摘要:
A removable hard disk drive is detachable from a computer apparatus, and includes a storage medium for storing data from the computer apparatus and a communication interface with the computer apparatus. Upon reception of eject instruction issued by the computer apparatus, the removable hard disk drive writes contents cashed in a cache memory into a disk, and shifts to an ejectable state. Upon the completion of the shift to the ejectable state, the removable hard disk drive externally outputs an eject signal. A microprocessor which controls an eject mechanism executes removable hard disk cartridge eject operation in response to the eject signal.
摘要:
An information processing system which is capable of promptly authenticating a combination of a disk array device accommodating a plurality of disk devices, and an information processing apparatus in which the disk array device is mounted. A first control section of a cartridge device as a disk array device stores ID information for use in authentication by an information processing apparatus, and a second control section of the information processing apparatus acquires the ID information from the first control section. The second control section authenticates the cartridge device by using the acquired ID information. A third control section of the information processing apparatus reads out information from hard disk devices contained in the cartridge device when the authentication by the second control section is successful.
摘要:
In an information processing apparatus which is equipped with plural storage devices, there are provided a security information comparison unit for, in a case where data is moved from a movement source storage device to a movement destination storage device, comparing security information of the movement source storage device with security information of the movement destination storage device, and a data movement control unit for controlling the movement of the data based on a comparison result by the security information comparison unit. Thus, it is possible to strongly secure safety with respect to the movement and/or copy of the data among the storage devices by a user.
摘要:
In an information processing apparatus which is equipped with plural storage devices, there are provided a security information comparison unit for, in a case where data is moved from a movement source storage device to a movement destination storage device, comparing security information of the movement source storage device with security information of the movement destination storage device, and a data movement control unit for controlling the movement of the data based on a comparison result by the security information comparison unit. Thus, it is possible to strongly secure safety with respect to the movement and/or copy of the data among the storage devices by a user.
摘要:
A burst signal generator generates a burst signal that is a variable length portion whose length changes in accordance with fluctuations in data input at a predetermined period. An OFDM modulator generates an OFDM signal (including a guard interval portion and an effective symbol portion) that is a fixed length portion containing data corresponding to n (n is a positive integer) times or 1/n of the predetermined period. A frame includes the variable length portion and the fixed length portion. This makes a transmission signal actually have a frame period almost equal to the period of a signal synchronized with the clock of a player, including the fluctuations.
摘要:
There is provided an imaging and recording system including an imaging apparatus and a recording apparatus. The imaging apparatus receives an output bit rate instruction which is issued by the recording apparatus and instructs the imaging apparatus on the first bit rate of image data to be output from the imaging apparatus. The imaging apparatus converts a sensed image into image data of a predetermined bit rate on the basis of the received output bit rate instruction, and outputs the image data to the recording apparatus. The recording apparatus has a disk type recording medium. The recording apparatus calculates the second bit rate which allows recording on the disk type recording medium, calculates the first bit rate of image data to be output from the imaging apparatus on the basis of the second bit rate, and issues the output bit rate instruction to the imaging apparatus. The recording apparatus receives the image data output from the imaging apparatus, and records the image data on the disk type recording medium.
摘要:
A communication apparatus performs communication of data using assigned time slots within a frame. In a case where data cannot be transmitted in a transmission time slot that has been assigned in order to transmit data, a time slot later than this transmission time slot is reserved as a time slot used to transmit the data, this later time slot being reserved within the frame having the transmission time slot in which the data cannot be transmitted.
摘要:
A compound semiconductor epitaxial substrate and a process for producing the same are provided. The compound semiconductor epitaxial substrate comprises a single crystal substrate, a lattice mismatch compound semiconductor layer and a stress compensation layer, wherein the lattice mismatch compound semiconductor layer and the stress compensation layer are disposed on the identical surface side of the single crystal substrate, there is no occurrence of lattice relaxation in the lattice mismatch compound semiconductor layer, as well as the stress compensation layer, and Ls representing the lattice constant of the single crystal substrate, Lm representing the lattice constant of the lattice mismatch compound semiconductor layer, and Lc representing the lattice constant of the stress compensation layer satisfy the formula (1a) or (1b). Lm Lm>Ls>Lc (2a)
摘要:
Provided is an optical device including a base wafer containing silicon, a plurality of seed crystals disposed on the base wafer, and a plurality of Group 3-5 compound semiconductors lattice-matching or pseudo lattice-matching the plurality of seed crystals. At least one of the Group 3-5 compound semiconductors has a photoelectric semiconductor formed therein, the photoelectric semiconductor including a light emitting semiconductor that emits light in response to a driving current supplied thereto or a light receiving semiconductor that generates a photocurrent in response to light applied thereto, and at least one of the plurality of Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor having the photoelectric semiconductor has a heterojunction transistor formed therein.
摘要:
A digital camera includes: a mirror box that defines a space in which a light flux from a photographic lens is guided to an imaging unit; a mirror unit that is arranged inside the mirror box and is configured to rotate between a viewing position in which the mirror unit is inserted in a photographic light path from the photographic lens to the imaging unit to reflect the light flux and a photographing position in which the mirror unit is retracted from the photographic light path; and an opening section that discharges from the mirror box air that is moved when the mirror unit is rotated.