DONALD GEORGE MCMULLIN
Pilots at Bootstrap Pl, Laguna Beach, CA

6724335, Apr 20, 2004

Jun 3, 2003

10/452211

Ramon A. Gomez - San Juan Capistrano CA
Donald McMullin - Laguna Hills CA

Broadcom Corporation - Irvine CA

H03M 166

341144, 455112, 455118

Systems and methods for digital upconversion of baseband television signals that can be used in cable television headend systems are provided. In one embodiment, the system includes a digital frequency adjustment system and a digital to analog conversion system. In a feature of the embodiment, the digital frequency adjustment system consists of set of digital upconversion and upsample elements that shift upwards the frequency of baseband signals. In a further feature of the embodiment, a tree structure of sets of upsample and upconversion elements is used. In another embodiment, the system includes digital and analog frequency adjustment systems in which the frequencies of the input signals are partially upshifted within both the digital and analog domains. Methods for digital upconversion of television signals are also provided.

7903598, Mar 8, 2011

Jun 7, 2010

12/795291

Dongsoo Daniel Koh - Irvine CA, US
Ramon Alejandro Gomez - San Juan Capistrano CA, US
Francesco Gatta - Laguna Niguel CA, US
Harold Raymond Whitehead - Duluth GA, US
Donald G. McMullin - Laguna Hills CA, US

Broadcom Corporation - Irvine CA

G06F 11/30, H04Q 1/30, G08C 7/00

370311, 370352, 370401, 375222, 713320, 340 732, 725118

An apparatus and method is disclosed to calculate the actual received desired channel power from the downstream transmit power of a Cable Modem Termination System (CMTS) when operating at the nominal line voltage and/or at the normal room temperature as per the DOCSIS specification. A Set-top Device produces a Downstream Power Management (DPM) gain measurement signal having a known power level. The Set-top Device embeds the DPM gain measurement signal onto a received downstream multi-channel communication signal. After embedding the DPM gain measurement signal onto the downstream multi-channel communication signal, the Set-top Device downconverts the combined DPM gain measurement signal and downstream multi-channel communication signal to recover one or more communication channels containing information of a broadcast. The Set-top Device measures a power level of a representation of the DPM gain measurement signal embedded within the one or more communication channels containing the information of the broadcast to determine a Set-top Device gain. The Set-top Device measures a power level of the one or more communication channels containing the information of the broadcast.

2006000, Jan 12, 2006

Jan 5, 2005

11/029733

Ramon Gomez - San Juan Capistrano CA, US
Donald McMullin - Laguna Hills CA, US

H03H 7/30

375235000

Certain embodiments of the invention provide a method and system for enhancing image rejection in communications receivers. A test tone signal may be injected into a receiver. A quadrature error in an in-phase (I) channel and a quadrature (Q) channel of the receiver may be estimated based on the injecting of the test tone signal into the receiver. A plurality of equalizer coefficients may be adjusted to correct the estimated quadrature error in the I channel and the Q channel of the receiver. A corrected I channel and a corrected Q channel may be generated corresponding to the I channel and the Q channel in the receiver based on the adjusting of the equalizer coefficients.

7233778, Jun 19, 2007

May 27, 2004

10/854769

Richard Nelson - Irvine CA, US
Brian Sprague - Irvine CA, US
Donald McMullin - Laguna Hills CA, US
Richard Prodan - Boulder CO, US
Pieter Vorenkamp - Laguna Niguel CA, US

Broadcom Corporation - Irvine CA

H03D 5/00

455142, 455144, 455434

An apparatus for converting a signal from a first analog format to a second analog format. The apparatus has an input port, a first converter, filters, first mixers, second converters, and an output port. The input port is configured to receive the signal. The signal has the first analog format. In an embodiment, the first analog format complies with the SCTE 40 2003 technical standard. In an embodiment, the second analog format is a conventional analog format. The first converter is coupled to the port and is configured to convert the signal to a first digital format. The filters are coupled to the first converter and configured to isolate a first channel of the signal from a second channel of the signal. The first mixers are coupled to the filters and configured to expand the first channel and the second channel to a second digital format. The second converters are coupled to the first mixers and configured to convert the first channel and the second channel to the second analog format.

7778241, Aug 17, 2010

Jul 30, 2008

12/219924

Dongsoo Daniel Koh - Irvine CA, US
Ramon Alejandro Gomez - San Juan Capistrano CA, US
Francesco Gatta - Laguna Niguel CA, US
Harold Raymond Whitehead - Duluth GA, US
Donald G. McMullin - Laguna Hills CA, US

Broadcom Corporation - Irvine CA

H04L 12/66, H04L 5/16, H04N 7/173

370352, 370401, 375222, 348 E5002, 725118

An apparatus and method is disclosed to calculate the actual received desired channel power from the downstream transmit power of a Cable Modem Termination System (CMTS) when operating at the nominal line voltage and/or at the normal room temperature as per the DOCSIS specification. A Set-top Device produces a Downstream Power Management (DPM) gain measurement signal having a known power level. The Set-top Device embeds the DPM gain measurement signal onto a received downstream multi-channel communication signal. After embedding the DPM gain measurement signal onto the downstream multi-channel communication signal, the Set-top Device downconverts the combined DPM gain measurement signal and downstream multi-channel communication signal to recover one or more communication channels containing information of a broadcast. The Set-top Device measures a power level of a representation of the DPM gain measurement signal embedded within the one or more communication channels containing the information of the broadcast to determine a Set-top Device gain. The Set-top Device measures a power level of the one or more communication channels containing the information of the broadcast.

2005002, Jan 27, 2005

May 27, 2004

10/854768

Richard Nelson - Irvine CA, US
Brian Sprague - Irvine CA, US
Donald McMullin - Laguna Hills CA, US
Richard Prodan - Boulder CO, US
Pieter Vorenkamp - Laguna Niguel CA, US

Broadcom Corporation - Irvine CA

H04B001/40, H04B001/18

455150100, 455077000, 455182300, 455173100, 455192300

An apparatus for tuning a frequency conversion device. The apparatus has a channel identifier, a channel cross-referencer, and a frequency conversion device tuner. The channel identifier is configured to identify a first channel to which a receiver is tuned. The channel cross-referencer is coupled to the channel identifier and is configured to cross-reference the first channel with a second channel. The frequency conversion device tuner is coupled to the channel cross-referencer and is configured to tune the frequency conversion device to the second channel. An apparatus for processing a signal. The apparatus has an input port, a signal format identifier, a switch, a converter, an output port, and a bypass signal path. The input port is configured to receive the signal. The signal format identifier is coupled to the input port and configured to identify the signal as having a first format or a second format. The switch is coupled to the signal format identifier. The converter is configured to be coupled to the switch and to convert the signal from the first format to the second format. The output port is coupled to the converter and configured to produce the signal. The bypass signal path is coupled to the output port and configured to be coupled to the switch and to convey the signal.

7768434, Aug 3, 2010

Apr 19, 2004

10/826281

Ramon A. Gomez - San Juan Capistrano CA, US
Donald McMullin - Laguna Hills CA, US

Broadcom Corporation - Irvine CA

H03M 1/66

341144, 455112, 455118

Systems and methods for digital upconversion of baseband television signals that can be used in cable television headend systems are provided. In one embodiment, the system includes a digital frequency adjustment system and a digital to analog conversion system. In a feature of the embodiment, the digital frequency adjustment system consists of set of digital upconversion and upsample elements that shift upwards the frequency of baseband signals. In a further feature of the embodiment, a tree structure of sets of upsample and upconversion elements is used. In another embodiment, the system includes digital and analog frequency adjustment systems in which the frequencies of the input signals are partially upshifted within both the digital and analog domains. Methods for digital upconversion of television signals are also provided.

8334721, Dec 18, 2012

Sep 6, 2011

13/226233

Stephen A. Jantzi - Laguna Beach CA, US
Anilkumar V. Tammineedi - Aliso Viejo CA, US
Jungwoo Song - Irvine CA, US
Lawrence M. Burns - Laguna Hills CA, US
Donald G. McMullin - Laguna Hills CA, US
Agnes N. Woo - Encino CA, US

Broadcom Corporation - Irvine CA

H03F 1/14

330 51, 330129, 330251, 330285, 341144, 341173

An upstream amplifier is integrated on a substrate with a digital-to-analog converter (DAC) to form an integrated circuit. In an embodiment, a low-pass filter is also integrated on the substrate. The output signal level of the upstream amplifier is controllable. In embodiments, fine adjustments are made to the output signal level of the upstream amplifier by varying a bias current of the DAC. A software control bit is used to switch between a power-on mode of operation and a power-down mode of operation. The upstream amplifier transmits in a burst mode. The power consumption of the upstream amplifier scales with the amplifier's output signal level. A high degree of matching is attained between the positive and negative paths of the upstream amplifier. This provides high immunity from common-mode disturbances such as substrate noise, clock spurs, and glitches caused by a gain change.

7154346, Dec 26, 2006

Jul 30, 2004

10/902465

Steven Jaffe - Irvine CA, US
Donald McMullin - Laguna Hills CA, US
Ramon Gomez - San Juan Capistrano CA, US

Broadcom Corporation - Irvine CA

H03L 7/00, H03B 21/00, H03B 27/00

331 18, 331 45, 327105, 327106

An apparatus provides a local oscillator signal based on a selected channel of an RF input signal. For example, the apparatus can set a frequency of the local oscillator signal based on the selected channel. Digital circuitry can be used to generate the local oscillator signal. For instance, the digital circuitry can provide a digital representation of the local oscillator signal. A DAC can convert the digital representation to an analog signal. Other circuitry can provide first and second quadrature components of the local oscillator signal, based on the analog signal.

8578434, Nov 5, 2013

May 20, 2005

11/133275

Donald G. McMullin - Laguna Hills CA, US
Lawrence M. Burns - Los Altos CA, US
Leonard Dauphinee - Irvine CA, US
Ramon A. Gomez - San Juan Capistrano CA, US
Loke Tan - Newport Coast CA, US

Broadcom Corporation - Irvine CA

H04N 7/173

725111, 725100

The present invention is an integrated cable modem tuner. In one embodiment, the upstream path and the downstream path are integrated on a common semiconductor substrate. The down-stream path can include a TV tuner and digital receiver portion that is integrated on a common semiconductor substrate with the power amplifier of the upstream path. In another embodiment, the TV tuner is implemented on a first semiconductor substrate and the digital receiver portion and the power amplifier are configured on a second semiconductor substrate. However, the two substrates are mounted on a common carrier so that the cable modem appears to be a single chip configuration to the user.