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Texas Instruments : Patent Issued for Virtual Memory Access Bandwidth Verification (VMBV) in Video Coding (USPTO 9762899)

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09/21/2017 | 11:37pm CEST

By a News Reporter-Staff News Editor at Journal of Engineering -- TEXAS INSTRUMENTS INCORPORATED (Dallas, TX) has been issued patent number 9762899, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventor is Zhou, Minhua (Plano, TX).

This patent was filed on October 4, 2012 and was published online on September 12, 2017.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Field of the Invention

"Embodiments of the present invention generally relate to virtual memory access bandwidth verification in video coding.

"Description of the Related Art

"The Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T WP3/16 and ISO/IEC JTC 1/SC 29/WG 11 is currently developing the next-generation video coding standard referred to as High Efficiency Video Coding (HEVC). Similar to previous video coding standards such as H.264/AVC, HEVC is based on a hybrid coding scheme using block-based prediction and transform coding. First, the input signal is split into rectangular blocks that are predicted from the previously decoded data by either motion compensated (inter) prediction or intra prediction. The resulting prediction error is coded by applying block transforms based on an integer approximation of the discrete cosine transform, which is followed by quantization and entropy coding of the transform coefficients.

"The design goal for development of this standard is that HEVC should at least 50% more efficient than the current H.264/AVC high profile. To improve coding efficiency, several coding efficiency enhancement tools are proposed in this new standard, among them the use of a 7-tap or 8-tap interpolation filter for luminance motion compensation rather than the 6-tap interpolation filter specified in H.264/AVC and 4-tap interpolation filter for chrominance motion compensation rather than the bi-linear interpolation filter specified in H.264/AVC. While the longer interpolation filters specified for HEVC improve the accuracy of inter-prediction, they also increase the motion compensation memory bandwidth requirements of an HEVC decoder."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "Embodiments of the present invention relate to methods, apparatus, and computer readable media for virtual memory access bandwidth verification in video coding. In one aspect, a method is provided that includes determining a target picture virtual memory access (VMA) bandwidth rate, wherein the target picture VMA bandwidth rate indicates a maximum VMA bandwidth rate for motion compensation of a picture, and verifying the target picture VMA bandwidth rate for a compressed video bit stream.

"In one aspect, an apparatus is provided that includes means for determining a target picture virtual memory access (VMA) bandwidth rate, wherein the target picture VMA bandwidth rate indicates a maximum VMA bandwidth rate for motion compensation of a picture, and means for verifying the target picture VMA bandwidth rate for a compressed video bit stream.

"In one aspect, a non-transitory computer readable medium storing software instructions is provided. The instructions, when executed by a processor, cause a method to be performed that includes means for determining a target picture virtual memory access (VMA) bandwidth rate, wherein the target picture VMA bandwidth rate indicates a maximum VMA bandwidth rate for motion compensation of a picture, and means for verifying the target picture VMA bandwidth rate for a compressed video bit stream."

For the URL and additional information on this patent, see: Zhou, Minhua. Virtual Memory Access Bandwidth Verification (VMBV) in Video Coding. U.S. Patent Number 9762899, filed October 4, 2012, and published online on September 12, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9762899.PN.&OS=PN/9762899RS=PN/9762899

Keywords for this news article include: TEXAS INSTRUMENTS INCORPORATED.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC

(c) 2017 NewsRx LLC, source Science Newsletters

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