公开(公告)号：US20050163318A1

公开(公告)日：2005-07-28

申请号：US10514968

申请日：2003-05-09

Applicant: David Duffield ,  Mark Schulte ,  Michael Deiss

Inventor： David Duffield ,  Mark Schulte ,  Michael Deiss

IPC: H04L9/00 ,  H04N7/167

CPC classification number: H04N7/1675 ,  H04N21/4181 ,  H04N21/4367 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4623 ,  H04N21/835

Abstract: A method for protecting the digital output signal of a security module, comprising the steps of: receiving a scrambled digital signal from a source external to said security module, recovering at least one transport scramble control flag from the scrambled digital signal, descrambling said received scrambled signal to generate a descrambled signal, monitoring the at least one transport scramble control flag, generating a scrambling key in response to said monitored at least one transport scramble control flag, and scrambling said descrambled signal using said scrambling key to generate a re-scrambled signal. The present invention also includes a conditional access system comprising a host device and a security device coupled to the host device, such that the security device includes at least one transport scramble control flag modification circuit. By monitoring the transport scramble control flag as content passes through the security module, protection of the content can be securely maintained.

Abstract translation: 一种用于保护安全模块的数字输出信号的方法，包括以下步骤：从所述安全模块外部的源接收加扰的数字信号，从所述加密的数字信号中恢复至少一个传输加扰控制标志，对所述接收的加扰的 信号以产生解扰信号，监测所述至少一个传输加扰控制标志，响应于所述监控的至少一个传输加扰控制标志产生加扰密钥，以及使用所述加扰密钥对所述解扰信号进行加扰，以产生重加扰信号 。 本发明还包括条件访问系统，其包括主机设备和耦合到主机设备的安全设备，使得安全设备包括至少一个传输加扰控制标志修改电路。 当内容通过安全模块时监视传输加扰控制标志，可以可靠地保护内容的保护。

公开(公告)号：US20060286489A1

公开(公告)日：2006-12-21

申请号：US11439859

申请日：2006-05-24

Applicant: David Duffield ,  Ion Vizireanu ,  Mike Derrenberger ,  Yousef Nijim

Inventor： David Duffield ,  Ion Vizireanu ,  Mike Derrenberger ,  Yousef Nijim

IPC: G03C7/46

CPC classification number: G03C11/02 ,  G03D15/003 ,  G06T1/0071 ,  G06T2201/0051 ,  G06T2201/0061

Abstract: The present invention provides a system and method for marking, coding and tracking a film print in an efficient, adaptive and customized manner for providing unique and robust identification of each individual film print and facilitating accurate tracking of the origin of a pirated copy. A film print to be marked is calibrated and provided in computer-readable form for input to a prescreening device. The calibrated film print is reviewed and ideal locations on each frame of the film print are chosen for applying a mark. A unique coding scheme is generated for each desired print. If a pirate copy is found, all marks are located and a matching serial number (e.g., coding scheme) is determined for the pirated copy based on marks found in the pirate copy when compared to a database storing film print mark information generated during the marking and coding process.

Abstract translation: 本发明提供了一种用于以有效，自适应和定制的方式标记，编码和跟踪胶片印刷的系统和方法，以提供每个单独的胶片印刷品的独特且鲁棒的识别，并有助于准确跟踪盗版副本的来源。 要标记的胶片被校准并以计算机可读形式提供，以便输入到预筛选装置。 评估校准的胶片打印，并选择胶片打印的每个框架上的理想位置来应用标记。 为每个期望的打印生成唯一的编码方案。 如果发现盗版副本，则与存储在标记期间生成的胶片打印标记信息的数据库相比较，基于在盗版副本中找到的标记，确定所有标记位置并且针对盗版副本确定匹配的序列号（例如，编码方案） 和编码过程。

公开(公告)号：US20060291722A1

公开(公告)日：2006-12-28

申请号：US10567954

申请日：2004-07-28

Applicant: David Duffield ,  Mark Schultz ,  Michael Sterling

Inventor： David Duffield ,  Mark Schultz ,  Michael Sterling

IPC: G06K9/34

CPC classification number: G03B21/26 ,  G03B21/14 ,  G11B20/18 ,  H04N5/74 ,  H04N5/913 ,  H04N9/3194 ,  H04N2005/91392

Abstract: A method and a system for identifying a copy of an image sequence which is presented on a screen. At least one identifier distinct from the image sequence can be projected through the screen such that the identifier is displayed using visible light along with the image sequence. The identifier can be presented at periodic intervals and can define a theater location, a date and/or a time. A color and/or an illumination of at least a portion of the image sequence presentation can be measured. Based on the measured illumination and/or color, a projection brightness and/or color can be determined for the identifier. Also, a location on the screen through which the identifier should be projected can be determined.

Abstract translation: 一种用于识别呈现在屏幕上的图像序列的副本的方法和系统。 可以通过屏幕投射与图像序列不同的至少一个标识符，使得使用可见光与图像序列一起显示标识符。 标识符可以周期性地呈现，并且可以定义剧院位置，日期和/或时间。 可以测量图像序列呈现的至少一部分的颜色和/或照明。 基于测量的照明和/或颜色，可以为标识符确定投影亮度和/或颜色。 此外，可以确定屏幕上应该投影标识符的位置。

公开(公告)号：US20050198282A1

公开(公告)日：2005-09-08

申请号：US10517089

申请日：2003-06-05

Applicant: Thomas Stahl ,  David Duffield ,  Eric Carlsgaard

Inventor： Thomas Stahl ,  David Duffield ,  Eric Carlsgaard

IPC: G06F21/00 ,  G06F12/14 ,  G06F15/173 ,  G06Q30/06 ,  H04L12/56 ,  H04L29/06 ,  H04L29/12 ,  H04N7/16 ,  H04N7/24

CPC classification number: H04L63/10 ,  G06F21/10 ,  G06Q30/06 ,  H04L29/06027 ,  H04L29/12009 ,  H04L29/12018 ,  H04L61/10 ,  H04L65/4076 ,  H04L65/607 ,  H04L2463/101 ,  H04N7/163 ,  H04N21/4345 ,  H04N21/43615 ,  H04N21/4627 ,  H04N21/8355

Abstract: An apparatus and a method for controlling distribution of digital content from an device attached to a network to another device outside the network. The device receives a digital signal containing content, the digital signal having an authorization field indicative of a first transport mode authorizing the content for distribution outside the network, and of a second transport mode wherein the content is not authorized for transmission outside the network. The method comprises the steps of receiving location information of a router on the network for routing content to devices outside the network, receiving destination data indicative of location information associated with a destination device to which the device intends to distribute the content, determining whether the destination device is outside the network based on the router location information and the received destination data examining the authorization field and, inhibiting transmission of the content if the destination device is outside the network and the digital signal is in the inhibit mode.

Abstract translation: 一种用于控制从附接到网络的设备到网络外部的另一设备的数字内容分发的设备和方法。 该设备接收包含内容的数字信号，数字信号具有指示授权内容在网络外部分发的第一传输模式的授权字段，以及其中该内容不被授权在网络外传输的第二传输模式。 该方法包括以下步骤：在网络上接收路由器的位置信息，将内容路由到网络外部的设备，接收指示与设备要分发内容的目的地设备相关联的位置信息的目的地数据，确定目的地 设备基于路由器位置信息和接收的检查授权字段的目的地数据在网络外部，并且如果目的地设备在网络外部且数字信号处于禁止模式，则禁止内容的传输。

公开(公告)号：US20070206020A1

公开(公告)日：2007-09-06

申请号：US11578222

申请日：2004-04-27

Applicant: David Duffield ,  William Hogue

Inventor： David Duffield ,  William Hogue

IPC: G06T1/00

CPC classification number: G06T1/0085 ,  G06T2201/0051 ,  H04N5/913 ,  H04N2005/91392

Abstract: An apparatus for marking a film copy includes a mapper and a coder. The maper maps a print identifier to be associated with the film copy into a serial number comprising a sequence of J numbers. The coder creates at least two-error correcting numbers, e.g. Y and Z, as a function of one, or more, of the J numbers. The film copy is then marked in accordance with L numbers, which comprise at least the two-error correcting numbers Y and Z.

Abstract translation: 一种用于标记胶卷的设备包括一个映射器和一个编码器。 映射器将与胶片副本相关联的打印标识符映射成包括J个序列的序列号。 编码器创建至少两个纠错数字，例如， Y和Z，作为一个或多个J数的函数。 然后根据包括至少两个错误校正号码Y和Z的L号码来标记电影复制品。

公开(公告)号：US20060262280A1

公开(公告)日：2006-11-23

申请号：US10567941

申请日：2004-07-28

Applicant: David Duffield ,  Mark Schultz ,  Michael Sterling

Inventor： David Duffield ,  Mark Schultz ,  Michael Sterling

IPC: G03B21/00

CPC classification number: G03B21/26 ,  G03B21/14 ,  G11B20/18 ,  H04N5/74 ,  H04N5/913 ,  H04N9/3194 ,  H04N2005/91392

Abstract: A method and a system for identifying a copy of an image sequence that is presented on a screen. At least one identifier distinct from the image sequence is projected such that the identifier is displayed on the screen using visible light along with the image sequence. The identifier can be presented at periodic intervals and can define a theater location, a date and/or a time. A color and/or an illumination of at least a portion of the image sequence presentation can be measured. Based on the measured illumination and/or color, a projection brightness and/or color can be determined for the identifier. Also, a location on the screen where the identifier should be projected can be determined.

Abstract translation: 一种用于识别呈现在屏幕上的图像序列的副本的方法和系统。 投影与图像序列不同的至少一个标识符，使得标识符与图像序列一起使用可见光显示在屏幕上。 标识符可以周期性地呈现，并且可以定义剧院位置，日期和/或时间。 可以测量图像序列呈现的至少一部分的颜色和/或照明。 基于测量的照明和/或颜色，可以为标识符确定投影亮度和/或颜色。 此外，可以确定屏幕上应该投影标识符的位置。

公开(公告)号：US20070101357A1

公开(公告)日：2007-05-03

申请号：US10580806

申请日：2004-01-22

Applicant: David Duffield

Inventor： David Duffield

IPC: H04N7/167 ,  H04N7/16

CPC classification number: H04N21/2543 ,  H04N7/163 ,  H04N7/1675 ,  H04N7/17318 ,  H04N21/2221 ,  H04N21/23476 ,  H04N21/2541 ,  H04N21/2542 ,  H04N21/26606 ,  H04N21/26613 ,  H04N21/4382 ,  H04N21/44055 ,  H04N21/4623 ,  H04N21/4627 ,  H04N21/47202 ,  H04N21/47815 ,  H04N21/8355

Abstract: The invention relates generally to an apparatus and a method for securing impulse program purchases from conditional access network broadcast systems. The invention include providing entitlement codes to a set top box having security modules, located at a customer's corresponding program listening and viewing system. A customer desiring to makes an impulse purchase communicates the request to a broadcast system. In one embodiment of the invention, a message from the customer's access device transmits to a broadcast system's headend to indicate the desired purchase. In response to receiving an impulse purchase signal, the headend creates and sends an authorization code that thereafter authorizes the set top box to decode the impulse purchased program when it is received. The authorization code for a given impulse purchased program is only transmitted to set top boxes that actually purchase the program in contrast to the prior art system, where the decryption codes for impulse purchases are pre loaded into the security module before the event is purchased. The invention also generates data required for a billing record and transmits this data to a billing center.

Abstract translation: 本发明一般涉及用于从条件接收网络广播系统确保脉冲节目购买的装置和方法。 本发明包括向具有安全模块的机顶盒提供权利代码，该机顶盒位于客户的相应的程序收听和观看系统。 希望进行冲动购买的客户将请求传达给广播系统。 在本发明的一个实施例中，来自客户访问设备的消息传送到广播系统的头端以指示所需的购买。 响应于接收到脉冲购买信号，头端创建并发送授权代码，此后授权机顶盒在接收到脉冲购买的程序时进行解码。 相对于现有技术的系统，给定脉冲购买程序的授权代码仅被传送到实际购买该程序的机顶盒，其中用于脉冲购买的解密代码在购买事件之前被预加载到安全模块中。 本发明还生成计费记录所需的数据，并将该数据发送到计费中心。

公开(公告)号：US20050238167A1

公开(公告)日：2005-10-27

申请号：US10833263

申请日：2004-04-27

Applicant: David Duffield ,  William Hogue

Inventor： David Duffield ,  William Hogue

IPC: G06K9/00 ,  H04N5/913

CPC classification number: H04N5/913 ,  H04N2005/91392

Abstract: A method for uniquely identifying a copy of a motion picture disposed on a medium. A first sequence and a second sequence of the motion picture each can be selectively marked with an identifier mark to collectively define a uniquely identifiable marking pattern. A third sequence of the motion picture can be selectively marked with an error correction mark correlating to the uniquely identifiable marking pattern. The uniquely identifiable marking pattern is determinable absent at least one of the identifier marks by processing the error correction mark and remaining ones of the identifier marks. The error correction mark can be determined from values correlating the identifier marks.

Abstract translation: 一种用于唯一地识别布置在介质上的电影的副本的方法。 运动画面的第一序列和第二序列各自可以选择性地标记有标识符标记，以共同定义唯一可识别的标记图案。 运动画面的第三个序列可以选择性地标记与唯一可识别的标记图案相关的纠错标记。 唯一可识别的标记图案是通过处理错误校正标记和标识符标记中的剩余标记标记来确定的，不存在至少一个标识符标记。 误差校正标记可以根据与标识符标记相关的值来确定。

公开(公告)号：US20050160448A1

公开(公告)日：2005-07-21

申请号：US10490679

申请日：2001-09-28

Applicant: David Duffield ,  Jeffrey Cooper ,  Mohan Narasimhan

Inventor： David Duffield ,  Jeffrey Cooper ,  Mohan Narasimhan

IPC: G06K19/07 ,  G06K17/00 ,  H04N7/16 ,  H04N21/418

CPC classification number: H04N21/4181 ,  H04N7/163

Abstract: A smart card UART which includes a memory capable of storing a 5 byte command string along with error data. Inclusion of a memory in the UART allows the smart card to store serial communications commands received from a serial interface until the smart card processor is able to process such commands.

Abstract translation: 智能卡UART，其包括能够存储5字节命令串以及错误数据的存储器。 在UART中包含存储器允许智能卡存储从串行接口接收的串行通信命令，直到智能卡处理器能够处理这样的命令。