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    • 1. 发明授权
    • Semiconductor integrated circuit
    • 半导体集成电路
    • US5679971A
    • 1997-10-21
    • US505459
    • 1995-07-21
    • Yuko TambaAkihiro NagataniTakao Okazaki
    • Yuko TambaAkihiro NagataniTakao Okazaki
    • H01L27/04H01L21/822H01L21/8234H01L27/02H01L27/088H01L29/06H01L29/78
    • H01L27/0251H01L27/0255H01L27/0266H01L2924/0002
    • In a semiconductor integrated circuit having a plurality of electronic circuits each provided with interfaces used for effecting signal transmission, and supplied with operating voltages from a plurality of independent power supply terminals, protective elements each having high threshold voltages at which the elements are off in the ordinary state of power supply are provided, and a resistor and a diode both for preventing electrostatic breakdown are connected to the gate of an input MOSFET of the interface for carrying out signal transmission between the electronic circuits. Even when a high voltage due to static electricity is applied to each power supply terminal while the semiconductor integrated circuit is handled, electrostatic breakdown of the interface can be prevented by the protective element or the electrostatic breakdown preventive circuit comprising a resistor and a diode.
    • 在具有多个电子电路的半导体集成电路中,每个电子电路设置有用于进行信号传输的接口,并且提供来自多个独立电源端子的工作电压,每个具有高阈值电压的保护元件, 提供通常的电源状态,并且用于防止静电击穿的电阻器和二极管连接到用于在电子电路之间执行信号传输的接口的输入MOSFET的栅极。 即使当处理半导体集成电路时由静电导致的高电压施加到每个电源端子时,也可以通过包括电阻器和二极管的保护元件或防静电电路来防止界面的静电破坏。
    • 2. 发明授权
    • Converter, offset adjustor, and portable communication terminal unit
    • 转换器,偏移调整器和便携式通信终端单元
    • US5515047A
    • 1996-05-07
    • US170411
    • 1993-12-20
    • Kazuo YamakidoYoichiro KobayashiMasanori OtsukaTakao OkazakiYukihito IshiharaNorimitsu NishikawaYuko Tamba
    • Kazuo YamakidoYoichiro KobayashiMasanori OtsukaTakao OkazakiYukihito IshiharaNorimitsu NishikawaYuko Tamba
    • H03M1/10H03M1/68H03M1/74H04B1/40H03M1/06
    • H03M1/687H03M1/1019H03M1/745H03M1/747
    • The number of current sources and switches necessary for a plurality of unit D/A converters using equal reference currents, are drastically reduced to reduce the parasitic capacitance coupled to current output lines, by converting a plurality of digital signals of a predetermined bit, which are divided from an input digital signal, into an analog current unit D/A converters and by converting the analog current in a manner to correspond to the weights of the corresponding input digital signals, thereby to synthesize the currents. The fixed reference digital signal is inputted to the D/A converter for cancelling offsets. The offsets of a plurality of analog output signals in positive and opposite phases obtained by branching the output of the D/A converter are individually detected. After this, the DC offset values of the individual analog outputs are used as offset adjusted negative feedback signals for a desired value. One of them is the digital signal to be fed back to the input portion of the D/A converter whereas the other is the analog signal to be fed to a path portion obtained by branching the output of the D/A converter.
    • 使用相同参考电流的多个单元D / A转换器所需的电流源和开关的数量被大大减少,通过转换预定位的多个数字信号来减小耦合到电流输出线的寄生电容, 从输入数字信号中分离成模拟电流单元D / A转换器,并通过转换模拟电流以对应于相应的输入数字信号的权重,从而合成电流。 固定参考数字信号被输入到D / A转换器以取消偏移。 分别检测通过分支D / A转换器的输出而获得的正相位和相位相位中的多个模拟输出信号的偏移。 之后,各个模拟输出的DC偏移值用作所需值的偏移调整负反馈信号。 其中一个是要反馈到D / A转换器的输入部分的数字信号,而另一个是要馈送到通过分支D / A转换器的输出而获得的路径部分的模拟信号。
    • 4. 发明授权
    • Semiconductor integrated circuit and radio communication apparatus for communication
    • 用于通信的半导体集成电路和无线电通信装置
    • US07929594B2
    • 2011-04-19
    • US11430009
    • 2006-05-09
    • Takao OkazakiSatoru Fukuchi
    • Takao OkazakiSatoru Fukuchi
    • H04B1/38H04L27/00H04L7/00
    • H04L27/2272H03M1/0607H03M1/682H03M1/765H04L2027/0028H04L2027/0055
    • A total power consumption of a radio communication apparatus is reduced, the radio communication apparatus including a semiconductor integrated circuit (high-frequency IC) which has a clock generation circuit which generates a reference clock signal for use in modulating a transmit signal and demodulating a received signal. The clock generation circuit is provided with a voltage-controlled oscillator circuit (VCXO) which oscillates, when a quartz oscillator is connected thereto, at a frequency dependent on a natural frequency of the quartz oscillator and a control voltage applied thereto. The voltage-controlled oscillator circuit is configured such that a result obtained by converting, in an internal D/A converter circuit, digital frequency control information supplied from the baseband circuit is applied as the control voltage to the voltage-controlled oscillator circuit and such that the voltage-controlled oscillator circuit oscillates at a frequency corresponding to the control voltage.
    • 无线电通信装置的总功耗降低,无线电通信装置包括半导体集成电路(高频IC),该半导体集成电路具有时钟发生电路,该时钟产生电路产生用于调制发送信号的基准时钟信号, 信号。 时钟发生电路设置有压电振荡器电路(VCXO),当石英振荡器与其连接时,振荡器以与石英振荡器的固有频率相关的频率和施加到其的控制电压振荡。 压控振荡器电路被配置为使得通过在内部D / A转换器电路中转换从基带电路提供的数字频率控制信息而获得的结果作为控制电压被施加到压控振荡器电路,并且使得 压控振荡器电路以对应于控制电压的频率振荡。
    • 8. 发明申请
    • STEP-UP DC/DC SWITCHING CONVERTER AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 升压型DC / DC开关转换器和半导体集成电路器件
    • US20100301824A1
    • 2010-12-02
    • US12786263
    • 2010-05-24
    • Masahiko YAMAMOTOTakao Okazaki
    • Masahiko YAMAMOTOTakao Okazaki
    • G05F1/46
    • H02M3/156
    • A step-up DC/DC converter having a step-up circuit which can performs a stable control without depending on a logic threshold of a semiconductor switching device and a semiconductor integrated circuit device having the step-up DC/DC converter are provided. The step-up DC/DC converter includes: a control logic which generates a driving voltage to be supplied to a semiconductor switching device; a power supply circuit which steps-up a battery voltage to perform a level shift of the driving voltage output by the control logic; and an amplifier operated with using a voltage generated by the semiconductor switching device as a power supply. Since the level-shifted semiconductor switching device control signal is higher than a logic threshold voltage of the semiconductor switching device, the ON/OFF of the semiconductor switching device can be controlled.
    • 提供了一种具有升压电路的升压DC / DC转换器,其可以执行稳定的控制而不依赖于半导体开关器件的逻辑阈值和具有升压型DC / DC转换器的半导体集成电路器件。 升压DC / DC转换器包括:产生要提供给半导体开关器件的驱动电压的控制逻辑; 电源电路,其升高电池电压,以执行由所述控制逻辑输出的驱动电压的电平偏移; 以及使用由半导体开关器件产生的电压作为电源进行工作的放大器。 由于电平移位半导体开关器件控制信号高于半导体开关器件的逻辑阈值电压,因此可以控制半导体开关器件的导通/截止。
    • 10. 发明授权
    • Macrolide compounds, their preparation and their use
    • 大环内酯类化合物,其制备及其用途
    • US5212322A
    • 1993-05-18
    • US644100
    • 1991-01-22
    • Takao OkazakiShuji TakahashiSeigo IwadoKeiji TanakaToshiaki YanaiHisaki Kajino
    • Takao OkazakiShuji TakahashiSeigo IwadoKeiji TanakaToshiaki YanaiHisaki Kajino
    • A01N49/00C07H19/01C12P17/18
    • C07H19/01A01N49/00C12P17/181Y02P20/55Y10S424/08
    • Compounds with acaricidal, insecticidal and anthelmintic activities have the formula: ##STR1## wherein: --X--Y-- is selected from the group consisting of --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CHOH--, --CH.dbd.CH--, and --CH.sub.2 --C(.dbd.O)--;R.sup.1 is selected from the group consisting of a methyl group, an ethyl group, an isopropyl group, a sec-butyl group and groups of formula --C(CH.sub.3).dbd.CHR.sup.5 in which R.sup.5 is selected from the group consisting of a methyl group, an ethyl group and an isopropyl group;R.sup.2 represents a group of formula --(CH.sub.2).sub.n --C(R.sup.6).dbd.C(R.sup.7)(R.sup.8) in which n is 0, 1 or 2, R.sup.6 and R.sup.7 each is selected from the group consisting of a hydrogen atom and a methyl group and R.sup.8 is selected from the group consisting of a hydrogen atom, a C.sub.1-4 alkyl group, a phenyl group and a phenyl group substituted with at least one substituent selected from the group consisting of halogen, methyl and nitro substituents;R.sup.3 is selected from the group consisting of a hydrogen atom, a methyl group, a hydroxy-protecting group, an ester-forming carboxylic acid residue, and an ester-forming carbonic acid residue; andR.sup.4 is selected from the group consisting of a hydrogen atom and an .alpha.-L-oleandrosyl-.alpha.-L-oleandrosyloxy group, with the proviso that R.sup.4 represents a hydrogen atom when the group R.sup.1 is selected from the group consisting of a methyl group, an ethyl group, and groups of formula --C(CH.sub.3).dbd.CHR.sup.5 in which R.sup.5 is selected from the group consisting of a methyl group, an ethyl group and an isopropyl group.
    • 具有杀螨,杀虫和驱虫活性的化合物具有下式:其中:-XY-选自-CH 2 -CH 2 - , - CH 2 -CHOH - , - CH = CH-和 - CH2-C(= O) - ; R 1选自甲基,乙基,异丙基,仲丁基和式-C(CH 3)= CHR 5的基团,其中R 5选自甲基, 乙基和异丙基; R 2表示式 - (CH 2)n C(R 6)= C(R 7)(R 8)的基团,其中n为0,1或2,R 6和R 7各自为氢原子和甲基 并且R 8选自氢原子,C 1-4烷基,苯基和被至少一个选自卤素,甲基和硝基取代基的取代基取代的苯基; R3选自氢原子,甲基,羟基保护基,成酯羧酸残基和形成酯的碳酸残基; 并且R 4选自氢原子和α-L-甘氨酰基-α-L-胆碱基氧基,条件是当R 1选自甲基时,R 4表示氢原子 ,乙基和式-C(CH 3)= CHR 5基团,其中R 5选自甲基,乙基和异丙基。