专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明授权

US3991283A Multichannel record disc reproducing system 失效
标题翻译：多通道记录盘再现系统
公开(公告)号：US3991283A
公开(公告)日：1976-11-09
申请号：US612640
申请日：1975-09-12
申请人： Yasuo Itoh , Nobuaki Takahashi , Masao Kasuga
发明人： Yasuo Itoh , Nobuaki Takahashi , Masao Kasuga
IPC分类号： G11B23/00 , H03G5/18 , H03G7/00 , G11B3/00 , G11B3/74
CPC分类号： G11B23/0007 , H03G5/18 , H03G7/00
摘要： A multichannel record disc reproducing system comprises a circuit for demodulating an angle-modulated wave picked up from a multichannel record disc. A circuit detects abnormal phenomena of the angle-modulated wave, whereupon an expansion circuit accomplishes a variable control operation. A middle frequency band and/or a high frequency band component of the demodulated signal is attenuated in accordance with the level thereof. A circuit is operated in response to the output of the detection circuit to stop a variable expansion control operation of the expansion circuit and imparts a specific attenuation characteristic to a signal passing through the expansion circuit.
摘要翻译：多声道记录盘重放系统包括用于解调从多声道记录盘拾取的角度调制波的电路。电路检测角度调制波的异常现象，由此扩展电路实现可变控制操作。解调信号的中频带和/或高频带分量根据其电平被衰减。响应于检测电路的输出来操作电路以停止扩展电路的可变扩展控制操作，并且对通过扩展电路的信号赋予特定的衰减特性。

82. 发明授权

US3987841A Continuous casting system 失效
标题翻译：连续铸造系统
公开(公告)号：US3987841A
公开(公告)日：1976-10-26
申请号：US588698
申请日：1975-06-20
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： B01F13/08 , B22D11/10 , B22D11/115 , B22D11/12 , B22D11/16 , B22D27/02 , B22C15/22
CPC分类号： B22D11/12 , B22D11/122 , B22D11/16
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.

83. 发明授权

US3934087A Angle modulated wave demodulation system 失效
标题翻译：角度调制波解调系统
公开(公告)号：US3934087A
公开(公告)日：1976-01-20
申请号：US403635
申请日：1973-10-04
申请人： Nobuaki Takahashi , Yoshiki Iwasaki , Masao Kasuga , Yasuo Itoh
发明人： Nobuaki Takahashi , Yoshiki Iwasaki , Masao Kasuga , Yasuo Itoh
IPC分类号： H03D3/24 , H04S3/00 , G11B3/04
CPC分类号： H04S3/006 , H03D3/244
摘要： A system for demodulating angle modulated waves comprises a phase locked loop including a phase comparator and a voltage controlled oscillator. An attenuation means is inserted into the phase locked loop. This attenuation means does not affect the DC component of an input angle modulated wave, but does cause an attenuation with respect to an AC component, to cause a decrease in the loop gain. The phase locked loop has a DC lock range exhibiting a relatively wide lock range width even when the input level is relatively low and an AC lock range produced by the attenuation circuit and exhibiting a relatively narrow lock range width when the input level is relatively low. The attenuation means detects an abnormality in the angle modulated wave, the harmonics component of the direct wave, and the like. A variable attenuation circuit controlled by the output of the detecting means is varied in its attenuation quantity.
摘要翻译：用于解调角度调制波的系统包括包括相位比较器和压控振荡器的锁相环。衰减装置插入到锁相环中。该衰减装置不影响输入角调制波的直流分量，但是相对于AC分量产生衰减，导致环路增益的降低。即使当输入电平相对较低时，锁相环也具有相对宽的锁定范围宽度的DC锁定范围，并且当输入电平相对较低时，锁相环由衰减电路产生并产生相对窄的锁定范围宽度。衰减装置检测角度调制波的异常，直接波的谐波分量等。由检测装置的输出控制的可变衰减电路的衰减量变化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式