Source: http://www.patentsencyclopedia.com/app/20080275712
Timestamp: 2017-08-17 14:00:36
Document Index: 319322098

Matched Legal Cases: ['arts 332', 'art 332', 'art 333', 'art 710', 'art 710', 'arts 742', 'art 742', 'art 743']

Patent application number: 20080275712
An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value; and obtaining the gain using the pilot reference value and the pilot difference value.
1. A method of processing a signal, comprising the steps of:Obtaining from the signal a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value; andobtaining at least one gain from the plurality of gains using the pilot reference value and the pilot difference value.
2. The method of claim 1, further comprising the step of decoding at least one of the pilot difference value and the pilot reference value.
10. An apparatus for processing a signal, comprising:a value obtaining part configured for obtaining from the signal a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value; anda gain obtaining part configured for obtaining the gain using the pilot reference value and the pilot difference value.
11. A method of processing a signal, comprising the steps of:generating a pilot difference value using a pilot reference value corresponding to a plurality of gains and the gains, where in the pilot reference value is obtained from the signal; andtransferring the generated pilot difference value.
12. An apparatus for processing a signal, comprising:a value calculating part configured for generating a pilot difference value using a pilot reference value corresponding to a plurality of gains and the gains, wherein the pilot reference value is obtained from the signal; andan outputting part transferring the generated pilot difference value.
[0011]To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a method of processing a signal according to the present invention includes the steps of obtaining a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value and obtaining the gain using the pilot reference value and the pilot difference value.
[0012]The method further includes the step of decoding at least one of the pilot difference value and the pilot reference value. And, The method further includes the step of reconstructing an audio signal using the obtained gain.
[0013]The pilot reference value is obtained from one of an average of a plurality of the gains, an approximate value of the average, an intermediate value of a plurality of the gains, a most frequently used value of a plurality of the gains, a value set to a default and one value extracted from a table.
[0014]The method further includes the step of selecting the gain having highest encoding efficiency as a final pilot reference value after the pilot reference value has been set to each of a plurality of the gains.
[0015]To further achieve these and other advantages and in accordance with the purpose of the present invention, an apparatus for processing a signal includes a value obtaining part obtaining a pilot reference value corresponding to a plurality of gains and a pilot difference value corresponding to the pilot reference value and a gain obtaining part obtaining the gain using the pilot reference value and the pilot difference value.
[0016]To further achieve these and other advantages and in accordance with the purpose of the present invention, a method of processing a signal includes the steps of generating a pilot difference value using a pilot reference value corresponding to a plurality of gains and the gains and transferring the generated pilot difference value.
[0017]To further achieve these and other advantages and in accordance with the purpose of the present invention, an apparatus for processing a signal including a value calculating part generating a pilot difference value using a pilot reference value corresponding to a plurality of gains and the gains and an outputting part transferring the generated pilot difference value.
[0522]The channel grouping information 100c means `OttmodeLFE-bsOttBands` field and `bsTttDualmode-bsTttBandsLow` field. The `OttmodeLFE-bsOttBands` field is the information designating a number of parameter bands applied to LFE channel. And, the `bsTttDualmode-bsTttBandsLow` field is the information designating a number of parameter bands of a low frequency band within a dual mode having both low and high frequency bands. Ye, the `bsTttDualmode-bsTttBandsLow` field can be classified not as channel grouping information but as frequency grouping information.
[0605]In the HUFF--2D parts 332 and 333, a selected one of the HUFF--2D_FREQ_PAIR part 332 and the HUFF--2D_TIME_PAIR part 333 performs a Huffman coding processing on an input.
[0612]The identifier parsing part 710 of the spatial information decoding part extracts various identifiers from a transport bitstream and then parses the extracted identifiers. This means that various kinds of the informations mentioned in the foregoing description of FIG. 23 are extracted.
[0624]The identifier parsing part 710 extracts an identifier (e.g., `bsDiffType`) indicating whether a DIFF scheme is DIF_FREQ or DIF_TIME from a transport bit stream from a transport bitstream and then recognizes the used DIFF scheme by parsing the extracted identifier. So, one of the DIFF_FREQ decoding and DIFF_TIME decoding corresponding to the respective cases is decided as a differential decoding scheme.
[0628]In the DIFF_TIME decoding parts 742 and 743, the DIFF_TIME_FORWARD part 742 performs DIFF_TIME_FORWARD decoding and the DIFF_TIME BACKWARD part 743 performs DIFF_TIME_BACKWARD decoding.