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1. 发明授权

US08259237B2 Image display apparatus and image display method 失效
标题翻译：图像显示装置和图像显示方法
公开(公告)号：US08259237B2
公开(公告)日：2012-09-04
申请号：US12491790
申请日：2009-06-25
申请人： Ken Nishioka , Atsuya Hirano , Kenji Nagashima , Manabu Murayama
发明人： Ken Nishioka , Atsuya Hirano , Kenji Nagashima , Manabu Murayama
IPC分类号： H04N5/64
CPC分类号： G09G3/02 , G09G2320/0233 , H04N9/3129
摘要： A detection surface of an optical detector is divided into regions C, E, F, G, and H. The optical detector outputs detection signals corresponding to the amounts of light incident on the respective regions. A position detection controller calculates an image projection position based on timing at which a laser beam is incident on region C. A laser control circuit adjusts the intensity of the laser beam emitted by a laser based on laser beam intensities detected in regions E to H arranged around region C.
摘要翻译：光检测器的检测面被分为区域C，E，F，G和H.光检测器输出与入射在各个区域上的光量对应的检测信号。位置检测控制器基于激光束入射到区域C的定时来计算图像投影位置。激光控制电路基于在区域E至H中检测到的激光束强度来调整由激光发射的激光束的强度周边地区C.

2. 发明申请

US20100002152A1 IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD 失效
标题翻译：图像显示装置和图像显示方法
公开(公告)号：US20100002152A1
公开(公告)日：2010-01-07
申请号：US12491790
申请日：2009-06-25
申请人： Ken Nishioka , Atsuya Hirano , Kenji Nagashima , Manabu Murayama
发明人： Ken Nishioka , Atsuya Hirano , Kenji Nagashima , Manabu Murayama
IPC分类号： H04N5/64
CPC分类号： G09G3/02 , G09G2320/0233 , H04N9/3129
摘要： A detection surface of an optical detector is divided into regions C, E, F, G, and H. The optical detector outputs detection signals corresponding to the amounts of light incident on the respective regions. A position detection controller calculates an image projection position based on timing at which a laser beam is incident on region C. A laser control circuit adjusts the intensity of the laser beam emitted by a laser based on laser beam intensities detected in regions E to H arranged around region C.
摘要翻译：光检测器的检测面被分为区域C，E，F，G和H.光检测器输出与入射在各个区域上的光量对应的检测信号。位置检测控制器基于激光束入射到区域C的定时来计算图像投影位置。激光控制电路基于在区域E至H中检测到的激光束强度来调整由激光发射的激光束的强度周边地区C.

3. 发明申请

US20100265278A1 IMAGE DISPLAY APPARATUS AND METHOD FOR CONTROLLING IMAGE DISPLAY APPARATUS 审中-公开
标题翻译：图像显示装置和控制图像显示装置的方法
公开(公告)号：US20100265278A1
公开(公告)日：2010-10-21
申请号：US12762716
申请日：2010-04-19
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： G09G5/10
CPC分类号： H04N9/3135 , H01S5/042 , H04N9/3155 , H04N9/3182
摘要： An image display apparatus wherein reduction in contrast or resolution is prevented is provided. A laser projector as an embodiment of the image display apparatus includes a memory storing a threshold value predetermined for changing a driving mode of a laser light source, a calculator for calculating an optical power level for projecting an image, a driving-mode selector selecting a mode for driving the laser light source, a driving controller for sending a signal to the laser light source in accordance with a selected driving mode, and a laser emitter. The laser projector operates at least at a bias current value Ib or more. In this case, when the optical power level is lower than or equal to a predetermined threshold value TH, the laser projector emits pulsed light. When the optical power level based on a video signal exceeds threshold value TH, the laser projector changes the driving mode of laser light emission from pulsed light emission to DC light emission, to supply a current higher than or equal to bias current value Ib to each laser light source.
摘要翻译：提供了防止对比度或分辨率降低的图像显示装置。作为图像显示装置的实施例的激光投影仪包括存储预定用于改变激光光源的驱动模式的阈值的存储器，用于计算用于投影图像的光功率电平的计算器，驱动模式选择器选择用于驱动激光源的模式，用于根据选择的驱动模式向激光光源发送信号的驱动控制器和激光发射器。激光投影仪至少工作在偏置电流值Ib或更大。在这种情况下，当光功率水平低于或等于预定阈值TH时，激光投影仪发射脉冲光。当基于视频信号的光功率电平超过阈值TH时，激光投影仪将激光发射的驱动模式从脉冲发光改变为DC发光，以将电流高于或等于偏置电流值Ib提供给每个激光光源。

4. 发明授权

US09069184B2 Display device, and portable apparatus having projector function 有权
标题翻译：显示装置和具有投影仪功能的便携式装置
公开(公告)号：US09069184B2
公开(公告)日：2015-06-30
申请号：US13635554
申请日：2011-03-07
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： G03B21/28 , H04N9/31 , G02B27/48 , G02B26/10 , G09G3/02 , G09G3/00
CPC分类号： G02B27/48 , G02B26/10 , G09G3/002 , G09G3/02 , G09G2320/0233
摘要： Disclosed is a display device capable of inhibiting a projected picture from occurrence of brightness unevenness while reducing speckle noise. The display device (100) includes a control portion (15) continuously supplying current to a laser beam generation portion (12, 13, 14) nonstop for a period longer than a first period thereby controlling the laser beam generation portion to output the laser beam and controlling the laser beam generation portion to stop the output of the laser beam at least once in a second period scanning one image forming element (1, 2).
摘要翻译：公开了能够抑制投影图像发生亮度不均匀性同时减少斑点噪声的显示装置。显示装置（100）包括控制部分（15），其连续地向激光束产生部分（12,13,14）供电，持续时间长于第一周期，从而控制激光束产生部分输出激光束以及在扫描一个图像形成元件（1,2）的第二周期中控制激光束产生部分至少停止激光束的输出。

5. 发明申请

US20130010211A1 Display Device, and Portable Apparatus having Projector Function 有权
标题翻译：显示设备和具有投影机功能的便携式设备
公开(公告)号：US20130010211A1
公开(公告)日：2013-01-10
申请号：US13635554
申请日：2011-03-07
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： G03B21/14 , H04N9/31
CPC分类号： G02B27/48 , G02B26/10 , G09G3/002 , G09G3/02 , G09G2320/0233
摘要： Disclosed is a display device capable of inhibiting a projected picture from occurrence of brightness unevenness while reducing speckle noise. The display device (100) includes a control portion (15) continuously supplying current to a laser beam generation portion (12, 13, 14) nonstop for a period longer than a first period thereby controlling the laser beam generation portion to output the laser beam and controlling the laser beam generation portion to stop the output of the laser beam at least once in a second period scanning one image forming element (1, 2).
摘要翻译：公开了能够抑制投影图像发生亮度不均匀性同时减少斑点噪声的显示装置。显示装置（100）包括控制部分（15），其连续地向激光束产生部分（12,13,14）供电，持续时间长于第一周期，从而控制激光束产生部分输出激光束以及在扫描一个图像形成元件（1,2）的第二周期中控制激光束产生部分至少停止激光束的输出。

6. 发明授权

US07953132B2 Laser driver circuit and laser display 有权
标题翻译：激光驱动电路和激光显示
公开(公告)号：US07953132B2
公开(公告)日：2011-05-31
申请号：US12555256
申请日：2009-09-08
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/0428 , H04N9/3129 , H04N9/3155
摘要： A laser driver circuit comprising a current supply circuit for supplying a laser diode with a current is provided. The current supply circuit comprises a voltage-to-current converter circuit, a current output line for outputting the current generated by the voltage-to-current converter circuit, a current supply line connected to the laser diode, a ground line connected to the ground, and a current path switch for selectively connecting either the current supply line or the ground line to the current output line. The laser driver circuit further comprises a current output prevention circuit for preventing the voltage-to-current converter circuit from generating the current by disconnecting the voltage input line using a voltage input switch so that the voltage is not input to the voltage-to-current converter circuit, when the current output line and the ground line are connected by the current path switch.
摘要翻译：提供了一种包括用于向激光二极管提供电流的电流供应电路的激光驱动器电路。电流供应电路包括电压 - 电流转换器电路，用于输出由电压 - 电流转换器电路产生的电流的电流输出线，连接到激光二极管的电流线，连接到地的接地线以及用于选择性地将电流供给线或接地线连接到电流输出线的电流路径开关。激光驱动器电路还包括电流输出防止电路，用于通过使用电压输入开关断开电压输入线来防止电压 - 电流转换器电路产生电流，使得电压未被输入到电压 - 电流转换器电路，当电流输出线和接地线由电流路径开关连接时。

7. 发明授权

US09791711B2 Image display device 有权
公开(公告)号：US09791711B2
公开(公告)日：2017-10-17
申请号：US13811476
申请日：2011-07-11
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： G02B27/48 , G03B21/20 , G03B33/06 , G03B33/12 , H04N9/31 , G09G3/02 , H01S5/00 , H01S5/40
CPC分类号： G02B27/48 , G03B21/2033 , G03B33/06 , G03B33/12 , G09G3/02 , G09G2360/145 , H01S5/005 , H01S5/4093 , H04N9/3129 , H04N9/3167
摘要： To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.

8. 发明申请

US20130120714A1 Image Display Device 有权
标题翻译：图像显示设备
公开(公告)号：US20130120714A1
公开(公告)日：2013-05-16
申请号：US13811476
申请日：2011-07-11
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： G02B27/48
CPC分类号： G02B27/48 , G03B21/2033 , G03B33/06 , G03B33/12 , G09G3/02 , G09G2360/145 , H01S5/005 , H01S5/4093 , H04N9/3129 , H04N9/3167
摘要： To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.
摘要翻译：为了有效地防止由于偏振方向的切换而导致的图像的闪烁，同时减少散斑噪声。在激光的光路中将偏振切换单元设置到投影面A，并且在p和S偏振之间周期性地切换从其发射的激光的偏振方向。激光控制单元与偏振切换单元的切换同步地控制激光光源，并根据激光的偏振方向为P偏振时的P偏振的驱动电流特性，确定与要显示的灰度对应的驱动电流 P极化。此外，当激光的偏振方向为S偏振时，激光控制单元基于用于P偏振的驱动电流特性来确定与要显示的灰度对应的驱动电流。

9. 发明申请

US20100061413A1 Laser Driver Circuit and Laser Display 有权
标题翻译：激光驱动电路和激光显示
公开(公告)号：US20100061413A1
公开(公告)日：2010-03-11
申请号：US12555256
申请日：2009-09-08
申请人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
发明人： Ken Nishioka , Kenji Nagashima , Atsuya Hirano , Atsuhiko Chikaoka
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/0428 , H04N9/3129 , H04N9/3155
摘要： A laser driver circuit comprising a current supply circuit for supplying a laser diode with a current is provided. The current supply circuit comprises a voltage-to-current converter circuit, a current output line for outputting the current generated by the voltage-to-current converter circuit, a current supply line connected to the laser diode, a ground line connected to the ground, and a current path switch for selectively connecting either the current supply line or the ground line to the current output line. The laser driver circuit further comprises a current output prevention circuit for preventing the voltage-to-current converter circuit from generating the current by disconnecting the voltage input line using a voltage input switch so that the voltage is not input to the voltage-to-current converter circuit, when the current output line and the ground line are connected by the current path switch.
摘要翻译：提供了一种包括用于向激光二极管提供电流的电流供应电路的激光驱动器电路。电流供应电路包括电压 - 电流转换器电路，用于输出由电压 - 电流转换器电路产生的电流的电流输出线，连接到激光二极管的电流线，连接到地的接地线以及用于选择性地将电流供给线或接地线连接到电流输出线的电流路径开关。激光驱动器电路还包括电流输出防止电路，用于通过使用电压输入开关断开电压输入线来防止电压 - 电流转换器电路产生电流，使得电压未被输入到电压 - 电流转换器电路，当电流输出线和接地线由电流路径开关连接时。

10. 发明授权

US08294083B2 Image display device and method with mirror drive sensitivity correction 失效
标题翻译：具有镜面驱动灵敏度校正的图像显示装置和方法
公开(公告)号：US08294083B2
公开(公告)日：2012-10-23
申请号：US12485564
申请日：2009-06-16
申请人： Ken Nishioka , Atsuya Hirano , Hiroki Matsubara , Hiroshi Nishigaki
发明人： Ken Nishioka , Atsuya Hirano , Hiroki Matsubara , Hiroshi Nishigaki
IPC分类号： H01J3/14
CPC分类号： G03B21/28 , H04N9/3129
摘要： An image display device is provided, by which variations in drive sensitivity of a scan mirror is corrected. Processing executed by a CPU in a laser projector includes the steps of: driving a scanner mirror in a vertical direction; allowing at least one of a green laser and red/blue lasers to emit light; calculating stay time in a light-receiving region in a photoreceptor; comparing the calculated stay time with ideal stay time Tideal; decreasing a tilt of a drive signal for driving the scanner mirror in the vertical direction if the calculated stay time is shorter than the stay time Tideal; and increasing the tilt of the drive signal if the calculated stay time is longer than the stay time Tideal.
摘要翻译：提供一种图像显示装置，由此校正扫描镜的驱动灵敏度的变化。由激光投影机中的CPU执行的处理包括以下步骤：在垂直方向上驱动扫描镜; 允许绿色激光和红色/蓝色激光器中的至少一种发光; 计算感光体的光接收区域的停留时间; 将计算停留时间与理想停留时间Tideal进行比较; 如果所计算的停留时间短于停留时间Tideal，则减小用于在垂直方向上驱动扫描仪反射镜的驱动信号的倾斜; 并且如果所计算的停留时间长于停留时间Tideal，则增加驱动信号的倾斜度。

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