公开(公告)号：US08938014B1

公开(公告)日：2015-01-20

申请号：US14020263

申请日：2013-09-06

Applicant: Marvell International Ltd.

Inventor： Gang Wang ,  Wei Zhou ,  Chee Hoe Chu ,  Po-Chien Chang

IPC: H03K7/08 ,  H04L25/49

CPC classification number: H04L25/4902 ,  H04L7/0008 ,  H04L27/24

Abstract: A serializer/deserializer for a network device includes a data module configured to generate parallel data and side band data. A serializer is configured to convert the parallel data to serialized data for transmission over a communication channel, wherein the serialized data includes a serial data waveform. A side band transmission module is configured to generate a clock signal, inject the clock signal with side band data to generate a modulated clock signal, and apply the modulated clock signal to the serialized data to generate a modified serial data waveform. The modified serial data waveform includes the serialized data and the side band data and includes pulses with an increased pulse width and/or a decreased pulse width with respect to the serial data waveform. The serializer is configured to transmit, over the communication channel, the modified serial data waveform including the serialized data and the side band data.

Abstract translation: 用于网络设备的串行器/解串器包括被配置为产生并行数据和边带数据的数据模块。 串行器被配置为将并行数据转换成串行数据以便在通信信道上传输，其中串行化数据包括串行数据波形。 边带传输模块被配置为产生时钟信号，用时钟信号注入边带数据以产生调制时钟信号，并将经调制的时钟信号施加到串行数据以产生经修改的串行数据波形。 修改的串行数据波形包括串行数据和边带数据，并且包括相对于串行数据波形具有增加的脉冲宽度和/或减小的脉冲宽度的脉冲。 串行器被配置为在通信信道上发送包括串行数据和边带数据的经修改的串行数据波形。

公开(公告)号：US09608905B1

公开(公告)日：2017-03-28

申请号：US14333444

申请日：2014-07-16

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jin Zhang ,  Xiaolin Che ,  Yuji Meng ,  Yicheng Chen ,  Gang Wang ,  Kok-Wui Cheong

IPC: H04L12/741 ,  H04L27/26 ,  H04W74/08 ,  H04W56/00 ,  H04L1/00 ,  H04L12/28

CPC classification number: H04L27/265 ,  H04L1/0001 ,  H04L27/2627 ,  H04L27/2662 ,  H04L47/2483 ,  H04L2012/2843 ,  H04W56/0005 ,  H04W74/0808

Abstract: A packet is detected in an input data stream. A stream of fast Fourier transform (FFT) blocks are scanned for a plurality of candidate symbols for a preamble of the packet. The stream of FFT blocks correspond to the input data stream. A symbol boundary is detected between adjacent candidate symbols of the plurality of candidate symbols. The FFT blocks are aligned with the symbol boundary. A transition boundary is detected between different adjacent candidate symbols of the preamble based on the detected symbol boundary. A packet detection indication is provided based on the detected transition boundary.