Conditional access system providing access to multiple programs or services
    31.
    发明申请
    Conditional access system providing access to multiple programs or services 有权
    条件访问系统提供对多个程序或服务的访问

    公开(公告)号:US20060143448A1

    公开(公告)日:2006-06-29

    申请号:US11025304

    申请日:2004-12-29

    申请人: Paul Moroney

    发明人: Paul Moroney

    IPC分类号: H04L9/00

    摘要: A conditional access subsystem is proved which is to reside with an end-user for receiving, decrypting and decoding all programs distributed by a content provider that the end user is entitled to access so that the decrypted and decoded programs are available for display on one or more display devices without use of a set-top terminal dedicated to each of the display devices. The subsystem includes a receiver for receiving and demodulating a multi-program transport (MPTS) stream distributed by the content provider. The MPTS includes a plurality of packets constituting a plurality of programs using one of N different encryption schemes each associated with one of N service tiers, wherein N is an integer greater than one. Each of the N different encryption schemes has a different encryption/decryption key associated therewith. The packet identifiers for the packets associated with programs in any given one of the service tiers are in a consecutive sequence. A decryptor is provided for decrypting each of the programs associated with each of the N service tiers that the end user is entitled to access. A decoder is also provided for decoding each of the decrypted programs.

    摘要翻译: 证明条件访问子系统与终端用户一起驻留,用于接收,解密和解码由终端用户有权访问的内容提供商分发的所有节目,使得解密和解码的节目可用于一个或多个 更多的显示设备,而不使用专用于每个显示设备的机顶终端。 子系统包括用于接收和解调由内容提供商分发的多节目传输(MPTS)流的接收机。 MPTS包括使用N个不同加密方案中的一个与N个服务层中的一个相关联的多个程序组,其中N是大于1的整数。 N个不同加密方案中的每一个具有与其相关联的不同的加密/解密密钥。 与任何一个服务层中的程序相关联的分组的分组标识符是连续的顺序。 提供解密器用于解密与最终用户有权访问的N个服务层中的每一个相关联的每个程序。 还提供了解码器来解码每个解密的程序。

    Processing asynchronous data within a set-top decoder
    32.
    发明授权
    Processing asynchronous data within a set-top decoder 失效
    在机顶解码器中处理异步数据

    公开(公告)号:US5949795A

    公开(公告)日:1999-09-07

    申请号:US800877

    申请日:1997-02-14

    申请人: Paul Moroney Ken Bell

    发明人: Paul Moroney Ken Bell

    IPC分类号: H04J3/06 H04N21/234 H04N21/44

    摘要: Data overflow in a buffer of a set-top decoder for receiving asynchronous data, such as digital television signals, is prevented while also maintaining compliance with an interface timing standard such as the RS404-A standard. A fullness level of the buffer is monitored to determine whether the fullness falls within a first, nominal range, or into second or third higher ranges. A clocking signal is derived from a ratio of a fixed reference clock signal and a divisor for outputting asynchronous data from the buffer at a desired rate. A direct digital synthesis (DDS) circuit may be used to provide a fractional divisor. The divisor is selected to provide the clocking signal at a rate so that a difference between a target output rate and the actual output rate falls within a data performance standard such as the RS404-A standard.

    摘要翻译: 防止用于接收异步数据(例如数字电视信号)的机顶解码器的缓冲器中的数据溢出,同时还保持符合诸如RS404-A标准的接口定时标准。 监视缓冲器的饱和度水平以确定丰满度是否在第一,标称范围内,或者达到第二或第三较高范围。 时钟信号是从固定参考时钟信号和除数的比率导出的,用于以期望的速率从缓冲器输出异步数据。 可以使用直接数字合成(DDS)电路来提供分数除数。 选择除数以提供时钟信号,使得目标输出速率和实际输出速率之间的差落在诸如RS404-A标准的数据性能标准之内。

    Acquisition and error recovery of audio data carried in a packetized
data stream
    33.
    发明授权
    Acquisition and error recovery of audio data carried in a packetized data stream 失效
    在分组数据流中携带的音频数据的采集和错误恢复

    公开(公告)号:US5703877A

    公开(公告)日:1997-12-30

    申请号:US562611

    申请日:1995-11-22

    摘要: Audio data is processed from a packetized data stream carrying digital television information in a succession of fixed length transport packets. Some of the packets contain a presentation time stamp (PTS) indicative of a time for commencing the output of associated audio data. After the audio data stream has been acquired, the detected audio packets are monitored to locate subsequent PTS's for adjusting the timing at which audio data is output, thereby providing proper lip synchronization with associated video. Errors in the audio data are processed in a manner which attempts to maintain synchronization of the audio data stream while masking the errors. In the event that the synchronization condition cannot be maintained, for example in the presence of errors over more than one audio frame, the audio data stream is reacquired while the audio output is concealed. An error condition is signaled to the audio decoder by altering the audio synchronization word associated with the audio frame in which the error has occurred.

    摘要翻译: 音频数据从一系列固定长度传输分组携带数字电视信息的打包数据流处理。 一些分组包含指示用于开始相关联的音频数据的输出的时间的演示时间戳(PTS)。 在获取音频数据流之后,监视检测到的音频分组以定位用于调整输出音频数据的定时的后续PTS,从而与相关联的视频提供适当的唇同步。 音频数据中的错误以尝试保持音频数据流的同步同时掩盖错误的方式被处理。 在不能保持同步条件的情况下,例如在存在多于一个音频帧的错误的情况下,音频数据流被重新获取,同时音频输出被隐藏。 通过改变与发生错误的音频帧相关联的音频同步字,向音频解码器发出错误状况。

    Reformatting of variable rate data for fixed rate communication
    34.
    发明授权
    Reformatting of variable rate data for fixed rate communication 失效
    对固定利率通信的可变利率数据进行重新格式化

    公开(公告)号:US5612956A

    公开(公告)日:1997-03-18

    申请号:US573227

    申请日:1995-12-15

    摘要: Variable rate data is reformatted for communication to an external device at a fixed rate. Fixed length packets of the variable rate data are recovered from a multiplex of data packets. A packet start byte is added to the beginning of each of the recovered packets. Fill bits are added to the recovered packets as necessary to maintain the desired fixed output rate if the output rate is greater than an information rate of the variable rate data. The recovered packets with the added packet start byte and fill bits are provided as output to the external device at the fixed rate. The recovered packets with the added packet start byte and fill bits are advantageously encoded using alternate mark inversion (AMI) and binary eight zero substitution (B8ZS). The packet start byte and B8ZS substitution can comprise unique AMI violation sequences.

    摘要翻译: 可变速率数据被重新格式化以便以固定速率与外部设备通信。 可变速率数据的固定长度分组从数据分组的复用中恢复。 分组开始字节被添加到每个恢复的分组的开头。 如果输出速率大于可变速率数据的信息速率,填充位将根据需要添加到恢复的数据包中,以保持所需的固定输出速率。 具有添加的分组开始字节和填充比特的恢复分组以固定速率提供给外部设备的输出。 具有添加的分组开始字节和填充比特的恢复的分组有利地使用交替标记反转(AMI)和二进制八进制零替换(B8ZS)进行编码。 分组起始字节和B8ZS替换可以包括唯一的AMI违例序列。

    System for communicating television signals or a plurality of digital
audio signals in a standard television line allocation
    36.
    发明授权
    System for communicating television signals or a plurality of digital audio signals in a standard television line allocation 失效
    用于在标准电视线路分配中传送电视信号或多个数字音频信号的系统

    公开(公告)号:US5091936A

    公开(公告)日:1992-02-25

    申请号:US647827

    申请日:1991-01-30

    摘要: A system is provided for selectively transmitting horizontal television lines including video and digital audio components or equivalent digital data lines containing a plurality of audio program signals. A conventional television signal transmission places a digital audio signal in the horizontal blanking interval, followed by analog video information. In accordance with the present invention, the "window" containing the analog video information is replaced with a plurality of digital audio signals that are time division multiplexed within the window. An additional audio channel is placed in the horizontal blanking interval, at the same location the audio is placed when video information is transmitted. Selector switches are provided in the encoder and decoder for processing a composite waveform as either a video signal with an associated audio channel, or as a multiple channel digital audio signal. Independent encryption and decryption of each of the multiple audio channels is provided.

    摘要翻译: 提供一种用于选择性地发送包括视频和数字音频分量的水平电视线或包含多个音频节目信号的等效数字数据线的系统。 传统的电视信号传输将水平消隐间隔中的数字音频信号置于模拟视频信息之后。 根据本发明,包含模拟视频信息的“窗口”被在窗口内被时分复用的多个数字音频信号所取代。 在发送视频信息时,在音频放置的相同位置处,在水平消隐间隔中放置一个附加音频通道。 在编码器和解码器中提供选择器开关,用于将复合波形作为具有相关音频通道的视频信号或作为多声道数字音频信号进行处理。 提供了多个音频通道中的每一个的独立加密和解密。

    Digital audio companding and error conditioning
    37.
    发明授权
    Digital audio companding and error conditioning 失效
    数字音频压扩和错误调节

    公开(公告)号:US4809274A

    公开(公告)日:1989-02-28

    申请号:US091911

    申请日:1987-09-04

    CPC分类号: H03G7/007 H03M7/3053

    摘要: A system for companding digital audio signal samples processes the digital audio signal samples to correct errors induced by the compression and expansion processes. These errors are calculated prior to compressing the samples. Such errors are calculated in accordance with a predetermined compression process and a predetermined expansion process; and the digital audio signal samples are corrected in accordance with such calculations prior to compression. The compression process includes providing a 3-bit gain word for a block of 70 samples. The gain word is computed in accordance with the position of the most significant "1" bit in the sample(s) having the peak magnitude. Each individual sample is processed in accordance with the block gain word to compress the sample by reducing the number of magnitude bits. The error calculation process includes calculating an error signal by subtracting a calculated reproduced digital audio signal sample from the digital audio signal sample to be compressed, filtering the error signal by noise-spectral filtering and adding the filtered error signal to the next-providing digital audio signal sample to provide a corrected digital audio signal sample for compression. The error calculation process also includes calculating an error value based upon the effect of using a single gain word for compressing a block of samples. The error value is subtracted from the corrected digital audio signal sample prior to compression. The gain word is forward error corrected by (5,1) encoding to enable detection and correction of both single-bit and double-bit errors in transfer by majority voting. The sign bit and the most significant magnitude bits of the compressed samples are forward error corrected to enable detection and correction of single-bit errors in transfer and to enable detection and concealment of double-bit errors in transfer.

    摘要翻译: 用于压缩数字音频信号样本的系统处理数字音频信号样本以校正由压缩和扩展过程引起的误差。 在压缩样品之前计算这些误差。 这样的误差根据预定的压缩处理和预定的扩展处理来计算; 并且在压缩之前根据这样的计算校正数字音频信号样本。 压缩过程包括为70个样本的块提供3位增益字。 根据具有峰值幅度的采样中最高有效“1”位的位置来计算增益字。 根据块增益字来处理每个单独的样本,以通过减少幅度比特数来压缩样本。 误差计算处理包括通过从要压缩的数字音频信号样本中减去计算出的再现数字音频信号样本来计算误差信号,通过噪声频谱滤波对误差信号进行滤波,并将滤波后的误差信号加到下一个提供的数字音频 信号采样以提供用于压缩的校正数字音频信号样本。 误差计算处理还包括基于使用单个增益字来压缩采样块的效果来计算误差值。 在压缩之前从校正的数字音频信号样本中减去误差值。 增益字是通过(5,1)编码进行前向误差校正,以便通过多数表决来传输单位和双位错误的检测和校正。 压缩样本的符号位和最高有效幅度位是前向纠错的,以便能够检测和校正传输中的单位错误,并能够检测和隐藏传输中的双位错误。

    SECURE METHOD OF ENFORCING CLIENT CODE VERSION UPGRADE IN DIGITAL RIGHTS MANAGEMENT SYSTEM
    38.
    发明申请
    SECURE METHOD OF ENFORCING CLIENT CODE VERSION UPGRADE IN DIGITAL RIGHTS MANAGEMENT SYSTEM 审中-公开
    执行数字权限管理系统中客户端代码升级的安全方法

    公开(公告)号:US20140019952A1

    公开(公告)日:2014-01-16

    申请号:US13545921

    申请日:2012-07-10

    IPC分类号: G06F9/44

    摘要: A method for enforcing a software upgrade for software operable on a device includes receiving, at the device, a message including software-version information for the software from a domain controller. The software-version information indicates a list of approved versions of the software. The method includes determining, by the device, the software-version information from the message, and determining a current version of the software included on the device by performing a comparison of versions in the list of approved versions to the current version of the software on the device. If the current version of the software is not included in the list of approved versions, the method includes causing the device to not have or use a set of up-to-date security credentials for a set of content servers, for accessing any pieces of media on the set of content servers until the device has an approved version of the software.

    摘要翻译: 用于对在设备上可操作的软件执行软件升级的方法包括在设备处从域控制器接收包括用于软件的软件版本信息的消息。 软件版本信息表示软件的批准版本列表。 该方法包括由设备确定来自消息的软件版本信息,以及通过执行将批准版本列表中的版本与当前版本的软件进行比较来确定设备上包括的软件的当前版本 装置。 如果当前版本的软件不包括在批准版本列表中,则该方法包括使设备不具有或使用一组内容服务器的最新安全凭证,用于访问任何 媒体在内容服务器集上,直到设备具有批准版本的软件。

    REMOTE CONTROL APPARATUS, METHOD AND USER INTERFACE SYSTEM
    39.
    发明申请
    REMOTE CONTROL APPARATUS, METHOD AND USER INTERFACE SYSTEM 有权
    远程控制装置,方法和用户界面系统

    公开(公告)号:US20120140124A1

    公开(公告)日:2012-06-07

    申请号:US12960610

    申请日:2010-12-06

    IPC分类号: H04N5/44

    摘要: Apparatus forming part of a home entertainment system includes an electronic device having an input accepting a signal corresponding to an externally-generated first user interface, a control module for internally-generating a signal corresponding to a second user interface, and an output for transmitting a combination of the above referenced signals for display. The control module controls an arrangement of display of the first user interface and the second user interface. The apparatus also includes a remote controller for communicating via a two-way communication link with the control module of the electronic device concerning a selection of one of the first user interface and the second user interface. The remote controller having an emitter for emitting control code signals, and the operation of the emitter is controlled by communications received by the remote controller from the control module of the electronic device. A method is also provided.

    摘要翻译: 构成家庭娱乐系统的一部分的装置包括:电子装置,其具有接受与外部生成的第一用户接口相对应的信号的输入;内部生成对应于第二用户界面的信号的控制模块;以及用于发送 组合上述参考信号进行显示。 控制模块控制第一用户界面和第二用户界面的显示布置。 该装置还包括遥控器,用于通过双向通信链路与电子设备的控制模块进行通信,涉及第一用户界面和第二用户界面之一的选择。 具有用于发射控制码信号的发射器和发射器的操作的遥控器由遥控器从电子设备的控制模块接收的通信来控制。 还提供了一种方法。

    REGISTERING CLIENT DEVICES WITH A REGISTRATION SERVER
    40.
    发明申请
    REGISTERING CLIENT DEVICES WITH A REGISTRATION SERVER 有权
    使用注册服务器注册客户端设备

    公开(公告)号:US20110158411A1

    公开(公告)日:2011-06-30

    申请号:US12648416

    申请日:2009-12-29

    IPC分类号: H04L9/08 H04L9/00

    摘要: In a method of registering a plurality of client devices with a device registration server for secure data communications, a unique symmetric key is generated for each of the client devices using a cryptographic function on a private key of the device registration server and a respective public key of each of the client devices, and a broadcast message containing the public key of the device registration server is sent to the client devices, in which the client devices are configured to generate a respective unique symmetric key from the public key of the device registration server and its own private key using a cryptographic function, and in which the unique symmetric key generated by each client device matches the respective unique symmetric key generated by the device registration server for the respective client device.

    摘要翻译: 在使用用于安全数据通信的设备注册服务器登记多个客户端设备的方法中,使用设备注册服务器的私钥的密码功能和相应的公钥来为每个客户端设备生成独特的对称密钥 并且将包含设备注册服务器的公开密钥的广播消息发送到客户端设备,其中客户端设备被配置为从设备注册服务器的公开密钥生成相应的唯一对称密钥 和其自己的私钥使用加密功能,并且其中由每个客户端设备生成的唯一对称密钥与由相应客户端设备的设备注册服务器生成的相应唯一对称密钥匹配。