公开(公告)号：US10331827B1

公开(公告)日：2019-06-25

申请号：US13929536

申请日：2013-06-27

Applicant: Altera Corporation

Inventor： Masashi Shimanouchi ,  Peng Li ,  Hsinho Wu

IPC: G06F17/50 ,  H04B1/00 ,  H04B3/00

Abstract: A method for performing simulation includes determining whether a model is available for a channel. A model for the channel is generated using signal attenuation parameters provided by a user in response to determining that the model is unavailable. The model includes crosstalk characteristics from crosstalk parameters provided by the user.

公开(公告)号：US09178542B1

公开(公告)日：2015-11-03

申请号：US14548606

申请日：2014-11-20

Applicant: ALTERA CORPORATION

Inventor： Masashi Shimanouchi ,  Peng Li ,  Hsinho Wu

IPC: H04L25/49 ,  H04B1/04 ,  H04L25/03

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B2001/0425 ,  H04L25/03012 ,  H04L25/03343

Abstract: One embodiment relates to an apparatus for generating a data output signal. The apparatus includes a pre-emphasis filter and an edge-shape filter. The edge-shape filter includes a non-linearity correction stage that applies a non-linearity correction and a linear filter that applies linear filtering. Another embodiment relates to a method of generating tap coefficients for a pre-emphasis filter. A summation of products of tap coefficients and time-shifted base single-bit response waveforms is used to form a first waveform, and a measured single-bit response waveform is used to provide a second waveform. The tap coefficients are adjusted to fit the first waveform to the second waveform. Other embodiments, aspects, and features are also disclosed.

Abstract translation: 一个实施例涉及用于产生数据输出信号的装置。 该装置包括预加重滤波器和边缘形滤波器。 边缘形状滤波器包括应用非线性校正的非线性校正级和应用线性滤波的线性滤波器。 另一实施例涉及一种为预加重滤波器生成抽头系数的方法。 使用抽头系数和时移基本单位响应波形的乘积的和来形成第一波形，并且使用测量的单位响应波形来提供第二波形。 抽头系数被调整以将第一波形适合于第二波形。 还公开了其它实施例，方面和特征。

公开(公告)号：US09929803B1

公开(公告)日：2018-03-27

申请号：US15278211

申请日：2016-09-28

Applicant: Altera Corporation

Inventor： Hsinho Wu ,  Mike Peng Li ,  Masashi Shimanouchi

IPC: H04B10/08 ,  H04B10/079 ,  H04L29/06

CPC classification number: H04L69/18 ,  H04B10/07955

Abstract: Systems and methods related to the configuration of data communication links between electrical devices are described. The methods described may consider power efficiency of the data communication link along with bit error rate, latency, data rate, and other specifications. Methods discussed may lead to changes in the data communication link protocol, use of error correction coding scheme, the power consumption and the selection of features employed by the data communication link. Electronic systems capable of implementing the discussed methods may be incorporated in the circuitry of the electrical devices. Methods discussed may change the configuration the data communication link features during the operation of the electrical devices and/or the data communication link.

公开(公告)号：US09596160B1

公开(公告)日：2017-03-14

申请号：US14529912

申请日：2014-10-31

Applicant: ALTERA CORPORATION

Inventor： Peng Li ,  Masashi Shimanouchi ,  Hsinho Wu

IPC: H04L12/26

CPC classification number: H04L43/087 ,  H04L1/205

Abstract: One embodiment of the present invention relates to a method for built-in self-measurement (BISM) of jitter components. A built-in self-measurement controller on the host integrated circuit (and, in some cases, a slave controller on a partner integrated circuit) may be used to control various switches to form various loopback circuits. A calibrated jittery data pattern is transmitted through each of the various loopback circuits. On-die instrumentation (ODI) circuitry may then be used to measure intrinsic jitter components for each loopback circuit via data representations such as eye-diagrams, or jitter histograms, or bit error ratio bathtub curves. The intrinsic jitter for link components (i.e. the jitter components such as deterministic jitter (DJ), random jitter (RJ), total jitter (TJ)) may then be determined based on the measured intrinsic jitters for the various loopback circuits. Other embodiments and features are also disclosed.

Abstract translation: 本发明的一个实施例涉及一种用于抖动分量的内置自测量（BISM）的方法。 可以使用主机集成电路（以及在某些情况下，伙伴集成电路上的从控制器）上的内置自测量控制器来控制各种开关以形成各种环回电路。 校准的抖动数据模式通过各个环回电路中的每一个发送。 然后可以使用管芯仪表（ODI）电路来通过数据表示（例如眼图或抖动直方图）或误码率浴缸曲线来测量每个环回电路的固有抖动分量。 然后可以基于所测量的各种环回电路的本征抖动来确定链路组件的固有抖动（即抖动分量，例如确定性抖动（DJ），随机抖动（RJ），总抖动（TJ））。 还公开了其它实施例和特征。

公开(公告)号：US09237044B1

公开(公告)日：2016-01-12

申请号：US13896518

申请日：2013-05-17

Applicant: ALTERA CORPORATION

Inventor： Hsinho Wu ,  Masashi Shimanouchi ,  Peng Li

IPC: H03H7/30 ,  H03K5/159 ,  H04L25/03

CPC classification number: H04L25/03343 ,  H04L25/03019 ,  H04L2025/03471 ,  H04L2025/03636 ,  H04L2025/03802

Abstract: One embodiment relates to a computer-implemented method that selects one of at least three procedures to determine equalization settings jointly for a transmitter and a receiver. A first process may be used if the end-of-channel signal-to-noise ratio (SNR) is greater than an SNR threshold and the equalization capability of the transmitter is greater than the equalization capability of the receiver. A second process may be used if the end-of-channel SNR is greater than the SNR threshold and the equalization capability of the transmitter is less than the equalization capability of the receiver. A third process may be used if the end-of-channel SNR is less than the SNR threshold. Other embodiments and features are also disclosed.

Abstract translation: 一个实施例涉及一种计算机实现的方法，其选择为发射机和接收机联合确定均衡设置的至少三个过程之一。 如果信道信道信噪比（SNR）大于SNR阈值并且发射机的均衡能力大于接收机的均衡能力，则可以使用第一过程。 如果信道信道SNR大于SNR阈值并且发射机的均衡能力小于接收机的均衡能力，则可以使用第二过程。 如果信道信道的SNR小于SNR阈值，则可以使用第三过程。 还公开了其它实施例和特征。