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AssigneeSamsung Electronics Co., Ltd.
InventorsShin-jun Lee, Seok-yoon Jung, Euee-seon Jang, Sang-oak Woo, Mahn-jin Han, Do-kyoon Kim, Gyeong-ja Jang
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An apparatus and a method for encoding and decoding key data are provided. An apparatus for encoding DPCMed differential data of key data includes a DND operator which performs on input differential data a predetermined number of times a DND operation, in which a divide operation is performed on the input differential data so as to divide differential data belonging to a positive number region into halves and so as to convert one half of the differential data belonging to an upper range than the other half into negative values, and either a divide-up operation or a divide-down operation is selectively performed on the results of the divide operation depending on the range of the results of the divide operation so as to reduce the range of differential data belonging to a negative number region or the positive number region, respectively, a shift-up operator which performs a shift-up operation on the results of the DND operation so as to transfer the differential data having been through the DND operation to either the positive or negative number region, a differential data selector which selectively outputs either the differential data having been through the DND operation or the differential data having been through the shift-up operation, and an entropy encoder which entropy-encodes the differential data selected by the differential data selector.
A method of decoding a bitstream into which a coordinate interpolator that comprises key data and a key header comprising information regarding the key data is encoded, the key data representing the position of a key frame on a time axis, the method comprising:
A method of encoding a coordinate interpolator that comprises key data and a key header comprising information regarding the key data, the key data representing the position of a key frame on a time axis, the method comprising:
An apparatus for decoding a bitstream into which a coordinate interpolator that comprises key data and a key header comprising information regarding the key data is encoded, the key data representing the position of a key frame on a time axis, the apparatus comprising:
An apparatus for encoding a coordinate interpolator that comprises key data and a key header comprising information regarding the key data is encoded, the key data representing the position of a key frame on a time axis, the apparatus comprising:
Dependencies are inferred from the claim text.