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    • 21. 发明授权
    • Digital audio signal coding and/or deciding method
    • 数字音频信号编码和/或判定方法
    • US5825979A
    • 1998-10-20
    • US576495
    • 1995-12-21
    • Kyoya TsutsuiYoshiaki OikawaOsamu Shimoyoshi
    • Kyoya TsutsuiYoshiaki OikawaOsamu Shimoyoshi
    • G11B20/00H03M7/30H04B1/66G10L3/02G10L9/00
    • H04B1/667G11B20/00007
    • A method and apparatus for high efficiency encoding audio signals. The high-efficiency encoding apparatus includes a transform circuit for transforming an input signal into frequency components and a signal component separating circuit for separating the frequency components into tonal components and noisy components. The high-efficiency encoding apparatus also includes a tonal component encoding circuit for encoding tonal components and a noisy component encoding circuit for encoding noisy components. The tonal components are made up only of signal components of a specified band and encoded along with the information specifying the band. The noisy components are normalized and quantized every pre-set encoding unit and encoded along with the quantization precision information. The information on the numbers of quantization steps of the noisy components is encoded with a smaller number of bits for the high-range side than for the low-range side. With the high-efficiency encoding method and apparatus, not only the main information but also the subsidiary information may be improved in encoding efficiency, while the degree of freedom may be assured in the method of representing the subsidiary information and satisfactory encoding may be achieved.
    • 一种用于高效编码音频信号的方法和装置。 高效率编码装置包括用于将输入信号变换为频率分量的变换电路和用于将频率分量分离为音调分量和噪声分量的信号分量分离电路。 高效编码装置还包括用于编码音调分量的音调分量编码电路和用于编码噪声分量的噪声分量编码电路。 音调分量仅由指定频带的信号分量组成,并与指定频带的信息一起编码。 每个预置编码单元对噪声分量进行归一化和量化,并与量化精度信息一起编码。 关于噪声分量的量化步数的信息,对于高范围侧比对于低范围侧的比特数较少来进行编码。 利用高效编码方法和装置,可以在编码效率上提高主要信息和辅助信息,同时可以在代表辅助信息的方法中确保自由度,并且可以实现令人满意的编码。
    • 22. 发明授权
    • High efficiency digital data encoding and decoding apparatus
    • 高效数字数据编解码装置
    • US5414795A
    • 1995-05-09
    • US857772
    • 1992-03-26
    • Kyoya TsutsuiOsamu Shimoyoshi
    • Kyoya TsutsuiOsamu Shimoyoshi
    • G10L19/02G11B20/00G11B20/10H03M13/00H04B1/66G10L9/00
    • G10L19/0212G11B20/00007G11B20/10527H04B1/665
    • An apparatus for compressing a digital input signal compresses a digital input signal arranged into frames of plural samples. The digital input signal is orthogonally transformed by plural orthogonal transform circuits in blocks derived by dividing the frames by a different divisor in each circuit. The resulting spectral coefficients are quantized using an adaptive number of bits. The output of one orthogonal transform circuit is selected based on the outputs of the orthogonal transform circuits. The digital input signal is divided into plural frequency ranges, and frames are formed in each range. A block length decision circuit determines division of the frames of each range signal into blocks in response to range signal dynamics. The range signals are orthogonally transformed in blocks and the spectral coefficients are quantized. The apparatus also includes a frequency analyzing circuit that derives spectral data points from the input data, and groups them in plural bands. A noise level setting circuit finds the energy in each band and sets a allowable noise level in response to the band energy. A block floating coefficient calculating circuit calculates block floating coefficients based on the maximum spectral data point in each band. A quantizing bit number decision circuit determines the number of bits to use for quantizing in response to the allowable noise level and the block floating coefficients. A quantizing circuit quantizes the spectral data points in response to the quantizing bit number decision circuit.
    • 用于压缩数字输入信号的装置压缩布置成多个样本的帧的数字输入信号。 数字输入信号通过多个正交变换电路在通过在每个电路中除以不同的除数导出的块中进行正交变换。 所得到的频谱系数使用自适应位数进行量化。 基于正交变换电路的输出选择一个正交变换电路的输出。 数字输入信号被分成多个频率范围,并且在每个范围内形成帧。 块长度决定电路确定响应于范围信号动力学将每个范围信号的帧划分成块。 范围信号以块正交变换,并对频谱系数进行量化。 该装置还包括频率分析电路,其从输入数据中导出频谱数据点,并将它们分组成多个频带。 噪声电平设置电路在每个频带中找到能量,并根据频带能量设置可允许的噪声电平。 块浮动系数计算电路基于每个频带中的最大频谱数据点来计算块浮动系数。 量化比特数判定电路根据容许噪声电平和块浮动系数确定用于量化的比特数。 量化电路响应于量化比特数判定电路对频谱数据点进行量化。
    • 28. 发明授权
    • Information transfer apparatus and information recording apparatus
including transfer control means for determining a transfer sequence of
plural information blocks
    • 信息传送装置和信息记录装置,包括用于确定多个信息块的传送顺序的传送控制装置
    • US5925112A
    • 1999-07-20
    • US907548
    • 1997-08-08
    • Naoya HanedaKyoya Tsutsui
    • Naoya HanedaKyoya Tsutsui
    • G11B27/031G11B27/34G11C7/16H04N7/173G06F13/00
    • G11B27/031G11B27/34G11C7/16H04N7/17336G11B2220/61G11C2207/16
    • An apparatus for recording the transfer information transferred to it includes a plurality of recording media for recording the transfer information transferred from an information transfer apparatus, a writing control unit for controlling the writing of the transfer information in the recording media, and a transfer control unit for transmitting the transfer control information and an information transfer request signal to the information transfer apparatus. The transfer control information is the information for determining the transfer sequence of information blocks when the information transfer apparatus transmits the transfer information as the information blocks. The information recording apparatus transmits an information transfer request signal after transmitting the transfer control information to the information transfer apparatus. In this manner, the information recording apparatus receives the transfer information transmitted from the transfer apparatus on a information block basis and records the transfer information on the information block basis on plural recording media. It becomes possible in this manner to record information data on plural recording media not having a uniform writing speed from one recording unit to another, such as a flash memory, by parallel writing in a regular sequence, for enabling highly efficient information transfer by simplified control.
    • 用于记录传送给它的传送信息的装置包括用于记录从信息传送装置传送的传送信息的多个记录介质,用于控制记录介质中的传送信息的写入的写入控制单元和传送控制单元 用于将传送控制信息和信息传送请求信号发送到信息传送装置。 传送控制信息是当信息传送装置发送传送信息作为信息块时确定信息块的传送顺序的信息。 信息记录装置在将传送控制信息发送到信息传送装置之后发送信息传送请求信号。 以这种方式,信息记录装置在信息块的基础上接收从传送装置发送的传送信息,并将关于信息块的传送信息记录在多个记录介质上。 以这种方式,可以通过以规则顺序并行写入来将信息数据记录在不具有从一个记录单元到另一个记录单元的另一个记录单元之类的信息数据,以便通过简单的控制进行高效的信息传送 。
    • 30. 发明授权
    • Signal encoding apparatus, signal decoding apparatus, recording medium,
and signal encoding method
    • 信号编码装置,信号解码装置,记录介质和信号编码方法
    • US5805770A
    • 1998-09-08
    • US448531
    • 1995-06-14
    • Kyoya Tsutsui
    • Kyoya Tsutsui
    • G10L19/00G10L19/02G10L19/14H04B1/66G10L3/02
    • H04B1/667G10L19/002G10L19/0208
    • In the signal encoding apparatus and the signal encoding method of this invention, normalization coefficients for normalizing a first signal are set to an interval finer than that of normalization coefficients for normalizing a second signal. Namely, accuracy of normalization coefficients at the time of normalizing tone characteristic components is caused to be higher than accuracy of normalization coefficients at the time of normalizing noise characteristic components. Thus, this invention can carry out efficient encoding. In other words, this invention can improve accuracy of encoding of tone characteristic components while suppressing the number of bits necessary for encoding of noise components. As a whole, more efficient encoding can be carried out. Moreover, in the recording medium of this invention, since signals efficiently encoded by the signal encoding apparatus or the signal encoding method of this invention are recorded, recording capacity is effectively utilized. In addition, in the signal decoding apparatus, since signals encoded by the signal encoding apparatus or the signal encoding method of this invention are decoded, signal error in decoding can be reduced.
    • PCT No.PCT / JP94 / 01863 Sec。 371 1995年6月14日第 102(e)日期1995年6月14日PCT 1994年11月4日PCT PCT。 公开号WO95 / 12920 PCT 日期1995年5月11日在本发明的信号编码装置和信号编码方法中,对第一信号进行归一化的归一化系数被设定为比归一化系数更精细的间隔,用于归一化第二信号。 即,使归一化色调特性分量时的归一化系数的精度高于归一化噪声特性分量时的归一化系数的精度。 因此,本发明可以进行有效的编码。 换句话说,本发明可以提高音调特征成分的编码精度,同时抑制编码噪声分量所需的比特数。 整体而言,可以进行更高效的编码。 此外,在本发明的记录介质中,由于记录了由本发明的信号编码装置或信号编码方法有效编码的信号,因此有效地利用了记录容量。 此外,在信号解码装置中,由于由信号编码装置编码的信号或本发明的信号编码方法被解码,因此可以减少解码中的信号误差。