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1. 发明授权

US10726769B2 LED display device and drive device 有权
公开(公告)号：US10726769B2
公开(公告)日：2020-07-28
申请号：US15580058
申请日：2016-07-01
申请人： Mitsubishi Electric Corporation
发明人： Isao Yoneoka , Shigenori Shibue , Yoshinori Asamura
IPC分类号： G09G3/32 , H01L33/00 , G09G3/20 , G09G5/02 , G09G3/3216
摘要： An object is to provide a technique capable of suppressing a power consumption of an LED. An LED display device includes voltage supply parts, which can supply a multiple types of voltages being different from each other and a driver which drives an LED display using the multiple types of voltages. The driver switches a combination of an LED array in a lighting target group which is one of the plurality of groups being subject to lighting-up and the multiple types of voltages which should be supplied in parallel with the LED array, under a time sharing control, and turns on some LEDs, which should be turned on by the voltages which should be supplied to the LED array, in the plurality of LEDs included in the LED array in the lighting target group.

2. 发明授权

US10957244B2 LED display system and LED display device 有权
公开(公告)号：US10957244B2
公开(公告)日：2021-03-23
申请号：US16635365
申请日：2017-09-11
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Kiyoshi Sawada , Yoshinori Asamura
IPC分类号： G09G3/32
摘要： In an LED display system, an object of the present invention is to provide a technique capable of suppressing power consumption of a plurality of LED display devices by synchronizing power saving control by each controller. Each controller includes a control circuit, a signal line, an average brightness value communication unit, and a video signal distribution unit. The control circuit calculates an average brightness value Yave of pixels constituting a frame and generates a READY signal. The average brightness value communication unit outputs the average brightness value to the signal line after detecting the completion of calculation of the average brightness values of all the controllers. The control circuit calculates a common brightness correction coefficient Cy based on the average brightness value Yave. The video signal distribution unit distributes the video signal and the common brightness correction coefficient Cy to the single LED unit.

3. 发明授权

US09392239B2 Multi-screen display apparatus 有权
标题翻译：多画面显示装置
公开(公告)号：US09392239B2
公开(公告)日：2016-07-12
申请号：US14727159
申请日：2015-06-01
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Yoshinori Asamura , Isao Yoneoka , Noboru Hamaguchi
IPC分类号： H04N5/66 , H04N9/12 , H04N9/31
CPC分类号： H04N9/3179 , H04N9/3147
摘要： In a multi-screen display apparatus according to the present invention, a master image display apparatus acquires determination results obtained by an input detector and acquires a video signal of which channel is selected by a selector from each of a plurality of image display apparatuses including the master image display apparatus. In a case where the selector of any of the image display apparatuses selects a video signal of a channel that is not input to the video receiver, the master image display apparatus controls the selector of the image display apparatus to select a video signal of another channel that is input to the video receiver and controls the selector of at least one of the others of the image display apparatuses to select a video signal of the other channel.
摘要翻译：在根据本发明的多屏显示装置中，主图像显示装置获取由输入检测器获得的确定结果，并且从多个图像显示装置中的每一个获取选择器选择哪个通道的视频信号，主图像显示装置。在任何图像显示装置的选择器选择未输入到视频接收机的频道的视频信号的情况下，主图像显示装置控制图像显示装置的选择器选择另一个频道的视频信号其被输入到视频接收器并且控制图像显示装置中的至少一个的选择器来选择另一个通道的视频信号。

4. 发明授权

US09743476B2 Light source control device and light source control method 有权
公开(公告)号：US09743476B2
公开(公告)日：2017-08-22
申请号：US14721743
申请日：2015-05-26
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Isao Yoneoka , Yoshinori Asamura , Zenkou Yamamoto , Haruhisa Inoue
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0848 , H05B33/0827
摘要： A light source control device includes a constant-current circuit that collectively supplies a current to a plurality of LEDs, a current detection circuit that divides the plurality of LEDs into groups and detects a current amount of a current supplied to each of the groups, and a microcomputer that detects an open fault in the LEDs on the basis of a ratio of the current amount in each of the groups and controls a current supplied from the constant-current circuit to be reduced in a case where an open fault is detected in the LEDs.

5. 发明授权

US09370082B2 Light source control apparatus and light source control method 有权
标题翻译：光源控制装置及光源控制方法
公开(公告)号：US09370082B2
公开(公告)日：2016-06-14
申请号：US14834100
申请日：2015-08-24
申请人： Mitsubishi Electric Corporation
发明人： Isao Yoneoka , Yoshinori Asamura , Zenkou Yamamoto , Haruhisa Inoue
IPC分类号： H05B33/08 , H05B37/03
CPC分类号： H05B33/089 , H05B33/0827 , H05B33/0893
摘要： A controller determines whether parallel-connected light sources include a faulty light source. When a faulty light source is included, the controller controls at least one of a current supply unit and a switching unit such that a current is continuously supplied to normal light sources being light sources of the light sources except for the faulty light source.
摘要翻译：控制器确定并联光源是否包括有故障的光源。当包括有故障的光源时，控制器控制电流供应单元和开关单元中的至少一个，使得电流被连续地提供给作为光源的有缺陷的光源的光源的普通光源。

6. 发明授权

US09591720B2 LED display apparatus 有权
标题翻译： LED显示装置
公开(公告)号：US09591720B2
公开(公告)日：2017-03-07
申请号：US15204835
申请日：2016-07-07
申请人： Mitsubishi Electric Corporation
发明人： Yoshinori Asamura , Shigenori Shibue , Isao Yoneoka , Yasunori Wada
IPC分类号： G06F5/00 , H05B37/02 , H05B33/08
CPC分类号： H05B37/0281 , G09G3/00 , G09G3/32 , G09G2320/0233 , G09G2320/0242 , G09G2320/045 , G09G2320/048 , G09G2360/145 , H05B33/0869
摘要： An LED display apparatus includes a first LED display including a first LED, a second LED display including a second LED, and a luminance corrector. The luminance corrector corrects a luminance of the first LED in accordance with a first cumulative lighting period of the first LED and with both luminance transitions and a second cumulative lighting period of the second LED.
摘要翻译： LED显示装置包括：第一LED显示器，包括第一LED，包括第二LED的第二LED显示器和亮度校正器。亮度校正器根据第一LED的第一累积点亮周期和第二LED的亮度转换和第二累积点亮周期校正第一LED的亮度。

7. 发明授权

US10971056B2 Display device 有权
公开(公告)号：US10971056B2
公开(公告)日：2021-04-06
申请号：US16311642
申请日：2018-01-12
申请人： Mitsubishi Electric Corporation
发明人： Takashi Matoba , Shigenori Shibue , Yoshinori Asamura
IPC分类号： G09G3/32 , G09G3/20 , G09G5/14
摘要： Provided is a display device that individually corrects luminance of an image to be displayed in a part of an image display area and an image to be displayed in the other area. The display device includes a display unit to display an entire image, and a luminance correction controller to correct luminance of the entire image. The entire image is an image in which a first image displayed in a first display area being an area except a second display area is superimposed by a second image displayed in the second display area that is set in a part of the image display area. The luminance correction controller respectively corrects the luminance of the first and second images by using the first and second luminance correction coefficients. The display unit displays first and the second images each having corrected luminance respectively in the first and second display areas.

8. 发明授权

US09131585B2 Light source control device and light source control method 有权
标题翻译：光源控制装置及光源控制方式
公开(公告)号：US09131585B2
公开(公告)日：2015-09-08
申请号：US14489517
申请日：2014-09-18
申请人： Mitsubishi Electric Corporation
发明人： Isao Yoneoka , Yoshinori Asamura , Zenkou Yamamoto , Haruhisa Inoue
IPC分类号： H05B33/08
CPC分类号： H05B33/089 , H05B33/0848
摘要： A microcomputer of a light source control device specifies an LED belonging to LEDs and subjected to a short-circuit failure based on a result of determination by a short-circuit failure detecting circuit and current amounts sensed by current sensing circuits respectively. The microcomputer makes corresponding one of switching elements interrupt supply of a current to the specified LED. The microcomputer makes a constant current circuit supply an LED not specified with a current not exceeding a current responsive to the number of such LEDs not specified.
摘要翻译：光源控制装置的微型计算机根据短路故障检测电路的判定结果和电流检测电路分别检测到的电流量，分别指定属于LED的LED并发生短路故障。微型计算机使相应的一个开关元件中断向指定LED的电流供应。微型计算机使得恒定电流电路根据未指定的LED的数量来提供未指定的电流不超过电流的LED。

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