Abstract: Provided is a cryptographic processing apparatus for a storage medium, including: a location information conversion unit that stores a conversion result in a buffer, the conversion result obtained by performing a conversion process on location information indicating a location of data to be accessed on the storage medium; and a data cryptographic processing unit that performs cryptography processing on the data using the conversion result stored in the buffer, the cryptography processing being one of encryption and decryption.

Abstract: A control method for a USB 3.0 (USB: Universal Serial Bus) device includes controlling the USB 3.0 device that has entered an SS.Disabled state to transition to an Rx.Detect state when a USB 2.0 connection is not established with a USB host even after a predetermined time, the USB 2.0 connection including any one of an HS (High Speed) connection, an FS (Full Speed) connection, and an LS (Low Speed) connection.

Abstract: A control method for a USB 3.0 (USB: Universal Serial Bus) device includes controlling the USB 3.0 device that has entered an SS.Disabled state to transition to an Rx.Detect state when a USB 2.0 connection is not established with a USB host even after a predetermined time, the USB 2.0 connection including any one of an HS (High Speed) connection, an FS (Full Speed) connection, and an LS (Low Speed) connection.

Abstract: A control unit of a USB 3.0 device controls the USB 3.0 device that has entered an SS.Disabled state to transition to an Rx.Detect state when a USB 2.0 connection is not established after a predetermined time, in which the USB 2.0 connection is one of an HS (High Speed) connection, an FS (Full Speed) connection, and an LS (Low Speed) connection. This enables quick return to the Rx.Detect state for the USB 3.0 device that entered the SS.Disabled state due to an error in the host.

Abstract: Provided is a cryptographic processing apparatus for a storage medium, including: a location information conversion unit that stores a conversion result in a buffer, the conversion result obtained by performing a conversion process on location information indicating a location of data to be accessed on the storage medium; and a data cryptographic processing unit that performs cryptography processing on the data using the conversion result stored in the buffer, the cryptography processing being one of encryption and decryption.

Abstract: One and the other communication terminals for performing wireless communication are connected by a cable. The one communication terminal performs control so that an encryption key is transmitted from the one communication terminal to the other communication terminal by wireless during a period in which the potential of the cable is active. The other communication terminal stores the encryption key received from the one communication terminal within the period in which the potential of the cable is active, as a valid key, for use in subsequent encryption processing.

Abstract: A data transfer method between a USB host and a USB slave (DWA), wherein the USB host sends data transfer request information and transfer data to the USB slave in one data transfer unit based on schedule information, the data transfer request information specifying data transfer to be requested, and the schedule information determining a schedule for data transfer with the USB slave; and the USB slave receives the data transfer request information and the transfer data in succession from the USB host.

Abstract: A communication system according to the present invention includes a first communication apparatus and a second communication apparatus. The first communication apparatus includes a test data generation unit, a packet generation unit and a transmitter unit. The test data generation unit is configured to generate test data. The packet generation unit is configured to having a payload and an error check data in response to a test packet transfer request. The payload contains the test data generated by the test data generation unit. The error check data is used to detecting a digital error occurred in the payload. The transmitter unit is configured to send the test packet. The second communication apparatus is configured to send the test packet transfer request to the first communication apparatus, and to verify quality of the test packet received from the first communication apparatus according to the error check data.

Abstract: A communication system according to an embodiment of the present invention includes: a wireless host performing a master operation; a wired/wireless bridge device communicating with the wireless host via a radio link; and a plurality of devices connected with the wired/wireless bridge device via a wired link and performing a slave operation to communicate with the wireless host via the wired/wireless bridge device, the wired/wireless bridge device controlling transfer with the plurality of devices in accordance with a communication bandwidth of the radio link.

Abstract: One and the other communication terminals for performing wireless communication are connected by a cable. The one communication terminal performs control so that an encryption key is transmitted from the one communication terminal to the other communication terminal by wireless during a period in which the potential of the cable is active. The other communication terminal stores the encryption key received from the one communication terminal within the period in which the potential of the cable is active, as a valid key, for use in subsequent encryption processing.

Abstract: In a PCI bus system comprising an initiator and a target, wherein data is transferred from the target via a PCI bus in response to access from the initiator, a time intercal period required from access to data transfer is stored as latency information in the target. The latency information is transferred from the target to the initiator in response to access requests from the initiator. The initiator determines the next access timing from the relevant latency information. Thereby, a PCI bus occupation time due to repeated access requests can be shortened.

Abstract: A data communication system has a host bus connected to a central processing unit and a system memory, a peripheral component interconnect bus connected to a communication device equipped with a first state machine and a second state machine independently requesting a right to use the peripheral component interconnect bus and a bus bridge circuit connected between the host bus and the peripheral component interconnect bus and having a first-in-first-out memory for data read-out, and the bus first-in-first-out memory for data write-in and another bridge circuit assigns the right to use the peripheral component interconnect bus to the second state machine so as to transfer write-in data codes through the peripheral component interconnect bus to the first-in-first-out memory for data write-in until completion of a data transfer from the system memory through the host bus to the first-in-first-out memory for data read-out, thereby improving the throughput of the peripheral component interconnect bus.

Abstract: This invention relates to a method of setting a pile without causing any noise or vibration. A hollow pile is erected along a leader fixed on the ground, a screw auger is inserted through the hollow center of the pile, the screw auger is hung on the leader in such a manner that it can freely move up and down and freely rotate, and the pile is sunk by its own weight as the soil below the bottom of the pile is excavated and the excavated soil is carried above the ground. The present invention further relates to an apparatus for executing the above method. The lower part of the screw auger is constructed in such a manner that it is divided into two parts, inner tube and outer tube, and both tubes can rotate through a certain angle and move up and down in a certain range relatively to each other.

Abstract: The present invention relates to a process of setting a concrete pile without noise or vibration which is thereby effective to decrease city noises. A concrete pile is sunk into a leading hole substantially concurrently with the progress of the excavation thereof. After the pile has been sunk through a desired distance, another supporting hole is excavated below the pile. A solidifying material, such as cement milk, mortar, or cement concrete including a cement expansion agent of calcium sulfoaluminate system or lime system, is poured into the supporting hole. The solidifying material is expanded within the supporting hole and permeates into the circumferential wall thereof, which is loosened by the excavation, so as to retighten the wall. Therefore, sufficient supporting force can be obtained.