Music playback system and music playback machine
First Claim
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1. A music playback system comprising:
- a memory device that comprises a memory area for audio files that contain audio data and a header, which is data for managing the audio data;
a first LSI that comprises a header information analysis unit that reads and analyzes a header from said memory device;
a second LSI that reads and plays back the audio data from the memory device based on the header analysis result by the header information analysis unit; and
a header analysis result storage unit;
wherein the first LSI saves the header analysis result from the header information analysis unit in the header analysis result storage unit, and then moves to an energy saving state; and
the second LSI reads and plays back the audio data that is saved in the memory device based on the header analysis result that is saved in the header analysis result storage unit while the first LSI is in energy-saving state.
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Abstract
A first LSI moves to an energy saving state after saving the header analysis result from a header information analysis unit in a header analysis result storage unit. While the first LSI is in the energy-saving state, a second LSI reads and plays back audio data that is stored in a memory device based on the header analysis result that is saved in the header analysis result storage unit.
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Citations
16 Claims
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1. A music playback system comprising:
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a memory device that comprises a memory area for audio files that contain audio data and a header, which is data for managing the audio data; a first LSI that comprises a header information analysis unit that reads and analyzes a header from said memory device; a second LSI that reads and plays back the audio data from the memory device based on the header analysis result by the header information analysis unit; and a header analysis result storage unit;
wherein the first LSI saves the header analysis result from the header information analysis unit in the header analysis result storage unit, and then moves to an energy saving state; andthe second LSI reads and plays back the audio data that is saved in the memory device based on the header analysis result that is saved in the header analysis result storage unit while the first LSI is in energy-saving state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 15)
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8. A music playback system comprising:
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a memory device that comprises a memory area for audio files that contain audio data and headers, which are data for managing the audio data, and a header analysis result storage unit; a first LSI that has the memory device save the audio files; and a second LSI that comprises a header information analysis unit that analyzes the headers and reads and plays back audio data from the memory device based on the header analysis result from the header information analysis unit;
whereinthe first LSI sends the second LSI a request for saving the audio file that was read by the second LSI in the memory device; the second LSI receives the saving request, and has the header information analysis unit analyze the header, and save the header analysis result in the header analysis result storage unit of the memory device; the first LSI moves to an energy-saving state each time the process of saving a header analysis result is completed, and repeats the saving request every time when there is an audio file to be saved next while in the energy-saving state, and also moves to the energy-saving state after giving a playback instruction to the second LSI if the second LSI plays back the audio file that is saved in the memory device when the first LSI is on its way to the energy-saving state; and the second LSI reads and plays back audio data that is saved in the memory device based on the header analysis result saved in the header analysis result storage unit while the first LSI is in the energy-saving state. - View Dependent Claims (14, 16)
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Specification