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First Claim
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1. A sound reproducing apparatus, comprising:
- a recording means for recording into a recording medium a data file in which a sound signal encoded in a first format and a first decoding program according to said first format are stored;
a storing means for storing a second decoding program according to a second format;
a determining means for determining whether or not said first format of said sound signal is coincident with said second format of said second decoding program;
a validating means for validating one of said first decoding program and said second decoding program on the basis of a determination result of said determining means;
a decoding means for decoding said sound signal by the decoding program validated by said validating means; and
an outputting means for outputting the decoding sound signal decoded by said decoding means.
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Abstract
A sound reproducing apparatus (10) includes a slot (16) to which a memory card (18) is attached. A decoding software for decoding sound data is stored in an audio file recorded on the memory card (18). The decoding software is loaded into a RAM (22b) by a CPU (20) when it is not possible to decode the sound data by the decoding software stored on a ROM (22a). Therefore, a DSP (22) decodes sound data read from the same audio file in accordance with the decoding software loaded from the audio file.
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Citations
2 Claims
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1. A sound reproducing apparatus, comprising:
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a recording means for recording into a recording medium a data file in which a sound signal encoded in a first format and a first decoding program according to said first format are stored; a storing means for storing a second decoding program according to a second format; a determining means for determining whether or not said first format of said sound signal is coincident with said second format of said second decoding program; a validating means for validating one of said first decoding program and said second decoding program on the basis of a determination result of said determining means; a decoding means for decoding said sound signal by the decoding program validated by said validating means; and an outputting means for outputting the decoding sound signal decoded by said decoding means.
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2. A sound reproducing apparatus, comprising:
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an attacher for detachably attaching a recording medium on which a sound signal encoded in a first format and a first decoding program according to said first format are recorded; a storage for storing a second decoding program according to a second format; a determiner for determining whether or not said first format of said sound signal is coincident with said second format of said second decoding program; a validater for validating one of said first decoding program and said second decoding program on the basis of determination of result of said determiner; a decoder for decoding said sound signal by the decoding program validated by said validater; and an outputter for outputting a decoded sound signal decoded by said decoder;
whereinsaid decoder carries out a first number-of-bit operation, said recording medium records said first decoding program corresponding to said first number-of-bit operation and said second decoding program corresponding to a second number-of-bit operation, said validater loads said first decoding program corresponding to said first number-of-bit operation from said recording medium when said determination result represents disagreement, wherein said second decoding program is not recorded on said recording medium.
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Specification