公开(公告)号：US3959598A

公开(公告)日：1976-05-25

申请号：US460711

申请日：1974-04-15

Applicant: Daniel R. Asmussen ,  Ray Ma

Inventor： Daniel R. Asmussen ,  Ray Ma

IPC: H04M15/36 ,  H04Q3/00

CPC classification number: H04Q3/00 ,  H04M15/36

Abstract: A circuit for making existing automatic number identification (ANI) equipment in a telephone central office compatible with multifrequency tone telephone using tone-to-pulse converters. In a typical ANI system, the telephone of one party on a two-party line includes an identification circuit, such as a connection to ground, while the other telephone does not include such a connection. When one party initiates a call, the tone-to-pulse converter interrupts the direct line pair connection between the telephone and the central office, in order to convert the multifrequency tones generated by the telephone into corresponding pulses recognizable by the central office. During this period, a voltage comparator in the preferred embodiment of the identification forwarding circuit serves to detect the voltage condition of the line pair portion connected to the one telephone, which condition varies depending on the presence or absence of the connection to ground in the telephone. A controlled gate, responsive to the voltage comparator, in turn connects a similar identification circuit as in the telephone to the line pair portion connected to the central office in the event that the voltage comparator recognizes a first voltage condition, and isolates the similar identification circuit from the line pair portion connected to the central office when the voltage comparator recognizes a second voltage condition.

Abstract translation: 一种用于在与使用音调脉冲转换器的多频音调电话兼容的电话中心局中进行现有自动号码识别（ANI）设备的电路。 在典型的ANI系统中，双方线路上的一方的电话包括识别电路，例如与地的连接，而另一个电话不包括这样的连接。 当一方发起呼叫时，音调脉冲转换器中断电话和中心局之间的直接线对连接，以便将由电话产生的多频音调转换为可由中心局识别的相应脉冲。 在此期间，识别转发电路的优选实施例中的电压比较器用于检测连接到一个电话的线对部分的电压状况，该状况根据在电话中与地面的连接的存在或不存在而变化 。 在电压比较器识别出第一电压条件的情况下，响应于电压比较器的受控门依次将与电话中相似的识别电路连接到连接到中心局的线对部分，并且将相似的识别电路 当电压比较器识别到第二电压状态时，从连接到中心局的线对部分。

公开(公告)号：US5051723A

公开(公告)日：1991-09-24

申请号：US414701

申请日：1989-09-29

Applicant: George E. Long ,  Daniel R. Asmussen ,  Martin J. Kenney

Inventor： George E. Long ,  Daniel R. Asmussen ,  Martin J. Kenney

IPC: G08B13/14 ,  G08B13/16

CPC classification number: G08B13/1436 ,  G08B13/1672

Abstract: A self-contained theft and vandalism deterrent system for equipment security includes sensors (12) for detecting conditions to which an alarm (24, 26, 28, 50) is responsive. The analog signals from the sensors (12) are serially delivered by a multiplexer circuit (16) when they are then directed to a network (20) for conversion to digital signals. The digital signals are delivered to a micro processor (22) where the signals are evaluated to determine if an alarm condition exists. The sensing means (12) include sound and vibration detectors for monitoring the ambient envelope. The micro processor (22) includes built in reprogramming and comparator circuits for varying the level at which a given condition will trigger an alarm response.

Abstract translation: 用于设备安全的独立的盗窃和破坏威慑系统包括用于检测警报（24,26,28,50）响应的状况的传感器（12）。 当传感器（12）的模拟信号然后被引导到网络（20）以转换成数字信号时，来自传感器（12）的模拟信号被多路复用器电路（16）串行传送。 数字信号被传送到微处理器（22），其中评估信号以确定是否存在警报状况。 感测装置（12）包括用于监测环境信封的声音和振动检测器。 微处理器（22）包括内置重编程和比较器电路，用于改变给定条件将触发报警响应的电平。

公开(公告)号：US5682157A

公开(公告)日：1997-10-28

申请号：US962746

申请日：1992-10-19

Applicant: Daniel R. Asmussen ,  Michael D. Shride ,  James A. Sloate ,  Thomas P. Dillon

Inventor： Daniel R. Asmussen ,  Michael D. Shride ,  James A. Sloate ,  Thomas P. Dillon

IPC: H03M5/04 ,  H03M5/12 ,  H04L27/02

CPC classification number: H03M5/12 ,  H03M5/04 ,  H04L27/02

Abstract: Disclosed is a system for rapid, wireless communication of electrically-generated and detected, serial digital data signals via a plurality of infrared (or other compatible wireless medium) transceivers. Signals are communicated without electrical connection among computers, fax machines, computer peripheral equipment, or may be employed within self-contained communication, control data-acquisition, and/or display systems. The system operates at predetermined maximum data rates and sub-multiples thereof. The disclosed transceivers can be joined with additional circuits, to form an arrangement that operates as a wireless modem. In each arrangement, light is continuously modulated at either of two precise multiples of the predetermined maximum data rate, and is synchronized to transmitted-data transitions. Upon receipt of light-signals thus produced, the system's receiving transceiver synchronizes received-data electrical output signals to the received modulated light signals. Received light-modulation periods are measured and verified continuously within each data-state interval, minimizing data-delay times and transition-timing distortions in the system's electrical output signals.

Abstract translation: 公开了一种用于通过多个红外（或其他兼容的无线介质）收发器快速，无线地通信电气和检测的串行数字数据信号的系统。 信号在计算机，传真机，计算机外围设备之间没有电连接的情况下通信，或者可以在独立的通信，控制数据采集和/或显示系统中使用。 系统以预定的最大数据速率及其子倍数工作。 所公开的收发器可以与附加电路连接，以形成作为无线调制解调器工作的布置。 在每个布置中，光以预定最大数据速率的两个精确倍数中的任一个被连续调制，并且与发送数据转换同步。 在接收到如此产生的光信号时，系统的接收收发器将接收到的数据电输出信号同步到所接收的调制光信号。 在每个数据状态间隔内连续测量和验证接收到的光调制周期，最小化系统电气输出信号中的数据延迟时间和转换时序失真。