专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO0041056A3 DIGITAL CONTENT DISTRIBUTION SYSTEM AND METHOD 审中-公开
标题翻译：数字内容分发系统及方法
公开(公告)号：WO0041056A3
公开(公告)日：2000-09-28
申请号：PCT/US0000077
申请日：2000-01-05
申请人： DIGITAL VIDEO EXPRESS LP , SCHUMANN ROBERT , GOLDSCHLAG DAVID , KRAVITZ DAVID , IU SIU LEONG , MERCIER GUILLAUME , WHITTEMORE RICHARD , BERGERON MICHAEL , EHRHARDT JACK , VITKUS RICHARD
发明人： SCHUMANN ROBERT , GOLDSCHLAG DAVID , KRAVITZ DAVID , IU SIU-LEONG , MERCIER GUILLAUME , WHITTEMORE RICHARD , BERGERON MICHAEL , EHRHARDT JACK , VITKUS RICHARD
IPC分类号： G06F1/00 , H04N5/00 , H04N7/16 , H04N7/24 , H04N7/167
CPC分类号： H04N21/4344 , H04N21/23106 , H04N21/23608 , H04N21/4147 , H04N21/4325 , H04N21/8455
摘要： A content distribution system and method which prevents unauthorized access to secured content such as movies and music. The apparatus includes a source, a receiver, an authorized security device such as a conditional access module (CAM) for decrypting authorized content, an output device for outputting content and a backend for managing accounts and system operations. One aspect of this invention provides a mechanism for providing secured content on a medium such as a DVD optical disc. These devices may verify that there is authorization to play the secured content, add watermarks to the secured content, convert the secured content to a displayable form and provide a means for preventing output of the secured content.
摘要翻译：一种内容分发系统和方法，其防止未经授权的访问诸如电影和音乐的安全内容。该装置包括源，接收器，授权安全设备，例如用于解密授权内容的条件访问模块（CAM），用于输出内容的输出设备和用于管理帐户和系统操作的后端。本发明的一个方面提供了一种用于在诸如DVD光盘的介质上提供安全内容的机制。这些设备可以验证是否有授权播放安全内容，将水印添加到安全内容，将安全内容转换成可显示的形式，并提供防止安全内容的输出的手段。

2. 发明专利

AU4408499A Compressed video graphics system and methodology 未知
公开(公告)号：AU4408499A
公开(公告)日：1999-12-30
申请号：AU4408499
申请日：1999-06-07
申请人： DIGITAL VIDEO EXPRESS LP
发明人： SCHUMANN ROBERT W , BERGERON MICHAEL , MIKULA JO JANET , EHRHARDT JACK , HARRISON MARK O
IPC分类号： G06T11/60 , G11B27/034 , G11B27/10 , G11B27/34 , H04N7/26 , H04N7/36 , H04N7/50
摘要： Graphics in the same compressed digital format as that of a target video image are combined, on the fly, by an application. Combination is performed by frame modification or overlay techniques. In the preferred embodiment, the compressed video image format conforms to an MPEG-2 compression standard. A base image is produced by an I-frame, and MPEG-2 graphics elements formed either by modifying the I-frame or overlaying the I-frame with one or more P-frames.

3. 发明专利

AU4317999A System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies 未知
公开(公告)号：AU4317999A
公开(公告)日：1999-12-30
申请号：AU4317999
申请日：1999-06-07
申请人： DIGITAL VIDEO EXPRESS LP
发明人： SCHUMANN ROBERT W , IU SIU-LEONG , BUGWADIA KOBAD , MERCIER GUILLAUME , RAMADOSS SHIVA , BERGERON MICHAEL , EHRHARDT JACK
IPC分类号： H04N5/91 , G11B20/10 , G11B20/12 , H04N5/913 , H04N5/92 , H04N7/26 , H04N9/82
摘要： To enable the source of an unauthorized copy of an information-bearing medium, such as a video DVD, to be traced, a compressed digital signal stream to be stored on the medium is altered to include "running marks," that comprise pixel blocks changing in position frame by frame and encoded with information designating where and when the copy was made. The medium under test is played back synchronously with a reference medium containing the locations of the running marks together with original video. The source of copying message is advantageously encrypted and scrambled to avoid detection or alteration by a copyist. The message preferably is spread, for example into a spread spectrum carrier, to enhance discrimination among a large number of sources and enable demodulation in the presence of noise.

4. 发明专利

AU3343400A Digital content distribution system and method 未知
公开(公告)号：AU3343400A
公开(公告)日：2000-07-24
申请号：AU3343400
申请日：2000-01-05
申请人： DIGITAL VIDEO EXPRESS LP
发明人： SCHUMANN ROBERT , GOLDSCHLAG DAVID , KRAVITZ DAVID , IU SIU-LEONG , MERCIER GUILLAUME , WHITTEMORE RICHARD , BERGERON MICHAEL , EHRHARDT JACK , VITKUS RICHARD
IPC分类号： G06F1/00 , H04N5/00 , H04N7/16 , H04N7/24

5. 发明专利

AU2959700A Content packet distribution system 未知
公开(公告)号：AU2959700A
公开(公告)日：2000-07-24
申请号：AU2959700
申请日：2000-01-05
申请人： DIGITAL VIDEO EXPRESS LP
发明人： SCHUMANN ROBERT , GOLDSHLAG DAVID , KRAVITZ DAVID , IU SIU-LEONG , MERCIER GUILLAUME , WHITTEMORE RICHARD , BERGERON MICHAEL , EHRHARDT JACK , VITKUS RICHARD
IPC分类号： G06F1/00 , H04N5/00 , H04N7/16 , H04N7/24

6. 发明申请

WO2004051458A2 SYSTEM AND METHOD FOR TRUE RANDOM NUMBER GENERATION 审中-公开
标题翻译：用于真实随机数生成的系统和方法
公开(公告)号：WO2004051458A2
公开(公告)日：2004-06-17
申请号：PCT/IB0305265
申请日：2003-11-18
申请人： KONINKL PHILIPS ELECTRONICS NV , MITCHUM SAM , EHRHARDT JACK , LESTER BILL
发明人： MITCHUM SAM , EHRHARDT JACK , LESTER BILL
IPC分类号： G06F7/58
CPC分类号： G06F7/588
摘要： There is provided a system and method for providing an entirely digital and/or digitally synthesizable true random number generator for incorporation on integrated circuits using any standard logic synthesis tool or comparable technique. The system and method has at least a microprocessor operating at a first frequency, at least one counter for generating bits, at least one shifter for scrambling bits, at least one first oscillator for cooperating with the at least one counter; and at least one second oscillator for cooperating with the at least one shifter. The system being configured to provide a frequency perturbation based on digital input signals initialized via the microprocessor.
摘要翻译：提供了一种用于提供全数字和/或数字可合成的真随机数发生器的系统和方法，用于使用任何标准逻辑合成工具或类似技术来并入集成电路。该系统和方法具有至少一个以第一频率工作的微处理器，至少一个用于产生比特的计数器，至少一个用于加扰比特的移位器，至少一个第一振荡器，用于与至少一个计数器协作; 以及至少一个第二振荡器，用于与至少一个移位器协作。该系统被配置为基于经由微处理器初始化的数字输入信号来提供频率扰动。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式