公开(公告)号：US07333081B2

公开(公告)日：2008-02-19

申请号：US10893989

申请日：2004-07-20

申请人： Hiroshi Aoki ,  Ryo Hasegawa ,  Hirofumi Sakamoto ,  Haruki Takata ,  Yasutaka Tsuru

发明人： Hiroshi Aoki ,  Ryo Hasegawa ,  Hirofumi Sakamoto ,  Haruki Takata ,  Yasutaka Tsuru

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/2092 ,  G09G5/04 ,  G09G2360/16 ,  H04N9/3155

摘要： An object of the present invention is to provide an image display technology with which high contrast can be stably obtained.In order to achieve the above object, the present invention changes the gain of a digital luminance signal by feeding back information on maximum and average luminance levels of the luminance signal, adjusts image contrast, and in accordance with the average luminance level detected from the feedback system, controls the illuminance of the backlight applied to a display unit. The control increases the illuminance of the backlight when the detected average luminance level is higher than the upper-limit value of a previously set reference range, and reduces the illuminance when the detected average luminance level is lower than the lower-limit value of the reference range.

摘要翻译： 本发明的目的是提供可以稳定地获得高对比度的图像显示技术。 为了实现上述目的，本发明通过反馈关于亮度信号的最大和平均亮度水平的信息，调整图像对比度，并且根据从反馈检测到的平均亮度水平来改变数字亮度信号的增益 系统控制应用于显示单元的背光的照度。 当检测到的平均亮度水平高于预先设定的参考范围的上限值时，控制增加背光的照度，并且当检测到的平均亮度水平低于参考值的下限值时，降低照度 范围。

公开(公告)号：US20050057486A1

公开(公告)日：2005-03-17

申请号：US10893989

申请日：2004-07-20

申请人： Hiroshi Aoki ,  Ryo Hasegawa ,  Hirofumi Sakamoto ,  Haruki Takata ,  Yasutaka Tsuru

发明人： Hiroshi Aoki ,  Ryo Hasegawa ,  Hirofumi Sakamoto ,  Haruki Takata ,  Yasutaka Tsuru

IPC分类号： G02F1/133 ,  G09G3/18 ,  G09G3/20 ,  G09G3/34 ,  G09G3/36 ,  G09G5/04 ,  H04N5/66 ,  H04N5/74 ,  H04N9/12

CPC分类号： G09G3/3406 ,  G09G3/2092 ,  G09G5/04 ,  G09G2360/16 ,  H04N9/3155

摘要： An object of the present invention is to provide an image display technology with which high contrast can be stably obtained. In order to achieve the above object, the present invention changes the gain of a digital luminance signal by feeding back information on maximum and average luminance levels of the luminance signal, adjusts image contrast, and in accordance with the average luminance level detected from the feedback system, controls the illuminance of the backlight applied to a display unit. The control increases the illuminance of the backlight when the detected average luminance level is higher than the upper-limit value of a previously set reference range, and reduces the illuminance when the detected average luminance level is lower than the lower-limit value of the reference range.

摘要翻译： 本发明的目的是提供可以稳定地获得高对比度的图像显示技术。 为了实现上述目的，本发明通过反馈关于亮度信号的最大和平均亮度水平的信息，调整图像对比度，并且根据从反馈检测到的平均亮度水平来改变数字亮度信号的增益 系统控制应用于显示单元的背光的照度。 当检测到的平均亮度水平高于预先设定的参考范围的上限值时，控制增加背光的照度，并且当检测到的平均亮度水平低于参考值的下限值时，降低照度 范围。

公开(公告)号：US20060061842A1

公开(公告)日：2006-03-23

申请号：US11063752

申请日：2005-02-24

申请人： Naoya Oka ,  Ryo Hasegawa ,  Yasutaka Tsuru ,  Hiroshi Aoki ,  Hirofumi Sakamoto

发明人： Naoya Oka ,  Ryo Hasegawa ,  Yasutaka Tsuru ,  Hiroshi Aoki ,  Hirofumi Sakamoto

IPC分类号： G03F3/08

CPC分类号： H04N5/202 ,  H04N9/69

摘要： The present invention provides a technique for performing gamma correction processing when there are a plurality of characteristic areas, each of which is characterized by the high frequency in a luminance histogram to improve the impression of contrast. According to the present invention, a luminance characteristic detector (4) detects the luminance of an input image signal and a microcomputer (5) calculates an APL and a luminance histogram of an input image signal. A gamma correction circuit (6) performs the gamma correction processing in response to the luminosity of the input image signal by use of the result of the calculation carried out by the microcomputer (5). Then, if there are a plurality of characteristic areas, each of which is characterized by the high frequency in the luminance histogram, a characteristic emphasis circuit (7) performs grayscale extension processing for the plurality of characteristic areas. This makes it possible to perform the most suitable processing in response to the input image signal so that the impression of contrast is improved.

摘要翻译： 本发明提供了一种用于在存在多个特征区域时执行伽马校正处理的技术，每个特征区域的特征在于亮度直方图中的高频以改善对比度的印象。 根据本发明，亮度特性检测器（4）检测输入图像信号的亮度，并且微计算机（5）计算输入图像信号的APL和亮度直方图。 伽马校正电路（6）通过使用由微计算机（5）执行的计算结果，响应于输入图像信号的亮度来进行伽马校正处理。 然后，如果存在多个特征区域，其特征在于亮度直方图中的高频，特征强调电路（7）对多个特征区域进行灰度级扩展处理。 这使得可以响应于输入图像信号执行最合适的处理，从而改善了对比度的印象。

公开(公告)号：US07369183B2

公开(公告)日：2008-05-06

申请号：US11063752

申请日：2005-02-24

申请人： Naoya Oka ,  Ryo Hasegawa ,  Yasutaka Tsuru ,  Hiroshi Aoki ,  Hirofumi Sakamoto

发明人： Naoya Oka ,  Ryo Hasegawa ,  Yasutaka Tsuru ,  Hiroshi Aoki ,  Hirofumi Sakamoto

IPC分类号： H04N5/202 ,  H04N9/69 ,  H04N5/14

CPC分类号： H04N5/202 ,  H04N9/69

摘要： The present invention provides a technique for performing gamma correction processing when there are a plurality of characteristic areas, each of which is characterized by the high frequency in a luminance histogram to improve the impression of contrast. According to the present invention, a luminance characteristic detector (4) detects the luminance of an input image signal and a microcomputer (5) calculates an APL and a luminance histogram of an input image signal. A gamma correction circuit (6) performs the gamma correction processing in response to the luminosity of the input image signal by use of the result of the calculation carried out by the microcomputer (5). Then, if there are a plurality of characteristic areas, each of which is characterized by the high frequency in the luminance histogram, a characteristic emphasis circuit (7) performs grayscale extension processing for the plurality of characteristic areas. This makes it possible to perform the most suitable processing in response to the input image signal so that the impression of contrast is improved.

摘要翻译： 本发明提供了一种用于在存在多个特征区域时执行伽马校正处理的技术，每个特征区域的特征在于亮度直方图中的高频以改善对比度的印象。 根据本发明，亮度特性检测器（4）检测输入图像信号的亮度，并且微计算机（5）计算输入图像信号的APL和亮度直方图。 伽马校正电路（6）通过使用由微计算机（5）执行的计算结果，响应于输入图像信号的亮度来进行伽马校正处理。 然后，如果存在多个特征区域，其特征在于亮度直方图中的高频，特征强调电路（7）对多个特征区域进行灰度级扩展处理。 这使得可以响应于输入图像信号执行最合适的处理，从而改善了对比度的印象。

公开(公告)号：US07430021B2

公开(公告)日：2008-09-30

申请号：US11061826

申请日：2005-02-22

申请人： Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

发明人： Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

IPC分类号： H04N5/208

CPC分类号： H04N5/208

摘要： A picture quality correction circuit is provided which performs contour correction by grasping features of an input video signal accurately. The correction circuit has a filter circuit for extracting contour components in an inputted video signal, a contour component nonlinear processor for changing amplitudes of the contour components extracted by the filter circuit, an adder for adding outputs of the contour component nonlinear processor and the input video signal, a histogram detection circuit for detecting a histogram of the contour components extracted by the filter circuit, and a control circuit for controlling contour emphasis quantities for the contour component nonlinear processor in accordance with the results of detection by the histogram detection circuit.

摘要翻译： 提供了通过精确地掌握输入视频信号的特征来执行轮廓校正的图像质量校正电路。 校正电路具有用于提取输入视频信号中的轮廓分量的滤波器电路，用于改变由滤波电路提取的轮廓成分的幅度的轮廓分量非线性处理器，用于将轮廓分量非线性处理器和输入视频的输出相加的加法器 信号，用于检测由滤波器电路提取的轮廓分量的直方图的直方图检测电路，以及根据直方图检测电路的检测结果来控制轮廓分量非线性处理器的轮廓强调量的控制电路。

公开(公告)号：US20050285977A1

公开(公告)日：2005-12-29

申请号：US11061826

申请日：2005-02-22

申请人： Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

发明人： Masahiro Nako ,  Yasutaka Tsuru ,  Ryo Hasegawa ,  Katsunobu Kimura ,  Hiroshi Aoki

IPC分类号： H04N5/14 ,  H04N5/208 ,  H04N5/21

CPC分类号： H04N5/208

摘要： A picture quality correction circuit is provided which performs contour correction by grasping features of an input video signal accurately. The correction circuit has a filter circuit for extracting contour components in an inputted video signal, a contour component nonlinear processor for changing amplitudes of the contour components extracted by the filter circuit, an adder for adding outputs of the contour component nonlinear processor and the input video signal, a histogram detection circuit for detecting a histogram of the contour components extracted by the filter circuit, and a control circuit for controlling contour emphasis quantities for the contour component nonlinear processor in accordance with the results of detection by the histogram detection circuit.

摘要翻译： 提供了通过精确地掌握输入视频信号的特征来执行轮廓校正的图像质量校正电路。 校正电路具有用于提取输入视频信号中的轮廓分量的滤波器电路，用于改变由滤波电路提取的轮廓成分的幅度的轮廓分量非线性处理器，用于将轮廓分量非线性处理器和输入视频的输出相加的加法器 信号，用于检测由滤波器电路提取的轮廓分量的直方图的直方图检测电路，以及根据直方图检测电路的检测结果来控制轮廓分量非线性处理器的轮廓强调量的控制电路。

公开(公告)号：US20050057487A1

公开(公告)日：2005-03-17

申请号：US10894117

申请日：2004-07-20

申请人： Haruki Takata ,  Hiroshi Aoki ,  Ryo Hasegawa ,  Fumio Sogabe ,  Misako Nakagawa

发明人： Haruki Takata ,  Hiroshi Aoki ,  Ryo Hasegawa ,  Fumio Sogabe ,  Misako Nakagawa

IPC分类号： G09G3/36 ,  G06F3/14 ,  G06T1/20 ,  G09F9/00 ,  G09G3/20 ,  G09G3/291 ,  G09G3/296 ,  G09G3/34 ,  G09G5/00 ,  H04N5/66

CPC分类号： G09G5/003 ,  G09G2320/0606 ,  G09G2370/042 ,  H04N5/46 ,  H04N21/4108 ,  H04N21/4122 ,  H04N21/42638 ,  H04N21/4363 ,  H04N21/440218 ,  H04N21/4621 ,  H04N21/4854

摘要： The present invention provides a technology for using an STB in conjunction with various display panels that comprise different types of display devices. The present invention comprises a display panel (2), which includes a memory section (255) and a transmitter section (210). The memory section (255) stores identification information (ID information), which includes the information about the type of a device constituting the display panel (2) and/or the specifications for the display panel. The transmitter section (210) transmits the ID information stored in the memory section (255) to a signal processing apparatus (1). The signal processing apparatus (1) includes a control circuit (110), which receives the ID information transmitted from the display panel (2), determines the device type of the display panel and/or the specifications for the display panel from the received ID information, and exercises control in accordance with the determination result to change the operation of the signal processing apparatus.

摘要翻译： 本发明提供了一种使用STB结合包括不同类型的显示装置的各种显示面板的技术。 本发明包括显示面板（2），其包括存储部分（255）和发射机部分（210）。 存储器部分（255）存储包括关于构成显示面板（2）的设备的类型和/或显示面板的规格的信息的识别信息（ID信息）。 发送部（210）将存储在存储部（255）中的ID信息发送到信号处理装置（1）。 信号处理装置（1）包括控制电路（110），其接收从显示面板（2）发送的ID信息，从接收的ID确定显示面板的设备类型和/或显示面板的规格 信息和练习根据确定结果进行控制以改变信号处理装置的操作。

公开(公告)号：US07436415B2

公开(公告)日：2008-10-14

申请号：US10894117

申请日：2004-07-20

申请人： Haruki Takata ,  Hiroshi Aoki ,  Ryo Hasegawa ,  Fumio Sogabe ,  Misako Nakagawa

发明人： Haruki Takata ,  Hiroshi Aoki ,  Ryo Hasegawa ,  Fumio Sogabe ,  Misako Nakagawa

IPC分类号： G06F3/038 ,  G09G5/10

CPC分类号： G09G5/003 ,  G09G2320/0606 ,  G09G2370/042 ,  H04N5/46 ,  H04N21/4108 ,  H04N21/4122 ,  H04N21/42638 ,  H04N21/4363 ,  H04N21/440218 ,  H04N21/4621 ,  H04N21/4854

摘要： The present invention provides a technology for using an STB in conjunction with various display panels that comprise different types of display devices. The present invention comprises a display panel (2), which includes a memory section (255) and a transmitter section (210). The memory section (255) stores identification information (ID information), which includes the information about the type of a device constituting the display panel (2) and/or the specifications for the display panel. The transmitter section (210) transmits the ID information stored in the memory section (255) to a signal processing apparatus (1). The signal processing apparatus (1) includes a control circuit (110), which receives the ID information transmitted from the display panel (2), determines the device type of the display panel and/or the specifications for the display panel from the received ID information, and exercises control in accordance with the determination result to change the operation of the signal processing apparatus.

摘要翻译： 本发明提供了一种使用STB结合包括不同类型的显示装置的各种显示面板的技术。 本发明包括显示面板（2），其包括存储部分（255）和发射机部分（210）。 存储器部分（255）存储包括关于构成显示面板（2）的设备的类型和/或显示面板的规格的信息的识别信息（ID信息）。 发送部（210）将存储在存储部（255）中的ID信息发送到信号处理装置（1）。 信号处理装置（1）包括控制电路（110），其接收从显示面板（2）发送的ID信息，从接收的ID确定显示面板的设备类型和/或显示面板的规格 信息和练习根据确定结果进行控制以改变信号处理装置的操作。

公开(公告)号：US07898557B2

公开(公告)日：2011-03-01

申请号：US12187922

申请日：2008-08-07

申请人： Hiroshi Aoki ,  Ryo Hasegawa

发明人： Hiroshi Aoki ,  Ryo Hasegawa

IPC分类号： G09G5/10 ,  H04N5/68

CPC分类号： G09G5/10 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/066

摘要： A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.

摘要翻译： 系统提供即使在具有高亮度的区域中也提供稳定的高对比度的图像显示技术。 基于关于数字亮度信号的平均亮度水平的信息，通过将亮度水平偏移到负侧来降低亮度水平的黑色校正处理以及增加动态范围内的对比度增益的增加处理被执行 模拟亮度信号或数字亮度信号，即使在亮度强烈的情况下也能够提供对比度。

公开(公告)号：US20090059083A1

公开(公告)日：2009-03-05

申请号：US12187922

申请日：2008-08-07

申请人： Hiroshi Aoki ,  Ryo Hasegawa

发明人： Hiroshi Aoki ,  Ryo Hasegawa

IPC分类号： H04N5/202 ,  H04N5/66

CPC分类号： G09G5/10 ,  G09G3/3611 ,  G09G2320/0626 ,  G09G2320/066

摘要： A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.