Microsoft Technology Licensing, LLC

Saswata Mandal

Ryan Yonghee Kim

Kathleen Anne Slattery

Sudhakar Visweswara Prabhu

Travis Muhlestein

Adam M Smith

Jesse Daniel Kaplan

Steven P Trombetta

Joanna Mason

Corey E Rogers

Yongjun Wu

Shyam Sadhwani

Charles Lawrence Zitnick, Iii

George Randell Dong

Carol Greenbaum

Seth Hendrickson

Charles Lawrence Zitnick Iii

The present disclosure relates to systems and methods for transmitting Standard Dynamic Range (SDR) content. The systems and methods may use a modified Electro-Optical Transfer Function (EOTF) curve to convert nonlinear color values of SDR content into optical output values of modified SDR content. The systems and methods may encode the modified SDR content using eight bits while preventing banding. The systems and methods may transmit the encoded data to a client device for presentation on a display.

Efficient electro-optical transfer function (EOTF) curve for standard dynamic range (SDR) content

A converter can process image data from input HDR images in real time to compute new metadata about the brightness, contrast, color gamut and/or color volume for the image data to be displayed from each frame. Existing metadata can be ignored. The converter can combine the metadata for a current HDR frame with metadata for a plurality of immediately previous sequential frames to provide parameters for tone mapping. The converter uses these parameters, and characteristics about a lower dynamic range display which will receive output image data, to define a transfer function for converting the input HDR image data into output image data for display. The converter analyzes and tone maps HDR frames at a rate sufficient to allow output video to be generated at a desired frame rate while receiving the image data from frames of the input HDR video at an input frame rate.

Real time tone mapping of high dynamic range image data at time of playback on a lower dynamic range display

A gaming console composites a camera video overlay on gameplay video for broadcasting such that the gameplay area that is rendered by the gaming console is not obscured, even when the camera video overlay is composited on the gameplay video for broadcasting. The gaming console or a companion device of the gaming console can also allow a user to specify placement of the camera video overlay on the gameplay video for broadcasting, permitting the user to choose the portion of the gameplay video for broadcasting that is obscured by the camera video overlay.

Positioning a camera video overlay on gameplay video

A graphics pipeline with components that process frames by portions (e.g., pixels or rows) or slices to reduce end-to-end latency. Components of a pipeline process portions of a same frame at the same time. For example, as graphics data for a frame is being generated and fills a framebuffer, once a certain portion of video data less than the whole frame (slice or sub-frame) becomes available, before the corresponding frame is finished filling the framebuffer, the next pipeline component after the framebuffer, for instance a video processor for color conversion or an encoder, begins to process the portion of the frame. While one portion of a frame is accumulating in the frame buffer, another portion of the same frame is being encoded by an encoder, and another portion of the frame might be being packaged by a multiplexer, and a network socket might start streaming the multiplexed portion.

Parallel processing of a video frame

Video signatures are generated when a small change in video information between consecutive frames N&#x2212;1 and N is followed by a large change in video information between consecutive frames N and N+1. Information from frames N and/or N+1 is used to form a video signature.

Video signature

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Bellevue, WA, United States of America

Saswata Mandal