公开(公告)号：WO1993011640A1

公开(公告)日：1993-06-10

申请号：PCT/US1992010110

申请日：1992-11-30

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  BANKER, Robert, O. ,  BACON, Kinney, C. ,  BAGLEY, Julius, B.

IPC: H04N07/16

CPC classification number: H04N21/47 ,  H04N5/44543 ,  H04N7/16 ,  H04N21/47214 ,  H04N21/482

Abstract: Apparatus for providing a user friendly interface to a subscription television terminal comprises a key pad arranged into a plurality of key groupings and an on-screen display controller for generating a plurality of screens for display on an associated television receiver. Five such key groupings are segregated from one another and comprise function keys, initialization keys, channel keys, audio keys and digit keys. The digit keys may be most conveniently arranged in a two dimensional matrix corresponding to a key pad of a conventional tone dialing telephone. Each of the other key groupings may be arranged linearly and differentiated by the use of color or boxes. A method of initializing the cable television terminal comprises the steps of generating a display of a menu structure, actuating the movement of a cursor in one direction through choices presented by a menu by use of a cursor key, and actuating a selection of a menu choice via actuation of a select key. For example, a sleep timer may be implemented in a subscription television terminal for turning off power to an associated television set after a predetermined period of time. Parental control of received channels can be established such that only those having knowledge of a particular code may view the parentally controlled channel. Other features of a terminal in accordance with the invention include messaging, establishing a favorite channel list, pay-per-view, program timing, and terminal control.

Abstract translation: 用于向订阅电视终端提供用户友好界面的设备包括布置成多个密钥分组的键盘和用于生成用于在相关联的电视接收机上显示的多个屏幕的屏幕显示控制器。 五个这样的密钥分组彼此隔离，包括功能键，初始化键，通道键，音频键和数字键。 数字键可以最方便地布置在与常规音调拨号电话的键盘相对应的二维矩阵中。 每个其他键组可以线性排列，并通过使用颜色或框来区分。 一种初始化有线电视终端的方法包括以下步骤：产生菜单结构的显示，通过使用光标键，通过菜单所呈现的选择来促使光标在一个方向上的移动，以及启动菜单选择的选择 通过选择键的启动。 例如，睡眠定时器可以在订阅电视终端中实现，用于在预定时间段之后关闭相关电视机的电力。 可以建立所接收的信道的家长控制，使得仅具有特定代码知识的人可以查看父母控制的信道。 根据本发明的终端的其他特征包括消息传递，建立喜好频道列表，按次付费，节目定时和终端控制。

公开(公告)号：WO1993011639A1

公开(公告)日：1993-06-10

申请号：PCT/US1992010109

申请日：1992-11-30

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  BANKER, Robert, O. ,  BACON, Kinney, C. ,  BAGLEY, Julius, B.

IPC: H04N07/16

CPC classification number: H04N21/4786 ,  H04N7/165 ,  H04N21/4788

Abstract: A subscriber terminal apparatus for a television in an in-band subscription television system is provided. The subscriber terminal includes a receiver for receiving a television signal including video, audio, and data information. A selector selects a channel of the television signal. A memory stores a plurality of barker screens providing messages regarding one or more channels of the television signal. An on-screen display control circuit controls the display of the barker screens on the television. A processor retrieving a barker screen from the memory and supplies the retrieved screen to the on-screen display control circuit if the barker screen provides a message regarding a selected channel. Barker screen information may also be obtained from a dedicated data channel or a six megahertz video barker channel.

公开(公告)号：WO1991012694A1

公开(公告)日：1991-08-22

申请号：PCT/US1991000809

申请日：1991-02-06

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  WEST, Lamar, E., Jr. ,  DURAND, David, P. ,  PAULICK, Melvin ,  PRIMIANO, Anthony

IPC: H04N07/167

CPC classification number: H04K3/825 ,  H04K3/41 ,  H04K3/42 ,  H04K2203/14 ,  H04N7/166

Abstract: A cable television interdiction apparatus (130) comprises a microprocessor actuation and control means (300) for actuating and controlling one or more frequency agile voltage controlled oscillators (341-344). The voltage controlled oscillators (341-344) selectively jam only unauthorized premium programming transmitted from a headend (100) to a particular subscriber. The method of interdiction comprises the steps of generating and storing voltage control words for operating the oscillators (341-344) consistent with a headend selected jamming factor for a particular channel to be jammed and addressably transmitted and stored premium programming authorization data.

Abstract translation: 有线电视遮断装置（130）包括用于致动和控制一个或多个频率敏捷压控振荡器（341-344）的微处理器致动和控制装置（300）。 压控振荡器（341-344）选择性地仅阻止从头端（100）发送到特定用户的非授权高级编程。 截断方法包括以下步骤：产生和存储电压控制字，用于操作与要被卡住和可寻址传输的特定信道的头端选择的干扰因子一致的振荡器（341-344），并存储优质节目授权数据。

公开(公告)号：WO1991008650A1

公开(公告)日：1991-06-13

申请号：PCT/US1990007129

申请日：1990-12-05

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  WEST, Lamar, E., Jr.

IPC: H04N07/167

CPC classification number: H04K3/825 ,  H04K3/42 ,  H04K3/43 ,  H04K2203/14 ,  H04N7/102 ,  H04N7/166 ,  H04N7/167

Abstract: An off-premises negative or positive trap jamming cable television or interdiction system includes a picture carrier controlled automatic gain control circuit (231). A broadband television signal output of a variable gain device (230) is distributed by a radio frequency signal splitter (280) to a number of subscribers. A portion of the output of the variable gain device (230) comprising at least two contiguous television channels is passed to a power level detector (502). A detected power level is compared with a predetermined power level reference (504) for adjusting the gain of the variable gain device (230). The predetermined power level reference is set to equal the attenuation between the off-premises equipment and the subscriber premises plus the desired level at the entrance to the subscriber's premises. The power level of a jamming or interdicting signal for denying access to unauthorized television programs is set to fall within a predetermined range of power levels related to the predetermined power level reference.

Abstract translation: 一种非处方负面或正面的陷阱干扰有线电视或遮断系统包括一个图像载体控制的自动增益控制电路（231）。 可变增益设备（230）的宽带电视信号输出由射频信号分离器（280）分配给多个用户。 包括至少两个连续的电视频道的可变增益装置（230）的输出的一部分被传递到功率电平检测器（502）。 将检测到的功率电平与用于调整可变增益装置（230）的增益的预定功率电平基准（504）进行比较。 预定功率电平基准被设置为等于室外设备与用户房屋之间的衰减加上用户房屋入口处的期望水平。 用于拒绝访问未经授权的电视节目的干扰或干扰信号的功率电平被设置为落入与预定功率电平参考相关的功率电平的预定范围内。

公开(公告)号：WO1991008631A1

公开(公告)日：1991-06-13

申请号：PCT/US1990006783

申请日：1990-11-21

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  PIDGEON, Rezin ,  LITTLE, Frank ,  THOMPSON, Leo

IPC: H04J14/00

CPC classification number: H04N7/22 ,  H04B10/504 ,  H04B10/506 ,  H04J14/0298

Abstract: A plurality of radio frequency channels are separated into two or more contiguous groups of channels, each of such groups occupying less than one octave. A first group of channels occupies a 54 MHz to 106 MHz band, a second band of channels occupies a 108 MHz to 214 MHz band, and optionally, additional channel groups may occupy the bands of 214 MHz through 426 MHz and 426 MHz through 850 MHz. Each sub-band is used to modulate the intensity of the output of a laser (1, 2, 3). Each resulting amplitude modulated light signal is transmitted over an optical link (F1, F2, F3, F4) to a receiving location. Alternatively, the lasers (1, 2, 3) may be selected to generate light at different wavelengths with all outputs transmitted over a single optical link. At the receiving location, each of the optical signals is received and demodulated by a respective individual receiver (51, 52, 53). The demodulated signal is passed through a bandpass filter which reduces harmonics, intermodulation distortions, and noise produced in transmission. The resulting signals are then matched in amplitude before being applied to combiner (69, 70) which converts them back into a single broadband signal. The broadband signal is then processed to reduce discontinuities at the transitions between the sub-bands. All of the baseband television signals can be modulated onto carrier frequencies in the highest sub-band of interest (e.g., in the range of 330 to 550 MHz). Because of the separation of signals provided by multiple optical links (F1, F2, F3, F4), the same carrier frequency may be utilized on each of the links to carry a channel of baseband video information.

公开(公告)号：WO1990013086A1

公开(公告)日：1990-11-01

申请号：PCT/US1990002034

申请日：1990-04-19

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  SMITH, Elizabeth, A. ,  JOHNSON, Lee, R.

IPC: G06F15/16

CPC classification number: H04N7/165 ,  H04N5/44543 ,  H04N7/0888 ,  H04N7/1675 ,  H04N7/17318 ,  H04N21/2143 ,  H04N21/2543 ,  H04N21/47202 ,  H04N21/478

Abstract: An interactive terminal comprises a processor, a local data store connected to the processor, a character generator responsive to processor control for generating a television signal output to an associated television receiver, a key pad or remote control for inputting information to the processor, and a power supply input. The terminal is coupled, via 2-way RF communications, to a central location, designated as the system manager, where the terminal is accessed by polling for monitoring and servicing terminal user requests. The interactive terminal has a local storage capacity for storing a number of character screen commands, accessed from a central data base at the system manager, for use in generating prompting screens displayed on the television receiver. In use, a user may call for a variety of services by operating the input keys of the key pad to cause a prompting screen to be displayed. Screen commands are stored at the terminal according to an assigned priority. The stored screen commands also include pointers which are used by the terminal processor to prefetch screens which will likely follow the current screen in a decision tree structure manner. Thus, screens may be prefetched from the central data base and downloaded for storage at the terminal so that they are available for display if and when called for. If a particular branch of a decision tree is not selected, screens associated with the unselected branch are deleted from terminal memory as needed to make room for mew screens. The terminal memory is also controlled so that data is swapped in and out of memory based on its relative priority.

Abstract translation: 交互式终端包括处理器，连接到处理器的本地数据存储器，响应于处理器控制以产生输出到相关电视接收机的电视信号的字符发生器，用于向处理器输入信息的键盘或遥控器，以及 电源输入 终端通过2路RF通信耦合到指定为系统管理器的中心位置，其中通过轮询来访问终端以监视和维护终端用户请求。 交互式终端具有用于存储从系统管理器的中央数据库访问的多个字符屏幕命令的本地存储容量，用于生成在电视接收机上显示的提示画面。 在使用中，用户可以通过操作键盘的输入键来呼叫各种服务，从而显示提示画面。 屏幕命令根据分配的优先级存储在终端。 存储的屏幕命令还包括由终端处理器用于预取可能以决策树结构方式跟随当前屏幕的屏幕的指针。 因此，屏幕可以从中央数据库预取并且被下载以用于在终端处存储，使得如果和当被呼叫时它们可用于显示。 如果未选择决策树的特定分支，则与未选择的分支相关联的屏幕将根据需要从终端内存中删除，以为mew屏幕腾出空间。 还控制终端存储器，以便基于其相对优先级将数据交换到存储器中。

公开(公告)号：WO1990006656A1

公开(公告)日：1990-06-14

申请号：PCT/US1989005357

申请日：1989-12-04

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  WEST, Lamar, E., Jr.

IPC: H04N07/167

CPC classification number: H04K3/825 ,  H04K3/42 ,  H04K3/43 ,  H04K2203/14 ,  H04N7/166

Abstract: An off-premises cable televison interdiction apparatus provides a microprocessor controller for controlling and switching one or more variable frequency voltage controlled oscillators. The variable frequency oscillators selectively jam only unauthorized premium programming transmitted on particular channels of a broadband signal in the clear from a headend to a subscriber. The microprocessor controller controls the variable frequency oscillators to hop between jamming frequencies and jam particular channels under control from the headend. A frequency calibration routine is executed periodically upon power-up to determine gain parameters for the oscillators. A heterodyned variable frequency oscillator may be provided for the interdiction system which moves the frequency of the variable frequency oscillator out of the television band and mixes the variable frequency oscillator output with a fixed local oscillator output to provide a jamming signal that falls in the television band. Gain control using a heterodyned oscillator may instead be provided for use in the interdiction system which uses one channel of the broadband signal as the jamming signal. Automatic gain control may also instead be provided for controlling the attenuation of a variable attenuator in accordance with a gain function determined by interpolation and previously stored in memory by a calibration routine executed periodically or upon power-up. The calibration routine may run concurrently with a frequency calibration routine for controlling the frequency of the jamming signal.

Abstract translation: 一个室外电缆电视拦截设备提供一个微处理器控制器，用于控制和切换一个或多个可变频率电压控制的振荡器。 可变频率振荡器选择性地阻止从头端到用户清楚地在宽带信号的特定信道上发送的未经授权的高级编程。 微处理器控制器控制可变频率振荡器在干扰频率之间跳转并阻塞来自头端的控制下的特定通道。 在上电时定期执行频率校准程序，以确定振荡器的增益参数。 可以为用于将可变频率振荡器的频率移出电视频带的阻塞系统提供外差变频振荡器，并将可变频率振荡器输出与固定本地振荡器输出混合，以提供落在电视频带中的干扰信号 。 可以替代地提供使用外差振荡器的增益控制用于使用宽带信号的一个信道作为干扰信号的截断系统。 还可以提供自动增益控制，以根据由内插确定的增益函数来控制可变衰减器的衰减，并且通过周期性执行或上电时执行的校准程序预先存储在存储器中。 校准程序可以与用于控制干扰信号的频率的频率校准例程同时运行。

公开(公告)号：WO1983002530A1

公开(公告)日：1983-07-21

申请号：PCT/US1983000020

申请日：1983-01-10

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  HUTCHINS, Samuel, F.

IPC: H01Q03/08

CPC classification number: H01Q3/08 ,  H01Q1/125

Abstract: Un appareil porteur verrouillable (20) permet la rotation d'organes adjacents (14, 22) tels que des parties d'une structure de montage d'une antenne, les organes adjacents définissant des brides portantes circulaires (22, 26) entourées et reçues par un accouplement (29) qui peut être serré ou desserré pour verrouiller ou libérer les organes adjacents. L'accouplement (29) comprend un organe annulaire définissant un évidement annulaire s'ouvrant vers l'intérieur pour recevoir les brides (22, 26), et les brides s'engagent entre elles et font un angle l'une par rapport à l'autre de sorte que l'accouplement engage les brides et les sollicite axialement l'une vers l'autre lorsque l'accouplement (29) est serré. Des moyens de stabilisation (39) pour maintenir l'orientation des organes adjacents pendant la rotation sont décrits, ainsi que des moyens (93) de rotation sélective des organes adjacents l'un par rapport à l'autre. Dans le mode préférentiel de réalisation permettant d'obtenir un axe d'azimut dans une structure de montage d'une antenne, des composants en feuille métallique peu coûteux sont reliés par l'appareil porteur matérialisé par l'invention.

公开(公告)号：WO1983002378A1

公开(公告)日：1983-07-07

申请号：PCT/US1982001759

申请日：1982-12-15

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  BANKER, Robert, O.

IPC: H04N07/16

CPC classification number: G06F11/1028 ,  H04N7/1713

Abstract: In order to provide higher efficiency of security in sync suppression scrambling of subscription TV signals, the signals are encoded with a timing pulse having a selected time delay relationship with the suppressed horizontal sync intervals of the TV signals. The timing can be implemented digitally by selecting a plurality (e.g., 12) of different timings. The timing can also be dynamically varied. The TV signals are descrambled by restoring the sync pulses at only those receiving stations authorized to receive the premium subscription programming which have circuits for generating restoring pulses with the selected time relationship upon reception of the timing signals. Accordingly, the use of unauthorized descramblers, which are insensitive to the timing signals or do not provide the restoring pulses in proper time relationship, is discouraged.

公开(公告)号：WO1998030003A1

公开(公告)日：1998-07-09

申请号：PCT/US1997024044

申请日：1997-12-22

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  DALY, William, G. ,  CAINE, Steven, L.

IPC: H04M01/00

CPC classification number: H04M3/005 ,  H04M19/02

Abstract: A communication loop using a subscriber line interface circuit (SLIC) (2) is modified such that it can operate in unbalanced ringing environments as well as balanced ringing environments. This is accomplished by grounding the tip lead of a telephone instrument (1) and creating an open circuit at the tip lead (3) of the SLIC (2). The ring lead of the telephone instrument (1) and the ring lead (4) of the SLIC (2) are electrically connected, and an AC voltage applied to the ring lead by the SLIC (2) is increased. A power supply (8) is connected to the SLIC (2) and biased to provide the increased AC voltage on the SLIC ring lead (4) while the average voltage on the SLIC tip lead (3) is maintained substantially at ground. The result of this circuitry is a trapezoidal signal meeting the amplitude, loading and crest factor requirements of Bellcore Technical Requirement Publications TA-NWT-000909 and TR-NWT-000057.

Abstract translation: 使用用户线接口电路（SLIC）（2）的通信环路被修改，使得其可以在不平衡振铃环境以及平衡振铃环境中操作。 这通过将电话仪器（1）的尖端引线接地并在SLIC（2）的尖端引线（3）处产生开路来实现。 电气设备（1）的环形引线和SLIC（2）的环形引线（4）电连接，并且由SLIC（2）施加到环形引线的AC电压增加。 电源（8）连接到SLIC（2），并被偏置以在SLIC环形引线（4）上提供增加的AC电压，同时SLIC尖端引线（3）上的平均电压基本保持在地。 该电路的结果是一个梯形信号，满足Bellcore技术要求出版物TA-NWT-000909和TR-NWT-000057的幅度，载荷和波峰因数要求。