Abstract: A video decoder comprising (i) a post-processing filter block, (ii) a comfort noise addition block and (iii) a video value/range adjustment block, where the comfort noise addition block is integrated into a video output path of the video decoder. The post-processing filter block may be configured to perform one or more of noise reduction, spatial filtering and temporal filtering on luminance data. The comfort noise addition block may be configured to add comfort noise to the luminance data. The video value/range adjustment block may be configured to adjust one or both of a value and a range of the luminance data.

Abstract: A method for motion estimation comprising the steps of (A) determining whether a cost of encoding one or more prediction parameters for a current search position is less than a current best cost, (B) when the cost of encoding the one or more prediction parameters for the current search position is less than the current best cost, updating the current best cost if the current best cost is greater than or equal to a sum of the cost for encoding the one or more prediction parameters for the current search position and a distortion measurement for the current search position and (C) ending the search when the current best cost is less than or equal to the cost of encoding the one or more prediction parameters for the current search position and less than a minimum cost for encoding one or more prediction parameters for one or more remaining search positions.

Abstract: A method for activating and deactivating parameter sets comprising the steps of: (A) activating a first parameter set in response to a reference to a first identification value associated with the first parameter set and (B) deactivating the first parameter set in response to a reference to a second identification value associated with a second parameter set.

Abstract: A method for reducing memory utilization in a digital video codec. The method generally includes the steps of (A) generating a second reference picture by downsampling a first reference picture using a pattern, wherein the pattern (i) comprises a two-dimensional grid and (ii) is unachievable by performing a vertical downsampling and separately performing a horizontal downsampling, (B) generating a third reference picture by upsampling the second reference picture and (C) processing an image in a video signal using the third reference picture.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) calculating a potential sample at a location interfaced with a first field of the picture by temporal filtering, (B) evaluating a protection condition in a current region around the location after inclusion of the potential sample and (C) calculating an interpolated sample at the location by vertical spatial filtering the first field in response to the protection condition indicating a significant increase in a vertical activity within the current region due to the potential sample.

Abstract: A method for encoding quantization matrices comprising the steps of (A) signaling whether values of a luma quantization matrix are determined by either (i) a first set of custom values or (ii) a set of standardized default values, (B) transmitting the first set of custom values when the values of the luma quantization matrix are determined by the first set of custom values and (C) signaling whether values of a first chroma component quantization matrix are determined by either (i) a second set of custom values or (ii) the values of the luma quantization matrix.

Abstract: A method for motion adaptive video deinterlacing is disclosed. The method generally includes the steps of (A) in a first plurality among a plurality of modes, generating a frame by deinterlacing a current field using a plurality of memory bandwidth configurations and (B) in a second plurality among the modes, generating the frame by deinterlacing the current field using a plurality of linestore configurations.

Abstract: A method for reduced memory and bandwidth motion adaptive video deinterlacing is disclosed. The method generally includes the steps of (A) generating a frame by deinterlacing a current field in a first of a plurality of modes, (B) generating the frame by deinterlacing using both of the current field and an opposite-parity field in a second of the modes and (C) generating the frame be deinterlacing using all of the current field, the opposite-parity field and another field in a third of the modes, wherein the method uses at least two of the modes.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.

Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a decoded video signal and syntax elements in response to an encoded bitstream. The second circuit may be configured to generate one or more overlay images in response to the syntax elements. The overlay images generally comprise graphical symbols representing the syntax elements of the encoded bitstream.

Abstract: A method for motion estimation comprising the steps of (A) determining whether a cost of encoding one or more prediction parameters for a current search position is less than a current best cost, (B) when the cost of encoding the one or more prediction parameters for the current search position is greater than or equal to the current best cost, determining whether the current best cost is less than a minimum cost for encoding one or more prediction parameters of one or more remaining search positions and (C) ending the search when the current best cost is less than the minimum cost for encoding the one or more prediction parameters of the one or more remaining search positions.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) determining a protection condition by performing a static check on the picture in a region around a location interlaced with a first field of the picture, (B) calculating an interpolated sample at the location by temporal averaging the first field with a second field in response to the protection condition indicating significant vertical activity and (C) calculating the interpolated sample at the location by spatial filtering the first field in response to the protection condition indicating insignificant vertical activity.

Abstract: A method for processing a video bitstream is disclosed. The method generally includes the steps of (A) determining co-located motion information for a plurality of co-located sub-blocks in a co-located macroblock of the video bitstream, (B) storing the co-located motion information for (i) at least a first three of the co-located sub-blocks along a left side of the co-located macroblock, (ii) at least a second three of the co-located sub-blocks along a right side of the co-located macroblock and (iii) less than all of the co-located sub-blocks and (C) inferring current motion information for a current macroblock co-located in a different picture from the co-located macroblock using the co-located motion information that was stored.

Abstract: A method for a color tone correction is disclosed. The method generally includes the steps of (A) generating a plurality of first intermediate components by scaling a plurality of first color components towards a first ideal color, wherein the first color components (i) are for a first plurality of pixels in an input video signal and (ii) fall inside a first region of a color space, (B) generating a plurality of first corrected components by adjusting the first intermediate components such that a first mapping of the first color components to the first corrected components is both (i) continuous in the color space and (ii) non-overlapping in the color space and (C) generating an output video signal by combining the first corrected components with a plurality of unaltered color components, wherein the unaltered color components (i) are for a second plurality of the pixels and (ii) fall outside the first region.

Abstract: A method for improving rate distortion performance of a compression system through parallel coefficient cancellation in a transform comprising the steps of (A) determining a block sum of absolute values for each of a plurality of blocks in a macroblock and (B) setting one or more coefficient values of a block to zero in response to a block sum value of said block being less than a first predetermined threshold value.

Abstract: A method for video decoding is disclosed. The method generally includes the steps of (A) decoding a first picture from a bitstream, the first picture having a first resolution, (B) storing the first picture at the first resolution in a memory and (C) storing the first picture at a second resolution in the memory, wherein the second resolution is lower than the first resolution.

Abstract: A method for implementing non-reference frame prediction in video compression comprising the steps of (A) setting a prediction flag (i) “off” if non-reference frames are used for block prediction and (ii) “on” if non-reference frames are not used for block prediction, (B) if the prediction flag is off, generating an output video signal in response to an input video signal by performing an inverse quantization step and an inverse transform step in accordance with a predefined coding specification and (C) if the prediction flag is on, bypassing the inverse quantization step and the inverse transform step.

Abstract: An apparatus comprising an output circuit, a first processing circuit and a second processing circuit. The output circuit may be configured to generate an output data stream in response to (i) a first intermediate signal, (ii) a second intermediate signal, and (iii) a third intermediate signal. The first processing circuit may be configured to generate the first intermediate signal in response to (i) a processed video signal and (ii) a prediction flag. The second processing circuit may be configured to generate (i) the processed video signal, (ii) the second intermediate signal and (iii) the third intermediate signal in response to an input video signal.

Abstract: An apparatus comprising a first processing circuit and a second processing circuit. The first processing circuit may be configured to generate a motion vector residual in response to one or more macroblocks of an input signal. The second processing circuit may be configured to convert between (i) the motion vector residual and (ii) a binarized representation of the motion vector residual. The binarized representation of the motion vector residual generally comprises (i) a binarized representation of an absolute value of the motion vector residual and (ii) a binarized representation of a sign of the motion vector residual when the motion vector residual has a non-zero value. The binarized representation of the sign is generally located after an end of the binarized representation of the absolute value of the motion vector residual.

Abstract: A method for processing an input signal is disclosed. The method generally includes the steps of (A) extracting a compressed signal and a first checksum from the input signal, (B) generating a decompressed signal by decompressing the compressed signal, (C) calculating a second checksum for the decompressed signal and (D) generating a result by comparing the first checksum to the second checksum.