Playback device
AssigneePanasonic Corporation
InventorsNaoki Hori, Norio Hatanaka
Life of this patent
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Abstract
Disclosed is a playback device capable of audio playback with little or no interruption. Yet, there is no need of increasing the memory capacity of the playback device and sacrificing the usability of the playback device. The playback device stores, to its internal memory, identification information of audio data stored on a recording medium such as an optical disc, and specifying information specifying the storage location of the identification information. The playback device sequentially stores the audio data to a remaining area of the memory. The audio data stored in the memory is supplied for playback.
Claims18
A data storage method for reading, from a recording medium, a plurality of pieces of audio data for execution of playback by a playback device, with a plurality of pieces of management information each corresponding to one of the pieces of audio data, and storing the read pieces of audio data into a storage unit of the playback device, the storage unit having a management information area for storing management information and an audio data area for storing audio data, the method sequentially comprising:
- a default setting step of setting a capacity of the audio data area by a control unit of the playback device,
- a management information storing step of sequentially storing pieces of read management information and storing specifying information specifying a storage location of each of the pieces of read management information into the management information area of the storage unit;
- a re-setting step of decreasing the capacity of the audio data area if the management information area becomes full before all pieces of read management information are stored;
- and
- an audio data storing step of storing the pieces of read audio data into the audio data area having the capacity effective upon completion of the reading of management information from the recording medium,
- wherein data space available for each piece of management information stored in the management information area of the storage unit is variable according to an amount of information included in each piece of management information.
A data storage method for reading, from a recording medium, a plurality of pieces of audio data for execution of playback by a playback device, with a plurality of pieces of management information each corresponding to one of the pieces of audio data, and storing the read pieces of audio data into a storage unit of the playback device, the storage unit having a management information area for storing management information and an audio data area for storing audio data, the method sequentially comprising:
- a default setting step of setting a capacity of the audio data area by a control unit of the playback device,
- a management information storing step of sequentially storing pieces of read management information and storing specifying information specifying a storage location of each of the pieces of read management information into the management information area of the storage unit;
- a re-setting step of increasing the capacity of the audio data area by re-defining each part of the management information area storing no management information as an additional part of the audio data area if all pieces of read management information are stored;
- and
- an audio data storing step of storing the pieces of read audio data into the audio data area having the capacity effective upon completion of the reading of management information from the recording medium,
- wherein data space available for each piece of management information stored in the management information area of the storage unit is variable according to an amount of information included in each piece of management information.
Dependencies are inferred from the claim text.