Patent ID: 9558538
Date: 2017-01-31
CPC Classifications: G06T,H04N

Claim:
1. A dynamic range converter comprising: a first color space converter configured to convert a source color space of a source video having a source dynamic range to nonlinear color space signals; a linearizer configured to convert the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function; a color volume transformer configured to apply dynamic color transform metadata associated with the source video on a frame by frame basis to generate master adjusted color space signals from the linearized color space signals; a delinearizer configured to convert the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range; and a second color space converter configured to convert the nonlinearized color space signals to display domain signals; wherein the color volume transformer: wherein the color volume transformer: wherein the color volume transformer switches from processing of video data corresponding to the first video frame of the source video to processing of video data corresponding to the second video frame of the source video in response to frame boundary; wherein the color volume transformer includes a plurality of circuits that operate in a pipelined configuration under control of a pixel clock, and wherein the frame boundary is determined based on processing of the last pixel of the first video frame; wherein the plurality of circuits of the color volume transformer switch from processing of the video data corresponding to the first video frame of the source video to processing of the video data corresponding to the second video frame of the source video in response to the frame boundary, at staggered times in accordance with the pipelined configuration; wherein the color volume transformer includes: