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1. 发明授权

US5627535A Quantization apparatus 失效
标题翻译：量化装置
公开(公告)号：US5627535A
公开(公告)日：1997-05-06
申请号：US302539
申请日：1994-09-08
申请人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata
发明人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata
IPC分类号： H04S1/00 , H03M1/20
CPC分类号： H04S1/007
摘要： A quantization apparatus for quantizing and word length limiting digitized stereo input signals including a stereo dither signal generating unit for generating stereo dither signals synthesized from at least two distinct dither signals not correlated to each other at an arbitrary ratio, a first addition unit for adding one of the stereo dither signals to one of the digital stereo input signals, a second addition unit for adding the other of the stereo dither signals to the other of the digital stereo input signals, a first quantization unit for quantizing and word length limiting an output signal of the first addition unit, and a second quantization unit for quantizing and word length limiting an output signal of the second addition unit. With the present quantization device, the stereo input signals may be quantized while cross-correlation between the left and right channel stereo input signals is maintained.
摘要翻译：一种用于量化和字长限制数字化立体声输入信号的量化装置，包括立体声抖动信号产生单元，用于产生从任意比例彼此不相关的至少两个不同的抖动信号合成的立体声抖动信号;第一加法单元，所述立体声抖动信号输出到所述数字立体声输入信号之一，第二加法单元，用于将所述立体声抖动信号中的另一个添加到所述数字立体声输入信号中的另一个;第一量化单元，用于量化和限制输出信号的字长度以及用于对第二加法单元的输出信号进行量化和字长限制的第二量化单元。利用本量化装置，可以在保持左和右声道立体声输入信号之间的互相关的同时量化立体声输入信号。

2. 发明授权

US06839857B2 Interrupt controller in an interface device or information processing system 有权
标题翻译：接口设备或信息处理系统中的中断控制器
公开(公告)号：US06839857B2
公开(公告)日：2005-01-04
申请号：US09758108
申请日：2001-01-10
申请人： Yuichi Inomata , Yasuyuki Yamamoto
发明人： Yuichi Inomata , Yasuyuki Yamamoto
IPC分类号： G06K17/00 , G06F3/06 , G06F13/24 , G06F13/42 , G06F1/12 , H04L5/00
CPC分类号： G06F13/24
摘要： There is disclosed an interface device which can prevent the freezing of an information processing system caused occupation of a system bus even when a wait signal outputted from the PC card is kept asserted. When the wait signal outputted from the PC card, is asserted, a timer portion 201 is activated. When the timer portion 201 detects that the wait signal is kept asserted for more than a predetermined period of time, it asserts a wait mask signal. Upon assertion of the wait mask signal, a mask portion 202 masks the wait signal from the PC card so that the wait signal to the CPU is negated even when the wait signal is kept asserted. Further, when the timer portion 201 asserts the wait mask signal, an interrupt control block/card status register 210 asserts an interrupt signal to the CPU.
摘要翻译：公开了一种接口装置，即使当从PC卡输出的等待信号被保持断言时，也可以防止引起系统总线占用的信息处理系统的冻结。当从PC卡输出的等待信号被断言时，定时器部分201被激活。当定时器部分201检测到等待信号被保持超过预定时间段时，它断言等待掩码信号。在等待掩码信号被置位时，掩码部分202屏蔽来自PC卡的等待信号，使得即使当等待信号被保持断言时，到CPU的等待信号被否定。此外，当定时器部分201断言等待屏蔽信号时，中断控制块/卡状态寄存器210向CPU发出中断信号。

3. 发明授权

US6166873A Audio signal transmitting apparatus and the method thereof 有权
标题翻译：音频信号发送装置及其方法
公开(公告)号：US6166873A
公开(公告)日：2000-12-26
申请号：US329105
申请日：1999-06-09
申请人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata , Masaaki Ueki , Makoto Yamada
发明人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata , Masaaki Ueki , Makoto Yamada
IPC分类号： G11B20/10 , H03M3/04 , H03M7/38 , H04B14/04 , G11B5/035 , H04B1/10
CPC分类号： H03M7/3006 , G11B20/10527 , H03M7/3026 , H03M7/3042 , H04B14/046
摘要： A recording and/or reproducing apparatus for recording and/or reproducing digital audio signal on a recording medium such as a magnetic tape, which includes a recording and/or reproducing unit, an analog-to-digital convertor, a decimation filter, and noise shaper. The recording and/or reproducing unit records and/or reproduces signal on a recording medium at a speed double relative moving speed of a head and the recording medium at least. The analog-to-digital convertor converts input analog audio signal into digital signal with a sampling frequency which is above the audio frequency band, and sufficiently higher than the maximum frequency capable of recording by the recording and/or reproducing unit. The decimation filter reduces the sampling frequency of the digital signal output from the analog-to-digital convertor, and converts it into digital signal of m-bit (m>n). The noise shaper converts the digital signal from the decimation filter from m-bit to n-bit, and then in requantizing, shapes noise so as to suppress within the audio frequency band, and supplies it to the recording and/or reproducing unit.
摘要翻译：一种用于在诸如磁带的记录介质上记录和/或再现数字音频信号的记录和/或再现装置，其包括记录和/或再现单元，模数转换器，抽取滤波器和噪声整形器记录和/或再现单元以至少头部和记录介质的速度双倍相对移动速度在记录介质上记录和/或再现信号。模数转换器将输入模拟音频信号转换成具有高于音频频带的采样频率的数字信号，并且足够高于能够由记录和/或再现单元记录的最大频率。抽取滤波器降低了从模数转换器输出的数字信号的采样频率，并将其转换为m位（m> n）的数字信号。噪声整形器将来自抽取滤波器的数字信号从m位转换为n位，然后重新量化噪声，以便在音频频带内抑制，并将其提供给记录和/或再现单元。

4. 发明授权

US06823420B2 Entertainment apparatus 有权
标题翻译：娱乐设备
公开(公告)号：US06823420B2
公开(公告)日：2004-11-23
申请号：US09798695
申请日：2001-03-02
申请人： Hideaki Io , Yasuyuki Yamamoto , Yuichi Inomata , Shinichi Fukushima , Shigekazu Hayashi
发明人： Hideaki Io , Yasuyuki Yamamoto , Yuichi Inomata , Shinichi Fukushima , Shigekazu Hayashi
IPC分类号： G06F1336
CPC分类号： G06F13/28 , G06F2213/0056
摘要： An entertainment apparatus comprising a peripheral device and a controller for controlling the peripheral device. The peripheral device and the controller are connected each other by an address bus and a data bus. The peripheral device which receives a DMA acknowledge signal from the controller carries out 32-bit DMA transfer using lower 16 bits of the address bus and the data bus, during assertion of the DMA acknowledge signal.
摘要翻译：一种娱乐装置，包括外围设备和用于控制外围设备的控制器。外围设备和控制器通过地址总线和数据总线相互连接。在确认DMA确认信号期间，从控制器接收DMA确认信号的外围设备使用地址总线和数据总线的低16位执行32位DMA传输。

5. 发明授权

US5999347A Method and apparatus for higher resolution audio signal transmitting 失效
标题翻译：用于更高分辨率音频信号传输的方法和装置
公开(公告)号：US5999347A
公开(公告)日：1999-12-07
申请号：US835286
申请日：1997-04-09
申请人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata , Masaaki Ueki , Makoto Yamada
发明人： Gen Ichimura , Masayoshi Noguchi , Yuichi Inomata , Masaaki Ueki , Makoto Yamada
IPC分类号： G11B20/10 , H03M3/04 , H03M7/38 , H04B14/04 , G11B5/00 , G11B5/035
CPC分类号： H03M7/3006 , G11B20/10527 , H04B14/046 , H03M7/3026 , H03M7/3042
摘要： A recording and/or reproducing apparatus for recording and/or reproducing digital audio signal on a recording medium such as a magnetic tape, which includes a recording and/or reproducing unit, an analog-to-digital convertor, a decimation filter, and noise shaper. The recording and/or reproducing unit records and/or reproduces signal on a recording medium at a speed double relative moving speed of a head and the recording medium at least. The analog-to-digital convertor converts input analog audio signal into digital signal with a sampling frequency which is above the audio frequency band, and sufficiently higher than the maximum frequency capable of recording by the recording and/or reproducing unit. The decimation filter reduces the sampling frequency of the digital signal output from the analog-to-digital convertor, and converts it into digital signal of m-bit (m>n). The noise shaper converts the digital signal from the decimation filter from m-bit to n-bit, and then in requantizing, shapes noise so as to suppress within the audio frequency band, and supplies it to the recording and/or reproducing unit.
摘要翻译：一种用于在诸如磁带的记录介质上记录和/或再现数字音频信号的记录和/或再现装置，其包括记录和/或再现单元，模数转换器，抽取滤波器和噪声整形器记录和/或再现单元以至少头部和记录介质的速度双倍相对移动速度在记录介质上记录和/或再现信号。模数转换器将输入模拟音频信号转换成具有高于音频频带的采样频率的数字信号，并且足够高于能够由记录和/或再现单元记录的最大频率。抽取滤波器降低了从模数转换器输出的数字信号的采样频率，并将其转换为m位（m> n）的数字信号。噪声整形器将来自抽取滤波器的数字信号从m位转换为n位，然后重新量化噪声，以便在音频频带内抑制，并将其提供给记录和/或再现单元。

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