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    COMPOSITION OF A DIGITAL IMAGE FOR DISPLAY ON A TRANSPARENT SCREEN
    1.
    发明申请
    COMPOSITION OF A DIGITAL IMAGE FOR DISPLAY ON A TRANSPARENT SCREEN 审中-公开
    用于在透明屏幕上显示的数字图像的组成

    公开(公告)号：WO2012019973A3

    公开(公告)日：2012-06-21

    申请号：PCT/EP2011063550

    申请日：2011-08-05

    Applicant: ERICSSON TELEFON AB L M ,  GUSTAFSSON HARALD ,  YUAN SONG ,  PERSSON JAN PATRIK ,  PERSSON PER

    Inventor： GUSTAFSSON HARALD ,  YUAN SONG ,  PERSSON JAN PATRIK ,  PERSSON PER

    IPC: G02B27/01 ,  G06T7/00

    CPC classification number: G09G5/00 ,  G02B27/017 ,  G02B2027/0112 ,  G02B2027/0118 ,  G02B2027/0138 ,  G02B2027/014 ,  G02B2027/0178 ,  G02B2027/0187 ,  G06T7/80 ,  G09G2340/0442 ,  G09G2340/045 ,  G09G2340/0464 ,  G09G2340/0492 ,  G09G2340/14 ,  G09G2380/00 ,  G09G2380/02

    Abstract: Teachings herein prepare a digital image for display on a substantially transparent screen. The teachings advantageously recognize that the perceptibility of the digital image on the screen will often depend on what is visible to a user through the screen, since that will effectively serve as the background of the screen. A method of preparing a digital image thus includes dynamically calculating which part of an environmental background is visible to a user through the screen and thereby serves as an effective background of the screen. This calculation may entail obtaining an image of the environmental background and identifying which part of that image serves as the effective background (e.g., based on the angle at which the user views the screen). The method further includes composing the digital image for perceptibility as viewed against that effective background and outputting the composed image as digital data for display on the screen.

    Abstract translation: 此处的教导准备数字图像以在基本上透明的屏幕上显示。 这些教导有利地认识到，屏幕上的数字图像的可感知性通常取决于用户通过屏幕可见的内容，因为这将有效地用作屏幕的背景。 因此，准备数字图像的方法包括通过屏幕动态地计算环境背景的哪一部分对用户可见，从而用作屏幕的有效背景。 该计算可能需要获得环境背景的图像并且识别该图像的哪个部分用作有效背景（例如，基于用户观看屏幕的角度）。 所述方法进一步包括：针对该有效背景构图用于可感知性的数字图像，并输出合成图像作为用于在屏幕上显示的数字数据。

    SPEECH BANDWIDTH EXTENSION
    2.
    发明申请
    SPEECH BANDWIDTH EXTENSION 审中-公开

    公开(公告)号：WO02056295A2

    公开(公告)日：2002-07-18

    申请号：PCT/EP0200181

    申请日：2002-01-10

    Applicant: ERICSSON TELEFON AB L M ,  GUSTAFSSON HARALD

    Inventor： GUSTAFSSON HARALD

    IPC: G10L13/00 ,  G10L21/02 ,  G10L

    CPC classification number: G10L21/038

    Abstract: A common narrow-band speech signal is expanded into a wide-band speech signal. The expanded speech signal gives the impression of a wide-band speech signal regardless of what type of vocoder is used. Extending the narrow-band speech signal into a lower range involves analyzing the narrow-band speech signal to generate one or more parameters, and synthersizing a lower frequency-band signal based on at least one of the one or more parameters. The synthesized lower frequency-band signal is then combined with a signal that is derived from (e.g., via up-sampling) the narrow-band speech signal. In preferred emobodiments, a pitch frequency parameter is generated, and generation of the lower frequency-band signal includes generating continuous sine tones that are frequency shifted with the pitch frequency parameter.

    Abstract translation: 普通的窄带语音信号被扩展为宽带语音信号。 无论使用何种类型的声码器，扩展的语音信号都给出了宽带语音信号的印象。 将窄带语音信号扩展到较低范围涉及分析窄带语音信号以生成一个或多个参数，并且基于一个或多个参数中的至少一个来合成较低频带信号。 然后将合成的较低频带信号与从（例如，经由上采样）窄带语音信号导出的信号组合。 在优选的实施例中，生成音调频率参数，并且生成较低频带信号包括生成与音调频率参数频移的连续正弦音调。

    4.
    发明专利
    未知

    公开(公告)号：DE602007005790D1

    公开(公告)日：2010-05-20

    申请号：DE602007005790

    申请日：2007-06-26

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GUSTAFSSON HARALD ,  PSERSSON PER

    IPC: G06F9/38 ,  G06F9/32

    Abstract: A data-processing unit has a fetching circuitry (20) and execution circuitry (30a, 30b). The data-processing unit has an instruction set comprising a nested-loop instruction. The fetching circuitry is arranged to fetch the nested-loop instruction, and the execution circuitry is arranged to execute the nested-loop instruction. The nested-loop instruction comprises at least one instruction field that is adapted to indicate a number of iterations of an outer loop of the nested loop and one or more operations to be performed by the outer loop. Moreover, the at least one instruction field is further adapted to indicate a number of iterations of an inner loop of the nested loop and one or more operations to be performed by the inner loop. A method for fetching, decoding, and executing the nested-loop instruction is also described as well as the structure of the nested-loop instruction.

    5.
    发明专利
    未知

    公开(公告)号：DE69905035D1

    公开(公告)日：2003-02-27

    申请号：DE69905035

    申请日：1999-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GUSTAFSSON HARALD ,  CLAESSON INGVAR ,  NORDHOLM SVEN

    IPC: G10L21/0208 ,  G10L11/00 ,  G10L15/20 ,  G10L19/02 ,  G10L21/02 ,  G10L21/04 ,  H04M1/00 ,  G10L21/00

    Abstract: Methods and apparatus for providing speech enhancement in noise reduction systems include spectral subtraction algorithms using linear convolution, causal filtering and/or spectrum dependent exponential averaging of the spectral subtraction gain function. According to exemplary embodiments, low order spectrum estimates are developed which have less frequency resolution and reduced variance as compared to spectrum estimates in conventional spectral subtraction systems. The low order spectra are used to form a gain function having a desired low variance which in turn reduces musical tones in the spectral subtraction output signal. Advantageously, the gain function can be further smoothed across blocks using input spectrum dependent exponential averaging. Additionally, the low order of the gain function permits a phase to be added during interpolation so that the spectral subtraction gain filter is causal and prevents discontinuities between blocks.

    6.
    发明专利
    未知

    公开(公告)号：AT231644T

    公开(公告)日：2003-02-15

    申请号：AT99930025

    申请日：1999-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GUSTAFSSON HARALD ,  CLAESSON INGVAR ,  NORDHOLM SVEN

    IPC: G10L21/0208 ,  G10L11/00 ,  G10L15/20 ,  G10L19/02 ,  G10L21/02 ,  G10L21/04 ,  H04M1/00 ,  G10L21/00

    Abstract: Methods and apparatus for providing speech enhancement in noise reduction systems include spectral subtraction algorithms using linear convolution, causal filtering and/or spectrum dependent exponential averaging of the spectral subtraction gain function. According to exemplary embodiments, low order spectrum estimates are developed which have less frequency resolution and reduced variance as compared to spectrum estimates in conventional spectral subtraction systems. The low order spectra are used to form a gain function having a desired low variance which in turn reduces musical tones in the spectral subtraction output signal. Advantageously, the gain function can be further smoothed across blocks using input spectrum dependent exponential averaging. Additionally, the low order of the gain function permits a phase to be added during interpolation so that the spectral subtraction gain filter is causal and prevents discontinuities between blocks.

    Speech bandwidth extension
    7.
    发明专利
    Speech bandwidth extension 未知

    公开(公告)号：AU2002237264A1

    公开(公告)日：2002-07-24

    申请号：AU2002237264

    申请日：2002-01-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GUSTAFSSON HARALD

    IPC: G10L13/00 ,  G10L21/02 ,  G10L19/00

    Abstract: A common narrow-band speech signal is expanded into a wide-band speech signal. The expanded speech signal gives the impression of a wide-band speech signal regardless of what type of vocoder is used. Extending the narrow-band speech signal into a lower range involves analyzing the narrow-band speech signal to generate one or more parameters, and synthesizing a lower frequency-band signal based on at least one of the one or more parameters. The synthesized lower frequency-band signal is then combined with a signal that is derived from (e.g., via up-sampling) the narrow-band speech signal. In preferred embodiments, a pitch frequency parameter is generated, and generation of the lower frequency-band signal includes generating continuous sine tones that are frequency shifted with the pitch frequency parameter.

    8.
    发明专利
    未知

    公开(公告)号：BR9910740A

    公开(公告)日：2001-02-13

    申请号：BR9910740

    申请日：1999-05-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： GUSTAFSSON HARALD ,  CLAESSON INGVAR ,  NORDHOLM SVEN

    IPC: G10L21/0208 ,  G10L20060101 ,  G10L11/00 ,  G10L15/20 ,  G10L19/02 ,  G10L21/00 ,  G10L21/02 ,  G10L21/04 ,  H04B1/38 ,  H04B15/00 ,  H04M1/00 ,  G10L3/02

    Abstract: Methods and apparatus for providing speech enhancement in noise reduction systems include spectral subtraction algorithms using linear convolution, causal filtering and/or spectrum dependent exponential averaging of the spectral subtraction gain function. According to exemplary embodiments, successive blocks of a spectral subtraction gain function are averaged based on a discrepancy between an estimate of a spectral density of a noisy speech signal and an averaged estimate of a spectral density of a noise component of the noisy speech signal. The successive gain function blocks are averaged, for example, using controlled exponential averaging. Control is provided, for example, by making a memory of the exponential averaging inversely proportional to the discrepancy. Alternatively, the averaging memory can be made to increase in direct proportion with decreases in the discrepancy, while exponentially decaying with increases in the discrepancy to prevent audible voice shadows.

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