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31.发明授权
公开(公告)号：US3943454A
公开(公告)日：1976-03-09
申请号：US443569
申请日：1974-02-19
申请人： Lawrence E. Getgen
发明人： Lawrence E. Getgen
摘要： The present invention provides means for deriving a single frequency signal from logic signals A(t) and B(t) by first applying the logic signals to a combining arrangement, which includes logic circuits and can be built using only standard integrated circuit components, e.g., flip-flops, gates, and amplifiers. The output of the combining means is the sum and difference frequencies, in digital form, of the logic signals A(t) and B(t). The single frequency is selected from the frequencies present at the output of the combining means.
摘要翻译： 本发明提供了用于通过首先将逻辑信号施加到包括逻辑电路的组合装置来从逻辑信号A（t）和B（t）导出单个频率信号的装置，并且可以仅使用标准集成电路部件来构建，例如 ，触发器，门和放大器。 组合装置的输出是数字形式的逻辑信号A（t）和B（t）的和差和差频。 单个频率从组合装置的输出处存在的频率中选择。
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公开(公告)号：US3941249A
公开(公告)日：1976-03-02
申请号：US514164
申请日：1974-10-11
申请人： Michael H. Grunsten
发明人： Michael H. Grunsten
CPC分类号： B07C5/06
摘要： A sorting apparatus capable of dividing lightweight axial components according to length. A pair of discs are separated by a predetermined distance and tilted above the horizontal plane with the second lower disc containing a backstop positioned on its outside surface. The item to be sorted is positioned across the discs with its first end against the backstop. If the overall length allows it to span the separation distance thereby supported by the discs it will travel through the arc of the discs as they rotate. If the length of the items is less than the separation distance of the discs, the second end of the item will fall between the discs and the item will fall onto the deflector.
摘要翻译： 一种能够根据长度分割轻质轴向分量的分选装置。 一对光盘分开预定的距离并且在水平面上方倾斜，第二下盘包含位于其外表面上的反向挡板。 要分类的物品位于光盘两侧，其第一端与反作用拦截。 如果总长度允许它跨越由盘支撑的分隔距离，则它们在旋转时将通过盘的弧线行进。 如果物品的长度小于碟片的分隔距离，物品的第二端将落在盘之间，物品将落在挡板上。
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公开(公告)号：US3939311A
公开(公告)日：1976-02-17
申请号：US517137
申请日：1974-10-23
申请人： James W. Smith
发明人： James W. Smith
摘要： A subscribers telephone circuit that includes automatic muting of signals reproduced by a transducer contained within the subset, each time the telephone's handset is removed from its cradle. The circuit employs electronic techniques to eliminate the need for additional contacts on the hook switch to provide the necessary muting.
摘要翻译： 每个电话机的手机从其支架上移除的用户电话电路包括由包含在该子集内的换能器再现的信号的自动静音。 该电路使用电子技术来消除对钩开关上的附加触点的需要以提供必要的静音。
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公开(公告)号：US3937894A
公开(公告)日：1976-02-10
申请号：US434743
申请日：1974-01-18
CPC分类号： H04M15/04
摘要： An automatic toll ticketing system for use in a communication switching system includes an addressable scanner having common control apparatus controlled by the common control apparatus to effect the interrogation of a preselected group of scan points, associated with busy paths established through a switching network of the switching system, in accordance with address data supplied by the common control apparatus which identifies the busy paths.
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公开(公告)号：US3931470A
公开(公告)日：1976-01-06
申请号：US520507
申请日：1974-11-04
申请人： Joseph J. Zimmermann
发明人： Joseph J. Zimmermann
CPC分类号： H04M1/652
摘要： Apparatus in a remotely controlled telephone answering device providing an audio or voice message indicating the time elapsed or, alternatively, the amount of tape used in recording telephone messages. In one embodiment, the apparatus comprises a recording medium such as a magnetic tape having the positional information pre-recorded thereon in a first channel and having a second channel for recording telephone messages. A playback head having first and second magnetic transducers respectively aligned with the first and second channels is coupled to a playback amplifier through a head switching relay. The relay is remotely controlled to selectively couple the transducers, one at a time, to the playback amplifier for playing back the positional information and the recorded messages.
摘要翻译： 遥控电话应答设备中的设备提供指示经过的时间的音频或语音消息，或者替代地，在记录电话消息中使用的磁带的数量。 在一个实施例中，该装置包括诸如磁带的记录介质，其具有在第一通道中预先记录在其上的位置信息，并具有用于记录电话信息的第二通道。 具有分别与第一和第二通道对准的第一和第二磁性换能器的重放头通过头切换继电器耦合到重放放大器。 继电器被远程控制，以便将换能器一次一个地选择性地耦合到回放放大器，用于回放位置信息和记录的消息。
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36.外观设计
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公开(公告)号：US4275458A
公开(公告)日：1981-06-23
申请号：US103756
申请日：1979-12-14
申请人： M. Ibrahim Khera
发明人： M. Ibrahim Khera
CPC分类号： G06F13/26
摘要： An interrupt expander circuit provides for greatly enlarging the capacity of vectored interrupts in a microprocessor system. This circuit provides the capability for a very large number of peripheral devices to be connected to a microprocessor centeral processing unit via an interrupt structure while maintaining the same interface requirements between the interrupting peripheral devices and the microprocessor. This circuit provides a priority interrupt structure.
摘要翻译： 中断扩展器电路大大扩大了微处理器系统中矢量中断的容量。 该电路提供了通过中断结构将非常大量的外围设备连接到微处理器中央处理单元的能力，同时保持中断外围设备和微处理器之间的相同接口要求。 该电路提供优先中断结构。
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公开(公告)号：US4270028A
公开(公告)日：1981-05-26
申请号：US78330
申请日：1979-09-24
申请人： John S. Young
发明人： John S. Young
CPC分类号： H04M19/02
摘要： A digitally activated ringing circuit for use in conjunction with a central processing unit of an electronic telephone central office is connected between the central processing unit and a telephone subscriber via the central office switching network. The ringing circuit generates an analog signal representing a particular one of a plurality of possible ringing frequencies to be applied to the subscriber line. The instantaneous values of the ringing signal are approximated by information contained within a read only memory.
摘要翻译： 与电子电话中心局的中央处理单元结合使用的数字激活振铃电路经由中心局交换网络连接在中央处理单元和电话用户之间。 振铃电路产生表示要施加到用户线路的多个可能的振铃频率中的特定一个的模拟信号。 振铃信号的瞬时值由只读存储器中包含的信息近似。
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公开(公告)号：US4255625A
公开(公告)日：1981-03-10
申请号：US97082
申请日：1979-11-23
申请人： Richard A. Walton , John Mocko, Jr.
发明人： Richard A. Walton , John Mocko, Jr.
CPC分类号： H04M3/323
摘要： The present invention is a call processing monitor circuit for dynamically verifying the operation of a telephone switching center. This system provides for continuously testing a telephone switching center's ability to process telephone traffic. This is accomplished by placing telephone calls one at a time from various network inlets to various network outlets in the switching center. For the detection of a predetermined number of consecutive failures, an output alarm signal is generated by the system.
摘要翻译： 本发明是用于动态地验证电话交换中心的操作的呼叫处理监视电路。 该系统提供连续测试电话交换中心处理电话流量的能力。 这是通过将电话呼叫从各种网络入口一次一个地发送到交换中心的各个网络出口来实现的。 为了检测预定数量的连续故障，系统产生输出报警信号。
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公开(公告)号：US4255618A
公开(公告)日：1981-03-10
申请号：US30987
申请日：1979-04-18
申请人： Dean W. Danner , Gary J. Kiel
发明人： Dean W. Danner , Gary J. Kiel
摘要： A digital intercept recorder/announcer system for use in conjunction with a telephone central office. The system performs the function of recorded message announcement for messages such as wrong number, time or weather announcements. The system samples and digitizes audio input signals from local or remote audio sources. Sampled data is stored in sequential fashion in memory so that it may be read out of memory exactly as it was stored. Upon demand, these stored signals are retrieved from memory, reconverted to an analog form and coupled to a subscriber's line for audio transmission to the subscriber. Delta modulation techniques are employed in the system.
摘要翻译： 一种与电话中心局结合使用的数字式拦截录音机/播音员系统。 系统执行记录消息通知的功能，例如错误的号码，时间或天气公告等信息。 系统对来自本地或远程音频源的音频输入信号进行采样和数字化。 采样数据以顺序的方式存储在存储器中，使得其可以与其存储完全一样地从存储器中读出。 根据需要，这些存储的信号从存储器检索，重新转换为模拟形式并且耦合到订户的线路以用于向订户的音频传输。 在系统中采用增量调制技术。
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