Mark N Berman

RE37826, Sep 3, 2002

Feb 18, 1999

09/252551

Henry Samueli - San Juan Capistrano CA
Mark Berman - Tustin CA
Fang Lu - Irvine CA

Broadcom Corporation - Irvine CA

H03H 730

370402, 370447, 375231, 375345, 375356

Four (4) unshielded twisted pairs of wires connect a hub and a computer in an Ethernet system: one (1) pair for transmission only, another for reception only and the other two (2) for transmission and reception. The signals in the wires are in packets each having timing signals defining a preamble and thereafter having digital signals representing information as by individual ones of three (3) amplitude levels. The signals received at the computer are provided with an automatic gain control (AGC) and then with digital conversions at a particular rate. A control loop operative upon the digital conversions regulates the AGC gain at a particular value. An equalizer operative only during the occurrence of the digital signals in each packet selects an individual one of the three (3) amplitude levels closest to the amplitude of each digital conversion at the time assumed to constitute the conversion peak. The amplitudes of the timing signals in each preamble at the times assumed to constitute the peaks and zero crossings of such signals are multiplied. The rate of such digital conversions is adjusted in accordance with the polarity and magnitude of the multiplication product.

7127624, Oct 24, 2006

Aug 13, 2001

09/928622

Mark Berman - Newport Coast CA, US
Richard Glen Thousand - Irvine CA, US

Broadcom Corporation - Irvine CA

G06F 5/06
G06F 1/12

713320, 713321, 713322, 713323, 713324, 370241, 370245, 370252

Energy detect with auto pair select. The present invention is operable without ‘a priori’ knowledge of the pairs' connectivity. In addition, the present invention is operable within systems performing automatic detection of connectivity in systems that employ the Ethernet based media dependent interface crossover (MDIX). Where there has been some cross-over of pairs within the system, a situation not uncommon in many networks, the present invention is operable to perform energy management even without having any knowledge of the pair connectivity. Knowledge relating to the energy of multiple pairs is used to perform energy detect and management. A state machine operates in performing the analysis of the energy using a qualified energy level. The present invention is also operable within systems that do not employ auto-negotiation. In systems where auto-negotiation is performed, the present invention is performed before the auto-negotiation to determine if an operable partner exists within the network.

7190718, Mar 13, 2007

Oct 29, 2002

10/281992

Sang T Bui - Irvine CA, US
Mark Berman - Newport Coast CA, US
Oscar E Agazzi - Irvine CA, US

Broadcom Corporation - Irvine CA

H04B 3/46
H04L 5/16
H04H 7/30

375224, 375219, 375233

An apparatus for processing a received signal includes an analog-to-digital converter (ADC) configured to produce a sampled signal from a received signal using a candidate sampling phase. An adaptive filter includes adaptive filter coefficients and is configured to receive the sampled signal and converge the filter coefficients based on the candidate sampling phase. A controller includes a module for comparing the converged filter coefficients to filter coefficient thresholds, and a module for determining a largest filter coefficient among one or more excessive filter coefficients that exceed one or more corresponding filter coefficient thresholds. The apparatus is stepped through multiple candidate sampling phases. A best sampling phase is selected based on the largest filter coefficients associated with the candidate sampling phases.

7480326, Jan 20, 2009

Oct 29, 2002

10/282206

Sang T Bui - Irvine CA, US
Mark Berman - Newport Coast CA, US
Oscar E Agazzi - Irvine CA, US

Broadcom Corporation - Irvine CA

H04B 1/38
H04B 1/10
G01R 31/08

375219, 375350, 370242

A system includes an adaptive filter coupled to a communication channel. The adaptive filter includes a set of adaptive filter coefficients. A memory stores a predetermined set of filter coefficient thresholds. The filter coefficient thresholds may be indicative of channel faults or a length of the channel. A controller is configured to compare the set of filter coefficients to the predetermined set of filter coefficient thresholds. The controller is configured to determine the information about the channel based on compare results.

7509510, Mar 24, 2009

Sep 28, 2006

11/536509

Mark Berman - Newport Coast CA, US
Richard Glen Thousand - Irvine CA, US

Broadcom Corporation - Irvine CA

G06F 5/06
G06F 1/12

713320, 713321, 713322, 713323, 713324, 370241, 370245, 370252

Energy detect with auto pair select for energy management without ‘a priori’ knowledge of the wire pairs connectivity. The energy detect with auto pair select is operable within systems performing automatic detection of connectivity in systems that employ the Ethernet based media dependent interface crossover (MDIX). Where there has been some cross-over of pairs within the system, a situation not uncommon in many networks, the energy detect with auto pair select is operable to perform energy management without knowledge of the pair connectivity. Selection or detection of coupled wire pairs is acquired by energy detection of coupled wire pairs via a state machine that analyzes a qualified energy level.

8325756, Dec 4, 2012

Apr 11, 2007

11/734147

Mark Berman - Newport Coast CA, US
Manolito Catalasan - Mission Viego CA, US
Ovidiu Bajdechi - Delft, NL
Christopher M. Ward - Utrecht, NL
Bruce H. Conway - Aliso Viejo CA, US
Derek Tam - Irvine CA, US
Frank Van Der Goes - Den Haag, NL

Broadcom Corporation - Irvine CA

H04L 12/66

370465

Aspects of a method and system for a power reduction scheme for Ethernet PHYs are provided. An Ethernet PHY in a link partner may disable transmission via a transmit DAC integrated during an inactive connection, 10Base-T autonegotiation operation, and/or active 10Base-T connection with no data packet transmission. The DAC may be a voltage mode or current mode DAC. The PHY or a MAC device may determine when to disable transmission via the DAC. In this regard, the PHY or the MAC device may generate appropriate signals for disabling the transmission. The DAC may be enabled for transmission by the PHY or the MAC device when a connection becomes active or when an active 10Base-T connection is ready to transmit data. Moreover, the PHY may enable transmission via the DAC when operating in a forced 10Base-T mode of operation and the connection to the link partner is active.

20030179816, Sep 25, 2003

Aug 30, 2002

10/231066

Gary Huff - Laguna Hills CA, US
Mark Berman - Newport Coast CA, US

Broadcom Corporation

H04B001/38

375/219000

The present invention relates to systems and methods for auto power down of transceivers operating using various speeds of connection. The present invention has a local transceiver connected to a remote transceiver via a plurality of wire pairs. The local transceiver is connected to its remote transceiver via a receive wire pair and a transmit wire pair. The local transceiver further comprises receive wire pair listening device connected to receive wire pair energy monitoring device and a system power down device. The local transceiver also comprises a signal transmission device for transmitting signals over the transmit wire pair to its remote transceiver. The remote transceiver may have a similar structure to the local transceiver. The receive wire pair listening device listens on the receive wire pair to determine if the remote transceiver is transmitting signals. If no signals are sent, the energy monitoring device will not detect any energy on the receive wire pair and local transceiver will be powered down. The receive wire pair is the only wire pair that is being monitored for presence of energy.

20040017780, Jan 29, 2004

Jul 26, 2002

10/205624

Mehmet Tazebay - Irvine CA, US
Mark Berman - Newport Coast CA, US

H04J001/16

370/248000, 370/249000

A physical layer communications device including a receiver connected to a physical channel. A transmitter is also connected to the physical channel. A selector reflects a packet received by the receiver from a remote sender over the physical channel back to the sender when the physical layer communications device is in a diagnostic mode.