Patent ID: 8416860
Filing Date: 2013-04-09
Classification: H04N

Abstract:
1. A deblocking filter that performs edge filtering of moving-image data, comprising: a first memory configured to store a current group of pixels; at least one second memory configured to store an adjacent group of pixels which are located adjacent to the current group of pixels; at least two edge filter circuits configured to perform concurrently edge filtering on at least two groups of pixels supplied thereto; a delay circuit configured to produce delayed pixels of the edge-filtered pixels by delaying outputs of the edge filter circuits; a first pixel selection circuit, coupled to inputs of the edge filter circuits, configured to distribute the current group of pixels read out of the first memory to the edge filter circuits; a second pixel selection circuit, coupled to other inputs of the edge filter circuits, configured to select either the adjacent group of pixels read out of the second memory or output pixels of the delay circuit and distribute the selected pixels to the edge filter circuits; and a third pixel selection circuit, coupled to input of the first memory, configured to transpose the delayed pixels of the edge-filtered pixels and supply the first memory with the delayed and transposed pixels of the edge-filtered pixels.