Abstract: A method and apparatus are described for generating a display data stream for transmission to a remote display. A display control unit in a processor is configured to multiplex the outputs of a plurality of display controllers to generate a video data stream. A video compression engine (VCE) in the processor receives the video data stream directly from the display control unit without having to go through an external memory or an external display interface. The VCE compresses the video data stream, and optionally encrypts the video data stream. In one embodiment, audio and video data streams may be synchronized into a multiplexed, (and optionally encrypted), audio/video stream before being forwarded for transmission to a remote display. In another embodiment, separate audio and video streams (optionally encrypted) may be forwarded for transmission to the remote display.

Abstract: Apparatus and methods provide at least redundant control information such as control symbols and control data over respective channels, such as differential lanes, and skew at least the redundant control information in time between the plurality of transmission circuits. Non-control information such as video and/or audio data may also be skewed. Corresponding receiver circuits and methods are also disclosed.

Abstract: A method and apparatus provides pixel information for one or more displays by producing for output on a single link, packet based pixel component multi-stream information on two or more streams. A first stream may include a portion of per-pixel component values, such as RGB pixel component values, whereas the second stream of the multi-stream may include a remaining portion of the per-pixel component values, such as a corresponding alpha value. Hence, multi-streams are employed to communicate, for example, an extended pixel component format for output to one or more displays. The multi-streams are synchronized to provide the pixel component values at a proper time for the receiving display or plurality of displays.

Abstract: A method and apparatus provides for providing an indication of a static frame. In one example, the method and apparatus notifies the arrival of a static frame by changing a vertical blanking interval for the static frame. For example, the method and apparatus may determine that a display frame is a static frame if no graphic processing activity and/or lack of update to the frame buffer have been detected for a period of time. In response to a display frame being a static frame, the method and apparatus may change the vertical blanking interval that is immediately before the static frame by increasing the number of blanking scan lines in the vertical blanking interval. The changed vertical blanking interval may be transmitted with the static frame as an indicator of the arrival of a static frame, so that the apparatus may enter a self-refresh mode to repeatedly display the static frame.

Abstract: An apparatus and method provides temporal image processing by producing, for output on a single link such as a single cable or wireless interface, packet based multi-steam information wherein one stream provides at least frame N information for temporal imaging processing and a second stream that provides frame N?1 information for the same display, such as a current frame and a previous frame or a current frame and next frame. The method and apparatus also outputs the packet based multi-stream information and sends it for the same display for use by the same display so that the receiving display may perform temporal image processing using the multi-stream multi-frame information sent with a single link.

Abstract: An apparatus includes a display location sensor based mapping circuit. The display location sensor based mapping circuit maps multiple displays to collectively display a single large surface in response to sensed location information from at least one of the displays.

Abstract: Apparatus and methods provide at least redundant control information such as control symbols and control data over respective channels, such as differential lanes, and skew at least the redundant control information in time between the plurality of transmission circuits. Non-control information such as video and/or audio data may also be skewed. Corresponding receiver circuits and methods are also disclosed.

Abstract: A method of managing power consumption in a video device capable of displaying encoded multi-stream video is disclosed. Power reduction is achieved by limiting the amount of video and audio decoding and processing performed on at least some of the encoded streams, by taking particular application contexts into account. In a normal power consumption mode, audio/video data from all streams are decoded and digitally processed for output. In response to detecting a reduced power consumption mode, audio/video from at least some of the streams are processed in a modified manner to reduce power consumption.

Abstract: Apparatus and methods provide at least redundant control information such as control symbols and control data over respective channels, such as differential lanes, and skew at least the redundant control information in time between the plurality of transmission circuits. Non-control information such as video and/or audio data may also be skewed. Corresponding receiver circuits and methods are also disclosed.

Abstract: A circuit includes a memory circuit. The memory retiling circuit moves image information configured to be distributed among a plurality of memory channels into reconfigured image information configured to be distributed among a subset of the plurality of memory channels.

Abstract: A digital interface device is provided for facilitating key encryption of a digital signal which is communicated from a computer system to an associated peripheral device, such as a digital display device. The digital interface device has a digital output, digital output formatting circuitry associated with the output and a non-volatile RAM for storing a basic input/output system (BIOS) for, inter alia, controlling digital output formatting. The interface device is configured such that the non-volatile RAM has a specific addressable write-protectable area allocated for storing an encryption key flag at a flag address along with encryption key data. The write-protectable area is rendered read-only when a predetermined flag value is stored at the flag address.

Abstract: Disclosed herein are systems, apparatuses, and methods for enabling efficient reads to a local memory of a processing unit. In an embodiment, a processing unit includes an interface and a buffer. The interface is configured to (i) send a request for a portion of data in a region of a local memory of an other processing unit and (ii) receive, responsive to the request, all the data from the region. The buffer is configured to store the data from the region of the local memory of the other processing unit.

Abstract: An apparatus includes a clock circuit and a plurality of display interface circuits. The clock circuit provides a common clock signal. The display interface circuits each provide a respective display link clock signal in response to the common clock signal. One of the display link clock signals is at a different clock speed that another of the display link clock signals.

Abstract: An apparatus includes a clock circuit and a virtual pixel clock circuit. The clock circuit provides a common clock signal. The virtual pixel clock circuit provides a plurality of pixel clock signals in response to the common clock signal. One of the virtual pixel clock signals is at a different clock speed than another of the plurality of virtual pixel clock signals.

Abstract: An image processing circuit, such as a graphics accelerator chip or any other suitable circuit, includes display output control logic that is operative to receive a current frame of information from a frame buffer and is operative to process a current frame, such as by providing gamma correction, image scaling, graphics or video overlaying, or other suitable processing, to produce a processed current display frame and stores the processed current display frame back in the frame buffer. Fixed function or dedicated, display type specific temporal processing logic receives the processed current display frame stored in the frame buffer and also obtains at least one previous processed current display frame from the frame buffer and temporally processes pixels from each of the processed current display frame and the previous processed current display frame to produce a temporally compensated display frame for a specific type of display.

Abstract: Most often a pleasing video scene includes a few objects of great interest shown in front of a relatively uninteresting background. These pleasing scenes can be displayed with greater clarity and realism when the most computing intensive filter algorithms are used for images or parts of images of greatest interest. Run-time selection of algorithms used in particular frames or regions of a frame optimizes the use of filter computation resources.

Abstract: To apportion desired video processing between a video source device and a video sink device, at one of the devices, and based upon an indication of video processing algorithms of which the other device is capable and an indication of video processing algorithms of which the one device is capable, a set of video processing algorithms for achieving desired video processing is identified. The identified set of video processing algorithms is classified into a first subset of algorithms for performance by the other device and a second subset of algorithms for performance by the one device. At least one command for causing the other device to effect the first subset of video processing algorithms is sent. The one device may be configured to effect the second subset of algorithms.

Abstract: At one of a video source device and a video sink device, an indication of video processing capabilities of the other of the video source device and said video sink device is received. Based upon the indication and an indication of video processing capabilities of the one device, one of a plurality of video processing algorithms is selected for execution by the one device. The selecting may be based upon a set of precedence rules. Categories of video processing may for example include scan-rate conversion, interlacing, de-interlacing, de-noise, scaling, color correction, contrast correction and detail enhancement.

Abstract: A wide gamut RGB digital display, such as an LCD display, digital television, printer, or any other suitable display, includes wide color gamut configuration message control logic that is operative to indicate, to an image source provider, wide gamut RGB indication information and wide color gamut format definition information that indicates that wide gamut RGB color data is to be received by the wide gamut RGB digital display. The wide gamut configuration message control logic is also operatively responsive to wide gamut confirmation information that is received from the image source provider. The wide gamut RGB digital display also includes logic that is operative to display received wide gamut RGB color data that was received in response to the wide gamut RGB indication information and the format definition information.

Abstract: A video graphics module capable of blending multiple image layers includes a plurality of video graphic pipelines, each of which is operable to process a corresponding image layer. One of the video graphic pipelines processes a foremost image layer. For example, the foremost image layer may be a hardware cursor. The video graphics module also includes a blending module that is operably coupled to the plurality of video graphic pipelines. The blending module blends, in accordance with a blending convention (e.g., AND/Exclusive OR blending and/or alpha blending), the corresponding image layers of each pipeline in a predetermined blending order to produce an output image. The blending module blends the foremost image layer such that it appears in a foremost position with respect to the other image layers.