Abstract: In one embodiment, a storage device that is installable in an electronic apparatus includes a first communication interface for connecting the electronic apparatus to the storage device, a nonvolatile memory for storing data and data management table storing a data size and address information for the data stored in the nonvolatile memory, and a processor configured to change at least one piece of data stored in the nonvolatile memory without changing file management information stored in the data management table. The processor is configured to change the stored data without receiving an instruction to do so from the electronic apparatus through the first interface.

Abstract: In one embodiment, a storage device that is installable in an electronic apparatus includes a first communication interface for connecting the electronic apparatus to the storage device, a nonvolatile memory for storing data and data management table storing a data size and address information for the data stored in the nonvolatile memory, and a processor configured to change at least one piece of data stored in the nonvolatile memory without changing file management information stored in the data management table. The processor is configured to change the stored data without receiving an instruction to do so from the electronic apparatus through the first interface.

Abstract: A wireless communication apparatus that communicates between first and second wireless communication apparatuses. The second wireless communication apparatus includes a storage unit for storing group ID, a switch for giving instructions of setting up group ID, a transmission/reception unit for transmitting group ID read out from the storage unit to the first wireless communication apparatus to be put together in a group, and receiving a setting up completion signal transmitted from the first wireless communication apparatus, and a control unit for, reading out the group ID from the storage unit to send thus read out group ID to the transmission/reception unit when the switch is operated, and the control unit compares group ID transmitted from the first wireless communication apparatus and the group ID stored in the storage unit when the transmission/reception unit receives the setting up completion signal.

Abstract: The demodulation unit demodulates a received signal. The detection circuit detects the final data contained in a received data stream supplied from the demodulation unit. When detecting the final data, the detection circuit outputs the final data notification signal. The standby period timer sets the standby time in accordance with the final data notification signal output from the detection circuit.

Abstract: A wireless communication apparatus that communicates between first and second wireless communication apparatuses. The second wireless communication apparatus includes a storage unit for storing group ID, a switch for giving instructions of setting up group ID, a transmission/reception unit for transmitting group ID read out from the storage unit to the first wireless communication apparatus to be put together in a group, and receiving a setting up completion signal transmitted from the first wireless communication apparatus, and a control unit for, reading out the group ID from the storage unit to send thus read out group ID to the transmission/reception unit when the switch is operated, and the control unit compares group ID transmitted from the first wireless communication apparatus and the group ID stored in the storage unit when the transmission/reception unit receives the setting up completion signal.

Abstract: The demodulation unit demodulates a received signal. The detection circuit detects the final data contained in a received data stream supplied from the demodulation unit. When detecting the final data, the detection circuit outputs the final data notification signal. The standby period timer sets the standby time in accordance with the final data notification signal output from the detection circuit.

Abstract: An optical position detection apparatus, above all, an optical position detection apparatus for detecting the tilting state, such as rolling and pitching of an object, is disclosed. The apparatus includes a light emitting element mounted on a movable member of the object, a condenser lens secured to a lower end of the movable member and a photosensor device provided below the condenser lens for detecting the light radiated by the light emitting element and condensed by the condenser lens.