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    • 12. 发明申请
    • ADAPTIVE SOUND SOURCE VECTOR QUANTIZATION DEVICE, ADAPTIVE SOUND SOURCE VECTOR INVERSE QUANTIZATION DEVICE, AND METHOD THEREOF
    • 自适应声源矢量量化装置,自适应声源矢量反相量化装置及其方法
    • US20100082337A1
    • 2010-04-01
    • US12518944
    • 2007-12-14
    • Kaoru SatoToshiyuki Morii
    • Kaoru SatoToshiyuki Morii
    • G10L19/04
    • G10L19/12G10L19/038
    • Disclosed is an adaptive sound source vector quantization device capable of improving quantization accuracy of adaptive sound source vector quantization while suppressing increase of the calculation amount in CELP sound encoding which performs encoding in sub-frame unit. In the device, a search adaptive sound source vector generation unit (103) cuts out an adaptive sound source vector of a frame length (n) from an adaptive sound source codebook (102), a search impulse response matrix generation unit (105) generates a search impulse response matrix of n n by using an impulse response matrix for each of sub-frames inputted from a synthesis filter (104), a search target vector generation unit (106) adds the target vector of each sub-frame so as to generate a search target vector of frame length (n), an evaluation scale calculation unit (107); calculates the evaluation scale of the adaptive sound source vector quantization by using the search adaptive sound source vector, the search impulse response matrix, and the search target vector.
    • 公开了一种能够提高自适应声源矢量量化的量化精度的自适应声源矢量量化装置,同时抑制以子帧为单位执行编码的CELP声音编码中的计算量的增加。 在该装置中,搜索自适应声源矢量生成部(103)从自适应声源码本(102)切出帧长度(n)的自适应声源矢量,搜索脉冲响应矩阵生成部(105)生成 通过使用从合成滤波器(104)输入的每个子帧的脉冲响应矩阵,nn的搜索脉冲响应矩阵,搜索目标矢量生成单元(106)将每个子帧的目标矢量相加以产生 帧长度(n)的搜索目标矢量,评价比例计算单元(107); 通过使用搜索自适应声源矢量,搜索脉冲响应矩阵和搜索目标矢量来计算自适应声源矢量量化的评估量表。
    • 13. 发明授权
    • Signal decoding apparatus and signal decoding method
    • 信号解码装置及信号解码方法
    • US07636055B2
    • 2009-12-22
    • US12170232
    • 2008-07-09
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • H03M7/00G01L19/12
    • G10L19/005G11B20/1833G11B20/24
    • A signal decoding apparatus preventing substantial noise from being produced when transmission error occurs during decoding of scalable-coded information. In this signal decoding apparatus, a coded information operation section (601) performs error detection for base layer coded information, first enhancement layer coded information and second enhancement layer coded information using transmission error detection bits. A decoding operation control section (602) performs ON/OFF control of control switches (606, 607) in accordance with pattern information indicating error detection results and bit rate patterns, and controls the sampling frequencies of sampling frequency adjustment sections (608, 609). A base layer decoding section (603), first enhancement layer decoding section (604) and second enhancement layer decoding section (605) perform decoding of coded information or frame loss compensation processing, depending on error detection results and bit rates. Sampling frequency adjustment sections (608, 609) adjust the sampling frequency of the decoded signal.
    • 一种信号解码装置,用于在可缩放编码信息的解码期间发生传输错误时,防止产生大量噪声。 在该信号解码装置中,编码信息操作部(601)使用传输错误检测位对基层编码信息,第一增强层编码信息和第二增强层编码信息进行错误检测。 解码操作控制部分根据指示错误检测结果和比特率模式的模式信息执行控制开关(606,607)的接通/断开控制,并且控制采样频率调节部分(608,609)的采样频率, 。 基于层解码部(603),第一增强层解码部(604)和第二增强层解码单元(605),根据错误检测结果和比特率进行编码信息或帧丢失补偿处理的解码。 采样频率调整部(608,659)调整解码信号的采样频率。
    • 14. 发明申请
    • CODING DEVICE AND CODING METHOD
    • 编码设备和编码方法
    • US20090094024A1
    • 2009-04-09
    • US12282287
    • 2007-03-08
    • Tomofumi YamanashiKaoru SatoToshiyuki MoriiMasahiro Oshikiri
    • Tomofumi YamanashiKaoru SatoToshiyuki MoriiMasahiro Oshikiri
    • G10L19/04G10L19/00
    • G10L19/24
    • A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit.
    • 编码装置具有这样的特征,其中基于较低层的编码结果灵活地执行较高层中的最佳编码,并且在有限的情况下向用户提供质量音频信号。 在该编码装置中,基本层编码单元对输入信号进行编码以生成基本层信息源代码,并将作为编码计算出的参数的线性预测系数(LPC)和量子LPC输出到扩展层控制单元。 基本层解码单元解码基本层信息源代码。 加法单元反转基本层解码信号的极性,将其相加于输入信号,并计算差分信号。 扩展层控制单元基于LPC和量子LPC生成表示扩展层中的编码模式的扩展层模式信息。 扩展层编码单元在扩展层控制单元的控制下对从加法单元获得的差异信号进行编码。
    • 15. 发明申请
    • Signal Decoding Apparatus
    • 信号解码装置
    • US20090006086A1
    • 2009-01-01
    • US11658585
    • 2005-07-25
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • G10L21/02
    • G10L19/24G10L19/005
    • A signal decoding apparatus that can suppress any large unusual sounds to provide decoded signals of improved audibility even when the number of hierarchical layers to be used in the decoding process varies due to a packet loss or the like in communication utilizing a scalable encoding/decoding technique. In the signal decoding apparatus, a gain adjusting part (2308) adjusts, based on a control of a decoding control part (2301), the gain of a basic layer decoded signal outputted from a basic layer decoding part (2302). A gain adjusting part (2309) adjusts, based on a control of the decoding control part (2301), the gain of a first expansion layer decoded signal outputted from a first expansion layer decoding part (2303). A gain adjusting part (2310) adjusts, based on a control of the decoding control part (2301), the gain of a second expansion layer decoded signal outputted from a second expansion layer decoding part (2304).
    • 即使当在解码处理中使用的分层数量由于在使用可伸缩编码/解码技术的通信中的分组丢失等而变化时,也可以抑制任何大的异常声音来提供改善的可听性的解码信号的信号解码装置 。 在信号解码装置中,增益调整部(2308)根据解码控制部(2301)的控制,调整从基本层解码部(2302)输出的基本层解码信号的增益。 增益调整部(2309)根据解码控制部(2301)的控制来调整从第一扩展层解码部(2303)输出的第一扩展层解码信号的增益。 增益调整部(2310)根据解码控制部(2301)的控制来调整从第二扩展层解码部(2304)输出的第二扩展层解码信号的增益。
    • 16. 发明授权
    • Speech coding apparatus including enhancement layer performing long term prediction
    • 包括执行长期预测的增强层的语音编码装置
    • US07299174B2
    • 2007-11-20
    • US10554619
    • 2004-04-30
    • Kaoru SatoToshiyuki Morii
    • Kaoru SatoToshiyuki Morii
    • G10L19/04G10L19/12
    • G10L19/24
    • To implement scalable coding, a base layer coding section encodes an input signal to obtain base layer coded information, which is decoded by a base layer decoding section to obtain a base layer decoded signal and long term prediction information (pitch lag). An adding section inverts the polarity of the base layer decoded signal to add to the input signal, and obtains a residual signal. An enhancement layer coding section encodes a long term prediction coefficient calculated using the long term prediction information and the residual signal to obtain enhancement layer coded information. Also using the long term prediction information, an enhancement layer decoding section decodes the enhancement layer coded information to obtain an enhancement layer decoded signal. An adding section adds the base layer decoded signal and enhancement layer decoded signal to obtain a speech/sound signal.
    • 为了实现可分级编码,基层编码部分对输入信号进行编码以获得由基本层解码部分解码以获得基本层解码信号和长期预测信息(音调滞后)的基本层编码信息。 加法部分反转基本层解码信号的极性以加到输入信号上,并获得残留信号。 增强层编码部分编码使用长期预测信息和残差信号计算的长期预测系数,以获得增强层编码信息。 还使用长期预测信息,增强层解码部分对增强层编码信息进行解码以获得增强层解码信号。 加法部分添加基本层解码信号和增强层解码信号以获得语音/声音信号。
    • 17. 发明申请
    • Voice/musical sound encoding device and voice/musical sound encoding method
    • 语音/音乐声音编码装置和语音/音乐声音编码方法
    • US20070179780A1
    • 2007-08-02
    • US10596773
    • 2004-12-20
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • Tomofumi YamanashiKaoru SatoToshiyuki Morii
    • G10L19/00
    • G10L19/032
    • A voice and musical tone coding apparatus is provided that can perform high-quality coding by executing vector quantization taking the characteristics of human hearing into consideration. In this voice and musical tone coding apparatus, a quadrature transformation processing section (201) converts a voice and musical tone signal from time components to frequency components. An auditory masking characteristic value calculation section (203) finds an auditory masking characteristic value from a voice and musical tone signal. A vector quantization section (202) performs vector quantization changing a calculation method of a distance between a code vector found from a preset codebook and a frequency component based on an auditory masking characteristic value.
    • 提供一种语音和乐音编码装置,其可以考虑到人类听觉的特征,执行矢量量化,从而进行高质量的编码。 在这种语音和乐音编码装置中,正交变换处理部(201)将语音和乐音信号从时间分量转换为频率分量。 听觉掩蔽特性值计算部(203)从语音和乐音信号中求出听觉掩蔽特性值。 矢量量化部(202)进行矢量量化,根据听觉掩蔽特性值,改变从预设码本找到的码矢量与频率分量之间的距离的计算方法。
    • 18. 发明申请
    • Image forming system and method
    • 图像形成系统及方法
    • US20060256393A1
    • 2006-11-16
    • US11429209
    • 2006-05-08
    • Atsuya TakahashiAkihiro NakamuraKaoru SatoKazuhisa MaruyamaRyuichi Yoshizawa
    • Atsuya TakahashiAkihiro NakamuraKaoru SatoKazuhisa MaruyamaRyuichi Yoshizawa
    • H04N1/00
    • B41J13/0009B65H7/20B65H2513/51B65H2220/02
    • At step S301, since none of conveyance sensors 114, 116 and 121 detect residual paper, a CPU 203 notifies a CPU 201 that it is in a residual paper check start instruction waiting mode. At step S302, since a conveying path sensor 111 in an optional paper feed unit 101 does not detect residual paper, the CPU 202 notifies the CPU 201 that it is in a residual paper check start instruction waiting mode. At step S303, since an inlet sensor 122 of an optional paper output unit 103 does not detect residual paper, the CPU 204 notifies the CPU 201 that it is in a residual paper check start instruction waiting mode. After confirming that all the units are in the waiting mode, the CPU 201 issues a residual paper check start instruction to all the units simultaneously to improve usability by reducing initializing time.
    • 在步骤S301,由于传送传感器114,116和121都没有检测到残留的纸张,所以CPU 203通知CPU201它处于残留纸张检查开始指令等待模式。 在步骤S302中,由于在可选的供纸单元101中的传送路径传感器111不检测到残留的纸张,所以CPU 202通知CPU 201它处于残留纸张检查开始指示等待模式。 在步骤303C中,由于可选纸张输出单元103的入口传感器122没有检测到残留的纸张,CPU 204通知CPU 201它处于残留纸张检查开始指令等待模式。 在确认所有单元处于等待模式之后,CPU 201通过减少初始化时间同时向所有单元发出残留纸张检查开始指令以提高可用性。