David A Braun

US Patent:

6385756, May 7, 2002

Filed:

Mar 23, 1999

Appl. No.:

09/274990

Inventors:

David P. Braun - Irvine CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

G06F 1750

US Classification:

716 1, 716 8

Abstract:

A functionality selection system that selects the operation of a function within a semiconductor device. The semiconductor device is capable of performing a plurality of functions. The functions are already embedded in the semiconductor device and available for selection. The functionality selection system operates prior to encapsulation of the semiconductor device. The availability of performing the functionality selection just prior to encapsulation provides numerous advantages over conventional functionality selection systems. By performing the selection of the semiconductor devices functionality to just prior to encapsulation, the lag time between a customers order and a shipment of the semiconductor device is shortened. The lag time can be shortened to only two weeks in contrast to many conventional selection systems that have lag times as long as three months. The invention is also a functionality identification system.

US Patent:

6389033, May 14, 2002

Filed:

Jan 25, 1999

Appl. No.:

09/237146

Inventors:

Conrad A. Maxwell - Irvine CA
David P. Braun - Irvine CA
George C. Sneed - Irvine CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H04L 1240

US Classification:

370438, 370489

Abstract:

A system and method for performing signal acceleration on data packets communicated across an AC-link bus directly interconnecting a codec to a codec controller. The system positions an accelerator directly in the communication path between the codec and its respective codec controller, so that the accelerator is arranged to receive signals traveling through the AC-link bus. This arrangement allows data manipulation to be performed by the accelerator on the data packets communicated across the AC-link bus, where the processed data packets are output by the accelerator back onto the AC-link bus. The accelerator is arranged to have real-time access to the input and output data streams traveling through the AC-link bus, so that data manipulation can be performed without multiple communications to the codec controller or host computer CPU.

US Patent:

6434633, Aug 13, 2002

Filed:

Nov 2, 1999

Appl. No.:

09/432141

Inventors:

David P Braun - Irvine CA
Mark E Miller - Mission Viejo CA
Randy Nuss - Irvine CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

G06F 300

US Classification:

710 15, 710 23, 710 46, 710 64, 710266

Abstract:

A method and apparatus for facilitating AC-link communications between a controller and a slow peripheral of a codec is disclosed. In one embodiment, the GPIO_INT bit (i. e. bit in slot in the AC-links SDATA_IN line) is utilized as an interrupt flag to indicate when data requested by the controller from the slow peripheral is returned and is available to be read by the controller. The GPIO_INT bit can also be used to indicate when a write into the slow peripheral is completed. In this embodiment, a âperipheral ready bitâ or a âperipheral ready signalâ originated from the slow peripheral is used to set the GPIO_INT bit. Another embodiment is directed to controllers which ignore the GPIO_INT bit as a source of interrupt. To accommodate these controllers, one of the GPIO bits is used to send the value of the âperipheral ready bitâ to the controller. Upon receipt of the peripheral ready bit as one of the GPIO bits from the codec, the controller would interrupt the host CPU and the host CPU is made aware that the data requested from the slow peripheral is returned and is available to be read.

US Patent:

6466584, Oct 15, 2002

Filed:

Sep 30, 1998

Appl. No.:

09/165592

Inventors:

Conrad A. Maxwell - Irvine CA
David P. Braun - Irvine CA
George C. Sneed - Irvine CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H04J 322

US Classification:

370465, 370458, 375222

Abstract:

A system and method for performing a digital subscriber line (DSL) transmission over an AC-link bus directly connecting a modem codec to a codec controller. The codec and codec controller connected to the AC-link bus are configured for a particular industry-defined AC-link bus protocol defining a data packet having multiple time-division multiplexed (TDM) data slots, where the present invention redefines the protocol of the AC-link bus in order to allow a high bandwidth DSL transmission to be performed using the data packets transmitted over the AC-link bus. The present invention redefines the AC-link bus protocol to provide at least one additional TDM data slot in the data packet for handling DSL modem transmission data streams. The reconfigured data packet provides additional bandwidth capabilities which allow high-bandwidth DSL modem transmissions to be sent in the data packets transmitted over the AC-link bus, which where not previously achievable using the industry-defined AC-link protocol.

US Patent:

6473870, Oct 29, 2002

Filed:

Dec 11, 2000

Appl. No.:

09/734848

Inventors:

Conrad A. Maxwell - Irvine CA
David P. Braun - Irvine CA
Tom Lau - Coto de Caza CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

G06F 1100

US Classification:

714 38, 710 11

Abstract:

A system and method for providing soft modem and soft audio copy protection for hardware interfaces and software code utilized in an AC 97 architecture to prevent against unauthorized copying. The system confirms that a codec connected to the AC 97 architecture is provided by a desired supplier. The system performs a sample rate negotiation to determine an operating sample rate for data transfer. When the system provides a desired sample rate which does not correspond to a sample rate appearing in a predefined set of sample rates supported by an AC 97 architecture, the system expects the codec to echo back a predesignated sample rate during the sample rate negotiation indicating that a desired sample rate has been received which does not correspond to one of the supported sample rates. When the system determines that the predesignated sample rate has been echoed back, the copy protection system recognizes the codec as being provided by an authorized supplier and authorizes the codec for operation. However, the system disables the attached codec when it determines that the predesignated sample rate has not been echoed back from the codec in response to reading an unsupported sample rate from the control register.

US Patent:

6534329, Mar 18, 2003

Filed:

Feb 2, 1999

Appl. No.:

09/243173

Inventors:

Alan J. Heeger - Santa Barbara CA
David Braun - Goleta CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H01L 2144

US Classification:

438 22, 438 99

Abstract:

Visible light LEDs are produced having a layer of conjugated polymer which is cast directly from solution or formed as a gel-processed admixture with a carrier polymer. The LEDs can be formed so as to emit polarized light.

US Patent:

6878974, Apr 12, 2005

Filed:

Aug 20, 2002

Appl. No.:

10/223917

Inventors:

Alan J. Heeger - Santa Barbara CA, US
David Braun - San Luis Obispo CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H01L021/44

US Classification:

257103, 313498

Abstract:

Visible light LEDs are produced having a layer of conjugated polymer which is cast directly from solution or formed as a gel-processed admixture with a carrier polymer. The LEDs can be formed so as to emit polarized light.

US Patent:

20050280020, Dec 22, 2005

Filed:

Feb 2, 2005

Appl. No.:

11/050082

Inventors:

Alan Heeger - Santa Barbara CA, US
David Braun - San Luis Obispo CA, US

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

H01L029/24

US Classification:

257103000

Abstract:

Visible light LEDs are produced having a layer of conjugated polymer which is cast directly from solution or formed as a gel-processed admixture with a carrier polymer. The LEDs can be formed so as to emit polarized light.