Patent ID: 9473782
Filing Date: 2016-10-18
CPC Classification: H04N

Claim Text:
1. A video encoder, comprising: a loop filter to filter luminance (“luma”) and chrominance (“chroma”) pixel values; first and second loop filter working buffers accessible to the loop filter; and ping and pong loop filter data buffers accessible to the loop filter and to a direct memory access (DMA) engine; wherein the loop filter filters pixels about a plurality of vertical edges and a plurality of horizontal edges for each macroblock in a video frame and wherein the loop filter distributes partially filtered luma and chroma pixel values across the first and second loop filter working buffers as well as the ping and pong loop filter data buffers, and does not save partially filtered luma and chroma pixel values to external memory via the DMA engine and saves only fully filtered luma and chroma pixel to external memory via the DMA engine.