公开(公告)号：US07595702B2

公开(公告)日：2009-09-29

申请号：US11822369

申请日：2007-07-05

申请人： Masakatsu Maeda

发明人： Masakatsu Maeda

IPC分类号： H04L27/20

CPC分类号： H03C5/00 ,  H03C3/08

摘要： A modulation apparatus 24 comprises a monitoring section 207 operable to monitor information about a control voltage applied to a VCO 201 as control voltage information, during any period, when a low-frequency signal having a frequency within a loop band of a PLL circuit is input at least before an LPF 209, a correction table storing section 206 operable to associate the control voltage information monitored by the monitoring section 207 as information about a control voltage after correction with information about a control voltage before correction, and store the associated information as a correction table, and a correction section 204 operable to correct a control voltage applied to the VCO 201 based on the correction table stored in the correction table storing section.

公开(公告)号：US20080284309A1

公开(公告)日：2008-11-20

申请号：US11630630

申请日：2005-06-20

申请人： Yasuyuki Yamamoto ,  Yukihiro Kanechika ,  Masakatsu Maeda

发明人： Yasuyuki Yamamoto ,  Yukihiro Kanechika ,  Masakatsu Maeda

IPC分类号： H01J1/62 ,  B32B3/26 ,  B05D3/00 ,  C04B35/64

CPC分类号： C04B35/64 ,  C04B35/581 ,  C04B35/62625 ,  C04B35/6264 ,  C04B35/6303 ,  C04B2235/3205 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/652 ,  C04B2235/656 ,  C04B2235/658 ,  C04B2235/77 ,  C04B2235/85 ,  C04B2235/9607 ,  C04B2235/9646 ,  Y10T428/249921 ,  Y10T428/268

摘要： An insulating material high both in thermal conductivity and light reflectance, and a submount high in heat radiatability for mounting an LED element thereon, capable of raising a light utilization factor and quickly radiating heat generated from the element. For example, used as a substrate material of a submount is a nitride sintered body having a reflectance of light in the wavelength region of from 350 nm to 800 nm of 50% or more and a reflectance of light with a wavelength of 700 nm of 60% or more, obtained by sintering a preform consisting of a composition containing 100 parts by mass of aluminum nitride powder and 0.5 to 10 parts by mass of a compound containing an alkaline earth metal such as 3CaO×Al2O3 in an inert atmosphere containing a specific quantity of carbon vapor, or by burning a coat of a nitride paste applied on a base substrate having a heat resistance at a predetermined temperature.

摘要翻译： 高导热性和光反射率高的绝缘材料，以及用于安装其上的LED元件的高散热性的基座，能够提高光利用率并快速散发由元件产生的热量。 例如，用作基座的基板材料是具有350nm至800nm的波长区域中的光的反射率为50％以上的氮化物烧结体，波长为700nm的光的反射率为60nm 通过在含有特定量的碳的惰性气氛中烧结由含有100质量份氮化铝粉末的组合物和0.5〜10质量份含有碱土金属如3CaO x Al 2 O 3的化合物组成的预成型体而获得的％ 或者通过将涂敷在具有预定温度下的耐热性的基底基板上的氮化物浆料的一层烧成。

公开(公告)号：US20080131673A1

公开(公告)日：2008-06-05

申请号：US11793185

申请日：2005-12-13

申请人： Yasuyuki Yamamoto ,  Masakatsu Maeda ,  Kunihiro Gotoh

发明人： Yasuyuki Yamamoto ,  Masakatsu Maeda ,  Kunihiro Gotoh

IPC分类号： C04B41/90 ,  H05K3/12

CPC分类号： C04B41/52 ,  C04B41/90 ,  H05K1/0306 ,  H05K1/092 ,  H05K3/1291 ,  H05K3/4667 ,  H05K2203/1126 ,  Y10T428/24926 ,  Y10T428/24942 ,  Y10T428/26

摘要： The process for producing a metallized ceramic substrate of the present invention comprises a step (A) of preparing a raw material substrate comprising a ceramic substrate which may have on its surface a conductive layer or a conductor paste layer, a step (B) of preparing a metallized ceramic substrate precursor, said step (B) comprising a step of forming a ceramic paste layer on the raw material substrate and a step of forming a conductive paste layer on the ceramic paste layer, and a step (C) of firing the metallized ceramic substrate precursor obtained in the previous step. In the step (B), formation of a ceramic paste layer and formation of a conductive paste layer may be alternately repeated plural times. According to the present invention, running or spreading of the conductive paste is prevented, and a metallized ceramic substrate which has a high degree of freedom of wiring design and high reliability and has a fine metallization pattern can be produced.

摘要翻译： 本发明的金属化陶瓷基板的制造方法包括制备包括陶瓷基板的原料基板的工序（A），该陶瓷基板在其表面上可以具有导电层或导体糊层，制备步骤（B） 金属化陶瓷基板前体，所述工序（B）包括在所述原料基板上形成陶瓷浆料层的步骤和在所述陶瓷浆料层上形成导电浆料层的工序，和对所述金属化陶瓷基板前体进行烧成的工序 在前一步骤中获得的陶瓷衬底前体。 在步骤（B）中，陶瓷浆料层的形成和导电糊层的形成可以交替重复多次。 根据本发明，能够防止导电性糊料的运行或扩散，可以制造具有高自由度的布线设计和高可靠性且具有精细金属化图案的金属化陶瓷基板。

公开(公告)号：US20070297530A1

公开(公告)日：2007-12-27

申请号：US11812730

申请日：2007-06-21

申请人： Masakatsu Maeda ,  Taichi Ikedo

发明人： Masakatsu Maeda ,  Taichi Ikedo

IPC分类号： H04L27/00

CPC分类号： H04L27/361 ,  H03F1/025 ,  H04B1/0475 ,  H04L25/06

摘要： Provided is a transmission circuit operating with high efficiency and low distortion. An amplitude and phase extraction section 11 extracts amplitude data and phase data from input data. A phase modulation section 12 phase-modulates the phase data to output a resultant signal as a phase-modulated signal. An amplifier section 13 amplifies the phase-modulated signal to output a resultant signal as a transmission signal. An amplitude control section 15 supplies, to the amplifier section 13, a voltage controlled in accordance with an AC component represented by a fluctuation component of the amplitude data and a DC component represented by an average value level of the fluctuation component of the amplitude data.

摘要翻译： 提供了以高效率和低失真运行的传输电路。 幅度和相位提取部分11从输入数据中提取幅度数据和相位数据。 相位调制部12对相位数据进行相位调制，输出合成信号作为相位调制信号。 放大器部13对相位调制信号进行放大，输出合成信号作为发送信号。 振幅控制部分15向放大器部分13提供根据由振幅数据的波动分量表示的AC分量和由振幅数据的波动分量的平均值电平表示的DC分量控制的电压。

公开(公告)号：US20070252523A1

公开(公告)日：2007-11-01

申请号：US11660476

申请日：2005-08-16

申请人： Masakatsu Maeda ,  Yasuyuki Yamamoto

发明人： Masakatsu Maeda ,  Yasuyuki Yamamoto

IPC分类号： H01J1/62

CPC分类号： C04B41/009 ,  C04B41/5031 ,  C04B41/5063 ,  C04B41/5064 ,  C04B41/87 ,  C04B2111/80 ,  H01L33/60 ,  H01L33/641 ,  H01L2224/13 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/73265 ,  H05K1/0274 ,  H05K1/0306 ,  H05K1/181 ,  H05K2201/017 ,  H05K2201/10106 ,  H05K2201/2054 ,  C04B41/0072 ,  C04B41/4556 ,  C04B41/4539 ,  C04B41/5045 ,  C04B35/58 ,  C04B35/581 ,  H01L2924/00014 ,  H01L2924/00

摘要： A ceramic substrate for mounting a light emitting element. The ceramic substrate has a placement surface for placing a light emitting element having an electrode; and an electrode electrically-connected with the electrode of the light emitting element, wherein the ceramic substrate comprises a substrate body consisting of a nitride ceramics; and a coat layer coating at least a part of a surface of the substrate body and consisting of a ceramics different from the nitride ceramics forming the substrate body; and the coat layer has an optical reflectance of 50% or more for any light having a wavelength of from 300 to 800 nm, which can increase a luminance of the light emitting element by reflecting the light emitted from the element efficiently with certainty, and which has a high heat radiation property; and a manufacturing method therefor.

摘要翻译： 一种用于安装发光元件的陶瓷基板。 陶瓷基板具有用于放置具有电极的发光元件的放置面; 以及与所述发光元件的电极电连接的电极，其中，所述陶瓷基板包括由氮化物陶瓷构成的基板主体; 以及涂覆在所述基板主体的表面的至少一部分上并由与形成所述基板主体的所述氮化物陶瓷不同的陶瓷构成的涂层; 并且涂层对于具有300至800nm波长的任何光都具有50％或更高的光学反射率，这可以通过有效地反映从元件发射的光来增加发光元件的亮度，并且其中 具有较高的散热性能; 及其制造方法。

公开(公告)号：US20070093217A1

公开(公告)日：2007-04-26

申请号：US11583176

申请日：2006-10-19

申请人： Masakatsu Maeda ,  Kaoru Ishida

发明人： Masakatsu Maeda ,  Kaoru Ishida

IPC分类号： H04B1/40 ,  H04B1/04 ,  H04B7/00

CPC分类号： H03C3/0925 ,  H03C3/0941 ,  H03C3/095 ,  H03C3/0966 ,  H03C3/0983

摘要： Provided is an FM modulator capable of measuring an f-V characteristic of a voltage controlled oscillator in a reduced time period. Therefore, a characteristic measurement time control section 110 notifies a correction section 108 of a time at which a measurement of the f-V characteristic of a voltage controlled oscillator 103 is to be started and a time at which the measurement of the f-V characteristic of the voltage controlled oscillator 103 is to be ended while a carrier wave frequency is being changed to a predetermined frequency. Thus, the correction section 108 is capable of measuring the f-V characteristic of the voltage controlled oscillator 103 in a reduced time period.

摘要翻译： 提供了一种能够在缩短的时间周期内测量压控振荡器的f-V特性的FM调制器。 因此，特性测量时间控制部分110向校正部分108通知压控振荡器103的fV特性的测量开始的时间和控制的电压的fV特性的测量的时间 当载波频率变为预定频率时，振荡器103将结束。 因此，校正部分108能够在缩短的时间周期内测量压控振荡器103的f-V特性。

公开(公告)号：US07110486B2

公开(公告)日：2006-09-19

申请号：US11333245

申请日：2006-01-18

申请人： Hisashi Adachi ,  Toshifumi Nakatani ,  Hiroaki Kosugi ,  Masakatsu Maeda ,  Shunsuke Hirano

发明人： Hisashi Adachi ,  Toshifumi Nakatani ,  Hiroaki Kosugi ,  Masakatsu Maeda ,  Shunsuke Hirano

IPC分类号： H03D3/24 ,  H03L7/00 ,  H03C3/06

CPC分类号： H03L7/1976

摘要： A fraction part control circuit of a frequency synthesizer apparatus including a PLL circuit is of a plural-n-th-order delta-sigma modulator circuit for controlling a fraction part of a number of frequency division to a variable frequency divider of the PLL circuit. An adder adds data of the fraction part to an output data from a multiplier and outputs the resultant data to a quantizer through a second-order integrator. The quantizer quantizes input data with a quantization step and outputs the quantized data to the multiplier through a feedback circuit. The quantized data is used as data of the controlled fraction part. The multiplier multiplies data from the feedback circuit by the quantization step and outputs the resultant data to the adder. The fraction part control circuit periodically changes the data of the fraction part, thereby setting a frequency of an output signal from a VCO according to an average value of the period.

公开(公告)号：USD360509S

公开(公告)日：1995-07-18

申请号：US22452

申请日：1994-05-05

申请人： Masakatsu Maeda ,  Rika Tezuchi

设计人： Masakatsu Maeda ,  Rika Tezuchi