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1. 发明专利

JP2006109039A Class-d amplifier 审中-公开
标题翻译： CLASS-D放大器
公开(公告)号：JP2006109039A
公开(公告)日：2006-04-20
申请号：JP2004292265
申请日：2004-10-05
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TSUJI MASAYUKI , TAURA KENICHI , NAKADA TAKESHI , ISHIDA MASAYUKI
IPC分类号： H03F3/217 , H03K7/08
摘要： PROBLEM TO BE SOLVED: To provide a class-D amplifier in which a peak level of harmonic noise derived from a switching operation in a power switch and electromagnetic wave interference is suppressed.
SOLUTION: A random number triangular wave generation means 12 generates triangular waves having periods which change like random numbers and a comparison means 13 generates a PWM signal based on the triangular waves generated by an analog sound signal AI and the triangular waves generated by the random number triangular wave generation means 12. A power switch means 4 receives the PWM signal generated by the comparison means 13 and performs power amplification. A filter means 5 performs PWM demodulation using output of the power switch means 4 as input.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种D类放大器，其中抑制了从功率开关中的开关操作导出的谐波噪声的峰值电平和电磁波干扰。解决方案：随机数三角波产生装置12产生具有像随机数变化的周期的三角波，并且比较装置13基于由模拟声音信号AI产生的三角波和由模拟声音信号AI产生的三角波产生PWM信号随机数三角波产生装置12.电源开关装置4接收由比较装置13产生的PWM信号并执行功率放大。滤波器装置5使用电源开关装置4的输出作为输入进行PWM解调。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005311472A Class d amplifier 有权
标题翻译： D类放大器
公开(公告)号：JP2005311472A
公开(公告)日：2005-11-04
申请号：JP2004122174
申请日：2004-04-16
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TSUJI MASAYUKI , TAURA KENICHI , NAKADA TAKESHI , ISHIDA MASAYUKI
IPC分类号： H03M3/02 , H03F1/26 , H03F3/217
摘要： PROBLEM TO BE SOLVED: To provide a class D amplifier for reducing electromagnetic wave disturbance which appears relative to harmonics of a PWM carrier frequency, and wherein a level of the center frequency of the harmonics appears higher in particular as a modulation factor of a sound signal is lower.
SOLUTION: A digital sound signal is given to a sound signal input terminal 1, a delta sigma modulation section 2 applies delta sigma modulation to the signal and thereafter the modulated signal is given to a PWM signal generating section 3. A sound out-band signal is given to the PWM signal generating section 3 from a modulation signal input terminal 7, and the PWM signal generating section 3 generates a PWM signal modulated by the sound out-band signal. The PWM signal is demodulated by a power switch 4 and a filter 5, and a sound signal is outputted from a sound signal output terminal 6.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于减少相对于PWM载波频率的谐波出现的电磁波干扰的D类放大器，其中谐波的中心频率的电平特别显现为更高的调制因数声音信号较低。解决方案：数字声音信号被提供给声音信号输入端1，ΔΣ调制部分2对该信号施加ΔΣ调制，此后将调制信号提供给PWM信号产生部分3.声音输出带状信号从调制信号输入端子7被提供给PWM信号产生部分3，并且PWM信号产生部分3产生由声音带外信号调制的PWM信号。 PWM信号由电源开关4和滤波器5解调，声音信号从声音信号输出端子6输出。（C）2006，JPO＆NCIPI

3. 发明专利

JP2005229306A Class d amplifier 有权
标题翻译： D类放大器
公开(公告)号：JP2005229306A
公开(公告)日：2005-08-25
申请号：JP2004035522
申请日：2004-02-12
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TSUJI MASAYUKI , TAURA KENICHI , NAKADA TAKESHI , ISHIDA MASAYUKI
IPC分类号： H03F3/217 , H03F1/26
摘要： PROBLEM TO BE SOLVED: To provide a class D amplifier in which electromagnetic interference is suppressed by reducing the peak level of harmonic noise incident to switching operation of a power switch in the class D amplifier.
SOLUTION: A voice out-band signal 2 is entered to the frequency conversion circuit 3a in the PWM signal generating section 3 of a class D amplifier to obtain a rectangular wave signal where a PWM reference signal 1 is frequency modulated by the voice out-band signal 2. A triangular wave generating circuit 3b generates a triangular wave signal frequency modulated by the voice out-band signal 2 using the rectangular wave signal. The triangular wave signal and an analog voice signal are entered to a comparison circuit 3c and a PWM signal is obtained by frequency modulating a PWM carrier frequency by the voice out-band signal 2. After power amplification is performed by a power switch 6, a PWM demodulation output 8 is obtained from a filter 7.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种D类放大器，其中通过降低入射到D类放大器中的电源开关的开关操作的谐波噪声的峰值电平来抑制电磁干扰。解决方案：语音带外信号2被输入到D类放大器的PWM信号产生部分3中的频率转换电路3a，以获得其中PWM参考信号1被语音频率调制的矩形波信号三角波产生电路3b使用矩形波信号产生由语音带外信号2调制的三角波信号。三角波信号和模拟语音信号被输入到比较电路3c，并且通过语音带外信号2对PWM载波频率进行频率调制来获得PWM信号。在由功率开关6执行功率放大后， PWM解调输出8从滤波器7获得。（C）2005，JPO和NCIPI

4. 发明专利

JP2004128958A Class d amplifier 有权
公开(公告)号：JP2004128958A
公开(公告)日：2004-04-22
申请号：JP2002291195
申请日：2002-10-03
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TAURA KENICHI , TSUJI MASAYUKI , ISHIDA MASAYUKI , NAKADA TAKESHI
IPC分类号： H03F3/217
摘要： PROBLEM TO BE SOLVED: To provide a class D amplifier provided with a correction circuit capable of correcting the distortion, that results from distortionof a sound signal which occurs in a power switching means of the class D amplifier, with a simple configuration and with high accuracy. SOLUTION: A first integrating means 21 and a second integrating means 24 integrate a pulse modulation signal ei outputted from a pulse modulating means 1 and a feedback signal ef including distortion that occurs in the power switching means 3, respectively. The pulse modulation signal ei and the feedback signal ef are respectively inputted to an input part of a comparator 25 (or 29) to generate a correction signal Vc. COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2001036988A SPEAKER DEVICE 失效
公开(公告)号：JP2001036988A
公开(公告)日：2001-02-09
申请号：JP20682599
申请日：1999-07-21
申请人： MITSUBISHI ELECTRIC CORP , FOSTER ELECTRIC CO LTD
发明人： YAMADA TERUO , NAKADA TAKESHI , MORI SEIJI , IWASAKI SHUNICHI
IPC分类号： H04R9/02 , H04R1/02
摘要： PROBLEM TO BE SOLVED: To obtain an inexpensive speaker whose sound quality is excellent by improving the deterioration of workability at the time of producing a speaker frame by fine pulp mold. SOLUTION: In this speaker device, a pulp mold product 25 is manufactured by fine pulp mold, and heated by a local heating part 32 with a male carbonized metallic mold 30 and a female carbonized metallic mold 31 sandwiched so that the part to be sheared such as the mounting hole of the product 25 can be carbonized, and the carbonized part is sheared so that a speaker frame can be completed. Thus, the sheared part is strengthened, and the fine shared face is obtained so that the highly precise frame can be obtained. Also, the workability is made satisfactory so that the frame with small tool consumption and high mass-productivity can be obtained.

6. 发明专利

JP2014170835A Heat radiation structure of heating component and audio device using the same 有权
标题翻译：加热组件的热辐射结构和使用它的音频设备
公开(公告)号：JP2014170835A
公开(公告)日：2014-09-18
申请号：JP2013041869
申请日：2013-03-04
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAKADA TAKESHI , KANAMARU MASAHIRO , TERAMOTO KOHEI
IPC分类号： H05K1/02 , H01L23/36 , H05K7/20
摘要： PROBLEM TO BE SOLVED: To provide a heat radiation structure of a heating component which efficiently radiates heat generated in the heating component, and to provide an audio device using the heat radiation structure of the heating component.SOLUTION: A region 2a, in which a heating component 1 is surface-mounted, is used as a region for conducting heat in a thickness direction of a substrate 2. Thermal vias 5 are placed in the region for conducting the heat in the thickness direction of the substrate 2 in higher density than a region for conducting the heat in a plane direction along a pattern of the substrate 2. The heat generated in the heating component 1 is conducted from the heating component 1 in the thickness direction and the plane direction of the multilayer substrate 2 through the thermal vias 5 to be guided to heat conduction rubber 4. Then, the heat is radiated to a heat sink 3 through the heat conduction rubber 4.
摘要翻译：要解决的问题：提供一种加热部件的散热结构，其有效地散发在加热部件中产生的热量，并且提供使用加热部件的散热结构的音频装置。解决方案：区域2a，其中加热部件1被表面安装，被用作在基板2的厚度方向上传导热的区域。热通孔5被放置在用于在基板2的厚度方向上以比区域，用于沿着基板2的图案在平面方向上传导热量。在加热部件1中产生的热量通过热通孔5从多层基板2的厚度方向和多个基板2的平面方向从加热部件1传导被引导至导热橡胶4.然后，通过导热橡胶4将热量照射到散热器3。

7. 发明专利

JP2013258598A Bias circuit 有权
标题翻译：偏置电路
公开(公告)号：JP2013258598A
公开(公告)日：2013-12-26
申请号：JP2012133887
申请日：2012-06-13
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAKADA TAKESHI , TERAMOTO KOHEI
IPC分类号： H03F1/30 , H03F3/21
摘要： PROBLEM TO BE SOLVED: To provide a bias circuit that implements appropriate bias temperature compensation in a simple configuration.SOLUTION: According to a relationship: ΔT3-ΔT1=α(ΔT2-ΔT1), where ΔT1 is a change in an atmospheric temperature T1 in a casing housing the bias circuit, ΔT2 is a change in a package surface temperature T2 of output stage transistors Q3, Q4, ΔT3 is a change in an internal pellet temperature T3 of the output stage transistors Q3, Q4, and α (α>1) is a constant determined by a thermal resistance of the output stage transistors from an internal pellet to a package surface, the change ΔT3 in the internal pellet temperature is estimated in adjusting a bias voltage.
摘要翻译：要解决的问题：提供一种在简单配置中实现适当偏置温度补偿的偏置电路。解决方案：根据以下关系：＆Dgr; T3-＆Dgr; T1 =α（＆Dgr; T2-＆Dgr; T1），其中＆Dgr; T1是容纳偏置电路的壳体的大气温度T1的变化，T2是输出级晶体管Q3，Q4，Dgr的封装表面温度T2的变化; T3是内部晶粒温度T3的变化输出级晶体管Q3，Q4和α（α> 1）是从内部颗粒到封装表面的输出级晶体管的热阻确定的常数，内部颗粒温度的变化＆Dgr; T3被估计为调整偏置电压。

8. 发明专利

JP2005182233A Monitoring system and detection means for the system 有权
标题翻译：监控系统和系统的检测手段
公开(公告)号：JP2005182233A
公开(公告)日：2005-07-07
申请号：JP2003418951
申请日：2003-12-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAKAGUCHI TOMOYUKI , NAKADA TAKESHI
IPC分类号： G01V3/12 , G01S13/50 , G01V8/10 , G08B15/00 , G08B25/04
摘要： PROBLEM TO BE SOLVED: To solve the following problem: because detection and sensing means are used so as to detect a trespasser and specify a position, installation of a larger number of detection and sensing means is required as a monitoring area becomes broader, so as to require a lot of labor and time for their conveyance or laying of wiring. SOLUTION: This monitoring system has: an action inhibition means installed in the monitoring area, inhibiting action of the trespasser by an instruction from a management device; a fist situation grasp means and a second situation grasp means installed in different places on the periphery of the monitoring area, grasping situations of nearly same areas; a signal processor calculating the position of the intruder; and the management device receiving the position of the trespasser from the signal processor, deciding trespass of the trespasser into an effective range of the action inhibition means, and sending an operation instruction to the action inhibition means. The situation grasp means comprises an image pickup means, a self-position grasp means, an inspection direction grasp means for the image pickup means, and a target direction calculation means calculating on the trespasser. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了解决以下问题：由于使用检测和感测装置来检测侵入者并指定位置，所以需要安装更多的检测和感测装置，因为监视区域变得更宽，因此需要大量的劳动和时间来运输或布线。解决方案：该监控系统具有：安装在监控区域的动作抑制装置，通过管理装置的指令，防止侵入者的动作; 掌握情况把握手段和第二种情况把握手段安装在监控区周边的不同地方，掌握几乎相同的地区情况; 信号处理器计算入侵者的位置; 所述管理装置从所述信号处理器接收所述侵入者的位置，将所述侵入者的侵入判定为所述动作禁止装置的有效范围，并向所述动作禁止装置发送操作指示。情况抓握装置包括图像拾取装置，自动抓握装置，用于图像拾取装置的检查方向抓取装置，以及在侵入者上计算的目标方向计算装置。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2003037887A Acoustic controller and acoustic system 审中-公开
标题翻译：声控器和声音系统
公开(公告)号：JP2003037887A
公开(公告)日：2003-02-07
申请号：JP2001224854
申请日：2001-07-25
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAKADA TAKESHI , YAMADA TERUO , FUJIWARA SUSUMU , OKINO NOBORU
IPC分类号： H04R3/04 , H04R3/00 , H04R9/02
CPC分类号： H04R3/002
摘要： PROBLEM TO BE SOLVED: To provide a compact, light, and inexpensive speaker system capable of realizing sufficient low sound reproduction. SOLUTION: This MFB signal controller 11 is provided with a vibration displacement calculating part 12 for generating a vibration displacement detection signal according to the input of a vibration detection signal to be obtained from a coil 7 for detecting the vibration of a speaker unit, a vibration speed calculating part 13 for generating a vibration speed detection signal according to the input of the vibration detection signal, a processing signal generating part 14 for generating a feedback signal according to the input of the vibration displacement detection signal and the vibration speed detection signal, and an adder 15 for synthesizing the feedback signal with an acoustic signal to be outputted from an acoustic reproduction device 106, and for inputting it to a voice coil 6 for driving the speaker unit.
摘要翻译：要解决的问题：提供能够实现足够低的声音再现的紧凑，轻便和便宜的扬声器系统。解决方案：该MFB信号控制器11设置有振动位移计算部分12，用于根据从用于检测扬声器单元的振动的线圈7获得的振动检测信号的输入产生振动位移检测信号，振动速度计算部13，用于根据振动检测信号的输入产生振动速度检测信号;处理信号生成部14，用于根据振动位移检测信号和振动速度检测信号的输入产生反馈信号;以及用于将反馈信号与从声学再现装置106输出的声学信号合成并将其输入到用于驱动扬声器单元的音圈6的加法器15。

10. 发明专利

JP2000183918A RADIO COMMUNICATION DEVICE 失效
公开(公告)号：JP2000183918A
公开(公告)日：2000-06-30
申请号：JP36235398
申请日：1998-12-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKADA TAKESHI
IPC分类号： H04B1/3822 , H04B1/40 , H04L12/28 , H04L12/70 , H04W4/04 , H04W28/04 , H04W52/10 , H04W52/24 , H04W72/08 , H04W84/12 , H04L12/56
摘要： PROBLEM TO BE SOLVED: To use voice communication and data communication in common by enabling switching communication without performing packet multiplexing with voice by applying a carrier sense processing when one channel of radio communication device is used by plural pieces of the radio communication device. SOLUTION: When a carrier has been received by a receiving part 12, a signal is demodulated by a modulating and demodulating part 11, after that, received data are analyzed and it is decided whether it is a voice signal or not at a voice data switching part 10. When the data are the voice signal, it is outputted to a voice CODEC part 9, is decoded and the voice signal is outputted from an interface part 8. When the data are not the voice signal, the destination of the data is confirmed whether it is the present terminal or not by a packet assembling and disassembling part 17. When the destination is the present terminal, the data are fetched and it is not the present terminal, the data are cancelled. In addition, error detection is performed and the data are decided whether it is normal or not. A flag of the received data is analyzed and presence/absence of a reception confirmation request is decided by the packet assembling and disassembling part 17.

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