Ati Technologies Inc.

Daniel Wai-Him Wong

Milivoje M Aleksic

David A Strasser

Allen J Porter

Kenneth Man

Ivan Wong-Yin Yang

Methods and systems are provided for encrypting data from a plurality of multimedia devices. A driver initiates authentication for the plurality of multimedia applications. The driver assigns a key registers to each of the applications, based on available key registers. The applications use generated encryption key values to send data to be decrypted by their assigned key registers. The driver notifies video processing hardware of encryption seed keys to determine the generated encryption key values and hardware stores the value of corresponding decryption keys the assigned key registers. Each register can be used to exclusively decrypt data from an application of the plurality of applications. The driver directs the encrypted data from the applications to the video processing hardware. The video processing hardware decrypts the data and processes it into image data accordingly.

System for encrypting data from multiple multimedia applications and method thereof

A system and methods are shown for improved processing of motion compensated video. A software driver handles image data related to motion compensated video. The image data includes IDCT coefficients and motion compensation vector data. A unique identifier is attached to the image data, preserving the relationship between the IDCT coefficients and motion compensated vector data related to an image block. The software driver sends the IDCT coefficients to an IDCT component. The IDCT coefficients are processed and an interrupt is sent to the software driver including the unique identifier of the processed IDCT coefficients. The software driver sends the motion compensation vector data related to the unique identifier in the interrupt. A 3D pipe receives the motion compensation vector data and reads the corresponding processed IDCT data. The 3D pipe sends an interrupt allowing the software driver to submit new IDCT coefficients as the 3D pipe processes the current motion compensation data with the read IDCT data. The 3D pipe processes the motion compensation data along with the read IDCT data to generate at least a portion of an image. The image portion is stored in a frame buffer until it is ready to be displayed.

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North York, Canada

Daniel Wai-Him Wong