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公开(公告)号：US6022825A
公开(公告)日：2000-02-08
申请号：US4575
申请日：1998-01-08
CPC分类号： B01D53/945 , B01J23/63 , B01J37/0244 , Y02T10/22
摘要： Improved platinum group three-way catalyst composition comprising (a) a high temperature catalyst support material, (b) a low temperature catalyst support material, (c) at least one platinum group metal, and (d) a metal additive effective for the suppression of hydrogen sulfide emissions, that is disposed in a separate layer either under or over a layer comprising the constituents (a), (b), and (c), or in the same layer as the constituents (a), (b), and (c). When the metal additive is disposed in the same layer as the constituents (a), (b), and (c), (d) the metal additive is disposed in a physical structure that is segregated from the remaining components in the layer.
摘要翻译： 改进的铂族三元催化剂组合物，其包含（a）高温催化剂载体材料，（b）低温催化剂载体材料，（c）至少一种铂族金属，和（d）有效抑制的金属添加剂 （a），（b）和（c）的层或在与组分（a），（b）相同的层中的单层中， 和（c）。 当金属添加剂配置在与组分（a），（b）和（c）相同的层中时，（d）金属添加剂被设置在与该层中的其余组分分离的物理结构中。
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2.发明授权Block-cipher cryptographic device based upon a pseudorandom nonlinear sequence generator 失效基于PSEUDORANDOM非线性序列发生器的块式CIPHER CRYPTOGRAPHIC设备
公开(公告)号：US5054067A
公开(公告)日：1991-10-01
申请号：US482644
申请日：1990-02-21
CPC分类号： H04L9/0668 , H04L9/0625 , H04L2209/12
摘要： A block-cipher cryptographic device that processes plaintext/encrypted input data with a key signal to provide encrypted/decrypoted output data. Such device includes a shift register for receiving input data; and data processing means for executing the following data processing routine a selected number of cycles to provide output data: processing the contents of said shift register with a key signal to provide initially processed data; initializing a pseudorandom nonlinear sequence generator with the initially processed data; running the pseudorandom nonlinear sequence generator to generate a keystream; segregating portions of the keystream; processing said segregated portions of said keystream with a portion of the data in the shift register to provide a block of processed data; and shifting said block of processed data into the shift register. To further increase the randomness of the pseudorandom keystream generator, and hence the encryption security, the processing means segretates the keystream in accordance with a routine wherein the beginning of said segregated portion is provided at a time related to the beginning of the keystream in response to a duration indication; segregates every nth bit of the keystream from said beginning of said segregated portion for a selected number of segregated bits in response to a frequency indication; and provides said initially processed data by first processing said shift register contents and said key signal and then rotating data produced by said first processing in response to a rotation indication. The duration indication, the frequency indication and the rotation indication are each separately provided for each of the cycles and may be different for each of the cycles.
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3.发明授权Controlled authorization of descrambling of scrambled programs broadcast between different jurisdictions 失效在不同司法管辖区之间广播的扰频节目进行解扰的受控授权
公开(公告)号：US4989245A
公开(公告)日：1991-01-29
申请号：US319540
申请日：1989-03-06
CPC分类号： H04N7/162
摘要： A control system and a corresponding method for controlling descrambling within a plurality of jurisdictions of scrambled programs broadcast from at least one of said jurisdictions. The control system includes a descrambler authorization system for each jurisdiction for providing authorization signals indicating whether descrambling of a predetermined program by descramblers located within the respective jurisdiction of the descrambler authorization system is authorized; means for distributing to a broadcast system the authorization signals pertaining to said predetermined program that are provided by the descrambler authorization systems for a plurality of said jurisdictions; a broadcast system for broadcasting a scrambled predetermined program and the distributed authorization signals pertaining to said predetermined program that are provided by the descrambler authorization systems for a plurality of said jurisdictions; and descramblers located in each jurisdiction for descrambling the scrambled predetermined program only when authorized by said broadcast authorization signals provided by the descrambler authorization system for the jurisdiction in which the descramblers are located. In order to enable a given jurisdiction to also regulate the export of scrambled programs by controlling the authorization of descramblers located in other jurisdictions for descrambling of programs broadcast from the given jurisdiction, the broadcast system includes means for also broadcasting a jurisdiction indication signal indicating the jurisdictions in which descrambling of the broadcast scrambled program is authorized; and the descramblers include means for processing the jurisdiction indication signal and for enabling descrambling of said predetermined program only when the jurisdiction indication signal indicates that descrambling of said program is authorized in the jurisdiction in which the descramblers are located.
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公开(公告)号：US4975951A
公开(公告)日：1990-12-04
申请号：US488472
申请日：1990-02-26
CPC分类号： H04N7/17309 , H04N7/165
摘要： A distribution control system for controlling the distribution of scrambled impulse pay per view (IPPV) programming from a plurality of different IPPV programmers to a plurality of descramblers. The system includes a plurality of business data processing systems, a plurality of channel control systems respectively related to a plurality of the given IPPV programmers and an IPPV management system. The business data processing systems process view history data identifying descrambled IPPV programs and credit data for individual descramblers and cost data for IPPV programs provided by given IPPV programmers and provide credit data and IPPV authorization data pertaining to individual descramblers. Each of the channel control systems provides descrambler messages containing identification, cost and IPPV status data for individual IPPV programs. The IPPV data management system processes the credit data and IPPV authorization data provided by the business data processing systems to provide descrambler messages unique to each descrambler containing credit data and IPPV authorization data pertaining to the individual descrambler. The IPPV management system also sorts the IPPV program identification and cost data provided the channel control systems in accordance with which business data processing systems process data for those IPPV programs provided by the respective given IPPV programmers, and sorts view history data provided by the descramblers in accordance with which business data processing systems process data for the respective descramblers for the IPPV programmers that provide the IPPV programs identified in the view history data provided by the respective descramblers; and forwards the sorted IPPV program identification and cost data and the sorted view history data to the respective business data processing systems.
摘要翻译： 一种分配控制系统，用于控制从多个不同IPPV编程器到多个解扰器的扰频脉冲支付每视图（IPPV）编程的分布。 该系统包括多个业务数据处理系统，分别与多个给定的IPPV编程器和IPPV管理系统相关的多个信道控制系统。 商业数据处理系统处理识别由给定IPPV程序员提供的IPPV程序的个体解扰器和成本数据的解扰IPPV程序和信用数据的查看历史数据，并提供与各个解扰器有关的信用数据和IPPV授权数据。 每个信道控制系统提供包含用于各个IPPV节目的识别，成本和IPPV状态数据的解扰器消息。 IPPV数据管理系统处理由业务数据处理系统提供的信用数据和IPPV授权数据，以提供每个解扰器唯一的解扰器消息，其中包含与各个解扰器相关的信用数据和IPPV授权数据。 IPPV管理系统还对IPPV程序识别和成本数据进行排序，根据哪些业务数据处理系统处理由各个给定的IPPV程序员提供的IPPV程序的数据的信道控制系统，并对由解扰器提供的查看历史数据进行分类 根据哪个业务数据处理系统处理用于提供在由各个解扰器提供的查看历史数据中标识的IPPV程序的IPPV编程器的各个解扰器的数据; 并将分类的IPPV节目标识和成本数据以及排序的视图历史数据转发到各个业务数据处理系统。
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公开(公告)号：US4908859A
公开(公告)日：1990-03-13
申请号：US147167
申请日：1988-01-22
IPC分类号： H04N7/16
CPC分类号： H04N7/16
摘要： A receiver interface system for enabling an operator to access different types of services in a like manner, wherein the services contain different combinations of service components received by a receiver in different portions of one or more different frequency channels, such as television channels. The system includes a plurality of separate interface channels for carrying different types of services containing different combinations of the service components; switching means for selecting a said service, wherein the switching means is coupled to the interface channels for accessing the respective interface channels in a like manner; and a decoder coupled to the receiver and the interface channels for accessing the components of said selected service received by the receiver in different portions of one or more different frequency channels to provide said selected service on the interface channel carrying the selected service. The decoder includes a service definition table defining access to different combinations of the service components by each of a plurality of the separate interface channels to thereby define access to different types of services by the separate interface channels; and a channel configuration map defining access to the frequency channels by the separate interface channels for enabling the different combinations of service components for each of the services to be accessed in accordance with the service definition table. The service definition table may include means for defining access to different service components located in the same portion of a given frequency channel at different times and/or may define access to different service components located in the following portions of the given frequency channel with respect to a television signal received over the given frequency channel: the video information interval, the horizontal blanking interval, the vertical blanking interval and the subcarrier of the given frequency.
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公开(公告)号：US20130132722A1
公开(公告)日：2013-05-23
申请号：US13301206
申请日：2011-11-21
IPC分类号： H04L9/32
CPC分类号： H04L9/32 , H04L9/0816 , H04L9/0822 , H04L9/0866 , H04L63/12 , H04L63/123 , H04L63/126 , H04L2209/601
摘要： Systems and methods for authenticating data and timeliness are disclosed. A method for authentication can comprise processing a data block to determine a first secret element, generating a second secret element based upon the first secret element, generating a non-secret element based upon the second secret element, and comparing the non-secret element to a nonce associated with the first secret element to determine authentication.
摘要翻译： 披露了用于认证数据和及时性的系统和方法。 认证方法可以包括处理数据块以确定第一秘密元素，基于第一秘密元素生成第二秘密元素，基于第二秘密元素生成非秘密元素，并且将非秘密元素与 与第一秘密元素相关联以确定认证的随机数。
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公开(公告)号：US06421359B1
公开(公告)日：2002-07-16
申请号：US09679957
申请日：2000-10-05
IPC分类号： H04J302
CPC分类号： H04N21/23608 , H04N21/23655
摘要： An elementary two-stream transport multiplexer provides for the addition of services contained in a transport stream to a pre-existing transport stream. The elementary multiplexer includes a pair of transport demultiplexers, a processor and a transport remultiplexer. The demultiplexers demultiplex a pair of input transport streams to their constituent service components and service control information tables. The service control information tables are routed to the processor which combines and reconfigures the information within the tables to provide a single set of output service control information tables. The demultiplexers filter the service components based on the output service control tables. The transport remultiplexer multiplexes the output tables with the filtered streams to provide an output transport stream.
摘要翻译： 基本的双流传输多路复用器提供将包含在传输流中的服务添加到预先存在的传输流中。 基本多路复用器包括一对传输解复用器，处理器和传输再多路复用器。 解复用器将一对输入传输流解复用于其组成的服务组件和服务控制信息表。 服务控制信息表被路由到处理器，其结合并重新配置表内的信息以提供单组输出服务控制信息表。 多路分解器基于输出服务控制表过滤服务组件。 传输再多路复用器将输出表与经过滤的流复用以提供输出传输流。
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8.发明授权System and method for digitally encoding and compressing analog signals carried in the vertical blanking interval of television signal 失效用于数字编码和压缩在电视信号的垂直消隐间隔中携带的模拟信号的系统和方法公开(公告)号：US06278733B1
公开(公告)日：2001-08-21
申请号：US08902174
申请日：1997-07-29
IPC分类号： H04N712
CPC分类号： H04N21/4348 , H04N21/23614 , H04N21/435 , H04N21/4382 , H04N21/440254
摘要： A system and method are disclosed for digitally representing reference and data signals transmitted in the vertical blanking interval (VBI) of an analog television waveform such as NTSC or PAL. The system includes means for compressing the digital representation of the VBI signals. A broad range of reference and data signals is capable of being represented. The compressed representations of the VBI signals are particularly suitable for inclusion in an MPEG2 compliant signal carrying compressed digital video and audio.
摘要翻译： 公开了一种用于数字表示在诸如NTSC或PAL之类的模拟电视波形的垂直消隐间隔（VBI）中发送的参考和数据信号的系统和方法。 该系统包括用于压缩VBI信号的数字表示的装置。 能够表示广泛的参考和数据信号。 VBI信号的压缩表示特别适合于包含在承载压缩数字视频和音频的MPEG2兼容信号中。
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公开(公告)号：US5115467A
公开(公告)日：1992-05-19
申请号：US644923
申请日：1991-01-23
CPC分类号： H04N7/1675 , H04L9/0833 , H04N21/26606
摘要： Signal encryption apparatus is provided for generating a common key and a distinct key from the same common secret generating key. A generating key is combined with common parameter data to provide a common intermediate key. The common intermediate key is used to produce a common key. The generating key is also combined with distinct parameter data to provide a distinct intermediate key. The distinct intermediate key is used to produce a distinct key. The system has particular applicability to the provision of category and program keys for use in a satellite television scrambling system. The generating key is used to produce the same category key at all uplinks, and different program keys at each uplink.
摘要翻译： 提供信号加密装置，用于从相同的公共密钥生成密钥生成公共密钥和不同的密钥。 生成密钥与公共参数数据组合以提供公共中间密钥。 公共中间密钥用于产生公共密钥。 生成密钥也与不同的参数数据组合以提供不同的中间密钥。 不同的中间键用于产生不同的键。 该系统特别适用于提供用于卫星电视加扰系统的类别和程序密钥。 生成密钥用于在所有上行链路上生成相同的类别密钥，并在每个上行链路上生成不同的程序密钥。
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公开(公告)号：US4864615A
公开(公告)日：1989-09-05
申请号：US200111
申请日：1988-05-27
CPC分类号： H04N7/1675 , H04L9/0822 , H04L9/0891 , H04N21/26613 , H04L2209/20
摘要： A key security system provides for the reproduction of secure keys by using distributed key generation data and a distributed encrypted prekey. The system encrypts program key generation data with a program key prekey in accordance with a first encryption algorithm to produce the program key; processes the program key to produce a keystream; and processes an information signal with the keystream to produce a scrambled information signal. The program key prekey is encrypted with a category key in accordance with a second encryption algorithm to produce an encrypted program key prekey. The scrambled information signal, the program key generation data and the encrypted program key prekey are distributed to descramblers. The descrambler within the key security system decrypts the distributed encrypted program key prekey with the category key in accordance with the second encryption algorithm to reproduce the program key prekey; encrypts the distributed program key generation data with the reproduced program key prekey in accordance with the first encryption algorithm to produce the program key; processes the reproduced program key to reproduce the keystream; and processes the distributed scrambled information signal with the reproduced keystream to descramble the distributed scrambled information signal. The key generation data incudes authorization data that must be processed by the authorization processor in the descrambler in order to enable the descrambler. The use of authorization data as key generation data protects the authorization data from spoofing attacks. When more data must be protected than a single operation of the encryption algorithm can support, then additional data blocks are protected by chaining the system, wherein the output from one stage forms part of the input to the next. The key generation data for the program key includes a sequence number securely associated with the category key to thereby "timelock" program key reproduction to the use of a current category key and thus prevent an attack based upon the use of an obsolete category key.
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