公开(公告)号：US10127127B2

公开(公告)日：2018-11-13

申请号：US15171353

申请日：2016-06-02

Applicant: QUALCOMM Incorporated

Inventor： Behnam Dashtipour ,  James Calvin Hudson, IV

IPC: G06F11/30 ,  G06F13/40 ,  G06F13/16 ,  G06F11/22 ,  G06F11/273 ,  G06F11/34

Abstract: Systems and methods for pre-warning a monitoring tool for a communication bus are disclosed. In exemplary aspects, a monitoring tool is coupled to a communication bus. The monitoring tool initially monitors the communication bus in a first manner. When a host changes a parameter of signals on the communication bus, the host sends a signal change command. The monitoring device receives the signal change command and changes the manner that the monitoring device uses to monitor the communication bus or the manner that the monitoring device uses to check protocol. By providing the signal change command before the parameter on the communication bus changes, the monitoring device may use a new manner of monitoring the communication bus in a timely fashion such that the monitoring device does not provide erroneous information about the state of the communication bus.

公开(公告)号：US12211543B2

公开(公告)日：2025-01-28

申请号：US17940430

申请日：2022-09-08

Applicant: QUALCOMM INCORPORATED

Inventor： Victor Van Der Veen ,  Pankaj Deshmukh ,  Behnam Dashtipour ,  David Hartley

IPC: G11C11/4078 ,  G06F13/16 ,  G11C7/10 ,  G11C11/406

Abstract: Mitigating or managing an effect known as “rowhammer” upon a DRAM device may include a memory controller receiving an activation count threshold value from the DRAM device. The memory controller may detect row activation commands directed to the DRAM device and count the number of the row activation commands. The memory controller may send a mitigative refresh command to the DRAM device based on the result of comparing the counted number of row activation commands with the received activation count threshold value.

公开(公告)号：US20230359373A1

公开(公告)日：2023-11-09

申请号：US17661810

申请日：2022-05-03

Applicant: QUALCOMM Incorporated

Inventor： Engin Ipek ,  Hamza Omar ,  Bohuslav Rychlik ,  Saumya Ranjan Kuanr ,  Behnam Dashtipour ,  Michael Hawjing Lo ,  Jeffrey Gemar ,  Matthew Severson ,  George Patsilaras ,  Andrew Edmund Turner

IPC: G06F3/06

CPC classification number: G06F3/0632 ,  G06F3/0604 ,  G06F3/0673

Abstract: Selective refresh techniques for memory devices are disclosed. In one aspect, a memory device that is used with an application that has frequent repeated read or write commands to certain memory segments may be able to set a flag or similar indication that exempts these certain memory segments from being actively refreshed. By exempting these memory segments from being actively refreshed, these memory segments are continuously available, thereby improving performance. Likewise, because these memory segments are so frequently the subject of a read or write command, these memory segments are indirectly refreshed through the execution of the read or write command.

公开(公告)号：US12094515B2

公开(公告)日：2024-09-17

申请号：US17890022

申请日：2022-08-17

Applicant: QUALCOMM INCORPORATED

Inventor： Victor Van Der Veen ,  Pankaj Deshmukh ,  Behnam Dashtipour ,  David Hartley ,  Mosaddiq Saifuddin

IPC: G11C7/00 ,  G11C11/406 ,  G11C11/4096

CPC classification number: G11C11/40618 ,  G11C11/40615 ,  G11C11/4096

Abstract: An effect known as “rowhammer” may be mitigated in a DRAM organized in sub-banks of two or more rows. Row activation commands directed to a sub-bank may be detected. The number of row activation commands occurring within a refresh window may be counted and compared with a threshold. When it is detected that the number of row activation commands within the refresh window exceeds the threshold, an additional refresh command may be provided to the DRAM.

公开(公告)号：US20240062800A1

公开(公告)日：2024-02-22

申请号：US17890022

申请日：2022-08-17

Applicant: QUALCOMM Incorporated

Inventor： Victor Van Der Veen ,  Pankaj Deshmukh ,  Behnam Dashtipour ,  David Hartley ,  Mosaddiq Saifuddin

IPC: G11C11/406 ,  G11C11/4096

CPC classification number: G11C11/40618 ,  G11C11/40615 ,  G11C11/4096

Abstract: An effect known as “rowhammer” may be mitigated in a DRAM organized in sub-banks of two or more rows. Row activation commands directed to a sub-bank may be detected. The number of row activation commands occurring within a refresh window may be counted and compared with a threshold. When it is detected that the number of row activation commands within the refresh window exceeds the threshold, an additional refresh command may be provided to the DRAM.

公开(公告)号：US20160357653A1

公开(公告)日：2016-12-08

申请号：US15171353

申请日：2016-06-02

Applicant: QUALCOMM Incorporated

Inventor： Behnam Dashtipour ,  James Calvin Hudson, IV

IPC: G06F11/30 ,  G06F11/34 ,  G06F11/22 ,  G06F11/273 ,  G06F13/40 ,  G06F13/16

CPC classification number: G06F11/3027 ,  G06F11/2221 ,  G06F11/273 ,  G06F11/349 ,  G06F13/1605 ,  G06F13/1668 ,  G06F13/4068

Abstract: Systems and methods for pre-warning a monitoring tool for a communication bus are disclosed. In exemplary aspects, a monitoring tool is coupled to a communication bus. The monitoring tool initially monitors the communication bus in a first manner When a host changes a parameter of signals on the communication bus, the host sends a signal change command The monitoring device receives the signal change command and changes the manner that the monitoring device uses to monitor the communication bus or the manner that the monitoring device uses to check protocol. By providing the signal change command before the parameter on the communication bus changes, the monitoring device may use a new manner of monitoring the communication bus in a timely fashion such that the monitoring device does not provide erroneous information about the state of the communication bus.

Abstract translation: 公开了用于预警用于通信总线的监视工具的系统和方法。 在示例性方面，监视工具耦合到通信总线。 监控工具首先以第一种方式监视通信总线当主机更改通信总线上的信号参数时，主机发送信号改变命令监控设备接收信号改变命令并改变监控设备使用的方式 监控通信总线或监控设备用于检查协议的方式。 通过在通信总线上的参数之前提供信号改变命令改变，监视设备可以以及时的方式使用监视通信总线的新方式，使得监视设备不提供关于通信总线的状态的错误信息。