Patents Assigned to Broadcom
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Patent number: 8068794Abstract: Aspects of a method and system for a Multisystem Polar Transmitter may include a single integrated circuit comprising one or more Direct Digital Frequency Synthesizer (DDFS). The single integrated circuit may generate a plurality of signals compliant with at least a first wireless protocol and a second wireless protocol. At least one of the plurality of signals is polar modulated using the DDFS. The single integrated circuit may comprise a plurality of wireless transmitters. In another embodiment of the invention, a plurality of baseband signals compliant with the first and second protocols may be combined. The first protocol may be Bluetooth® and the second protocol may be Wireless LAN. The combined plurality of baseband signals may be modulated via a single wireless transmitter on the integrated circuit. The phase and frequency for polar modulation may be adjusted using the DDFS, while the amplitude may be adjusted using an amplifier.Type: GrantFiled: February 28, 2007Date of Patent: November 29, 2011Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8068549Abstract: A trellis decoder decodes a stream of encoded symbols, including symbols of a first type (e.g. symbols encoded with a first trellis code) and symbols of a second type (e.g. encoded with a second, more robust, trellis code), without storing path indicators along a trellis for symbols of the first type. In this way, limited memory may be used to store path indicators along the trellis for symbols of the second type. This allows for more accurate decoding of the symbols of the second type. For transitions from symbols of the second type to symbols of the first type, states of the trellis decoder may be stored. In this way, paths may be traced back along the trellis for trellis decoding, without the path indicators for the symbols of the first type.Type: GrantFiled: June 8, 2010Date of Patent: November 29, 2011Assignee: Broadcom CorporationInventors: Haosong Fu, Azzedine Touzni, Raghuram Behara, Ajay Bhaskaran, Samir N. Hulyalkar
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Patent number: 8068697Abstract: A method of correcting a current image taken by a capturing device, the current image captured after a previous image, the method comprising the steps of: determining a noticeable pixel group, such as an edge of an object in the previous image; locating the noticeable pixel groups in the current image, by finding corresponding pixels whose values are most similar to the values of the noticeable pixels, determining the offset between the previous image and the current image, and correcting the current image using the offset. Optionally, multiple offsets are determined for multiple areas in the current image, and other areas in the image are optionally corrected according to interpolations between the determined offsets.Type: GrantFiled: October 18, 2007Date of Patent: November 29, 2011Assignee: Broadcom CorporationInventors: Ilia Vitsnudel, Eduard Oks
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Publication number: 20110284840Abstract: A system or apparatus for monitoring an Integrated Circuit (IC) chip includes: a sense circuit at least partially constructed on the IC chip and configured to produce one or more sense signals each indicative of a corresponding process-dependent circuit parameter of the IC chip; and a digitizer module configured to produce, responsive to the one or more sense signals, one or more digitized signals each representative of a corresponding one of the sense signals. A controller is configured to determine a value of one or more of the process-dependent circuit parameters based on one or more of the digitized signals.Type: ApplicationFiled: November 22, 2010Publication date: November 24, 2011Applicant: Broadcom CorporationInventors: Lawrence M. Burns, Leonard Dauphinee, Ramon A. Gomez, James Y.C. Chang
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Publication number: 20110286473Abstract: Signal processing under attenuated transmission conditions. Within an orthogonal signal space, the number of orthogonal signals that are used to transmit information from a transmitter to a receiver is reduced and the transmitted power of each of the now remaining orthogonal signals is modified; this may involve increasing the power of all of the remaining orthogonal signals equally or alternatively modifying them individually. The same modulation used before the reduction may also be used afterwards; within communication systems having multiple transmitter-receiver paths, this will ensure that the communication system's throughput and efficiency will remain unchanged even when one (or more) transmitter-receiver paths are highly attenuated. In addition, robust mode operation is provided for ranging and registering of transmitter devices when entering the communication system.Type: ApplicationFiled: May 29, 2011Publication date: November 24, 2011Applicant: BROADCOM CORPORATIONInventors: Bruce J. Currivan, Thomas J. Kolze, Daniel H. Howard, Gottfried Ungerboeck
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Publication number: 20110286330Abstract: A system and method is presented that uses hardware at a central node to determine if bandwidth being provided to a remote node in accordance with an unsolicited grant service (UGS) flow requires adjustment. In one embodiment, the hardware performs this function by comparing information in two consecutively-received UGS extended headers from the same remote device. If the information in the current and previous UGS extended headers differ, then an indication is provided to software of the central node that the bandwidth being provided to the remote node requires adjustment.Type: ApplicationFiled: November 22, 2010Publication date: November 24, 2011Applicant: Broadcom CorporationInventors: Niki Pantelias, Kenneth G. Zaleski, II, Gale Shallow, Lisa Denney
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Publication number: 20110287714Abstract: A near field communications (NFC) device is disclosed that interacts with other NFC devices to exchange information and/or the data. Another NFC device inductively couples a received communications signal onto an antenna circuit of the NFC device to provide a recovered communications signal. An overvoltage protection module regulates a power level of the recovered communication signal by detuning the antenna circuit when the power level of the recovered communication signal may cause damage the NFC device. Active components of the overvoltage protection module, such as voltage controlled impedances, operate in their linear mode of operation to reduce unwanted emissions during this regulation process.Type: ApplicationFiled: May 20, 2011Publication date: November 24, 2011Applicant: BROADCOM CORPORATIONInventors: Robin Wyndham John Wilson, Philip Dorning
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Publication number: 20110286393Abstract: A communications device includes a first circuit and a second circuit. The first circuit includes a wired medium interface circuit that is configured to, in use, communicate data over a wired medium. The second circuit includes a wireless medium interface circuit that is configured to, in use, communicate data over a wireless medium. A destination address controller is included in the first circuit and is operative to determine to which of a plurality of destination addresses at a communications device data is to be communicated from the second circuit. The communications device can have individual visibility of a plurality of destination addresses (e.g. for respective devices) when data is received or transmitted by the wireless medium interface circuit (second circuit).Type: ApplicationFiled: May 24, 2011Publication date: November 24, 2011Applicant: BROADCOM CORPORATIONInventors: NILS H. FOUREN, JUAN CARLOS RIVEIRO INSUA, JOSE ABAD MOLINA, David Ruiz Lopez
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Publication number: 20110285908Abstract: A system and method for providing access to a video display for multiple devices. Various aspects of the present invention may comprise receiving, at a video display system, a first video data signal through a first data communication interface and a second video data signal through a second data communication interface. A processor module may process the first and second video data signals to generate video information of first and second display windows in a composite display. For example, the processor module may transform and translate video information to fit display windows. The processor module may, for example, generate an output video signal comprising information of the first window and information of the second window. Such a signal may, for example, be utilized to drive an output display showing the first and second windows. Various aspects may also provide method steps and apparatus for controlling aspects of the displayed windows.Type: ApplicationFiled: August 1, 2011Publication date: November 24, 2011Applicant: BROADCOM CORPORATIONInventors: Jeyhan Karaoguz, James D. Bennett
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Patent number: 8064923Abstract: A circuit includes a global positioning system (GPS) receiver that receives a GPS signal and that generates GPS position data based on the GPS signal. A wireless telephone transceiver section coupled to generate an outbound RF signal from an outbound symbol stream, and to convert an inbound RF signal into an inbound symbol stream. A processing module is coupled to convert outbound data into the outbound symbol stream, convert the inbound symbol stream into inbound data, to weight the GPS position data with a first weighting factor when the wireless telephone transceiver section is generating the outbound RF signal to produce first weighted GPS position data and weight the GPS position data with a second weighting factor with a second weighting factor when the wireless telephone transceiver section is not generating the outbound RE signal to produce second weighted GPS position data, and to generate position information based on at least one of the first and second weighted GPS position data.Type: GrantFiled: April 28, 2007Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Ahmadreza (Reza) Rofougaran
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Patent number: 8063916Abstract: A method and system that blend graphics layers and a video layer. The graphics layers may be above and below the video layer, which may be a streaming video. The graphics layers may be stored in memory, blended and stored back in memory. The blended graphics layers may be combined with streaming video and output on a display. Blending the graphics in memory may be done offline and may save processing time and improve real-time combining with streaming video. In an embodiment of the present invention, there may be several layers of graphics below the video layer, and several graphics layers above the video layer. The top graphics layers may be blended into one top graphics layer, and the bottom graphics layers may be blended into one bottom graphics layer. The top and bottom graphics layers may be then blended into one graphics layer and combined with the video layer.Type: GrantFiled: October 8, 2004Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Jason Herrick, Darren Neuman
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Patent number: 8063769Abstract: A dual band antenna includes a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band. A near field antenna structure facilitates the communication of second data with a remote device via near field signaling in a near field band. The far field antenna structure and the near field antenna structure share at least one common antenna element.Type: GrantFiled: September 15, 2008Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Ahmadreza Reza Rofougaran
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Patent number: 8064860Abstract: A method and apparatus for using a conventional oscillator in a cellular telephone transceiver as a source of a reference signal for a GPS receiver. In one embodiment, the method comprises using a voltage-controlled oscillator (“VCXO”) within a cellular telephone transceiver to generate a reference frequency signal for the GPS receiver. Circuitry within the telephone transceiver generates a frequency error signal. Both of these signals are coupled to GPS circuitry and used to control a carrier numerically controlled oscillator (“NCO”) and a code NCO. The NCOs produce a tuning signal and a timing signal, respectively. The GPS circuitry uses the NCO generated signals to process GPS signals.Type: GrantFiled: November 9, 2010Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Charles Abraham
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Patent number: 8064936Abstract: Aspects of a method and system for a multistandard proxy may include establishing a microwave communication link between a wireless portable storage device and a wireless transmitter and/or wireless receiver via a secondary wireless link. Beamforming parameters of a first antenna array coupled to the wireless portable storage device and a second antenna array coupled to the wireless transmitter and/or wireless receiver may be adjusted based on data received via the secondary wireless link. The wireless portable storage and the wireless transmitter and/or wireless receiver may exchange data via the first antenna array and the second antenna array. A secondary wireless link may be established to transmit setup data for the microwave communication link. The secondary wireless link may be established via a Bluetooth and/or WAN protocol.Type: GrantFiled: February 28, 2008Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Ahmadreza Rofougaran
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Patent number: 8062133Abstract: The position of a mobile gaming object within a video gaming environment is determined using at least one combined Radio Frequency (RF) signal. Each combined RF signal includes at least a pair of RF signals that have a known relationship therebetween. Based on signal information representative of properties of the combined RF signal as received and the known relationship, respective distances between the mobile gaming object and a plurality of transmitter/receivers can be determined. The position of the mobile gaming object within the video gaming environment is then determined from the distances.Type: GrantFiled: June 19, 2008Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Nambirajan Seshadri, Brima B. Ibrahim, John Walley, Jeyhan Karaoguz
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Patent number: 8065350Abstract: Herein described is a method and system for providing shared access to data residing within a data pool of a data storage device. Aspects of the invention incorporate the use of one or more mechanisms by which access to the data occurs. The one or more mechanisms may be enabled or disabled by way of one or more selections that are made using a user interface. In a representative embodiment, the user interface may comprise a web browser. The method may involve assigning one or more values to one or more variables and subsequently executing a software program. The software program invokes one or more share access mechanisms when the one or more values are equal to one or more enabling values. The system may comprise a memory that is used to store the software program and a processor that is used to execute the software program.Type: GrantFiled: January 25, 2006Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Christopher S. Wilson
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Patent number: 8065588Abstract: Formulaic flexible collision-free memory accessing for parallel turbo decoding with quadratic polynomial permutation (QPP) interleave. A means is presented by which any desired number of parallel implemented turbo decoding processors can be employed to perform turbo decoding that has been performed using a QPP interleave. This approach is presented to allow an arbitrarily selected number (M) of decoding processors (e.g., a plurality of parallel implemented turbo decoders) to perform decoding of a turbo coded signal while still using a selected embodiment of a QPP interleave. In addition, a collision-free memory mapping, MOD,C,W) provides more freedom for selecting the particular quadratic polynomial permutation (QPP) interleave (?) that satisfies a parallel turbo decoding implementation with any desired number of parallel implemented turbo decoding processors.Type: GrantFiled: June 7, 2007Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Ba-Zhong Shen, Tak K. Lee
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Patent number: 8064967Abstract: A radio frequency (RF) integrated circuit (IC) operable to support wireless communications is provided. In one embodiment, the RF IC includes an advanced high-performance (AHB) bus matrix, a microprocessor core coupled to the AHB bus matrix, a plurality of processing modules wherein each processing module is operable to support one or more functions of the RF IC, and a plurality of power islands. Each power island is associated with one or more functions of the RF IC. This arrangement allows power islands coupled to the processing modules associated with the one or more functions associated with the power island to supply power for the processing modules associated with the one or more functions associated with the power island. Power from the power island(s) to the processing module(s) may be reduced or secured when the one or more functions associated with the power island is not required.Type: GrantFiled: March 27, 2008Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Hooman Darabi, Vafa James Rakshani, Claude G. Hayek
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Patent number: 8064526Abstract: Presented herein are systems, methods, and apparatus for real-time high definition television encoding. In one embodiment, there is a method for encoding video data. The method comprises estimating amounts of data for encoding a plurality of pictures in parallel; generating a plurality of target rates corresponding to the plurality of pictures based on the estimated amounts of data for encoding the plurality of pictures; and lossy compressing the plurality of pictures based on the target rates corresponding to the plurality of pictures.Type: GrantFiled: April 27, 2006Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventor: Douglas Chin
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Patent number: 8064859Abstract: An integrated circuit radio transceiver and method therefor includes a high-pass variable gain amplifier (HPVGA) operably disposed within one of the transmitter and the receiver front ends operable to provide a linear variable gain and a substantially constant high-pass frequency corner that does not vary with changes in gain level settings. The HPVGA includes an amplifier operably disposed to receive an input signal and to produce an amplified output based upon the input signal, an adjustable resistance block operable to adjust resistance based upon a gain control input and corner drift compensation block operably disposed to provide corner frequency compensation at the input terminal of the amplifier that is further coupled to receive the input signal from the adjustable resistance block.Type: GrantFiled: June 10, 2008Date of Patent: November 22, 2011Assignee: Broadcom CorporationInventors: Michael S. Kappes, Arya Reza Behzad