中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

162 records (took 0.022 seconds)

    122.
    发明专利
    未知

    公开(公告)号：DE69808146D1

    公开(公告)日：2002-10-24

    申请号：DE69808146

    申请日：1998-01-12

    Applicant: ST MICROELECTRONICS ASIA

    Inventor： ABSAR JAVED ,  GEORGE SAPNA ,  ALVAREZ-TINOCO MARIO

    IPC: H03M7/00 ,  H04B1/66

    Abstract: A method and apparatus for coding audio data in a frequency transform digital audio coder employing differential frequency coefficient exponent coding. Differential coding of exponents places constraints on possible values an exponent can take, which can lead to distortion in the decoded and reconstructed audio signal. The method and apparatus herein can overcome this restriction by mapping the input exponent set to a new set of values which satisfy the differential constraint as well as reducing information loss, thereby minimizing overall signal distortion due to coding restrictions.

    123.
    发明专利
    未知

    公开(公告)号：DE69806976D1

    公开(公告)日：2002-09-05

    申请号：DE69806976

    申请日：1998-12-02

    Applicant: ST MICROELECTRONICS ASIA

    Inventor： HUI WEI

    IPC: H04N7/01 ,  H04N7/26 ,  H04N5/44

    Abstract: A method of processing video data to detect field characteristics of the data, including processing pixel values of the data to obtain differences between the values of two successive fields of the data, processing the difference values to detect interlace patterns in the successive fields, determining if the successive fields belong to a progressive frame based on detection of the interlace patterns, and generating a progressive frame output indicating that a progressive frame has been detected. The pixel values of the first field of the successive fields and a subsequent field to the successive fields are processed to obtain further difference values to determine if the subsequent field is a redundant field, when the progressive frame output is generated.

    An edge enhancement process and system
    124.
    发明公开
    An edge enhancement process and system 有权
    Verfahren und System zur Kantenhervorhebung

    公开(公告)号：EP1480166A1

    公开(公告)日：2004-11-24

    申请号：EP04102100.7

    申请日：2004-05-13

    Applicant: ST Microelectronics Asia Pacific (Pte) Ltd

    Inventor： Chiang, Patricia Wei Yin

    IPC: G06T5/00

    CPC classification number: G06T5/003 ,  G06T2200/12 ,  G06T2207/20192

    Abstract: An edge enhancement system, including a selective edge controller for determining one or more properties of an edge of image data, and for generating one or more weighting factors on the basis of properties of the edge; and a scaling module for scaling an edge enhancement signal by the weighting factors to control the degree of edge enhancement. The image data may represent a still or moving (i.e., video) image. A max-min search circuit determines maximum and minimum turning points closest to the center of the data processing window and that are located on opposing sides of the window, to determine values and locations of maximum and minimum pixels of the edge. An edge-directed prefiltering circuit reduces the amplification of edge fuzziness by smoothing close the edges vertical prior to enhancement. An aliasing protection circuit reduces the visibility of sawtooth defects on predominantly horizontal diagonal edges.

    Abstract translation: 一种边缘增强系统，包括用于确定图像数据的边缘的一个或多个属性的选择性边缘控制器，以及用于基于所述边缘的属性生成一个或多个加权因子; 以及缩放模块，用于通过加权因子缩放边缘增强信号以控制边缘增强的程度。 图像数据可以表示静止或移动（即，视频）图像。 最大最小搜索电路确定最接近数据处理窗口中心并且位于窗口相对侧的最大和最小转折点，以确定边缘的最大和最小像素的值和位置。 边缘预滤波电路通过在增强之前平滑关闭边缘垂直来减少边缘模糊性的放大。 混叠保护电路降低了主要水平对角线边缘上锯齿缺陷的可视性。

    Mask generation process and device in an audio encoder
    125.
    发明公开
    Mask generation process and device in an audio encoder 审中-公开
    einen Audiokodierer的Vorrichtung und Verfahren zum Erzeugen der Verdeckungsschwelle

    公开(公告)号：EP1455344A1

    公开(公告)日：2004-09-08

    申请号：EP04100919.2

    申请日：2004-03-06

    Applicant: ST Microelectronics Asia Pacific (Pte) Ltd

    Inventor： AVERTY, Charles ,  YAO, Xue ,  SINGH Ranjot

    IPC: G10L19/02

    CPC classification number: G10L19/032

    Abstract: A mask generation process for use in encoding audio data, including generating linear masking components from the audio data, generating logarithmic masking components from the linear masking components, and generating a global masking threshold from the logarithmic masking components. The process is a psychoacoustic masking process for use in an MPEG-1-L2 encoder, and includes generating energy values from a Fourier transform of the audio data, determining sound pressure level values from the energy values, selecting tonal and non-tonal masking components on the basis of the energy values, generating power values from the energy values, generating masking thresholds on the basis of the masking components and the power values, and generating signal to mask ratios for a quantizier on the basis of the sound pressure level values and the masking thresholds.

    Abstract translation: 一种用于编码音频数据的掩码产生过程，包括从音频数据生成线性屏蔽分量，从线性屏蔽分量产生对数掩蔽分量，以及从对数掩蔽分量生成全局掩蔽阈值。 该过程是用于MPEG-1-L2编码器的心理声学屏蔽过程，并且包括从音频数据的傅里叶变换产生能量值，从能量值确定声压级值，选择色调和非色调掩蔽分量 基于所述能量值，根据所述能量值产生功率值，基于所述掩蔽分量和所述功率值产生掩蔽阈值，以及基于所述声压级值生成用于量化器的信号与掩模比;以及 屏蔽阈值。

    Apparatus and method of calculating a cyclic redundancy check value for a multi bit input data word
    129.
    发明公开
    Apparatus and method of calculating a cyclic redundancy check value for a multi bit input data word 审中-公开
    计算多比特输入数据字的循环冗余校验值的设备和方法

    公开(公告)号：EP1427109A2

    公开(公告)日：2004-06-09

    申请号：EP03104542.0

    申请日：2003-12-04

    Applicant: ST Microelectronics Asia Pacific (Pte) Ltd ,  NATIONAL UNIVERSITY OF SINGAPORE

    Inventor： Pradhan, Muridula ,  Aldridge, Chris ,  Lee, Chong Yee

    IPC: H03M13/09

    CPC classification number: H03M13/235 ,  H03M13/09 ,  H03M13/2903 ,  H03M13/2957

    Abstract: A method of calculating a Cyclic Redundancy Check (CRC) value for a multi-bit input data word, using a defined generator polynomial is disclosed. The method includes the steps of; serially shifting at least a portion of the input data word into a register; XORing the contents of the register with the generator polynomial if the LSB of the register is '1'; shifting the contents of the register right by one position; shifting into the MSB position of the register a new bit of the input data word, having been XORed with the LSB of the register; repeating the previous step for all message data bits; shifting into the register a number of '0's equal to the length of the generator polynomial; reading from the register the calculated CRC value. Apparatus for performing the method is also disclosed.

    Abstract translation: 公开了一种使用定义的生成多项式来计算多位输入数据字的循环冗余校验（CRC）值的方法。 该方法包括以下步骤： 将输入数据字的至少一部分串行地移位到寄存器中; 如果寄存器的LSB为'1'，则将寄存器的内容与生成多项式异或; 将寄存器的内容向右移动一个位置; 将寄存器的MSB位置移入输入数据字的新位，该寄存器与寄存器的LSB异或; 对所有消息数据位重复上一步; 将多个'0'等于发生器多项式的长度移入寄存器; 从寄存器读取计算出的CRC值。 还公开了用于执行该方法的装置。

Patent Agency Ranking