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公开(公告)号：US10812829B2
公开(公告)日：2020-10-20
申请号：US14044599
申请日：2013-10-02
Applicant: Broadcom Corporation
Inventor： Alexander Garland MacInnis
IPC: H04N19/61
Abstract: A coder (e.g., an encoder or decoder) implements coding of two dimensional blocks of image data using two dimensional differential pulse code modulation (2D DPCM). The coder may switch between DPCM and other types of coding, such as transform coding on a block by block basis. The 2D DPCM may obtain a reconstructed pixel within the two dimensional bloc and code a second, different, pixel within the two dimensional block using the reconstructed pixel. The coder may also create a bitstream of entropy encoded residuals that supports hybrid implicit/explicit specification of coding parameters.
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公开(公告)号：US10554571B2
公开(公告)日：2020-02-04
申请号：US15238980
申请日：2016-08-17
Applicant: Broadcom Corporation
Inventor： Rajesh Shankarrao Mamidwar , Anand Tongle
IPC: H04L25/14 , H04L12/863 , H04L29/06 , H04L1/18
Abstract: A stream at a source device may be transmitted over multiple channels. At the input of the channels the packets from the stream may be grouped into chunks. Informational packets may be appended to the chunks. The informational packets may include sequencing information for the chunks and packet-to-packet timing information. The chunks may then be distributed over the multiple channels. After transmission over the channels, the informational packets may be extracted from the chunks. Reconstruction circuitry, at the destination device, may determine the sequence of the chunks at the source device based on the sequencing information. The reconstruction circuitry may also determine relative timings of the packets within the single stream based on the packet-to-packet timing information. The packets may be released from buffers in accord with the determined packet-to-packet timing information and the sequencing information to recreate the relative timings within the single stream at the destination device.
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公开(公告)号：US10469408B2
公开(公告)日：2019-11-05
申请号：US14832837
申请日：2015-08-21
Applicant: BROADCOM CORPORATION
Inventor： Nariman Yousefi , Yongbum Kim , John Walley , Sherman (Xuemin) Chen , Wael W. Diab , Nicholas Ilyadis
IPC: H04N19/102 , H04L12/911 , H04W4/44 , H04W4/46 , H04N7/18 , G07C5/08 , H04W4/04 , H04L12/947 , H04L12/865 , B60R16/03 , H04L12/917 , H04L12/741 , H04L12/54 , G06F1/26 , H04L29/08 , H04W72/08 , H04W72/10 , G08G1/16 , H04L12/46 , H04L12/851 , H04W24/08 , H04W28/08 , B60R16/023 , H04L29/06 , H04B1/3822 , H04W4/40 , H04W88/02 , G06F7/76 , H04L12/10
Abstract: A system for performing multi-level video processing within a vehicle includes a pre-processing module for determining an encoding mode and enabling one or more levels of encoding based on the encoding mode. The pre-processing module further receives a video stream from a camera attached to the vehicle via a vehicular communication network and encodes the video stream based on the encoding mode to produce a packet stream output. The system further includes a video decoder for receiving the packet stream output and decoding the packet stream output in accordance with the encoding mode to produce a decoded video output.
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公开(公告)号：US10462069B2
公开(公告)日：2019-10-29
申请号：US14679942
申请日：2015-04-06
Applicant: BROADCOM CORPORATION
Inventor： Yongbum Kim , Kevin Brown
IPC: H04L12/26 , H04L12/927 , H04L12/931 , H04L12/40 , H04L12/939 , H04L29/08
Abstract: Systems and methods for implementing FlexRay communications between FlexRay nodes using Ethernet are provided. An Ethernet switch includes ports, each of which receives an Ethernet data packet from a respective FlexRay node. Each Ethernet data packet includes a FlexRay message, which includes at least one of a data frame and a frame identification. The Ethernet switch also includes a controller module that is configured to route the Ethernet data packets to their respective destinations.
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公开(公告)号：US10459089B2
公开(公告)日：2019-10-29
申请号：US15263086
申请日：2016-09-12
Applicant: BROADCOM CORPORATION
Inventor： Frank Stephen Tromp Van Diggelen , Steve Graham Mole , Vladimir Belov
Abstract: A device implementing an adaptive positioning system may include at least one processor that is configured to concurrently implement a first positioning system that generates first positioning information items and a second positioning system that generates second positioning information items. The processor may be configured to buffer the second positioning information items generated by the second positioning system and to determine a position estimation for the device based on the first positioning information items generated by the first positioning system. The processor may be configured to detect a degradation in a quality of the first positioning system. The processor may be configured to, in response to detecting the degradation in the quality of the first positioning system, determine the position estimation for the device based at least in part on at least one of the buffered second positioning information items generated by the second positioning system.
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Patent Agency Ranking
公开(公告)号：US10396957B2
公开(公告)日：2019-08-27
申请号：US14865425
申请日：2015-09-25
Applicant: BROADCOM CORPORATION
Inventor： Ron Porat
Abstract: Pilot tones are included within symbols (e.g., orthogonal frequency division multiplexing (OFDM) symbols) transmitted between wireless communication devices. The pilot tones occupy fewer than all tone locations in any given symbol, and the pilot tones occupy different respective locations within different symbols. Generally, these traveling pilots are assigned to different respective tone locations in different symbols. In total, the pilot tones did not cover every single tone location within the symbols used to convey information between devices. Considering for example, when pilots occupy fewer than all tone locations, even among multiple symbols, a device may perform interpolation to generate a pilot tone estimate corresponding to a tone location not occupied by pilot tone within any symbol. Also, power or magnitude of the pilot tones themselves may be boosted or amplified relative to power magnitude of other tones within such symbols.
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公开(公告)号：US10382228B2
公开(公告)日：2019-08-13
申请号：US14728331
申请日：2015-06-02
Applicant: BROADCOM CORPORATION
Inventor： Ching-Liang Huang
Abstract: In the subject system, a customer virtual local network (VLAN) tag is protected using, for example, media access control security (MACSec). MACSec authentication is performed on a packet by including the VLAN tag in an integrity check value (ICV) computation. When a packet is received from an Ethernet Virtual Connection (EVC) at an ingress port of the subject system, a remote site is identified and an associated VLAN tag is determined based on the identified remote site and a VLAN tag associated with the packet. The subject system may perform VLAN tag mapping to account for changes in a VLAN tag across EVCs. An ICV is computed based on the determined VLAN tag and compared with an ICV stored in the received packet. The integrity check passes when the computed ICV matches the stored ICV and fails when the computed ICV does not match the stored ICV.
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公开(公告)号：US10291785B2
公开(公告)日：2019-05-14
申请号：US15285028
申请日：2016-10-04
Applicant: Broadcom Corporation
Inventor： Michael Eugene Locke
Abstract: A source node may send a first data unit to a destination node. To send the first data unit, the source node may transmit a modulation pattern over a transmission medium. In some cases, particular data units may correspond to modulation patterns with features that cause errors in transmission. The source node may receive an indication of an error from the destination node. To avoid repeated errors the retransmission, coding circuitry at the source node may alter data within the first data unit to generate a retransmission data unit. The alteration may result in the retransmission data unit corresponding to a modulation pattern different from that of the first data unit. The new modulation pattern may lack the error causing features and reduce the chance of repeated errors.
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公开(公告)号：US10263652B2
公开(公告)日：2019-04-16
申请号：US15199692
申请日：2016-06-30
Applicant: Broadcom Corporation
Inventor： Bevin George Perumana , Saikat Sarkar , Tirdad Sowlati
Abstract: Systems and methods are provided for millimeter-wave (MMW) communication, the system includes a transceiver chip to generate and to receive signals. An interface is used to communicate the signals between the transceiver chip and one or more active antenna modules. The signals include modulated MMW signals and control signals. The transceiver chip includes baseband circuitry, up and down conversion mixers, and RF front-end circuitry. An active antenna module receives a first modulated MMW signal from the interface for transmission via antennas and to receive a second modulated MMW signal from the antennas for transmission through the interface to the transceiver chip.
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公开(公告)号：US10256865B2
公开(公告)日：2019-04-09
申请号：US15338231
申请日：2016-10-28
Applicant: Broadcom Corporation
Inventor： Bevin George Perumana , Tirdad Sowlati , Saikat Sarkar , Seunghwan Yoon
Abstract: A bidirectional time-division duplexing transceiver circuit includes a first and a second bidirectional phase-shift circuit, and a bidirectional amplifier circuit including a first amplifier circuit and a second amplifier circuit. The first amplifier circuit and the second amplifier circuit are coupled via double-pole-double-throw (DPDT) switches to radio-frequency (RF) antennas and the first and the second bidirectional phase-shift circuits. The (DPDT) switches enable the first amplifier circuit and the second amplifier circuit to be operable simultaneously as transmit (TX) path amplifiers in a first time slot and as a receive (RX) path amplifiers in a second time slot.
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