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公开(公告)号:US12026117B2
公开(公告)日:2024-07-02
申请号:US17604197
申请日:2020-08-25
Inventor: Hideaki Yamashita , Takeshi Ootsuka
IPC: G06F13/40 , G06F1/3225
CPC classification number: G06F13/4081 , G06F1/3225
Abstract: A data transfer system, which comprises a system host and an adaptor including a local host, is provided. The adaptor is connectable to a local device inserted into the adaptor and includes a switch unit configured to perform address translation and Requestor (Req) ID translation for data transfers between the local device and the system host. The system host checks, when the local device is inserted or removed while the system host is in operation, a type of a protocol applied to the local device and reloads a device driver based on a result of the check. The device driver includes a pre-sleep state storage configured to store an insertion and removal state of the local device immediately before the system host and the adaptor enter a sleep state.
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公开(公告)号:US12271604B2
公开(公告)日:2025-04-08
申请号:US17418672
申请日:2020-03-04
Inventor: Takeshi Ootsuka , Hideaki Yamashita
Abstract: A recording control system includes a storage medium and a control device that is detachably connectable to and controls reading/writing of data to/from the storage medium. The storage medium stores a first authentication code corresponding to at least one first attribute of the storage medium among attributes regarding reading and writing. The control device includes: a readout unit that outputs first request information to the storage medium to read therefrom at least one common authentication code each corresponding to a respective one of at least one common attribute of the first authentication code and the first request information, the first request information corresponding to at least one second attribute of the control device; an identification unit that identifies the at least one common attribute according to the at least one common authentication code; and a control unit that controls the reading/writing according to the at least one common attribute.
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公开(公告)号:US10565147B2
公开(公告)日:2020-02-18
申请号:US16083333
申请日:2017-03-08
Inventor: Hideaki Yamashita , Takeshi Ootsuka
Abstract: System host (2) requests a command to local device (6), and local host (10) interprets the requested command and issues the command to local device (6). Local device (6) notifies local host (10) of an interrupt of command complete and local host (10) notifies system host (2) of the command complete. Data transfer between system host (2) and local device (6) is performed via advanced switching unit (8), and advanced switching unit (8) converts an address on local host (10) side into an address on system host (2) side and transfers PCI packets between local host (10) and system host (2).
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公开(公告)号:US11809340B2
公开(公告)日:2023-11-07
申请号:US17378068
申请日:2021-07-16
Inventor: Hideaki Yamashita , Takeshi Ootsuka
CPC classification number: G06F13/1668 , G06F3/0604 , G06F3/0659 , G06F3/0679
Abstract: A memory card includes first and second interface units connected to a system host, a memory unit, and an additional information registration unit. The memory unit includes a first identifier storage unit that stores an identifier of the memory unit, a flash memory, and a memory controller that controls the first identifier storage unit and the flash memory via the first interface unit. The additional information registration unit includes a second identifier storage unit that stores an identifier same as the identifier of the memory unit, and an additional information notification unit that notifies the system host of the identifier in the second identifier storage unit and additional information via the second interface unit. When the memory card is connected to the system host, the memory unit and the additional information registration unit are associated with each other by the identifiers stored in the first and second identifier storage units.
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公开(公告)号:US10509751B2
公开(公告)日:2019-12-17
申请号:US16082118
申请日:2017-03-08
Inventor: Hideaki Yamashita , Takeshi Ootsuka
Abstract: In cases where local devices (6, 6a) support a master transfer function, a portion of the memory space, of each of local devices (6, 6a), to be controlled from system host (2) is mapped onto a memory space on system host (2) side and a plurality of local devices (6, 6a) are reconfigured as one virtual local device. This provides information processing apparatus (4) which, in cases of connection with the plurality of local devices (6, 6a), resolves resource shortage on system host (2) side by appropriately mapping necessary registers of local devices (6, 6a) onto a memory space for system host (2).
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