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Multimedia coding-decoder and its method

A codec method and encoding method technology, applied in the field of multimedia codecs, can solve problems such as low computing speed, small storage capacity, and inability to play streaming media files smoothly

Inactive Publication Date: 2007-08-29
北京金远见电脑技术有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, a problem is that various consumer products such as learning machines developed by using 8-bit single-chip microcomputers have low computing speed and small storage capacity, and cannot smoothly play various streaming media compressed by existing multimedia compression technologies. document

Method used

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  • Multimedia coding-decoder and its method
  • Multimedia coding-decoder and its method
  • Multimedia coding-decoder and its method

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Embodiment Construction

[0027] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0028] Fig. 1 and Fig. 2 are respectively a schematic diagram and a flowchart of an encoding method according to the present invention.

[0029] With reference to Fig. 1 and Fig. 2, coding method according to the present invention comprises the following steps: analyze data category, media information is divided into text, image, animation, audio frequency, video etc. (S102); Convert data, the result that step S102 obtains includes time The dimension information is stored in the form of data stream (S104); the data stream is compressed (S106). Among them, because the data volume of digitized audio and video information is very large, in order to adapt to the characteristics of small storage capacity of various consumer electronic products, the EZV lossless compression algorithm is adopted.

[0030] Fig. 3 and Fig. 4 are r...

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PUM

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Abstract

The disclosed method includes encoding method and decoding method. The encoding method includes following steps: analyzing data sorts, dividing data to text, image, animation, audio, and video; converting data, divided result together with information of time dimension are stored in format of data stream; compressing data stream, EZV lossless compression algorithm is adopted in order to suit features of smaller memory capacity in consuming electronic products since data quantity of digital audio and video information is very huge. The decoding method includes following steps: decompressing data stream, restoring data stream containing information of time dimension; converting data stream into text, image, animation, audio, and video etc. to recover original media information. The codec includes encoder of running the said encoding method, and decoder of running the said decoding method.

Description

technical field [0001] The invention relates to a multimedia codec and its method. Background technique [0002] Currently, multimedia compression technology has been widely used in various consumer products and communication devices, such as VCD players, DVD players, mobile phones, and MP4 players. [0003] A conventional multimedia compression technique is eg the latest MPEG compression technique, MPEG-4. MPEG-4 is capable of providing professional-quality audio and video streaming services over a wide range of bandwidths. MPEG-4 is defined by the Moving Picture Experts Group (MPEG), and this specification officially became an international standard in 2000. [0004] Compared with MPEG-1 and MPEG-2, MPEG-4 is more suitable for interactive AV services and remote monitoring, and its design goal is to make it more widely adaptable and scalable: Between 6400bps and a resolution of 176×144, it can use a narrow bandwidth to compress and transmit data through frame reconstruct...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/52H04N19/157H04N19/184H04N19/42
Inventor 徐俊江
Owner 北京金远见电脑技术有限公司
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