公开(公告)号：US09557760B1

公开(公告)日：2017-01-31

申请号：US14925686

申请日：2015-10-28

申请人： KANDOU LABS S.A.

发明人： Armin Tajalli

IPC分类号： G05F3/26

CPC分类号： G05F3/262

摘要： A phase control circuit comprising a differential current generator having a differential output node configured to provide a differential drive current and a current conversion circuit connected to the differential output node configured to receive the differential drive current through saturated input Field-Effect Transistors (FETs), the saturated input FETs connected to triode mirroring FETs, the triode mirroring FETs configured to generate linearized current drive signals through first and second output drive nodes to drive a phase interpolator circuit.

摘要翻译： 一种相位控制电路，包括具有差分输出节点的差分电流发生器，所述差分输出节点被配置为提供差分驱动电流，以及连接到所述差分输出节点的电流转换电路，所述差分输出节点被配置为通过饱和输入场效应晶体管（FET） 连接到三极管镜像FET的饱和输入FET，三极管镜像FET被配置为通过第一和第二输出驱动节点产生线性化的电流驱动信号，以驱动相位内插器电路。

公开(公告)号：US09524106B1

公开(公告)日：2016-12-20

申请号：US15176081

申请日：2016-06-07

申请人： Kandou Labs, S.A.

发明人： Harm Cronie ,  Amin Shokrollahi

IPC分类号： G11C29/00 ,  G06F3/06 ,  G11C11/4096 ,  G06F11/10 ,  G11C29/52 ,  H03M13/15 ,  H03M13/19

CPC分类号： G11C7/1072 ,  G06F3/0604 ,  G06F3/0608 ,  G06F3/0629 ,  G06F3/0679 ,  G06F11/1068 ,  G06F12/0246 ,  G11C7/1006 ,  G11C7/12 ,  G11C11/4076 ,  G11C11/4096 ,  G11C11/5621 ,  G11C11/565 ,  G11C29/52 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/1505 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/19

摘要： A memory circuit, such as an embedded DRAM array, stores information as groups of bits or data using information coding in storage and retrieval data, instead of each bit being stored separately. Write data words can be mapped to storage format words that are stored and defined by a Hadamard matrix. The storage format word is stored as charge levels in an addressable memory location. For retrieving stored data, charge levels are read from the storage cells and interpreted to a valid storage format word. Hadamard code maximal likelihood decoding can be used to derive a read data word corresponding to a previously written write data word. The write data word is then output as the result of a read of the selected addressable location, or a portion thereof. The mapping can be two or more Hadamard matrix mappings concatenated for each of a plurality of storage format words.

公开(公告)号：US09362962B2

公开(公告)日：2016-06-07

申请号：US14014082

申请日：2013-08-29

申请人： Kandou Labs, S.A.

发明人： Richard Simpson ,  Andrew Kevin John Stewart ,  Brian Holden ,  Amin Shokrollahi

IPC分类号： H04L25/06 ,  H04L25/10 ,  H04B1/06

CPC分类号： H04B1/06 ,  G06F13/385 ,  Y02D10/14 ,  Y02D10/151

摘要： In a high-impedance communications interface, driver energy consumption is proportional to the number of signal transitions. For signals having three or more distinct levels, it is possible for a signal driver to salvage energy from some downward signal transitions and reuse it on some subsequent upward signal transitions. To facilitate this energy-conserving behavior, communication is performed using group signaling over sets of wires using a vector signaling code, with the design and use of the vector signaling code insuring that energy availability is balanced with energy demand.

摘要翻译： 在高阻抗通信接口中，驱动器的能量消耗与信号转换的数量成正比。 对于具有三个或更多个不同等级的信号，信号驱动器可以从一些向下的信号转换中挽救能量并且在一些后续的向上信号转换上重用它。 为了促进这种节能行为，使用矢量信令代码，使用组合信令对集合信号进行通信，同时设计和使用矢量信令码，确保能量可用性与能量需求平衡。

公开(公告)号：US09288082B1

公开(公告)日：2016-03-15

申请号：US13895206

申请日：2013-05-15

申请人： Kandou Labs, S.A.

发明人： Roger Ulrich ,  Peter Hunt

IPC分类号： H04L27/06 ,  H04L27/00 ,  H04L25/02

CPC分类号： H04L25/4917 ,  H04L25/02 ,  H04L25/0274 ,  H04L25/0294 ,  H04L25/03006 ,  H04L25/03878 ,  H04L25/08 ,  H04L25/14 ,  H04L2025/03363 ,  H04L2025/03426 ,  H04L2025/03789

摘要： In a detection circuit, inputs correspond to received indications of vector signaling code words received by a first integrated circuit from a second integrated circuit. With four inputs, the circuit compares a first pair to obtain a first difference result and compares a second pair, disjoint from the first pair, to obtain a second difference result. The first and second difference results are then summed to form an output function. A system might use a plurality of such detection circuits to arrive at an input word. The circuit can include amplification, equalization, and input selection with efficient code word detection. The vector signaling code can be a Hadamard matrix code encoding for three input bits. The circuit might also have frequency-dependent gain, a selection function that directs one of the summation function result or the first difference result to the output function, variable gain, and/or a slicer.

摘要翻译： 在检测电路中，输入对应于由第一集成电路从第二集成电路接收的矢量信令码字的接收指示。 利用四个输入，电路比较第一对以获得第一差分结果，并且比较与第一对不相交的第二对以获得第二差分结果。 然后将第一和第二差分结果求和以形成输出函数。 系统可以使用多个这样的检测电路来获得输入字。 该电路可以包括具有高效的码字检测的放大，均衡和输入选择。 向量信令码可以是用于三个输入位的Hadamard矩阵码编码。 电路还可以具有频率相关增益，选择功能将求和函数结果或第一差分结果之一引导到输出函数，可变增益和/或限幅器。

公开(公告)号：US09246713B2

公开(公告)日：2016-01-26

申请号：US14313966

申请日：2014-06-24

申请人： Kandou Labs SA

发明人： Amin Shokrollahi

IPC分类号： H04L17/18

CPC分类号： H04L1/0052 ,  H04L1/0045 ,  H04L1/0054 ,  H04L17/18

摘要： Methods and apparatuses are described to determine subsets of vector signaling codes capable of detection by smaller sets of comparators than required to detect the full code. The resulting lower receiver complexity allows systems utilizing such subset codes to be less complex and require less power.

摘要翻译： 描述了方法和装置以确定能够通过较小的比较器组检测的矢量信令代码的子集，而不是检测全码。 由此产生的更低的接收机复杂度使得利用这种子集代码的系统不那么复杂并且需要更少的功率。

公开(公告)号：US09071476B2

公开(公告)日：2015-06-30

申请号：US14199960

申请日：2014-03-06

申请人： Kandou Labs, SA

发明人： John Fox ,  Brian Holden ,  Ali Hormati ,  Peter Hunt ,  John D. Keay ,  Amin Shokrollahi ,  Richard Simpson ,  Anant Singh ,  Andrew Kevin John Stewart ,  Giuseppe Surace ,  Roger Ulrich

IPC分类号： H03K9/00 ,  H04L25/02

CPC分类号： H04L25/028 ,  H04L25/0292

摘要： Systems and methods are described for transmitting data over physical channels to provide a high bandwidth, low latency interface between integrated circuit chips with low power utilization. Communication is performed using group signaling over multiple wires using a vector signaling code, where each wire carries a low-swing signal that may take on more than two signal values.

公开(公告)号：US09014251B2

公开(公告)日：2015-04-21

申请号：US14297579

申请日：2014-06-05

申请人： Kandou Labs SA

发明人： Harm Cronie ,  Klaas Hofstra ,  Amin Shokrollahi

IPC分类号： H03H7/30 ,  H04B1/10 ,  H04L27/01 ,  H03H17/02

CPC分类号： H04L27/01 ,  H03H17/0263 ,  H04B1/10 ,  H04L25/03878 ,  H04L25/03885

摘要： For digital data transmitted using a vector signaling encoding, a rank-order equalizer cancels various channel noise such as inter-symbol interference. Further, rank-order units may be cascaded to achieve improved equalization over successive sample vector signals in a rank-order equalizer. Multiple rank-order equalizers further operate in parallel in a feed forward mode or in series in a feedback mode to provide a continuous vector signaling stream equalization.

摘要翻译： 对于使用向量信令编码发送的数字数据，等级阶均衡器消除诸如符号间干扰的各种信道噪声。 此外，等级阶单元可以级联以实现在秩阶均衡器中的连续采样矢量信号的改进的均衡。 多个等级均衡器进一步在前馈模式中并行操作或以反馈模式串联操作，以提供连续的矢量信令流均衡。

公开(公告)号：US20150063494A1

公开(公告)日：2015-03-05

申请号：US14014082

申请日：2013-08-29

申请人： Kandou Labs, S.A.

发明人： Richard Simpson ,  Andrew Kevin John Stewart ,  Brian Holden ,  Amin Shokrollahi

IPC分类号： H04B1/06

CPC分类号： H04B1/06 ,  G06F13/385 ,  Y02D10/14 ,  Y02D10/151

摘要： In a high-impedance communications interface, driver energy consumption is proportional to the number of signal transitions. For signals having three or more distinct levels, it is possible for a signal driver to salvage energy from some downward signal transitions and reuse it on some subsequent upward signal transitions. To facilitate this energy-conserving behavior, communication is performed using group signaling over sets of wires using a vector signaling code, with the design and use of the vector signaling code insuring that energy availability is balanced with energy demand.

摘要翻译： 在高阻抗通信接口中，驱动器的能量消耗与信号转换的数量成正比。 对于具有三个或更多个不同等级的信号，信号驱动器可以从一些向下的信号转换中挽救能量并且在一些后续的向上信号转换上重用它。 为了促进这种节能行为，使用矢量信令代码，使用组合信令对集合信号进行通信，同时设计和使用矢量信令码，确保能量可用性与能量需求平衡。

公开(公告)号：US08952834B1

公开(公告)日：2015-02-10

申请号：US13778045

申请日：2013-02-26

申请人： Kandou Labs, S.A.

发明人： Harm Cronie

IPC分类号： H03M13/00 ,  H03M7/02

CPC分类号： H03M7/02 ,  H03M5/145 ,  H03M13/13

摘要： Methods and circuits are described for creating low-weight codes, encoding of data as low-weight codes for communication or storage, and efficient decoding of low-weight codes to recover the original data. Low-weight code words are larger than the data values they encode, and contain a significant preponderance of a single value, such as zero bits. The resulting encoded data may be transmitted with significantly lower power and/or interference.

摘要翻译： 描述了用于创建低权重代码，将数据编码为用于通信或存储的低权重代码的方法和电路以及用于恢复原始数据的低权重代码的有效解码。 低权重码字大于其编码的数据值，并且包含单个值的重要优势，例如零位。 所得到的编码数据可以以显着更低的功率和/或干扰来传输。

公开(公告)号：US20140226734A1

公开(公告)日：2014-08-14

申请号：US14178051

申请日：2014-02-11

申请人： Kandou Labs, S.A.

发明人： John Fox ,  Brian Holden ,  Peter Hunt ,  John D. Keay ,  Amin Shokrollahi ,  Andrew Kevin John Stewart ,  Giuseppe Surace ,  Roger Ulrich ,  Richard Simpson

IPC分类号： H04B3/04

CPC分类号： H03K19/018521 ,  G06F13/4282 ,  H01L23/147 ,  H01L23/5384 ,  H01L2224/16 ,  H01L2924/15174 ,  H01L2924/15192 ,  H03K3/037 ,  H03K19/017509 ,  H04B1/40 ,  H04L67/12 ,  Y02D10/14 ,  Y02D10/151

摘要： Systems and methods are described for transmitting data over physical channels to provide a high bandwidth, low latency interface between integrated circuit chips with low power utilization. Communication is performed using group signaling over multiple wires using a vector signaling code, where each wire carries a low-swing signal that may take on more than two signal values.