中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

37 records (took 0.029 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE602006006990D1

    公开(公告)日：2009-07-09

    申请号：DE602006006990

    申请日：2006-06-28

    Applicant: ST MICROELECTRONICS NV ,  ST MICROELECTRONICS SRL

    Inventor： PAPPALARDO FRANCESCO ,  NOTARANGELO GIUSEPPE ,  SALURSO ELENA ,  GUIDETTI ELIO

    IPC: G06F9/38

    Abstract: A processor architecture (10) e.g. for multimedia applications, includes a plurality of processor clusters (18a, 18b) that provide a vectorial data processing capability. The processing elements in the processor clusters (18a, 18b) are configured to process both data with a given bit length N and data with bit lengths N/2, N/4, and so on according to a Single Instruction Multiple Data (SIMD) paradigm. A load unit (26) is provided for loading into the processor clusters (18a, 18b) data to be processed in the form of sets of more significant bits and less significant bits of operands to be processed according to a same instruction. An intercluster datapath (28) exchanges and/or merges data between the processor clusters (18a, 18b). The intercluster datapath (28) is scalable to activate selected ones of the processor clusters (18a, 18b), whereby the architecture (10) is adapted to operate simultaneously on SIMD, scalar and vectorial data. Preferably, the instruction subsystem (12) has instruction parallelism capability and the intercluster datapath (28) is configured for performing operations on e.g. 2*N data. Preferably, a data cache memory (34) is provided which is accessible either in a scalar mode or in a vectorial mode.

    4.
    发明专利
    未知

    公开(公告)号：DE602004018260D1

    公开(公告)日：2009-01-22

    申请号：DE602004018260

    申请日：2004-02-06

    Applicant: ST MICROELECTRONICS SRL

    Inventor： RIMI FRANCESCO ,  SERRATORE ALBERTO ,  AVELLONE GIUSEPPE ,  PAPPALARDO FRANCESCO ,  GALLUZZO AGOSTINO

    IPC: H04B1/707

    Abstract: In order to perform, according to a received signal (r), a channel-estimation procedure and a cell-search procedure in cellular communication systems, there are executed at least one first operation of correlation of said received signal (r) with secondary synchronization codes (SSC) and a second operation of correlation of said received signal (r) with known midamble codes (mid, MPL, MPS), whilst said channel-estimation procedure comprises a third operation of correlation of at least part of said received signal (r) with known midamble codes (mid, MPL, MPS), said first, second, and third correlation operation being executed by sending at least part (emidamble) of said received signal (r) to an input of a correlation bank (111, 151; 203, 253; 303). There are envisaged the operations of: sending, in a first time interval, the received signal (r) to said correlation bank (303) for executing the first operation of correlation of said received signal (r) with secondary synchronization codes (SSC); sending, in a second time interval, at least part (emidamble) of said received signal (r) to said same correlation bank (303) for executing the second operation of correlation of said received signal (r) with known midamble codes (mid, MPL, MPS); sending, in a second time interval, the received signal (r) to said same correlation bank (303) for executing the third operation of correlation of at least part (emidamble) of said received signal (r) with known midamble codes (mid, MPL, MPS). Preferential application is in mobile communication systems based upon standards such as UMTS, CDMA2000, IS95 or WBCDMA.

    5.
    发明专利
    未知

    公开(公告)号：DE60306895T2

    公开(公告)日：2007-02-01

    申请号：DE60306895

    申请日：2003-05-07

    Applicant: ST MICROELECTRONICS SRL

    Inventor： PAPPALARDO FRANCESCO ,  VISALLI GIUSEPPE

    IPC: H04B10/524 ,  H04L25/49

    Abstract: A data stream (b(t)) including high ("1") and low ("0") logical states is transmitted over an optical link (16) by means of an optical source (15) adapted to be driven (14) via said the data stream to generate an optical signal for transmission over the optical link (16). The optical signal includes optical pulses generated at the occurrence of high logical ("1") states in said data stream (b(t)). The input data stream (b(t)) is coded (2000) into a coded data stream (B(t)) prior to the transmission over the optical link (16). The coding step minimises the logical high states ("1") in the coded data stream (B(t)), and the optical source (15) is driven by means of the coded data stream (B(t)) wherein the number of logical high states ("1") has been minimised.

Patent Agency Ranking