Abstract: A semiconductor memory card which can be attached to a host apparatus and can be removed from the host apparatus includes a plurality of data transfer terminals, and an internal circuit transmitting a first signal to at least one first data transfer terminal comprising at least one of the data transfer terminals and transmitting a second signal to at least one second data transfer terminal comprising at least one of the data transfer terminals different from the first data transfer terminals. The second signal is generated by executing a logical operation on the first signal.

Abstract: In an access control method of an embodiment, a first arithmetic unit writes a file in a first non-volatile storage region that can be accessed by the first arithmetic unit and cannot be accessed by a second arithmetic unit. Then, when the first arithmetic unit is started next time, the first arithmetic unit copies the file from the first non-volatile storage region to a second non-volatile storage region before the second arithmetic unit recognizes the second non-volatile storage region. Further, after the copy, the second arithmetic unit recognizes the second non-volatile storage region.

Abstract: According to one embodiment, a portability type semiconductor memory device includes communications circuitry, an interface circuitry, a non-transitory computer readable memory, a first retrieval circuitry, a second retrieval circuitry. If the at least one access point is not within communicating range, the portability-type semiconductor memory device is configured to disregard commands from the host device. If the at least one access point is within communicating range, as determined by the first retrieval circuitry, the second retrieval circuitry is further configured to determine whether the server is accessible through the access point, based on the stored information.

Abstract: Provided is a semiconductor storage device having a first interface section meeting a USB standard for connection to host equipment, a NAND memory section that is a first semiconductor memory section, a second interface section to which small memory cards can be connected, each small memory card having a second semiconductor memory section, and a controller capable of controlling the NAND memory section and the second semiconductor memory sections by one linear address.

Abstract: A semiconductor memory device comprises an input unit inputting an address and data; a storage unit storing data and a FAT; an address conversion unit converting the address; an access unit accessing the storage unit according to the converted address; a detection unit detecting a format of the FAT; and an alteration unit altering conversion rules in the address conversion unit according to the detection.

Abstract: A semiconductor memory card which can be attached to a host apparatus and can be removed from the host apparatus includes a plurality of data transfer terminals, and an internal circuit transmitting a first signal to at least one first data transfer terminal comprising at least one of the data transfer terminals and transmitting a second signal to at least one second data transfer terminal comprising at least one of the data transfer terminals different from the first data transfer terminals. The second signal is generated by executing a logical operation on the first signal.

Abstract: A USB memory includes: a USB terminal unit, a main unit which incorporates therein a NAND memory and a processor module; and a rotation portion which changes a relative position between the main unit and the USB terminal unit. The processor module switches an access management mode to a first access management mode or a second access management mode depending on the relative position between the main unit and the USB terminal unit. The processor module manages data stored in the NAND memory such that data having been stored under the first access management mode is rendered inaccessible to the host device with the second access management mode and that data having been stored under the second access management mode is rendered inaccessible to the host device with the first access management mode.

Abstract: A USB memory includes: a USB terminal unit, a main unit which incorporates therein a NAND memory and a processor module; and a rotation portion which changes a relative position between the main unit and the USB terminal unit. The processor module switches an access management mode to a first access management mode or a second access management mode depending on the relative position between the main unit and the USB terminal unit. The processor module manages data stored in the NAND memory such that data having been stored under the first access management mode is rendered inaccessible to the host device with the second access management mode and that data having been stored under the second access management mode is rendered inaccessible to the host device with the first access management mode.

Abstract: Provided is a semiconductor storage device having a first interface section meeting a USB standard for connection to host equipment, a NAND memory section that is a first semiconductor memory section, a second interface section to which small memory cards can be connected, each small memory card having a second semiconductor memory section, and a controller capable of controlling the NAND memory section and the second semiconductor memory sections by one linear address.

Abstract: A host device exchanging information with a memory card, the host device including: a charge management module configured to receive payment of a charge corresponding to an increased amount of a usable area if a capacity of the usable area of the memory card for saving user data is increased, and pay out a charge corresponding to the reduced amount of the usable area if the capacity of the usable area is reduced; and a transmission module configured to transmit an area changing command to instruct an increase or a reduction of the usable area in accordance with the charge to the memory card.

Abstract: A semiconductor memory device comprises an input unit inputting an address and data; a storage unit storing data and a FAT; an address conversion unit converting the address; an access unit accessing the storage unit according to the converted address; a detection unit detecting a format of the FAT; and an alteration unit altering conversion rules in the address conversion unit according to the detection.

Abstract: A semiconductor memory card which can be attached to a host apparatus and can be removed from the host apparatus includes a plurality of data transfer terminals, and an internal circuit transmitting a first signal to at least one first data transfer terminal comprising at least one of the data transfer terminals and transmitting a second signal to at least one second data transfer terminal comprising at least one of the data transfer terminals different from the first data transfer terminals. The second signal is generated by executing a logical operation on the first signal.

Abstract: A host device exchanging information with a memory card, the host device including: a charge management module configured to receive payment of a charge corresponding to an increased amount of a usable area if a capacity of the usable area of the memory card for saving user data is increased, and pay out a charge corresponding to the reduced amount of the usable area if the capacity of the usable area is reduced; and a transmission module configured to transmit an area changing command to instruct an increase or a reduction of the usable area in accordance with the charge to the memory card.