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45 条记录 (耗时 0.025 秒)

    DC-DC converter
    23.
    发明授权
    DC-DC converter 有权
    DC-DC转换器

    公开(公告)号：US07542308B2

    公开(公告)日：2009-06-02

    申请号：US11391606

    申请日：2006-03-27

    申请人： Tomoyasu Yamada

    发明人： Tomoyasu Yamada

    IPC分类号： H02M3/335 ,  H02M5/42 ,  H02M7/537 ,  H02M5/257 ,  G05F5/00

    CPC分类号： H02M1/36 ,  H02M3/33507 ,  H02M3/33523

    摘要： A DC-DC converter is provided with a control circuit 6 which comprises a drive signal generator 11 for producing on-off signals to a control terminal of a MOS-FET 3 in synchronization with pulse signals VOSC from an oscillator 10; an intermittent controller 12 for producing a control signal VC1 to drive signal generator 11 in response to the level of detection signal from an output voltage detector 5 to convert MOS-FET 3 to the intermittent operation during the light load period; and a power control circuit 16 for ceasing power supply VCC to oscillator 10 in response to control signal VC1 from intermittent controller 12 to stop production of pulse signal VOSC from oscillator 10 for the cessation term of MOS-FET 3 during the intermittent operation.

    摘要翻译： DC-DC转换器设置有控制电路6，该控制电路6包括驱动信号发生器11，用于与来自振荡器10的脉冲信号VOSC同步地向MOS-FET 3的控制端子产生通断信号; 间歇控制器12，用于响应于来自输出电压检测器5的检测信号的电平产生驱动信号发生器11的控制信号VC1，以将MOS-FET 3转换为轻负载期间的间歇操作; 以及功率控制电路16，用于响应于来自间歇控制器12的控制信号VC1停止对振荡器10的电源VCC，以在间歇操作期间停止从振荡器10产生用于MOS-FET 3的停止项的脉冲信号VOSC。

    Information recording apparatus including information attaching and generating device which generates group control information
    24.
    发明授权
    Information recording apparatus including information attaching and generating device which generates group control information 失效
    信息记录装置，包括生成组控制信息的信息附加生成装置

    公开(公告)号：US07200090B2

    公开(公告)日：2007-04-03

    申请号：US09990372

    申请日：2001-11-23

    申请人： Katsuaki Yamanoi ,  Tomoyasu Yamada ,  Takayuki Iijima ,  Shinichiro Abe ,  Yoji Shumura ,  Tomoko Miyagawa ,  Junichi Fukamachi

    发明人： Katsuaki Yamanoi ,  Tomoyasu Yamada ,  Takayuki Iijima ,  Shinichiro Abe ,  Yoji Shumura ,  Tomoko Miyagawa ,  Junichi Fukamachi

    IPC分类号： G11B21/08 ,  G06F12/00

    CPC分类号： G11B27/105 ,  G11B27/329 ,  G11B27/36

    摘要： When a detection device detects any kind of change regarding track recording after the start of the track recording, a grouping instruction is given to information attaching and generating device. Then, the information attaching and generating device attaches the same group name information to a group, in which a track where the recording has been started in an information recording medium to a track recorded at the point when the grouping instruction has been received are made to be the same group, and group control information is generated. Therefore, since the grouping is automatically performed by any kind of change regarding the track recording, a user can omit the operation that he/she performs the grouping by himself/herself, and thus the operation load of the user can be reduced.

    摘要翻译： 当检测装置在轨道记录开始之后检测到关于轨道记录的任何种类的改变时，给信息附加和产生装置给出分组指令。 然后，信息附加和生成装置将相同的组名称信息附加到其中在信息记录介质中已经开始记录的轨道到已经接收到分组指令时记录的轨道的组 成为同一个组，并生成组控制信息。 因此，由于通过关于轨道记录的任何种类的改变来自动执行分组，所以用户可以自己省略他/她执行分组的操作，从而可以减少用户的操作负担。

    Switching power source device
    25.
    发明申请
    Switching power source device 有权

    公开(公告)号：US20060109692A1

    公开(公告)日：2006-05-25

    申请号：US11284986

    申请日：2005-11-21

    申请人： Hiroshi Usui ,  Tomoyasu Yamada ,  Masaaki Shimada

    发明人： Hiroshi Usui ,  Tomoyasu Yamada ,  Masaaki Shimada

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33507

    摘要： The ON duration of an N channel MOS transistor is set based on a target voltage at a node between a resistor and a light receiving element of a photocoupler. A comparator compares the target voltage with a reference voltage at a node between a variable resistor and a resistor. A normal mode and a low frequency operation mode are switched from one to the other based on an output signal from the comparator. The resistance of the variable resistor becomes low when an input voltage from a power source is high. Even when the input voltage is high, therefore, the ON duration of the N channel MOS transistor at the transition between the normal mode and the low frequency operation mode becomes short. This reduces the switching energy in low frequency operation mode, thereby suppressing noise.

    Circuit for starting power source apparatus
    26.
    发明授权
    Circuit for starting power source apparatus 失效
    启动电源装置的电路

    公开(公告)号：US06980446B2

    公开(公告)日：2005-12-27

    申请号：US10503958

    申请日：2003-02-10

    申请人： Masaaki Simada ,  Tomoyasu Yamada

    发明人： Masaaki Simada ,  Tomoyasu Yamada

    IPC分类号： H02M1/00 ,  H02M1/36 ,  H02M1/42 ,  H02M7/517

    CPC分类号： H02M1/4208 ,  H02M1/36 ,  Y02B70/126

    摘要： When an AC power source (1) is turned on, energy is accumulated in a backup capacitor (63) by an energy supply circuit (64). An internal power source (65) supplies the energy accumulated in the capacitor (63) to a control unit (49). Thus, a power factor improvement circuit (40-2) operates. When the power factor improvement circuit (40-2) operates to output a predetermined voltage, an output voltage detection circuit (67) detects the voltage, and switches the internal power source (66) on. The turned on internal power source (66) supplies the energy in the capacitor (63) to a control unit (56) to operate a DC/DC conversion circuit (50). In this way, by operating the DC/DC conversion circuit (50) after operating the power factor improvement circuit (40-2), the capacity of the capacitor (63) can be reduced.

    摘要翻译： 当AC电源（1）接通时，由能量供给电路（64）将能量累积在备用电容器（63）中。 内部电源（65）将蓄积在电容器（63）中的能量提供给控制单元（49）。 因此，功率因数改善电路（40-2）工作。 当功率因数改善电路（40-2）工作以输出预定电压时，输出电压检测电路（67）检测电压，并切换内部电源（66）。 接通的内部电源（66）将电容器（63）中的能量提供给控制单元（56）以操作DC / DC转换电路（50）。 以这种方式，通过在操作功率因数改善电路（40-2）之后操作DC / DC转换电路（50），可以减小电容器（63）的容量。

    Dc-to-dc converter
    27.
    发明授权
    Dc-to-dc converter 有权

    公开(公告)号：US06972970B2

    公开(公告)日：2005-12-06

    申请号：US11071559

    申请日：2005-03-03

    申请人： Tomoyasu Yamada

    发明人： Tomoyasu Yamada

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523

    摘要： A transformer has a primary winding connected between a pair of dc input terminals via a switch, a secondary winding connected between a pair of output terminals via a first rectifying and smoothing circuit, and a tertiary winding connected to a second rectifying and smoothing circuit for feeding a switch control circuit. Included in the switch control circuit is a switch control pulse generator circuit whereby the switch is driven to provide a constant dc voltage at the output terminals. A mode selector circuit is connected to the switch control pulse generator circuit to cause the switch to be driven continuously under normal load, and at intervals under light load. The intermittent driving of the switch is suspended, and the switch driven continuously, in the event of a drop in the output voltage of the second rectifying and smoothing circuit to a predefined value during operation in light load mode.

    Switching dc power supply
    28.
    发明申请
    Switching dc power supply 有权
    开关直流电源

    公开(公告)号：US20050248965A1

    公开(公告)日：2005-11-10

    申请号：US11077434

    申请日：2005-03-10

    申请人： Tomoyasu Yamada ,  Mitsugu Furuya

    发明人： Tomoyasu Yamada ,  Mitsugu Furuya

    IPC分类号： H02M3/28 ,  H02M3/155 ,  H02M3/335

    CPC分类号： H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

    摘要： A transformer has a primary winding connected between a pair of dc input terminals via a voltage regulator switch, and a secondary winding connected between a pair of dc output terminals via a rectifying and smoothing circuit. The dc output voltage being applied to the load from the dc output terminals is detected, and the detector output voltage dually divided, to provide two feedback signals of different magnitudes. One of these feedback signals is used by a mode selector circuit to provide a mode select signal for causing the voltage regulator switch to be driven continuously under normal load, and at intervals under light load. Delivered to a conduction terminator circuit, the other feedback signal is thereby used to provide conduction terminator pulses for terminating conduction through the voltage regulator switch. A conduction initiator circuit responds both to the mode select signal and to a signal indicative of the conduction and nonconduction of the voltage regulator switch, to initiate conduction therethrough upon lapse of a preassigned length of time following the end of the previous conducting period. Although the nonconducting periods of the voltage regulator switch are thus fixed, its conducting periods are variable with the results of comparison of a switch current detect signal and the second recited feedback signal.

    摘要翻译： 变压器具有经由电压调节器开关连接在一对直流输入端子之间的初级绕组，以及经由整流和平滑电路连接在一对直流输出端子之间的次级绕组。 检测到从直流输出端子施加到负载的直流输出电压，并将检测器输出电压双重分频，以提供不同幅度的两个反馈信号。 这些反馈信号中的一个由模式选择器电路使用，以提供模式选择信号，以使得在正常负载下以及在轻负载下间隔地连续驱动电压调节器开关。 传送到传导终端电路，另一个反馈信号由此用于提供导通终止器脉冲，用于通过电压调节器开关终止传导。 导通启动器电路响应于模式选择信号和指示电压调节器开关的导通和非导通的信号，以在经过前一个传导周期结束之后的预先指定的时间长度时开始传导。 尽管电压调节器开关的非导通时段是固定的，但是其开关电流检测信号和第二个所述的反馈信号的比较结果可以改变其导通周期。

    Switching power supply for computer-driven displays or the like
    30.
    发明授权
    Switching power supply for computer-driven displays or the like 失效
    用于计算机驱动显示器的开关电源等

    公开(公告)号：US5793621A

    公开(公告)日：1998-08-11

    申请号：US812427

    申请日：1997-03-06

    申请人： Tomoyasu Yamada

    发明人： Tomoyasu Yamada

    IPC分类号： H04N3/18 ,  G09G1/00 ,  H02M3/28 ,  H02M3/335 ,  H04N3/27 ,  H04N5/63 ,  H01J29/70

    CPC分类号： G09G1/005 ,  H02M3/33523 ,  H04N5/63

    摘要： A power supply system has a switching element to be turned on and off for d.c. to d.c. conversion of a unidirectional supply voltage in synchronism with horizontal synchronizing pulses used for line by line synchronization in a computer display. Since commercial computer systems commonly make selective use of horizontal synchronizing pulses at two different repetition rates, one of which is too high for driving the switching element, the horizontal synchronizing pulses generated at either rate are directed into an amplitude modulator circuit where the pulses are modulated to have either of two different predetermined amplitudes according to their repetition rates. The repetition rate of the horizontal synchronizing pulses being generated is determined from the amplitude of the amplitude modulated horizontal synchronizing pulses, and the switching element is driven at the lower rate even if the horizontal synchronizing pulses are being generated at the higher rate.

    摘要翻译： 电源系统具有用于开关的开关元件。 到达 在计算机显示器中与用于逐行同步的水平同步脉冲同步地转换单向电源电压。 由于商业计算机系统通常以两种不同的重复速率选择性地使用水平同步脉冲，其中一个对于驱动开关元件来说太高，所以以任一速率产生的水平同步脉冲被引导到幅度调制器电路中，其中脉冲被调制 根据其重复率具有两个不同的预定幅度中的任一个。 所生成的水平同步脉冲的重复率由幅度调制的水平同步脉冲的振幅确定，即使以较高的速率产生水平同步脉冲，也以较低的速率驱动开关元件。