公开(公告)号：US4099029A

公开(公告)日：1978-07-04

申请号：US760790

申请日：1977-01-19

申请人： Rikio Maruta ,  Yasuo Itoh ,  Atsushi Tomozawa

发明人： Rikio Maruta ,  Yasuo Itoh ,  Atsushi Tomozawa

IPC分类号： H04J3/02 ,  H04J3/17 ,  H04J6/02

CPC分类号： H04J3/02 ,  H04J3/17

摘要： An asynchronous PCM common decoding apparatus decodes asynchronous PCM signals sent from a plurality of transmitter sources. The apparatus includes a plurality of receiver units each of which generate a digital signal to be decoded, a channel-number-designating signal, and a decode-requesting signal. One or more decoders are provided to decode the digital signals from the receiver units to analog signals. The decoders produce status signals indicating availabilities of the decoders for decoding the digital signals. A common control unit is responsive to both the decode-requesting signals and the status signals to successively allot a combination of a given receiver and a given decoder.

公开(公告)号：US6011287A

公开(公告)日：2000-01-04

申请号：US31681

申请日：1998-02-27

申请人： Yasuo Itoh ,  Koji Sakui

发明人： Yasuo Itoh ,  Koji Sakui

IPC分类号： G11C16/04 ,  H01L27/115 ,  H01L29/72

CPC分类号： H01L27/115 ,  G11C16/0483

摘要： In a NAND EEPROM using the local self-boosting system, an intermediate voltage which allows a memory cell adjacent to a selected memory cell to be turned on is applied to the control gate of the adjacent memory cell. As a result, even if the adjacent memory cell is in a normally-off state, the potential of a bit line can be transmitted to the adjacent memory cell. Thus, the reliability of the write inhibition in a non-selected NAND memory cell column is improved, while data can be written at random into a plurality of memory cells in a selected NAND memory cell column. When data is to be erased, an absolute value of an erasing voltage applied to a control gate can be less. As a result, data can be erased by a lower erasure voltage than that required in the conventional art. Consequently, the element refinement, the reliability and the yield can be further improved.

公开(公告)号：US5898335A

公开(公告)日：1999-04-27

申请号：US754795

申请日：1996-11-21

申请人： Junichi Miyamoto ,  Shigeru Atsumi ,  Yasuo Itoh

发明人： Junichi Miyamoto ,  Shigeru Atsumi ,  Yasuo Itoh

IPC分类号： G11C17/00 ,  G05F3/24 ,  G11C5/14 ,  G11C16/06 ,  H02M3/07 ,  G05F3/02

CPC分类号： G05F3/242 ,  G11C5/145 ,  H02M3/073

摘要： A high voltage generator circuit comprises a boosting circuit, limiter circuit, and a bypass circuit. When a supply voltage is inputted into the boosting circuit, a high voltage is generated and supplied to the limiter circuit. When the high voltage generated by the boosting circuit exceeds a limit voltage of the limiter circuit, the limiter circuit operates and the output voltage of the boosting circuit is thus maintained at a constant value. When the output voltage exceeds the limit voltage of the limiter circuit and an output current of the boosting circuit exceeds a reference value, a portion of the output current of the boosting circuit equivalent to a difference between the output current and a predetermined value is bypassed and discharged by the bypass circuit stated above.

摘要翻译： 高压发生器电路包括升压电路，限幅电路和旁路电路。 当电源电压输入到升压电路时，产生高电压并提供给限幅器电路。 当升压电路产生的高电压超过限制电路的限制电压时，限制电路工作，升压电路的输出电压因此维持在恒定值。 当输出电压超过限制电路的限制电压并且升压电路的输出电流超过参考值时，旁路与升压电路的输出电流的一部分相当于输出电流与预定值之间的差值， 由上述旁路电路放电。

公开(公告)号：US5103895A

公开(公告)日：1992-04-14

申请号：US554190

申请日：1990-07-17

申请人： Takashi Furuya ,  Hidemaro Takeuchi ,  Akio Kasama ,  Yasuo Itoh ,  Motoya Fujii ,  Hideki Oka ,  Shogo Matsumura ,  Kunimasa Sasaki ,  Keiichi Yamamoto

发明人： Takashi Furuya ,  Hidemaro Takeuchi ,  Akio Kasama ,  Yasuo Itoh ,  Motoya Fujii ,  Hideki Oka ,  Shogo Matsumura ,  Kunimasa Sasaki ,  Keiichi Yamamoto

IPC分类号： B22D11/06

CPC分类号： B22D11/0651 ,  B22D11/064 ,  B22D11/0697

摘要： Molten metal is supplied to a pouring basin formed between cooling members, such as movable cooling drums. A closed space is formed at a meniscus area whereat any one of the cooling members starts to come into contact with the molten metal, and a soluble gas or a mixture of soluble and insoluble gases is supplied to and filled in the closed space, thereby covering the meniscus area with the gas or the mixture. This arrangement enables a continuous casting of a thin metal sheet without surface cracks and having excellent surface characteristics.

摘要翻译： 将熔融金属供应到形成在诸如可移动冷却鼓之类的冷却构件之间的倾倒盆中。 在弯液面区域处形成封闭空间，其中任何一个冷却构件开始与熔融金属接触，并且将可溶性气体或可溶性和不溶性气体的混合物供给并填充在封闭空间中，从而覆盖 弯液面与气体或混合物。 这种布置使得能够连续铸造薄金属片而没有表面裂纹并且具有优异的表面特性。

公开(公告)号：US4638458A

公开(公告)日：1987-01-20

申请号：US715360

申请日：1985-03-25

申请人： Yasuo Itoh

发明人： Yasuo Itoh

IPC分类号： G11C11/401 ,  G11C11/40 ,  H01L21/3205 ,  H01L21/8242 ,  H01L23/52 ,  H01L23/528 ,  H01L27/10 ,  H01L27/108 ,  G11C5/10

CPC分类号： H01L23/5283 ,  H01L27/10805 ,  H01L2924/0002

摘要： According to a memory of the invention which can read/write data, word lines are connected to memory cells arranged on a semiconductor substrate. Each word line has a double layered structure comprising first and second conductive lines. An insulative layer is sandwiched between the conductive lines. Since the insulative layer has a plurality of contact holes formed along the extended direction of the first and second lines and spaced by an irregular pitch, the stacked lines are discontinuously and electrically connected to each other through these contact holes.

摘要翻译： 根据可读/写数据的本发明的存储器，字线连接到布置在半导体衬底上的存储单元。 每个字线具有包括第一和第二导线的双层结构。 绝缘层夹在导线之间。 由于绝缘层具有沿着第一和第二线的延伸方向形成并且间隔不规则间距的多个接触孔，所以堆叠的线通过这些接触孔不连续地电连接。

公开(公告)号：US4591670A

公开(公告)日：1986-05-27

申请号：US532628

申请日：1983-09-15

申请人： Yasuo Itoh

发明人： Yasuo Itoh

IPC分类号： H04B3/20 ,  H04B3/23 ,  H04M1/60 ,  H04M9/00

CPC分类号： H04B3/20

摘要： An echo cancelling circuit is composed of digital circuits. An echo canceller is supplied with lower send-in and receive-in components derived from a send-in and a receive-in digital signal, respectively, in a lower frequency band below a predetermined frequency. The echo canceller produces a lower digital signal component which is free from a lower echo signal component. The echo canceller furthermore produces a control signal indicative of presence and absence of a lower voice signal component in the lower send-in component. Controlled by the control signal and supplied with a higher send-in component of a frequency band higher than the predetermined frequency, an adjustable attenuator produces a higher digital signal component in which a higher echo signal component is suppressed with no attenuation and either a constant or an adjustable positive attenuation given to the higher send-in component when the control signal indicates presence and absence of the lower voice signal component, respectively. The lower and the higher digital signal components are combined into a send-out signal exempted from the echo signal, which may or may not comprise a reverberation signal introduced into the send-in digital signal by audible sound reproduced from a voice signal carried by the receive-in digital signal.

摘要翻译： 回波消除电路由数字电路组成。 在低于预定频率的较低频带中，回波消除器分别被提供有从发送和接收数字信号导出的较低的发送和接收分量。 回波消除器产生较低的数字信号分量，其没有较低的回波信号分量。 回波消除器进一步产生指示下部发送单元中存在和不存在较低语音信号分量的控制信号。 由控制信号控制并提供高于预定频率的频带的更高的发送分量，可调衰减器产生较高的数字信号分量，其中较高的回波信号分量被抑制而无衰减，或者是常数或 当控制信号分别指示存在和不存在较低语音信号分量时，给予较高发送分量的可调节的正衰减。 较低和较高的数字信号分量被组合成从回波信号中免除的发送信号，其可以或可以不包括通过从由所接收的语音信号携带的语音信号再现的可听声音引入到接收数字信号中的混响信号 接收数字信号。

公开(公告)号：US4079330A

公开(公告)日：1978-03-14

申请号：US746336

申请日：1976-12-01

申请人： Yukinobu Ishigaki ,  Kohei Sasamura ,  Yasuo Itoh ,  Teruo Muraoka

发明人： Yukinobu Ishigaki ,  Kohei Sasamura ,  Yasuo Itoh ,  Teruo Muraoka

IPC分类号： G11B3/00 ,  H03D3/00 ,  H03D3/02 ,  H03D3/06 ,  H03D3/24 ,  H03D3/26 ,  H04H20/89 ,  H04S3/00 ,  H03D3/22

CPC分类号： H04H20/88 ,  H03D3/005 ,  H03D3/02 ,  H03D3/06 ,  H03D3/24 ,  H03D3/26 ,  H04H20/89

摘要： The inventive system demodulates angle-modulated signals. A tracking band-pass filter responds to an input angle-modulated wave signal. The tracking filter has a pass band with a center frequency controlled by a control signal. A first amplitude limiter limits the amplitude of the input angle-modulated wave signal. A differentiation circuit establishes a 90.degree. phase difference between a signal passing through the tracking band-pass filter and a signal passing through the amplitude limiter. A phase comparator responds to an input with the two signals with a 90.degree. phase difference therebetween and produces an output error signal in accordance with this phase difference. This output error signal is supplied as the control signal to the tracking band-pass filter. This output error signal is also passed through a low pass filter to produce the demodulated signal.

摘要翻译： 本发明的系统解调角度调制信号。 跟踪带通滤波器响应输入角度调制波信号。 跟踪滤波器具有通过控制信号控制的中心频率的通带。 第一幅度限制器限制输入角度调制波信号的幅度。 差分电路在通过跟踪带通滤波器的信号和通过幅度限制器的信号之间建立90°的相位差。 相位比较器响应输入，其中两个信号之间的相位差为90°，并根据该相位差产生输出误差信号。 该输出误差信号作为控制信号提供给跟踪带通滤波器。 该输出误差信号也通过低通滤波器以产生解调信号。

公开(公告)号：US4030533A

公开(公告)日：1977-06-21

申请号：US686362

申请日：1976-05-14

申请人： Yasuo Itoh ,  Yoshitake Suzuki ,  Hirohiko Shibutami ,  Koichi Hirano ,  Muneo Tagami

发明人： Yasuo Itoh ,  Yoshitake Suzuki ,  Hirohiko Shibutami ,  Koichi Hirano ,  Muneo Tagami

IPC分类号： B22D11/12 ,  B22D11/16 ,  B22D11/10

CPC分类号： B22D11/16 ,  B22D11/12 ,  B22D11/122

摘要： A continuous casting system provides with a foreign matter receiving gutter between two adjacent rolls to receive foreign matters dropping during the drawing operation of castings, and a foreign matter removing nozzle to wash away the foreign matter dropped on the gutter. An electromagnetic agitator of the continuous casting system is provided with a proximity switch at least at its inlet side to sense a magnetic substance approaching the agitator thereby to control the operation of the agitator, thus eliminating troubles caused by the vibration of the magnetic substance.

摘要翻译： 连续铸造系统在两个相邻的辊之间提供接收沟槽的异物，以在铸件的拉制操作期间接收异物掉落，以及异物去除喷嘴，以清除掉在沟槽上的异物。 连续铸造系统的电磁搅拌器至少在其入口侧设置有接近开关，以感测接近搅拌器的磁性物质，从而控制搅拌器的操作，从而消除由磁性物质的振动引起的麻烦。

公开(公告)号：US3983500A

公开(公告)日：1976-09-28

申请号：US502531

申请日：1974-09-03

申请人： Nobuaki Takahashi ,  Kazunori Nishikawa ,  Yoshiki Iwasaki ,  Masaaki Satoh ,  Katsuhiro Ohba ,  Shinji Nakamura ,  Tatsuo Sawada ,  Nobuhide Ohsaki ,  Yasuo Itoh ,  Nobuaki Suda ,  Yasuhisa Okabe ,  Hideaki Ozaki

发明人： Nobuaki Takahashi ,  Kazunori Nishikawa ,  Yoshiki Iwasaki ,  Masaaki Satoh ,  Katsuhiro Ohba ,  Shinji Nakamura ,  Tatsuo Sawada ,  Nobuhide Ohsaki ,  Yasuo Itoh ,  Nobuaki Suda ,  Yasuhisa Okabe ,  Hideaki Ozaki

IPC分类号： G11B20/00 ,  G11B23/00 ,  H03D3/24 ,  H04S3/00 ,  G11B3/04 ,  G11B3/74 ,  H03D3/00

CPC分类号： H03D3/244 ,  G11B20/00992 ,  G11B23/0007 ,  H04S3/006

摘要： An angle modulated wave demodulation system demodulates an input angle modulated wave by means of a phase locked loop system which comprises a phase comparator, which is operated responsive to an input angle modulated wave. A voltage controlled oscillator is supplied with a part of the output of the phase comparator which controls its oscillation frequency. The oscillator supplies its oscillation frequency to the phase comparator. The phase locked loop system has a lock frequency range which decreases its width when the level of the input angle modulated wave is below a predetermined level. The portion of this lock range in which the width of the lock range decreases is positively utilized. The voltage controlled oscillator oscillates at a frequency equal to the center frequency of the carrier of the input angle modulated wave, when the phase locked loop becomes unlocked.

公开(公告)号：US3940698A

公开(公告)日：1976-02-24

申请号：US361218

申请日：1973-05-17

申请人： Yasuo Itoh

发明人： Yasuo Itoh

IPC分类号： H03D3/04 ,  H03D5/00 ,  H03G3/34 ,  H04B1/10 ,  H04S3/00

CPC分类号： H03D5/00 ,  H03D3/04 ,  H03G3/34 ,  H04S3/006

摘要： A muting circuit comprises, substantially, a gate circuit for passing or not passing input signals and a circuit for forming a control signal for controlling the gating operation of the gate circuit. The control signal forming circuit has a circuit for detecting the level of a carrier wave in the input signal. A first time constant circuit has a very small time constant .tau..sub.1. A second time constant circuit exhibits a delay time constant of .tau..sub.2 (where .tau..sub.2 >>.tau..sub.1) when a carrier wave component exists in the input and a delay time constant which becomes substantially zero when a carrier wave component does not exist. A third time constant circuit of a time constant .tau..sub.3 (where .tau..sub.3 >.tau..sub.2) is with a 180.degree. phase relationship relative to the second time constant circuit.

摘要翻译： 静音电路基本上包括用于通过或不通过输入信号的门电路和用于形成用于控制门电路的选通操作的控制信号的电路。 控制信号形成电路具有用于检测输入信号中载波电平的电路。 第一时间常数电路具有非常小的时间常数τ1。当输入中存在载波分量时，第二时间常数电路表现出τ2的延迟时间常数（其中τ2 >>τ1）和延迟时间常数 当不存在载波分量时，其变为基本为零。 时间常数τ3（其中tau 3> tau 2）的第三次恒定电路相对于第二时间常数电路具有180°的相位关系。