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公开(公告)号：JP2003037171A
公开(公告)日：2003-02-07
申请号：JP2001220877
申请日：2001-07-23
Applicant: Niigata Seimitsu Kk , 新潟精密株式会社
Inventor： KARASUTANI MUNEHIRO
IPC: H01L21/822 , H01L21/82 , H01L21/8238 , H01L21/8249 , H01L27/04 , H01L27/06 , H01L27/092 , H03J1/00 , H04B1/16
CPC classification number: H04B1/005 , H03J1/0008 , H04B1/1646 , H04B1/406 , H04B15/00
Abstract: PROBLEM TO BE SOLVED: To protect a noise joined through an analog control line connected to each of circuit blocks and inhibit a deterioration of analog characteristics and an error operation of the circuit when a plurality of circuit blocks are integrated on a chip 1 by CMOS technology.
SOLUTION: The analog control lines 5
-1 , 5
-2 are wired to make a detour outside the layout of the AM/FM common circuit block 3 so that the circuit blocks 1-3 constituted by the CMOS process and the analog control lines 5
-1 , 5
-2 , 5
-3 connected to them are not overlapped each other, thereby, the signal line in the AM/FM common circuit block 3 and the analog control lines 5
-1 , 5
-2 can be located as apart as possible each other so as not to join the signal line in the AM/FM common circuit block 3 and the analog control lines 5
-1 , 5
-2 through a parasitic capacitance. Thus, a signal mutual-interference caused between the signal line and the analog control lines 5
-1 , 5
-2 can be inhibited.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了保护通过连接到每个电路块的模拟控制线连接的噪声，并且当通过CMOS技术将多个电路块集成在芯片1上时，抑制模拟特性的劣化和电路的错误操作 。 解决方案：模拟控制线路5-1,5-2被布线以在AM / FM公共电路块3的布局之外绕行，使得由CMOS工艺和模拟控制线5构成的电路块1-3 -1,5-2,5-3彼此不重叠，因此AM / FM公共电路块3和模拟控制线5-1,5-2中的信号线可以分开 尽可能彼此以不通过寄生电容加入AM / FM公共电路块3和模拟控制线5-1,5-2中的信号线。 因此，可以抑制在信号线与模拟控制线5-1,5-2之间产生的信号互相干扰。
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公开(公告)号：JP2003023328A
公开(公告)日：2003-01-24
申请号：JP2001205634
申请日：2001-07-06
Applicant: Niigata Seimitsu Kk , 新潟精密株式会社
Inventor： KITAMURA MAMORU
CPC classification number: H03F3/2171 , H03F3/2173 , H03F2200/331
Abstract: PROBLEM TO BE SOLVED: To enable a speaker 3 to obtain a large output power from a small power supply voltage VDD of a power switch 1 (IC chip 10).
SOLUTION: A transformer 11 for converting an input current to voltage output is provided between the power switch 1 for amplifying and outputting an audio signal on the basis of the power supply voltage VDD supplied to MOS transistors Q1-Q4 and the speaker 3. Then a turn ratio (Ns/Np) is properly determined to generate the large voltage Vs on both the terminals of the speaker 3 from the small power supply voltage VDD even without enlarging the power supply voltage VDD of the power switch 1, thereby obtaining the large output power.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：为了使扬声器3能够从电力开关1（IC芯片10）的小电源电压VDD获得大的输出功率。 解决方案：用于将输入电流转换为电压输出的变压器11设置在功率开关1之间，用于根据提供给MOS晶体管Q1-Q4的电源电压VDD和扬声器3放大和输出音频信号。然后a 适当地确定匝数比（Ns / Np），以便即使没有放大电源开关1的电源电压VDD，也可以从小电源电压VDD产生扬声器3的两个端子上的大电压Vs，从而获得大的输出 功率。
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公开(公告)号：JP2003018030A
公开(公告)日：2003-01-17
申请号：JP2001198215
申请日：2001-06-29
Applicant: Niigata Seimitsu Kk , 新潟精密株式会社
Inventor： MIYAGI HIROSHI
CPC classification number: H04B1/28
Abstract: PROBLEM TO BE SOLVED: To provide a receiver that can reduce a sneak path of noise from a crystal vibrator.
SOLUTION: An analog circuit 20, an oscillator 30, a logic circuit 32, and a power supply circuit 34 which is components of the receiver are formed as a one-chip component 10. The power supply circuit 34 generates 2 kinds of operating voltages, applies a 1st operating voltage to the analog circuit 20, and applies a 2nd operating voltage which is lower than the 1st operating voltage to the oscillator 30 and to the logic circuit 32.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供可以减少来自晶体振动器的噪声的潜行路径的接收机。 解决方案：作为接收器的组件的模拟电路20，振荡器30，逻辑电路32和电源电路34形成为单片元件10.电源电路34产生2种工作电压， 向模拟电路20施加第一工作电压，并将低于第一工作电压的第二工作电压施加到振荡器30和逻辑电路32。
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公开(公告)号：JP2008193209A
公开(公告)日：2008-08-21
申请号：JP2007022997
申请日：2007-02-01
Applicant: Niigata Seimitsu Kk , 新潟精密株式会社
Inventor： TAKAHASHI NAOKI
CPC classification number: H04L27/20
Abstract: PROBLEM TO BE SOLVED: To enable accurate quadrature modulation with less error without increasing a hardware scale. SOLUTION: A quadrature modulator provided with an integrator 4 for integrating a digital composite signal and outputting the integrated result as a value with a code and a CORDIC 6 for generating a digital quadrature modulation signal by calculating the amplitude values of a sine wave and a cosine wave which correspond to the value outputted from the integrator 4 converts the digital composite signal into an operable value by the CORDIC 6 through integration and generates a quadrature modulation signal by the digital operation of a trigonometric function in the CORDIC 6 so that a lookup table can be made unnecessary, the resolution of an integration output value can be improved by providing the integrator 4 with a comparatively large bit width and an extremely accurate quadrature modulation signal with less error can be obtained. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：为了在不增加硬件比例的情况下，以更少的误差实现精确的正交调制。 解决方案：具有积分器4的正交调制器，用于积分数字复合信号，并将积分结果输出为具有代码的值和CORDIC 6，用于通过计算正弦波的振幅值来产生数字正交调制信号 并且对应于从积分器4输出的值的余弦波通过积分将数字复合信号转换为CORDIC 6的可操作值，并通过CORDIC 6中的三角函数的数字运算产生正交调制信号，使得 可以使查找表不必要，通过向积分器4提供相对较大的位宽度可以提高积分输出值的分辨率，并且可以获得具有较小误差的极精确的正交调制信号。 版权所有（C）2008，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2008141452A
公开(公告)日：2008-06-19
申请号：JP2006325230
申请日：2006-12-01
Applicant: Niigata Seimitsu Kk , Ricoh Co Ltd , 新潟精密株式会社 , 株式会社リコー
Inventor： ISHIGURO KAZUHISA , TAKAHASHI YOSHIAKI
IPC: H03D7/14
CPC classification number: H03D7/1441 , H03D7/1458 , H03D2200/0043 , H03D2200/0084
Abstract: PROBLEM TO BE SOLVED: To reduce operating power supply voltage and to cope with both a differential input and a single input without using a transformer, etc.
SOLUTION: In the mixer circuit, transistors N3 and N4 for a source of constant current are cascade-connected to the sources of a transistor differential pair N1 and N2 which constitutes a differential amplifier, respectively, and a bias circuit 10 is so configured as to apply bias voltage Vgs of the same potential to the transistor differential pair N1 and N2 and the transistors N3 and N4 for a source of constant current. Because of this structure, even if the bias voltage applied to the transistor differential pair N1 and N2 is the same as the bias voltage Vgs applied to the transistors N3 and N4 for a source of constant current when there is no signal input, the differential amplifier can be operated normally by making the drain current in each transistor N1-N4 equivalent to a reference current Ir in the bias circuit 10.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：为了减少工作电源电压，并且在不使用变压器等的情况下应对差分输入和单个输入。解决方案：在混频器电路中，用于源的晶体管N3和N4 恒定电流分别连接到构成差分放大器的晶体管差分对N1和N2的源极，并且偏置电路10被配置为将相同电位的偏置电压Vgs施加到晶体管差动对N1 N2和用于恒定电流源的晶体管N3和N4。 由于这种结构，即使施加到晶体管差分对N1和N2的偏置电压与当没有信号输入时用于恒定电流源的施加到晶体管N3和N4的偏置电压Vgs相同，则差分放大器 通过在每个晶体管N1-N4中的漏极电流与偏置电路10中的参考电流Ir相当，可以正常工作。版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JPWO2006051839A1
公开(公告)日：2008-05-29
申请号：JP2006544935
申请日：2005-11-10
Applicant: 新潟精密株式会社
CPC classification number: H04M1/72522 , H04B1/3805 , H04H40/18 , H04M1/0214
Abstract: AMラジオ出力音声に混入するノイズを低減することができるAMラジオ付き携帯機器を提供することを目的とする。携帯電話100は、表示部32、34に動作内容を表示しながら所定の処理を行う電話処理部10と、AMラジオ放送を受信して復調された音声信号を出力するAMラジオチューナ部20とが一体になったAMラジオ付き携帯機器であって、AMラジオチューナ部20によるAMラジオ放送の受信開始指示を行う操作部30と、操作部30を用いた受信開始指示が行われたときに表示部32、34の表示状態を変更する制御部40とを備えている。
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公开(公告)号：JP4092205B2
公开(公告)日：2008-05-28
申请号：JP2002566828
申请日：2002-02-21
Inventor： 弘 宮城
CPC classification number: H03F3/45645 , H03F3/16 , H03F3/193 , H03F3/195 , H03F2200/168 , H03F2200/54 , H03F2203/45051 , H03F2203/45458 , H03F2203/45526 , H03F2203/45631 , H03F2203/45652
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公开(公告)号：JP2008103888A
公开(公告)日：2008-05-01
申请号：JP2006283630
申请日：2006-10-18
Applicant: Niigata Seimitsu Kk , Ricoh Co Ltd , 新潟精密株式会社 , 株式会社リコー
Inventor： IKEDA TAKESHI , MIYAGI HIROSHI
IPC: H03B5/20
CPC classification number: H03K4/52 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1265
Abstract: PROBLEM TO BE SOLVED: To provide a voltage-controlled oscillator which can easily be integrated in an IC and can reduce noise. SOLUTION: The voltage-controlled oscillator includes resistances R1 and R2, a feedback circuit of a cross-coupled pair of transistors M1 and M2 for oscillation, varactor diodes D1 and D2, and bias circuits M4 and M5 which apply a fixed bias voltage to the varactor diodes D1 and D2. The voltage-controlled oscillator is constituted without using the inductor which is not suitable for IC implementation and without using a constant-current source which is apt to generate large current noise by making it possible to control the oscillation frequency by varying capacity values of the varactor diodes D1 and D2 with a tuning voltage V T . COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题：提供可以容易地集成在IC中并且可以降低噪声的压控振荡器。 解决方案：压控振荡器包括电阻R1和R2，用于振荡的交叉耦合晶体管M1和M2对的反馈电路，变容二极管D1和D2以及施加固定偏置的偏置电路M4和M5 电压到变容二极管D1和D2。 压控振荡器构成为不使用不适合于IC实现的电感器，并且不使用易于产生大电流噪声的恒流源，可以通过改变变容二极管的容量值来控制振荡频率 具有调谐电压V
T 的二极管D1和D2。 版权所有（C）2008，JPO＆INPIT -
公开(公告)号：JP2008099337A
公开(公告)日：2008-04-24
申请号：JP2008003790
申请日：2008-01-11
Applicant: Niigata Seimitsu Kk , Ricoh Co Ltd , 新潟精密株式会社 , 株式会社リコー
Inventor： MIYAGI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To provide an FET band amplifier by which high gain is obtained.
SOLUTION: An FET band amplifier 5 included in an AM receiver comprises: amplifiers 11-15 of five stages, for example; and a BPF 16 which is inserted in the middle of the amplifiers. Each of the amplifiers 11-15 operates as a differential amplifier using a p-channel FET as an amplifying element. The BPF 16 passes band component wider than amplification band of the whole FET band amplifier. Components are integrally formed on a semiconductor substrate using a CMOS process or an MOS process. By eliminating low frequency components of a signal amplified by the amplifiers 11-13 of three stages, 1/f noise is reduced. By eliminating high frequency components, thermal noise can be reduced. As a result, each of the amplifiers 14, 15 connected with the post-stage of the BPF 16 is not saturated by noise component.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种获得高增益的FET带放大器。 解决方案：包括在AM接收器中的FET带放大器5包括：例如五级的放大器11-15; 以及插入在放大器的中间的BPF16。 放大器11-15中的每个用作使用p沟道FET作为放大元件的差分放大器。 BPF 16通过宽于整个FET频带放大器的放大频带的频带分量。 使用CMOS工艺或MOS工艺在半导体衬底上整体地形成元件。 通过消除由三级放大器11-13放大的信号的低频分量，1 / f噪声降低。 通过消除高频分量，可以减少热噪声。 结果，与BPF 16的后级相连的放大器14,15中的每一个不被噪声分量饱和。 版权所有（C）2008，JPO＆INPIT
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