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1. 发明授权

US4995111A Ring trip circuit for subscriber telephone 失效
标题翻译：用户电话的环路跳闸电路
公开(公告)号：US4995111A
公开(公告)日：1991-02-19
申请号：US320297
申请日：1989-02-21
申请人： Toshiro Tojo , Kenji Takato , Kazumi Kinoshita , Yuzo Yamamoto , Yozo Iketani , Shin-ichi Ito
发明人： Toshiro Tojo , Kenji Takato , Kazumi Kinoshita , Yuzo Yamamoto , Yozo Iketani , Shin-ichi Ito
IPC分类号： H04M19/02
CPC分类号： H04M19/026
摘要： An improved ring trip circuit for a subscriber telephone, for detecting an on-hook state or an off-hook state of the telephone. The ring trip circuit can be formed in a small size and can be formed by a LSI. The ring trip circuit includes a voltage detecting circuit (2), for detecting a voltage difference (.DELTA.V) between both ends of a ringer sending resistor, having a first circuit (S1, S2, A1.about.B3) converting the voltage difference to a current difference, and further having a second circuit (F) converting the current difference to a voltage, the voltage difference varying in response to the on-hook state or the off-hook state of the telephone, and a state detecting circuit (3) for detecting the on-hook state or the off-hook state in response to a value of the voltage from the voltage detecting circuit. The voltage detecting circuit is formed by a plurality of current mirror circuits, each of which includes at least two transistors. The state detecting circuit includes a comparator circuit (CP1) formed by a plurality of transistors.
摘要翻译： PCT No.PCT / JP88 / 00607 Sec。 371日期1989年2月21日 102（e）日期1989年2月21日PCT Filed 1988年6月18日PCT Pub。出版物WO88 / 10542 日期为1988年12月29日。一种用于用户电话的改进的环路跳闸电路，用于检测电话的挂机状态或摘机状态。环形跳闸电路可以形成为小尺寸并且可以由LSI形成。环路跳闸电路包括电压检测电路（2），用于检测振铃发送电阻器两端之间的电压差（DELTA V），该电路具有将电压差转换为a的第一电路（S1，S2，A1差分B3）并且还具有将电流差转换为电压的第二电路（F），所述电压差响应于电话的挂机状态或摘机状态而变化，以及状态检测电路（3）用于响应于来自电压检测电路的电压的值来检测挂机状态或摘机状态。电压检测电路由多个电流镜电路形成，每个电流镜电路包括至少两个晶体管。状态检测电路包括由多个晶体管形成的比较器电路（CP1）。

2. 发明授权

US4862309A Protection circuit for battery feed circuit 失效
标题翻译：电池供电电路保护电路
公开(公告)号：US4862309A
公开(公告)日：1989-08-29
申请号：US207635
申请日：1988-06-16
申请人： Toshiro Tojo , Kenji Takato , Kazumi Kinoshita , Yuzo Yamamoto
发明人： Toshiro Tojo , Kenji Takato , Kazumi Kinoshita , Yuzo Yamamoto
IPC分类号： H02H9/02 , H04M3/18 , H04M19/00
CPC分类号： H04M3/18 , H02H9/025 , H04M19/001
摘要： A protection circuit for a battery feed circuit used in a switching system. The protection circuit is comprised of: a supervising circuit for detecting an abnormal current flowing through a battery feed resistor; and a voltage limiting circuit for clamping a voltage across the battery feed resistor when the abnormal current is detected. Further, a control circuit is employed for stopping an operational amplifier, which is a component of a conventional battery feed circuit, when the abnormal current is detected.

3. 发明授权

US4827503A Integrated ringing circuit and a ring trip circuit for the same 失效
标题翻译：集成振铃电路和环路跳闸电路相同
公开(公告)号：US4827503A
公开(公告)日：1989-05-02
申请号：US110460
申请日：1987-10-20
申请人： Kenji Takato , Kazumi Kinoshita , Toshiro Tojo , Yuzo Yamamoto
发明人： Kenji Takato , Kazumi Kinoshita , Toshiro Tojo , Yuzo Yamamoto
IPC分类号： H04M19/02 , H04M1/66
CPC分类号： H04M19/026 , H04M19/023
摘要： A constant current circuit, including a constant current source which draws a current and a constant current source which sends a current, is connected to a two-wire subscriber line. A ringing signal made up of constant stream of positive and negative current signals is transmitted to the telephone line. The OFF-hook condition of a telephone set is detected by comparing the output voltage of a constant current circuit with a reference voltage for ring trip.
摘要翻译：一个恒流电路，包括一个电流源和一个恒定的电流源，它产生一个电流，连接到两线用户线。由正和负电流信号的恒定流组成的振铃信号被发送到电话线。通过将恒流电路的输出电压与环路跳闸的参考电压进行比较来检测电话机的摘机状态。

4. 发明授权

US4935960A Battery feed circuit 失效
标题翻译：电池供电电路
公开(公告)号：US4935960A
公开(公告)日：1990-06-19
申请号：US409701
申请日：1989-09-20
申请人： Kenji Takato , Toshiro Tojo , Kazumi Kinoshita , Yuzo Yamamoto
发明人： Kenji Takato , Toshiro Tojo , Kazumi Kinoshita , Yuzo Yamamoto
IPC分类号： H04M19/00
CPC分类号： H04M19/005
摘要： A battery feed circuit including a main battery feed part and its peripheral circuits provided in a line circuit of a switching system. The peripheral circuits include the following: First, a means for forming a low impedance with respect to in-phase signals, simply realized by a capacitor; second, a bias circuit able to suppress the entry of power source noise and easily switch magnitudes of bias voltages and polarities, realized by a bias voltage generating means, a buffer means, and and AC bypass capacitor; third, a battery feed current control circuit able to suppress overflow of battery feed current when the distance to the subscriber is short, which detects an overcurrent component above a predetermined value, and, in accordance with the same, changes the bias voltage; fourth, a battery feed current supervising circuit able to detect current in both the forward and reverse directions, realized by an emitter-follower pair and a voltage/current converting resistor; fifth, a circuit for detecting bidirectional battery feed currents at a high precision, which is formed by forward direction and reverse direction current detection means provided with V.sub.BE cancelling means; and sixth, an overcurrent protection circuit, which changes the voltage applied between the inputs (+,-) of a transconductance amplifier forming the main battery feed part in accordance with an excess voltage.

5. 发明授权

US4912429A Operational amplifier 失效
公开(公告)号：US4912429A
公开(公告)日：1990-03-27
申请号：US326177
申请日：1989-03-20
申请人： Kenji Takato , Toshiro Tojo , Kazumi Kinoshita , Yuzo Yamamoto
发明人： Kenji Takato , Toshiro Tojo , Kazumi Kinoshita , Yuzo Yamamoto
IPC分类号： H03F1/08 , H03F3/45
CPC分类号： H03F3/45085 , H03F1/083 , H03F2200/516 , H03F2203/45496 , H03F2203/45664 , H03F2203/45708
摘要： An operational amplifier for producing an output signal representing the voltage differential between two input signals is powered by first, second and third power sources respectively having high, intermediate and low output voltage levels. A voltage buffer circuit, which is connected to the second power source, interconnects a constant current source, which is connected to the first power source, and an amplifier means, which is connected to the third power source, and separates the constant current source from the third power source. A differential amplifier in the amplifier means responds to the two input signals for producing a voltage differential output signal, and an output circuit connected between the second and third power sources receives the voltage differential output signal of the differential amplifier for producing the voltage differential output signal of the operational amplifier.

6. 发明授权

US4982422A Terminating circuit in a battery feed circuit of an electronic exchange system 失效
标题翻译：电子交换系统的电池供电电路中的终端电路
公开(公告)号：US4982422A
公开(公告)日：1991-01-01
申请号：US409064
申请日：1989-09-19
申请人： Shin-ichi Itoh , Kenji Takato , Yozo Iketani , Yuzo Yamamoto
发明人： Shin-ichi Itoh , Kenji Takato , Yozo Iketani , Yuzo Yamamoto
IPC分类号： H04M19/00 , H04Q3/42
CPC分类号： H04M19/005
摘要： Disclosed is a terminating circuit in a battery feed circuit of an electronic exchange system. The battery feed circuit comprises two transconductance amplifiers connected by a coupling capacitor, for supplying a direct current through a ring terminal and a tip terminal to a load. Each of the transconductance amplifiers comprises an operational amplifier; a resistor connected between the output end of the operational amplifier and the tip terminal or the ring terminal, and an impedance unit connected between the inverting input terminal of the operational amplifier and the output end. The impedance unit has an impedance determined in such a way that the required terminating impedance of the battery feed circuit when viewed from the tip terminal and the ring terminal is formed only by the internal elements including the impedance means and the resistor, whereby an external larger-size capacitance capacitor for matching becomes unnecessary.

7. 发明授权

US5128992A Hybrid circuit 失效
标题翻译：混合电路
公开(公告)号：US5128992A
公开(公告)日：1992-07-07
申请号：US565050
申请日：1990-08-09
申请人： Kenji Takato , Toshiro Tojo , Yuzo Yamamoto
发明人： Kenji Takato , Toshiro Tojo , Yuzo Yamamoto
IPC分类号： H04B3/03 , H04M1/58 , H04M19/00
CPC分类号： H04M19/005
摘要： A hybrid circuit which converts receiving side four-wire signals from a switching network into two-wire signals, supplies the same through line B and line A to a telephone terminal equipment, and converts two-wire signals supplied from the telephone terminal equipment through the line A and the line B to the switching network into transmitting side four-wire signals, including a pair of battery feeding and terminating resistors connected between power sources (GND and V.sub.BB) and the line B and line A and a receiving side mirror circuit and transmitting side mirror circuit both connected between the lines B and A.

8. 发明申请

US20080090939A1 BIODEGRADABLE SOY PROTEIN-BASED COMPOSITIONS AND COMPOSITES FORMED THEREFROM 审中-公开
标题翻译：可生物降解的大豆蛋白质组合物及其形成的复合材料
公开(公告)号：US20080090939A1
公开(公告)日：2008-04-17
申请号：US11867959
申请日：2007-10-05
申请人： Anil Netravali , Xiaosong Huang , Preeti Lodha , Yuzo Yamamoto
发明人： Anil Netravali , Xiaosong Huang , Preeti Lodha , Yuzo Yamamoto
IPC分类号： C08H1/00
CPC分类号： C08L1/02 , C08L5/12 , C08L89/00 , C08L2666/26
摘要： A biodegradable polymeric composition includes 99.5 wt. % to 40 wt. % soy protein and 0.5 wt. % to 60 wt. % of a first strengthening agent that consists essentially of a polysaccharide selected from the group consisting of agar, gellan, and mixtures thereof. The composition is substantially completely soluble in water at a pH of about 7.0 or higher. A biodegradable composite includes a fiber mat and the described biodegradable polymeric composition. A biodegradable molded thermoset solid article is obtained by subjecting the described biodegradable polymeric composition to conditions of temperature and pressure effective to form the thermoset solid article.
摘要翻译：可生物降解的聚合物组合物包含99.5wt。％至40重量％％大豆蛋白和0.5wt。％至60重量％％的第一增强剂，其基本上由选自琼脂，结冷胶及其混合物的多糖组成。该组合物在约7.0或更高的pH下基本上完全溶于水。可生物降解的复合材料包括纤维垫和所述的可生物降解聚合物组合物。可生物降解的模制的热固性固体制品通过使所描述的可生物降解的聚合物组合物经受有效形成热固性固体制品的温度和压力条件而获得。

9. 发明申请

US20060264135A1 Cured soy protein with green strengthening additive and fabrication of such into green composite 有权
标题翻译：用绿色强化添加剂固化大豆蛋白，并将其制成绿色复合材料
公开(公告)号：US20060264135A1
公开(公告)日：2006-11-23
申请号：US11407329
申请日：2006-04-20
申请人： Anil Netravali , Xiaosong Huang , Preeti Lodha , Yuzo Yamamoto
发明人： Anil Netravali , Xiaosong Huang , Preeti Lodha , Yuzo Yamamoto
IPC分类号： B32B27/04
CPC分类号： B32B27/04 , C08L1/02 , C08L5/12 , C08L89/00 , Y10T428/31504 , Y10T428/31844 , Y10T428/31848 , Y10T428/31851 , Y10T442/2525 , C08L2666/26
摘要： Strengthened soy protein based biodegradable composition comprises plasticized or unplasticized cured soy protein strengthened with green strengthening agent. Green strengthening agents include nanoclay, microfibrillated cellulose, nanofibrillated cellulose, cured green polysaccharide and green fibers, filaments, yarns, and fabrics and combinations of these. These can be fabricated into composites.
摘要翻译：加强大豆蛋白质生物降解组合物包括用绿色增强剂增强的增塑或未增塑的固化大豆蛋白。绿色增强剂包括纳米粘土，微纤化纤维素，纳米纤维化纤维素，固化的绿色多糖和绿色纤维，长丝，纱线和织物以及它们的组合。这些可以制成复合材料。

10. 发明授权

US5158708A Conductive paste and conductive coating film 失效
标题翻译：导电胶和导电涂膜
公开(公告)号：US5158708A
公开(公告)日：1992-10-27
申请号：US618973
申请日：1990-11-28
申请人： Yuzo Yamamoto , Tomoyuki Haishi , Hiromitsu Hayashi , Masaki Iwasaki , Yumi Rakue
发明人： Yuzo Yamamoto , Tomoyuki Haishi , Hiromitsu Hayashi , Masaki Iwasaki , Yumi Rakue
IPC分类号： C08L25/18 , C08K3/08 , C08L25/00 , C09D125/18 , H01B1/20 , H05K1/09
CPC分类号： H05K1/095 , C08K3/08 , C09D125/18
摘要： An electrically conductive paste composition comprises an electric conductive powder, an organic binder comprising (A) a polyhydroxystyrene derivative and (B) a thermosetting resin at a weight ratio of (A) to (B) in the range between 5/95 and 95/5 and a solvent. The paste is used for an electric circuit printed on a substrate and improved in view of migration resistance, flexibility and reliability.

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