Sony Corporation

Tetsu Kimura

Akio Ishikawa

Kazuhiro Suzuki

Shoei Kobayashi

Toru Takeda

Tetsuo Yutani

Norichika Mine

A display device comprising a CPU, displays sectionand a video memory. The video memorystores data about the character data and image data that the application software processes in an absolute coordinate system. The display sectiondisplays the character data and the image data, both based on the data stored in the video memory. The CPUcontrols the writing of data from the application software into the video memoryand the reading of data from the video memoryto the display section

Display device, display method, program recording medium, and program

The invention provides a file system which can record and/or record AV signals simply onto and/or from a disc in a home. The file system is incorporated in a recording and/or reproduction apparatus which uses a disc type recording medium, and records management information for management of a file of AV data to at least two locations of a logical volume.

Recording and/or reproduction apparatus, file management method and providing medium

An information recording apparatus for recording data into a recording medium taking as recording unit a sector corresponding to a predetermined amount of information signal, comprises a file management unit ( ) to classify an information signal for recording into the recording medium ( ) into a number, two or more, of groups depending upon the importance of the information signal, and a write/read unit ( ) to record the information signal into the recording medium ( ) while dealing with a defective sector, if any, in the recording medium ( ) in a manner designated for the group to which the information signal has been classified to belong at the above classifying step, and record a highly important information signal, when a defective sector is found by checking up the information signal recorded in the recording medium ( ), into another sector.

Information recording method and apparatus

A recording and reproduction apparatus and method for recording and reproducing different types of data including AV data and PC data on a disc type medium. The type of the recorded data determines the length of recording units used to record the data on the disc. Management information including identification indicating one of the respective types of data is stored at least at two location of a logical volume.

System and method for determining respective lengths of recording units used for recording different types of data on disc medium

A file management apparatus and method for managing the files of audio and/or video data to be recorded on or reproduced from a recording medium. The file management apparatus includes a first apparatus for managing a master file recorded on the medium and a second apparatus for designating at least part of the master as at least shared element. The apparatus also includes a third apparatus for managing one or more of the shared elements as one or more shared files in order to enable a plurality of the shared files to refer to the same shared element.

File management apparatus and method, and recording medium including same

The present invention provides a finalization method and apparatus which enables out a reproduction of an optical disk such as a DVD-RAM by using a reproduction apparatus which carries out CLV reproduction. The finalization method according to the present invention includes creating an unrecorded area map of an optical disk on the Logical block address (LBA). In order to execute in the host application a conversion from LBA to Physical Block Address (PBA) which is normally executed in an optical disk drive, a conversion table from LBA to PBA is created. According to this conversion table, the unrecorded area map is converted from LBA into PBA so as to assure the area to be finalized. A dummy data is recorded in the aforementioned assured area of the optical disk.

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Kanagawa, Japan

Tetsu Kimura