公开(公告)号：US20030034842A1

公开(公告)日：2003-02-20

申请号：US10214091

申请日：2002-08-08

Applicant: Broadcom Corporation

Inventor： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC: H03F003/45

CPC classification number: H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

Abstract: Provided is a method and system for producing a drive signal for a current steering amplifier. An exemplary method comprises receiving a supply voltage signal and a differential input signal as a circuit input. A differential amplifier drive signal is produced in response to the received supply voltage signal, the received differential input signal, and the received differential control signal. The received differential input signal is adjusted to a value where magnitudes of negative and positive components of the differential control signal become equal to one another and are within a predetermined amount of a magnitude of the supply voltage signal.

公开(公告)号：US20040124919A1

公开(公告)日：2004-07-01

申请号：US10658837

申请日：2003-09-10

Applicant: Broadcom Corporation

Inventor： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC: H03F003/68

CPC classification number: H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

Abstract: Provided is a system for implementing gain control in an amplification module comprising a first stage amplifier having a number of first stage input and output ports. The first stage amplifier is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals. Also included are a number of second stage amplifiers, each having second stage input and output ports, the second stage input ports being respectively coupled to the first stage output ports and being configured to receive the number of output signals. A gain control device is coupled to at least one from the group including the first stage input ports, the first stage output ports, and the second stage output ports. The gain control device is also configured to control a gain of at least one of the first stage amplifier and one or more of the number of second stage amplifiers.

Abstract translation: 提供了一种用于在放大模块中实现增益控制的系统，其包括具有多个第一级输入和输出端口的第一级放大器。 第一级放大器被配置为向接收的输入信号提供第一级放大，并且从放大的输入信号产生多个输出信号。 还包括多个第二级放大器，每个具有第二级输入和输出端口，第二级输入端口分别耦合到第一级输出端口并且被配置为接收多个输出信号。 增益控制装置耦合到包括第一级输入端口，第一级输出端口和第二级输出端口的组中的至少一个。 增益控制装置还被配置为控制第一级放大器和多个第二级放大器中的至少一个的增益。

公开(公告)号：US20040017830A1

公开(公告)日：2004-01-29

申请号：US10420805

申请日：2003-04-23

Applicant: Broadcom Corporation

Inventor： Mark Dale ,  David Hartman ,  Dorothy Lin ,  Rocco Brescia ,  Alan Gin ,  Ravi Bhaskaran ,  Jen-chieh Chien ,  Adel Fanous

IPC: H04J003/16

CPC classification number: H04W28/18 ,  H04B7/18582 ,  H04W4/06 ,  H04W48/08 ,  H04W84/06

Abstract: A method, apparatus and computer program product for generating and processing upstream channel descriptor (UCD) messages in a DOCSIS-based broadband communications system, such as a DOCSIS-based two-way satellite communications system, is provided. A satellite modem termination system (SMTS) generates a UCD message that includes one or more standard parameters pertaining to an upstream channel of the two-way satellite communications system, wherein the one or more standard parameters are defined in accordance with the DOCSIS protocol, and one or more satellite application-specific parameters pertaining to the upstream channel, wherein the one or more satellite application specific parameters are not provided for by the DOCSIS protocol. The UCD message is transmitted to a satellite modem that extracts both the standard and satellite application-specific parameters for use in managing communication over the upstream channel.

Abstract translation: 提供了一种用于在基于DOCSIS的宽带通信系统（例如基于DOCSIS的双向卫星通信系统）中生成和处理上行信道描述符（UCD）消息的方法，装置和计算机程序产品。 卫星调制解调器终端系统（SMTS）生成包括与双向卫星通信系统的上行信道相关的一个或多个标准参数的UCD消息，其中一个或多个标准参数根据DOCSIS协议来定义，以及 与上游信道相关的一个或多个卫星应用特定参数，其中DOCSIS协议不提供一个或多个卫星应用特定参数。 UCD消息被发送到卫星调制解调器，其提取用于管理在上行信道上的通信的标准和卫星专用参数。

公开(公告)号：US20040021508A1

公开(公告)日：2004-02-05

申请号：US10630870

申请日：2003-07-31

Applicant: Broadcom Corporation

Inventor： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC: G06G007/26

CPC classification number: H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

Abstract: A system is provided for activating gain stages in an amplification module. The system includes an amplification module including a first group of amplifiers. Inverting output ports of each of the first group of amplifiers are coupled to a module inverting output terminal, and non-inverting output ports are coupled to a module non-inverting output terminal. A divider network is provided and is coupled to the input ports of the first group of amplifiers. A second group of amplifiers is also provided. Each amplifier of the second group corresponds to one of the amplifiers in the first group, has an inverting input port coupled to the second module inverting input terminal and to output ports of the divider network, and a non-inverting input port coupled to the second non-inverting input terminal. The inverting output ports of the second group of amplifiers are coupled to the inverting output terminal and non-inverting output ports of the second group of amplifiers are coupled to the non-inverting output terminal.

公开(公告)号：US20030199248A1

公开(公告)日：2003-10-23

申请号：US10420909

申请日：2003-04-23

Applicant: Broadcom Corporation

Inventor： Mark Dale ,  David Hartman ,  Dorothy Lin ,  Rocco Brescia ,  Alan Gin ,  Ravi Bhaskaran ,  Jen-chieh Chien ,  Adel Fanous

IPC: H04B007/185

CPC classification number: H04B7/18523

Abstract: Satellite communications are carried out using the Data Over Cable Interface Specification (DOCSIS). Satellite modems are notified of upstream channel congestion by inserting a congestion notification message in a medium access protocol (MAP) message for the upstream channel. Specifically, the congestion notification message is inserted in an unused field of the MAP message, such as the explicit congestion notification (ECN) field. The MAP message can also carry other characteristics of the upstream channel, including priority threshold, multicast access burst availability, and available bandwidth.

公开(公告)号：US20030034838A1

公开(公告)日：2003-02-20

申请号：US10214327

申请日：2002-08-08

Applicant: Broadcom Corporation

Inventor： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC: H03G003/20

CPC classification number: H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

Abstract: Provided is a system for implementing gain control in an amplification module comprising a first stage amplifier having a number of first stage input and output ports. The first stage amplifier is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals. Also included are a number of second stage amplifiers, each having second stage input and output ports, the second stage input ports being respectively coupled to the first stage output ports and being configured to receive the number of output signals. A gain control device is coupled to at least one from the group including the first stage input ports, the first stage output ports, and the second stage output ports. The gain control device is also configured to control a gain of at least one of the first stage amplifier and one or more of the number of second stage amplifiers.

Abstract translation: 提供了一种用于在放大模块中实现增益控制的系统，其包括具有多个第一级输入和输出端口的第一级放大器。 第一级放大器被配置为向接收到的输入信号提供第一级放大，并且从放大的输入信号产生多个输出信号。 还包括多个第二级放大器，每个具有第二级输入和输出端口，第二级输入端口分别耦合到第一级输出端口并且被配置为接收多个输出信号。 增益控制装置耦合到包括第一级输入端口，第一级输出端口和第二级输出端口的组中的至少一个。 增益控制装置还被配置为控制第一级放大器和多个第二级放大器中的至少一个的增益。

公开(公告)号：US20030035070A1

公开(公告)日：2003-02-20

申请号：US10214097

申请日：2002-08-08

Applicant: Broadcom Corporation

Inventor： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC: H04N005/52 ,  H04N005/14 ,  H04N009/64

CPC classification number: H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

Abstract: An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals, each substantially matching the input signal. Also included is a first gain control device having a number of gain input ports respectively coupled to the first output ports and a gain output port coupled to at least one of the first input ports. The first gain control device is configured to control a gain of the first amplification module. Next, a number of second amplification modules corresponding to the number of output signals has a number of second input ports respectively coupled to the first output ports. Each second amplification module is configured to receive a control signal from the second gain control device, provide second stage amplification to a corresponding one of the number of output signals based upon the control signal and produce an amplified output signal.