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Method and device for decoding data streams

A decoding method and data stream technology, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problem of low decoding speed, and achieve the effect of improving decoding speed, simplifying circuit structure, and saving FPGA resources.

Inactive Publication Date: 2016-08-03
ZTE CORP
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Problems solved by technology

[0007] The present invention provides a data stream decoding method and device, to at least solve the problem in the related art that only serial decoding can be performed one by one in the JPEG decoding process, resulting in low decoding speed

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  • Method and device for decoding data streams
  • Method and device for decoding data streams

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Embodiment Construction

[0025] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0026] In this embodiment, a decoding method of a data stream is provided, figure 2 is a flowchart of a decoding method of a data stream according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0027] Step S102, receiving multiple compressed data streams, wherein the compressed data stream is a data stream using a first coding method, and the first coding method needs to be decoded by using a serial decoding method;

[0028] Step S104, using a plurality of decoders to respectively decode multiple compressed data streams in parallel to obtain multiple decoded data streams;

[0029] Step S106, buffering the multi-channel decoded da...

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Abstract

The invention discloses a method and a device for decoding data streams. The method comprises the steps of receiving multiple compressed data streams, wherein the compressed data streams are data streams adopting a first coding mode, and the first coding mode needs to be decoded by adopting a serial decoding mode, carrying out parallel decoding on the multiple compressed data streams by adopting a plurality of decoders so as to acquire multiple decoded data streams, buffering the multiple decoded data streams, and carrying out follow-up decoding processing on the multiple buffered decoded data streams by adopting a polling mode. The method and the device disclosed by the invention solve a problem that the decoding speed is low in related technologies because serial decoding can only be carried out one by one in the process of JPEG (Joint Photographic Experts Group) decoding, and thus achieve the effects of simplifying the circuit structure, saving FPGA (Field Programmable Gate Array) resources and improving the decoding speed.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a decoding method and device for a data stream. Background technique [0002] The present invention relates to a high-speed JPEG image decoding device based on Field Programmable Gate Array (Field Programable Gate Array, FPGA for short), in particular to encoding and decoding technology in the field of image digital processing. [0003] With the rapid development of computer and communication and multimedia technology, people have higher and higher requirements for the storage and transmission of image data. This requires storing images with a smaller space and transmitting images with a lower bit rate under the premise of ensuring image quality, which requires image compression coding and decoding technology to achieve. The Joint Photographic Experts Group (JPEG) standard has good image quality, high coding efficiency, and moderate computational complexity, so it is widely us...

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Application Information

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IPC IPC(8): H04N19/436H04N19/44
CPCH04N19/436
Inventor 陈峻峰
Owner ZTE CORP
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