DEPTH ORIENTED INTER-VIEW MOTION VECTOR PREDICTION

    公开(公告)号:CA2912469A1

    公开(公告)日:2014-12-31

    申请号:CA2912469

    申请日:2014-06-27

    Applicant: QUALCOMM INC

    Abstract: An example video coding device is configured to compare an inter-view predicted motion vector candidate (IPMVC) to a motion vector inheritance (MVI) candidate, where the IPMVC and the MVI candidate are each associated with a block of video data in a dependent depth view, and where the IPMVC is generated from a corresponding block of video data in a base depth view. The video coding device may be further configured to perform one of adding the IPMVC to a merge candidate list based on the IPMVC being different from the MVI candidate, or omitting the IPMVC from the merge candidate list based on the IPMVC being identical to the MVI candidate.

    MORE ACCURATE ADVANCED RESIDUAL PREDICTION (ARP) FOR TEXTURE CODING

    公开(公告)号:CA2912451A1

    公开(公告)日:2014-12-24

    申请号:CA2912451

    申请日:2014-06-20

    Applicant: QUALCOMM INC

    Abstract: Techniques for advanced residual prediction (ARP) for coding video data may include inter-view ARP. Inter-view ARP may include identifying a disparity motion vector (DMV) for a current video block. The DMV is used for inter-view prediction of the current video block based on an inter-view reference video block. The techniques for inter-view ARP may also include identifying temporal reference video blocks in the current and reference views based on a temporal motion vector (TMV) of the inter-view reference video block, and determining a residual predictor block based on a difference between the temporal reference video blocks.

    MOTION VECTOR CODING AND BI-PREDICTION IN HEVC AND ITS EXTENSIONS

    公开(公告)号:PH12014501923B1

    公开(公告)日:2014-11-24

    申请号:PH12014501923

    申请日:2014-08-27

    Applicant: QUALCOMM INC

    Abstract: In one example, a device includes a video coder (e.g., a video encoder or a video decoder) configured to determine that a block of video data is to be coded in accordance with a three-dimensional extension of High Efficiency Video Coding (HEVC), and, based the determination that the block is to be coded in accordance with the three- dimensional extension of HEVC, disable temporal motion vector prediction for coding the block. The video coder may be further configured to, when the block comprises a bi-predicted block (B-block), determine that the B-block refers to a predetermined pair of pictures in a first reference picture list and a second reference picture list, and, based on the determination that the B-block refers to the predetermined pair, equally weight contributions from the pair of pictures when calculating a predictive block for the block.

    High-level syntax extensions for high efficiency video coding

    公开(公告)号:AU2013231961A1

    公开(公告)日:2014-09-25

    申请号:AU2013231961

    申请日:2013-03-14

    Applicant: QUALCOMM INC

    Abstract: In one example, a device includes a video coder configured to code a picture order count (POC) value for a first picture of video data, code a second-dimension picture identifier for the first picture, and code, in accordance with a base video coding specification or an extension to the base video coding specification, a second picture based at least in part on the POC value and the second-dimension picture identifier of the first picture. The video coder may comprise a video encoder or a video decoder. The second-dimension picture identifier may comprise, for example, a view identifier, a view order index, a layer identifier, or other such identifier. The video coder may code the POC value and the second-dimension picture identifier duing coding of a motion vector for a block of the second picture, e.g., during advanced motion vector prediction or merge mode coding.

    DATA DEMODULATION FOR A CDMA COMMUNICATION SYSTEM

    公开(公告)号:CA2543036C

    公开(公告)日:2011-06-28

    申请号:CA2543036

    申请日:2004-10-18

    Applicant: QUALCOMM INC

    Inventor: LI TAO ZHANG LI

    Abstract: An integrated circuit that performs data demodulation on partially despread symbols includes a despreading unit (620), a channel compensation unit (640), and a symbol combiner (650). The despreading unit (620) despreads input samples and provides despread symbols for a first code channel with a first spreading factor. The channel compensation unit (640) multiplies the despread symbols with channel estimates and provides demodulated symbols. The symbol combiner (650) combines groups of demodulated symbols to obtain recovered data symbols for a second code channel with a second spreading factor that is an integer multiple of the first spreading factor. The channel compensation and symbol combining are dependent on whether or not transmit diversity is used. For a TDM design, despread symbols for multiple first code channels are processed in a TDM manner, one channel at a time, to obtain recovered data symbols for multiple second code channels. The channel compensation unit and symbol combiner can be operated in a pipelined manner.

    DATA DEMODULATION FOR A CDMA COMMUNICATION SYSTEM

    公开(公告)号:CA2543036A1

    公开(公告)日:2005-04-28

    申请号:CA2543036

    申请日:2004-10-18

    Applicant: QUALCOMM INC

    Inventor: LI TAO ZHANG LI

    Abstract: An apparatus for performing data demodulation, comprising means for despreading to despread input samples and provide despread symbols for plurality of first code channels with a first spreading factor; means for multiplying to multiply the despread symbols for each of the plurality of first code channels with channel estimates and provide demodulated symbols for the first code channel; and means for combining to combine groups of demodulated symbols for each of the plurality of first code channels to obtain recovered data symbols for a set of second code channels with a second spreading factor and corresponding to the first code channel, the second spreading factor being an integer multiple of the first spreading factor and a corresponding method.

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