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US 10,096,323 B2Granted
Frame error concealment method and apparatus and decoding method and apparatus using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsHo-sang Sung, Kang-eun Lee, Jung-hoe Kim, Eun-mi Oh
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Abstract
A frame error concealment method and apparatus and a decoding method and apparatus using the same. The frame error concealment method includes setting a concealment method to conceal an error based on one or more signal characteristics of an error frame having the error and concealing the error using the set concealment method.
Claims20
A packet loss concealment method, comprising:
- receiving, by at least one processor, a bitstream transmitted from an encoding end;
- when an error occurs in a current frame, determining, performed by the at least one processor, how many previous good frames are to be referred to in a linear regression analysis, based on one or more signal characteristics;
- performing, by the at least one processor, the linear regression analysis by referring to previous good frames in response to the determining how many previous good frames are to be referred to;
- predicting, by the at least one processor, at least one parameter of the current frame based on the performing the linear regression analysis;
- concealing, by the at least one processor, the current frame based on the predicted at least one parameter;
- and
- generating, by the at least one processor, an output signal including the concealed current frame.
4 more elements
The method of claim, 1, wherein the one or more signal characteristics comprise energy information.
A decoding apparatus, comprising:
- a receiver configured to receive a bitstream transmitted from an encoding end;
- and
- at least one processing device configured to:
- decode a frame having no error from the bitstream;
- when an error occurs in a current frame, determine how many previous good frames are to be referred to in a regression analysis, based on one or more signal characteristics;
- perform the regression analysis on previous good frames in response to a result of determining how many previous good frames are to be referred to;
- predict at least one parameter of the current frame based on a result of performing the regression analysis;
- conceal the current frame based on the predicted at least one parameter;
- and
- generate an output signal including the concealed current frame.
7 more elements
Dependencies are inferred from the claim text.