视频显示装置中的初始软件代码的关键代码,以便得到具有完整能力的代码。提供关键代码之前,典型地,在该装置被发售时,初始软件不包括关键代码,在没有关键代码的情况下,初始软件不能被音频-视频显示装置中的处理器执行以进行许可的功能。该方法包括,向音频视频显示装置指示许可的功能在该音频-视频显示装置上可用。
附图说明
参照附图可最佳地理解本发明在其结构以及运行两方面的细节,在附图中,类似的参考标号指代类似的部件,且其中:
图1为根据本原理的非限制性示例性系统的框图;
图2为示例性电视机的框图;
图3为根据本原理的非限制性电视机设置逻辑的流程图;
图4为用于自动检测是否需要激活ATSC解调器的非限制性逻辑的流程图;
图5-7的示意图示出了用于激活ATSC解调器的替代性方法;
图8为用于对电视机中的部件进行许可的非限制性逻辑的流程图;以及
图9的示意图示出了替换缺失的关键软件以启用可许可特性的程序代码。
具体实施方式
首先参照图1中示出的非限制性示例性实施例,系统10包括音频视频装置,例如电视机12,其包括与TV处理器18通信的TV调谐器16,TV处理器18访问有形计算机可读存储介质20,例如基于盘的存储器或固态存储器。电视机12能够在一个或多个扬声器22上输出音频。电视机12能够使用与处理器12通信的内置有线或无线调制解调器24接收来自因特网的流视频,处理器12可执行软件实现的浏览器26。在TV处理器18的控制下,视频被呈现在TV显示器28上,TV显示器28例如、但不限于为高清晰度TV(HDTV)平板显示器。可使用例如射频或红外方式从遥控器(RC)30无线地接收对处理器18的用户命令。可使用除电视机以外的音频-视频显示装置,例如智能电话、游戏主机、个人数字组织器、笔记本电脑以及其他类型的计算机等。
由与电视机12通信的地面广播天线34接收的、来自一个或多个地面TV广播源32的TV节目可在显示器28和扬声器22上呈现。地面广播节目可遵照数字ATSC标准,并可在其中承载地面广播EPG,但是,地面广播EPG可经由以太网或电缆通信链路或卫星通信链路从例如因特网的替代性源接收。
来自有线电视首端(head end)36的TV节目也可在电视机处被接收,用于在显示器28和扬声器22上呈现TV信号。当仅仅想要基本电缆时,来自墙壁的电缆典型地承载QAM或NTSC格式的TV信号,并直接插入美国的电视机底架上的“F型连接器”38,然而,在其他国家用于此目的的连接器可以变化。形成对比的是,当用户具有例如扩展的电缆订购时,来自首端36的信号典型地通过STB40被发送,STB40可与电视机底架分离或集成在电视机底架中,但在任何情况下,其向电视机发送HDMI基带信号。
类似地,从由与家用卫星天线相关联的集成接收器/解码器(IRD)44接收的TV广播信号的卫星源42传送的HDMI基带信号可被输入到电视机12,用于在显示器28和扬声器22上呈现。另外,可从因特网46接收流视频,用于在显示器28和扬声器22上呈现。流视频可在计算机调制解调器24上接收,或者,其可在电视机12外部的、家中的调制解调器48上被接收,在有线或无线以太网链路上被输送到电视机12,并在电视机底架上的RJ45或802.11x天线上被接收。
图2示出了示例性电视机12的细节。如所示出的,ATSC格式的地面信号被输入到TV调谐器16,如同使用基本电缆且墙壁电缆被插入F型连接器38的情况下以NTSC或QAM格式的基本电缆一样。另一方面,流因特网视频可在DOCSIS调谐器50上接收,并在DOCSIS解码器/解调器52上进行解调/解码。典型地,DOCSIS部件与电视机12分立地封装,但在某些实施例中可被包括在电视机12的底架中。
取决于所接收的信号格式,调谐器16的输出可被发送到NTSC解码器/解调器54,或者QAM解码器/解调器56,或者ATSC解码器/解调器58。来自NTSC解码器/解调器54的输出能被直接发送到显示器28和扬声器22,以便进行呈现。另一方面,来自数字解码器/解调器56、58的输出典型地被发送到传输流解复用器60,传输流解复用器60在所选择的流中将想要的节目从其他节目分离,并将想要的节目发送到MPEG视频解码器62,MPEG视频解码器62又对想要的MPEG节目进行解压缩,并将解压缩后的节目发送到TV显示器28,以便进行呈现。来自解复用器60的音频可被发送到音频解码器64,音频解码器64又将解码后的音频发送到扬声器22,以便进行呈现。
与上面讨论的解码器/解调器、解复用器以及MPEG解码器序列形成对比的是,来自STB40或是IRD44的视频在由电视机12进行接收时采用的是基带HDMI。相应地,来自STB40或IRD44的信号直接被发送到TV显示器28以便进行呈现,而在STB40或IRD44与TV显示器28之间不具有进一步的视频解压缩。来自STB40或IRD44的音频仍可采用例如AC3的格式,其在扬声器22上播放之前需要解码,故音频可通过音频解码器64发送,如所示出的那样。类似地,来自ATSC地面源32的音频可采用AC3格式,因此可通过音频解码器64发送。来自DOCSIS解码器/解调器52的因特网视频可通过解复用器60和解码器62、64来发送,如所示出的那样。
现在参照图3,在方框66处,电视机12的用户使用屏幕上的用户界面(UI),可在首次加电时或在其后从菜单通过设置例程来设置电视机的各种特性。举例而言,对于电视机内的一个或多个可授权部件,可向用户询问其是否想要使用该部件。例如,这一点可通过向用户询问其是否希望自动扫描广播频谱以检测频道来隐含地完成,在这种情况下,可推断为将会需要ATSC解码器/解调器58和MPEG解码器62,因此,将会需要使用这些部件的许可。另外,在后一种情况下可推断为可能需要地面广播EPG的许可,而如果地面广播并当前没有被用作输入源的话,可能不需要这样的许可。
或者,再一次地,用户可以选择通过内置调制解调器24或从外部调制解调器48接收因特网视频,如果选择后者的话,不需要为因特网浏览器26获得许可;否则,需要使用因特网浏览器26的许可。
进行到方框68,对于基于方框66处的用户设置选择推断为将会需要的各个许可,电视机12通过例如因特网上传或者通过双向电缆系统等等回传对于该许可的请求。或者,如下面进一步阐释的那样,请求可通过电话做出。无论如何做出,该请求连同电视机的唯一标识(例如,电视机型号码和序列码的哈希值,在某些实施例中,如果希望的话,该哈希值被加密)通常标识出了基于方框66处的用户输入而需要许可的部件。请求可以在设置时做出。或者,请求可被缓存,以便在以后上传,例如在感测到适当的宽带连接时。在任何情况下,请求可被发送到位于预先存储的因特网地址的因特网服务器,或发送到电缆首端,或发送到另一适当的许可实体或代理。
方框70表示假设通过授权,则电视机12以许可信息的形式接收返回的许可,该许可信息典型地为这样的代码:其必须被输入到TV处理器18,以启用或解锁相关联的部件。或者,如下面参照图9进一步讨论的那样,相关联的部件可能需要软件代码来工作,且在该装置被发售时,与可许可特性有关的关键代码被省略,此关键代码在方框70中被供给,以启用该部件的可许可特性。在提供关键代码之前,该部件的可许可特性事实上不仅仅被封锁,而是实际上完全地缺失,尽管执行可许可特性所需的软件代码的其他部分随装置一起被发售。
在方框72处,代码可被自动输入到电视机的适当的内部部件,或者,代码可在电视机上显示,借助屏幕上显示的UI提示用户使用例如RC30来输入该代码。代码的正确输入激活电视机内的有关部件。方框74简单地表示出,许可费数据被维持并用于生成由许可代理机构开给电视机制造商的帐单信息,并且,还可用于生成市场数据,如下面所讨论的那样。在通过上面提到的手段上传到许可实体/代理之前,该数据可被保存在电视机中。
图4示出如果希望的话,可在用户设置例程之外做出自动许可判断。在图4所示的实例中,在决策菱形框76处开始,判断电视机中是否存在预定的物理条件,例如,特定类型的连接,从该连接可推断出将会需要何种可许可部件。在图4的实例中,物理条件为调谐器16的自动增益控制(AGC)电路中电压的存在,该电压可在例如在电视机底架处连接到地面天线34时或在来自墙壁的电缆连接到F型连接器38时出现。
当测试寻找的物理条件存在时,逻辑流向方框78,在此实例中,激活NTSC解调器54。这么做是认识到NTSC解调器典型地不需要许可,从而避免不必要地请求许可,调谐器16上的信号首先被测试,以便判断其是否为NTSC信号。决策菱形框80表示该测试可以为“噪音”是否在该信号中存在。
如果测试表明仅NTSC信号存在,则逻辑结束,否则,逻辑流向方框82,以便激活QAM解码器/解调器56。如果仅检测出QAM(通过QAM解码器/解调器56识别出QAM信号和/或无噪音),则逻辑结束,然而,如果QAM解码器/解调器56没有识别出信号,这表示该信号既不是QAM也不是(根据决策菱形框80)NTSC,因此推断该信号为需要使用ATSC解码器/解调器58的ATSC,ATSC解码器/解调器58在方框86处被激活,以便对该信号进行处理。在方框88处,由TV处理器18获得到上面介绍的许可实体/代理的上行链路,以便使用电视机的唯一ID获得上面所讨论的许可代码,在方框90处,该代码被接收并在必要时使用,以便允许使用ATSC解码器/解调器58。
或者,在处理器18被编程为向许可实体/代理发送以下消息的假设下,方框90处的步骤能被省略且ATSC解码器/解调器58立即被激活:将在激活ATSC解码器/解调器58之后生成许可账目。
又一次地,如图4中的虚线所示,逻辑可首先从决策菱形框84流向方框88、90以获得许可“解锁”代码,接着,流回到方框86以使用该代码激活ATSC解码器/解调器58,从而确保直到以下时刻之前不能使用ATSC解码器/解调器58:已通知许可实体/代理该ATSC解码器/解调器58的使用、已向针对必需的ATSC许可对电视机进行了认证,以及已判断在商业规则下应下载许可代码以完成该请求。
可被使用的、依据在发售电视机后自动获得所需部件许可以避免在电视机销售前为不必要的许可付费的附加示例性推断规则包括,如果存在ATSC,将会发现QAM的可能性较小;如果存在ATSC,ATSC频道的总数将会远远小于QAM频道的数目。另外,当从外部调制解调器48接收到信号时,音频视频节目不需要使用内置浏览器26,因此,通过以太网链路接收到视频而不在内部调制解调器24上接收信号可被推断为意味着未使用浏览器26。
图5-7示出了可在设置过程中使用以获得许可的逻辑。使用例如RC30,人们可输入92请求,以便从例如呈现在音频视频显示产品94(其可由电视机12实现)上的屏显设置菜单进行可用地面或有线或卫星频道的自动扫描。在响应中,AV显示产品发送对于例如ATSC解码器/解调器58的激活请求,该激活请求可包括调谐器ID和产品94ID和/或解码器/解调器58ID/产品94ID。假设许可实体/代理基于从产品94接收的信息判断该产品有权得到所请求部件的许可,在96处使用来自例如服务器98的一个或多个许可实体/代理的激活代码来执行ATSC解码器/解调器58的激活。如上面提到并将在下面参照图9更为全面地阐释的,电视机可在可许可部件中缺失实质性可执行代码的情况下发售,使得该部件不仅是非启用的,它们还是非功能性的。在这样的实施例中,根据许可请求发送到电视机的激活代码可包括已缺失的实质性代码,从而使得该部件不仅被激活,而且具有功能性。
许可实体/代理可保留日志,该日志显示哪些产品以及这些产品中的哪些部件已经被激活,基于该日志,可生成许可账目数据以向产品94的制造商给出对于被激活部件的许可账单。在任何情况下,100表示产品94接收激活响应,例如激活代码,从而在101处激活解调器/解码器58,其将产品94转变为具有处理ATSC能力的装置。可使用屏显通知向用户通知现在可使用产品94来观看ATSC节目。
图6示出替代性实施例。使用例如RC30,人们可输入102请求,以便从例如呈现在音频视频显示产品94(其可由电视机12实现)上的屏显设置菜单进行可用地面或有线或卫星频道的自动扫描。在响应中,在104处,准备包括许可实体/代理的电话号码的电话信息,借助例如用户界面或通过呈现在产品94上的方式,通知106用户该信息。通过说出该号码或将电话保持为邻近产品94上的扬声器,以便使用例如语音响应单元(VRU)110接收由电话检测的并用于自动拨打该号码的双音多频(DTMF)音,用户将该信息输入108到电话中。
另一替代性实施例涉及向服务器发送短消息服务(SMS)消息,以便发送上述信息,或涉及扫描电视机或部件上的条形码,以便向服务器发送请求信息,从而获得许可。在任何情况下,可在启动时和/或在运行期间周期性地完成对需要哪些许可的判断。
在112处由例如因特网服务器的许可实体/代理114产生调谐器激活,上面讨论的激活代码被发送116到VRU110,其向用户呈现该代码,以便在120处完成激活处理。在101处执行可许可部件(例如ATSC解码器/解调器58)的激活,其将产品94转变为具有处理ATSC能力的装置。可使用屏显通知向用户通知现在可使用产品94观看ATSC节目。
图7示出了另一替代性实施例。使用例如RC30,人们可输入122请求,以便从例如呈现在音频视频显示产品94(其可由电视机12实现)上的屏显设置菜单进行可用地面或有线或卫星频道的自动扫描。在响应中,在124处,准备包括许可实体/代理的因特网地址的因特网信息,借助例如用户界面或呈现在产品94上的方式,向用户通知126该信息。用户将该信息输入128到例如家用计算机127中。在130处由例如因特网服务器的许可实体/代理132产生调谐器激活,上面讨论的激活代码被发送134到该计算机,其借助例如web页面或电话向用户呈现136该代码,以便在138处完成激活处理。在101处执行可许可部件(例如ATSC解码器/解调器58)的激活,其将产品94转变为具有处理ATSC能力的装置。可使用屏显通知向用户通知现在可使用产品94观看ATSC节目。
作为替代的是,许可信息可使用短消息服务(SMS)代码或通过使用条形码来交换。为了使用条形码,电视机可包括对多种部件上的条形码进行成像的照相机,该条形码被处理器18解释为标识信息。
在某些实例中,如果仅需要有限数量(例如两个)NTSC频道,可请求并授予有限的且较为便宜的许可,以便允许通过NTSC解调器访问仅仅这两个频道,其中许可被请求并被授予例如立体声音频解码器的任何部件,传统的装置(典型地,VCR)使用这样的音频。
图8示出了可由许可实体/代理计算机执行的逻辑。在方框140处开始,来自例如电视机12的许可请求在例如任何上面介绍的服务器或首端上被接收,该服务器或首端用软件编程为执行图8所示的逻辑。在方框142处查找上面讨论的唯一ID,在决策菱形框144处,通过例如判断该装置是否在批准装置列表上,对请求装置进行授权。如果希望的话,可进一步判断对于作为请求主体的特定可许可部件的许可是否已经被授予,如果已被授予的话,则授权失败。如果请求装置被批准且对于作为请求主体的可许可部件的许可尚未被授予,逻辑移动到方框146,从而将例如激活代码的许可信息发送到请求装置。
方框148显示,依据向请求装置发送激活代码,生成许可账目数据。这种账目数据能够用于使得请求装置制造商向许可机构支付对于作为请求主体的部件的报酬。在方框150处,被授权装置数据库被修改,以便记录许可的授予。
可基于许可的授予在方框152处生成市场数据。举例而言,可将在具有可许可部件的情况下发售的装置的总数与授予请求装置的许可的数量进行比较,以便确定该部件相较于请求装置中的其他部件的使用率。例如,可能注意到,特定电视机型号的30%的发售装置曾经请求激活ATSC调谐器。此数据能够进一步关联到在装置注册过程中获得的人口统计学数据,使得例如能够获知,在请求激活TV调谐器的30%的装置中,哪一地理区域或者哪一人口年龄组等等更有可能请求这种激活。使用由购买者提交的装置注册信息,还可确定在请求激活ATSC调谐器的装置中,例如,90%的这些装置为第二台或第三台家用电视机,因此,其可被推断为缺少有线电视或卫星连接。
优选为,一旦可许可部件已经通过获得对其的许可而得到激活,其不能在随后由用户解除激活,从而避免对于同一部件的多重许可支付。相应地,TV处理器18可被编程为,至少在解除激活将需要另一个许可来重新激活的情况下,如果对于已经激活并许可的任何部件输入任何来自用户的解除激活命令的话,拒绝来自用户的解除激活命令。
许可的验证也可由TV处理器提供,使得例如如果电视机请求了部件许可但对应的特性在某个时间段内从未使用,则电视机能够撤销该许可请求,结果可退还任何许可费。
现在参照图9,示出了代表软件代码200的原理图,软件代码200可在例如图1的介质20上存储,用于由例如处理器18执行,从而执行示例性音频视频装置(电视机)的可许可功能。如所示出的,代码典型地具有入口点或模块202以及出口点或模块204。可在入口点与出口点202、204之间对另外的模块进行编程。在某些实施方式中,在入口点与出口点202、204之间编程的另外的模块在没有下面介绍的关键代码的情况下是无用的,并且,在没有下面介绍的关键代码的情况下,使用代码200根本不能执行任何功能。然而,在所示的实例中,从入口点202访问简化能力模块206,并且,在被执行之后,控制被传递给出口模块204。仅仅作为一个实例而言,如果与代码200有关的特性为对视频进行解码以及播放,简化能力模块206可被执行,以便仅仅以标准清晰度播放视频,典型地,这不需要许可,因此,在没有下面介绍的关键代码的情况下,软件代码200可被执行为提供简化能力功能,典型地为不需要许可的功能。
在任何情况下,一旦激活可许可功能,关键代码208以上面介绍的任意方式被提供给音频视频装置,并被复制到软件代码200中,以便允许执行可许可功能。在没有关键代码208的情况下,无论解除任何安全措施,可许可功能都不能被执行,这是因为关键代码必须存在并可在软件代码200内执行,并且在可许可功能被激活之前,关键代码条208是缺失的,这与其在代码200中存在但仅仅以某种方式禁用相反。这种区别可具有商业上的重要性,因为如果代码200在关键代码208存在但禁用的情况下发售,可应用一组商业规则,而如果代码200在关键代码208完全缺失的情况下发售,可应用另一组商业规则。
如虚线210所示,关键代码可在入口点和出口点202、204之间的适当的位置复制到软件代码200的序列之中,从而允许可许可功能的执行。或者,如虚线212、214所示,在所发售的软件代码200在许可激活之前具有由简化能力模块206提供的简化能力的情况下,关键代码208可替换简化能力模块206,其中如果期望的话,模块206仍在代码中存在,或者,如虚线214所示,从代码中移除。在用于说明的实例中,关键代码在与代码200的其余部分结合执行时,可提供高清晰度视频解码和播放。
除了上面介绍的用于输送缺失的关键代码的手段外,代码可嵌入广播电视信号中提供给装置,或者通过在例如USB闪存驱动器的可移除存储器介质上提供代码并接着将可移除存储器介质运输到装置购买者来提供,该购买者得到指示,以便将之连接到寻求升级的装置,并将关键代码下载到该装置中。当该装置为IP启用的装置时,关键代码可通过因特网从代码服务器传送,该代码服务器可以访问由该装置发送的装置ID和装置因特网地址,其中,装置ID和装置因特网地址作为许可激活请求的一部分。
不构成限制的是,对于下列技术的许可进行支付的需求可在电视机设置过程中或在随后通过自动检测这些技术是否正在使用来判断:
视频解码器
MPEG-2视频,具有光盘的MPEG-2视频,MPEG4高级视频编码(AVC),MPEG4Visual,MPEG视频编译码器(VC)1
音频解码器
统一AAC(MPEG2&4AAC)2声道,统一AAC(MPEG2&4AAC)3声道,杜比数字AC32声道,杜比数字AC35.1声道,杜比数字+(DD+)2声道,ProLogic2(环绕立体声),MPEG音频1&2层1,2,3)MP3,DTS_蓝光盘(BD)(2声道/2声道+数字输出),BBE声音,声修正系统(SRS)声音
EPG
Gemstar指南EPG,非Gemstar EPG(SI-EPG)
解调器
无线电工商协会(ARIB)(D+BS+CS),ATSC,数字视频广播(地面)(DVB-T)
包括数字版权管理(DRM)的其他部件
联合图像专家组(JPEG),数字传输内容保护(DTCP)/AACP/开放MG,HDMI,系统同步亮度控制(对比度增强),转换器控制器集成电路(IC),IEEE802.11无线许可,IEEE802.11(n),BD池(播放器),BD池(记录器),数字视频盘(DVD)格式,IEEE802.11/16,IEEE1394
软件
JAVA,MHP/Ginga交互TV软件,JAVA-BD组合,DivX编解码器软件,Windows媒体音频,Windows媒体视频,Windows媒体网络读取,Windows媒体数字版权管理(DRM),音频水印,Netfront,web浏览器软件
另外,产品加密密钥和测试加密密钥可用于允许对制造、预销售中的可许可部件进行测试,而不触发上面介绍的许可请求机制。电视机可被置于仅仅在制造或测试阶段使用的测试激活模式,如果希望的话,测试模式可具有硬接线超时。单个或复数个测试密钥可用于激活可许可部件,许可请求算法识别测试密钥,并对该识别做出响应不请求许可。测试激活模式可被硬接线为在单个电力循环之后解除激活,TV处理器可在此后不允许对测试模式解除激活。此后的可许可部件的激活要求与许可请求相关联的制造密钥。
尽管这里详细示出和介绍了特定的供给省略的关键代码部分以激活音频视频装置中的可许可部件,将会明了,本发明所包括的主题仅仅由权利要求限制。
Claims (14)
1.一种方法,包括:
在具有能够执行代码的处理器(18)的音频-视频显示装置(12)中接收初始软件代码,所述初始软件代码不包括关键代码(208),在没有所述关键代码(208)的情况下,所述处理器不能执行所述初始软件以进行许可的功能;
响应于对于所述许可的功能的许可已经被激活的判断(144),接收(146)与所述音频-视频显示装置中的所述初始软件代码协作的所述关键代码,以得到具有完整能力的代码;以及
使用(219)所述处理器来执行所述具有完整能力的代码,由此在所述音频-视频显示装置上进行所述许可的功能。
2.根据权利要求1所述的方法,其中,所述音频-视频显示装置为电视机。
3.根据权利要求1所述的方法,其中,所述初始软件代码具有入口点(202)和出口点(204),所述关键代码(208)被复制到所述初始软件代码中位于所述出口点和所述入口点之间的位置,以便得到所述具有完整能力的代码。
4.根据权利要求1所述的方法,其中,在没有所述关键代码的情况下,所述初始软件代码无论怎样都不具有可执行能力。
5.根据权利要求1所述的方法,其中,在没有所述关键代码的情况下,所述初始软件代码具有简化的可执行能力(206)。
6.根据权利要求5所述的方法,其中,所述初始软件代码包括简化能力模块(206),当接收到所述关键代码时,所述简化能力模块从运行中移除。
7.根据权利要求1所述的方法,其中,在没有所述关键代码(208)的情况下,无论怎样解除安全措施,所述许可的功能都不能执行,因为所述关键代码必须存在于软件代码内且可执行,并且,在对于所述许可的功能的许可被激活之前,所述关键代码从所述初始软件代码中缺失,这与所述关键代码在所述初始软件代码中存在但仅仅以某种方式禁用相反。
8.一种电视机(12),包括:
至少一个可许可部件(例如54-56等),在发售所述电视机之前尚未获得对于所述至少一个可许可部件的许可;
所述电视机中的处理器(18);
所述处理器执行与所述可许可部件相关联的软件代码,以便仅仅在关键代码(208)在所述软件代码中存在的情况下提供许可的功能,在所述关键软件不存在于所述软件代码中的情况下,即使所述处理器能够访问所述软件代码,所述软件代码也不能被所述处理器执行以提供所述许可的功能;以及
通信接口(例如24,48),该通信接口通信地耦合到所述处理器,并且,响应于对于所述许可的功能和/或对于所述可许可部件的许可已被激活的判断,接收所述关键代码。
9.根据权利要求8所述的电视机,其中,所述可许可部件为地面广播高级电视系统委员会(ATSC)解调器组件(58)。
10.根据权利要求8所述的电视机,其中,所述可许可部件为视频解码器(62)。
11.根据权利要求8所述的电视机,其中,所述可许可部件为音频解码器(64)。
12.根据权利要求8所述的电视机,其中,所述可许可部件为数字版权管理部件(例如40)。
13.根据权利要求8所述的电视机,其中,所述可许可部件为web浏览器(26)。
14.根据权利要求8所述的电视机,其中,所述可许可部件为电子节目指南(EPG)部件。
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- 2011-10-13 CN CN201110317510.8A patent/CN102469371B/zh active Active
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2012
- 2012-10-18 US US13/654,657 patent/US10049366B2/en active Active
- 2012-12-11 US US13/711,028 patent/US20160048843A9/en not_active Abandoned
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2013
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- 2013-06-26 US US13/927,337 patent/US8973159B2/en active Active
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