Encoding apparatus and method, recording medium, and decoding apparatus and method
First Claim
Patent Images
1. An encoder comprising:
- means for generating a dummy string;
a first encoding means for generating a first code string by forming a blank area in a frame based on the dummy string;
a second encoding means for generating a second code string by encoding an input signal; and
a code string synthesizing means for generating a synthetic code string by embedding the second code string generated by the second encoding means in the blank area in the first code string.
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Abstract
The first codec-based dummy string generator 132 generates a first code-cbased dummy string in a first code string conforming to a first format based on the first coding method. The second codec encoder 131 generates a second code string having been encoded with a higher efficiency than the first code string and conforming to a second format different from the first format. The code string generator 133 generates a synthetic code string by embedding the second codec-based code string generated by the second codec encode block 131 in a blank area formed in the first code string based on the first codec-based dummy string generated by the first code dummy string generator 132.
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Citations
27 Claims
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1. An encoder comprising:
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means for generating a dummy string;
a first encoding means for generating a first code string by forming a blank area in a frame based on the dummy string;
a second encoding means for generating a second code string by encoding an input signal; and
a code string synthesizing means for generating a synthetic code string by embedding the second code string generated by the second encoding means in the blank area in the first code string. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An encoding method comprising:
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generating a dummy string;
generating a first code string by forming a blank area in a frame based on the dummy string;
generating a second code string by encoding an input signal; and
generating a synthetic code string by embedding the second code string generated by the second encoding means in the blank area in the first code string.
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9. An encoder comprising:
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a first encoding means for generating a first code string;
a second encoding means for generating a second code string; and
a code string synthesizing means for generating a synthetic code string in such a manner that a part of the second code string generated by the second encoding means forms a part of the first code string. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An encoding method comprising:
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generating a first code string;
generating a second code string; and
generating a synthetic code string in such a manner that a part of the second code string generated by the second encoding means forms a part of the first code string.
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16. A recording medium comprising:
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an encoder including;
a mechanism which generates a dummy string in a first code string;
a mechanism which forms a blank area in the first code string based on the dummy string; and
a mechanism which generates a synthetic code string by embedding a second code string recorded in the blank area formed in the first code string.
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17. A recording medium comprising:
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an encoder including;
a mechanism for generating a first code string and a second code string; and
a mechanism for synthesizing a synthetic code string so that a part of the second code string forms a part of the first code string.
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18. A decoder comprising:
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means for receiving a code string obtained by embedding a second code string in a blank area formed in a first code string based on a dummy string generated in the first code string;
means for detecting the dummy string from a synthetic code string received by a synthetic code string receiving means;
means for decoding the second code string; and
means for controlling output of a signal generated by decoding the second code string according to whether the dummy string detecting means has detected a predetermined dummy string. - View Dependent Claims (19, 20, 21)
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22. A decoding method comprising steps of:
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receiving a synthetic code string obtained by embedding a second code string in a blank area formed in a first code string based on a dummy string generated in the first code string;
detecting the dummy string from a synthetic code string received at a synthetic code string receiving step;
decoding the second code string; and
controlling output of a signal generated by decoding the second code string depending upon whether the dummy string detecting means has detected a predetermined dummy string.
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23. A decoder comprising:
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means for receiving a code string synthesized so that a part of a second code string forms a part of a first code string;
means for detecting a predetermined dummy string from a synthetic code string received by a synthetic code string receiving means;
means for decoding the second code string; and
means for controlling output of a signal generated by decoding the second code string depending upon whether the dummy string detecting means has detected the predetermined string. - View Dependent Claims (24, 25, 26)
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27. A decoding method comprising steps of:
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receiving a code string synthesized so that a part of a second code string forms a part of a first code string;
detecting a predetermined dummy string from a synthetic code string received at a synthetic code string receiving step;
decoding the second code string; and
controlling output of a signal generated by decoding the second code string depending upon whether the dummy string detecting means has detected the predetermined string.
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Specification