公开(公告)号：EP2782343B1

公开(公告)日：2018-06-27

申请号：EP13193955.5

申请日：2013-11-21

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Haruna, Fumio ,  Kuroiwa, Tsutomu ,  Ogi, Yuya

IPC: H04N9/31

CPC classification number: G09G5/10 ,  G02B26/0816 ,  H04N9/3129 ,  H04N9/3144 ,  H04N9/3182 ,  H04N9/3194

Abstract: A change in the white balance caused due to the temperature is reduced in an image display device using MEMS and a laser light source. An image processing unit of the device superposes a signal based on a first measured value of a light quantity at a first temperature on a image signal to be supplied to the laser light source. An amplification factor of the light source drive unit is changed so that a second measured value at a second temperature comes close to the first measured value at the first temperature as a target value based on the second measured value at which the light quantity of light generated at the laser light source is measured at the second temperature different from the first temperature on the signal based on the first measured value.

公开(公告)号：EP2827184A1

公开(公告)日：2015-01-21

申请号：EP14157909.4

申请日：2014-03-05

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Ishii, Yasunori ,  Haruna, Fumio

IPC: G02B26/10 ,  G03B21/14 ,  H04N9/31

CPC classification number: G09G3/3406 ,  G02B26/101 ,  G03B21/2013 ,  G03B21/2033 ,  G03B33/06 ,  H04N9/3135 ,  H04N9/3161 ,  H04N9/3182 ,  H04N9/3194

Abstract: The white balance for a high brightness region and a low brightness region is improved in an image display device using MEMS and a laser light source. An image processing unit of the device superposes a signal based on a first measured value of a light quantity at a first temperature on a picture signal, during its blanking period, which is supplied to the laser light source, and superposes a high frequency signal on the picture signal during its effective scanning period. An amplification factor of the light source drive unit is changed so that a second measured value at a second temperature comes close to the first measured value at the first temperature as a target value based on the second measured value at which the light quantity of light generated at the laser light source is measured at the second temperature different from the first temperature on the signal based on the first measured value. By superposition of the high frequency signal, white balance control in a low brightness region for which control is especially difficult is performed with adequate accuracy.

Abstract translation: 在使用MEMS和激光光源的图像显示装置中，高亮度区域和低亮度区域的白平衡得到改善。 该设备的图像处理单元将基于第一温度下的光量的第一测量值的信号叠加在供给激光源的消隐时段期间的图片信号上，并且叠加高频信号到 图像信号在其有效扫描期间。 光源驱动单元的放大系数被改变，使得第二温度下的第二测量值接近第一温度下的第一测量值作为基于产生的光量的第二测量值的目标值 在基于第一测量值的信号上在与第一温度不同的第二温度下测量激光源。 通过高频信号的叠加，在控制特别困难的低亮度区域中的白平衡控制以足够的精度进行。

公开(公告)号：EP2775472A3

公开(公告)日：2015-04-08

申请号：EP14000131.4

申请日：2014-01-14

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Ogi, Yuya ,  Seo, Yoshiho ,  Haruna, Fumio ,  Ueda, Toshio ,  Nonaka, Tomoyuki

IPC: G09G3/00 ,  G09G3/02 ,  G09G3/20 ,  H04N9/31

CPC classification number: G09G5/02 ,  G09G3/002 ,  G09G3/025 ,  G09G3/2081 ,  G09G2320/0238 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2320/041 ,  G09G2320/0666 ,  G09G2320/103 ,  G09G2360/145 ,  G09G2360/16 ,  H04N9/3135

Abstract: A laser projection display device includes: a laser light source drive means; an attribute amount detection means for detecting the attribute amount of a picture signal; a light sensor (10) that measures the light amounts of the laser light sources; and a temperature sensor (11) that measures the temperatures of the laser light sources. The laser projection display device is configured so that the current vs. light amount output characteristics of the laser light sources with a threshold current and the current gain as a parameter are corrected in accordance with the load amount of the picture signal per frame if the change of the attribute amount exceeds a predefined amount; the light sources are driven at a predefined timing of the vertical blanking interval; controls the threshold currents and current gains in accordance with the light amounts; and the threshold currents and current gains are corrected on the basis of the measured temperatures.

公开(公告)号：EP2782343A1

公开(公告)日：2014-09-24

申请号：EP13193955.5

申请日：2013-11-21

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Haruna, Fumio ,  Kuroiwa, Tsutomu ,  Ogi, Yuya

IPC: H04N9/31

CPC classification number: G09G5/10 ,  G02B26/0816 ,  H04N9/3129 ,  H04N9/3144 ,  H04N9/3182 ,  H04N9/3194

Abstract: A change in the white balance caused due to the temperature is reduced in an image display device using MEMS and a laser light source. An image processing unit of the device superposes a signal based on a first measured value of a light quantity at a first temperature on a image signal to be supplied to the laser light source. An amplification factor of the light source drive unit is changed so that a second measured value at a second temperature comes close to the first measured value at the first temperature as a target value based on the second measured value at which the light quantity of light generated at the laser light source is measured at the second temperature different from the first temperature on the signal based on the first measured value.

Abstract translation: 在使用MEMS和激光光源的图像显示装置中，由温度引起的白平衡的变化减小。 该设备的图像处理单元将基于第一温度下的光量的第一测量值的信号叠加在要提供给激光源的图像信号上。 光源驱动单元的放大系数被改变，使得第二温度下的第二测量值接近第一温度下的第一测量值作为基于产生的光量的第二测量值的目标值 在基于第一测量值的信号上在与第一温度不同的第二温度下测量激光源。