Signal processing method and apparatus, and code string generating method and apparatus
OwnerKyoya Tsutsui, Naoya Haneda +1inventors
InventorsKyoya Tsutsui, Naoya Haneda, Kenzo Akagiri
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Abstract
A signal of a first code string, in which a code string in a predetermined format is partially replaced with dummy data, is transferred to a code string rewriting unit via a code string decomposition unit. A signal of a second code string for replacing the dummy data in the signal of the first code string is transferred to a control unit, and the amount of dummy data in a mid-range spectrum is calculated in a mid-range spectrum dummy data amount calculation unit. The control unit transfers data for replacing the dummy data to the code string rewriting unit, where the dummy data in the first code string is rewritten therewith.
Claims18
A signal processing method for playing or recording a code string obtained by encoding a signal on a frame-by-frame basis, the signal processing method comprising:
- a first code string input step of inputting a first code string in which the code string is partially replaced with dummy data;
- a second code string input step of inputting a second code string;
- a processing step of executing a predetermined process on each unit of a predetermined amount of data of the second code string;
- a rewriting step of rewriting the dummy data in the first code string with the second code string to replace the dummy data;
- and
- a decoding step of decoding the rewritten code string;
- wherein, in the second code string, an amount of data relating to or associated with one frame of the original code string is an integer multiple of the predetermined amount of data.
A signal processing apparatus for playing or recording a code string obtained by encoding a signal on a frame-by-frame basis, the signal processing apparatus comprising:
- first code string input means for inputting a first code string in which the code string is partially replaced with dummy data;
- second code string input means for inputting a second code string;
- processing means for executing a predetermined process on each unit of a predetermined amount of data of the second code string;
- rewriting means for rewriting the dummy data in the first code string with the second code string to replace the dummy data;
- and
- decoding means for decoding the rewritten code string;
- wherein, in the second code string, an amount of data relating to or associated with one frame of the original code string is an integer multiple of the predetermined amount of data.
A code string generating method comprising:
- an encoding step of encoding an input signal to generate a code string in a predetermined format;
- a first code string generating step of rewriting part of the code string in the predetermined format with dummy data to generate a first code string;
- and
- a second code string generating step of generating a second code string including the part of the code string in the predetermined format, having been replaced with the dummy data;
- wherein, in the second code string, an amount of data relating to or associated with one frame of the original code string is an integer multiple of the predetermined amount of data.
A code string generating apparatus comprising:
- encoding means for encoding an input signal to generate a code string in a predetermined format;
- first code string generating means for rewriting part of the code string in the predetermined format with dummy data to generate a first code string;
- and
- second code string generating means for generating a second code string including the part of the code string in the predetermined format, having been replaced with the dummy data;
- wherein, in the second code string, an amount of data relating to or associated with one frame of the original code string is an integer multiple of the predetermined amount of data.
Dependencies are inferred from the claim text.