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1. 发明专利

JP2008219283A Differential current mode transmission circuit 审中-公开
标题翻译：差分电流模式传输电路
公开(公告)号：JP2008219283A
公开(公告)日：2008-09-18
申请号：JP2007051811
申请日：2007-03-01
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SORAMOTO TAKAO , OZASA MASAYUKI , KOBAYASHI HITOSHI
IPC分类号： H03F3/19 , H01L21/8222 , H01L21/8248 , H01L21/8249 , H01L27/06 , H01L27/082 , H03F3/45 , H03F3/68
摘要： PROBLEM TO BE SOLVED: To provide a differential current mode transmission circuit having a satisfactory high frequency characteristic and a high breakdown voltage at an output stage.
SOLUTION: The differential current mode transmission circuit is provided with: a first buffer 3 configured by using Si-BJT (silicon bipolar junction transistor); a signal processing circuit 4 configured by using SiGeHBT (silicon-germanium bipolar hetero-junction transistor), or SiGeHBT and Si-BJT, or SiGeHBT, a silicon MOSFET and Si-BJT; and a second buffer 5 at the last stage configured by using SiGeHBT and Si-BJT, or SiGeHBT and the silicon MOSFET, wherein the first buffer, the signal processing circuit and the second buffer are integrated in one and the same semiconductor chip.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供在输出级具有令人满意的高频特性和高击穿电压的差动电流模式传输电路。解决方案：差动电流模式传输电路设有：通过使用Si-BJT（硅双极结型晶体管）构成的第一缓冲器3; 通过使用SiGeHBT（硅 - 锗双极异质结晶体管）或SiGeHBT和Si-BJT或SiGeHBT，硅MOSFET和Si-BJT构成的信号处理电路4; 以及通过使用SiGeHBT和Si-BJT或SiGeHBT和硅MOSFET构造的最后级的第二缓冲器5，其中第一缓冲器，信号处理电路和第二缓冲器集成在同一半导体芯片中。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2006324795A RECEPTION IF SYSTEM HAVING IMAGE REJECTION MIXER AND BAND FILTER 审中-公开
公开(公告)号：JP2006324795A
公开(公告)日：2006-11-30
申请号：JP2005144415
申请日：2005-05-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OKUBO MANABU , YOKOYAMA AKIO , OZASA MASAYUKI , SORAMOTO TAKAO
IPC分类号： H04B1/26
摘要： PROBLEM TO BE SOLVED: To reduce an area of a reception substrate by inexpensively integrating an image rejection filter and a channel selection filter in high performance. SOLUTION: The reception IF system is provided with frequency converters 3a, 3b to obtain an intermediate multiple phase signal for suppressing an image component of an RF signal from an input signal, a polyphase filter 5 for removing the image component from the intermediate multiple phase signal, and a bandpass filter 8 composed of an N pass filter for performing channel selection on an intermediate frequency signal in which the image component is removed from the output of the polyphase filter. COPYRIGHT: (C)2007,JPO&INPIT

3. 发明专利

JP2005094098A Hysteresis comparator 审中-公开
标题翻译： HYSTERESIS比较器
公开(公告)号：JP2005094098A
公开(公告)日：2005-04-07
申请号：JP2003320982
申请日：2003-09-12
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SORAMOTO TAKAO , OZASA MASAYUKI
IPC分类号： H03K5/08
摘要： PROBLEM TO BE SOLVED: To provide a high response hysteresis comparator.
SOLUTION: A power supply becoming the reference of a load circuit is constituted of a first inverter 1 and a buffer 2 having short-circuited input and output, and a hysteresis control circuit 5 regulates the amount of shift of first and second load circuits 3 and 4 based on the output from a differential amplifier 6 thus constituting hysteresis. Since the center of output range of a comparator (input range of second and third inverters 7 and 8) becomes the threshold voltage of the inverter, delay time can be shortened by contracting the input range of both inverters 7 and 8 precisely resulting in high speed operation.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供高响应迟滞比较器。
解决方案：成为负载电路基准的电源由第一反相器1和具有短路输入和输出的缓冲器2构成，并且滞环控制电路5调节第一和第二负载的移位量电路3和4基于差分放大器6的输出，从而构成迟滞。由于比较器的输出范围（第二和第三反相器7和8的输入范围）的中心变为逆变器的阈值电压，所以可以通过缩小两个逆变器7和8的输入范围来精确地导致高速度来缩短延迟时间操作。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004248014A Current source and amplifier 审中-公开
公开(公告)号：JP2004248014A
公开(公告)日：2004-09-02
申请号：JP2003036431
申请日：2003-02-14
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： OZASA MASAYUKI , SHIMAOKA HIROYASU
IPC分类号： G05F3/26 , H03F3/343 , H03F3/345 , H03F3/45
CPC分类号： G05F3/262
摘要： PROBLEM TO BE SOLVED: To provide a current source with which an outflow current and an inflow current can be equalized in an electronic apparatus and a semiconductor integrated circuit and further, to provide an amplifier with which a gain can be enlarged while securing a stabilized operating point.
SOLUTION: The current source is provided with a first transistor which comprises a reference current source, a reference voltage and a current mirror and outputs a current, a first amplifier, second and third transistors which are driven by an output of the amplifier, and a means for converting a current of the second transistor into a voltage. Further, the amplifier is provided with a second amplifier which operates with the current of the current source and defines a voltage of a voltage source as a criterion of the operating point.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2003008398A Filter circuit 审中-公开
标题翻译：滤波电路
公开(公告)号：JP2003008398A
公开(公告)日：2003-01-10
申请号：JP2001191142
申请日：2001-06-25
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： HASHIMOTO TAKAO , OZASA MASAYUKI , FUKUDA KOICHI
IPC分类号： H03H11/04
摘要： PROBLEM TO BE SOLVED: To obtain a desired frequency characteristic by solving the problem that the desired characteristic cannot be obtained because a large design error is made in the ratio of capacitances between a gmC filters due to the parasitic capacity of a transistor in a filter circuit obtained by multistage cascade connection of the gmC filters.
SOLUTION: The filter circuit consists of the gmC filters cascade-connected to have multistage of at least stages. The gmC filter at each stage has an input differential pair consisting of NPN bipolar transistors 104 and 105 having input signals to be added to each base, P channel MOS transistors 102 and 103 the drains of which are respectively connected to the connectors of the transistors 104 and 105, and a capacitor 107 connected to the collector of the transistor 104. Then, the each size ratio of the transistor 102 of the gmC filter at each stage is set to be nearly equal to each capacity ratio of the capacitor 107 of the gmC filter at each stage.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了通过解决由于滤波器电路中的晶体管的寄生电容而导致的gmC滤波器之间的电容比的大的设计误差，通过解决不能获得期望特性的问题来获得期望的频率特性通过gmC过滤器的多级级联连接得到。解决方案：滤波电路由级联连接的gmC滤波器组成，具有至少阶段的多级。每级的gmC滤波器具有由NPN双极晶体管104和105组成的输入差分对，该NPN双极晶体管104和105具有要添加到每个基极的输入信号，P沟道MOS晶体管102和103分别连接到晶体管104的连接器和105，以及连接到晶体管104的集电极的电容器107.然后，将各级的gmC滤波器的晶体管102的每个尺寸比设定为几乎等于gmC的电容器107的每个容量比在每个阶段过滤。

6. 发明专利

JPH05342590A 失效
公开(公告)号：JPH05342590A
公开(公告)日：1993-12-24
申请号：JP15358492
申请日：1992-06-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZASA MASAYUKI , TAKIGUCHI MASAO , AKIYAMA KAZUO , ENOMOTO YASUHIRO
IPC分类号： G11B7/00 , G11B7/005 , H04B1/04
摘要： PURPOSE:To select one proper amplifier from between two amplifiers whose frequency characteristics are different from each other, and to always obtain a proper frequency characteristic by switching a switcher according to the reproducing state of a signal. CONSTITUTION:This device is equipped with two signal paths whose frequency characteristics are different from each other, the signal path is selected by comparing the signal level of the upper side band with the signal level of the lower side band of a side band appearing in a modulated signal, and the frequency characteristic is appropriately corrected according to the modulated signal. Thus, the device is equipped with two amplifiers 2 and 3 which amplify the modulated signal by the different frequency characteristic, a switcher 4 which selects and outputs one of the output signals of the amplifiers 2 and 3, and a side band detecting means I which individually detects the signal level of the upper side band and the signal level of the lower side band of the side band appearing in the modulated signal at the input side of the amplifiers 2 and 3 to compare them with each other, and controls the switching operation of the switcher according to the compared result.

7. 发明专利

JPH0468981A FM DEMODULATOR 失效
公开(公告)号：JPH0468981A
公开(公告)日：1992-03-04
申请号：JP18082890
申请日：1990-07-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZASA MASAYUKI , KIMURA TOMONOBU
IPC分类号： H04N5/922 , G11B20/06 , H03D3/00 , H03D3/06 , H04B1/10 , H04N5/92
摘要： PURPOSE:To reduce shock noise due to disturbance in an input signal by providing a switch circuit selecting a pulse train of a demodulation signal into a voltage source of a prescribed voltage with a detection signal detecting the disturbance in the input signal to the demodulator. CONSTITUTION:The demodulator is provided with a limiter circuit 2 converting an FM signal into a rectangular wave, a delay circuit 3 delaying an output signal of the limiter circuit 2 for a prescribed time, a multiplier 4 multiplying the output signal of the limiter circuit 2 with an output signal of the delay circuit 3, a switch circuit 5 replacing an output of the multiplier 4 into a prescribed DC potential, and a low pass filter 6 extracting a modulation signal from the output signal of the switch circuit 5. When an input signal is lost, the input to the low pass filter 6 is replaced to a potential set properly from the output of the multiplier 4 by means of the switch circuit 5. Thus, shock noise in a demodulation output is reduced.

8. 发明专利

JPH03247111A OPERATIONAL AMPLIFIER 失效
公开(公告)号：JPH03247111A
公开(公告)日：1991-11-05
申请号：JP4488590
申请日：1990-02-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZASA MASAYUKI , NAGAOKA KAZUHIKO , KARITA YOSHIHIRO
IPC分类号： G06G7/12 , H03F1/34 , H03H11/12
摘要： PURPOSE:To smooth the transient characteristic of a signal by providing a switch to an input terminal of an operational amplifier. CONSTITUTION:When a switch SW1 is opened and a switch SW2 is closed at a time t=0, a voltage at a VOUT reaches -VIN(R2/R1) at t 0 is kept and the charge stored in a capacitor C is discharged through a resistor R2. The relation of VOUT=-VIN(R2/R1) in the vicinity of a negative value at t=0 and the relation of VOUT=-VIN(R2/ R1) exists in the vicinity of a positive signal. Thus, the VOUT is made continuous.

9. 发明专利

JPS6156600B2 失效
公开(公告)号：JPS6156600B2
公开(公告)日：1986-12-03
申请号：JP19750281
申请日：1981-12-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAKAMI OONORI , OZASA MASAYUKI
IPC分类号： G11C27/00 , G11C27/02

10. 发明专利

JPS5883404A CLIP CIRCUIT 失效
公开(公告)号：JPS5883404A
公开(公告)日：1983-05-19
申请号：JP18207281
申请日：1981-11-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OZASA MASAYUKI , MURAKAMI OONORI
IPC分类号： H03B5/32 , H03G11/00
摘要： PURPOSE:To improve the distortion characteristics at a small current region, by connecting a transistor (TR) controlled in response to the current of a clip level setting TR in parallel with distortion correction differential pair TRs. CONSTITUTION:TRs 6, 7 of differential pair constitution for detection, TRs 8, 9 of differential pair constitution correcting distortion, and a clip level setting TR14 are provided, and a circuit reducing an output distortion region is provided between the TR14 and the TRs 8, 9 of differential constitution. This circuit consists of a TR15 connected in parallel with the TRs 8, 9 and the emitter current is controlled with a current of the TR14. Thus, the range of the output distorted region can be decreased.

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