公开(公告)号：US11327555B2

公开(公告)日：2022-05-10

申请号：US16994894

申请日：2020-08-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seok-Ju Yoon ,  Nak-Woo Sung ,  Seung-Chull Suh ,  Taek-Ki Kim ,  Jae-Joon Yoo ,  Eun-Ok Jo

IPC: G06F1/329 ,  G06F1/3228 ,  G06F1/324 ,  G06F1/3296 ,  G06F15/167 ,  G06F9/50

Abstract: A method of operating an application processor including a central processing unit (CPU) with at least one core and a memory interface includes measuring, during a first period, a core active cycle of a period in which the at least one core performs an operation to execute instructions and a core idle cycle of a period in which the at least one core is in an idle state, generating information about a memory access stall cycle of a period in which the at least one core accesses the memory interface in the core active cycle, correcting the core active cycle using the information about the memory access stall cycle to calculate a load on the at least one core using the corrected core active cycle, and performing a DVFS operation on the at least one core using the calculated load on the at least one core.

公开(公告)号：US10747297B2

公开(公告)日：2020-08-18

申请号：US15797383

申请日：2017-10-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seok-Ju Yoon ,  Nak-Woo Sung ,  Seung-Chull Suh ,  Taek-Ki Kim ,  Jae-Joon Yoo ,  Eun-Ok Jo

IPC: G06F1/329 ,  G06F1/324 ,  G06F1/3228 ,  G06F15/167 ,  G06F1/3296

Abstract: A method of operating an application processor including a central processing unit (CPU) with at least one core and a memory interface includes measuring, during a first period, a core active cycle of a period in which the at least one core performs an operation to execute instructions and a core idle cycle of a period in which the at least one core is in an idle state, generating information about a memory access stall cycle of a period in which the at least one core accesses the memory interface in the core active cycle, correcting the core active cycle using the information about the memory access stall cycle to calculate a load on the at least one core using the corrected core active cycle, and performing a DVFS operation on the at least one core using the calculated load on the at least one core.

公开(公告)号：US11656675B2

公开(公告)日：2023-05-23

申请号：US17739732

申请日：2022-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seok-Ju Yoon ,  Nak-Woo Sung ,  Seung-Chull Suh ,  Taek-Ki Kim ,  Jae-Joon Yoo ,  Eun-Ok Jo

IPC: G06F1/329 ,  G06F1/3228 ,  G06F1/324 ,  G06F1/3296 ,  G06F15/167 ,  G06F9/50

CPC classification number: G06F1/329 ,  G06F1/324 ,  G06F1/3228 ,  G06F1/3296

Abstract: A method of operating an application processor including a central processing unit (CPU) with at least one core and a memory interface includes measuring, during a first period, a core active cycle of a period in which the at least one core performs an operation to execute instructions and a core idle cycle of a period in which the at least one core is in an idle state, generating information about a memory access stall cycle of a period in which the at least one core accesses the memory interface in the core active cycle, correcting the core active cycle using the information about the memory access stall cycle to calculate a load on the at least one core using the corrected core active cycle, and performing a DVFS operation on the at least one core using the calculated load on the at least one core.

公开(公告)号：US10725525B2

公开(公告)日：2020-07-28

申请号：US15838613

申请日：2017-12-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jong-Lae Park ,  Seok-Ju Yoon ,  Young-Tae Lee ,  Lak-Kyung Jung

IPC: G06F1/32 ,  G06F1/26 ,  G06F1/324 ,  G06F15/78 ,  G06F13/24 ,  G06F1/3296

Abstract: A method of operating a system-on-chip (SOC) including a central processing unit (CPU) and a target hardware to which a dynamic voltage and frequency scaling (DVFS) is applied, includes determining an operating scheme of the target hardware, setting a DVFS application scheme for applying the DVFS to the target hardware, based on the operating scheme of the target hardware, and performing the DVFS on the target hardware, based on the DVFS application scheme.