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1. 发明授权

US4489430A FM Stereo demodulation circuit 失效
标题翻译： FM立体声解调电路
公开(公告)号：US4489430A
公开(公告)日：1984-12-18
申请号：US408993
申请日：1982-08-17
申请人： Kohji Ishida , Tatsuo Numata , Tadashi Noguchi
发明人： Kohji Ishida , Tatsuo Numata , Tadashi Noguchi
IPC分类号： H03D1/22 , H03D3/04 , H04H1/00 , H04H40/45 , H04H40/72 , H04H5/00
CPC分类号： H04H40/72 , H03D1/2227 , H03D3/04
摘要： A pulse position modulated (PPM) signal is derived from an input FM signal, and first and second switching signals are derived which are opposite in phase and correspond to alternating half cycles of the PPM signal. First and second opposite phase subcarrier signals are derived synchronized to the pilot signal in the input FM signal, and various combinations of the switching and subcarrier signals are multiplied together and the multiplication products combined to obtain left and right channel outputs.
摘要翻译：从输入FM信号导出脉冲位置调制（PPM）信号，导出与相位相反并对应于PPM信号的交替半周期的第一和第二切换信号。导出与输入FM信号中的导频信号同步的第一和第二相反相位副载波信号，并将切换和副载波信号的各种组合相乘在一起，乘积合成以获得左右声道输出。

2. 发明授权

US4280101A Stereophonic signal demodulation circuit 失效
标题翻译：立体声信号解调电路
公开(公告)号：US4280101A
公开(公告)日：1981-07-21
申请号：US54117
申请日：1979-07-02
申请人： Kohji Ishida , Tatsuo Numata
发明人： Kohji Ishida , Tatsuo Numata
IPC分类号： H04B1/16 , H04H1/00 , H04H40/45 , H03D1/00
CPC分类号： H04H40/45 , H04B1/1646
摘要： A stereophonic signal demodulation circuit receives an input signal including a signal modulated with first and second channel information to separate the first and second channel information from each other. The circuit includes first and second operational amplifiers and at least two switching devices namely, first and second switches for applying the input signal through respective resistors to one input terminal of the first operational amplifier and third and fourth switches for applying the input signal through respective resistors to one input terminal of the second operational amplifier. A control device controls the operations of the first through fourth switches and the first and second operational amplifiers outputs first and second channel information, respectively.
摘要翻译：立体声信号解调电路接收包括用第一和第二信道信息调制的信号的输入信号，以将第一和第二信道信息彼此分离。该电路包括第一和第二运算放大器以及至少两个开关器件，即用于通过相应电阻器将输入信号施加到第一运算放大器的一个输入端的第一和第二开关，以及用于通过相应电阻器施加输入信号的第三和第四开关连接到第二运算放大器的一个输入端。控制装置控制第一至第四开关的操作，第一和第二运算放大器分别输出第一和第二通道信息。

3. 发明授权

US4274057A MPX Stereophonic demodulation 失效
标题翻译： MPX立体声解调
公开(公告)号：US4274057A
公开(公告)日：1981-06-16
申请号：US54116
申请日：1979-07-02
申请人： Kohji Ishida , Tatsuo Numata
发明人： Kohji Ishida , Tatsuo Numata
IPC分类号： H03D1/22 , H04H1/00 , H04H40/45 , G01P3/48 , G01P3/54
CPC分类号： H04H40/45 , H03D1/2227
摘要： An MPX stereophonic demodulation switching circuit having first and second identical switching circuits adapted to transmit a composite input signal to respective output terminals. First and second switching elements are connected respectively between the junction points of resistors in first and second transmission paths in each switching circuit, and a reference voltage line. A voltage follower circuit is provided to produce a reference voltage. Groups of resistors are connected in parallel between the output terminal of the voltage follower and one respective output terminal. Third and fourth switching elements are connected respectively between the connection points of the resistors in each group of resistors and the reference voltage line in each switching circuit. Opposite pairs of switching elements in the two switching circuits are controlled to be alternately rendered conductive and non-conductive.
摘要翻译： MPX立体声解调切换电路具有第一和第二相同的切换电路，其适于将复合输入信号发送到相应的输出端。第一和第二开关元件分别连接在每个开关电路中的第一和第二传输路径中的电阻器的连接点和参考电压线之间。提供电压跟随器电路以产生参考电压。电阻组在电压跟随器的输出端子和一个相应的输出端子之间并联连接。第三和第四开关元件分别连接在每组电阻器中的电阻器的连接点和每个开关电路中的参考电压线之间。控制两个开关电路中相对的开关元件对交替地导通和不导通。

4. 发明授权

US4539697A FM Stereo demodulating circuit 失效
标题翻译： FM立体声解调电路
公开(公告)号：US4539697A
公开(公告)日：1985-09-03
申请号：US529773
申请日：1983-09-06
申请人： Kohji Ishida , Tatsuo Numata , Masaharu Sakamoto
发明人： Kohji Ishida , Tatsuo Numata , Masaharu Sakamoto
IPC分类号： H03D1/22 , H04B1/16 , H04H1/00 , H04H40/45 , H04H40/54 , H04H5/00
CPC分类号： H04H40/54 , H03D1/2236 , H04B1/1646
摘要： An FM stereo demodulating circuit comprising a pulse counter detector 1 for generating a pulse train signal including the frequency spectrum of the FM signal, DC biasing means for current biasing the detector output about a midpoint, a subcarrier signal generator 2 and current drivers 8, 10 for generating dual polarity biased subcarrier currents, first and second transistor pairs 3, 4, the emitters of each being connected to one of the current drivers, and the bases of the pairs being cross-connected to one of the biased detector outputs, at least one reference transistor pair whose emitters are connected to a current source 11 and whose collectors are connected to each of the biased detector outputs. The currents entering the cross-connected collectors of the first and second transistor pairs, when referenced against the currents into the emitters of the reference transistor pair, produce signals proportional to the right and left channels of the FM signal.
摘要翻译：一种FM立体声解调电路，包括用于产生包括FM信号的频谱的脉冲串信号的脉冲计数器检测器1，用于电流偏置关于中点的检测器输出的DC偏置装置，副载波信号发生器2和电流驱动器8,10 为了产生双极性偏置子载波电流，第一和第二晶体管对3,4，每个的发射极连接到电流驱动器中的一个，并且对的基极至少与偏置的检测器输出之一交叉连接一个参考晶体管对，其发射极连接到电流源11，并且其集电极连接到每个偏置的检测器输出。当参考相对于参考晶体管对的发射极的电流时，进入第一和第二晶体管对的交叉集电极的电流产生与FM信号的右通道和左通道成比例的信号。

5. 发明授权

US4502148A FM Stereo demodulator for demodulating stereo signals directly from an FM intermediate frequency signal 失效
标题翻译： FM立体声解调器，用于直接从FM中频信号中解调立体声信号
公开(公告)号：US4502148A
公开(公告)日：1985-02-26
申请号：US392129
申请日：1982-06-25
申请人： Kohji Ishida , Tadashi Noguchi , Tatsuo Numata
发明人： Kohji Ishida , Tadashi Noguchi , Tatsuo Numata
IPC分类号： H03D1/22 , H04H5/00
CPC分类号： H03D1/2236 , H03D1/2209
摘要： Disclosed is an FM stereo demodulator in which components of the demodulated signal corresponding to odd harmonics of the subcarrier signal are eliminated.In order to prevent the production of odd harmonics, the multiplication between positive and negative sinusoidal subcarrier signals is performed with a stereo pilot signal and positive and negative pulse train signals produced by pulse detection of an FM signal.The multiplication signals are further added with each other to directly reproduce left and right stereophonic signals.
摘要翻译：公开了一种FM立体声解调器，其中消除了与子载波信号的奇次谐波相对应的解调信号的分量。为了防止奇次谐波的产生，利用立体声导频信号和由FM信号的脉冲检测产生的正和负脉冲串信号来执行正和负正弦副载波信号之间的相乘。乘法信号进一步相加，以直接再现左右立体声信号。

6. 发明授权

US4497063A FM stereo demodulator 失效
标题翻译： FM立体声解调器
公开(公告)号：US4497063A
公开(公告)日：1985-01-29
申请号：US392130
申请日：1982-06-25
申请人： Kohji Ishida , Tadashi Noguchi , Tatsuo Numata
发明人： Kohji Ishida , Tadashi Noguchi , Tatsuo Numata
IPC分类号： H03D1/22 , H04H5/00
CPC分类号： H03D1/2236
摘要： An FM stereo demodulator having improved separation and distortion characteristics comprising a high-frequency pulse signal which is modulated by a sinusoidal subcarrier signal produced in accordance with a stereo pilot signal. The high-frequency pulse signal is multiplied with a composite signal at a multiplier so as to reproduce left and right signals without frequency components of noise. Constructed accordingly, the invention advantageously obviates the use of a low-pass filter which injects delay characteristics and reduces gain of the composite signal from an FM demodulator.
摘要翻译：具有改进的分离和失真特性的FM立体声解调器包括由根据立体声导频信号产生的正弦副载波信号调制的高频脉冲信号。高频脉冲信号在乘法器上与复合信号相乘，以便再现没有噪声频率分量的左和右信号。相应地构造，本发明有利地避免使用注入延迟特性并降低来自FM解调器的复合信号的增益的低通滤波器。

7. 发明授权

US4523329A FM receiver 失效
标题翻译： FM接收机
公开(公告)号：US4523329A
公开(公告)日：1985-06-11
申请号：US529781
申请日：1983-09-06
申请人： Kohji Ishida , Tatsuo Numata , Masaharu Sakamoto
发明人： Kohji Ishida , Tatsuo Numata , Masaharu Sakamoto
IPC分类号： H03D1/22 , H03D3/06 , H04B1/16 , H04H1/00 , H04H40/45 , H04H5/00
CPC分类号： H03D1/2236
摘要： An FM receiver comprising a 90 degree phase shifter 21 of the FM signal and a first multiplier 22 for multiplying the FM signal and the phase shifted signal to produce a main signal L+R and a second multiplier 6 for multiplying the FM signal, the phase shifted signal and a subcarrier wave of 38 kHz to produce a sub-signal L-R.
摘要翻译： FM接收机包括FM信号的90度移相器21和用于将FM信号和相移信号相乘以产生主信号L + R的第一乘法器22和用于乘以FM信号的第二乘法器6，该相位移位信号和38kHz的副载波产生子信号LR。

8. 发明授权

US4399324A Multiplex demodulation circuit 失效
标题翻译：多路解调电路
公开(公告)号：US4399324A
公开(公告)日：1983-08-16
申请号：US183783
申请日：1980-09-03
申请人： Kohji Ishida , Tatsuo Numata
发明人： Kohji Ishida , Tatsuo Numata
IPC分类号： H03D1/22 , H04H1/00 , H04H40/45 , H04H40/63 , H04H5/00
CPC分类号： H04H40/63 , H03D1/2209
摘要： A multiplex demodulation circuit in which no band elimination filter is required for eliminating beating between the mixed signals and odd harmonics of the 38 KHz switching signal derived from the 19 KHz pilot signal. The FM detection signal is logarithmicly converted as is the 38 KHz subcarrier signal. The two logarithmically converted signals are added and then inversely logarithmically converted. The inversely logarithmically converted signal is added to the FM detection signal to produce the left channel signal while the inversely logarithmically converted signal is phase inverted then added to the FM detection signal to provide the right channel signal.
摘要翻译：一种复用解调电路，其中不需要消除滤波器来消除混合信号之间的跳动和从19KHz导频信号导出的38KHz开关信号的奇次谐波。 FM检测信号与38 KHz副载波信号对数转换。将两个对数转换的信号相加，然后对数对数转换。反向对数转换的信号被加到FM检测信号中以产生左声道信号，而反向对数转换的信号被相位反相，然后被加到FM检测信号以提供右声道信号。

9. 发明授权

US4315221A Switching circuit 失效
标题翻译：开关电路
公开(公告)号：US4315221A
公开(公告)日：1982-02-09
申请号：US78621
申请日：1979-09-25
申请人： Tatsuo Numata , Kohji Ishida
发明人： Tatsuo Numata , Kohji Ishida
IPC分类号： H03F1/00 , H03F1/30 , H03F3/18 , H03F3/20 , H03F3/30 , H03F3/72 , H03G3/10 , H03G3/34
CPC分类号： H03F1/303 , H03F3/72
摘要： A muting switching circuit for decoupling the output signal from an FM tuner including a transistor PNP-NPN pair push-pull connected between the terminals of a power source with a current mirror circuit supplying bias to the transistor pair in response to an input muting control signal. A middle point potential equal to one-half the voltage of the power source supplying current to the circuit is connected to a common connection point of the transistor pair so that when the transistors are rendered nonconductive by control of the input control signal, the common connection point thereof, which is also the output terminal of the circuit, is brought to the middle point potential immediately so that no pop noise is produced in the output signal. Preferably, a capacitor is coupled between the source of the middle point potential and ground to slow down transitions in the output signal when the power source is switched off or on to thereby prevent pop noise in the output signal at that time.
摘要翻译：一种静噪切换电路，用于将来自FM调谐器的输出信号去耦，该FM调谐器包括连接在电源端子之间的晶体管PNP-NPN对推挽，电流镜电路响应于输入静噪控制信号向晶体管对提供偏置。等于提供电流的电源的电压的一半的中点电位连接到晶体管对的公共连接点，使得当通过输入控制信号的控制使晶体管变得不导通时，公共连接它也是电路的输出端，立即被带到中点电位，使得在输出信号中不产生爆音噪声。优选地，当电源被切断或接通时，电容器耦合在中点电位源和地之间以减慢输出信号中的转换，从而防止此时输出信号中的弹出噪声。

10. 发明授权

US4696694A Pyridine derivatives and their herbicidal compositions 失效
标题翻译：吡啶衍生物及其除草组合物
公开(公告)号：US4696694A
公开(公告)日：1987-09-29
申请号：US882408
申请日：1986-07-07
申请人： Tatsuo Numata , Masataka Hatanaka , Junichi Watanabe , Takasi Ikai , Tsutomu Nawamaki , Kenji Hattori
发明人： Tatsuo Numata , Masataka Hatanaka , Junichi Watanabe , Takasi Ikai , Tsutomu Nawamaki , Kenji Hattori
IPC分类号： A01N43/50 , A01N43/90 , C07D401/04 , C07D471/04 , C07D471/14 , C07D471/22 , C07D491/04 , C07D491/048 , C07D491/052 , C07D491/153 , C07D491/22 , C07D495/04 , A01N43/40
CPC分类号： C07D401/04 , A01N43/50 , A01N43/90 , C07D471/04 , C07D491/04 , C07D495/04
摘要： A pyridine derivative having the formula: ##STR1## wherein one of A, B, D and E is oxygen, sulfur, --SO--, --SO.sub.2 --, --NR.sup.3 --, ##STR2## or .dbd.CH-- with the rest being all carbon atoms; X is halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylthioalkyl, tetrahydrothiopyranyl, hydroxyl, CF.sub.3, phenyl or pyridyl; n is an integer of from 0 to 6,; W is oxygen or sulfur; R is hydrogen, di-lower alkylimino, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.2 -C.sub.5 alkynyl, C.sub.4 or C.sub.5 oxacycloalkyl, C.sub.2 -C.sub.5 mono-, di- or tri-haloalkenyl, C.sub.2 -C.sub.5 haloalkynyl, glycidyl, furfuryl, alkylthioalkyl, C.sub.3 -C.sub.6 cycloalkyl or a cation R.sup.1 is C.sub.1 -C.sub.4 alkyl, R.sup.2 is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl, or R.sup.1 and R.sup.2 together with the ajacent carbon atom, form C.sub.3 -C.sub.6 cycloalkyl; and R.sup.3 is hydrogen or C.sub.1 -C.sub.3 alkyl. The compounds are used as herbicides.
摘要翻译：具有下式的吡啶衍生物：其中A，B，D和E中的一个为氧，硫，-SO-，-SO 2 - ，-NR 3 - ，X 3 =或CH-，其余为全部为碳原子; X是卤素，C 1 -C 4烷基，C 1 -C 4烷氧基，C 1 -C 4卤代烷基，C 1 -C 4卤代烷氧基，C 1 -C 4烷硫基，C 1 -C 4卤代烷硫基，C 1 -C 4烷氧羰基，C 1 -C 4烷硫基烷基，四氢噻喃基，羟基，CF 3，苯基或吡啶基; n为0〜6的整数; W是氧或硫; R是氢，二低级烷基亚氨基，C 1 -C 5烷基，C 2 -C 5烯基，C 2 -C 5炔基，C 4或C 5环烷基，C 2 -C 5单 - ，二 - 或三 - 卤代烯基，C 2 -C 5卤代炔基，缩水甘油基，糠基烷基硫代烷基，C 3 -C 6环烷基或阳离子R 1为C 1 -C 4烷基，R 2为C 1 -C 4烷基或C 3 -C 6环烷基，或R 1和R 2与相邻碳原子一起形成C 3 -C 6环烷基; 并且R 3是氢或C 1 -C 3烷基。该化合物用作除草剂。

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