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1. 发明申请

US20190068278A1 MANAGING DATA FLOW IN VCSEL-BASED OPTICAL COMMUNICATIONS SYSTEM 审中-公开
公开(公告)号：US20190068278A1
公开(公告)日：2019-02-28
申请号：US15686304
申请日：2017-08-25
申请人： GLOBALFOUNDRIES Inc. , International Business Machines Corporation
发明人： Hayden C. Cranford, JR. , Jonathan E. Proesel , Rashmi R. Bindu
IPC分类号： H04B10/079 , H04B10/50 , H01S5/068
摘要： Methods according to the disclosure include methods for managing data flow in an optical communications system having a plurality of vertical cavity surface emitting lasers (VCSELs). The method generally includes determining whether operation of the system exceeds a thermal threshold for a thermal parameter of the system, and switching from a first data bandwidth to a second data bandwidth when the thermal threshold is exceeded. Operation at the second data bandwidth further includes determining whether further operation of the system demands the first data bandwidth, and resuming operation of the system at the first data bandwidth only when the thermal parameter during operation at the second data bandwidth does not exceed the thermal threshold.

2. 发明申请

US20140149629A1 SYSTEMS AND METHODS FOR SIGNAL DETECTION 有权
标题翻译：用于信号检测的系统和方法
公开(公告)号：US20140149629A1
公开(公告)日：2014-05-29
申请号：US13781669
申请日：2013-02-28
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Hayden C. Cranford, JR. , Daniel M. Dreps , William R. Kelly
IPC分类号： G06F13/38
CPC分类号： G06F13/423 , G06F2213/0026 , Y02D10/14 , Y02D10/151
摘要： Methods for detecting one or more signals at a PCI Express interface includes receiving, a signal by a receiver at the PCI Express interface. The methods further include identifying one or more data sampling points to set an amplitude threshold. Further, the method includes comparing an amplitude of the received signal with the amplitude threshold. The method also includes confirming that the received signal is a valid signal when the amplitude of the signal is at least one of greater than or equal to the amplitude threshold over a predefined period of time. The method also includes disabling a signal detector of the PCI Express interface to save power. The signal detector is configured to detect one or more low frequency signals; and testing whether the detected signal is correct.
摘要翻译：用于在PCI Express接口检测一个或多个信号的方法包括由PCI Express接口的接收器接收信号。所述方法还包括识别一个或多个数据采样点以设置振幅阈值。此外，该方法包括将接收信号的幅度与振幅阈值进行比较。该方法还包括当信号的幅度在预定时间段内大于或等于振幅阈值中的至少一个时，确认接收信号是有效信号。该方法还包括禁用PCI Express接口的信号检测器以节省电力。信号检测器被配置为检测一个或多个低频信号; 并检测检测到的信号是否正确。

3. 发明申请

US20150146768A1 POWER AWARE EQUALIZATION IN A SERIAL COMMUNICATIONS LINK 有权
标题翻译：串行通信链路中的功率均衡化
公开(公告)号：US20150146768A1
公开(公告)日：2015-05-28
申请号：US14088484
申请日：2013-11-25
申请人： International Business Machines Corporation
发明人： John F. Bulzacchelli , Hayden C. Cranford, JR. , Daniel M. Dreps , David W. Siljenberg
IPC分类号： H04L25/03
CPC分类号： H04L25/03885 , H04L25/03006 , H04L25/03114 , H04L25/03159 , H04L2025/03566 , H04L2025/03592
摘要： Power aware equalization in a serial communications link that includes a transmitter and a receiver, including: determining, by a power aware equalization module, a required signal eye width and a required signal eye height for signals received by the receiver; identifying one or more signal equalizers for signals transmitted over the serial communications link; identifying one or more cumulative equalizer settings that equalize signals transmitted over the serial communications link to conform with the required signal eye width and the required signal eye height for signals received by the receiver; determining power consumption values associated with each of the one or more cumulative equalizer settings; and setting the one or more signal equalizers to configuration settings in dependence upon the power consumption values associated with each of the one or more cumulative equalizer settings.
摘要翻译：包括发射机和接收机的串行通信链路中的功率感知均衡包括：由功率感知均衡模块确定由接收机接收的信号所需的信号眼睛宽度和所需信号眼睛高度; 识别通过串行通信链路传输的信号的一个或多个信号均衡器; 识别均衡通过串行通信链路发送的信号的一个或多个累积均衡器设置，以符合由接收机接收的信号的所需信号眼宽度和所需信号眼睛高度; 确定与所述一个或多个累积均衡器设置中的每一个相关联的功耗值; 以及根据与所述一个或多个累积均衡器设置中的每一个相关联的功耗值，将所述一个或多个信号均衡器设置为配置设置。

4. 发明申请

US20140254650A1 ADAPTABLE RECEIVER DETECTION 有权
标题翻译：适应接收机检测
公开(公告)号：US20140254650A1
公开(公告)日：2014-09-11
申请号：US13792281
申请日：2013-03-11
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： John J. Bergkvist, JR. , Steven M. Clements , Carrie E. Cox , Hayden C. Cranford, JR. , Todd E. Leonard
IPC分类号： H04B17/00
CPC分类号： H04B17/0037 , H04B17/104
摘要： Methods and apparatuses for adaptable receiver detection are provided. Embodiments include providing, by receiver detection circuitry at a transmitter coupled to a communication link, a voltage to the communication link; determining, by the receiver detection circuitry, a rise time corresponding to a rising edge change of the voltage on the communication link; determining, by the receiver detection circuitry, a fall time corresponding to a falling edge change of the voltage on the communication link; and determining, by the receiver detection circuitry, whether the rise time and the fall time are consistent with the transmitter being coupled through the communication link to a remote receiver.
摘要翻译：提供了适应性接收机检测的方法和装置。实施例包括通过耦合到通信链路的发射机的接收机检测电路向通信链路提供电压; 由所述接收机检测电路确定与所述通信链路上的电压的上升沿变化相对应的上升时间; 由所述接收机检测电路确定对应于所述通信链路上的电压的下降沿变化的下降时间; 以及由接收机检测电路确定上升时间和下降时间是否与通过通信链路耦合到远程接收机的发射机一致。

5. 发明申请

US20140149627A1 SYSTEMS AND METHODS FOR SIGNAL DETECTION 有权
标题翻译：用于信号检测的系统和方法
公开(公告)号：US20140149627A1
公开(公告)日：2014-05-29
申请号：US13685583
申请日：2012-11-26
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Hayden C. Cranford, JR. , Daniel M. Dreps , William R. Kelly
IPC分类号： G06F13/38
CPC分类号： G06F13/423 , G06F2213/0026 , Y02D10/14 , Y02D10/151
摘要： A system for detecting one or more signals at a PCI Express interface includes a receiver configured to receive a signal at the PCI Express interface, and a peak detector configured to detect one or more signals based on level sensing, and identify one or more data sampling points to set an amplitude threshold. A comparator is configured to compare an amplitude of the received signal with the amplitude threshold, and a processor is configured to confirm that the received signal is a valid signal when the amplitude of the signal is at least one of greater than or equal to the amplitude threshold over a predefined period of time. The processor is also configured to disable a signal detector that can detect one or more low frequency signals. The system also includes a tester configured to test whether the detected signal is correct.
摘要翻译：用于在PCI Express接口处检测一个或多个信号的系统包括被配置为在PCI Express接口处接收信号的接收机，以及被配置为基于电平感测来检测一个或多个信号的峰值检测器，并且识别一个或多个数据采样点设置振幅阈值。比较器被配置为将接收信号的幅度与幅度阈值进行比较，并且处理器被配置为当信号的幅度是大于或等于幅度的至少一个时，确认接收信号是有效信号阈值超过预定义的时间段。处理器还被配置为禁用可以检测一个或多个低频信号的信号检测器。该系统还包括测试器，其被配置为测试检测到的信号是否正确。

6. 发明申请

US20180278218A1 PEAKING AMPLIFIER FREQUENCY TUNING 审中-公开
公开(公告)号：US20180278218A1
公开(公告)日：2018-09-27
申请号：US15790144
申请日：2017-10-23
申请人： GLOBALFOUNDRIES Inc.
发明人： Michael Chen , Steven M. Clements , Mohak Chhabra , Steven E. Mikes , Hayden C. Cranford, JR.
IPC分类号： H03F1/48 , H03F3/68 , H03F3/191
CPC分类号： H03F1/486 , H03F1/34 , H03F3/191 , H03F3/195 , H03F3/211 , H03F3/68 , H03F2200/135
摘要： A circuit including: input and output nodes and first and second feedback nodes; a first input amplifier having an input connected to the input node and an output connected to the first feedback node; a second input amplifier having an input connected to the input node and an output connected to the second feedback node; a capacitor connecting the first feedback node and the second feedback node; an amplifier having an input connected to the first feedback node and an output connected to the output node; a base feedback amplifier with an input connected to the output node and an output connected to the first feedback node; a tunable feedback amplifier with an input connected to the output node and an output connected to the second feedback node; and a tuning circuit for varying a transconductance of the tunable feedback circuit and operational frequency of the peaking amplifier circuit.

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