Patents Assigned to Broadcom
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Patent number: 7787849Abstract: An integrated circuit (IC) includes an RF receiver having an AGC module that generates an automatic gain control (AGC) signal based on a strength of a received signal, and a low noise amplifier that amplifies the received signal based on the AGC signal. A processing module generates a power mode signal based on the AGC signal, the power mode signal for adjusting a power consumption parameter of the IC based on the power mode signal.Type: GrantFiled: August 31, 2007Date of Patent: August 31, 2010Assignee: Broadcom CorporationInventor: Ahmadreza (Reza) Rofougaran
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Publication number: 20100214907Abstract: A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value.Type: ApplicationFiled: April 1, 2010Publication date: August 26, 2010Applicant: Broadcom CorporationInventors: Dolors SALA, Ajay Chandra V. GUMMALLA, Ted RABENKO
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Publication number: 20100214946Abstract: A system and method for discovering a cable type using an automated, systematic process. A PHY can be designed to measure electrical characteristics (e.g., insertion loss, cross talk, length, etc.) of the cable to enable determination of the cable type. The determined cable type can be used in diagnosis of cabling infrastructure or in a dynamic configuration or operation process.Type: ApplicationFiled: May 7, 2010Publication date: August 26, 2010Applicant: Broadcom CorporationInventors: Wael William Diab, Minshine Shih
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Publication number: 20100214708Abstract: A system and method for using a physical layer device to locate a thermal signature in a cable plant for diagnostic, enhanced, and higher power applications. Cable heating in specific sections of a network cable is detected through an automatic identification of a thermal signature in electrical measurements of a network cable. The correlation of the thermal signature to a specific section of the network cable enables network personnel to locate hot spots in the network cable with ease.Type: ApplicationFiled: May 3, 2010Publication date: August 26, 2010Applicant: Broadcom CorporationInventors: Wael William Diab, Scott Powell, Minshine Shih
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Publication number: 20100215284Abstract: A video processing system may implement a video scaling algorithm using interpolation based on polyphase filtering. A video or graphics scaler may be utilized to scale luma, chroma, and/or alpha information in a video image. The scaler may comprise a first polyphase sub-filtering with zero phase shift that generates an in-phase filtered output from an input video image and a second polyphase sub-filtering that generates an out-of-phase filtered output from the input video image. The video scaler may also comprise an interpolator that may generate a scaled video image based on the generated in-phase and out-of-phase filtered outputs and a scaling factor. The scaling factor may be determined based on an input video size (M) and a desired output video size (N). The interpolation of the generated in-phase and out-of-phase filtered outputs in the video scaler may be implemented by utilizing a Farrow structure.Type: ApplicationFiled: March 30, 2010Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventors: Sheng Zhong, Darren Neuman, Brian Schoner
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Publication number: 20100216412Abstract: A configurable radio frequency (RF) transceiver includes a configuration controller that generates at least one mode control signal that indicates an isolation mode, a frequency mode and an antenna mode. An antenna section includes a plurality of antennas and that selects an antenna configuration based on the at least one mode control signal. An isolation section includes a plurality of isolation circuits and that selects an isolation circuit based on the at least one mode control signal. An RF section selects an RF configuration based on the at least one mode control signal. A baseband section selects a baseband configuration based on the at least one mode control signal.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventor: Ahmadreza Reza Rofougaran
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Publication number: 20100217835Abstract: A handheld computing device includes a handheld memory for storing at least one handheld application that includes a file transfer application and for storing at least one handheld file. A handheld processing module executes the file transfer application. A physical docking interface accesses at least one extended file stored in an extended computer unit in a physical docked mode. A wireless local area network (WLAN) transceiver communicates with at least one remote unit via WLAN communications. When the handheld computing unit is in the physical docking mode, the file transfer application provides the remote unit access to the handheld file and the extended file via WLAN communications. When the handheld computing unit is uncoupled from the extended computer, the file transfer application provides the remote unit access to the handheld file via WLAN communications.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Applicant: Broadcom CorporationInventor: Ahmadreza (Reza) Rofougaran
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Publication number: 20100214063Abstract: An radio frequency identification (RFID) receiver front end includes an antenna module coupled to generate a plurality of millimeter wave RFID signals from a remote RFID device. A plurality of a phase adjusters generate a plurality of phase adjusted signals from the plurality of millimeter wave RFID signals, based on a plurality of control signals. A combining module combines the plurality of phase adjusted signals to generate a received signal. A signal strength module generates a signal strength of the received signal. A control module generates the plurality of control signals to reduce the signal strength of the received signal.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventor: Ahmadreza (Reza) Rofougaran
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Publication number: 20100216504Abstract: A system and method for facilitating the authentication of wireless devices in an environment with multiple wireless networks. A user wishing to join an operating wireless network can bring his wireless device within close physical proximity, for example, less than one meter, of a device in the network that he wishes to join. The user then presses an authenticate button, which causes both devices to enter a low transmission power mode. In such case, the devices are only capable of operation within the close proximity. Being in low power mode will diminish the possibility of eavesdropping on the authentication process. Power down mode also reduces the amount of message traffic in the area and saves scarce power and processing resources at the nodes, which are now out of range. Authentication then takes place in low power mode and once completed, both devices resume normal power levels and continue communicating normally.Type: ApplicationFiled: May 10, 2010Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventors: Erlend Olson, K.C. Murphy
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Publication number: 20100217836Abstract: A handheld computing device includes a video camera for generating a local video signal. A handheld memory stores at least one handheld application that includes a video application. A handheld processing module, coupled to the handheld memory, executes the video application, based on the local video signal. A network interface sends the local video signal to a remote device via a network. A physical docking interface accesses at least one resource of an extended computer unit in a physical docked mode when the handheld computing unit is coupled to the extended computer unit via the physical docking interface. A quasi docking interface accesses at least one resource of the extended computer unit in the quasi docked mode when the handheld computing unit is coupled to the extended computer unit via the quasi docking interface.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventor: Ahmadreza Reza Rofougaran
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Publication number: 20100214481Abstract: 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: May 5, 2010Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventors: Jeyhan Karaoguz, James D. Bennett
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Publication number: 20100214968Abstract: Idle mode power consumption reduction in wireless communications. Within a wireless communication device that is operative to communicate with any one of a number of servicing cells, paging broadcasts from more than one of these servicing cells are received and undergo only a limited amount of processing before being stored for use in subsequent processing that may be performed later. This partitioned processing allows the turning off of certain components that are not needed and/or no longer needed for determining the system frame numbers associated with various servicing cells to effectuate timing synchronization. Certain modules within such a wireless communication device may perform processing using the full capabilities of the wireless communication device to generate initially processed signal, and then after such signals are stored, then only partial processing capability of the wireless communication device may be employed, even though perhaps being slower, to complete the processing.Type: ApplicationFiled: April 24, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventors: Vikas Paliwal, Xiaoxin Qiu, Zhijun (Nick) Gong, Rami Mehio, Arun K. Visvanath
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Publication number: 20100217590Abstract: A system and method for performing speaker localization is described. The system and method utilizes speaker recognition to provide an estimate of the direction of arrival (DOA) of speech sound waves emanating from a desired speaker with respect to a microphone array included in the system. Candidate DOA estimates may be preselected or generated by one or more other DOA estimation techniques. The system and method is suited to support steerable beamforming as well as other applications that utilize or benefit from DOA estimation. The system and method provides robust performance even in systems and devices having small microphone arrays and thus may advantageously be implemented to steer a beamformer in a cellular telephone or other mobile telephony terminal featuring a speakerphone mode.Type: ApplicationFiled: February 24, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventors: Elias Nemer, Jes Thyssen
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Publication number: 20100217912Abstract: A handheld computing device includes a handheld memory for storing at least one handheld application. A handheld processing module executes the handheld application. A physical docking interface facilitates co-processing with an extended processing module of an extended computer unit in a physical docked mode, when the handheld computing unit is coupled to the extended computer unit via the physical docking interface. A quasi docking interface facilitates co-processing with the extended processing module in a quasi docked mode when the handheld computing unit is coupled to the extended computer unit via the quasi docking interface. A graphical user interface presents a selectable quasi docking interface graphic for display to a user and responds to a user selection of the selectable quasi docking interface graphic by generating a quasi docking command. The quasi docking interface couples the handheld computing unit to the extended computing unit in response to the quasi docking command.Type: ApplicationFiled: February 26, 2009Publication date: August 26, 2010Applicant: BROADCOM CORPORATIONInventor: Ahmadreza (Reza) Rofougaran
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Publication number: 20100218011Abstract: A system and method for energy savings through emulation of wake on LAN (WoL) in energy efficient Ethernet networks. An intermediary device between a computing device and a network can be alerted that the computing device has entered an energy saving state with wake on LAN (WoL) enabled. The intermediary device can transition the client interface that supports the computing device into an energy saving state and emulate the WoL function of the computing device by listening for a WoL message destined for the computing device. Upon receipt of a WoL message destined for the computing device, the intermediary device can transition the client interface back to an active state then transmit the received WoL message to the computing device.Type: ApplicationFiled: June 16, 2009Publication date: August 26, 2010Applicant: Broadcom CorporationInventors: Wael William Diab, Steven Lindsay
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Patent number: 7782094Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. The PSE controller includes a resistorless switch to measure the current. The resistorless switch includes a sense transistor and a current mirror to allowing the PSE controller to calculate the current based upon a replica current.Type: GrantFiled: January 17, 2007Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventor: Pieter Vorenkamp
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Patent number: 7782855Abstract: Upstream requests such a bandwidth requests, are processed by CMTS out of order on a priority basis to reduce latency in responding to the request. Specifically, a cable modem termination system (CMTS) is connected to a plurality of cable modems by a cable plant. The CMTS has a burst receiver adapted to be connected to the cable plant to process upstream data packet units and bandwidth requests transmitted by the cable modems. Each packet includes a header that uniquely distinguishes the bandwidth requests from other data types. Packet data units are arranged in a first memory queue. Bandwidth requests are arranged in a second memory queue. The headers of the packets processed by the burst receiver are inspected as they arrive at the CMTS to determine if the packets are packet data units or bandwidth requests. Packet data units are routed to the first memory queue. Bandwidth requests are routed to the second memory queue.Type: GrantFiled: May 4, 2005Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Lisa V. Denney, Anders Hebsgaard, Robert J. Lee
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Patent number: 7781266Abstract: A method of assembling an IC device package is provided. A leadframe is formed. At least one IC die is attached to a die attach pad portion of the leadframe. Wire bonds are coupled between the IC die and the leadframe. A cap is attached to the leadframe. A second surface of the cap includes a cavity formed therein. The cap and leadframe form an enclosure structure that substantially encloses the at least one IC die. An encapsulating material is applied to encapsulate at least the IC die. A perimeter support ring portion of the leadframe is trimmed.Type: GrantFiled: August 4, 2009Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Sam Ziqun Zhao, Reza-ur Rahman Khan
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Patent number: 7781882Abstract: An integrated circuit (IC) package is provided. The IC package includes a substantially planar substrate having a plurality of contact pads on a first surface electrically connected through the substrate to a plurality of solder ball pads on a second surface of the substrate, an IC die having a first surface mounted to the first surface of the substrate, and a heat sink assembly coupled to a second surface of the IC die and to a first contact pad on the first surface of the substrate to provide a thermal path from the IC die to the first surface of the substrate. The IC die has a plurality of I/O pads electrically connected to the plurality of contact pads on the first surface of the substrate. The IC die is mounted to the first surface of the substrate in a flip chip orientation.Type: GrantFiled: July 2, 2009Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Chonghua Zhong, Reza-ur Rahman Khan
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Patent number: 7783251Abstract: An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.Type: GrantFiled: July 31, 2008Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Ahmadreza Rofougaran, Maryam Rofougaran, Meng-An Pan, Hung-Ming Chien, Shahla Khorram, William T. Colleran, Jacob Rael, Masood Syed, Brima Ibrahim, Stephen Wu, Shervin Moloudi