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    A method for block coding of a flow of data, in particular video data, and corresponding device and computer-program product
    283.
    发明公开
    A method for block coding of a flow of data, in particular video data, and corresponding device and computer-program product 审中-公开
    一种方法，装置和计算机程序的数据流的块编码，在特定的视频数据

    公开(公告)号：EP1667461A3

    公开(公告)日：2010-12-01

    申请号：EP05110313.3

    申请日：2005-11-03

    Applicant: STMicroelectronics Srl

    Inventor： Bruna, Arcangelo Ranieri ,  Celetto, Luca

    IPC: H04N7/26

    CPC classification number: H04N19/124 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/194 ,  H04N19/45 ,  H04N19/61

    Abstract: Described herein is a method for block coding of a flow (I) of data, in particular video data, via a compression operation (100; 200; 300) that comprises: applying to input-data blocks (B, CB; MB) in said data flow (I) a discrete-cosine-transform (DCT) operation (120; 220) and a quantization operation (130; 230) to produce compressed-data blocks (DB); subjecting said compressed-data blocks (DB) to a coding operation (235, 240) to obtain compressed output flows (O); and moreover applying an inverse-quantization operation (190; 290) and an inverse-discrete-cosine-transform (IDCT) operation (195; 295) on said compressed-data blocks (DB) to obtain reconstructed blocks (RB).
    The method envisages controlling (1000; 1100) generation of mismatch errors from said input-data blocks (B, CB; MB) via the operations of:
    - detecting from said input-data blocks (B, CB; MB) and compressed-data blocks (DB) data blocks (DB; MB) that are liable to cause mismatch errors; and
    - modifying said block (DB; MB) that are liable to cause mismatch errors prior to said coding operation (235, 240).

    Assembly of a capacitive acoustic transducer of the microelectromechanical type and package thereof
    286.
    发明公开
    Assembly of a capacitive acoustic transducer of the microelectromechanical type and package thereof 有权
    Anordnung eines kapazitiven mikroelektromechanischen Akustikwandlers und Verpackungdafür

    公开(公告)号：EP2252077A1

    公开(公告)日：2010-11-17

    申请号：EP09425179.0

    申请日：2009-05-11

    Applicant: STMicroelectronics Srl

    Inventor： Conti, Sebastiano ,  Vigna, Benedetto ,  Cortese, Mario Francesco

    IPC: H04R19/00 ,  H04R19/04 ,  H04R1/08 ,  B81C1/00

    CPC classification number: B81C1/00158 ,  B81B3/0018 ,  B81B7/0061 ,  B81B2201/0257 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48145 ,  H01L2224/48479 ,  H01L2924/00014 ,  H01L2924/16151 ,  H01L2924/16152 ,  H04R1/04 ,  H04R1/06 ,  H04R1/086 ,  H04R1/2838 ,  H04R19/005 ,  H04R19/04 ,  H04R2201/003 ,  H01L2224/48471 ,  H01L2224/4554 ,  H01L2924/00012

    Abstract: A microelectromechanical-acoustic-transducer assembly (30) has: a first die (20) integrating a MEMS sensing structure (1) having a membrane (2), which has a first surface in fluid communication with a front chamber and a second surface, opposite to the first surface, in fluid communication with a back chamber of the microelectromechanical acoustic transducer (30), is able to undergo deformation as a function of incident acoustic-pressure waves, and faces a rigid electrode (3) so as to form a variable-capacitance capacitor; a second die (21), integrating an electronic reading circuit operatively coupled to the MEMS sensing structure (1) and supplying an electrical output signal as a function of the capacitive variation; and a package (40), housing the first die (20) and the second die (21) and having a base substrate (42) with electrical contacts (48) towards the outside world. The first and second dice are set stacked in the package and directly connected together mechanically and electrically; the package delimits at least one between the front and back chambers.

    Abstract translation: 微机电声换能器组件（30）具有：集成具有膜（2）的MEMS感测结构（1）的第一管芯（20），其具有与前室和第二表面流体连通的第一表面， 与第一表面相反，与微机电声换能器（30）的后室流体连通，能够经受作为入射声压波的函数的变形，并且面对刚性电极（3）以形成 变容电容器; 集成了可操作地耦合到MEMS感测结构（1）并且提供作为电容变化的函数的电输出信号的电子阅读电路的第二裸片（21） 和一个容纳第一管芯（20）和第二管芯（21）的封装（40），并具有朝向外界的电触点（48）的基底（42）。 第一和第二骰子被堆叠在包装中并且机械和电气直接连接在一起; 包装在前室和后室之间划定至少一个。

    Video coding method and device, related scalable bitstream and computer program product
    290.
    发明公开
    Video coding method and device, related scalable bitstream and computer program product 有权
    Zeitliche Skalierbarkeit im Falle vonSzenenänderungen

    公开(公告)号：EP2224745A1

    公开(公告)日：2010-09-01

    申请号：EP10154534.1

    申请日：2010-02-24

    Applicant: STMicroelectronics Srl

    Inventor： Alfonso, Daniele ,  Anselmo, Tea

    IPC: H04N7/26 ,  H04N7/50

    Abstract: An encoder device (SE) allows generating, starting from a sequence (IS) of digital video pictures, a time-scalable encoded bitstream (SB) obtained by applying to the pictures a hierarchical prediction (P) wherein the pictures are organised in Groups Of Picture or GOPs including:
    - base time layer (L0) pictures, designated Key Picture and suitable for encoding a Inter or Intra, with and without motion-compensated prediction respectively,
    - higher time layer (L1, L2, L3) pictures, adapted to be selectively eliminated to effect time scalability of the encoded scalable bitstream (SB).
    Carried out for such purpose is the detection (IB) of the possible presence of scene changes (SC) in the sequence (IS) of digital video pictures, and, in the presence of a scene change (SC), the first Key Picture after the scene change (SC) is in any case encoded (120) as Intra (I0).

    Abstract translation: 编码器装置（SE）允许从数字视频图像的序列（IS）开始，通过向图像应用通过将图像组织在组中的分层预测（P）而获得的时间可分级编码比特流（SB） 图像或GOP包括： - 分别具有和不具有运动补偿预测的基本时间层（L0）图像，指定的关键图像并且适合于编码Inter或Intra， - 更高的时间层（L1，L2，L3）图像，适于 被选择性地消除以实现编码的可缩放比特流（SB）的时间可缩放性。 为了这样的目的而进行的是在数字视频图像的序列（IS）中可能存在场景变化（SC）的检测（IB），并且在存在场景变化（SC）的情况下，第一关键图像 在任何情况下，场景变化（SC）被编码（120）为Intra（I0）。

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