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    • 51. 发明申请
    • Outer rotor type hybrid stepping motor
    • 外转子式混合式步进电机
    • US20050067903A1
    • 2005-03-31
    • US10921115
    • 2004-08-19
    • Yuji EnomotoKenji MiyataYasuaki MotegiShoji Ohiwa
    • Yuji EnomotoKenji MiyataYasuaki MotegiShoji Ohiwa
    • H02K37/06H02K37/18H02K37/00
    • H02K37/18
    • In an outer rotor type hybrid stepping motor, when assuming that a teeth pitch is τ and a tooth width is Tw (tooth width ratio is Tw/τ) and in case of Tw/τ=0.3, the maximum torque can be obtained when a gap average magnetic flux density Bg is 1.6-1.8T, which is determined by dividing a total magnetic flux amount calculated from residual magnetic flux density Br of a magnet and surface area A of the magnet with small teeth surface area At of a rotor. Since the small teeth surface area At can be expressed by a product of the small tooth width Tw, number of small teeth Nr and a lamination thickness L, an optimum lamination thickness can be determined with only one solution. Further, in case of different teeth width ratios, the following gap magnetic flux densities Bg assume optimum values, in that when Tw/τ=0.35, 1.4-1.5T, when Tw/τ=0.4, 1.2-1.4T, when Tw/τ=0.45, 1.0-1.2T are set. When assuming that a cross sectional area in the axial direction of the magnet is A, a gap portion diameter is D, the lamination thickness of the stator core in the axial direction is L and a residual magnetic flux density of the magnet is Br, the lamination thickness in the axial direction L and the residual magnetic flux density Br is determined according to the following equation under a condition that a coefficient k in the following equation is kept in a range of 0.56-0.66(1/T) D×L/A=k×Br [k=1/(π×Bg×Tw/τ)]. Whereby, an outer rotor type hybrid stepping motor which uses new indexes for optimum design parameters of the motor and which realizes size reduction, a high output and a high resolution is provided.
    • 在外转子型混合式步进电动机中,当假设齿距为τ,齿宽为Tw(齿宽比为Tw / tau)时,在Tw /τ= 0.3的情况下,当a 间隙平均磁通密度Bg为1.6-1.8T,其通过将由磁体的残留磁通密度Br计算出的总磁通量除以磁体的表面积A与转子的小齿表面积At来确定。 由于小齿表面积At可以由小齿宽Tw,小齿数Nr和层叠厚度L的乘积表示,所以可以仅用一个解决方案来确定最佳层压厚度。 此外,在不同齿宽比的情况下,以下间隙磁通密度Bg呈现最佳值,因为当Tw /τ= 0.35,1.4-1.5T时,当Tw /τ= 0.4,1.2-1.4T时,当Tw / tau = 0.45,1.0-1.2T。 当假设磁体轴向的横截面积为A时,间隙部分直径为D,定子芯在轴向上的层压厚度为L,磁体的剩余磁通密度为Br, 在以下等式中的系数k保持在0.56-0.66(1 / T)的范围内的条件下,根据下式确定轴向方向L和剩余磁通密度Br的层叠厚度DxL / A = kxBr [k = 1 /(pixBgxTw / tau)]。 由此,提供了一种外转子型混合式步进电动机,其使用新的指标来实现电动机的最佳设计参数,并实现了尺寸减小,高输出和高分辨率。
    • 52. 发明授权
    • Video image edit device
    • 视频图像编辑设备
    • US06731862B1
    • 2004-05-04
    • US09692142
    • 2000-10-20
    • Sunao KawaiKenji MiyataRyuji YamadaHideaki TeshimaKazuma AokiNorihisa FujiiYoshihiko Horibe
    • Sunao KawaiKenji MiyataRyuji YamadaHideaki TeshimaKazuma AokiNorihisa FujiiYoshihiko Horibe
    • H04N591
    • H04N5/765G11B27/032G11B27/034G11B27/11G11B27/28G11B2220/2562G11B2220/65H04N5/775H04N5/78263
    • A video image edit device for editing video image contents recorded on a video tape. The video tape is rewound to its leading end and a start point time code and a maximum video image content period are stored in a RAM. Then, a video reproduction is started and a time code and time information for a video image content are retrieved. A difference between the present time and a precedent time is compared with a predetermined period to detect discontinuity of the video image content. If discontinuity cannot be detected, judgment is made as to whether or not a difference between the present time code and a start point time code exceeds the maximum video image content period to determine a subdivision point. If discontinuity is detected, or if the difference exceeds the maximum video image content period, a present end point time code and next start point time code are stored for again detecting the discontinuity or judging the next subdivision point.
    • 一种用于编辑记录在录像带上的视频图像内容的视频图像编辑装置。 视频磁带倒转到其前端,起始点时间码和最大视频图像内容周期存储在RAM中。 然后,开始视频再现,并且检索视频图像内容的时间码和时间信息。 将当前时间和先前时间之间的差与预定时间进行比较,以检测视频图像内容的不连续性。 如果不能检测到不连续性,则判定当前时间码与起点时间码之间的差是否超过最大视频内容周期以确定细分点。 如果检测到不连续性,或者如果差异超过最大视频内容周期,则存储当前终点时间码和下一个开始时间码,以再次检测不连续或判断下一个细分点。
    • 57. 发明授权
    • Lateral field controlled thyristor
    • 横向场控晶闸管
    • US4258377A
    • 1981-03-24
    • US19567
    • 1979-03-12
    • Kenji MiyataTatsuya KameiMasahiro Okamura
    • Kenji MiyataTatsuya KameiMasahiro Okamura
    • H01L29/10H01L29/74H01L29/744
    • H01L29/102H01L29/7436H01L29/744
    • An improvement in a semiconductor switching device is disclosed which comprises a semiconductor substrate of a first conductivity type, an anode region of a second conductivity type formed in the semiconductor substrate adjacent to a major surface thereof, a gate region of the second conductivity type formed a distance from the anode region, and a cathode region of the first conductivity type formed in the gate region and having a higher impurity concentration than the semiconductor substrate. A channel region is formed immediately below the cathode region thereby to directly contact the cathode region to the semiconductor substrate. A current path extending from the anode region to the cathode region through the semiconductor substrate is interrupted by a depletion layer produced in the vicinity of the channel region upon application of a reverse bias across a pn-junction formed between the gate region and the cathode region. When no reverse bias voltage is applied, the anode region, the semiconductor substrate and the gate region cooperate to function as a thyristor. The semiconductor switching device has a high dv/dt capability and is easily implemented in integrated circuits.
    • 公开了一种半导体开关器件的改进,其包括第一导电类型的半导体衬底,形成在与其主表面相邻的半导体衬底中的第二导电类型的阳极区域,第二导电类型的栅极区形成为 与阳极区域的距离以及形成在栅极区域中并且具有比半导体衬底更高的杂质浓度的第一导电类型的阴极区域。 沟道区形成在阴极区的正下方,从而直接接触阴极区到半导体衬底。 通过在栅极区域和阴极区域之间形成的pn结上施加反向偏压,在由沟道区域附近产生的耗尽层将中断通过半导体衬底从阳极区延伸到阴极区的电流路径 。 当不施加反向偏置电压时,阳极区域,半导体衬底和栅极区域配合作为晶闸管。 半导体开关器件具有高的dv / dt能力,并且易于在集成电路中实现。
    • 58. 发明授权
    • Process for preparation of semiconductor devices utilizing a two-step
polycrystalline deposition technique to form a diffusion source
    • 使用两步多晶沉积技术制备半导体器件以形成扩散源的方法
    • US4164436A
    • 1979-08-14
    • US925792
    • 1978-07-18
    • Mitsuru UraKenji MiyataTakaya SuzukiTakuzo Ogawa
    • Mitsuru UraKenji MiyataTakaya SuzukiTakuzo Ogawa
    • H01L21/22H01L21/205H01L21/225H01L29/04H01L29/08H01L29/866
    • H01L29/866H01L21/02381H01L21/0245H01L21/02532H01L21/02576H01L21/02579H01L21/0262H01L21/2257H01L29/04H01L29/0834Y10S148/122Y10S438/983
    • A semiconductor substrate having a single crystal semiconductor layer of one conductivity type exposed to the surface thereof is maintained at a temperature lower than the temperature at which the semiconductors is precipitated from the gas phase. In this state, a gas of a starting material of a semiconductor, a gas containing impurities capable of forming a semiconductor of the other conductivity type and a carrier gas therefore are fed onto the semiconductor substrate. Then, the semiconductor substrate is heated to form an amorphous or polycrystalline semiconductor layer of the other conductivity type on the semiconductor substrate. Simultaneously, the impurities of the other conductivity type are diffused from the amorphous or polycrystal semiconductor layer into the substrate which has a single crystal semiconductor layer of one conductivity type, to form a single crystal semiconductor layer having a p-n junction just below the amorphous or polycrystal semiconductor layer between the amorphous or polycrystalline semiconductor layer and the single crystal semiconductor layer of one conductivity type.In a p-n junction to be formed according to this process, the distribution of the concentration of impurities can be controlled precisely, and the step-like distribution of the concentration of impurities can be attained very well.
    • 具有暴露于其表面的一种导电类型的单晶半导体层的半导体衬底保持在比从气相中半导体析出的温度低的温度。 在这种状态下,半导体衬底上的半导体原料气体,含能够形成其它导电类型的半导体的气体和载气的气体被馈送到半导体衬底上。 然后,半导体衬底被加热以在半导体衬底上形成另一导电类型的非晶或多晶半导体层。 同时,其他导电类型的杂质从非晶或多晶半导体层扩散到具有一种导电类型的单晶半导体层的衬底中,以形成具有刚好在无定形或多晶的下面的pn结的单晶半导体层 非晶或多晶半导体层与一种导电类型的单晶半导体层之间的半导体层。