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1. 发明授权

US06788331B1 Videofax system with progressive image display 失效
标题翻译：具有逐行图像显示的Videofax系统
公开(公告)号：US06788331B1
公开(公告)日：2004-09-07
申请号：US09630176
申请日：2000-08-01
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H04N714
CPC分类号： H04N21/45455 , H04N7/17318 , H04N21/4316 , H04N21/44016 , H04N21/4532 , H04N21/47202 , H04N21/4722 , H04N21/4755 , H04N21/6175 , H04N21/8586
摘要： An improved videofax system for displaying a video image from a digital memory, while the digital memory is being updated with data representing a new image and received from a standard telephone line or other communication channel with relatively slow data access time. A video processor circuit uses a first digital counter to increment the address of a digital memory sequentially and load the stored data to a digital-to-analog converter for display of the resulting analog composite signal on a standard monitor. The video processor uses the address provided by a second digital counter to temporarily switch the digital memory address provided by the first counter and sequentially update the digital memory with new data received from a modem, a microcontroller, or any other data storage components with slow access time, enabling a user to view the new image as it overwrites the old image with a sense of continuity between the old image and the new image.
摘要翻译：一种用于从数字存储器显示视频图像的改进的视频帧系统，而数字存储器正在用表示新图像的数据进行更新，并且从具有相对慢的数据访问时间的标准电话线路或其他通信信道接收。视频处理器电路使用第一数字计数器来顺序地增加数字存储器的地址，并将存储的数据加载到数模转换器，以在标准监视器上显示所得模拟复合信号。视频处理器使用由第二数字计数器提供的地址临时切换由第一计数器提供的数字存储器地址，并且使用从调制解调器，微控制器或具有缓慢存取的任何其它数据存储组件接收的新数据来顺序更新数字存储器时间，使得用户可以在旧图像和新图像之间具有连续感的方式覆盖旧图像来查看新图像。

2. 发明授权

US5699421A Telephone answering device with low cost dual tone multi-frequency detector 失效
标题翻译：具有低成本双音多频检测器的电话应答设备
公开(公告)号：US5699421A
公开(公告)日：1997-12-16
申请号：US455226
申请日：1995-05-31
申请人： Alex Nirshberg , Mark J. Karnowski , Frank Sacca
发明人： Alex Nirshberg , Mark J. Karnowski , Frank Sacca
IPC分类号： H04M1/652 , H04M1/654 , H04M3/533 , H04Q1/453 , H04M1/00 , G06F17/10 , G08C19/00 , H04M3/00
CPC分类号： H04M3/533 , H04M1/652 , H04M1/654 , H04Q1/453
摘要： A telephone answering device (TAD) includes a remote access mode which is operative responsive to dual tone multi-frequency (DTMF) signals. At least three bandpass filters each receive an input signal from a telephone line interface provided in the TAD. A software controlled sampling section receives outputs from all the bandpass filters for sampling outputs from the bandpass filters, the sampling section including a multiplexer which receives the outputs from all of the bandpass filters, and a peak hold circuit coupled to an output of the multiplexer. An analog-to-digital converter receives an output from the peak hold circuit, and a digital controller receives the output of the analog-to-digital converter for controlling operations of the TAD in a remote access mode responsive to the detected DTMF signals. First and second ones of the bandpass filters have respective center frequencies corresponding to frequencies of respective DTMF signals and a third bandpass filter has a different center frequency. The absence of an output from the third filter confirms that there is no noise or other undesirable signals that would indicate that an incoming signal is not a DTMF signal. At least one of the bandpass filters preferably is a switched capacitor filter having a center frequency which is switchable between at least two different center frequencies. At least the bandpass filters, multiplexer, peak hold circuit and analog-to-digital converter are all included in a single application specific integrated circuit (ASIC).
摘要翻译：电话应答设备（TAD）包括响应于双音多频（DTMF）信号的操作的远程接入模式。至少三个带通滤波器各自从TAD中提供的电话线接口接收输入信号。软件控制采样部分接收来自所有带通滤波器的输出，用于对带通滤波器的输出进行采样，采样部分包括接收所有带通滤波器的输出的多路复用器和耦合到多路复用器的输出的峰值保持电路。模数转换器接收来自峰值保持电路的输出，并且数字控制器接收模数转换器的输出，用于响应于检测到的DTMF信号在远程访问模式中控制TAD的操作。带通滤波器的第一和第二滤波器具有对应于相应DTMF信号的频率的各自的中心频率，并且第三带通滤波器具有不同的中心频率。没有来自第三滤波器的输出确认没有噪声或其它不期望的信号，这些信号将表示输入信号不是DTMF信号。至少一个带通滤波器优选地是具有可在至少两个不同中心频率之间切换的中心频率的开关电容滤波器。至少带通滤波器，多路复用器，峰值保持电路和模数转换器都包含在单个专用集成电路（ASIC）中。

3. 发明授权

US06529598B1 Method and apparatus for digital PABX detection and modem interface protection 失效
标题翻译：用于数字PABX检测和调制解调器接口保护的方法和装置
公开(公告)号：US06529598B1
公开(公告)日：2003-03-04
申请号：US09312178
申请日：1999-05-14
申请人： Frank Sacca , Alberto Mantovani , James Bunde Villadsen Skov
发明人： Frank Sacca , Alberto Mantovani , James Bunde Villadsen Skov
IPC分类号： H04M1100
CPC分类号： H04M11/06
摘要： The line interface circuit of a modem to be connected to a standard RJ11 jack of a digital PBX (Private Branch Exchange) is used along with software routines resident in the modem to detect the presence of a PBX connected to the modem. Upon going off-hook, the modem, by the software routines, determines whether the connection will harm the interface by one of several software routines. If it appears that the interface circuit may be damaged because a PBX line is present, the modem is instructed to go on-hook (hang up), or if the connection is not harmful to the interface, alerts the user that the modem is connected to a wrong jack.
摘要翻译：要连接到数字PBX（专用交换机）的标准RJ11插孔的调制解调器的线路接口电路与驻留在调制解调器中的软件例程一起使用，以检测连接到调制解调器的集团电话的存在。摘机时，调制解调器通过软件程序确定连接是否会通过几个软件例程之一对接口造成伤害。如果看起来接口电路可能因为PBX线路而被损坏，则指示调制解调器进行挂机（挂断），或者如果连接对接口无害，则向用户通知调制解调器已连接一个错误的杰克。

4. 发明授权

US06380967B1 System to capture, store, and retrieve composite video for transmission over telephone lines 失效
标题翻译：用于捕获，存储和检索复合视频以便通过电话线传输的系统
公开(公告)号：US06380967B1
公开(公告)日：2002-04-30
申请号：US08762884
申请日：1996-12-07
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H04N714
CPC分类号： H04N7/141
摘要： A simple, low-cost videophone system for transmitting and receiving still video images over a standard telephone line in response to a user command. A video processor circuit, comprising an A/D converter, a digital memory, a digital timing circuit, and a D/A converter, can grab a video image from a standard video camera and store one-half the number of lines of a video frame in the digital memory. A still video image can be displayed in a standard TV monitor by repeatedly sending the data stored in the digital memory to the D/A converter. The data stored in the digital memory can be transmitted using a standard modem to the digital memory of an equivalent system at a remote location, and the same still video image can be displayed at the remote location within a short time. Data compression is accomplished during transmission by decreasing the number of significant bits of the data being transmitted and using standard protocols adopted by the modem. Voice communication on the telephone line is temporarily suspended while data is transmitted, and automatically resumed when transmission is complete.
摘要翻译：一种简单，低成本的视频电话系统，用于响应于用户命令，通过标准电话线路发送和接收静态视频图像。包括A / D转换器，数字存储器，数字定时电路和D / A转换器的视频处理器电路可以抓取来自标准摄像机的视频图像并存储视频数量的一半帧在数字存储器中。通过将存储在数字存储器中的数据重复发送到D / A转换器，可以在标准TV监视器中显示静止视频图像。存储在数字存储器中的数据可以使用标准调制解调器发送到远程位置的等效系统的数字存储器，并且可以在短时间内在远程位置显示相同的静止视频图像。数据压缩在传输过程中通过减少正在发送的数据的有效位的数量并使用调制解调器采用的标准协议来完成。数据传输时，电话线上的语音通话暂时中止，传输完成后自动恢复。

5. 发明授权

US07031462B2 Electronic inductor with transmit signal telephone line driver 失效
标题翻译：电子电感带有发射信号电话线驱动器
公开(公告)号：US07031462B2
公开(公告)日：2006-04-18
申请号：US10600491
申请日：2003-06-20
申请人： Frank Sacca , Raphael Rahamim
发明人： Frank Sacca , Raphael Rahamim
IPC分类号： H04M1/76 , H04M1/738
CPC分类号： H04L25/028 , H03H11/42 , H03H11/485 , H04L25/0266 , H04L25/0278 , H04L27/0002 , H04M11/06
摘要： In an electronic inductor circuit, an operational amplifier drives the base of the electronic inductor transistor, and receives negative feedback from the emitter of the transistor. The transistor and operational amplifier combine to form a voltage-controlled, current source (VCCS) with respect to the loop current. A voltage divider connected across the rectified Tip and Ring voltage (or another node of the circuit at an equivalent voltage) provides a DC reference to the positive input of the operational amplifier, so that the line current automatically increases with an increase in line voltage. A capacitor couples the transmit signal driver to the positive input of the operational amplifier. This electronic inductor circuit can be driven using a low voltage supply and provides sufficient linearity for high-speed modem applications.
摘要翻译：在电子电感器电路中，运算放大器驱动电子电感晶体管的基极，并从晶体管的发射极接收负反馈。晶体管和运算放大器组合形成相对于回路电流的电压控制的电流源（VCCS）。在整流的尖端和环形电压（或等效电压的电路的另一个节点）之间连接的分压器为运算放大器的正输入端提供直流参考，从而线路电流随着线路电压的增加而自动增加。电容器将发射信号驱动器耦合到运算放大器的正输入端。该电子电感器电路可以使用低电压电源驱动，并为高速调制解调器应用提供足够的线性度。

6. 发明授权

US06647114B1 Telephone line interface circuit with virtual impedance 有权
标题翻译：具有虚拟阻抗的电话线路接口电路
公开(公告)号：US06647114B1
公开(公告)日：2003-11-11
申请号：US09312218
申请日：1999-05-14
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H04M176
CPC分类号： H04M1/76
摘要： Using a telephone line interface circuit with negative feedback, it is possible to control the current through the circuit so that the ratio of the voltage applied across the circuit to the current is the desired value of impedance. Voltage feedback from the line controls the current through the circuit, thereby reflecting a “virtual” impedance to the telephone line. By adequately filtering the voltage feedback, the reflected impedance to the line can be adjusted to any desired impedance function, without using the actual values of the impedance. The circuit is thus ideally suited for applications in which the impedance values need to be varied depending upon the characteristics of the telephone system.
摘要翻译：使用具有负反馈的电话线接口电路，可以控制通过电路的电流，使得电路上施加的电压与电流的比值是期望的阻抗值。来自线路的电压反馈控制电流通过电路，从而反映电话线路的“虚拟”阻抗。通过充分过滤电压反馈，可以将线路的反射阻抗调整到任何所需的阻抗函数，而不使用阻抗的实际值。因此，该电路非常适用于阻抗值需要根据电话系统的特性而变化的应用。

7. 发明授权

US06373377B1 Power supply with digital data coupling for power-line networking 有权
标题翻译：电源与数字数据耦合用于电力线网络
公开(公告)号：US06373377B1
公开(公告)日：2002-04-16
申请号：US09679414
申请日：2000-10-05
申请人： Frank Sacca , Alberto Mantovani
发明人： Frank Sacca , Alberto Mantovani
IPC分类号： H04M1104
CPC分类号： H04B3/54 , H04B2203/5445 , H04B2203/547
摘要： A power supply provides digital data coupling for power-line networking. The power supply includes a power supply side digital interface to transmit and receive a digital data passed through a digital coupler to and from a power-line network access circuitry side digital interface of power-line network access circuitry. The power supply further includes a digital-to-analog converter to process digital data into a high-frequency analog data carrier to provide to a power line of a power-line network. An analog-to-digital converter of the power supply converts a high-frequency analog data carrier from the power line into digital data for the power-line network access circuitry. A power-line analog front end of the power supply transmits and receives the high-frequency analog data carrier to and from the power line. Digital data exchanged between the power supply and the network access circuitry may include control signals for a control circuitry of the power supply. Control circuitry of the power supply may handle control of the digital-to-analog converter, the analog-to-digital converter and the analog front end.
摘要翻译：电源为电力线网络提供数字数据耦合。电源包括电源侧数字接口，用于发送和接收通过数字耦合器传送到电力线网络接入电路的电力线网络接入电路侧数字接口的数字数据。电源还包括数模转换器，用于将数字数据处理成高频模拟数据载体以提供给电力线网络的电力线。电源的模拟 - 数字转换器将来自电力线的高频模拟数据载体转换成用于电力线路网络接入电路的数字数据。电源的电源模拟前端向电力线发送和接收高频模拟数据载体。在电源和网络接入电路之间交换的数字数据可以包括用于电源的控制电路的控制信号。电源的控制电路可以处理数模转换器，模数转换器和模拟前端的控制。

8. 发明授权

US5680075A Digital automatic gain control 失效
标题翻译：数字自动增益控制
公开(公告)号：US5680075A
公开(公告)日：1997-10-21
申请号：US455246
申请日：1995-05-31
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H03G3/00 , H03G3/30
CPC分类号： H03G3/001
摘要： A digital automatic gain control system includes an envelope detector coupled to a system input for converting an AC input signal into a DC output signal. An analog-to-digital converter has an input coupled to receive the output signal of the envelope detector and an output coupled to a digital register controlled by a digital control circuit. A programmable gain amplifier has control inputs coupled to receive an output of the digital register for controlling the gain of the programmable gain amplifier such that the signal level at a system output of the programmable gain amplifier remains substantially constant as the signal level at the system input varies within a specified dynamic range.
摘要翻译：数字自动增益控制系统包括耦合到系统输入的包络检测器，用于将AC输入信号转换成DC输出信号。模数转换器具有耦合以接收包络检测器的输出信号的输入和耦合到由数字控制电路控制的数字寄存器的输出。可编程增益放大器具有耦合以接收数字寄存器的输出的控制输入，用于控制可编程增益放大器的增益，使得可编程增益放大器的系统输出处的信号电平基本上保持恒定，因为系统输入端的信号电平在指定的动态范围内变化。

9. 发明授权

US06876742B1 High-voltage protection circuitry in a data access arrangement 有权
标题翻译：数据存取装置中的高压保护电路
公开(公告)号：US06876742B1
公开(公告)日：2005-04-05
申请号：US09676742
申请日：2000-09-29
申请人： Frank Sacca
发明人： Frank Sacca
IPC分类号： H04M1/57 , H04M1/738 , H04M1/74 , H04M1/00 , H04M9/00 , H04M9/08
CPC分类号： H04M1/745 , H04M1/573 , H04M1/7385
摘要： A data access arrangement (DAA) having improved surge protection. The DAA incorporates a high voltage clamping device functioning to protect line side circuitry from signal paths created by EMI capacitors. In one embodiment of the invention, EMI capacitors are added between the “plus” and “minus” terminals of the diode bridge of the DAA to balance and reduce noise injection onto the TIP and RING lines. These EMI capacitors also reduce EMI interference. However, by adding EMI capacitors on this side (the “rectified side” or “line side”) of the diode bridge, a high voltage signal path to earth ground is created that may have deleterious effects on the line side circuitry. To effectively negate undesirable signal paths through the EMI capacitors, the DAA includes a high voltage clamping device (e.g., a MOV, SIDACTor™, gas discharge tube or similar device) disposed between the plus and minus terminals of the diode bridge for suppressing high voltage spikes. The high voltage clamping device limits the voltage seen by the line side circuitry as a result of high voltage longitudinal surges by providing a current path from the plus terminal to the minus terminal of the diode bridge, thereby effectively bypassing the line side circuitry. The present invention recognizes and takes advantage of the fact that the diodes of a typical diode bridge are capable of withstanding the peak currents associated with most voltage surges.
摘要翻译：具有改善的浪涌保护的数据访问装置（DAA）。 DAA集成了一个高压钳位装置，用于保护线路侧电路不受EMI电容器产生的信号路径的影响。在本发明的一个实施例中，在DAA的二极管桥的“正”和“负”端之间增加了EMI电容器，以平衡和减少对TIP和RING线路的噪声注入。这些EMI电容器还可以降低EMI干扰。然而，通过在二极管电桥的这一侧（“整流侧”或“线路侧”）上添加EMI电容器，产生了对接地的高电压信号路径，这可能对线路侧电路产生有害影响。为了有效地消除通过EMI电容器的不期望的信号路径，DAA包括设置在二极管桥的正负端之间的高压钳位装置（例如，MOV，SIDACTor TM，气体放电管或类似装置），用于抑制高电压尖峰。高电压钳位装置通过提供从二极管桥的正极端子到负端子的电流路径来限制由于高压纵向浪涌而由线路侧电路所看到的电压，从而有效地绕过线路侧电路。本发明识别和利用了典型二极管电桥的二极管能够承受与大多数电压浪涌相关的峰值电流的事实。

10. 发明授权

US06741162B1 Power line networking apparatus and method 有权
标题翻译：电力线网络设备及方法
公开(公告)号：US06741162B1
公开(公告)日：2004-05-25
申请号：US09678983
申请日：2000-10-04
申请人： Frank Sacca , Alberto Mantovani
发明人： Frank Sacca , Alberto Mantovani
IPC分类号： H04M1104
CPC分类号： H04B3/56 , H04B2203/5425 , H04B2203/5445 , H04B2203/5483 , H04B2203/5491
摘要： An apparatus for carrying electrical data signals and electrical power over a power line is disclosed. The apparatus includes a data processing device, a power supply, and a data signal transceiver. The apparatus also includes an interference filter coupled to the power line and to the power supply and configured to reject electromagnetic interference. A coupling circuit that is electromagnetically coupled to the power line is also disclosed. The coupling circuit is configured to transmit and receive data signals carried through the power line. The coupling circuit is coupled to the data signal transceiver. The data signal transceiver is configured to transmit and receive the data signals to and from the data processing device.
摘要翻译：公开了一种通过电力线承载电气数据信号和电力的装置。该装置包括数据处理装置，电源和数据信号收发器。该装置还包括耦合到电力线和电源并被配置为抑制电磁干扰的干扰滤波器。还公开了电磁耦合到电力线的耦合电路。耦合电路被配置为发送和接收通过电力线承载的数据信号。耦合电路耦合到数据信号收发器。数据信号收发器被配置为向数据处理装置发送数据信号并从数据处理装置接收数据信号。

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