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    Parallel compression of image data in a compression device
    2.
    发明授权
    Parallel compression of image data in a compression device 有权

    公开(公告)号：US10523958B1

    公开(公告)日：2019-12-31

    申请号：US16228625

    申请日：2018-12-20

    Applicant: Matrox Graphics Inc.

    Inventor： Nicolas Jean ,  Mathieu Girard ,  Jean-Jacques Ostiguy

    IPC: H04N19/436 ,  H04N19/12 ,  H04N19/172 ,  H04N19/146 ,  H04N19/196 ,  H04N19/80

    Abstract: Method and apparatus of compressing a stream of pictures in parallel in a compression device, where the compression device includes at least a first and a second component, are described. A first portion of a first picture of a stream of pictures is processed in the first component of the compression device, while a second portion of a second picture of the stream of pictures is simultaneously processed in the second component of the compression device according to partial compression statistics associated with the second picture, where the partial compression statistics result from the processing of the second picture in the compression device when compression of the second picture is not yet completed.

    Method and an apparatus for enabling ultra-low latency compression of a stream of pictures
    3.
    发明授权
    Method and an apparatus for enabling ultra-low latency compression of a stream of pictures 有权

    公开(公告)号：US10360695B1

    公开(公告)日：2019-07-23

    申请号：US15611558

    申请日：2017-06-01

    Applicant: MATROX GRAPHICS INC.

    Inventor： Nicolas Jean ,  Alain Champenois ,  Jean-Jacques Ostiguy ,  Mathieu Girard ,  Khalil Mawassi

    IPC: G06T9/00 ,  H04N19/10 ,  H04N19/94 ,  H04N19/124 ,  H04N19/176

    Abstract: A method and apparatus for enabling low latency compression of a stream of pictures are described. A first set of static regions of a current picture from the plurality of pictures is determined, where each region from the first set is static. A second set of regions of the current picture is determined, where the second set includes all regions of the current picture that are not included in the first set. Compression of the first set of regions is performed based on values of a first quantization parameter determined by a MAQ mechanism. The MAQ mechanism is operative to dynamically increase the compression quality of static regions. Compression of the second set of regions is performed based on values of a second quantization parameter determined by a rate control mechanism. The rate control mechanism is operative to compress the data stream according to a target bit rate.

    Method and system for cryptographically securing a graphics system
    4.
    发明授权
    Method and system for cryptographically securing a graphics system 有权

    公开(公告)号：US09665740B1

    公开(公告)日：2017-05-30

    申请号：US14262868

    申请日：2014-04-28

    Applicant: Matrox Graphics Inc.

    Inventor： Jean-Jacques Ostiguy ,  André Testa

    IPC: G06F21/85 ,  G06T1/60

    CPC classification number: G06F21/85 ,  G06F21/84 ,  G06F2221/2107 ,  G06T1/60 ,  G09G5/006 ,  G09G5/363 ,  G09G2360/06 ,  H04N5/913 ,  H04N2005/91364

    Abstract: A system and method for cryptographically securing a graphics system connectable via an external bus to a computing system, the graphics system including a graphics processor, a video memory and a memory controller for controlling the flow of data to and from the video memory. The graphics system further includes a copy engine for copying data between a system memory of the computing system and the video memory, where this copy engine acts independently of the graphics processor of the graphics system. The present invention enables the copy engine of the graphics system to decrypt encrypted data in the course of copying data from the system memory to the video memory and to encrypt unencrypted data in the course of copying data from the video memory to the system memory. Thus, cryptographic protection of secure content may be assured by the graphics system without the excessive usage of its primary resources for this non-graphical purpose.

    Adaptive bit rate control for image compression
    5.
    发明授权
    Adaptive bit rate control for image compression 有权

    公开(公告)号：US10785485B1

    公开(公告)日：2020-09-22

    申请号：US15143069

    申请日：2016-04-29

    Applicant: Matrox Graphics Inc.

    Inventor： Mathieu Girard ,  Nicolas Jean ,  Alain Champenois ,  Jean-Jacques Ostiguy ,  Sergiu Bogdan Nicolescu

    IPC: H04N19/146 ,  H04N19/196 ,  H04N19/177 ,  H04N19/124

    Abstract: A method and apparatus for enabling compression of a stream of pictures according to a target bit rate are described. A first configuration parameter for a first portion is determined based at least in part on a first relative weight of the first portion with respect to a first set of N portions, where the first set of N portions includes the first portion and N-1 portions which succeed the first portion. A second configuration parameter for a second portion of a second picture is determined based at least in part on a second relative weight of the second portion with respect to a second set of M portions of pictures, where the second set of M portions includes a subset of the N-1 portions from the first set and zero or more additional portions of pictures from the stream of pictures.

    Parallel compression of image data in a compression device
    6.
    发明授权
    Parallel compression of image data in a compression device 有权

    公开(公告)号：US10171825B1

    公开(公告)日：2019-01-01

    申请号：US15140380

    申请日：2016-04-27

    Applicant: Matrox Graphics Inc.

    Inventor： Nicolas Jean ,  Mathieu Girard ,  Jean-Jacques Ostiguy

    IPC: H04N19/436 ,  H04N19/146 ,  H04N19/196 ,  H04N19/172 ,  H04N19/80 ,  H04N19/12

    Abstract: Method and apparatus of compressing a stream of pictures in parallel in a compression device, where the compression device includes at least a first and a second component, are described. A first portion of a first picture of a stream of pictures is processed in the first component of the compression device, while a second portion of a second picture of the stream of pictures is simultaneously processed in the second component of the compression device according to partial compression statistics associated with the second picture, where the partial compression statistics result from the processing of the second picture in the compression device when compression of the second picture is not yet completed.

    Method, system and apparatus for managing multiple input stream requests for a single network stream
    9.
    发明授权
    Method, system and apparatus for managing multiple input stream requests for a single network stream 有权

    公开(公告)号：US12218998B1

    公开(公告)日：2025-02-04

    申请号：US17553447

    申请日：2021-12-16

    Applicant: Matrox Graphics Inc.

    Inventor： Jean-Jacques Ostiguy ,  Charles-Michel Barry

    IPC: H04L65/612 ,  G06F9/50 ,  H04L65/1069

    Abstract: A method for managing requests for input streams associated with at least one incoming network stream received from a network interface. The input streams include at least one of video data, audio data and ancillary data. The method includes receiving a request for an input stream associated with a network stream identifier and determining whether the network stream identifier associated with the input stream matches an existing network stream identifier, the existing network stream identifier associated with at least one existing input stream. The method further includes: if a match is found, associating the input stream and the at least one existing input stream with a common area of memory; and if a match is not found, associating the input stream with a first area of memory that differs from a second area of memory that is associated with the at least one existing input stream.

    Motion-based adaptive quantization
    10.
    发明授权
    Motion-based adaptive quantization 有权

    公开(公告)号：US10003802B1

    公开(公告)日：2018-06-19

    申请号：US15412808

    申请日：2017-01-23

    Applicant: MATROX GRAPHICS INC.

    Inventor： Jean-Jacques Ostiguy ,  Simon Garneau ,  Bernard Antaki ,  Alain Champenois ,  Mathieu Girard ,  Nicolas Jean

    IPC: H04N11/02 ,  H04N19/124 ,  H04N19/177 ,  H04N19/51

    CPC classification number: H04N19/124 ,  H04N19/137 ,  H04N19/176 ,  H04N19/177 ,  H04N19/51

    Abstract: A method and apparatus for compressing a data stream comprising a plurality of pictures are described. A first quantization parameter (QP) from a plurality of QPs is determined, for a static region in a current picture. The plurality of QPs change in accordance with a multi-step change from a start QP to a target QP and each one of the plurality of QPs is to be applied to a respective one from successive static regions in successive pictures. In response to determining, based upon statistics on static region(s) in the current picture which are associated with the first QP, that the first QP is selected, compression of the static region is caused based upon the first QP, and in response to determining that the first QP is not selected, compression of the static region is caused based upon a second QP that is greater than the first QP.

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