Abstract:
A disk cartridge has a shutter, which is fitted to a plastic slider so that it can slide on the cartridge shell. The shutter includes a plurality of holes in its portion in contact with the slider, and a plurality of pins inserted into the holes. The pins have large-diameter heads and the heads press the shutter against the slider. The heads of the pins are formed by plastic deformation.
Abstract:
A recording device and a reproducing device by which the storage space of tapes can be small by changing the image compression ratio maintaining the image quality of a material required by the user. Since the ratio of compression of an image performed by a (1:N) image data compressing encoder (3) and a (1:N) picture data compressing decoder (6) is changed in accordance with the image quality set by means of a setter (5) by the user. The tape movement speed of an archive VTR 4 is changed in accordance with the image compressing ratio. The amount of tape moved is arbitrary set in accordance with the image quality. Therefore the storage space of tapes can be arbitrarily selected in accordance with the picture quality.
Abstract:
It is an object of the present invention to reduce the size of a disk recording and/or reproduction apparatus which selectively takes one out of a plurality of disks and moves it to a recording/reproduction portion. This recording and/or reproduction apparatus includes a storage portion for storing a plurality of disks and driven up and down by a lift mechanism; a transfer mechanism for selectively taking out a disk from the storage portion and putting it back to the storage portion store; a main tray having a support portion for receiving a disk and moving between a first position protruding from an apparatus body and a second position accommodated inside the apparatus body; and a recording and/or reproduction portion for executing recording and/or reproduction of information to and from the disk placed on the support portion of the main tray. The distance between the center of the support portion of the main tray moved to the second position and the center of the disk stored in the storage portion is smaller than the diameter of the disk, and the disk opposing the transfer mechanism stored in the storage portion moved up and down by the lift mechanism is positioned at a higher position by a predetermined distance than the disk placement surface.
Abstract:
In an animation encoding method, an animation decoding method, an animation recording medium and an animation encoder, the present invention suppresses the reduction of information having a fine image pattern while reducing a mosquito noise even in a signal band in which an S/N ratio is low. An animation signal is encoded by using a predetermined anticipation image signal, applying a predetermined operation to the signal so encoded, quantizing the signal obtained by the operation and the signal so quantized is subjected to variable length encoding. In this instance, the signal band in which the S/N ratio of the image signal drops is quantized and highlighted on the basis of non-linear characteristics. On the decoding side, on the other hand, decoded signals are reversely quantized on the basis of non-linear characteristics having opposite characteristics to the encoding side, and decoding is effected.
Abstract:
An interruption controller (1) which uses an RISC, etc., which commonly performs the same interruption at a plurality of interrupt terminals and can efficiently perform a plurality of interruptions. In the controller (1), interruption control data respectively corresponding to interrupt signal holding circuits (26a1-26an) are stored in a memory circuit (34) in the form of a table. A program for commonly controlling interruption when any one of interrupt signals is detected and an interruption processing program corresponding to the interrupt signals are stored in the circuit (34) in a state that a system call can be performed. When an interruption controller (12) in an RISC processor (10) detects an interrupt signal, the common interruption control program specifies an interrupt signal inputted to the circuits (26a1-26an) and actuates the corresponding interruption processing program.
Abstract:
Data are recorded on an optical disk (1) by adding double parities of internal and external parities to the data. The internal parity is added to interleaved data and used for the correction of internal codes, and the external parity is added to non-interleaved data and the internal parity and used for the correction of the external codes. Reproduced data from the disk (1) are supplied to and stored in a ring buffer memory (5) and, at the same time, supplied to an error correction circuit (71) which corrects the errors in the external codes. The correction results are supplied to the memory (5) and overwritten therein. The data stored in the memory (5) are again read out to the circuit (71) and the errors in the internal codes are corrected. For sector address detection by a sector detection circuit (72), the data of which the errors of the external codes are corrected are used. In special reproduction, only the external code correction is performed.
Abstract:
Coiled springs (96, 97) for absorbing backlashes occurring between a rack (55) and a driving gear (59a) are included in a driving transmission gear (61). Since the backlashes occurring between the driving gear (59a) and rack (55) are absorbed in the coiled springs (96, 97), the phase matching of the teeth of the single driving transmission gear (61) is only needed during an assembling operation. Accordingly, the assembling operation can be simplified, and the assembling time can be reduced. Since the coiled springs are not contained in the rack (55), the width of the rack (55) can be set to a low level, and a head transfer loss can be minimized by reducing the moment around a connecting point which is exerted on an optical head carriage (53).
Abstract:
A device and method for encoding an image into hierarchical codes. Since the quantizing step width of lower hierarchical data having a higher resolution than that of higher hierarchical data is determined, on the basis of the quantizing step widths determined for the higher hierarchical data having a lower resolution, for every prescribed block of hierarchical data, additional codes indicating the characteristics of quantizers can be eliminated. Therefore the compression efficiency at the time of encoding can be improved and the deterioration of image quality can be reduced.
Abstract:
A tape recorder records and/or reproduces information signals by bringing a magnetic tape into sliding contact with a magnetic head on a rotary head mechanism. This tape recorder comprises a rotary head mechanism including a rotating drum fitted with a magnetic head for bringing the head into sliding contact with running tape, and a fixed drum coaxial with the rotating drum for rotatably supporting the latter; a pair of supporting members rotatably supported on the rotary head mechanism; a pair of capstans rotatably mounted on ends of the supporting members; and a pair of pinch rollers opposed to the corresponding capstans. The pair of supporting members are rotated in accordance with the direction in which the magnetic tape travels. Either one of the capstans is selectively moved toward either one of the pair of the pinch rollers in order to pinch the magnetic tape between the capstan and pinch roller. Further, the capstan and pinch roller cooperate to drive the magnetic tape, thus implementing the switch over in the traveling direction of the magnetic tape.
Abstract:
A signal encoding device which encodes acoustic signals is provided with a conversion circuit (601) which converts inputted acoustic signals into frequency components, signal component separation circuit (602) which separates the output of the circuit (602) into tone and noise components, tone component encoding circuit (603) which encodes tone-component signals, and noise component encoding circuit (604) which encodes noise-component signals. The encoding efficiency of the signal encoding device is improved without deteriorating the tone quality of the tonal acoustic signals, because the circuit (603) encodes (601) the signal components of the tone-component signals into codes having different code lengths.