637results about "Magneto-optical discs" patented technology

A portable canister for upgrading, converting, or servicing an automated data storage library includes an assembly with cartridge cells. The portable canister is mounted within a data storage drive compartment, and / or another slot within the automated data storage library. The storage capacity of the library may be increased by adding portable storage canisters. When occupying a data storage drive slot, the portable storage canister may be removed and replaced with a data storage drive. Dual accessor library expansion may be simplified by using the portable canister as a test canister in the service bay of the library. Any library frame or storage module may become the service bay simply by inserting a test canister into the frame or storage module. This eliminates the need to shut down the library and reconfigure the frames to relocate the service bay.

A recording medium that is a write-once recording medium with data rewritability, thereby increasing the usability of the write-once recording medium, is provided. In a write-once recording medium, a main data area has a normal record and playback sub-area (a user data section), a rewriting replacement sub-area (an OSA), and a replacement management sub-area (an ISA). In response to a request to write data to an address at which data has been recorded, the rewritten data is recorded in the rewriting replacement sub-area (the OSA), and replacement management information that associates the original address with the address in the rewriting replacement sub-area is recorded into the replacement management sub-area (the ISA). Thus, data rewriting is achieved. Accordingly, a write-once recording medium can be substantially used as a data rewritable recording medium.

An image detecting apparatus has an edit function with good operability and compatibility. When a chapter mark key on a remote control is pressed while an image reproducing system including an MPEG video decoder, a video signal post-processing circuit, a combining circuit, and an NTSC encoder is reproducing image data recorded on a recording medium, a CPU obtains information for identifying the image being reproduced and displayed, and then records the information on the recording medium. With reference to the image provided with a chapter mark, a still image generating circuit displays reduced still images, for example, so that a target image can be specified. Reproduction and editing can be performed with reference to the specified image.

A storage medium includes a first area configured to have data stored therein in a first recording format; a second area configured to have data stored therein in a second recording format; a management table configured to manage a replacement area for a defect area in a data area in the storage medium, the management table being stored in the second area; an alert track stored in the first area; and a management data configured to manage the managing table and the alert track, the management data stored in the first area, wherein an end position of the first area is set a predetermined distance apart from a start position of the second area.

This invention provides a technique that deletes data at high speed, and prevents discontinuous cluster chains from being produced due to data deletion. To accomplish this, when data included in the data file is partially deleted from the head of the data file, the location of header information is moved for respective clusters, and the size of the header information is changed, so as to start head data after data deletion from the location immediately after the moved header information.

A portable recording and / or reproducing apparatus for recording and / or reproducing data to and / or from a storage medium are provided. The medium has a data area and a management area. The data area stores data and the management area stores management information for managing the data. The apparatus includes stopping means for stopping reproduction of the data according to a user's input. Updating means for updates the management information so that an address of the storage medium corresponding to the stop position of the reproduced data determined by the user's input becomes the end address of the reproduced data.

A near video-on-demand (VOD) service enabled using a digital video recorder (DVR) for the simultaneous storage and playback of multimedia data. A DVR is connected over a network to a multimedia network source. A VOD selection is requested by the DVR from the network source. A multimedia data signal is received by the DVR from the network source. The data signal contains the requested VOD selection. A first received portion of the received data signal is stored on the DVR. The first received segment is played by the DVR for display on a display device. Simultaneously during the playing of the first received segment, a second received segment of the received data signal is received from the network source and stored on the DVR while the first received segment is played the display device. Thus, the requested VOD selection begins playing on the display device prior to the reception of the entire compressed multimedia data signal so that a requested VOD selection can begin being displayed nearly instantaneously after the request for it is made. A video-on-request (VOR) service is also enabled using a DVR. VOR selection data is received by a centralized database device, such as a network server, from a plurality of users. Each VOR selection data includes at least one requested video selection and video recorder identifying information for identifying each particular video recorder. A transmission priority of requested video selections is determined dependent on the frequency of requests received from the plurality of users. A transmission channel and time is determined based on the transmission priority. DVR control signals are transmitted to automatically tune in the determined transmission channel at the determined transmission time and record the particular video selection.

Music is blanket transmitted (for example, via satellite downlink transmission) to each customer's computer-based user station. Customers preselect from a list of available music in advance using an interactive screen selector, and pay only for music that they choose to have recorded for unlimited playback, for example, by a “CD burner”. An “ID tag” is woven into the recorded music so that any illegal copies therefrom may be traced to the purchase transaction.

An editing apparatus wherein the editing of content is controlled according to its supply source. Identification information for identifying a content supply source is recorded in a recording medium in correspondence with the content supplied from the content supply source and recorded in the recording medium. When editing of the content is requested by a user, the identification information corresponding to that content is checked. According to the content supply source identified by the identification information, the editing of the content is enabled or disabled.