摘要:
A tape speed command signal is differentiated, and in a multiplier, the torque necessary for acceleration or deceleration of a take-up reel motor is calculated in accordance with the moment of inertia of a take-up reel and a winding radius of the tape on the take-up reel. The calculated result is added to a torque command produced by a feedback control system.
摘要:
Glasses worn by a user during viewing of a stereoscopic image include a signal transmission/reception unit 101 and a preference storage unit 106. The signal transmission/reception unit 101 transmits and receives data to and from a stereoscopic image processing device. The preference storage unit 106 stores a preference specialized for a user. The signal transmission/reception unit 101 transmits control information to the stereoscopic image processing device before the user, wearing the glasses, starts viewing the stereoscopic image, the control information instructing the stereoscopic image processing device to perform a status setting using the preference.
摘要:
An image system comprises an image display device which displays images, and image viewing eyeglasses used for viewing images displayed by the image display device. The image display device comprises an image display device configured to display image; and image viewing eyeglasses used for viewing the image displayed by the image display device, wherein the image display device includes: a display portion configured to display the image in time series to be viewed using the image viewing eyeglasses; a synchronization signal generator configured to generate a synchronization signal in synchronization with frame of the image, the synchronization signal including prescribed bit series to transmit bit data described by the presence or absence of a pulse; and a synchronization signal transmitter configured to transmit the synchronization signal, and the image viewing eyeglasses include: an optical filter portion configured to adjust an amount of light transmitted to a left eye and a right eye of a viewer; a synchronization signal receiver configured to receive the synchronization signal transmitted from the synchronization signal transmitter; a synchronization signal analyzer configured to detect the bit series, analyze a pattern of the bit series during a predetermined detection time when the synchronization signal analyzer detects the first pulse received by the synchronization signal receiver, and generate control data to control the optical filter portion; and an optical filter controller configured to control the optical filter portion with the control data.
摘要:
In an information recording medium for recording and reproducing data thereon on a sector-by-sector basis, the recorded data being managed as at least one file by using a file structure, the file structure includes unused space management information for identifying a used region and an unused region. At least one defective region is registered as an unused region in the unused space management information, the at least one defective region being a region on the information recording medium which is incapable of proper reproduction of the recorded data.
摘要:
A card information-storing portion is provided in a semiconductor memory card, and information relating to access performance such as access condition and access rate is held in the storing portion. Further, an access device acquires the held information from the semiconductor memory card to make it possible that the information can be used for control of a file system. This optimizes processing of the access device and the semiconductor memory card independent of differences in characteristics of semiconductor memory cards and management methods used, realizing high-rate access from the access device to a semiconductor memory card.
摘要:
A file system is enabled to use a Metadata Partition instead of VAT for write-once discs, and is provided by a pseudo-overwrite method with a plurality of tracks especially for metadata and file data. On applying this invention to a drive apparatus that supports pseudo-overwrite media, the file system distinguishes data to overwrite from data to append (S1701). When the data is newly written to a logical sector, the drive apparatus writes the data to a physical sector to which the logical sector corresponds (S1703). When the data being overwritten is data stored in the logical sector, the data is written to the other unrecorded physical sector in the volume space (S1704), and remapping information is written (S1705). The remapping information specifies the original address of the physical sector, and the remapping address of the physical sector in which the data is written.
摘要:
An image system comprises an image display device which displays images, and image viewing eyeglasses used for viewing images displayed by the image display device. The image display device comprises an image display device configured to display image; and image viewing eyeglasses used for viewing the image displayed by the image display device, wherein the image display device includes: a display portion configured to display the image in time series to be viewed using the image viewing eyeglasses; a synchronization signal generator configured to generate a synchronization signal in synchronization with frame of the image, the synchronization signal including prescribed bit series to transmit bit data described by the presence or absence of a pulse; and a synchronization signal transmitter configured to transmit the synchronization signal, and the image viewing eyeglasses include: an optical filter portion configured to adjust an amount of light transmitted to a left eye and a right eye of a viewer; a synchronization signal receiver configured to receive the synchronization signal transmitted from the synchronization signal transmitter; a synchronization signal analyzer configured to detect the bit series, analyze a pattern of the bit series during a predetermined detection time when the synchronization signal analyzer detects the first pulse received by the synchronization signal receiver, and generate control data to control the optical filter portion; and an optical filter controller configured to control the optical filter portion with the control data.
摘要:
An optical disc recording apparatus for recording a video object onto an optical disc. A recording area of the optical disc is divided into a plurality of zones which each include a plurality of adjacent tracks. The optical disc recording apparatus includes: a reading unit for reading from the optical disc the sector information showing data assignment for sectors on the optical disc; a recording unit for recording the video object onto the optical disc; and a control unit for controlling the reading unit and the recording unit. The control unit detects at least one series of consecutive unassigned sectors on the optical disc by referring to the read sector information. Each series has a total size greater than a minimum size and is located within a single zone. The minimum size corresponds to a data amount that ensures uninterrupted reproduction of the video object. The control unit also controls the recording unit to record the video object into the detected series.
摘要:
The operating and other procedures of a disk or recording medium application system of the type for which a network is used are simplified. Disks or recording media have auxiliary data recording areas, where different IDs for individual disk, and/or cipher keys and/or decoding keys for ciphers are recorded in advance in a factory. By using the IDs to release the soft ciphers, and using the cipher keys when sending the ciphers, and using the decoding keys when receiving the ciphers, user authorization procedures are simplified.
摘要:
A host information memory is provided in a semiconductor memory card and a data write start address and a data size supplied by an access unit are stored. A free physical area generation section determines whether or not to perform erasing of an invalid block of a nonvolatile memory when writing of data based on the data write start address and data size, and determines the number of blocks to be erased. When erasing, writing of data and erasing of invalid blocks are simultaneously performed with respect to different memory chips. Erase process of data, herewith, can be optimized and high speed access from the access unit to a semiconductor memory card can be realized.