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1. 发明授权

US5241603A Digital signal encoding apparatus 失效
标题翻译：数字信号编码设备
公开(公告)号：US5241603A
公开(公告)日：1993-08-31
申请号：US703830
申请日：1991-05-21
申请人： Kenzo Akagiri , Kyoya Tsutsui , Yoshihito Fujiwara
发明人： Kenzo Akagiri , Kyoya Tsutsui , Yoshihito Fujiwara
IPC分类号： G10L19/14 , G06T9/00 , H03M7/30 , H04B1/66
CPC分类号： H04B1/667 , G06T9/007
摘要： The present invention relates to a digital signal encoding apparatus in which an input digital signal has its frequency range divided into a number of frequency bands so that the bandwidths are broader at higher frequencies. A first allowable noise level based on the energy levels in the respective bands, and a second allowable noise level based on the energies of the signals temporally adjacent to the signals of a frequency band under consideration, are set. Signal components of each frequency band are quantized with a number of bits corresponding to a difference between an output synthesized from the first and second noise levels and the energy level of each frequency band. In this manner, the bit rate may be lowered while deterioration in the sound quality is minimized.

2. 发明申请

US20070216552A1 Signal reproducing method and device, signal recording method and device, and code sequence generating method and device 失效
标题翻译：信号再现方法和装置，信号记录方法和装置，以及码序列生成方法和装置
公开(公告)号：US20070216552A1
公开(公告)日：2007-09-20
申请号：US11803363
申请日：2007-05-14
申请人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
发明人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
IPC分类号： H03M7/00
CPC分类号： G11B20/00086 , G11B2220/2562
摘要： It is intended to remove a risk of illegal high quality restoration while enabling trial viewing of contents such as music, to make it possible to reproduce contents with high quality by acquiring a relatively small amount of data, and to make it possible to implement hardware at a lower cost. To generate trial listening data containing dummy data, a pseudo random number R is generated first. A remainder r of R divided by 128 is calculated. The remainder r is coded and incorporated into high sound quality restoration data. A bandwidth limitation region of trial listening data is replaced by dummy data starting from its rth bit. As a result, the head position of the dummy data in the trial listening data varies frame by frame, whereby the safety of the trial listening data can be increased.
摘要翻译：旨在消除非法高质量恢复的风险，同时能够对诸如音乐的内容进行试用，从而可以通过获取相对少量的数据来高质量地再现内容，并且使得可以在成本较低。为了生成包含伪数据的试听数据，首先生成伪随机数R. 计算R的余数r除以128。其余的r被编码并被并入高音质恢复数据。试听数据的带宽限制区域由从其第r位开始的虚拟数据替换。结果，试听数据中的伪数据的头位置逐帧变化，从而可以提高试听数据的安全性。

3. 发明授权

US5301205A Apparatus and method for data compression using signal-weighted quantizing bit allocation 失效
标题翻译：使用信号加权量化位分配的数据压缩的装置和方法
公开(公告)号：US5301205A
公开(公告)日：1994-04-05
申请号：US011376
申请日：1993-01-29
申请人： Kyoya Tsutsui , Kenzo Akagiri
发明人： Kyoya Tsutsui , Kenzo Akagiri
IPC分类号： H03H17/02 , G11B20/00 , G11B20/10 , H03M7/30 , H04B1/66 , H04K1/00
CPC分类号： H04B1/665 , G11B20/00007 , G11B20/10527
摘要： A data compression apparatus for compressing a digital input signal to provide a compressed digital output signal. In the apparatus, a circuit derives plural spectral coefficients from the digital input signal, and groups the spectral coefficients into bands. An adaptive bit allocation circuit adaptively allocates a number of spectrum-dependent quantizing bits among the bands to allocate to each band a number of spectrum-dependent quantizing bits for quantizing each of the spectral coefficients in the band. The number of spectrum-dependent quantizing bits allocated to each band by the adaptive bit allocation circuit is determined according to the band magnitude, weighted depending on the band frequency.
摘要翻译：一种用于压缩数字输入信号以提供压缩数字输出信号的数据压缩装置。在该装置中，电路从数字输入信号中导出多个频谱系数，并将频谱系数分组成频带。自适应位分配电路自适应地分配频带中的多个频谱相关量化比特，以向每个频带分配多个频谱相关量化比特，用于量化频带中的每个频谱系数。由自适应位分配电路分配给每个频带的频谱相关量化位的数量根据根据频带频率加权的频带幅度来确定。

4. 发明授权

US5260980A Digital signal encoder 失效
标题翻译：数字信号编码器
公开(公告)号：US5260980A
公开(公告)日：1993-11-09
申请号：US747806
申请日：1991-08-20
申请人： Kenzo Akagiri , Kyoya Tsutsui
发明人： Kenzo Akagiri , Kyoya Tsutsui
IPC分类号： G10L19/02 , H03M7/30 , H04B1/66
CPC分类号： H03M7/3053 , H04B1/665
摘要： An apparatus for encoding an input digital signal divides the input digital signal to produce frequency components of increasing bandwidth as the frequency increases, performs blocking on each of the frequency components to produce blocks of decreasing time length as the frequency increases, performs a fast Fourier transformation on each block and quantizes each block using a quantization characteristic set in accordance with a comparison of the energy of each frequency component in each block with a masking spectrum. The masking spectrum includes both a masking effect on the frequency base of the input signal and masking effect on the time base of the input signal and may further include effects of the minimum audible curve of the human hearing sense characteristic. Utilization of both the temporal and frequency masking effects permits reduction in the bit rate of the encoded signal using real time processing and without deterioration in sound quality.

5. 发明授权

US06794996B2 Content supply system and information processing method 失效
标题翻译：内容供应系统和信息处理方法
公开(公告)号：US06794996B2
公开(公告)日：2004-09-21
申请号：US10239848
申请日：2003-04-01
申请人： Kyoya Tsutsui , Kenzo Akagiri , Tadao Yoshida , Naoya Haneda
发明人： Kyoya Tsutsui , Kenzo Akagiri , Tadao Yoshida , Naoya Haneda
IPC分类号： H03M700
CPC分类号： H04N19/124 , G06Q20/12 , G06Q20/123 , G06Q20/1235 , G06Q30/06 , G07F17/0014 , G11B20/00086 , G11B20/00818 , G11B20/00978 , G11B20/10 , G11B27/034 , G11B27/105 , G11B27/3063 , G11B2220/20 , G11B2220/216 , G11B2220/2525 , G11B2220/2545 , G11B2220/41 , H04N19/18 , H04N19/60 , H04N21/234345 , H04N21/234354 , H04N21/23476 , H04N21/4621 , H04N21/4627 , H04N21/47211 , H04N21/8113 , H04N21/8549
摘要： A center (content supply center) (1865) for storing and managing contents, and user terminals (1861 to 1864) used by respective users are connected via networks (861 to 867). The center (1865) sends signals of contents for trial viewing/listening to the user terminals for free or at a low price. The user terminals (1861 to 1864) can receive the signals of the contents for trial viewing/listening and select and purchase only the content that the user likes from the received contents so as to reproduce the content with high quality. This enables trial viewing/listening. It is not necessary to download a large quantity of data with high quality from the content supply center or the like and there will be more opportunities of content purchase.
摘要翻译：用于存储和管理内容的中心（内容供应中心）（1865）和各用户使用的用户终端（1861至1864）经由网络（861至867）连接。中心（1865）免费或以低价格发送用于试听/收听用户终端的内容信号。用户终端（1861至1864）可以接收用于试听/收听的内容的信号，并仅从所接收的内容中仅选择和购买用户喜欢的内容，以便以高质量再现内容。这样可以进行试听/聆听。没有必要从内容供应中心等下载大量高质量的数据，并且将有更多的内容购买机会。

6. 发明授权

US5438643A Compressed data recording and/or reproducing apparatus and signal processing method 失效
标题翻译：压缩数据记录和/或再现装置和信号处理方法
公开(公告)号：US5438643A
公开(公告)日：1995-08-01
申请号：US230303
申请日：1994-04-20
申请人： Kenzo Akagiri , Yoshiaki Oikawa , Kyoya Tsutsui
发明人： Kenzo Akagiri , Yoshiaki Oikawa , Kyoya Tsutsui
IPC分类号： G11B20/00 , G11B20/10 , G11B27/031 , G11B27/30 , G11B27/34 , G10L3/02
CPC分类号： G11B20/10527 , G11B20/00007 , G11B27/031 , G11B27/3063 , G11B27/34 , G11B2220/2525 , G11B2220/2545 , G11B2220/61
摘要： Apparatus for recording an information signal as bit-compressed digital data. The apparatus comprises a bit compressor and a recording system. The bit compressor receives the information signal as digital data. The digital data include bits, and the bits include redundant bits. The bit compressor compresses the digital data by removing only the redundant bits from the digital data to generate the bit-compressed digital data at a variable bit rate. The redundant bits are bits that result in a quantizing noise level lower than an allowed noise level at which the quantizing noise is imperceptible to a human auditory sense. The allowable noise level is determined by a masking threshold and a minimum audibility limit. The recording system receives the bit-compressed digital data from the bit compressor and records the bit-compressed data on a recording medium.
摘要翻译：用于将信息信号记录为位压缩的数字数据的装置。该装置包括位压缩器和记录系统。位压缩器接收信息信号作为数字数据。数字数据包括位，并且这些位包括冗余位。位压缩器通过从数字数据中仅去除冗余位来压缩数字数据，以可变比特率生成位压缩的数字数据。冗余位是导致量化噪声电平低于量化噪声对于人类听觉无法察觉的允许噪声电平的位。允许的噪声电平由屏蔽阈值和最小可听限度决定。记录系统从位压缩器接收位压缩的数字数据，并将位压缩的数据记录在记录介质上。

7. 发明授权

US07372375B2 Signal reproducing method and device, signal recording method and device, and code sequence generating method and device 失效
标题翻译：信号再现方法和装置，信号记录方法和装置，以及码序列生成方法和装置
公开(公告)号：US07372375B2
公开(公告)日：2008-05-13
申请号：US11803363
申请日：2007-05-14
申请人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
发明人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
IPC分类号： H03M7/00
CPC分类号： G11B20/00086 , G11B2220/2562
摘要： It is intended to remove a risk of illegal high quality restoration while enabling trial viewing of contents such as music, to make it possible to reproduce contents with high quality by acquiring a relatively small amount of data, and to make it possible to implement hardware at a lower cost. To generate trial listening data containing dummy data, a pseudo random number R is generated first. A remainder r of R divided by 128 is calculated. The remainder r is coded and incorporated into high sound quality restoration data. A bandwidth limitation region of trial listening data is replaced by dummy data starting from its rth bit. As a result, the head position of the dummy data in the trial listening data varies frame by frame, whereby the safety of the trial listening data can be increased.
摘要翻译：旨在消除非法高质量恢复的风险，同时能够对诸如音乐的内容进行试用，从而可以通过获取相对少量的数据来高质量地再现内容，并且使得可以在成本较低。为了生成包含伪数据的试听数据，首先生成伪随机数R. 计算R的余数r除以128。其余的r被编码并被并入高音质恢复数据。试听数据的带宽限制区域由从其第r位开始的虚拟数据替换。结果，试听数据中的伪数据的头位置逐帧变化，从而可以提高试听数据的安全性。

8. 发明授权

US07140037B2 Signal reproducing apparatus and method, signal recording apparatus and method, signal receiver, and information processing method 有权
标题翻译：信号再现装置和方法，信号记录装置和方法，信号接收机和信息处理方法
公开(公告)号：US07140037B2
公开(公告)日：2006-11-21
申请号：US10240734
申请日：2002-02-08
申请人： Kyoya Tsutsui , Tadao Yoshida , Kenzo Akagiri , Naoya Haneda
发明人： Kyoya Tsutsui , Tadao Yoshida , Kenzo Akagiri , Naoya Haneda
IPC分类号： G06F7/04 , G09C3/00 , H03M7/00
CPC分类号： G11B20/00007 , G06Q20/12 , G06Q20/123 , G06Q20/1235 , G06Q30/06 , G07F17/0014 , G11B20/00086 , G11B20/00123 , G11B20/00224 , G11B20/0071 , G11B20/00818 , G11B20/00978 , G11B20/10527 , G11B27/034 , G11B27/105 , G11B27/3063 , G11B2220/20 , G11B2220/216 , G11B2220/2525 , G11B2220/2545 , G11B2220/41 , H04N21/234345 , H04N21/234354 , H04N21/23476 , H04N21/4621 , H04N21/4627 , H04N21/47211 , H04N21/8113 , H04N21/8549
摘要： A signal (801) of a first code string made through replacing a part of a code string of a predetermined format with dummy data is sent to code string rewriting means (1802) via code string resolution means (1801). A signal (806) of a second code string for complementing the dummy data part in the signal (801) is sent to the code string rewriting means (1802) via control means (1805) and the dummy data in the first code string is rewritten to the second code string. At the time of trial viewing/listening, a signal (802) from the code string resolution means (1801) is selected by a switch (1808), and when the second code string (806) is acquired through content purchase, a signal (803) from the code string rewriting means (1802) is selected by the switch (1808). Thus, trial viewing/listening of a content such as music is made possible while the possibility of decryption is eliminated. By acquiring a relatively small quantity of data, reproduction of a high-quality content is made possible.
摘要翻译：通过用伪数据替换预定格式的代码串的一部分而形成的第一代码串的信号（801）经由代码串解析装置（1801）被发送到代码串重写装置（1802）。用于补充信号（801）中的伪数据部分的第二代码串的信号（806）经由控制装置（1805）被发送到代码串重写装置（1802），并且第一代码串中的伪数据被重写到第二个代码字符串。在试用观看/收听时，通过开关（1808）选择来自码串解析装置（1801）的信号（802），并且当通过内容购买获取第二代码串（806）时，信号（ 803）从开关（1808）选择代码串重写装置（1802）。因此，可以在消除解密的可能性的同时，使诸如音乐的内容的试听/收听成为可能。通过获取相对少量的数据，可以实现高质量内容的再现。

9. 发明授权

US5490170A Coding apparatus for digital signal 失效
标题翻译：数字信号编码装置
公开(公告)号：US5490170A
公开(公告)日：1996-02-06
申请号：US159122
申请日：1993-11-30
申请人： Kenzo Akagiri , Kyoya Tsutsui
发明人： Kenzo Akagiri , Kyoya Tsutsui
IPC分类号： G10L19/002 , G10L19/02 , G10L19/022 , H04B1/66 , H04B14/04
CPC分类号： G10L19/0208 , G10L19/002 , G10L19/0204 , G10L19/022 , H04B1/665
摘要： In a coding apparatus for a digital signal adapted for implementing, every variable length block, floating processing to an input digital signal by using a block floating processing circuit thereafter to orthogonally transform signal components which have undergone such processing by using orthogonal transform circuits (e.g., DCT circuits), the block floating processing circuit is constructed so as to determine the length of a variable length block and a floating coefficient of the block floating processing on the basis of the same index, e.g., a maximum absolute value in that block. Thus, a quantity subject to processing can be reduced. In addition, there may be employed such a configuration to divide, every critical bands, spectrum signals on the frequency base from DCT (Discrete Cosine Transform) circuits to determine, every respective critical bands, allowed noises in which the masking is taken into consideration to compare these allowed noises and a minimum audible curve from a minimum audible curve generator at a comparator. When the minimum audible curve is grater than an allowed noise at that time, this minimum audible curve is considered as an allowed noise to divide the critical band into smaller bands to carry out bit allocation every respective smaller bands, and to rase or set a flag. Thus, an accurate allowed noise level can be provided without increasing auxiliary information.
摘要翻译：在适于实现每个可变长度块的数字信号的编码装置中，通过使用块浮动处理电路对输入数字信号进行浮动处理，此后通过使用正交变换电路（例如，等等）对经过这种处理的信号分量进行正交变换， DCT电路），块浮动处理电路被构造成基于相同索引（例如，该块中的最大绝对值）确定可变长度块的长度和块浮动处理的浮动系数。因此，可以减少处理量。此外，可以采用这样的配置来从DCT（离散余弦变换）电路在频域上划分每个临界频带的频谱信号，以确定每个相应临界频带允许的噪声，其中考虑掩蔽比较这些允许的噪声和比较器中最小可听曲线发生器的最小可听曲线。当最小可听曲线比当时允许的噪声更大时，该最小可听曲线被认为是允许的噪声，以将临界频带划分成更小的频带，以对每个较小的频带进行位分配，并且设定一个标志。因此，可以提供准确的允许噪声水平而不增加辅助信息。

10. 发明授权

US07218251B2 Signal reproducing method and device, signal recording method and device, and code sequence generating method and device 失效
公开(公告)号：US07218251B2
公开(公告)日：2007-05-15
申请号：US10384137
申请日：2003-03-07
申请人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
发明人： Kyoya Tsutsui , Naoya Haneda , Kenzo Akagiri
IPC分类号： H03M7/00
CPC分类号： G11B20/00086 , G11B2220/2562
摘要： It is intended to remove a risk of illegal high quality restoration while enabling trial viewing of contents such as music, to make it possible to reproduce contents with high quality by acquiring a relatively small amount of data, and to make it possible to implement hardware at a lower cost. To generate trial listening data containing dummy data, a pseudo random number R is generated first. A remainder r of R divided by 128 is calculated. The remainder r is coded and incorporated into high sound quality restoration data. A bandwidth limitation region of trial listening data is replaced by dummy data starting from its rth bit. As a result, the head position of the dummy data in the trial listening data varies frame by frame, whereby the safety of the trial listening data can be increased.

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