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    Uneven segmentation of data packets to reduce retransmission latency
    6.
    发明公开
    Uneven segmentation of data packets to reduce retransmission latency 审中-公开

    公开(公告)号：US20240348370A1

    公开(公告)日：2024-10-17

    申请号：US18353571

    申请日：2023-07-17

    Applicant: Valens Semiconductor Ltd.

    Inventor： Elad Kaplan

    IPC: H04L1/08 ,  H04L1/00 ,  H04L43/106

    CPC classification number: H04L1/08 ,  H04L1/0041 ,  H04L43/106

    Abstract: Methods and systems for uneven segmentation of data packets to reduce retransmission penalty accumulated as a result of having to retransmit one or more of the last segments. The method includes segmenting a data packet into segments of different sizes, with generally larger segments in the first half and smaller segments in the second half, and transmitting the segments over an intermediate communication link to another node. The transmission of the segments begins before receiving the entire data packet, and retransmission of a corrupted segment takes place as soon as an indication indicative of the corrupted segment is detected.

    Systems and methods for communicating using nested low density parity check codes
    7.
    发明授权
    Systems and methods for communicating using nested low density parity check codes 有权

    公开(公告)号：US12119932B2

    公开(公告)日：2024-10-15

    申请号：US17146343

    申请日：2021-01-11

    Applicant: California Institute of Technology

    Inventor： Michelle Effros ,  Yuxin Liu

    IPC: H04L1/00 ,  H03M13/11

    CPC classification number: H04L1/0057 ,  H03M13/1105 ,  H03M13/1148 ,  H04L1/0041

    Abstract: Systems and methods in accordance with various embodiments of the invention enable communicating using nested Low Density Parity Check (LDPC) codes. A nested LDPC code is an LDPC code having a full blocklength, where shorter blocklengths of the nested LDPC code can be utilized as shorter blocklength LDPC codes. In certain embodiments, a transmitter utilizes a nested LDPC code to communicate via a point-to-point connection. In several embodiments, multiple transmitters utilize nested LDPC codes to communicate simultaneously via a Random Access Channel. One embodiment includes a transmitter capable of encoding a message as symbols using a nested LDPC code until a feedback message indicating an end of epoch message is received. A receiver can determine whether a decoding rule is satisfied at predetermined decode times and transmit an end of epoch message when the decoder can decode a message based upon the nested LDPC code.

    Selective forward error correction for spatial audio codecs
    10.
    发明授权
    Selective forward error correction for spatial audio codecs 有权

    公开(公告)号：US12046247B2

    公开(公告)日：2024-07-23

    申请号：US17702698

    申请日：2022-03-23

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Shen Huang ,  Michael Eckert ,  Glenn N. Dickins

    IPC: G10L19/005 ,  G10L19/008 ,  G10L19/02 ,  H04L1/00 ,  H04S3/00

    CPC classification number: G10L19/005 ,  G10L19/008 ,  G10L19/0212 ,  H04L1/0011 ,  H04L1/0041 ,  H04S3/008 ,  H04S2400/01

    Abstract: Systems and methods for providing forward error correction for a multi-channel audio signal are described. Blocks of an audio stream are buffered into a frame. A transformation can be applied that compacts the energy of each block into a plurality of transformed channels. The energy compaction transform may compact the most energy of a block into the first transformed channel and to compact decreasing amounts of energy into each subsequent transformed channel. The transformed frame may be encoded using any suitable codec and transmitted in a packet over a network. Improved forward error correction may be provided by attaching a low bit rate encoding of the first transformed channel to a subsequent packet. To reconstruct a lost packet, the low bit rate encoding of the first channel for the lost packet may be combined with a packet loss concealment version of the other channels, constructed from a previously-received packet.

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