公开(公告)号：US09712442B2

公开(公告)日：2017-07-18

申请号：US14072744

申请日：2013-11-05

Applicant: BROADCOM CORPORATION

Inventor： David Wu ,  Darren Duane Neuman ,  Flaviu Dorin Turean ,  Rajesh Shankarrao Mamidwar ,  Anand Tongle ,  Predrag Kostic

IPC: H04L12/879 ,  H04L12/861 ,  H04L12/747

CPC classification number: H04L45/742 ,  H04L49/901 ,  H04L49/9042 ,  H04L49/9047 ,  H04L49/9078

Abstract: A system for efficient memory bandwidth utilization may include a depacketizer, a packetizer, and a processor core. The depacketizer may generate header information items from received packets, where the header information items include sufficient information for the processor core to process the packets without accessing the payloads from off-chip memory. The depacketizer may accumulate multiple payloads and may write the multiple payloads to the off-chip memory in a single memory transaction when a threshold amount of the payloads have been accumulated. The processor core may receive the header information items and may generate a single descriptor for accessing multiple payloads corresponding to the header information items from the off-chip memory. The packetizer may generate a header for each payload based at least on on-chip information and without accessing off-chip memory. Thus, the subject system provides efficient memory bandwidth utilization, e.g. at least by reducing the number of off-chip memory accesses.

公开(公告)号：US09137285B2

公开(公告)日：2015-09-15

申请号：US14091280

申请日：2013-11-26

Applicant: BROADCOM CORPORATION

Inventor： Rajesh Shankarrao Mamidwar ,  Sanjeev Sood ,  Anand Tongle ,  David Wu ,  Prashant Katre

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08 ,  H04L12/70 ,  H04L12/933 ,  H04L12/861 ,  H04L1/18 ,  H04L12/883 ,  H04L12/64 ,  H04L12/879

CPC classification number: H04L65/604 ,  H04L1/1874 ,  H04L49/103 ,  H04L49/206 ,  H04L49/35 ,  H04L49/9021 ,  H04L49/9026 ,  H04L49/9036 ,  H04L49/9047 ,  H04L65/607 ,  H04L67/32 ,  H04L2012/5678 ,  H04L2012/5681 ,  H04L2012/6489

Abstract: A system for adaptive audio video (AV) stream processing may include at least one processor and a switch device. The switch device may be configured to route AV traffic to the processor, and to receive AV traffic from the processor and provide the AV traffic to a client device via one or more channels. The processor may monitor a transcoder buffer depth and depths of buffers associated with channels over which the AV traffic is being transmitted. The processor may adaptively modify one or more attributes associated with the AV traffic based at least on the monitored buffer depths. For example, the processor may adaptively adjust a bit rate associated with transcoding the AV traffic based at least on the transcoder buffer depth. The processor may utilize the depths of the buffers associated with the channels to adaptively adjust the amount of AV traffic provided for transmission over the channels.

Abstract translation: 用于自适应音频视频（AV）流处理的系统可以包括至少一个处理器和交换设备。 交换设备可以被配置为将AV业务路由到处理器，并且从处理器接收AV业务，并且经由一个或多个信道将AV业务提供给客户端设备。 处理器可以监视代码转换器缓冲器的深度和与正在发送AV业务的信道相关联的缓冲器的深度。 至少基于所监视的缓冲器深度，处理器可以自适应地修改与AV业务相关联的一个或多个属性。 例如，处理器可以至少基于代码转换器缓冲器深度来自适应地调整与AV业务的代码转换相关联的比特率。 处理器可以利用与信道相关联的缓冲器的深度来自适应地调整提供用于通过信道传输的AV业务量。

公开(公告)号：US10404624B2

公开(公告)日：2019-09-03

申请号：US14072745

申请日：2013-11-05

Applicant: BROADCOM CORPORATION

Inventor： Predrag Kostic ,  Darren Duane Neuman ,  David Wu ,  Anand Tongle ,  Rajesh Shankarrao Mamidwar ,  Milomir Aleksic

IPC: G06F15/173 ,  H04L12/931

Abstract: A system for lossless switching of traffic in a network device may be implemented when a network switch is integrated into a gateway device, or with any other data source. A processor of the gateway device may receive queue depth information for queues of the network switch. The processor may prevent data from being transmitted to congested queues of the network switch, while allowing data to be transmitted to uncongested queues. In this manner, data loss can be avoided through the network switch for data sourced from the gateway device, such as audio-video data retrieved from a hard drive, audio-video data received from a tuner, etc. Furthermore, re-transmission at higher layers can be reduced. Since the subject system observes congestion for each individual queue, only traffic destined to that particular, congested, queue is affected, e.g. paused. Traffic to non-congested queues is not affected, regardless of traffic class or egress port.

公开(公告)号：US09602568B2

公开(公告)日：2017-03-21

申请号：US14822816

申请日：2015-08-10

Applicant: BROADCOM CORPORATION

Inventor： Rajesh Shankarrao Mamidwar ,  Sanjeev Sood ,  Anand Tongle ,  David Wu ,  Prashant Katre

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08 ,  H04L12/931 ,  H04L12/70 ,  H04L12/933 ,  H04L12/861 ,  H04L1/18 ,  H04L12/883 ,  H04L12/64 ,  H04L12/879

CPC classification number: H04L65/604 ,  H04L1/1874 ,  H04L49/103 ,  H04L49/206 ,  H04L49/35 ,  H04L49/9021 ,  H04L49/9026 ,  H04L49/9036 ,  H04L49/9047 ,  H04L65/607 ,  H04L67/32 ,  H04L2012/5678 ,  H04L2012/5681 ,  H04L2012/6489

Abstract: A system for adaptive audio video (AV) stream processing may include at least one processor and a switch device. The switch device may be configured to route AV traffic to the processor, and to receive AV traffic from the processor and provide the AV traffic to a client device via one or more channels. The processor may monitor a transcoder buffer depth and depths of buffers associated with channels over which the AV traffic is being transmitted. The processor may adaptively modify one or more attributes associated with the AV traffic based at least on the monitored buffer depths. For example, the processor may adaptively adjust a bit rate associated with transcoding the AV traffic based at least on the transcoder buffer depth. The processor may utilize the depths of the buffers associated with the channels to adaptively adjust the amount of AV traffic provided for transmission over the channels.

公开(公告)号：US09426079B2

公开(公告)日：2016-08-23

申请号：US14042655

申请日：2013-09-30

Applicant: Broadcom Corporation

Inventor： David Wu ,  Darren Duane Neuman ,  Flaviu Dorin Turean ,  Rajesh Shankarrao Mamidwar ,  Anand Tongle ,  Sanjeev Sood

IPC: H04L12/807

CPC classification number: H04L47/27

Abstract: A method of handling retransmission and memory consumption tracking of data packets includes storing data packets from different data channels in respective transmitter ring buffers allocated to the data channels when the data packets are not marked for retransmission, and facilitating retransmission of data packets from a specified ring buffer corresponding to a retransmission sequence number. The method also may include storing received data packets out of sequence in respective receiver ring buffers, marking a descriptor indicating a tail location of the stored data packets, and reclaiming memory space in the ring buffer based on the marked descriptor. The method may include storing a payload address associated with received data packets, marking a descriptor associated with the payload address to indicate the stored data packets have been consumed for processing, and reclaiming memory space when a register contains an indication of the stored payload address based on the marked descriptor.

Abstract translation: 一种处理数据分组的重传和存储器消耗跟踪的方法包括：当数据分组未被标记用于重传时，将分配给数据信道的各个发射机环形缓冲器中的不同数据信道的数据分组存储，并且便于从指定的振铃 对应于重传序列号的缓冲区。 该方法还可以包括将接收到的数据分组按顺序存储在相应的接收机环形缓冲器中，标记指示存储的数据分组的尾部位置的描述符，以及基于标记的描述符回收环形缓冲器中的存储器空间。 该方法可以包括存储与接收到的数据分组相关联的有效载荷地址，标记与有效载荷地址相关联的描述符以指示所存储的数据分组已被消耗用于处理，以及当寄存器包含基于所存储的有效载荷地址的指示时，回收存储器空间 在标记描述符上。