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1. 发明申请

US20070063744A1 Clock switching circuit 有权
标题翻译：时钟切换电路
公开(公告)号：US20070063744A1
公开(公告)日：2007-03-22
申请号：US11523096
申请日：2006-09-19
申请人： Tomonori Matsumuro , Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai
发明人： Tomonori Matsumuro , Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai
IPC分类号： G06F1/08
CPC分类号： G06F1/08
摘要： This invention provides a clock switching circuit that can switch clocks without causing a hazard or a distortion of a duty ratio of the clocks. The clock switching circuit of this invention includes a first synchronization circuit that synchronizes a clock selection signal with a first clock, a second synchronization circuit that synchronizes with a second clock the clock selection signal that has been synchronized with the first clock by the first synchronization circuit and a clock selection circuit that outputs “1”, that is a high level, in synchronization with the clock selection signal that has been synchronized with the first clock by the first synchronization circuit and after that selects the second clock in synchronization with the clock selection signal that has been synchronized with the second clock by the second synchronization circuit.
摘要翻译：本发明提供了一种可以切换时钟而不引起时钟的占空比的危险或失真的时钟切换电路。本发明的时钟切换电路包括使时钟选择信号与第一时钟同步的第一同步电路，与第二时钟同步的第二同步电路，第一同步电路与第一时钟同步的时钟选择信号以及时钟选择电路，其与通过第一同步电路与第一时钟同步的时钟选择信号同步地输出“1”，即高电平，之后与时钟选择同步地选择第二时钟由第二同步电路与第二时钟同步的信号。

2. 发明授权

US07948452B2 Self-emission type display device 有权
标题翻译：自发式显示装置
公开(公告)号：US07948452B2
公开(公告)日：2011-05-24
申请号：US11516732
申请日：2006-09-07
申请人： Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
发明人： Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
IPC分类号： G09G3/30
CPC分类号： G09G3/3291 , G09G2320/0673
摘要： The invention provides an organic EL display device usable for both negative and positive polarity video signals. The organic EL display device of the invention has a polarity switching circuit switching a polarity of a digital video signal. In a case where a display panel is made for a negative polarity video signal, when a negative digital video signal is inputted, this polarity switching circuit lets the negative polarity digital video signal pass therethrough without inverting its polarity. When a positive polarity digital video signal is inputted, this polarity switching circuit inverts a polarity of the positive polarity digital video signal and inverts and switches reference data for a white level and reference data for a black level in order to obtain an accurate inverted image. An output of the polarity switching circuit is converted into an analog video signal through a first D/A converter and outputted to the display panel.
摘要翻译：本发明提供一种可用于负极性和正极性视频信号的有机EL显示装置。本发明的有机EL显示装置具有切换数字视频信号的极性的极性切换电路。在显示面板成为负极性视频信号的情况下，当输入负数字视频信号时，该极性切换电路使负极数字视频信号通过而不反转其极性。当输入正极性数字视频信号时，该极性切换电路使正极性数字视频信号的极性反相，并将白平衡的参考数据和黑电平的参考数据反相和切换，以获得准确的反转图像。极性切换电路的输出通过第一D / A转换器转换为模拟视频信号，并输出到显示面板。

3. 发明授权

US07656980B2 Clock switching circuit 有权
标题翻译：时钟切换电路
公开(公告)号：US07656980B2
公开(公告)日：2010-02-02
申请号：US11523096
申请日：2006-09-19
申请人： Tomonori Matsumuro , Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai
发明人： Tomonori Matsumuro , Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai
IPC分类号： H04L7/00
CPC分类号： G06F1/08
摘要： This invention provides a clock switching circuit that can switch clocks without causing a hazard or a distortion of a duty ratio of the clocks. The clock switching circuit of this invention includes a first synchronization circuit that synchronizes a clock selection signal with a first clock, a second synchronization circuit that synchronizes with a second clock the clock selection signal that has been synchronized with the first clock by the first synchronization circuit and a clock selection circuit that outputs “1”, that is a high level, in synchronization with the clock selection signal that has been synchronized with the first clock by the first synchronization circuit and after that selects the second clock in synchronization with the clock selection signal that has been synchronized with the second clock by the second synchronization circuit.
摘要翻译：本发明提供了一种可以切换时钟而不引起时钟的占空比的危险或失真的时钟切换电路。本发明的时钟切换电路包括使时钟选择信号与第一时钟同步的第一同步电路，与第二时钟同步的第二同步电路，第一同步电路与第一时钟同步的时钟选择信号以及时钟选择电路，其与通过第一同步电路与第一时钟同步的时钟选择信号同步地输出“1”，即高电平，之后与时钟选择同步地选择第二时钟由第二同步电路与第二时钟同步的信号。

4. 发明申请

US20070057878A1 Self-emission type display device 有权
标题翻译：自发式显示装置
公开(公告)号：US20070057878A1
公开(公告)日：2007-03-15
申请号：US11516732
申请日：2006-09-07
申请人： Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
发明人： Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
IPC分类号： G09G3/30
CPC分类号： G09G3/3291 , G09G2320/0673
摘要： The invention provides an organic EL display device usable for both negative and positive polarity video signals. The organic EL display device of the invention has a polarity switching circuit switching a polarity of a digital video signal. In a case where a display panel is made for a negative polarity video signal, when a negative digital video signal is inputted, this polarity switching circuit lets the negative polarity digital video signal pass therethrough without inverting its polarity. When a positive polarity digital video signal is inputted, this polarity switching circuit inverts a polarity of the positive polarity digital video signal and inverts and switches reference data for a white level and reference data for a black level in order to obtain an accurate inverted image. An output of the polarity switching circuit is converted into an analog video signal through a first D/A converter and outputted to the display panel.
摘要翻译：本发明提供一种可用于负极性和正极性视频信号的有机EL显示装置。本发明的有机EL显示装置具有切换数字视频信号的极性的极性切换电路。在显示面板成为负极性视频信号的情况下，当输入负数字视频信号时，该极性切换电路使负极数字视频信号通过而不反转其极性。当输入正极性数字视频信号时，该极性切换电路使正极性数字视频信号的极性反相，并将白平衡的参考数据和黑电平的参考数据反相和切换，以获得准确的反转图像。极性切换电路的输出通过第一D / A转换器转换为模拟视频信号，并输出到显示面板。

5. 发明申请

US20070052633A1 Display device 审中-公开
标题翻译：显示设备
公开(公告)号：US20070052633A1
公开(公告)日：2007-03-08
申请号：US11511506
申请日：2006-08-29
申请人： Masatoshi Sato , Kazumasa Takai , Hitoshi Yasuda , Tomonori Matsumuro
发明人： Masatoshi Sato , Kazumasa Takai , Hitoshi Yasuda , Tomonori Matsumuro
IPC分类号： G09G3/30
CPC分类号： G09G3/006 , G09G2300/0809
摘要： The invention provides a display device that achieves optimization of an RGB signal without increasing power consumption required for displaying a test image. A display device of an embodiment of the invention has a display panel displaying an image corresponding to an RGB signal, a signal processing circuit portion including a plurality of signal processing circuits optimizing the RGB signal, an ACL circuit controlling the RGB signal so that the display panel emits light with predetermined electric power or less, and first and second test circuits respectively supplying first and second test image signals corresponding to first and second test images for the optimization to the display panel. The signal processing circuit portion further has a display area limitation circuit displaying the first and second test images only on a limited part as a display region of the display panel so that the whole of the display panel emits light with predetermined electric power or less when the first and second test image signals are supplied.
摘要翻译：本发明提供了一种在不增加显示测试图像所需功耗的情况下实现RGB信号的优化的显示装置。本发明的实施例的显示装置具有显示对应于RGB信号的图像的显示面板，包括优化RGB信号的多个信号处理电路的信号处理电路部分，控制RGB信号的ACL电路，使得显示器第一和第二测试电路分别向与显示面板提供对应于第一和第二测试图像的第一和第二测试图像信号进行优化。信号处理电路部分还具有仅在有限部分上显示第一和第二测试图像作为显示面板的显示区域的显示区域限制电路，使得整个显示面板在预定的电力或更少的情况下发光提供第一和第二测试图像信号。

6. 发明申请

US20050225254A1 Display device 审中-公开
标题翻译：显示设备
公开(公告)号：US20050225254A1
公开(公告)日：2005-10-13
申请号：US11102871
申请日：2005-04-11
申请人： Kazumasa Takai , Hitoshi Yasuda
发明人： Kazumasa Takai , Hitoshi Yasuda
IPC分类号： H01L51/50 , G09G3/20 , G09G3/30 , G09G3/32 , H05B33/14
CPC分类号： G09G3/3275 , G09G2300/0842 , G09G2310/066 , G09G2330/021 , G09G2330/028 , G09G2330/04
摘要： In an organic EL display device, a power loss of a driver transistor is suppressed and heating and power consumption of the display device is reduced. A plurality of R pixels is provided with a first power supply circuit, a plurality of G pixels is provided with a second power supply circuit and a plurality of B pixels is provided with a third power supply circuit. The first power supply circuit generates a voltage PVDD-R and a voltage CV-R. The second power supply circuit generates a voltage PVDD-G and a voltage CV-G. Also the third power supply circuit generates a voltage PVDD-B and a voltage CV-B. Each of the voltages generated by the power supply circuits is independently controlled by a micro processing unit in order for the white balance adjustment.
摘要翻译：在有机EL显示装置中，驱动晶体管的功率损耗被抑制，并且显示装置的加热和功耗降低。多个R像素设置有第一电源电路，多个G像素设置有第二电源电路，并且多个B像素设置有第三电源电路。第一电源电路产生电压PVDD-R和电压CV-R。第二电源电路产生电压PVDD-G和电压CV-G。此外，第三电源电路产生电压PVDD-B和电压CV-B。为了白平衡调整，由电源电路产生的每个电压由微处理单元独立控制。

7. 发明授权

US08174215B2 Motor speed controller 有权
标题翻译：电机转速控制器
公开(公告)号：US08174215B2
公开(公告)日：2012-05-08
申请号：US12691172
申请日：2010-01-21
申请人： Kazumasa Takai
发明人： Kazumasa Takai
IPC分类号： H02P7/14
CPC分类号： H02P6/08
摘要： In a motor speed controller, feedback control is implemented at a gain independent of the target rotational speed ωT while the increase in the circuit size or processing load is reduced. The rotational speed ω of the motor is controlled on the basis of a pulse signal in which a pulse period τP varies in inverse proportion to ω. A count clock generation circuit varies the clock frequency FC in proportion to ωT. The pulse period measurement section counts the count clock CLK during τP at the present ω and determines a measured count value C. The feedback filter inputs, as an error signal Ve, the difference between C and a target count value CN that corresponds to ωT, and generates an instruction signal to provide compensation for Ve. The feedback filter scales the instruction signal at a scaling factor that is proportional to ωT.
摘要翻译：在电动机速度控制器中，反馈控制以与目标转速ωT无关的增益实现，同时电路尺寸或处理负载的增加减小。基于脉冲周期τP与ω成反比变化的脉冲信号来控制电机的转速ω。计数时钟产生电路与时钟频率FC成比例地变化。脉冲周期测量部分在当前ω的τP期间对计数时钟CLK进行计数，并确定测量的计数值C.反馈滤波器输入C与对应于ωT的目标计数值CN之间的差作为误差信号Ve，并产生指令信号以提供Ve的补偿。反馈滤波器以与ωT成比例的比例因子缩放指令信号。

8. 发明申请

US20100289444A1 DRIVER CIRCUIT 有权
标题翻译：驱动电路
公开(公告)号：US20100289444A1
公开(公告)日：2010-11-18
申请号：US12772445
申请日：2010-05-03
申请人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
发明人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
IPC分类号： H02P8/38
CPC分类号： H02P8/16
摘要： A stepping motor includes two coils and has supply currents to the two coils with different phases so that a rotor is rotated by the two coils. During a period where one coil is in a high impedance state, an induced voltage generated at that coil is detected. An output control circuit controls the magnitude of motor drive current supplied to the two coils in accordance with the detected induced voltage state. Then, prior to entering the high impedance state from the drive state, a short-circuit period is provided for short circuiting both terminals of the coil.
摘要翻译：步进电机包括两个线圈，并且具有不同相位的两个线圈的电源电流，使得转子由两个线圈旋转。在一个线圈处于高阻抗状态的时段期间，检测到在该线圈处产生的感应电压。输出控制电路根据检测到的感应电压状态来控制提供给两个线圈的电动机驱动电流的大小。然后，在从驱动状态进入高阻抗状态之前，提供短路时间以使线圈的两个端子短路。

9. 发明授权

US6115335A Reproduction apparatus for disk-like recording medium 失效
标题翻译：用于盘状记录介质的再现装置
公开(公告)号：US6115335A
公开(公告)日：2000-09-05
申请号：US35664
申请日：1998-03-05
申请人： Kazumasa Takai
发明人： Kazumasa Takai
IPC分类号： G11B7/085 , G11B7/09 , G11B19/28 , G11B21/08 , G11B7/00
CPC分类号： G11B21/083 , G11B19/28 , G11B7/08517 , G11B7/0901
摘要： A disk-like recording medium, such as a compact disc, stores information on tracks recorded on the disc surface. A spindle motor rotates the disc and a read unit, which moves in a radial direction in relation to the disc, reads the stored information off of disc. Servo control of the spindle motor and movement of the read unit is controlled by a control circuit, which acts in response to a recording track detection signal. Servo control of the movement of the read unit is further controlled by a mute circuit, which only allows the read unit to be moved when a control signal generated by the control circuit is above a predetermined voltage level. Limiting when the read unit is driven conserves power.
摘要翻译：诸如光盘的盘状记录介质存储关于记录在盘表面上的轨迹的信息。主轴电动机旋转盘，并且相对于盘沿径向移动的读取单元从盘读出存储的信息。主轴电机的伺服控制和读取单元的运动由控制电路控制，控制电路响应于记录磁道检测信号而起作用。读取单元的运动的伺服控制由静音电路进一步控制，静音电路仅当控制电路产生的控制信号高于预定电压电平时才允许读取单元移动。驱动读取单元时限制电源。

10. 发明授权

US08198844B2 Motor speed controller 有权
标题翻译：电机转速控制器
公开(公告)号：US08198844B2
公开(公告)日：2012-06-12
申请号：US12691284
申请日：2010-01-21
申请人： Kazumasa Takai
发明人： Kazumasa Takai
IPC分类号： H02P6/16
CPC分类号： H02P6/08
摘要： A motor speed controller detects out-of-control reverse rotation of a motor even when the pulse signal obtained from the motor and synchronized with the rotation is of only one kind. A target instruction signal is generated on the basis of a target rotational speed ωT of the motor. A compensation instruction signal is generated on the basis of an error signal Ve that corresponds to a difference between the actual rotational speed ω and ωT. A composite signal is generated by combining above two instruction signals. A state in which the control direction of the composite signal with respect to ω is the reverse of the direction of ωT, and the strength of the composite signal exceeds a designated threshold continues for a designated period, is judged as a state of out-of-control reverse rotation, and restoration to the normal state is performed.
摘要翻译：电动机速度控制器即使当从电动机获得的脉冲信号与旋转同步只是一种时，也检测到电动机的失控反转。基于电机的目标转速ωT生成目标指令信号。基于与实际转速ω和ωT之间的差对应的误差信号Ve产生补偿指令信号。通过组合上述两个指令信号来产生复合信号。复合信号相对于ω的控制方向与ωT的方向相反的状态，复合信号的强度超过指定阈值的状态持续指定的时间段，被判定为超出的状态控制反向旋转，恢复正常状态。

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