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61. 发明公开

EP1348302A1 METHOD AND SYSTEM FOR CONTROL OF BROADCAST CONTENT ACCESS 有权转让
标题翻译：方法和系统，以控制广播结束TABLE ACCESS
公开(公告)号：EP1348302A1
公开(公告)日：2003-10-01
申请号：EP01272786.3
申请日：2001-12-24
申请人： NDS Limited
发明人： TSURIA, Yossi , SHLISSEL, Moshe , DARSHAN, Ezra , WALD, Stephanie , WACHTFOGEL, Reuven , ROZENHAUZ, Aharon , SANDLER, Leonid
IPC分类号： H04N7/16 , H04N7/167 , H04N5/00
CPC分类号： H04N21/44016 , H04N7/165 , H04N7/1675 , H04N21/2187 , H04N21/23424 , H04N21/2543 , H04N21/4524 , H04N21/4623 , H04N21/4627
摘要： A method for controlling access to content, including preventing access to content that corresponds to a blacked out event, until at least one of a time criterion and payment criterion is met. Related methods and apparatus are also disclosed.

62. 发明公开

EP1180768A2 Advanced television system 审中-公开
标题翻译： Fortgeschrittenes Fernsehsystem
公开(公告)号：EP1180768A2
公开(公告)日：2002-02-20
申请号：EP01204250.3
申请日：1999-06-23
申请人： NDS Limited
发明人： Wachtfogel, Reuven , Richardson, David , Kipnis, Shlomo , Maissel, Jonathan , Tsuria, Yossef , Silver, Yonatan
IPC分类号： G11B20/00 , G11B27/10 , H04N5/44
CPC分类号： H04N21/482 , G11B27/002 , G11B27/024 , G11B27/032 , G11B27/034 , G11B27/105 , G11B27/11 , G11B27/28 , G11B27/329 , G11B27/34 , G11B2220/20 , G11B2220/213 , G11B2220/216 , G11B2220/2516 , G11B2220/2545 , G11B2220/2562 , G11B2220/2575 , G11B2220/455 , G11B2220/90 , H04N5/4401 , H04N5/445 , H04N5/44513 , H04N5/44543 , H04N5/45 , H04N5/76 , H04N5/765 , H04N5/775 , H04N5/781 , H04N5/782 , H04N5/783 , H04N5/84 , H04N5/85 , H04N7/0887 , H04N7/163 , H04N7/17318 , H04N9/7921 , H04N9/8042 , H04N21/2221 , H04N21/23424 , H04N21/25891 , H04N21/4104 , H04N21/4147 , H04N21/42204 , H04N21/4316 , H04N21/4325 , H04N21/4331 , H04N21/4334 , H04N21/44016 , H04N21/44222 , H04N21/4532 , H04N21/454 , H04N21/4622 , H04N21/466 , H04N21/47 , H04N21/47211 , H04N21/47214 , H04N21/4722 , H04N21/4755 , H04N21/478 , H04N21/4782 , H04N21/488 , H04N21/6543 , H04N21/6587 , H04N21/812 , H04N21/84 , H04N21/8456 , H04N21/8586
摘要： Apparatus and a method for digitally recording a program are disclosed. The apparatus comprises a memory (55) for digitally storing a program. The apparatus also comprises a means (145) for controlling at least one of, (a) whether to record a program in said memory (55); and (b) whether to retrieve a program stored in said memory (55). The determination in cases (a) and (b) is based, at least in part, on a parental control rating assigned to at least a portion of the program.
摘要翻译：公开了用于数字记录程序的装置和方法。该装置包括用于数字地存储程序的存储器（55）。所述装置还包括用于控制（a）是否在所述存储器中记录程序中的至少一个的装置）以及（b）是否检索存储在所述存储器（55）中的程序。情况（a）和（b）的决定至少部分地基于分配给该计划的至少一部分的家长控制评级。

63. 发明授权

EP0894401B1 DIGITAL VIDEO BROADCAST SYSTEM 失效
标题翻译：数字视频传输系统
公开(公告)号：EP0894401B1
公开(公告)日：2001-09-12
申请号：EP97916560.2
申请日：1997-04-15
申请人： NDS LIMITED
发明人： THEXTON, Nicholas , GOLD, Martin , FELDMAN, Yurai
IPC分类号： H04N7/16
CPC分类号： H04N21/2362 , H04N7/16 , H04N7/165 , H04N21/242 , H04N21/262 , H04N21/26216 , H04N21/2625
摘要： The invention provides a method for facilitating the management and running of a digital video broadcast (DVB) system. In a typical DVB system there are often a number of functions which must be co-ordinated and synchronized. The invention provides a monitoring point for managing the total multiplex, and controlling the mix of services being transmitted. The system fulfils most of the software integration requirements in a broadcast centre. A central database, held in the operational areas, is provided and is the reference point to which other systems refer. A large protocol converter is provided which links the scheduling system to the playout and conditional access (CA) systems.

64. 发明公开

EP1059002A1 KEY DELIVERY IN A SECURE BROADCASTING SYSTEM 审中-公开
标题翻译：钥匙交付在一个安全的广播系统
公开(公告)号：EP1059002A1
公开(公告)日：2000-12-13
申请号：EP99907799.3
申请日：1999-02-03
申请人： NDS LIMITED
发明人： SERED, Yishai , DALLARD, Nigel, Stephen
IPC分类号： H04N7/167
CPC分类号： H04N7/1675 , H04N21/26606 , H04N21/4623 , H04N21/47211 , H04N21/6334
摘要： A key delivery method for use in an encoded communications system in which at least one encoded item including a first item encoded with a first item control word is sent in a communication stream from a sender to a receiver, the method including transmitting an item entitlement control message (IECM) including item control information, transmitting a stream entitlement control message (SECM) including stream control information, and combining at least part of the item control information and at least part of the stream control information to produce the first item control word. Related methods and apparatus are also disclosed.

65. 发明公开

EP0962083A2 METHOD AND APPARATUS FOR DETECTING CORRUPT PILOTS IN THE RECEPTION OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEX (OFDM) SIGNALS 失效
标题翻译：用于检测方法及装置伪造的飞行员在接受正交FREQUENZMULTIPLEXSIGNALEM（OFDM）
公开(公告)号：EP0962083A2
公开(公告)日：1999-12-08
申请号：EP98905119.0
申请日：1998-02-20
申请人： NDS LIMITED
发明人： TURNER, Adrian, Charles , DEALTRY, Roger, Paul
IPC分类号： H04L27
CPC分类号： H04L27/2647
摘要： This invention relates generally to transmitting and receiving frequency division multiplex signals and, more precisely, to a method and apparatus for transmitting and receiving orthogonal frequency division multiplex (OFDM) signals. OFDM signals may include both data carriers and reference carriers (or pilots). The pilot signals are transmitted at known positions with a known phase and amplitude, however distortions in the transmission channel can adversely affect the data received at a receiver. Pilots are used by a receiver to correct the data carriers which may have been affected by distortion or interference in the transmission channel. However, if a pilot signal is corrupted during transmission this can lead to the data carriers being erroneously corrected. The present invention seeks to provide a method and apparatus for receiving a frequency division multiplex signal in which the effect of corrupt pilot signals can be monitored and reduced.

66. 发明公开

EP0961216A2 IC card-based test apparatus and method 有权
标题翻译： ChipkartenbasierendesPrüfverfahrenund Vorrichtung
公开(公告)号：EP0961216A2
公开(公告)日：1999-12-01
申请号：EP99200839.1
申请日：1999-03-17
申请人： NDS LIMITED
发明人： Adler, Michael
IPC分类号： G06K7/00 , G06K19/07 , G06F11/273 , G01R31/00
CPC分类号： G06F11/261 , G06K7/0008
摘要： This invention discloses a device for testing a smart card interface, including a mimic of a smart card designed for the interface; and test electronics for measuring parameters of signals output by the interface.
摘要翻译：本发明公开了一种用于测试智能卡接口的设备，包括为接口设计的智能卡的模仿; 并测试电子设备，用于测量由接口输出的信号的参数。

67. 发明公开

EP0948215A2 Filtering video signals containing chrominance information 有权
标题翻译： Verfahren und Vorrichtung zum Filnt von Videosignalen mit Chrominanzinformation
公开(公告)号：EP0948215A2
公开(公告)日：1999-10-06
申请号：EP99200597.5
申请日：1999-03-03
申请人： NDS LIMITED
发明人： Baudouin, Charles
IPC分类号： H04N9/64
CPC分类号： H04N9/646
摘要： The present invention relates to filtering an interlaced input digital signal containing fields of chrominance information preparatory to converting the format of the signal by means of a downsampling conversion from a 4:2:2 format to a 4:2:0 format.
In the invention, the input signal is applied to a delay circuit to derive samples of the input signal representing spatially separated elements from each chrominance field where the spatial separation is of one line. The magnitudes of the samples are compared relative to one another to identify frequencies which fall within different high and low frequency ranges. An adaptive filter has a plurality of frequency responses corresponding to the frequency ranges and a frequency response is selected in accordance with the identified frequency range of the input signal samples.
摘要翻译：本发明涉及滤波包含色度信息领域的隔行输入数字信号，准备通过从4：2：2格式的下采样转换为4：2：0格式来转换信号的格式。在本发明中，输入信号被施加到延迟电路以从空间分离为一行的每个色度场导出代表空间分离的元素的输入信号的样本。将样本的幅度相对于彼此进行比较，以识别属于不同高频和低频范围内的频率。自适应滤波器具有对应于频率范围的多个频率响应，并且根据所识别的输入信号样本的频率范围来选择频率响应。

68. 发明公开

EP0948207A1 Method and apparatus for processing a digital signal 审中-公开
标题翻译： Datenverarbeitungsverfahren und-gerät
公开(公告)号：EP0948207A1
公开(公告)日：1999-10-06
申请号：EP99200581.9
申请日：1999-03-02
申请人： NDS LIMITED
发明人： Murray, Kevin Alistair , Davies, Colin , Bock, Alois Martin , Huggett, Anthony Richard , Funnel, John Stuart , Warburton, Richard John , Stubbings, Clive Anthony
IPC分类号： H04N7/26
CPC分类号： H04N19/436 , H04N19/30
摘要： The present invention relates to digital television, and in particular the encoding of high-definition television (HDTV).
Standard digital television pictures have a resolution of 480 x 704 pixels and display at 30 frames per second. High definition television (HDTV) differs from standard television in having a much higher resolution.
The generation of digitally compressed HDTV signals requires dedicated encoding equipment due to the high sampling rates used for HDTV signals. Consequently, due to their increased complexity, HDTV encoders are substantially more complex and expensive than standard TV encoders.
A standard television encoder is not capable of encoding a HDTV image due to the increased resolution and the much larger data rates associated with such large images which is outside of capacity of a standard television encoder.
The present invention overcomes these problems and provides a method and apparatus for creating HDTV signals using predominantly standard television equipment.
摘要翻译：本发明涉及数字电视，特别涉及高分辨率电视（HDTV）的编码。标准数字电视图像的分辨率为480×704像素，每秒30帧显示。高分辨率电视（HDTV）与标准电视的分辨率不同。数字压缩的HDTV信号的产生由于用于HDTV信号的高采样率而需要专用的编码设备。因此，由于HDTV编码器的复杂性越来越高，比标准电视编码器要复杂得多。标准电视编码器由于分辨率的增加而不能编码HDTV图像，并且与标准电视编码器容量之外的这种大图像相关联的数据速率大得多。本发明克服了这些问题，并且提供了使用主要标准的电视设备来创建HDTV信号的方法和装置。

69. 发明公开

EP0939526A2 Carrier recovery for MPSK signals 审中-公开
标题翻译： TrägerrückwinnungfürMPSK-Sigale
公开(公告)号：EP0939526A2
公开(公告)日：1999-09-01
申请号：EP99200312.9
申请日：1999-02-03
申请人： NDS LIMITED
发明人： Markarian, Garegin
IPC分类号： H04L27/227
CPC分类号： H04L27/2273 , H04L2027/0057 , H04L2027/0071
摘要： The present invention relates to the recovery of a carrier phase from a modulated input signal where the modulation is in accordance with the M-PSK modulation format, M has a value greater than 4 and the signal-to-noise ratio in the channel is low.
A voltage controlled oscillator is employed to generate first and second oscillations in phase quadrature with respect to each other. The modulated input signal is mixed with the first of the oscillations to detect the (I) signal component and the modulated input signal is mixed with the second of the oscillations to detect the (Q) signal component. A control signal is derived from the (I) and (Q) signal components as an estimate of the phase difference between the input signal carrier and the voltage controlled oscillator. The control signal conforms to the relationship: where 'a' is the control signal, 'k' is an odd integer between 1 and M, and C k m represent binominal coefficients.
The frequency of the voltage controlled oscillator is controlled by the control signal to recover the carrier phase.
摘要翻译：本发明涉及从其中调制符合M-PSK调制格式的调制输入信号恢复载波相位，M具有大于4的值，并且信道中的信噪比低。采用压控振荡器来产生彼此相位正交的第一和第二振荡。调制输入信号与第一振荡混合以检测（I）信号分量，调制输入信号与第二振荡混合以检测（Q）信号分量。控制信号从（I）和（Q）信号分量导出为输入信号载波和压控振荡器之间的相位差的估计。控制信号符合以下关系： $其中'a'是控制信号，'k'是1和M之间的奇整数，Ck_m表示二进制系数。压控振荡器的频率由控制信号控制，以恢复载波相位。$

70. 发明公开

EP0933945A2 Digital signal processing 审中-公开
标题翻译： Digitale Signalverarbeitung
公开(公告)号：EP0933945A2
公开(公告)日：1999-08-04
申请号：EP99101354.1
申请日：1999-01-26
申请人： NDS LIMITED
发明人： Davies, Colin , Brown, Derek William
IPC分类号： H04N7/26
CPC分类号： H04N19/60 , H04N19/97
摘要： According to the present invention there is provided a method and processing apparatus for producing a representation of a digital signal in terms of a plurality of basis functions. A first processor determines a basis function for each of a plurality of portions of the signal. A second processor periodically determines a correction coefficient for each basis function. A generator generates a basis function structure book based on the original basis function and the correction coefficient.
This has the advantage of improving the efficiency of the Matching Pursuits process and generating a more accurate basis function structure book.
摘要翻译：根据本发明，提供一种用于根据多个基本功能产生数字信号的表示的方法和处理装置。第一处理器确定信号的多个部分中的每一个的基函数。第二处理器周期性地确定每个基函数的校正系数。发生器基于原始基函数和校正系数生成基函数结构图。这具有提高匹配追求过程的效率并生成更准确的基础功能结构书的优点。

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