Compressed data processing apparatus and method and compressed data processing program
First Claim
1. A compressed data processing apparatus into which is input compressed data for which data restoration is performed by carrying out a first and a second decompression processing, the compressed data processing apparatus comprising:
- a compressed data acquisition unit that acquires a plurality of the compressed data as an object for synthesis, a plurality of first decompression processing units that perform the first decompression processing with respect to each of the plurality of compressed data acquired by the compressed data acquisition unit; and
a synthesis unit that synthesizes a plurality of intermediate data that were decompressed by the plurality of first decompression processing units.
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Accused Products
Abstract
A compressed data processing apparatus, a method thereof and a compressed data processing program that are capable of reducing a processing load and enhancing processing speed. A multitrack decompression apparatus 30 comprises compressed audio data read-in section 31, decompression processing sections 34, 35, and 37, and synthesis processing section 36. When two pieces of compressed audio data in MPEG-1 audio format are read-in by the compressed audio data read-in section 31, sectional decompression processing up to a step of inverse quantization processing is performed for each piece of data by decompression processing sections 34 and 35. Synthesis processing is performed by synthesis processing section 36 for two pieces of intermediate data obtained thus, and inverse frequency transformation processing is then performed for the intermediate data that underwent synthesis by decompression processing section 37 to produce non-compressed audio data.
9 Citations
16 Claims
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1. A compressed data processing apparatus into which is input compressed data for which data restoration is performed by carrying out a first and a second decompression processing, the compressed data processing apparatus comprising:
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a compressed data acquisition unit that acquires a plurality of the compressed data as an object for synthesis, a plurality of first decompression processing units that perform the first decompression processing with respect to each of the plurality of compressed data acquired by the compressed data acquisition unit; and
a synthesis unit that synthesizes a plurality of intermediate data that were decompressed by the plurality of first decompression processing units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. A compressed data processing apparatus into which is input compressed data for which data restoration is performed by carrying out a third decompression processing, characterized in that the compressed data processing apparatus comprises a compressed data acquisition unit that acquires a plurality of the compressed data as an object for synthesis, a synthesis unit that synthesizes the plurality of compressed data acquired by the compressed data acquisition unit, and a third decompression processing unit that performs the third decompression processing for compressed data that has undergone synthesis that is output from the synthesis unit.
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11. A compressed data processing method of a compressed data processing apparatus comprising a compressed data acquisition unit that acquires a plurality of compressed data for which data restoration is carried out by performing a first and a second decompression processing, a plurality of first decompression processing units that perform the first decompression processing for each of the plurality of compressed data acquired by the compressed data acquisition unit, and a synthesis unit that synthesizes a plurality of intermediate data that were decompressed by the plurality of first decompression processing units, the method comprising the steps of:
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acquiring a plurality of compressed data by means of the compressed data acquisition unit;
performing the first decompression processing for each of the acquired plurality of compressed data by means of the first decompression processing units; and
performing synthesis processing by means of the synthesis unit using a plurality of intermediate data that are obtained upon completion of the first decompression processing. - View Dependent Claims (12, 13)
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14. A computer-readable program for processing compressed data for making a computer function as:
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a compressed data acquisition unit that acquires a plurality of compressed data for which data restoration is performed by carrying out a first and a second decompression processing;
a plurality of first decompression processing units that perform the first decompression processing for each of the plurality of compressed data acquired by the compressed data acquisition unit; and
a synthesis unit that synthesizes a plurality of intermediate data that were decompressed by the plurality of first decompression processing units, to synthesize a plurality of compressed data. - View Dependent Claims (15, 16)
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Specification