Method and apparatus for encoding/decoding media signal

A technology for media and equipment, applied in the fields of digital video signal modification, pulse modulation TV signal transmission, image communication, etc., can solve the problems of low processing efficiency, reduced efficiency of media signal encoding/decoding, distortion, etc., to improve signal fidelity degree of effect

Inactive Publication Date: 2010-07-28
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

However, at this time, even if there are a plurality of frames including similar components, the same data is repeatedly encoded, so such processing is inefficient
In addition, while generating and transmitting the media signal, distortion (for example, variation of the media signal due to repetition of the media signal) may occur, so the efficiency of encoding / decoding the media signal may decrease

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  • Method and apparatus for encoding/decoding media signal
  • Method and apparatus for encoding/decoding media signal

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[0016] The present invention also provides a method and device for encoding / decoding a media signal. The method and device can be based on the high similarity between adjacent frames of the media signal, by using the harmonics of adjacent frame areas. The harmonic wave is used to predict the harmonics of the current frame area, and when the prediction result error occurs, the compensation value of the prediction result error is compressed.

[0017] The present invention also provides a method and low-performance-requiring device for encoding / decoding a media signal, which are capable of encoding the difference between the harmonics of a specific frame region and the harmonics of adjacent frame regions The media signal is encoded / decoded with lower performance requirements without encoding all harmonics of a specific frame region of the media signal.

[0018] According to an aspect of the present invention, there is provided a method of encoding a media signal compr...

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Abstract

The invention provides a method and apparatus for encoding / decoding a media signal. The method of encoding a media signal includes: when harmonics exist in a sinusoid of a previous frame section, predicting a harmonic frequency of a current frame section that is to be encoded by using a harmonic frequency of the previous frame section, and generating a residual signal by using a difference between the predicted frequency and an actual harmonic frequency of the current frame section.

Description

technical field [0001] Methods and apparatus consistent with the present invention relate to encoding and decoding multimedia signals, and more particularly, to a method and apparatus for encoding / decoding multimedia signals that efficiently encode and decode multimedia signals by using harmonic properties Signal encoding and decoding. Background technique [0002] When transmitting a media signal, compression techniques are used to reduce the bandwidth or bit rate of the media signal. According to the parametric encoding method, a media signal is divided into component signals having specific properties, and parameters showing the properties of the divided component signals are encoded. A parametric encoding device divides a media signal into segments or frames, and assumes that each frame of the media signal includes a temporal component, a sinusoidal component, and a noise component. A parametric encoding device decomposes a media signal into each component, and quantiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24G10L19/08G10L19/09G10L19/093
CPCG10L19/09G10L19/093H04N19/51G10L19/02
Inventor 郑钟勋李健炯李男淑吴宰源
Owner SAMSUNG ELECTRONICS CO LTD
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