公开(公告)号：US6092107A

公开(公告)日：2000-07-18

申请号：US55934

申请日：1998-04-07

申请人： Alexandros Eleftheriadis ,  Yihan Fang ,  Hari Kalva ,  Atul Puri ,  Robert Lewis Schmidt

发明人： Alexandros Eleftheriadis ,  Yihan Fang ,  Hari Kalva ,  Atul Puri ,  Robert Lewis Schmidt

IPC分类号： G06T9/00 ,  H04H1/00 ,  H04H20/42 ,  H04H60/04 ,  H04L29/06 ,  H04N5/00 ,  H04N7/24 ,  H04N7/26 ,  H04N21/44 ,  H04N21/443 ,  H04N21/472 ,  H04N21/4728 ,  H04N21/8543 ,  H04N7/10 ,  H04H1/02

CPC分类号： H04N21/44012 ,  H04L29/06027 ,  H04L65/605 ,  H04L65/80 ,  H04N19/27 ,  H04N21/4431 ,  H04N21/4437 ,  H04N21/47205 ,  H04N21/47217 ,  H04N21/4728 ,  H04N21/8543 ,  H04H20/42

摘要： The invention provides a system and method allowing the adaptation of a nonadaptive system for playing/browsing coded audiovisual objects, such as the parametric system of MPEG-4. The system of the invention is referred to as the programmatic system, and incorporates adaptivity on top of the parametric system. The parametric system of MPEG-4 consists of a Systems Demultiplex (Demux) overseen by digital media integration framework (DMIF), scene graph and media decoders, buffers, compositer and renderer. Adaptations possible with the invention include interfaces in the categories of media decoding, user functionalities and authoring, thus allowing a number of enhanced functionalities in response to use input as well as graceful degradation in response to limited system resources. The invention includes a specification of an interfacing method in the form of an application programming interface (API). Hot object, directional, trick mode, transparency and other interfaces are specified.

摘要翻译： 本发明提供一种系统和方法，其允许适配播放/浏览编码的视听对象的非自适应系统，例如MPEG-4的参数系统。 本发明的系统被称为编程系统，并且在参数系统之上引入适应性。 MPEG-4的参数系统由数字媒体集成框架（DMIF），场景图和媒体解码器，缓冲区，合成器和渲染器监督的系统解复用（Demo）组成。 本发明可能的改进包括媒体解码，用户功能和创作类别中的接口，因此响应于有限的系统资源而允许响应于使用输入的许多增强的功能以及优雅的退化。 本发明包括以应用编程接口（API）形式的接口方法的规范。 指定热对象，方向性，技巧模式，透明度等接口。

公开(公告)号：US6044397A

公开(公告)日：2000-03-28

申请号：US55929

申请日：1998-04-07

申请人： Alexandros Eleftheriadis ,  Yihan Fang ,  Atul Puri ,  Robert Lewis Schmidt

发明人： Alexandros Eleftheriadis ,  Yihan Fang ,  Atul Puri ,  Robert Lewis Schmidt

IPC分类号： H04N7/24 ,  H04N7/26 ,  H04N7/52 ,  H04N21/234 ,  H04N21/44 ,  H04N21/443 ,  H04N21/472 ,  H04N7/10 ,  H04H1/02

CPC分类号： H04N21/23412 ,  H04N19/25 ,  H04N19/27 ,  H04N21/44012 ,  H04N21/4431 ,  H04N21/47205 ,  H04N7/52

摘要： The invention provides a standardized interface facility for MPEG-4 authoring, bitstream manipulation, editing and interpretation, with associated tools and interfaces to, resulting in coded bitstreams which are easier to test, check and debug while conforming to the MPEG-4 standard. The specified interfaces can also facilitate graceful degradation in the face of decreased resources by allowing editing of bitstreams. The specified interfaces can also allow creation of decodable bitstreams in response to the user requests either directly or indirectly embedded in audiovisual applications, as well as future services. The invention specifies a bitstream input/output package in the Java programming language to facilitates bitstream encoding and decoding of audio-visual media objects, especially when coding uses the MPEG-4 standard. The invention separates fixed length and variable length coding, and allows flexible parsing which offers the potential of optimized implementation as needed to aid real-time or near real-time operation.

摘要翻译： 本发明提供用于MPEG-4创作，比特流操纵，编辑和解释以及相关联的工具和接口的标准接口设备，导致编码比特流，其在符合MPEG-4标准的同时更容易测试，检查和调试。 指定的接口还可以通过允许编辑比特流来促进资源减少的正常退化。 指定的接口还可以响应于直接或间接嵌入在视听应用中的用户请求以及将来的服务来创建可解码比特流。 本发明指定了Java编程语言中的比特流输入/输出包，以便于音视频媒体对象的比特流编码和解码，特别是当编码使用MPEG-4标准时。 本发明分离固定长度和可变长度编码，并允许灵活的解析，根据需要提供优化实现的潜力，以帮助实时或接近实时操作。

公开(公告)号：US06512775B1

公开(公告)日：2003-01-28

申请号：US09297714

申请日：1999-07-02

申请人： Alexandros Eleftheriades ,  Yihan Fang

发明人： Alexandros Eleftheriades ,  Yihan Fang

IPC分类号： G06F1300

CPC分类号： H04N19/00 ,  H04N19/70

摘要： A parser (100) for parsing a digital bitstream which includes both data information and programming information, where it is based on the programming information contained in the bitstream, is disclosed. The parser (100) included a buffer (110), a mode selector (200), a control circuit (300), and a data processor (400). The mode selector (200) determines whether one or more bits of the bitstream segment represent a mode selection code, and selects a parser mode in response to the mode selection code. The control circuit (300) receives and stores bits from the buffer when the bitstream parser (100) is in a program mode in order to reprogram the control circuit (300) with newly received program information, and uses the program information to generate one or more parsing signals when the bitstream parser (100) is in data mode. The data processor (400) received bits from the buffer (110) and parsing signals from the command circuit (300) when the bitstream parser is in the data mode, and parses the received bits in accordance with the parsing signals.

摘要翻译： 公开了一种用于解析包括数据信息和编程信息的数字比特流的解析器（100），其中基于位流中包含的编程信息。 解析器（100）包括缓冲器（110），模式选择器（200），控制电路（300）和数据处理器（400）。 模式选择器（200）确定位流段段的一个或多个位是否表示模式选择代码，并且响应于模式选择代码选择解析器模式。 当比特流解析器（100）处于编程模式时，控制电路（300）接收并存储来自缓冲器的比特，以便用新接收的节目信息重新编程控制电路（300），并使用节目信息来生成一个或 当比特流解析器（100）处于数据模式时，更多的解析信号。 当比特流解析器处于数据模式时，数据处理器（400）从缓冲器（110）接收比特并解码来自命令电路（300）的信号，并根据解析信号解析接收到的比特。