Apparatus for playback of data storage disks
AssigneeTEAC Corporation
InventorTetsuya Kato
Life of this patent
Estimating the term…
Abstract
A CD player for use with a CD having prerecorded thereon a series of tunes or tracks together with track numbers, and with a TOC which lists the prerecorded tunes with their starting addresses but, conventionally, with no ending addresses. The CD player comprises a RAM for storing the TOC read on the CD, a CPU for permitting the user to edit the TOC, and a preprogrammed RAM. After being stored on the RAM, the TOC from the disk is modified to include the ending addresses of the prerecorded tunes in addition to their starting addresses. The thus modified TOC is editable by the user for playback of any desired tune or tunes, either in part or in whole and in any desired order, permitting the customization of disk playback in a far more diversified way than heretofore.
Claims10
An apparatus for playback of a data storage compact disk of the type having a series of data streams and a TOC prerecorded in preassigned tracks thereon, each data stream being comprised of a series of frames each having a data region for storage of data and an address region for storage of the address of the frame in question in the track in question, the TOC on the disk listing the starting addresses of the data streams but not listing the ending addresses of the data streams, characterized in that the playback apparatus comprises:
- a transducer for reading the prerecorded data streams and TOC on the disk by relatively scanning the tracks thereon;
- a RAM connected to said transducer for rewritably storing the TOC read on the disk by said transducer;
- and
- data processing means connected to said RAM and said transducer for creating an expanded TOC by adding an ending address of each data stream to the original TOC which has been stored on said RAM and for controlling the scanning motion of the transducer with respect to the disk according to the expanded TOC, the expanded TOC being editable for causing said data processing means to play either whole or some desired part of any desired one of the data streams, wherein said data processing means comprises input means for inputting instructions for editing the TOC that has been stored on said RAM, ending address addition means for adding to the original TOC that has been stored on said RAM, as the ending address of each data stream, the staffing address of the next data stream, editing means for editing the expanded TOC on said RAM in response to the instructions that have been input on said input means, and control means for causing the disk to be played according to the edited TOC on said RAM.
Dependencies are inferred from the claim text.