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1. 发明授权

US4435619A Switching network interfacing telephone-exchange equipment with two-subscriber party line 失效
标题翻译：交换网络接口电话交换设备与双用户方线路
公开(公告)号：US4435619A
公开(公告)日：1984-03-06
申请号：US309479
申请日：1981-10-07
申请人： Ennio Bonaparte , Virgilio Mosca
发明人： Ennio Bonaparte , Virgilio Mosca
IPC分类号： H04Q5/24 , H04M3/14 , H04M3/16
CPC分类号： H04Q5/24
摘要： A line loop (a, b) serving two telephone subscribers with sets (U.sub.1, U.sub.2) each normally connected between ground and a respective line conductor, coupled at the exchange via a line transformer (T) to a voice path, includes a pair of line relays (RA, RB) respectively inserted in these conductors in series with two high-ohmic resistors (RR.sub.1 ', RR.sub.1 ") and two low-ohmic resistors (RR.sub.2 ', RR.sub.2 ") forming part of a switching network (CI) which interfaces the loop with call-control circuitry (CCT) at the exchange. Two selection relays (RE.sub.1, RE.sub.2) in the switching network normally connect the two line conductors to negative battery whereby an off-hook condition at one set, grounding the corresponding conductor, causes a current flow insufficient to operate the associated line relay but detectable by a line monitor (RI.sub.1, RI.sub.2) connected across the low-ohmic resistor thereof which generates an engagement signal (i.sub.1, i.sub.2) when that conductor is being addressed by a slow-rate scanning pulse (u.sub.1, u.sub.2). A resulting switchover of the exchange circuitry to fast-rate scanning energizes the respective selection relay and locks it operated to short-circuit the high-ohmic resistor, thereby actuating the corresponding line relay and disconnecting the other subscriber set from the loop. When the exchange detects a persisting off-hook condition in the absence of activity in an assigned time slot, it emits an isolating command (in) concurrently with the scanning pulse to set a flip-flop (FF.sub.1, FF.sub.2) causing the release of the selection relay.
摘要翻译：线路环路（a，b）为两个电话用户提供每个通常连接在地面和相应的线路导体之间的组（U1，U2），其经由线路变压器（T）耦合到语音路径，包括一对分别插入这些导体中的两个线路继电器（RA，RB）与两个高欧姆电阻（RR1'，RR1“）和两个形成交换网络（CI2）的一部分的低电阻（RR2'，RR2”）串联连接），其将该循环与呼叫控制电路（CCT）在交换机上接口。开关网络中的两个选择继电器（RE1，RE2）通常将两条线路导体连接到负电池，由此一个组件上的摘机状态使对应的导体接地，导致电流不足以操作相关的线路继电器，但可由连接在其低电阻电阻上的线路监视器（RI1，RI2），当通过慢速扫描脉冲（u1，u2）寻址该导体时，产生接合信号（i1，i2）。交换电路对快速扫描的最终切换为相应的选择继电器通电，并锁定其操作以使高欧姆电阻短路，由此致动相应的线路继电器并将另一个用户组与回路断开。当交换机在分配时隙中没有活动的情况下检测到持续摘机状态时，它与扫描脉冲同时发出一个隔离命令（in），以设置触发器（FF1，FF2），导致释放选择继电器。

2. 发明授权

US3609229A Apparatus for the high-speed transmission and reception of two-level images 失效
标题翻译：高速传输和接收两级图像的设备
公开(公告)号：US3609229A
公开(公告)日：1971-09-28
申请号：US3609229D
申请日：1968-10-21
申请人： VIRGILIO MOSCA , MARIA BONFA
发明人： MOSCA VIRGILIO , BONFA MARIA
IPC分类号： H04N3/32
CPC分类号： H04N3/32
摘要： This disclosure relates to an apparatus for the high-speed transmission and reception of two-level images in which a video signal is transmitted to a receiver and scanned in order to detect the presence of level transitions, the scanning point being stopped upon detection of a level transition for the time necessary to send an impulse to the receiver and then caused to continue its motion at high speed.

3. 发明授权

US4881226A Digital interface of an integrated subscriber line interface circuit 失效
标题翻译：集成用户线接口电路的数字接口
公开(公告)号：US4881226A
公开(公告)日：1989-11-14
申请号：US147429
申请日：1988-01-25
申请人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane , Marcello Manca , Virgilio Mosca , Antonio Nicastro
发明人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane , Marcello Manca , Virgilio Mosca , Antonio Nicastro
IPC分类号： H04Q3/42 , H04Q11/04
CPC分类号： H04Q11/0428
摘要： A digital interface of an integrated subscriber line interface circuit is provided. The interface serves for the connection of a signal processor unit. Individual connections are used as signal inputs in signal entry operation of the interface, and as signal outputs in signal transmission operation. Other connections are used as signal inputs in both operating mode, but receive different signals in each operating mode. One group of connections includes two registers with respective associated decoders to enable switching from one to the other, so that the number of operating instructions that can be represented by means of binary signal value combinations applied to the connections is doubled.
摘要翻译：提供了一种综合用户线接口电路的数字接口。该接口用于连接信号处理器单元。单个连接用作接口信号输入操作中的信号输入，并用作信号传输操作中的信号输出。其他连接用作两种工作模式下的信号输入，但在每种工作模式下都会接收不同的信号。一组连接包括两个具有各自相关联的解码器的寄存器，以使得能够从一个切换到另一个，使得可以通过应用于连接的二进制信号值组合来表示的操作指令的数量加倍。

4. 发明授权

US4007328A Videotelephone system with anti-crosstalk means 失效
标题翻译：具有抗串扰手段的视频电话系统
公开(公告)号：US4007328A
公开(公告)日：1977-02-08
申请号：US510757
申请日：1974-09-30
申请人： Virgilio Mosca
发明人： Virgilio Mosca
IPC分类号： H04N7/14 , H04N5/04
CPC分类号： H04N7/147
摘要： The outlying stations of a videotelephone system, adapted to communicate with one another through a central office, include each a video-reception section and a video-transmission section as well as an audio section provided with telephone equipment. A sync-pulse generator in the video-transmission section, comprising a crystal-controlled oscillator working into a pair of frequency dividers, controls the line-scan and frame-scan generators thereof as well as those of a remote station to which it is connected via an outgoing video line. A local sync-pulse extractor connected to an incoming video line controls the line-scan and frame-scan generators of the associated video-reception section. A switch enables replacement of the crystal-controlled oscillator with a variable-frequency oscillator locked in step with the sync-pulse generator of the remote station by the output of the local sync-pulse extractor whereby interference phenomena due to pick-up of incoming sync pulses, in random phase relationship with the locally generated sync pulses, are eliminated. The switchover to the variable-frequency oscillator may be carried out manually or, at a called station, by a detector circuit responsive to incoming audio or video signals, preferably to ringing current; the detector circuit includes a relay which locks for the duration of the established connection under the control of a hook switch.
摘要翻译：适于通过中心局彼此通信的视频电话系统的外围站包括视频接收部分和视频传输部分以及设置有电话设备的音频部分。在视频传输部分中的同步脉冲发生器包括一个工作在一对分频器中的晶体振荡的振荡器，它控制它的行扫描和帧扫描发生器以及与其连接的远程站的行扫描发生器通过输出视频线。连接到输入视频线的本地同步脉冲提取器控制相关视频接收部分的行扫描和帧扫描发生器。开关可通过本地同步脉冲提取器的输出将可变频率振荡器与远程站的同步脉冲发生器同步锁定，从而可以更换晶体振荡器，从而由于接收到的同步信号引起的干扰现象消除了与本地生成的同步脉冲的随机相位关系的脉冲。切换到可变频率振荡器可以手动地或在被叫站处被响应于输入的音频或视频信号的检测器电路执行，优选地进行振铃电流; 检测器电路包括在钩开关的控制下在建立的连接的持续时间内锁定的继电器。

5. 发明授权

US4893309A Digital interface between at least two subscriber line interface circuits and a processing unit 失效
标题翻译：至少两个用户线接口电路和处理单元之间的数字接口
公开(公告)号：US4893309A
公开(公告)日：1990-01-09
申请号：US147428
申请日：1988-01-25
申请人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Marcello Manca , Virgilio Mosca , Antonio Nicastro , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane
发明人： Robert Lechner , Hans-Werner Rudolf , Harald Stader , Norbert Wingerath , Christopher C. A. Priest , Nigel P. Dyer , Robert K. P. Galpin , Marcello Manca , Virgilio Mosca , Antonio Nicastro , Pierre Albouy , Robert Le Gougnec , Ramatchandirane Nadaradjane
IPC分类号： H04Q3/42 , H04Q11/04
CPC分类号： H04Q11/0428
摘要： A digital interface between at least two subscriber line interface circuits and a processing unit is described. The interface is configured in the form of a parallel interface. The level of an input/output register and of a control register is allocated, as needed, to the connections of the processing unit. These connections can be operated selectively as inputs or outputs. They can also be operated in two modes, depending upon which type of subscriber line interface circuit (SLIC) is connected. The connections of the last-mentioned units are partially operable as inputs or outputs and partially operable only as inputs but in the input case, selectively for various types of input signals.
摘要翻译：描述了至少两个用户线接口电路和处理单元之间的数字接口。该接口以并行接口的形式配置。根据需要，将输入/输出寄存器和控制寄存器的电平分配给处理单元的连接。这些连接可以选择性地作为输入或输出。它们也可以以两种模式运行，具体取决于用户线路接口电路（SLIC）的连接类型。最后提到的单元的连接部分地可操作为输入或输出，并且仅部分地可用作输入，但在输入情况下，可选择性地用于各种类型的输入信号。

6. 发明授权

US3939306A Videotelephone system with centralized synchronization control 失效
标题翻译：视频电话系统具有集中同步控制
公开(公告)号：US3939306A
公开(公告)日：1976-02-17
申请号：US478282
申请日：1974-06-11
申请人： Virgilio Mosca
发明人： Virgilio Mosca
IPC分类号： H04N7/14 , H04Q3/00 , H04N5/04
CPC分类号： H04Q3/0012 , H04N7/147
摘要： A central office of a videotelephone system has a cross-bar switch to establish connections between incoming and outgoing video lines terminating at the transmitters and receivers of the videotelephone sets of the several outlying stations. A central sync-pulse generator works into the incoming video lines to control the sweep circuits of the video receivers of stations to which connections have been established, each video receiver being linked with the associated video transmitter through a delay circuit which actuates the line-scan generators of the transmitter and of the receiver with a relative offset compensating for the transit time of the sync pulses between the central office and the station. The sync pulses are supplied to each incoming video line through an amplifier stage preceded by a shunt circuit including a transistor to which quenching pulses for grounding the line are periodically applied by the sync-pulse generator.
摘要翻译：视频电话系统的中心局具有交叉开关，用于建立终端在多个外围站的视频电话机的发射机和接收机之间的输入和输出视频线之间的连接。中央同步脉冲发生器工作在输入视频线路中，以控制已建立连接的站的视频接收器的扫描电路，每个视频接收器通过延迟电路与相关联的视频发射器链接，该延迟电路驱动线扫描发射机和接收机的发生器具有补偿中央局和车站之间的同步脉冲的通行时间的相对偏移量。同步脉冲通过放大器级提供给每个输入视频线，前级放大器级包括一个分流电路，该分流电路包括一晶体管，该同步脉冲发生器周期性施加用于接地线的淬灭脉冲。

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