Data processor

摘要

To provide means for editing a content data stream quickly.;A data processor according to the present invention can edit a content that has been written on a medium. The content is stored in a file as a data stream including multiple packets of the same packet size. And a file system for accessing data on a cluster size basis has been established on the medium. The data processor includes: a receiving section, which receives an instruction on a partial deletion range including the beginning of the file; and a media control section for deleting data, the size of which is an integral number of times as large as the least common multiple of the cluster size and the packet size, from the beginning of the file within the partial deletion range.

主权项

1. A data processor for editing a content that has been written on a medium,
the content being stored in a file as a data stream including multiple packets of the same packet size, the data processor comprising: a receiving section, configured to receive an instruction on a partial deletion range including the end of the file; and a media control section configured to determine data within the partial deletion range on a packet size basis, and to delete the data from the end of the file; wherein: the data stream in the file includes multiple key picture playback units, each of which has a first picture and at least one second picture to be decoded from the first picture, and the media control section determines and deletes the data of an imperfect key picture playback unit located at the end of the data stream in the file on the packet size basis.