Low-overhead multi-standard 8×8 one-dimensional discrete cosine transform circuit based on resource sharing
A discrete cosine transform and low-overhead technology, applied in the field of low-overhead multi-standard discrete cosine transform circuits, can solve the problems of multiple hardware resources and DCT circuits that do not fully consider hardware sharing, and achieve the effect of reducing logic resources
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0047] The design idea of the present invention is: the present invention is based on the hardware algorithm that document [1] proposes, according to figure 2 The method matrix is decomposed as shown, and the calculation result of 1D-FDCT mainly depends on U·X E and V·X O conclusion. Moreover, from matrix U·X E and V·X O In terms of the type and number of calculations required, U·X E and V·X O belong to similar matrices, such as image 3 shown. Therefore, the present invention saves area overhead by customizing the hardware circuit structure of the processing unit; at the same time, by introducing a "stage-level" pipeline structure, the calculation efficiency is further improved, and the demand for input and ou...
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