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    • 6. 发明授权
    • Encoding device, decoding device, encoding method and decoding method
    • 编码装置,解码装置,编码方法和解码方法
    • US09384749B2
    • 2016-07-05
    • US14238041
    • 2012-08-24
    • Takuya KawashimaKatsunori DaimouMasahiro Oshikiri
    • Takuya KawashimaKatsunori DaimouMasahiro Oshikiri
    • G10L21/0388G10L19/26G10L19/02
    • G10L19/265G10L19/0204G10L21/0388
    • By copying to a high-frequency band portion (extension band) a low-frequency band portion in which peaking has been set to a sufficiently low state, this encoding device is capable of preventing generation of a spectrum with overly high peaking in the high-frequency band portion, and of generating a high-quality extension band spectrum. This device comprises: a maximum value search unit which searches, in each of multiple sub-bands obtained by dividing the low-frequency band portion of an audio signal and/or music signal below a prescribed frequency, for the maximum value of the amplitude of a first spectrum obtained by decoding first encoded data, which is encoded data in the low-frequency band portion; and an amplitude normalization unit which obtains a normalized spectrum by normalizing, at the maximum values of the amplitude of each sub-band, the first spectrum contained in each sub-band.
    • 通过将峰值设定为足够低的低频区域的高频带部分(扩展频带)复制,能够防止在高频带部分 频带部分,并且产生高质量的扩展频带。 该装置包括:最大值搜索单元,其在通过将音频信号的低频带部分和/或音频信号低于规定频率的下划线获得的多个子带中搜索最大值的幅度的最大值 通过对作为低频带部分中的编码数据的第一编码数据进行解码而获得的第一频谱; 以及振幅归一化单元,其通过在每个子带的振幅的最大值处归一化包含在每个子带中的第一频谱来获得归一化频谱。
    • 7. 发明授权
    • Light emitting element and manufacturing method thereof
    • 发光元件及其制造方法
    • US07683379B2
    • 2010-03-23
    • US11572547
    • 2005-07-27
    • Kenji GotoTakuya KawashimaNobuo TanabeTatsuya Ito
    • Kenji GotoTakuya KawashimaNobuo TanabeTatsuya Ito
    • H01L27/15
    • H01L33/42
    • A light emitting device having little variation in the intensity of light emitted from the light emitting surface is provided. The light emitting device of exemplary embodiments of the present invention includes a laminated body with a first conductivity type layer and a second conductivity type layer, with a light emitting portion therebetween. The light emitting device also includes a metal thin film layer on the second conductivity type layer of the laminated body, and a transparent conductor on the metal thin film layer. The transparent conductor includes a single layer of transparent conductive film. The grain size in the light emitting surface of the transparent conductive film is not less than 30 nm and not greater than 300 nm.
    • 提供了从发光面发射的光的强度变化小的发光装置。 本发明的示例性实施例的发光器件包括具有第一导电类型层和第二导电类型层的层叠体,其间具有发光部分。 发光装置还包括在层叠体的第二导电类型层上的金属薄膜层和在金属薄膜层上的透明导体。 透明导体包括单层透明导电膜。 透明导电膜的发光面的晶粒尺寸不小于30nm且不大于300nm。
    • 8. 发明申请
    • AUDIO SWITCHING DEVICE AND AUDIO SWITCHING METHOD
    • 音频切换设备和音频切换方法
    • US20100036656A1
    • 2010-02-11
    • US11722904
    • 2006-01-12
    • Takuya KawashimaHiroyuki Ehara
    • Takuya KawashimaHiroyuki Ehara
    • G10L21/00
    • G10L19/24G10L21/0364
    • There is disclosed a speech switching device capable of improving quality of a decoded signal. In the device, a weighted addition unit (114) outputs a mixed signal of a narrow-band speech signal and a wide-band speech signal when switching the speech signal band. A mixing unit formed by an extended layer decoded speech amplifier (122) and an adder (124) mixes the narrow-band speech signal with the wide-band speech signal while changing the mixing ratio of the narrow-band speech signal and the wide-band speech signal as the time elapses, thereby obtaining a mixed signal. An extended layer decoded speech gain controller (120) variably sets the degree of change of the mixing ratio by the time.
    • 公开了能够提高解码信号质量的语音切换装置。 在该装置中,当切换语音信号频带时,加权加法单元(114)输出窄带语音信号和宽带语音信号的混合信号。 由扩展层解码语音放大器(122)和加法器(124)形成的混合单元将窄带语音信号与宽带语音信号混合,同时改变窄带语音信号和宽带语音信号的混合比, 随着时间的流逝,获得混合信号。 扩展层解码语音增益控制器(120)将混合比的变化程度可变地设定为时间。
    • 9. 发明申请
    • AUDIO DECODING DEVICE AND AUDIO DECODING METHOD
    • 音频解码设备和音频解码方法
    • US20090234653A1
    • 2009-09-17
    • US12159312
    • 2006-12-26
    • Takuya KawashimaHiroyuki Ehara
    • Takuya KawashimaHiroyuki Ehara
    • G10L13/00
    • G10L19/265G10L19/005G10L21/02
    • Provided is an audio decoding device performing frame loss compensation capable of obtaining a decoded audio which is natural for ears with little noise. The audio decoding device includes: a non-cyclic pulse waveform detection unit (19) for detecting a non-cyclic pulse waveform section in a n−1-th frame which is repeatedly used with a pitch cycle in the n-th frame upon compensation of loss of the n-th frame; a non-cyclic pulse waveform suppression unit (17) for suppressing a non-cyclic pulse waveform by replacing an audio source signal existing in the non-cyclic pulse waveform section in the n−1-th frame by a noise signal; and a synthesis filter (20) for using a linear prediction coefficient decoded by an LPC decoding unit (11) to perform synthesis by a synthesis filter by using the audio source signal of the n−1-th frame from the non-cyclic pulse waveform suppression unit (17) as a drive audio source, thereby obtaining the decoded audio signal of the n-th frame.
    • 提供了一种执行帧损失补偿的音频解码装置,其能够获得对具有小噪声的耳朵是自然的解码音频。 音频解码装置包括:非循环脉搏波形检测单元,用于检测第n-1帧中的非循环脉搏波形部分,其在补偿时与第n帧中的音调周期重复使用 第n帧的丢失; 非循环脉搏波形抑制单元,用于通过用噪声信号代替第n-1帧中存在于非循环脉波波形段中的音频源信号来抑制非循环脉搏波形; 以及合成滤波器(20),用于使用由LPC解码单元(11)解码的线性预测系数,通过使用来自非循环脉冲波形的第n-1帧的音频源信号通过合成滤波器进行合成 抑制单元(17)作为驱动音频源,从而获得第n帧的解码音频信号。
    • 10. 发明申请
    • SCALABLE DECODER AND DISAPPEARED DATA INTERPOLATING METHOD
    • 可扩展解码器和解密数据插值方法
    • US20090141790A1
    • 2009-06-04
    • US11994140
    • 2006-06-27
    • Takuya KawashimaHiroyuki Ehara
    • Takuya KawashimaHiroyuki Ehara
    • G10L19/00H04B1/66
    • G10L19/005G10L19/24
    • A scalable decoder capable of preventing degradation of the quality of the decoded signal in a disappeared data interpolation in band scalable coding. A core layer decoding section (101) acquires a core layer decoded signal and narrow band spectrum information by decoding. A narrow band spectrum slope computing section (103) computes the slope of an attenuation line of a narrow band spectrum from the narrow band spectrum information. An extended layer disappearance detection section (104) detects whether extended layer coded data has disappeared or not. An extended layer decoding section (105) normally decodes the extended layer coded data. If the extended layer disappears, a parameter required for decoding is interpolated and synthesizes an interpolation decoded signal by the interpolated parameter. The gain of the interpolated data is controlled according to the results of the computation, by the narrow band spectrum slope computing section (103).
    • 一种可扩展的解码器,其能够防止频带可缩放编码中消失的数据插值中的解码信号的质量劣化。 核心层解码部(101)通过解码获取核心层解码信号和窄带频谱信息。 窄带频谱斜率计算部分(103)从窄带频谱信息计算窄带频谱的衰减线的斜率。 扩展层消失检测部(104)检测扩展层编码数据是否已经消失。 扩展层解码部(105)通常对扩展层编码数据进行解码。 如果扩展层消失,则内插解码所需的参数,并通过内插参数合成内插解码信号。 通过窄带频谱斜率计算部(103)根据计算结果来控制内插数据的增益。