VIRTUAL LINEBUFFERS FOR IMAGE SIGNAL PROCESSORS

    公开(公告)号:US20190238758A1

    公开(公告)日:2019-08-01

    申请号:US16376479

    申请日:2019-04-05

    Applicant: Google LLC

    Abstract: In a general aspect, an apparatus can include image processing logic (IPL) configured to perform an image processing operation on pixel data corresponding with an image having a width of W pixels and a height of H pixels to produce output pixel data in vertical slices of K pixels using K vertically overlapping stencils of S×S pixels, K being greater than 1 and less than H, S being greater than or equal to 2, and W being greater than S. The apparatus can also include a linebuffer operationally coupled with the IPL, the linebuffer configured to buffer the pixel data for the IPL. The linebuffer can include a full-size buffer having a width of W and a height of (S−1). The linebuffer can also include a sliding buffer having a width of SB and a height of K, SB being greater than or equal to S and less than W.

    MULTI-FUNCTIONAL EXECUTION LANE FOR IMAGE PROCESSOR

    公开(公告)号:US20190213006A1

    公开(公告)日:2019-07-11

    申请号:US16251887

    申请日:2019-01-18

    Applicant: Google LLC

    CPC classification number: G06F9/3001 G06F7/57 G06F9/30014 G06F15/80

    Abstract: An apparatus is described that includes an execution unit having a multiply add computation unit, a first ALU logic unit and a second ALU logic unit. The ALU unit is to perform first, second, third and fourth instructions. The first instruction is a multiply add instruction. The second instruction is to perform parallel ALU operations with the first and second ALU logic units operating simultaneously to produce different respective output resultants of the second instruction. The third instruction is to perform sequential ALU operations with one of the ALU logic units operating from an output of the other of the ALU logic units to determine an output resultant of the third instruction. The fourth instruction is to perform an iterative divide operation in which the first ALU logic unit and the second ALU logic unit operate during to determine first and second division resultant digit values.

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