Abstract:
A disklike storage medium on which information is recorded at higher density by reducing the redundancy of the address part and a tracking method using the medium are disclosed. The disklike storage medium where a track is divided into areas and address data is recorded in the areas is so adapted that an error detecting code for identifying the data common to adjacent tracks out of the address data is added to the common data. Thus, a data synchronization processing performed when the address data is reproduced is realized without any special synchronization pattern.
Abstract:
A data processing device records an audio frame corresponding to an audio gap interval of a connection point together with audio reproduction control information in a post-recording area. The audio containing the audio frame of the connection point is reproduced. Moreover, the audio is reproduced while performing fade-in/fade-out according to the audio reproduction control information. This guarantees a seamless reproduction having no audio disconnection when reproducing a play list obtained by re-encoding the connection point on the MPEG program stream recorded on the disc.
Abstract:
A file management method has highly general versatility among applications, does not waste recording area, and facilitates handling of volumes of discrete and grouped files and group information. A recording medium for use in the file management method. A contents management file (CMF) is provided for collectively all of necessary files and all groups, so that application can deal with volumes of filed on a disk through CMF without direct communication with the file systems and a necessitating the grouping can be performed in highly general versatility.
Abstract:
For multiple moving-image recorded on a storage medium, one piece of meta-data or each of multiple pieces of meta-data recorded for a part or all of the moving-image is managed by meta-data indices. A meta-data index keeps invalidity information indicating whether a piece of meta-data is going to be invalid and validity information indicating validity of the current piece of meta-data in the same form, when operations such as editing and processing are performed on a part or all of a moving-image that is an object of a piece of meta-data. When cutting-out occurs on a section of a moving-image that is an object of a piece of meta-data and the piece of meta-data cannot be recalculated, the invalidity information is copied to the validity information. In this manner, a meta-data added to the moving-image can be adapted and be used after the moving-image is edited.
Abstract:
A disklike storage medium on which information is recorded at higher density by reducing the redundancy of the address part and a tracking method using the medium are disclosed. The disklike storage medium where a track is divided into areas and address data is recorded in the areas is so adapted that an error detecting code for identifying the data common to adjacent tracks out of the address data is added to the common data. Thus, a data synchronization processing performed when the address data is reproduced is realized without any special synchronization pattern.
Abstract:
A method for AV data recording is provided in which seek operation is minimized if a file system of UDF is used. The method uses file management information in order to manage consecutive blocks on a disk as extents and to manage groups of extents as files. A new directory is created on a disk, and an allocated blank extent is kept as a reserve area to record the file management information.
Abstract:
An AV data recording device and method therefor easy to perform various processings (continuous reproduction, digital transmission, file handling, partial deletion, after recording). The AV data recording device divides voice signals and video signals into transport packets having specified unit lengths, and assembles the plurality of transport packets as transport streams for recording, wherein whether or not a logical block is used is managed, continuous data areas consisting of a plurality of logical blocks for ensuring real-time continuous reproduction are detected, logical block numbers in continuous data areas to be recorded can be designated, and transport streams are continuously recorded in a plurality of detected continuous data areas.
Abstract:
A file managing method for reducing the seek operation to a minimum even if a UDF file system is used. The method uses file management information for managing continuous blocks on a disk as extents and grouping the extents into files to manage them, wherein when a new directory is created on the disk, a file area or a data area is ensured in the directory as a reserved area to record the file management information, and a file entry and a file identification descriptor of the directory is ensured as a directory block in the directory block having a predetermined size in the reserved area.
Abstract:
Conventionally, in order to join films used as insulating layers of a multilayer circuit board, an adhesive is used, and this adhesive might adversely influence the thinning of the multilayer circuit board. In the invention, double-sided boards using films are bonded through paste connection layers produced by filling through holes formed in prepreg with a conductive paste and by curing the conductive paste, and second wirings are electrically interconnected through the conductive paste in through holes previously formed in the paste connection layers. Thus, a multilayer board can be produced without using any adhesive, and the multilayer circuit board can be thinned as a whole.