公开(公告)号：US20220386471A1

公开(公告)日：2022-12-01

申请号：US17683741

申请日：2022-03-01

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa

IPC分类号： H05K3/00 ,  H05K1/11 ,  H05K1/02 ,  G06F30/394

摘要： A design program for causing a computer to execute a process including: selecting, based on design data of a printed wiring board, a first transmission line and a second transmission line among transmission lines provided in the printed wiring board; adjusting a first wiring length between a first via in the first transmission line and a third via in the first transmission line, a second wiring length between a second via in the second transmission line and a fourth via in the second transmission line, a length of the first via, a length of the second via, a length of the third via, or a length of the fourth via such that a phase of first crosstalk noise generated between the first via and the second via is inverted between the third via and the fourth via; and outputting the design data corrected based on the adjustment in the board.

公开(公告)号：US20190122712A1

公开(公告)日：2019-04-25

申请号：US16162438

申请日：2018-10-17

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa

IPC分类号： G11C7/22 ,  G11C29/56

摘要： A system includes: a first device; a second device connected to the first device via a transmission line; and control devices that are coupled to the first and second devices and control transmission and reception of a data signal and a timing signal between the first device and the second device, wherein the first device: determines a combination of phases with which a range of a voltage of determination as to whether the data signal is acquired is wider than a range of a voltage in which the data signal is acquired in other combinations of phases in information including combinations of phases in which a phase of the timing signal is specified for each data line in the transmission line, when the second device is operated according to the combinations of phases based on the information; and controls the second device based on the combination of the phases.

公开(公告)号：US11812560B2

公开(公告)日：2023-11-07

申请号：US17683741

申请日：2022-03-01

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa

IPC分类号： H05K3/00 ,  H05K1/11 ,  G06F30/394 ,  H05K1/02 ,  G06F115/12

CPC分类号： H05K3/0005 ,  G06F30/394 ,  H05K1/0228 ,  H05K1/115 ,  G06F2115/12

摘要： A design program for causing a computer to execute a process including: selecting, based on design data of a printed wiring board, a first transmission line and a second transmission line among transmission lines provided in the printed wiring board; adjusting a first wiring length between a first via in the first transmission line and a third via in the first transmission line, a second wiring length between a second via in the second transmission line and a fourth via in the second transmission line, a length of the first via, a length of the second via, a length of the third via, or a length of the fourth via such that a phase of first crosstalk noise generated between the first via and the second via is inverted between the third via and the fourth via; and outputting the design data corrected based on the adjustment in the board.

公开(公告)号：US09514794B2

公开(公告)日：2016-12-06

申请号：US15088459

申请日：2016-04-01

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa ,  Shinya Aiso ,  Keiji Shimatani

IPC分类号： G11C7/00 ,  G11C7/22

CPC分类号： G11C7/22 ,  G11C29/023 ,  G11C29/028 ,  G11C29/56012 ,  G11C2029/0401

摘要： An information processing apparatus configured to adjust a phase relation between a data signal and a strobe signal includes a processor and memory. The memory stores instructions for causing the processor to execute identifying, for each of a plurality of candidates for reference values used to perform a determination regarding a value of the data signal, at least one phase difference between the data signal and the strobe signal for successfully acquiring the data signal according to the strobe signal, determining a reference value of the plurality of candidates for which a period for successfully acquiring the data signal is longer than periods for any other candidates based on the identified phase difference for each candidate, and adjusting the phase relation between the data signal and the strobe signal based on the period for the determined reference value.

摘要翻译： 配置为调整数据信号和选通信号之间的相位关系的信息处理装置包括处理器和存储器。 存储器存储用于使处理器对于多个候选中的每一个执行用于执行关于数据信号的值的确定的参考值的指令，用于成功地识别数据信号和选通信号之间的至少一个相位差 根据所述选通信号获取所述数据信号，基于所识别的每个候选的相位差确定成功获取所述数据信号的周期的所述多个候选的参考值比任何其他候选的周期长，并且调整 基于所确定的参考值的周期，数据信号和选通信号之间的相位关系。

公开(公告)号：US10861514B2

公开(公告)日：2020-12-08

申请号：US16162438

申请日：2018-10-17

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa

IPC分类号： G11C7/22 ,  G11C29/56 ,  G06F1/04 ,  G11C29/12 ,  G06F13/16 ,  G11C29/02 ,  G11C5/04 ,  G11C7/10

摘要： A system includes: a first device; a second device connected to the first device via a transmission line; and control devices that are coupled to the first and second devices and control transmission and reception of a data signal and a timing signal between the first device and the second device, wherein the first device: determines a combination of phases with which a range of a voltage of determination as to whether the data signal is acquired is wider than a range of a voltage in which the data signal is acquired in other combinations of phases in information including combinations of phases in which a phase of the timing signal is specified for each data line in the transmission line, when the second device is operated according to the combinations of phases based on the information; and controls the second device based on the combination of the phases.

公开(公告)号：US20160293237A1

公开(公告)日：2016-10-06

申请号：US15088459

申请日：2016-04-01

申请人： FUJITSU LIMITED

发明人： Toshiaki Ozawa ,  Shinya Aiso ,  Keiji Shimatani

IPC分类号： G11C7/22

CPC分类号： G11C7/22 ,  G11C29/023 ,  G11C29/028 ,  G11C29/56012 ,  G11C2029/0401

摘要： An information processing apparatus configured to adjust a phase relation between a data signal and a strobe signal includes a processor and memory. The memory stores instructions for causing the processor to execute identifying, for each of a plurality of candidates for reference values used to perform a determination regarding a value of the data signal, at least one phase difference between the data signal and the strobe signal for successfully acquiring the data signal according to the strobe signal, determining a reference value of the plurality of candidates for which a period for successfully acquiring the data signal is longer than periods for any other candidates based on the identified phase difference for each candidate, and adjusting the phase relation between the data signal and the strobe signal based on the period for the determined reference value.

摘要翻译： 配置为调整数据信号和选通信号之间的相位关系的信息处理装置包括处理器和存储器。 存储器存储用于使处理器对于多个候选中的每一个执行用于执行关于数据信号的值的确定的参考值的指令，用于成功地识别数据信号和选通信号之间的至少一个相位差 根据所述选通信号获取所述数据信号，基于所识别的每个候选的相位差确定成功获取所述数据信号的周期的所述多个候选的参考值比任何其他候选的周期长，并且调整 基于所确定的参考值的周期，数据信号和选通信号之间的相位关系。