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    • 3. 发明授权
    • System and method of organizing data to facilitate access and streaming
    • 组织数据的系统和方法,以便于访问和流式传输
    • US07428547B2
    • 2008-09-23
    • US10785905
    • 2004-02-24
    • Andrea BassoAlexandros EleftheriadisHari KalvaAtul PuriRobert Lewis Schmidt
    • Andrea BassoAlexandros EleftheriadisHari KalvaAtul PuriRobert Lewis Schmidt
    • G06F7/00
    • H04L65/607G06F17/30017G11B20/1217G11B27/105G11B27/3027G11B2220/213G11B2220/2545H04L29/06027H04N21/23412H04N21/44012Y10S707/99932Y10S707/99942Y10S707/99943
    • File formats systems and methods are disclosed that provide a framework that integrates concepts, such as objects based audio-visual representation, meta-data and object oriented programming, to achieve a flexible and generic representation of the audiovisual information and the associated methods to operate on the audiovisual information. A system and method are disclosed for storing data processed from presentation data. The data is stored according to a method comprising coding input presentation data by identifying objects from within the presentation data, coding each object individually and organizing the coded data into access layer data units. The access layer data units are stored throughout a plurality of segments, each segment comprising a segment table in a header portion thereof and those access layer data units that are members of the respective segment, there being one entry in the segment table for each access layer data unit therein. A plurality of extended segments are also stored, each of the extended segments further comprising one or more of the access layer data units that include protocol specific data, the extended segments each represented by a extended segment header. The data of an accessible object is also stored, including an accessible object header and identifiers of the plurality of extended segments, each of the extended segments being a member of the same object.
    • 公开了文件格式的系统和方法,其提供集成诸如基于对象的视听表示,元数据和面向对象程序之类的概念的框架,以实现视听信息的灵活和通用表示以及相关的操作方法 视听信息。 公开了一种用于存储从演示数据处理的数据的系统和方法。 根据包括通过从呈现数据内识别对象来编码输入呈现数据的方法来存储数据,分别编码每个对象并将编码数据组织成接入层数据单元。 接入层数据单元被存储在多个段中,每个段包括在其头部分中的段表,作为各个段的成员的那些接入层数据单元,在每个接入层的段表中有一个条目 数据单元。 还存储多个扩展段,每个扩展段还包括包括协议特定数据的接入层数据单元中的一个或多个,扩展段由扩展段标题表示。 还存储可访问对象的数据,包括可访问对象标题和多个扩展段的标识符,每个扩展段是同一对象的成员。
    • 4. 发明授权
    • Method and system for client-server interaction in interactive communications using server routes
    • 使用服务器路由的交互式通信中客户端 - 服务器交互的方法和系统
    • US07149770B1
    • 2006-12-12
    • US09240509
    • 1999-01-29
    • Hari KalvaAlexandros Eleftheriadis
    • Hari KalvaAlexandros Eleftheriadis
    • G06F15/16
    • H04L67/125H04L67/38H04N21/234318
    • In an interactive communication system based on MPEG-4, Command descriptors along with Command Route nodes or Server Routes in the scene description can be used to support application-specific interactivity. Content selection can be supported by specifying the presentation in command parameters, with the command ID indicating that the command is a content selection command. An initial scene can be created with several images and with text that describes a presentation associated with an image. Associated with each image and the corresponding text is a content selection descriptor. When a user clicks on an image, the client transmits the command containing the selected presentation and the server starts a new presentation. The technique can be used in any application context, as generally as HTTP and CGI can be used to implement any server-based application functionality.
    • 在基于MPEG-4的交互式通信系统中,命令描述符以及场景描述中的命令路由节点或服务器路由可用于支持应用特定的交互。 可以通过在命令参数中指定呈现来支持内容选择,其中命令ID指示该命令是内容选择命令。 可以使用多个图像和描述与图像相关联的演示文稿来创建初始场景。 与每个图像相关联并且相应的文本是内容选择描述符。 当用户点击图像时,客户端发送包含所选演示文稿的命令,并且服务器启动新的演示文稿。 该技术可以在任何应用程序上下文中使用,通常可以使用HTTP和CGI来实现任何基于服务器的应用程序功能。
    • 7. 发明申请
    • Video transcoding
    • 视频转码
    • US20080137741A1
    • 2008-06-12
    • US11999501
    • 2007-12-05
    • Hari Kalva
    • Hari Kalva
    • H04N7/26
    • H04N19/40H04N19/107H04N19/159H04N19/61
    • A method for receiving encoded H.264 video signals and transcoding the received encoded signals to encoded MPEG-2 video signals, including the following steps: decoding the encoded H.264 video signals to obtain uncompressed video signals and to also obtain H.264 feature signals; deriving MPEG-2 feature signals from the H.264 feature signals; and producing the encoded MPEG-2 video signals using the uncompressed video signals and the MPEG-2 feature signals. The H.264 feature signals include H.264 macro block modes and include H.264 motion vectors.
    • 一种用于接收编码的H.264视频信号并将接收到的编码信号转码为编码的MPEG-2视频信号的方法,包括以下步骤:解码编码的H.264视频信号以获得未压缩视频信号,并获得H.264特征 信号; 从H.264特征信号中导出MPEG-2特征信号; 以及使用未压缩视频信号和MPEG-2特征信号产生编码的MPEG-2视频信号。 H.264特征信号包括H.264宏块模式,并包括H.264运动矢量。
    • 8. 发明授权
    • Object-based audio-visual terminal and bitstream structure
    • 基于对象的视听终端和比特流结构
    • US07199836B1
    • 2007-04-03
    • US09367433
    • 1998-02-13
    • Alexandros EleftheriadisHari Kalva
    • Alexandros EleftheriadisHari Kalva
    • H04N5/262
    • H04N21/23412G11B2020/10759H04N21/234318H04N21/4307H04N21/4331H04N21/434H04N21/44004H04N21/44012
    • As information to be processed at an object-based video or audio-visual (AV) terminal, an object-oriented bitstream includes objects, composition information, and scene demarcation information. Such bitstream structure allows on-line editing, e.g. cut and paste, insertion/deletion, grouping, and special effects. In the interest of ease of editing, AV objects and their composition information are transmitted or accessed on separate logical channels (LCs). Objects which have a lifetime in the decoder beyond their initial presentation time are cached for reuse until a selected expiration time. The system includes a de-multiplexer (1), a controller (2) which controls the operation of the AV terminal, input buffers (3), AV objects decoders (4), buffers (4′) for decoded data, a composer (5), a display (6), and an object cache (7).
    • 作为要在基于对象的视频或视听(AV)终端处理的信息,面向对象的比特流包括对象,合成信息和场景分界信息。 这样的比特流结构允许在线编辑,例如 剪切和粘贴,插入/删除,分组和特殊效果。 为了便于编辑,AV对象及其合成信息在单独的逻辑信道(LC)上传输或访问。 在解码器中具有超过其初始呈现时间的寿命的对象被缓存以供重用,直到选定的到期时间为止。 该系统包括解复用器(1),控制AV终端的操作的控制器(2),输入缓冲器(3),AV对象解码器(4),解码数据的缓冲器(4'),作曲者 5),显示器(6)和对象缓存(7)。