公开(公告)号：US5481542A

公开(公告)日：1996-01-02

申请号：US149929

申请日：1993-11-10

Applicant: Gary L. Logston ,  Anthony J. Wasilewski ,  Timothy H. Addington ,  William E. Wall, Jr.

Inventor： Gary L. Logston ,  Anthony J. Wasilewski ,  Timothy H. Addington ,  William E. Wall, Jr.

IPC: H04J3/16 ,  H04J14/02 ,  H04N7/167 ,  H04N7/173 ,  H04N7/22 ,  H04N21/472 ,  H04Q11/04

CPC classification number: H04N21/47202 ,  H04J3/1694 ,  H04N7/1675 ,  H04N7/17318 ,  H04N7/22 ,  H04J14/0298 ,  H04J2203/0032 ,  H04J2203/0033 ,  H04J2203/0041 ,  H04J2203/008

Abstract: A digital video, audio and data distribution system which enables a set-top terminal (STT) associated with a customer's television set or other information presentation device to request interactive digital video, audio and data services from a service provider (SP) through the use of control system messages transmitted via a hi-directional signalling path. The requested interactive service is transmitted from the service provider over a portion of the bandwidth of a broadband transmission network which is dedicated to interactive digital services. A Video Session Connection (VSC) is provided for setting up and maintaining interactive sessions between the set-top terminal and a video service provider during the time the interactive programming is provided to the customer. The set-top terminal and service provider establish the Video Session Connection via a two-way signalling path within the bandwidth of the transmission medium into the customer's home. Applications of the system of the invention include "movie on demand" services where the set-top terminal not only requests a movie to be transmitted from the service provider for immediate transmission, but also the bi-directional command channel permits the set-top terminal to control the video presentation by sending commands such as Play, Pause, Fast-Forward and the like to the Service Provider while the movie is being transmitted. Other applications of the invention include on-line data retrieval services, shop at home services and other services which require the use of an interactive connection.

Abstract translation: 一种数字视频，音频和数据分发系统，其使与客户的电视机或其他信息呈现设备相关联的机顶终端（STT）能够通过使用从服务提供商（SP）请求交互式数字视频，音频和数据服务 经由高频信令路径发送的控制系统消息。 所请求的交互服务是通过专用于交互式数字服务的宽带传输网络的一部分带宽从业务提供商发送的。 提供视频会话连接（VSC），用于在向客户提供交互式节目编排时，在机顶终端和视频服务提供商之间设置和维护交互式会话。 机顶终端和服务提供商通过传输介质的带宽内的双向信令路径建立视频会话连接到客户的家中。 本发明的系统的应用包括“电影点播”服务，其中机顶终端不仅要求从服务提供商发送电影以供立即发送，而且双向命令信道允许机顶终端 通过在电影发送时向服务提供商发送诸如播放，暂停，快进等命令来控制视频呈现。 本发明的其他应用包括在线数据检索服务，家庭服务商店和需要使用交互式连接的其他服务。

公开(公告)号：US5467384A

公开(公告)日：1995-11-14

申请号：US191303

申请日：1994-02-03

Applicant: Russell A. Skinner, Sr.

Inventor： Russell A. Skinner, Sr.

IPC: H04B10/00 ,  H04H20/79 ,  H04H60/94 ,  H04H60/97 ,  H04M20060101 ,  H04M19/00 ,  H04N7/10 ,  H04N7/22 ,  H04Q11/00 ,  H04M9/00 ,  H04H1/00 ,  H04M11/04

CPC classification number: H04H20/79 ,  H04B10/808 ,  H04H60/94 ,  H04H60/97 ,  H04M19/00 ,  H04M19/001 ,  H04N7/10 ,  H04N7/22 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q11/0071

Abstract: A fiber optic/coaxial cable telephony network including power. Power is supplied through the coaxial cable portion of the video network to an cable network unit where the power is converted and supplied to the equipment including customer premises equipment.

Abstract translation: 包括电源的光纤/同轴电缆电话网络。 电力通过视频网络的同轴电缆部分提供给电缆网络单元，其中电力被转换并提供给包括客户驻地设备的设备。

公开(公告)号：US5457560A

公开(公告)日：1995-10-10

申请号：US243193

申请日：1994-05-16

Applicant: Randall B. Sharpe ,  J. Richard Jones ,  Thomas E. O'Shea ,  Paul W. Casper ,  James W. Toy ,  Gregory M. Evans ,  Richard N. Sears

Inventor： Randall B. Sharpe ,  J. Richard Jones ,  Thomas E. O'Shea ,  Paul W. Casper ,  James W. Toy ,  Gregory M. Evans ,  Richard N. Sears

IPC: H04B10/272 ,  H04J3/06 ,  H04J3/16 ,  H04J14/08 ,  H04N7/173 ,  H04N7/22 ,  H04B10/00

CPC classification number: H04J3/1694 ,  H04J14/08 ,  H04J3/0682 ,  H04N7/173 ,  H04N7/22

Abstract: A fiber optic telecommunication system has master site linked to a plurality of subscriber interface sites by a single pair of optical fibers. Downlink messages are transmitted in a continuous TDM format over a first optical fiber from the master site to subscriber interface sites, and in a burst mode TDMA format over a second optical fiber from the subscriber interface sites to the master site. Each subscriber interface site is coupled to the optical fiber link by way of a multiple fan-out fiber coupling pedestal at a common location on the fiber pair. To prevent collisions between successive uplink bursts from the subscriber interface sites, a guard band separates successive uplink messages from one another. The guard band duration accommodates optical fiber transmission distance between the common location on the uplink optical fiber and the subscriber interface site whose differential optical fiber transmission distance from the common location is greatest. A subscriber location has a television decoder associated with the subscriber's television set, through which television channel selection signals are input by the subscriber for transmission from the subscriber interface site to the master site. Power is provided by way of a replaceable battery pack, housed in a subterrestrial bell jar configuration, effectively insulating the battery pack from extreme temperature changes and the intrusion of moisture.

Abstract translation: 光纤电信系统具有通过一对光纤链接到多个用户接口站点的主站点。 下行链路消息以连续的TDM格式通过第一光纤从主站点到用户接口站点以第二光纤从用户接口站点到主站点以突发模式TDMA格式发送。 每个用户接口站点通过在光纤对上的公共位置处的多扇出光纤耦合基座耦合到光纤链路。 为了防止来自订户接口站点的连续上行链路突发之间的冲突，保护带将相继的上行链路消息彼此分离。 保护频段持续时间适应上行光纤上的公共位置与与公共位置的差分光纤传输距离最大的用户接口位置之间的光纤传输距离。 用户位置具有与用户电视机相关联的电视解码器，通过该电视解码器，用户输入电视频道选择信号以从用户接口站点传送到主站点。 电源通过可更换的电池组提供，容纳在地下钟罩配置中，有效地使电池组绝缘不受极端温度变化和潮湿侵入。

公开(公告)号：US5438370A

公开(公告)日：1995-08-01

申请号：US275332

申请日：1994-07-14

Applicant: Guy A. Primiano ,  Ajith N. Nair

Inventor： Guy A. Primiano ,  Ajith N. Nair

IPC: H04N5/44 ,  H04N5/445 ,  H04N7/01 ,  H04N7/025 ,  H04N7/088 ,  H04N7/167 ,  H04N7/22 ,  H04N7/54 ,  H04N11/04 ,  H04N11/14 ,  H04N11/16 ,  H04N21/43 ,  H04N21/434 ,  H04N21/4402 ,  H04N21/488 ,  H04N7/087

CPC classification number: H04N7/0885 ,  H04N11/042 ,  H04N11/143 ,  H04N11/162 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/440281 ,  H04N21/4884 ,  H04N5/4401 ,  H04N7/01 ,  H04N7/025 ,  H04N7/088 ,  H04N7/0882 ,  H04N7/0884 ,  H04N7/1675 ,  H04N7/22 ,  H04N7/54 ,  H04N5/445

Abstract: An apparatus for providing close captioning in a digital program services delivery system comprises: a rate converter circuit for receiving video codes and outputting video data; a video decoder circuit for receiving the video data and outputting digital Y, U, V data; a digital to analog converter/analog encoder circuit for converting the Y, U, V data into an analog video signal in a prescribed format; a line 21 former circuit for receiving close captioning digital data and forming a line 21 analog signal; and a multiplexor for inserting the line 21 analog signal into the analog video signal.

Abstract translation: 一种用于在数字节目服务传送系统中提供紧密字幕的装置，包括：用于接收视频码并输出视频数据的速率转换器电路; 视频解码器电路，用于接收视频数据并输出数字Y，U，V数据; 用于将Y，U，V数据转换为规定格式的模拟视频信号的数模转换器/模拟编码器电路; 用于接收紧密字幕数字数据并形成线21模拟信号的线路21原线电路; 以及用于将线路21模拟信号插入模拟视频信号的多路复用器。

公开(公告)号：US5204767A

公开(公告)日：1993-04-20

申请号：US772486

申请日：1991-10-07

Applicant: Hiroaki Nakata ,  Kuniaki Utsumi ,  Kazuki Maeda

Inventor： Hiroaki Nakata ,  Kuniaki Utsumi ,  Kazuki Maeda

IPC: G06F21/10 ,  H04J14/02 ,  H04K1/00 ,  H04N7/16 ,  H04N7/167 ,  H04N7/171 ,  H04N7/22

CPC classification number: H04B10/69 ,  H04B10/675 ,  H04J14/0226 ,  H04J14/0234 ,  H04J14/0298 ,  H04N7/16 ,  H04N7/22 ,  H04J14/0282

Abstract: A pay-channel transmission system for a CATV has an optical transmission unit and an optical receiver unit. The optical transmission unit includes pay-channel television signals optically multiplexed by a .lambda..sub.1 wavelength semiconductor laser and non-pay-channel television signals optically multiplexed by a .lambda..sub.2 wavelength semiconductor laser. The optical receiver unit includes an optical filter for filtering the .lambda..sub.1 wavelength data. Thus, a non-subscriber having the optical filter is prevented from receiving the pay-channel television signals, and a subscriber having no optical filter is able to receive both the pay-channel television signals and non-pay-channel television signals.

Abstract translation: 用于CATV的付费频道传输系统具有光传输单元和光接收单元。 光传输单元包括通过λ1波长半导体激光器光复用的付费频道电视信号和通过λ2波长半导体激光器光复用的非付费频道电视信号。 光接收器单元包括用于滤波λ1波长数据的滤光器。 因此，防止具有滤光器的非用户接收付费频道电视信号，并且没有滤光器的用户能够接收付费频道电视信号和非付费频道电视信号两者。

公开(公告)号：US5168535A

公开(公告)日：1992-12-01

申请号：US750834

申请日：1991-08-27

Applicant: Herzel Laor

Inventor： Herzel Laor

IPC: G02B6/12 ,  G02B6/28 ,  G02B6/30 ,  G02B6/35 ,  G02B6/38 ,  G02B6/42 ,  G02F1/313 ,  H04N7/22 ,  H04Q3/52

CPC classification number: G02B6/359 ,  G02B6/12004 ,  G02B6/2804 ,  G02B6/30 ,  G02B6/3803 ,  G02B6/4227 ,  G02B6/4246 ,  H04N7/22 ,  G02B6/3512 ,  G02B6/3552 ,  G02B6/3556

Abstract: The improved integrated optic switch includes a thin film optical waveguide on a substrate. Each of one or more input optical fibers is coupled to the waveguide and propagates a wide angle beam of light along it. Two or more light receptors, each having an optical receptor fiber, are positioned in the path(s) of the beam(s). Each receptor includes a lens for focusing each beam to a "spot" of light and a transducer for aligning the spot and the receptor fiber. Any receptor fiber may thereby receive light from any beam of light and two or more receptor fibers may simultaneously receive light from any beam.

Abstract translation: 改进的集成光开关包括在衬底上的薄膜光波导。 一个或多个输入光纤中的每一个耦合到波导并且沿其传播广角光束。 每个具有光学接收器光纤的两个或更多个光接收器位于光束的路径中。 每个接收器包括用于将每个光束聚焦到“光点”的透镜和用于对准光点和受体光纤的换能器。 任何受体纤维因此可以从任何光束接收光，并且两个或更多个受体纤维可以同时从任何光束接收光。

公开(公告)号：US5153762A

公开(公告)日：1992-10-06

申请号：US495723

申请日：1990-03-19

Applicant: David R. Huber

Inventor： David R. Huber

IPC: H04B10/148 ,  H04B10/158 ,  H04B10/207 ,  H04N7/22

CPC classification number: H04B10/60 ,  H04B10/272 ,  H04N7/22

Abstract: Individual AM channel signals are recovered in the optical domain from a band of signals distributed on an optical fiber. A semiconductor optical amplifier is coupled to receive the band of optical channel signals. The band is defined by a lowest channel frequency f.sub.L and a highest channel frequency f.sub.H wherein f.sub.H

Abstract translation: 单个AM信道信号在光域中从分布在光纤上的信号频带恢复。 耦合半导体光放大器以接收光通道信号的频带。 该频带由最低频道频率fL和最高频道频率fH定义，其中fH <2fL。 本地振荡器以将所选择的信道信号转换到频带外的另一频率的频率来调制放大器的增益，用于电域中的后续处理。

公开(公告)号：US5136411A

公开(公告)日：1992-08-04

申请号：US409214

申请日：1989-09-19

Applicant: Woo H. Paik ,  David Grubb, III ,  David E. Charlton

Inventor： Woo H. Paik ,  David Grubb, III ,  David E. Charlton

IPC: H04B10/00 ,  H04H20/69 ,  H04J14/02 ,  H04N7/173 ,  H04N7/22

CPC classification number: H04H20/69 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0282 ,  H04N7/17309 ,  H04N7/17345 ,  H04N7/17363 ,  H04N7/22 ,  H04J14/0298 ,  H04N2007/1739

Abstract: A CATV system uses a single single-mode optical fiber for transmitting a composite optical signal containing television signals in different frequency channels for a plurality of subscriber terminals from a headend terminal to a distribution terminal, and converts the transmitted signals at the distribution terminal into electrical signals for distribution to a plurality of subscriber terminals over a plurality of coaxial cables. The distribution terminal further receives electrical service request signals from each of the plurality of subscriber terminals, and converts each received service request signal into an optical service request signal for transmission to the headend terminal over the same single-mode optical fiber as used from transmitting the composite optical signal. Wavelength-division multiplexer/demultiplexers couple the optical fiber to the headend terminal and the distribution terminal to enable bidirectional transmission. The subscriber terminal is responsive to a control signal transmitted to the subscriber terminal for enabling a receiver therein to receive television signals transmitted to the subscriber terminal over a selected one of said different given frequency channels. The headend terminal includes a digital switch that is operated in coordination with the control signals that are transmitted to the subscriber terminals for enabling reception of only selected frequency channels in the respective subscriber terminals, by frequency positioning the television signal indicated by the service request signal received from a given subscriber terminal within the composite signal for transmission to the given subscriber terminal over the given frequency channel enabled by the control signal that is transmitted to the given subscriber terminal.

Abstract translation: CATV系统使用单个单模光纤将多个用户终端的不同频率信道中包含电视信号的复合光信号从头端到分配终端发送，并将分配终端处的发送信号转换为电 用于通过多个同轴电缆分配给多个用户终端的信号。 分配终端还从多个用户终端中的每一个接收电服务请求信号，并将每个所接收的服务请求信号转换成光业务请求信号，以便通过相同的单模光纤传输到头端终端， 复合光信号。 波分复用器/解复用器将光纤耦合到头端和分配终端以实现双向传输。 用户终端响应于发送到用户终端的控制信号，使得其中的接收机能够接收通过所选择的所述不同给定频率信道中的所选择的一个发送到用户终端的电视信号。 前端终端包括数字交换机，其与传送到用户终端的控制信号协同操作，以便仅通过接收的服务请求信号指示的电视信号频率定位，以便仅接收各个用户终端中的选定频道 从复合信号内的给定用户终端，通过由发送给给定用户终端的控制信号使能的给定频率信道传输给给定用户终端。

公开(公告)号：US5107360A

公开(公告)日：1992-04-21

申请号：US609194

申请日：1990-11-05

Applicant: David R. Huber

Inventor： David R. Huber

IPC: H04J14/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04J14/02 ,  H04N7/08 ,  H04N7/081 ,  H04N7/22

CPC classification number: H04J14/0298

Abstract: Apparatus is provided for optically transmitting a plurality of AM modulated RF subcarriers in adjacent octaves. A first laser is modulated to produce a first optical output signal containing a plurality of subcarriers in a first octave. A second laser is modulated to produce a second optical output signal containing a plurality of subcarriers in a second octave. The first output signal is optically filtered to attenuate distortion products falling in the second octave. The second output signal is optically filtered to attenuate distortion products falling in the first octave. The filtered first and second output signals are combined for communication over an optical transmission medium. Where the transmission medium is a single mode optical fiber, filtering can be accomplished using single mode transversal filters.

Abstract translation: 提供了用于在相邻八度中光学地传输多个AM调制的RF子载波的装置。 第一激光器被调制以产生包含第一八度的多个子载波的第一光输出信号。 第二激光器被调制以产生包含第二八度音阶中的多个副载波的第二光输出信号。 第一输出信号被光学滤波以衰减落在第二个八度的失真产物。 对第二输出信号进行光学滤波，以衰减落入第一个八度音阶的失真产物。 被滤波的第一和第二输出信号被组合以通过光传输介质进行通信。 在传输介质是单模光纤的情况下，可以使用单模横向滤波器实现滤波。

公开(公告)号：US5053882A

公开(公告)日：1991-10-01

申请号：US321244

申请日：1989-03-09

Applicant: Masatoshi Yanagidaira

Inventor： Masatoshi Yanagidaira

IPC: H04N5/85 ,  H04B10/00 ,  H04B10/548 ,  H04B10/58 ,  H04N5/93 ,  H04N7/22

CPC classification number: H04N7/22 ,  H04N5/93

Abstract: A video signal optical transmission system reproduces and transmits video and audio signals from an optical disk as pulsed FM signals which are converted to optical signals prior to transmission. No additional frequency modulation is required prior to transmission. With this transmission system, special demodulation circuitry no longer is required, so that existing demodulation circuitry on the receiving side can be used.

Abstract translation: 视频信号光传输系统将来自光盘的视频和音频信号作为脉冲的FM信号进行再现并发送，该信号在传输之前被转换为光信号。 在传输之前不需要额外的频率调制。 利用该传输系统，不再需要特殊的解调电路，因此可以使用接收侧的现有解调电路。