公开(公告)号：US07657919B2

公开(公告)日：2010-02-02

申请号：US10821476

申请日：2004-04-09

Applicant: David B. Alsobrook ,  William E. Wall ,  William C. Versteeg ,  Ajith N. Nair

Inventor： David B. Alsobrook ,  William E. Wall ,  William C. Versteeg ,  Ajith N. Nair

IPC: H04N7/173

CPC classification number: H04N21/6168 ,  H04H20/69 ,  H04L5/02 ,  H04L12/2801 ,  H04L12/2856 ,  H04L12/2885 ,  H04L27/34 ,  H04N7/17336 ,  H04N21/2221 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/2393 ,  H04N21/437 ,  H04N21/4381 ,  H04N21/4382 ,  H04N21/6118

Abstract: Systems and methods are disclosed for receiving IP video and audio signals at a subscriber's premises. A QAM modulator then modulates the IP signals and provides the modulated signals to a conventional digital home communications terminal (DHCT). Accordingly, conventional DHCTs can be used in an IP-based network.

Abstract translation: 公开了用于在用户的房屋处接收IP视频和音频信号的系统和方法。 然后，QAM调制器调制IP信号并将调制信号提供给传统的数字家庭通信终端（DHCT）。 因此，传统的DHCT可以用于基于IP的网络中。

公开(公告)号：US07321728B2

公开(公告)日：2008-01-22

申请号：US11281437

申请日：2005-11-18

Applicant: James Harley ,  Lacra Pavel

Inventor： James Harley ,  Lacra Pavel

IPC: H04B10/08

CPC classification number: H04B10/07955 ,  H04B10/077 ,  H04J14/02 ,  H04J14/0298 ,  H04L5/02 ,  H04L27/10

Abstract: An optical signal occupying one or more wavelengths. An optical data signal on each wavelength is modulated with a respective overhead (dither) signal, resulting in a respective dithered optical signal. The amplitude of a particular overhead signal used to modulate the corresponding optical data signal is chosen so that the RMS value of the overhead signal in the dithered optical signal is proportional to the average intensity of the optical data signal. The instantaneous frequency of each overhead signal is time-varying and each possible frequency belongs to a distinct set of frequencies which are all harmonically related to a fundamental frequency. The distinctness of each set of frequencies allows each overhead signal to be uniquely isolated from an aggregate overhead signal. The harmonic relationship among the frequencies allows improved accuracy of RMS detection at a receiver as well as reduced computational complexity, as each possible frequency for each overhead signal can be made to fall at the center of one of the frequency bins of a single FFT of reasonable size performed at a receiver. Methods and systems for generating and detecting such signals are disclosed.

Abstract translation: 占据一个或多个波长的光信号。 每个波长上的光学数据信号用相应的开销（抖动）信号进行调制，产生相应的抖动光信号。 选择用于调制对应的光数据信号的特定开销信号的振幅，使得抖动光信号中的开销信号的RMS值与光数据信号的平均强度成比例。 每个开销信号的瞬时频率是时变的，并且每个可能的频率属于与基频谐波相关的一组不同的频率。 每组频率的独特性允许每个开销信号与聚合开销信号唯一隔离。 频率之间的谐波关系允许提高接收机RMS检测的精度以及降低的计算复杂度，因为每个开销信号的每个可能的频率可以被置于合理的单个FFT的频率仓之一的中心 在接收机上执行的大小。 公开了用于产生和检测这些信号的方法和系统。

公开(公告)号：US07212577B2

公开(公告)日：2007-05-01

申请号：US10490092

申请日：2002-03-20

Applicant: Igor Borisovich Dounaev ,  Leonid Alexeyevich Letounov

Inventor： Igor Borisovich Dounaev ,  Leonid Alexeyevich Letounov

IPC: H04L27/00

CPC classification number: H04L5/02

Abstract: A use of the invention permits to increase the transmission rate of existing communication lines or their capacity. The method is in that, at the transmitting side: a first and second analog signals are formed from a first and second sequences of digital information samples, the first analog signal being formed from a difference of values of digital information samples of the first sequence and values of digital information samples of the second sequence taken in points of digital information samples of the first sequence, and the second analog signal being formed from digital information samples of the second sequence taken in points of digital information samples of the second sequence, which are between the points of digital information samples of the first sequence, after which the first and second analog signals are summed, and the summary analog signal is transmitted to a communication line; and at the receiving side: the first sequence of digital information samples is restored by means of sampling the summary analog signal with a clock frequency, then the first sequence of digital information samples is converted to the analog signal of the first sequence using the predetermined sampling function, said analog signal of the first sequence is subtracted from the summary analog signal, and the second sequence of digital information samples is restored from the obtained difference analog signal.

Abstract translation: 本发明的使用允许增加现有通信线路的传输速率或其容量。 该方法是在发送侧：第一和第二模拟信号由第一和第二数字信息样本序列形成，第一模拟信号由第一序列的数字信息样本和 第二序列的数字信息样本的值以第一序列的数字信息样本的点取得，第二模拟信号由第二序列的数字信息样本的数字信息样本形成，第二序列的数字信息样本是第二序列的数字信息样本， 在第一序列的数字信息样本点之后，将第一和第二模拟信号相加，并将摘要模拟信号发送到通信线路; 并且在接收侧：通过以时钟频率对摘要模拟信号进行采样来恢复数字信息样本的第一序列，然后使用预定采样将第一序列的数字信息采样转换为第一序列的模拟信号 功能，从摘要模拟信号中减去第一序列的所述模拟信号，并且从获得的差分模拟信号中恢复第二数字信息样本序列。

公开(公告)号：US06985749B2

公开(公告)日：2006-01-10

申请号：US10168489

申请日：2000-12-20

Applicant: Rudolf Bannasch ,  Konstantin Kebkal

Inventor： Rudolf Bannasch ,  Konstantin Kebkal

IPC: H04B15/00

CPC classification number: H04B1/707 ,  H04B14/026 ,  H04B2001/6912 ,  H04L1/04 ,  H04L5/02 ,  H04L25/4902 ,  H04L27/10 ,  H04L27/32

Abstract: Methods and devices for sending, transmitting and/or receiving information by means of waves, in which an information signal of a carrier wave is impressed, whose frequency is continuously changed to form at least one carrier sweep in a predetermined time interval and in which the information signal is filtered to separate multipath components after being received in the frequency range or is cleaned of noise portions and then evaluated with respect to the information-bearing signal parameters.

公开(公告)号：US06934779B1

公开(公告)日：2005-08-23

申请号：US10420996

申请日：2003-04-21

Applicant: Michael Eugene Broach

Inventor： Michael Eugene Broach

IPC: G06F13/12 ,  H04L5/02

CPC classification number: H04L5/02

Abstract: An integrated circuit is configured to receive encoded digital data from a system controller over a single signal line. The system controller encodes the digital data into a singular analog quantity such as a voltage, a current, a sine wave frequency, a sine wave amplitude, a pulse train frequency, or a pulse train duty cycle. The encoded digital data is transmitted to the signal line. The integrated circuit decodes the digital data from the signal line. The decoded digital data is employed by the integrated circuit to adjust one or more parameters of the integrated circuit. In one example, one or more parameters may be adjusted to select various operating modes for the integrated circuit. The singular analog quantity encoding/decoding methodology may be extended to more than one signal line when desirable.

Abstract translation: 集成电路被配置为通过单个信号线从系统控制器接收编码的数字数据。 系统控制器将数字数据编码为单个模拟量，例如电压，电流，正弦波频率，正弦波幅度，脉冲序列频率或脉冲序列占空比。 编码的数字数据被发送到信号线。 集成电路从信号线解码数字数据。 解码的数字数据被集成电路采用以调整集成电路的一个或多个参数。 在一个示例中，可以调整一个或多个参数以选择集成电路的各种操作模式。 当需要时，单数模拟量编码/解码方法可以扩展到多于一条的信号线。

公开(公告)号：US20050069042A1

公开(公告)日：2005-03-31

申请号：US10490092

申请日：2002-03-20

Applicant: Igor Dounaev ,  Leonid Letounov

Inventor： Igor Dounaev ,  Leonid Letounov

IPC: H04L27/36 ,  H04L5/02 ,  H04L27/00

CPC classification number: H04L5/02

Abstract: A use of the invention permits to increase the transmission rate of existing communication lines or their capacity. The method is in that, at the transmitting side: a first and second analog signals are formed from a first and second sequences of digital information samples, the first analog signal being formed from a difference of values of digital information samples of the first sequence and values of digital information samples of the second sequence taken in points of digital information samples of the first sequence, and the second analog signal being formed from digital information samples of the second sequence taken in points of digital information samples of the second sequence, which are between the points of digital information samples of the first sequence, after which the first and second analog signals are summed, and the summary analog signal is transmitted to a communication line; and at the receiving side: the first sequence of digital information samples is restored by means of sampling the summary analog signal with a clock frequency, then the first sequence of digital information samples is converted to the analog signal of the first sequence using the predetermined sampling function, said analog signal of the first sequence is subtracted from the summary analog signal, and the second sequence of digital information samples is restored from the obtained difference analog signal.

Abstract translation: 本发明的使用允许增加现有通信线路的传输速率或其容量。 该方法是在发送侧：第一和第二模拟信号由第一和第二数字信息样本序列形成，第一模拟信号由第一序列的数字信息样本和 第二序列的数字信息样本的值以第一序列的数字信息样本的点取得，第二模拟信号由第二序列的数字信息样本的数字信息样本形成，第二序列的数字信息样本是第二序列的数字信息样本， 在第一序列的数字信息样本点之后，将第一和第二模拟信号相加，并将摘要模拟信号发送到通信线路; 并且在接收侧：通过以时钟频率对摘要模拟信号进行采样来恢复数字信息样本的第一序列，然后使用预定采样将第一序列的数字信息采样转换为第一序列的模拟信号 功能，从摘要模拟信号中减去第一序列的所述模拟信号，并且从获得的差分模拟信号中恢复第二数字信息样本序列。

公开(公告)号：US20050044576A1

公开(公告)日：2005-02-24

申请号：US10671151

申请日：2003-09-25

Applicant: William Wall ,  William Versteeg

Inventor： William Wall ,  William Versteeg

IPC: H04H1/00 ,  H04H20/69 ,  H04J11/00 ,  H04L5/02 ,  H04L12/28 ,  H04L27/34 ,  H04N7/173

CPC classification number: H04L5/02 ,  H04H20/69 ,  H04L12/2801 ,  H04L12/2856 ,  H04L12/2885 ,  H04L27/34

Abstract: Systems and methods are disclosed for providing reverse signals from a plurality of DHCTs to a downstream modulator that is located in the headend facility. The present invention includes a single wire return device (SWRD) that receives RF modulated signals, dynamically determines the address of the associated modulator, and converts the signals into Ethernet signals. The Ethernet signals are subsequently provided to the headend facility via fiber cable.

Abstract translation: 公开了用于从多个DHCT向位于头端设施中的下游调制器提供反向信号的系统和方法。 本发明包括接收RF调制信号的单线返回装置（SWRD），动态地确定相关调制器的地址，并将信号转换成以太网信号。 以太网信号随后通过光缆提供给头端设备。

公开(公告)号：US20040125889A1

公开(公告)日：2004-07-01

申请号：US10335553

申请日：2002-12-31

Inventor： Scott Cumeralto ,  Richard Devries ,  Gary Larson

IPC: H04L027/12

CPC classification number: H04B1/715 ,  H04B2001/71365 ,  H04L5/02 ,  H04L27/32 ,  H04W16/14

Abstract: The RF communications system of the present invention wirelessly communicates data without encountering undue interference problems with other devices and complies with rules governing unlicensed, spectrum-sharing devices. In an example embodiment, a transmitter device includes a digital subsystem powered by a power supply that processes data from another device and a radio frequency (RF) sub-system that transmits the processed data using a frequency hopping scheme. The RF sub-system includes a microprocessor arrangement that ON-OFF keys a voltage controlled oscillator (VCO) and provides a frequency-hopping scheme. The VCO is coupled to a signal frequency spreading arrangement that spreads the signal to a predetermined transmission bandwidth, wherein the frequency spreading occurs during an ON state of the ON-OFF keying and the transmission bandwidth exceeds a reception bandwidth at which the signal will be decoded.

Abstract translation: 本发明的RF通信系统无线地传送数据，而不会遇到与其他设备的不适当的干扰问题，并符合管理未许可的频谱共享设备的规则。 在示例性实施例中，发射机设备包括由处理来自另一设备的数据的电源供电的数字子系统和使用跳频方案发送所处理的数据的射频（RF）子系统。 RF子系统包括微处理器装置，ON-OFF键控压控振荡器（VCO）并提供跳频方案。 VCO耦合到将信号扩展到预定传输带宽的信号频率扩展布置，其中，在ON-OFF密钥的ON状态期间发生频率扩展，并且传输带宽超过了信号将被解码的接收带宽 。

公开(公告)号：US06654719B1

公开(公告)日：2003-11-25

申请号：US09525541

申请日：2000-03-14

Applicant: Constantinos B. Papadias

Inventor： Constantinos B. Papadias

IPC: G10L1520

CPC classification number: G06K9/6242 ,  H04L5/02 ,  H04L25/03331

Abstract: The present invention provides a method for blind separation of independent source signals. The preceding is accomplished by disclosing new techniques for dealing with the problem of blind separation of independent source signals. The method of the present invention consists of identifying a simple constrained criterion which stems directly from derived conditions for source separation. Using this criterion, observed and output signals are used to control a filtering matrix. After being initialized, the filtering matrix is updated and projected to the closest unitary matrix. Until the filtering matrix has converged, it continues to be updated and projected to the closest unitary matrix. Once convergence has occurred, the source signals have been recovered.

Abstract translation: 本发明提供了一种用于盲分离独立源信号的方法。 通过公开用于处理独立源信号的盲分离问题的新技术来实现上述功能。 本发明的方法包括确定直接源于源分离的衍生条件的简单约束标准。 使用该标准，观察和输出信号用于控制滤波矩阵。 初始化之后，滤波矩阵被更新并投影到最接近的单一矩阵。 在滤波矩阵收敛之前，它继续被更新并投影到最接近的单一矩阵。 一旦发生收敛，源信号就已被恢复。

公开(公告)号：US06618774B1

公开(公告)日：2003-09-09

申请号：US09527067

申请日：2000-03-16

Applicant: Adrian Christopher Dickens ,  Nigel Anthony Dickens ,  Philip Edward Hudson

Inventor： Adrian Christopher Dickens ,  Nigel Anthony Dickens ,  Philip Edward Hudson

IPC: G06F1312

CPC classification number: H04N7/108 ,  G06F13/385 ,  G09G5/006 ,  G09G2370/045 ,  H04L5/02 ,  H04N5/60 ,  H04N11/00 ,  H04N17/00

Abstract: A system for transmitting electrical signals between a computer and peripherals along a twisted pair cable. The system includes a computer interface, a peripheral interface and a twisted pair cable in communication between the computer interface and the peripheral interface. Video and audio signals from the computer are transmitted via the twisted pair cable to the peripherals. Peripheral signals can also be communicated between the computer and peripherals via the twisted pair cable.

Abstract translation: 一种用于沿着双绞线电缆在计算机和外围设备之间传输电信号的系统。 该系统包括在计算机接口和外围接口之间通信的计算机接口，外设接口和双绞线电缆。 来自计算机的视频和音频信号通过双绞线传输到外围设备。 外围信号也可以通过双绞线在计算机和外围设备之间通信。