Fred Berkowitz, 78San Jose, CA

6339599, Jan 15, 2002

Apr 7, 1999

09/286987

Hungming Chang - Cupertino CA
Maged F. Barsoum - Sunnyvale CA
Muoi V. Huynh - San Jose CA
Eugen Gershon - San Jose CA
Fred Berkowitz - Palo Alto CA

Legerity - Austin TX

H04J 324

370445, 370447

A novel collision detecting method at the physical layer is provided for use in a multi-point DMT communication system. A time mark transmitted at the beginning of a portion of a random access data communication is followed by an ID signal for identifying the communication station. The ID signal produced based on the time mark may be transmitted between the time mark and a data portion of the random access data communication. The time mark distorted by a communication channel is received by a receiver of the station that transmitted it. An additional ID signal representing the same ID data as the ID signal is produced based on the received time mark. The additional ID signal is compared with the ID signal received from the communication channel. A collision event is detected if the incoming ID signal does not match the additional ID signal. In response to the detection of the collision event, the transmission of the data portion is terminated.

6434188, Aug 13, 2002

Apr 7, 1999

09/286989

Hungming Chang - Cupertino CA
Maged F. Barsoum - Sunnyvale CA
Muoi V. Huynh - San Jose CA
Eugen Gershon - San Jose CA
Fred Berkowitz - Palo Alto CA
Bin Guo - Fremont CA

Legerity, Inc. - Austin TX

H04B 138

375222, 375261

A random-access local network having multiple nodes provides data communication across residential wiring such as telephone line as a network medium, where each node accesses the network medium using discrete multi-tone (DMT) modulated symbols. The effects of amplitude and phase distortion of transmitted DMT symbols are overcome, without the necessity of complex equalizers, by differentially encoding data prior to transmission, and recovering the transmitted data by comparing phase differentials between consecutive symbol tones. Each transmitted symbol is composed of a plurality of tone signals, each tone signal modulated according to a constellation point in a complex domain. A transmitter modulates data, such as a bit-pair, to a new constellation point based on the value of the bit-pair and a prior position of a consecutively-preceding constellation point, such that the data is represented by the difference in positions between the consecutively-preceding constellation point and the new constellation point. The constellation points are then used to modulate a selected one of the tone signals. Although a receiver detecting the modulated tone signal may recover the transmitted constellation points at different absolute positions due to distortion on he network medium, the relative difference between the consecutively-preceding constellation point and the new constellation point is preserved, enabling the receiver to recover the transmitted data based on the relative difference in positions of the consecutive constellation points.

6442173, Aug 27, 2002

Apr 7, 1999

09/286995

Maged F. Barsoum - Sunnyvale CA
Eugen Gershon - San Jose CA
Fred Berkowitz - Santa Clara CA
Muoi V. Huynh - San Jose CA

Legerity - Austin TX

H04J 324

370445, 370447

A random access data network in accord with the invention will utilize discrete multi-tone (DMT) transmission over a link within a home or other premises, such as over existing in-house telephone wiring. Discrete multi-tone communication in a random access implementation raises a number of timing issues. To address these issues, all packet transmissions through the network will begin with one or more cycles of a defined periodic signal, typically a sinusoid at a specified frequency. All timing of decoding of subsequent signals, such as ID signals and DMT symbols, is based on counting signal sampling intervals following the detected timing mark. The preferred embodiment utilizes differential modulation of the tones within the DMT symbol. Each packet may include a reference symbol to enable demodulation of the first DMT data symbol. Also, the preferred embodiment of the DMT symbol includes a prefix code followed by the actual DMT waveform carrying the modulated information.

6590893, Jul 8, 2003

Apr 7, 1999

09/286997

Eugen Gershon - San Jose CA
Maged F. Barsoum - Sunnyvale CA
Hungming Chang - Cupertino CA
Muoi V. Huynh - San Jose CA
Fred Berkowitz - Palo Alto CA
Bin Guo - Fremont CA

Legerity, Inc. - Austin TX

H04J 306

370354, 370389

A network node configured for transmitting and receiving data to and from other network nodes is able to adapt the transmission rate based on the network conditions. The node initially transmits the data to a receiving node at a first rate. If the data is not received error-free, the node is able to reduce the number of data bits of the current packet that are being transmitted and to increase the amount of redundant data. The node repeats the process until error-free transmission is obtained.

7515640, Apr 7, 2009

Aug 5, 2003

10/633498

Maged F. Barsoum - Sunnyvale CA, US
Fred Berkowitz - Sunnyvale CA, US

Advanced Micro Devices, Inc. - Sunnyvale CA

H04K 1/10

375260, 370525

A system for communicating in a discrete multitone system includes a transmitting station and a receiving station. The transmitting station transmits redundant sets of data on each of a number of different tones. The receiving station receives the redundant sets of data and identifies the data represented by the redundant sets of data using a voting scheme, such as a majority voting scheme.

8638070, Jan 28, 2014

May 19, 2011

13/111902

Nadim Maluf - Los Altos CA, US
Dania Ghantous - Walnut Creek CA, US
Fred Berkowitz - Los Gatos CA, US

Qnovo Inc. - Newark CA

H01M 10/44
H01M 10/46

320141

The present inventions, in one aspect, are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a change in terminal voltage of the battery/cell. In another aspect, the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a partial relaxation time of the battery/cell. In yet another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of an overpotential or full relaxation time of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of charge of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of health of the battery/cell.

2012000, Jan 5, 2012

Jun 29, 2011

13/171612

Fred Berkowitz - Los Gatos CA, US
Nadim Maluf - Los Altos CA, US
Dania Ghantous - Walnut Creek CA, US

H02J 7/00

320118, 320128

The present inventions, in certain aspects, are directed to techniques and/or circuitry to charge a battery the method comprises (i) charging the battery via a charging sequence, wherein charging the battery includes: (a) applying a plurality of charge signals, and (b) applying one or more discharge signals wherein, in response thereto, the battery outputs electrical energy. In certain embodiments, the electrical energy output by the battery in response to the discharge signals is stored (for example, in a capacitor and/or second battery). The present inventions are also directed to, among other things, an apparatus to charge a battery comprising charging circuitry including: (i) a current source to generate a plurality of charge signals, and (ii) a current sink to generate one or more discharge signals, wherein, in response thereto, the battery outputs electrical energy. The apparatus may also include control circuitry, a storage device (for example, in a capacitor and/or second battery), to store the energy output by the battery in response to the one or more discharge signals, and/or an ambient environmental device to adjust the ambient environment or conditions of the battery using the energy output by the battery in response to the one or more discharge signals.

2012020, Aug 9, 2012

Feb 5, 2012

13/366352

Fred Berkowitz - Los Gatos CA, US
Dania Ghantous - Walnut Creek CA, US
Nadim Maluf - Los Altos CA, US
Christina Peabody - Fremont CA, US

H02J 7/00

320139

The present inventions, in one aspect, are directed to techniques and/or circuitry to applying a current pulse to the terminals of the battery during a charge, measuring a voltage at the terminals of the battery, determining a relationship of an open circuit voltage to an amount of charge in the battery using data which is representative of a state of health of the battery, calculating an open circuit voltage of the battery using the voltage measured at the terminals of the battery, a current applied to or removed from the battery and an impedance of the battery, and determining a state of charge of the battery using (i) the calculated open circuit voltage and (ii) the relationship of the open circuit voltage to the amount of charge.