RECORDING MEDUIM PLAYBACK APPARATUS

• US 20070233998A1
• Filed: 06/07/2007
• Published: 10/04/2007
• Est. Priority Date: 08/11/2003
• Status: Active Grant

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Yamaguchi, Tatsuya, Tabuchi, Jyun
• Granted Patent: US 7,962,701 B2
• Time in Patent Office: Days
• US Class Current: 711/171
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 27/105 of operating discs

Abstract

In one aspect of the invention, text data recorded on a CD conforming to the CD-TEXT format is displayed using a minimum amount of memory. Storage capacity to be used per data item is calculated by dividing the available storage capacity by the number of text data items to be displayed on a display section, and the text data is read from the CD and is stored in a memory by limiting the storage capacity per data item to the thus calculated storage capacity. Priority may be given to a specific data item for which full data is acquired, and the remaining capacity may be equally divided among the other data items. In another aspect of the invention, text data recorded in a plurality of different languages on a CD conforming to the CD-TEXT format is acquired in as many languages as possible by using a minimum amount of memory. A block selected based on a predetermined criterion, such as the starting block or a block recorded in a specific language, is acquired first, and then a further block or blocks are selected and acquired as the remaining memory capacity allows.

Claims

1. A recording medium playback apparatus comprising:

a memory for storing data comprising a plurality of data items read from a recording medium for output at a later time;

storage capacity determining means for determining a storage capacity of the memory to be used per data item, based on a result obtained by dividing an available storage capacity of the memory by the number of data items to be displayed; and

means for reading the data from the recording medium and storing the data in the memory by limiting the storage capacity per data item to the determined storage capacity.

2. A recording medium playback apparatus according to claim 1, further comprising:

storage capacity reserving means for predetermining, for at least one data item, the storage capacity of the memory to be used per data item;

wherein the storage capacity determining means determines for the remaining data items the storage capacity of the memory to be used per data item, based on a result obtained by dividing the difference between the available storage capacity and the predetermined storage capacity by the number of remaining data items.

3. A recording medium playback apparatus according to claim 2, wherein the data item for which to predetermine the storage capacity to be used per data item is specified by a user.

4. A recording medium playback apparatus according to claim 1, wherein a plurality of tracks of audio playback digital data are further recorded on the recording medium, and each of the plurality of data items corresponds to one of the plurality of tracks.

5. A recording medium playback apparatus comprising:

a memory for storing data comprising a plurality of data items read from a recording medium for output at a later time; and

means for reading out the data items in a predetermined sequence from the recording medium and storing the readout data in the memory as the available capacity of the memory allows.

6. A recording medium playback apparatus according to claim 5, wherein the data items are read out in the predetermined sequence in increasing order of data size.

7. A recording medium playback apparatus according to claim 5, wherein a plurality of tracks of audio playback digital data are further recorded on the recording medium, and each of the plurality of data items corresponds to one of the plurality of tracks.

8. A recording medium playback apparatus comprising:

a memory for storing data comprising a plurality of data items read from a recording medium for output at a later time; and

storage means for reading the data from the recording medium and storing the data in the memory by limiting the amount of data of each data item to the amount of data that can be output per data item.

9. A recording medium playback apparatus according to claim 8, wherein a plurality of tracks of audio playback digital data are further recorded on the recording medium, and each of the plurality of data items corresponds to one of the plurality of tracks.

10. A recording medium playback apparatus comprising:

a memory for storing data comprising a plurality of data items read from a recording medium for output at a later time; and

readout storage means for reading data of a designated one of the data items from the recording medium for storage in the memory as it becomes necessary to output the data item.

11. A recording medium playback apparatus according to claim 10, wherein a plurality of tracks of audio playback digital data are further recorded on the recording medium, and each of the plurality of data items corresponds to one of the plurality of tracks.