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1. 发明授权

US5740231A Network-based multimedia communications and directory system and method of operation 失效
公开(公告)号：US5740231A
公开(公告)日：1998-04-14
申请号：US307517
申请日：1994-09-16
申请人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
发明人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
IPC分类号： H04L12/58 , H04M3/42 , H04M3/493 , H04M3/50 , H04M3/53 , H04M3/533 , H04M7/00 , H04M7/12 , H04M15/00 , H04Q3/72 , H04M1/64
CPC分类号： H04L12/585 , H04L51/12 , H04M15/00 , H04M15/68 , H04M3/5307 , H04M3/53325 , H04L12/5885 , H04M2201/60 , H04M2215/0196 , H04M2242/22 , H04M3/42102 , H04M3/4228 , H04M3/4931 , H04M7/006 , H04M7/12 , H04Q2213/13093 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13174 , H04Q2213/13196 , H04Q2213/13204 , H04Q2213/13248 , H04Q2213/13336 , H04Q3/72 , Y10S707/99945 , Y10S707/99948
摘要： A communications system (10) is provided which comprises a plurality of network hubs (12), (14), and (16). Network hubs (12), (14), and (16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52) and (54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of the hub in processing a message. A management server (64) and a event processor (70) are used by communications system (10) to manage the internal operations of each of the network hubs. The network center (37) contains a customer computer interface system (167) and an interactive voice response system (169) to allow user interaction with information provider databases (39), a customer service system (161), a message tracking system (163), a billing system (159), and a HelpLine system (157). The network center (37) contains a master database (151) that is used to synchronize the databases stored in each of the network hubs (12), (14), and (16).

2. 发明授权

US06411684B1 Network-based multimedia communications and directory system and method of operation 失效
标题翻译：基于网络的多媒体通信和目录系统及操作方法
公开(公告)号：US06411684B1
公开(公告)日：2002-06-25
申请号：US09056592
申请日：1998-04-07
申请人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
发明人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
IPC分类号： H04M1100
CPC分类号： H04M15/68 , H04L51/12 , H04L51/34 , H04M3/42102 , H04M3/4228 , H04M3/4931 , H04M3/5307 , H04M3/53325 , H04M7/006 , H04M7/12 , H04M15/00 , H04M2201/60 , H04M2215/0196 , H04M2242/22 , H04Q3/72 , H04Q2213/13093 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13174 , H04Q2213/13196 , H04Q2213/13204 , H04Q2213/13248 , H04Q2213/13336 , Y10S707/99945 , Y10S707/99948
摘要： A communications system (10) is provided which comprises a plurality of network hubs (12), (14), and (16). Network hubs (12), (14), and (16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52) and (54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of-the hub in processing a message. A management server (64) and a event processor (70) are used by communications system (10) to manage the internal operations of each of the network, hubs. The network center (37) contains a customer computer interface system (167) and an interactive voice response system (169) to allow user interaction with information provider databases (39), a customer service system (161), a message tracking system (163), a billing system (159), and a HelpLine system (157). The network center (37) contains a master database (151) that is used to synchronize the databases stored in each of the network hubs (12), (14), and (16).
摘要翻译：提供一种包括多个网络集线器（12），（14）和（16）的通信系统（10）。网络集线器（12），（14）和（16）通过通信网络（18）互连。系统（10）将具有不同能力的消息系统（24），（26），（28），（30），（32），（34），（36），（40），（42）和（44）并使用不同的通信协议。网络集线器使用连接处理器（52）和（54）的数量与消息系统进行交互。集线器数据库（68）和消息存储（58）用于在网络集线器内存储控制信息和消息传递信息。网络处理器（60）用于与通信系统（10）内的其他集线器交互。消息路由器（72），连接管理器（74），数据复制器（76）和管理事件管理器（78）被用于控制处理消息中的集线器的操作。通信系统（10）使用管理服务器（64）和事件处理器（70）来管理每个网络集线器的内部操作。网络中心（37）包括客户计算机接口系统（167）和交互式语音响应系统（169），以允许用户与信息提供者数据库（39），客户服务系统（161），消息跟踪系统（163）），计费系统（159）和HelpLine系统（157）。网络中心（37）包含主数据库（151），用于同步存储在每个网络集线器（12），（14）和（16）中的数据库。

3. 发明授权

US06064723A Network-based multimedia communications and directory system and method of operation 失效
标题翻译：基于网络的多媒体通信和目录系统及操作方法
公开(公告)号：US06064723A
公开(公告)日：2000-05-16
申请号：US56674
申请日：1998-04-07
申请人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
发明人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
IPC分类号： H04L12/58 , H04M3/42 , H04M3/493 , H04M3/50 , H04M3/53 , H04M3/533 , H04M7/00 , H04M7/12 , H04M15/00 , H04Q3/72 , H04M1/64
CPC分类号： H04L12/585 , H04L51/12 , H04M15/00 , H04M15/68 , H04M3/5307 , H04M3/53325 , H04L12/5885 , H04M2201/60 , H04M2215/0196 , H04M2242/22 , H04M3/42102 , H04M3/4228 , H04M3/4931 , H04M7/006 , H04M7/12 , H04Q2213/13093 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13174 , H04Q2213/13196 , H04Q2213/13204 , H04Q2213/13248 , H04Q2213/13336 , H04Q3/72 , Y10S707/99945 , Y10S707/99948
摘要： A communications system (10) is provided which comprises a plurality of network hubs (12), (14), and (16). Network hubs (12), (14), and (16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52) and (54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of the hub in processing a message. A management server (64) and a event processor (70) are used by communications system (10) to manage the internal operations of each of the network hubs. The network center (37) contains a customer computer interface system (167) and an interactive voice response system (169) to allow user interaction with information provider databases (39), a customer service system (161), a message tracking system (163), a billing system (159), and a HelpLine system (157). The network center (37) contains a master database (151) that is used to synchronize the databases stored in each of the network hubs (12), (14), and (16).
摘要翻译：提供一种包括多个网络集线器（12），（14）和（16）的通信系统（10）。网络集线器（12），（14）和（16）通过通信网络（18）互连。系统（10）将具有不同能力的消息系统（24），（26），（28），（30），（32），（34），（36），（40），（42）和（44）并使用不同的通信协议。网络集线器使用连接处理器（52）和（54）的数量与消息系统进行交互。集线器数据库（68）和消息存储（58）用于在网络集线器内存储控制信息和消息传递信息。网络处理器（60）用于与通信系统（10）内的其他集线器交互。消息路由器（72），连接管理器（74），数据复制器（76）和管理事件管理器（78）用于控制处理消息的集线器的操作。通信系统（10）使用管理服务器（64）和事件处理器（70）来管理每个网络集线器的内部操作。网络中心（37）包含客户计算机接口系统（167）和交互式语音响应系统（169），以允许用户与信息提供者数据库（39），客户服务系统（161），消息跟踪系统（163）），计费系统（159）和帮助线系统（157）。网络中心（37）包含主数据库（151），用于同步存储在每个网络集线器（12），（14）和（16）中的数据库。

4. 发明授权

US6031895A Network-based multimedia communications and directory system and method of operation 失效
公开(公告)号：US6031895A
公开(公告)日：2000-02-29
申请号：US056673
申请日：1998-04-07
申请人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
发明人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
IPC分类号： H04L12/58 , H04M3/42 , H04M3/493 , H04M3/50 , H04M3/53 , H04M3/533 , H04M7/00 , H04M7/12 , H04M15/00 , H04Q3/72 , H04M1/64
CPC分类号： H04L12/585 , H04L51/12 , H04M15/00 , H04M15/68 , H04M3/5307 , H04M3/53325 , H04L12/5885 , H04M2201/60 , H04M2215/0196 , H04M2242/22 , H04M3/42102 , H04M3/4228 , H04M3/4931 , H04M7/006 , H04M7/12 , H04Q2213/13093 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13174 , H04Q2213/13196 , H04Q2213/13204 , H04Q2213/13248 , H04Q2213/13336 , H04Q3/72 , Y10S707/99945 , Y10S707/99948
摘要： A communications system (10) is provided which comprises a plurality of network hubs (12), (14), and (16). Network hubs (12), (14), and (16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52) and (54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of the hub in processing a message. A management server (64) and a event processor (70) are used by communications system (10) to manage the internal operations of each of the network hubs. The network center (37) contains a customer computer interface system (167) and an interactive voice response system (169) to allow user interaction with information provider databases (39), a customer service system (161), a message tracking system (163), a billing system (159), and a HelpLine system (157). The network center (37) contains a master database (151) that is used to synchronize the databases stored in each of the network hubs (12), (14), and (16).

5. 发明授权

US5982856A Network-based multimedia communications and directory system and method of operation 失效
公开(公告)号：US5982856A
公开(公告)日：1999-11-09
申请号：US56732
申请日：1998-04-07
申请人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
发明人： Robert S. Cohn , Gregory M. Vaudreuil , Carl F. Schoeneberger , David M. Reece , Carlton C. O'Neal , Carl W. Kalbfleisch , Mark B. Whipple , James R. Swoopes , Alan T. Huch , Michael P. Dimitroff
IPC分类号： H04L12/58 , H04M3/42 , H04M3/493 , H04M3/50 , H04M3/53 , H04M3/533 , H04M7/00 , H04M7/12 , H04M15/00 , H04Q3/72 , H04M1/64
CPC分类号： H04L12/585 , H04L51/12 , H04M15/00 , H04M15/68 , H04M3/5307 , H04M3/53325 , H04L12/5885 , H04M2201/60 , H04M2215/0196 , H04M2242/22 , H04M3/42102 , H04M3/4228 , H04M3/4931 , H04M7/006 , H04M7/12 , H04Q2213/13093 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13174 , H04Q2213/13196 , H04Q2213/13204 , H04Q2213/13248 , H04Q2213/13336 , H04Q3/72 , Y10S707/99945 , Y10S707/99948
摘要： A communications system (10) is provided which comprises a plurality of network hubs (12), (14), and (16). Network hubs (12), (14), and (16) are interconnected through a communications network (18). The system (10) interconnects messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44) having disparate capabilities and using disparate communications protocols. The network hubs use numbers of connection processors (52) and (54) to interact with the messaging systems. A hub database (68) and message store (58) are used to store control information and messaging information within the network hubs. A network processor (60) is used to interact with other hubs within the communications system (10). A message router (72), connection manager (74), data replicator (76), and an administrative event manager (78) are used to control the operations of the hub in processing a message. A management server (64) and a event processor (70) are used by communications system (10) to manage the internal operations of each of the network hubs. The network center (37) contains a customer computer interface system (167) and an interactive voice response system (169) to allow user interaction with information provider databases (39), a customer service system (161), a message tracking system (163), a billing system (159), and a HelpLine system (157). The network center (37) contains a master database (151) that is used to synchronize the databases stored in each of the network hubs (12), (14), and (16).

6. 发明授权

US5940478A Method and system for extended addressing plans 失效
标题翻译：扩展寻址计划的方法和系统
公开(公告)号：US5940478A
公开(公告)日：1999-08-17
申请号：US656629
申请日：1996-05-31
申请人： Gregory M. Vaudreuil , Carl F. Schoeneberger
发明人： Gregory M. Vaudreuil , Carl F. Schoeneberger
IPC分类号： H04M3/50 , H04L12/58 , H04M3/00 , H04M3/42 , H04M3/493 , H04M3/53 , H04M3/533 , H04M7/12 , H04M1/64
CPC分类号： H04M3/4931 , H04M3/5307 , H04M3/53325 , H04M2201/60 , H04M2203/2061 , H04M2203/308 , H04M2207/20 , H04M7/12
摘要： Communications system (10) that includes a network hub system (12), (14) and (16) connectable to external voice messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44). The network hub system (12), (14) and (16) includes a database storage (68) operable to store a telephone-based address and a globally unique address for the users of the communications system (10). The database storage (68) is also operable to store an address type for the external voice messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44).
摘要翻译：包括可连接到外部语音消息系统（24），（26），（28），（30），（32），（34）的网络集线器系统（12），（14）和（16）），（36），（40），（42）和（44）。网络集线器系统（12），（14）和（16）包括可操作以存储通信系统（10）的用户的基于电话的地址和全球唯一地址的数据库存储器（68）。数据库存储器（68）还可操作以存储用于外部语音消息系统（24），（26），（28），（30），（32），（34），（36），（40）的地址类型），（42）和（44）。

7. 发明授权

US4574305A Remote hub television and security systems 失效
公开(公告)号：US4574305A
公开(公告)日：1986-03-04
申请号：US522908
申请日：1983-08-11
申请人： John G. Campbell , Carl F. Schoeneberger
发明人： John G. Campbell , Carl F. Schoeneberger
IPC分类号： H04N17/00 , G08B25/08 , H04N7/173 , H04Q9/00 , H04N7/10
CPC分类号： H04N7/17354 , G08B25/085 , H04N7/17318
摘要： A data communications system provides for the transmission of television signals from a central station to a plurality of remote user stations and the transmission of security data from the user stations back to the central station. The downstream television signals and upstream security data are processed through a plurality of remote hub stations, each servicing several of the remote user terminal stations. The remote hub stations convert downstream television control data and programming signals for reception by the users serviced by that station. The remote hub station also receive security monitoring data transmitted from each user station and generate additional security data for the central station. In one embodiment, the remote hub processing station includes a plurality of converters, each transmitting downstream on a separate dedicated communication link to a remote user station. Each dedicated link also transmits security data upstream from the remote user station to the remote hub processing station. A logic unit at the remote hub station controls the operation of the converters and processes the upstream security data for transmission to the central station. In said embodiment, each user station includes a data separator unit connected to the dedicated communication link from the remote hub processing station for directing downstream television signals to the user's television receiver and directing upstream security data to the logic of the remote hub processing station. The security data is generated at each user station by a plurality of security monitoring devices each providing an alarm status signal to an arming control panel which generates the security data to be transmitted upstream. Another embodiment eliminates the converters at the remote hub processing station in favor of a plurality of splitters transmitting the television signals to the users. Transmission of the signals from the remote hub station to the user stations is carried out by using conventional RF, baseband or optic modulation techniques and may include conventional crosspoint switching techniques.

8. 发明授权

US4322854A Data communications terminal 失效
标题翻译：数据通信终端
公开(公告)号：US4322854A
公开(公告)日：1982-03-30
申请号：US40472
申请日：1979-05-18
申请人： Allan B. Bundens , Carl F. Schoeneberger
发明人： Allan B. Bundens , Carl F. Schoeneberger
IPC分类号： G08B25/08 , H04N7/173 , H04B3/02 , H04N7/10
CPC分类号： G08B25/085 , H04N7/17363 , H04N2007/17381
摘要： A data communications terminal is provided for interfacing with a central data processing system to handle a variety of data acquisition and control functions including the minitoring and control of security devices and pay television receivers. The terminal includes a microcomputer unit for receiving and processing data from the central processing system and from remote units which generate data signals in response to abnormal conditions. A data reception and transmission unit include a radio frequency modem for converting data to and from a frequency modulated format and a data converter for changing the serial bit data to parallel word data. An identification unit provides data to the microcomputer regarding the identification of the terminal which can be compared to the address portion of the incoming data from the central processing system. Data generating means are provided for generating and transmitting response data to the microcomputer for transmission to the central processing system. An address decode unit identifies and actuates the various element in this system. The remote data terminal functions in an "interrupt" mode with relation to the central data system so that it communicates with the central data system only when abnormal conditions are detected. Otherwise, the terminal handles its own internal monitoring and control functions. Transmission of data to and from the terminal is preferably along coaxial cable. When used in conjunction with a television receiver, the same coaxial cable may be used for the transmission of television signals to the receiver. In this mode, the terminal includes a television port unit which is activated by the microcomputer to enable access by the receiver to the cable television network in response to appropriate authorization data from the microcomputer.
摘要翻译：提供数据通信终端，用于与中央数据处理系统进行接口，以处理各种数据采集和控制功能，包括对安全设备和付费电视接收机的监控和控制。该终端包括微处理器单元，用于接收和处理来自中央处理系统的数据和从响应于异常状态产生数据信号的远程单元。数据接收和发送单元包括用于将数据转换为频率调制格式的数据和用于将串行位数据改变为并行字数据的数据转换器的射频调制解调器。识别单元向微型计算机提供关于可以与来自中央处理系统的输入数据的地址部分进行比较的终端的标识的数据。提供数据产生装置，用于产生和发送响应数据到微计算机以传送到中央处理系统。地址解码单元识别和启动该系统中的各种元件。远程数据终端以与中央数据系统相关的“中断”模式工作，使得仅在检测到异常情况时才与中央数据系统进行通信。否则，终端处理自己的内部监控功能。数据往返于终端的传输优选地沿着同轴电缆。当与电视接收机一起使用时，可以使用相同的同轴电缆将电视信号传输到接收机。在该模式中，终端包括电视端口单元，该电视端口单元由微型计算机启动，以响应于来自微型计算机的适当的授权数据使接收器能够接入有线电视网络。

9. 发明授权

US4575755A Video encoder/decoder system 失效
标题翻译：视频编码器/解码器系统
公开(公告)号：US4575755A
公开(公告)日：1986-03-11
申请号：US449985
申请日：1982-12-14
申请人： Carl F. Schoeneberger , Allan B. Bundens , Richard A. Blake , Richard M. Fogle
发明人： Carl F. Schoeneberger , Allan B. Bundens , Richard A. Blake , Richard M. Fogle
IPC分类号： H04N7/171 , H04N7/167
CPC分类号： H04N7/171
摘要： An apparatus and method for encoding and decoding a television signal are disclosed in which the horizontal sync pulses and the first section of the video signal are inverted, and the inverted horizontal sync pulses and video signals are reduced in amplitude by a predetermined amount.
摘要翻译：公开了一种用于对电视信号进行编码和解码的装置和方法，其中水平同步脉冲和视频信号的第一部分被反转，并且反相的水平同步脉冲和视频信号以幅度减小预定量。

10. 发明授权

US4862268A Addressable cable television control system with video format data transmission 失效
标题翻译：具有视频格式数据传输的可寻址有线电视控制系统
公开(公告)号：US4862268A
公开(公告)日：1989-08-29
申请号：US708236
申请日：1985-04-18
申请人： John G. Campbell , Carl F. Schoeneberger , Allan B. Bundens , Richard M. Fogle , John R. Lemburg
发明人： John G. Campbell , Carl F. Schoeneberger , Allan B. Bundens , Richard M. Fogle , John R. Lemburg
IPC分类号： H04N7/03 , H04N7/088 , H04N7/16 , H04N7/167 , H04N7/173
CPC分类号： H04N7/03 , H04N21/4221 , H04N21/4532 , H04N21/4755 , H04N21/478 , H04N21/4882 , H04N7/0888 , H04N7/162 , H04N7/1675 , H04N7/17363
摘要： An addressable cable television control-system controls television program and data signal transmission from a central station to a plurality of user stations. The data signals include both control and text signals in video line format which are inserted on the vertical interval of the television signals, thereby freeing all channels for transmission of both television and data signals. Moreover, full-channel teletext data in video line format may be transmitted on dedicated text channels with the modification of only head end processors. An intelligent converter at each remote user location uses the data signals to control access to the system on the basis of channel, tier of service, special event and program subject matter. The converter uses a graphics display generator to generate display signals for the presentation of the text data on the television receiver and for the generation of predetermined messages for the viewer concerning access, emergencies and other functions. The converter processes vertical interval text data and selected full-channel text data, both transmitted in video line format. The keyboard of the subscriber provides a number of different functional inputs for the subscriber to interface with the system. The converter also includes apparatus for interfacing with two-way interactive data acquisiton and control systems.
摘要翻译：可寻址的有线电视控制系统控制从中心站到多个用户站的电视节目和数据信号传输。数据信号包括插入在电视信号的垂直间隔上的视频行格式的控制和文本信号，从而释放用于电视和数据信号两者传输的所有信道。此外，视频行格式的全频道图文电视数据可以仅在头端处理器的修改下在专用文本信道上发送。每个远程用户位置的智能转换器使用数据信号来控制对信道，服务层次，特殊事件和节目主题的访问。该转换器使用图形显示发生器来生成用于在电视接收机上呈现文本数据的显示信号，并为观看者生成关于访问，紧急情况和其他功能的预定消息。转换器处理垂直间隔文本数据和选择的全频道文本数据，均以视频行格式传输。用户的键盘为用户提供了许多不同的功能输入，用于与系统进行接口。转换器还包括用于与双向交互数据采集和控制系统进行接口的设备。

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