Ati Technologies Inc.

Ati International Srl

Ati Technologies Ulc

Advanced Micro Devices Corporation

Atl International Srl

Philip L Swan

Edward George Callway

David I Glen

Chun Wang

Paul Chow

Andrew Evan Gruber

Carl K Mizuyabu

Antonio A Rinaldi

Gaurav Arora

Daniel W Wong

Daniel Doswald

Chun-Chin David Yeh

Biljana D Simsic

William T Henry

Stephen J Orr

Richard Sita

Yubao Zheng

John E Haberfellner

Allen J C Porter

Ray Chau

Hugh Hin-Poon Chow

Lili Kang

Ivan Wong Yang

Robertson Velez

David Yeh

Allen Jc Porter

David Ian James Glen

Guarav Arora

A method and apparatus adaptively creates a dropped frame rate converted frame from a plurality of source frames using at least one alternate support frame in lieu of a neighboring source frame, in response to corrupted picture identification information. Stated another way, a frame rate converter, in response to corrupted picture indication information, replaces at least one corrupted source frame with a temporally modified frame created from at least one alternate source frame. The corrupted picture identification information indicates that a source frame, or segment thereof, includes at least one corrupted or dropped source frame (or segment thereof).

Method and apparatus for providing dropped picture image processing

In general, in an aspect, the invention provides a multimedia entertainment system including a communication link, a video source coupled to the communication link and configured to produce a video signal and provide the video signal to the communication link, a video display coupled to the communication link and configured to receive the video signal from the video source via the communication link, and to provide dynamic display characteristic information indicative of a display capability of the video display to the video source via the communication link, wherein the video source is configured to receive the dynamic display characteristic information and to produce the video signal as a function of the dynamic display characteristic information, and wherein the video display is configured to display a video image in accordance with the video signal provided by the video source.

Display information feedback

The present disclosure relates to methods and apparatus for detecting text information in a video signal that includes subtitles, captions, credits, or other text, and also for applying enhancements to the display of text areas in video. The sharpness and/or contrast ratio of subtitles of detected text areas may be improved. Text areas may be displayed in a magnified form in a separate window on a display, or on a secondary display. Further disclosed are methods and apparatus for extending the duration for which subtitles appear on the display, for organizing subtitles to be displayed in a scrolling format, for allowing the user to control when a subtitle advances to the next subtitle using a remote control, and for allowing a user to scroll back to a past subtitle in cases where the user has not finished reading a subtitle. Additionally, optical character recognition (OCR) technology may be applied to detected areas of a video signal that include text, and the text may then be displayed in a more readable font, displayed in a translated language, or rendered using voice synthesis technology.

Detection and enhancement of in-video text

Discloses herein are methods, apparatuses, and systems for preparing and displaying images in frame-sequential stereoscopic 3D. Frame-sequential stereoscopic display includes an alternating sequence of left- and right-perspective images for display. Disclosed methods include identifying pixels that modulate due to the alternating sequence of left- and right-perspective images of the frame-sequential stereoscopic display. The disclosed methods also include processing the pixels to reduce one or more residual images caused by the alternating sequence of left- and right-perspective images of the frame-sequential stereoscopic display. The disclosed methods may be implemented by a processing unit and the processing unit may be included in a system (such as, a computer or video-game console).

Pixel-intensity modulation technique for frame-sequential stereo-3D displays

A method and apparatus for correcting a rotation of a video frame are described. According to a method, an amount of the rotation of the video frame with respect to a reference is determined. The rotation of the video frame is corrected based at least in part on the detected amount of the rotation of the video frame.

Method and apparatus for correcting rotation of video frames

A video graphics chip includes a graphics module configured to process incoming video information in accordance with different modes to produce a video output signal and to transmit the video output signal toward a display screen for rendering of video corresponding to the video information, and a display mode module coupled to the graphics module configured to analyze the incoming video information to determine a type of video associated with the incoming video information and to send a video mode indication of a preferred video processing mode for the incoming video information to the graphics module, where the graphics module is configured to process the incoming video information in accordance with a selected mode from the plurality of different modes based on the video mode indication received from the display module.

Video display mode control

A de-interlacer includes recursive motion history map generating circuitry operative to determine a motion value associated with one or more pixels in interlaced fields based on pixel intensity information from at least two neighboring same polarity fields. The recursive motion history map generating circuitry generates a motion history map containing recursively generated motion history values for use in de-interlacing interlaced fields wherein the recursively generated motion history values are based, at least in part, on a decay function.

Method and de-interlacing apparatus that employs recursively generated motion history maps

An apparatus and method for image rendering includes a first buffer operative to receive first video data. A motion mad updater receives video data from the first buffer and updates a motion map using the first video data. A grain information generator is coupled to the first buffer and receives the first video data to generate slope information based on the first video data. A grain information filter receives the slope information and filters the slope information to generate filtered slope information. A spatially interpolated field generator receives the filtered slope information and generates a spatially interpolated field. A maximum difference value generator generates a maximum difference value based on the update motion map. A base value generator receives the first video data and the spatially interpolated field and generates a base value therefrom. A missing video data generator generates missing first video data.

Apparatus and method for image rendering

A digital pixel clock generation circuit receives image data and corresponding image presentation time information from at least one external image source. The digital pixel clock generation circuit includes an image presentation timing error determination circuit that produces desired pixel clock frequency control information, such as pixel output clock adjustment control information, based on a difference between an expected presentation time and an actual presentation image time information. A programmable digital waveform generation circuit is programmed based on the produced desired pixel clock frequency and has an input that is responsive to an independent clock source, that is independent from the clock source of the external image source. The programmable digital waveform generation circuit provides a digital representation of an independently generated desired pixel clock which is then output to a digital to analog converter (DAC).

Digital pixel clock generation circuit and method employing independent clock

A method and apparatus for independent video and graphics scaling in a video graphics system is accomplished by receiving a video data stream, wherein the video data stream includes video data in a first format. A graphics data stream is also received, and the graphics data stream includes graphics data in a second format. The video data of the video data stream is scaled based on a ratio between the first format and a selected video format to produce a scaled video stream. Similarly, the graphics data of the graphics data stream is scaled based on a ratio between the second format and a selected graphics format in order to produce a scaled graphics stream. The scaled video stream and the scaled graphics stream are then merged to produce a video graphics output stream.

Method and apparatus for independent video and graphics scaling in a video graphics system

A method for deinterlacing interlaced video using a graphics processor includes receiving at least one instruction for a 2D/3D engine to facilitate creation of an adaptively deinterlaced frame image from at least a first interlaced field. The method also includes performing, by the 2D/3D engine, at least a portion of adaptive deinterlacing based on at least the first interlaced field, in response to the at least one instruction to produce at least a portion of the adaptively deinterlaced frame image. Once the information is deinterlaced, the method includes retrieving, by a graphics processor display engine, the stored adaptively deinterlaced frame image generated by the 2D/3D engine, for display on one or more display devices. The method also includes issuing 2D/3D instructions to the 2D/3D engine to carry out deinterlacing of lines of video data from interlaced fields. This may be done, for example, by another processing device, such as a host CPU, or any other suitable processing device.

Method for deinterlacing interlaced video by a graphics processor

A method of mapping motion pictures experts group (MPEG) video information for improved efficiency is presented, wherein image information is stored in blocks of memory referred to as tiles. Tiles are mapped in memory so that adjacent tiles only correspond to different banks of memory. A method and system is provided for organizing and routing multiple memory requests from a plurality of clients to multiple memories. Requests from a plurality of clients, including a plurality of clients of the same type, such as multiple MPEG decoders, are directed to different memory controllers by a router. The memory controllers order the client requests by requests among similar client types. The memory controllers also order the client requests by different client types. The ordered requests are then delivered to memory. Returned data is sent back to the clients.

Tiled memory configuration for mapping video data and method thereof

A method and apparatus is disclosed for using multiple scalers to scale video and graphics data. A video data is capable of accessing data formats not accessible by a graphics engine, pipeline, or scaler. The video data can be accessed by the video scaler and subsequently converted to a data format accessible by the graphics engine, pipeline or scaler. The converted video data can be routed to memory. Once stored in memory, the data can be accessed for further processing, such as additional scaling or graphics processing. In addition, the converted video data can be output directly to a processor, such as a graphics processor for additional processing.

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Richmond Hill, Canada

Philip L Swan