公开(公告)号：US4318125A

公开(公告)日：1982-03-02

申请号：US33063

申请日：1979-04-25

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04K1/06 ,  H04L9/34 ,  H04N7/169 ,  H04N7/16 ,  H04N7/04

CPC classification number: H04N7/169

Abstract: An audio scrambler digitally samples a continuous audio signal, scrambles the derived samples and inserts at least one scrambled sample in the unoccupied region of the video signals of a video system for transmission line per line as an analog composite audio-video signal. A RAM device is used for this purpose which has the digital samples stored sequentially, then read at random. A special memory arrangement is used as a scratchpad in order to insure that while addressing the RAM at random there will be no repetition, nor omission of a particular address. Provision is made for the insertion of more than one sample per video line, in particular while transmitting severe audio signals on the same video system. The same technique is used at the receiver end for unscrambling the samples once extracted from the video lines.

Abstract translation: 音频加扰器对连续的音频信号进行数字采样，对导出的样本进行加扰，并将至少一个加扰样本插入视频系统的视频信号的未占用区域，以便每行传输线作为模拟复合音频 - 视频信号。 为此，使用RAM装置，其中数字采样顺序存储，然后随机读取。 使用特殊的存储器布置作为暂存器，以便确保随机地寻址RAM，不会重复，也不会省略特定的地址。 规定每个视频线插入多个采样，特别是在同一个视频系统上传输严重的音频信号时。 在接收机端使用相同的技术来对从视频行提取的样本进行解扰频。

公开(公告)号：US4688260A

公开(公告)日：1987-08-18

申请号：US785815

申请日：1985-10-09

Applicant: Harold B. Shutterly ,  Joseph S. Malingowski

Inventor： Harold B. Shutterly ,  Joseph S. Malingowski

IPC: H04B10/00 ,  H04B10/02 ,  H04B10/16 ,  H04B10/17 ,  H04B10/20 ,  H04B9/00

CPC classification number: H04B10/278 ,  H04B10/27 ,  H04B10/271 ,  H04B10/2725

Abstract: A T-connection fiber-optical repeater employs redundant electrical-to-optical converters for generating optical signals to be distributed to terminal devices connected the repeater, and redundant optical-to-electrical converters for receiving optical signals from the terminal devices. Reliability is markedly increased by including one or two mixing stars in the fiber system between the converter and the repeaters. The number of converters and supporting circuitry that is needed can be reduced by coupling more than one fiber from the star or stars to each converter. The reliability of the repeater can be further enhanced by using redundant optical-to-electrical converters to receive optical signals from other repeaters and by using redundant electrical-to-optical converters to emit optical signals to other repeaters. Monitoring optical-to-electrical converters can be coupled to the stars in order to detect failure of electrical-to-optical converters connected to the stars.

Abstract translation: T连接光纤中继器采用冗余电光转换器，用于产生分配给连接到中继器的终端设备的光信号，以及用于从终端设备接收光信号的冗余光电转换器。 通过在转换器和转发器之间的光纤系统中包括一个或两个混合星，显着增加了可靠性。 需要的转换器和支持电路的数量可以通过将来自星形或星形的多根光纤耦合到每个转换器来减少。 通过使用冗余的光电转换器来接收来自其它中继器的光信号，以及通过使用冗余的电 - 光转换器向其它中继器发射光信号，可以进一步增强中继器的可靠性。 监控光电转换器可以耦合到恒星，以便检测连接到恒星的电 - 光转换器的故障。

公开(公告)号：US4641371A

公开(公告)日：1987-02-03

申请号：US692254

申请日：1985-01-16

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: G02B6/00 ,  H04B10/00 ,  H04B10/20 ,  H04B9/00

CPC classification number: H04B10/271 ,  H04B10/27 ,  H04B10/2725

Abstract: A multi-star fiber optic network includes a series of two or more passive transmission stars disposed in different local areas, each star serving terminal devices in its local area. A pair of repeaters between each successive star of the series receive optical signals on one channel and transmit the information on at least one different channel, thereby avoiding repeated reflections between successive stars. Wavelength multiplexing, frequency modulation, and amplitude modulation techniques may be employed to provide the different channels, one of which may be a baseband channel. Modified amplitude techniques may be employed to provide directional enable or inhibit signals on different channels.

Abstract translation: 多星光纤网络包括一系列两个或多个被动传输恒星，其设置在不同的局部区域中，每个星形服务于其局部区域中的终端设备。 串联的每个连续星之间的一对中继器在一个通道上接收光信号，并且在至少一个不同的信道上发送信息，从而避免连续恒星之间的反复反射。 可以采用波长复用，频率调制和幅度调制技术来提供不同的信道，其中之一可以是基带信道。 可以采用修改的幅度技术来提供在不同信道上的定向启用或禁止信号。

公开(公告)号：US4654889A

公开(公告)日：1987-03-31

申请号：US698332

申请日：1985-02-05

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04B10/00 ,  H04B10/20 ,  H04B9/00

CPC classification number: H04B10/278 ,  H04B10/27 ,  H04B10/271 ,  H04B10/272

Abstract: A multi-star fiber optic network achieves improved access periods by grouping terminal devices into subnetworks that are connected to a bus, with token passing or collision detection being localized to individual subnetworks and with communication between subnetworks being conducted over the bus via non-interfering optical channels. The optical channels may be obtained by using light sources having different wavelengths or by modulating light at different channel frequencies. Each subnetwork includes an N-to-1 star which receives optical signals from terminal devices in the subnetwork and 1-to-N star which distributes optical signals to terminal devices in the subnetwork. Each subnetwork also includes a transmit repeater connected between the N-to-1 star and the bus to transmit messages which are addressed to other subnetworks on a unique channel, and a receive repeater connected between the bus and the 1-to-N star to receive messages on the channels assigned to other subnetworks. An electrical signal path connects the transmit repeater of a subnetwork with the receive repeater thereof to provide a signal path which does not utilize the bus. A buffer memory within the receive repeater of each subnetwork temporarily stores messages for subsequent distribution within the subnetwork. In order to avoid overloading any particular subnetwork when a token passing protocol is employed, for example, other subnetworks temporarily delay passage of the token when an outgoing message is generated. During this temporary delay messages stored in the buffer of the receive repeater are distributed.

Abstract translation: 多星光纤网络通过将终端设备分组到连接到总线的子网络来实现改进的接入周期，令牌通过或冲突检测被定位到各个子网络，并且子网络之间的通信通过总线经由非干扰光学 频道 可以通过使用具有不同波长的光源或通过调制不同信道频率的光来获得光信道。 每个子网包括N到1星，其接收来自子网中的终端设备的光信号和将光信号分配到子网中的终端设备的1对N星。 每个子网络还包括连接在N到1星和总线之间的发射中继器，以发送寻址到唯一信道上的其他子网络的消息，以及连接在总线与1对N星之间的接收转发器 在分配给其他子网络的频道上接收消息。 电信号路径将子网的发射中继器与其接收转发器连接，以提供不利用总线的信号路径。 每个子网络的接收中继器内的缓冲存储器临时存储用于后续分发在子网内的消息。 为了避免在采用令牌通过协议时超载任何特定子网，例如，当产生传出消息时，其他子网络暂时延迟令牌的通过。 在该暂时延迟期间，存储在接收中继器的缓冲器中的消息被分发。

公开(公告)号：US4065794A

公开(公告)日：1977-12-27

申请号：US637552

申请日：1975-12-04

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: G11B20/00 ,  H04N1/21 ,  H04N5/92 ,  H04N5/785 ,  G11B27/30

CPC classification number: H04N5/9203 ,  G11B20/00007 ,  H04N1/32117 ,  H04N5/9201 ,  H04N2201/3264

Abstract: In an audio-video program consisting of time compressed segments of audio information in the format of TV lines and video change signals associated with one or more of the audio segments, and video information to be displayed in response to the video change signals stored in separate portions of a magnetic or video storage medium, the playback of video information is synchronized to the playback of audio information by the occurrence of the video change signals present in the recorded audio information.

Abstract translation: 在由TV线的格式的音频信息的时间压缩段和与一个或多个音频段相关联的视频改变信号组成的音频视频节目中，以及响应于存储在单独的视频改变信号中而显示的视频信息 通过存在于所记录的音频信息中的视频改变信号的发生，视频信息的重放与音频信息的重放同步。

公开(公告)号：US4662715A

公开(公告)日：1987-05-05

申请号：US695039

申请日：1985-01-25

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04J14/00 ,  H04B10/00 ,  H04B10/20 ,  H04J14/02 ,  G02B6/28

CPC classification number: H04B10/278 ,  H04B10/27 ,  H04J14/02 ,  H04J14/0201

Abstract: In order to avoid coupling losses, a fiber optic network employs wavelength sensitive devices to couple signals to a bus and split signals from the bus. A terminal device connected to the bus has an optical transmitter which produces signals at a wavelength that is different from the wavelengths employed in optical transmitters of other terminal devices connected to the bus. Furthermore the light is modulated to obtain a frequency channel identifying one or more terminal devices which are to receive messages from the bus. The bus is connected to a repeater which translates between wavelength and frequency channel. Frequency channels may be obtained by amplitude modulating or frequency modulating the light.

Abstract translation: 为了避免耦合损耗，光纤网络使用波长敏感设备将信号耦合到总线并从总线分离信号。 连接到总线的终端设备具有光发送器，该光发射器产生波长不同于连接到总线的其他终端设备的光发射机中使用的波长的信号。 此外，光被调制以获得标识要从总线接收消息的一个或多个终端设备的频道。 总线连接到在波长和频率通道之间转换的中继器。 可以通过幅度调制或频率调制光来获得频道。

公开(公告)号：US4266243A

公开(公告)日：1981-05-05

申请号：US33065

申请日：1979-04-25

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/088 ,  H04N7/169 ,  H04N7/16 ,  H04N7/04 ,  H04N7/08

CPC classification number: H04N7/0881 ,  H04N7/1696

Abstract: An audio scrambler operates on segments of audio divided from a continuous audio signal to rotate head-to-tail the string of information contained in the segment by an amount which is at pseudo-random between the successive segments. When the segments are compressed to video format, the scrambled compressed audio signals are inserted into an unused line of the vertical blanking space of a television system for transmission with the video signals. The inserted audio is combined with decoy signals, also in the vertical blanking space to increase security of transmission. Concurrent scrambling of compressed audio signals and video signals is provided.

Abstract translation: 音频扰频器对从连续音频信号分割的音频段进行操作，以将包含在片段中的信息串头对头地旋转在连续片段之间伪随机的量。 当片段被压缩成视频格式时，加扰的压缩音频信号被插入到电视系统的垂直消隐空间的未使用的行中，以便与视频信号一起传输。 插入的音频与诱饵信号组合，也在垂直消隐空间中，以增加传输的安全性。 提供压缩音频信号和视频信号的并发加扰。

公开(公告)号：US4070693A

公开(公告)日：1978-01-24

申请号：US776329

申请日：1977-03-10

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04K1/00 ,  H04N7/088 ,  H04N7/169 ,  H04N1/44

CPC classification number: H04N7/088 ,  H04N7/1696

Abstract: A system for transmitting a secure television image is as disclosed. At the transmitter each line of the television image is digitized to generate a series of digital numbers representing the complete video line. The digital numbers representing the picture portion of each scan line are cyclically rotated by a random amount leaving the synchronizing portion unchanged. The digital numbers are converted to an analog signal which is filtered to generate a composite signal with the picture portion of each line cyclically shifted by a random amount. At the receiver the signal is digitized and the picture portion of each line is rotated to restore the picture portions of each line to their original position. The process of rotation is identical to that used at the transmitter except that the amount of rotation must be adjusted to restore all portions of the picture portion of the signal to their original position. The degree of security resulting from this system depends on the complexity of the system used to determine the random rotation of the individual scan lines.

Abstract translation: 公开了一种用于发送安全电视图像的系统。 在发射机处，电视图像的每条线被数字化以产生表示完整视频行的一系列数字数字。 表示每条扫描线的图像部分的数字数字循环旋转一个随机数，离开同步部分不变。 数字数字被转换成模拟信号，该模拟信号被滤波以产生复合信号，每行的图像部分循环移位一个随机量。 在接收机处，信号被数字化，并且每行的图像部分被旋转以将每行的图像部分恢复到其原始位置。 旋转过程与发射机使用的过程相同，只是必须调整旋转量以将信号的图像部分的所有部分恢复到其原始位置。 由该系统产生的安全程度取决于用于确定各扫描线的随机旋转的系统的复杂性。

公开(公告)号：US4899383A

公开(公告)日：1990-02-06

申请号：US94186

申请日：1987-09-08

Applicant: Charles W. Einolf, Jr. ,  Harold B. Shutterly ,  Shan C. Sun ,  Russel W. Gonnam ,  Roger E. Ray ,  Karl C. Koch ,  Pamela M. Maynard-Nenno

Inventor： Charles W. Einolf, Jr. ,  Harold B. Shutterly ,  Shan C. Sun ,  Russel W. Gonnam ,  Roger E. Ray ,  Karl C. Koch ,  Pamela M. Maynard-Nenno

IPC: H02H3/28 ,  H02H1/00 ,  H04J3/06 ,  H04L5/22

CPC classification number: H04J3/0608 ,  H02H1/0069

Abstract: The multiplexer in a multichannel, secure digital communication system repetitively embeds a sequence of byte length uniquely coded synchronizing signals in each of n successive frames of one channel of a multichannel, time multiplexed digital bit stream. Redundant protective relay data and associated parity check data are embedded in four of the n frames in a second, preferably adjacent channel, with the remaining of the n frames in the second channel containing additional of the uniquely coded synchronizing signals. The time multiplexed serial bit stream is transmitted to a remote station, preferably by fiber optic communications media. The most recent bits of the received serial bit stream equal in number to the number of bits spanned by the two channels in n frames are retained in n-1 serially connected serial in, serial out shift registers. Sixteen bit portions, a frame apart, of the retained most recent bits of the serial bit stream are applied to n serial in, parallel out shift registers. The parallel outputs of these shift registers corresponding to the frames of the two channels encoded with the synchronizing signals are compared with the sequence of uniquely coded signals stored in addresses in PROMs. When the compared signals match, which will occur once in every n frames, a synchronization signal is generated and the protective relay data and parity check data are read directly from the other parallel outputs of the serial in, parallel out shift registers. Similar rapid resynchronization of voice and data channels in the time multiplexed serial bit stream can be achieved by counting the number of bits in the bit stream from the generation of the synchronization signal in the relay protection channels to the beginning of the time slot for a selected voice or data channel.

公开(公告)号：US4641373A

公开(公告)日：1987-02-03

申请号：US698333

申请日：1985-02-05

Applicant: Harold B. Shutterly

Inventor： Harold B. Shutterly

IPC: H04B10/20 ,  G02B6/28 ,  G02B6/287 ,  H04B10/00 ,  H04B10/02 ,  H04B10/16 ,  H04B9/00

CPC classification number: H04B10/29

Abstract: A T-connection fiber-optic repeater is used in a fiber-optic network wherein the repeaters are connected by optical fibers to other repeaters and the repeaters are also connected to stars, in such a manner that an optical signal can move from repeater to repeater without having to traverse a star. Each repeater includes optical receivers for receiving optical signals from the adjacent repeaters and from a nearby star and optical transmitters for emitting optical signals to the adjacent repeaters and the nearby star. Since signal reflections from the nearby star arrive almost immediately after signals from the adjacent repeaters, an inhibit circuit is used to gate signals from the nearby star when signals are being received from either of the adjacent repeaters. This avoids instability arising from repeated signal reflection without imposing a significant time delay as reflected signals propagate through long lengths of fiber. Modified embodiments permit a repeater to support more than one nearby star or to be used in a branching fiber-optic network.

Abstract translation: 在光纤网络中使用T形连接光纤中继器，其中中继器通过光纤连接到其他中继器，并且中继器也以星形连接，使得光信号可以从中继器移动到中继器 而不必横穿一颗星星。 每个中继器包括用于接收来自相邻中继器的光信号的光接收器，以及用于向相邻中继器和附近星光发射光信号的附近星形和光发射机。 由于来自附近的星星的信号反射几乎在来自相邻中继器的信号之后立即到达，所以当从相邻中继器接收到信号时，使用禁止电路来选择来自附近恒星的信号。 这避免了由于重复信号反射引起的不稳定性，而不会因为反射信号通过长长度的光纤传播而施加显着的时间延迟。 修改的实施例允许中继器支持多于一个附近的星形或者用于分支光纤网络。