发明名称 |
LED DISPLAY DEVICE HAVING SCREEN TEST FUNCTION |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED display device having a screen test function to efficiently identify visually a failure point on an LED unit constituting a screen. <P>SOLUTION: A screen test circuit section 170 includes: a first multiplier 171a that multiplies a piece of image input data which is input from an image memory 160 by a predetermined transmission factor α; a second multiplier 171b that multiplies a selected test color by a transmission factor (1-α); an adder 172 that adds a piece of data output from the first multiplier 171a and a piece of data output from the second multiplier 171b; and a selector 173a that selects either the image input data or the data output from the adder 172 based on a screen test area selection signal to output the selected data as an image to be displayed on the screen. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2012234121(A) |
申请公布日期 |
2012.11.29 |
申请号 |
JP20110104249 |
申请日期 |
2011.05.09 |
申请人 |
MITSUBISHI ELECTRIC CORP |
发明人 |
HANAMURA TOSHIAKI;OKAMOTO TAKASHI;WAKASUGI NORIYOSHI |
分类号 |
G09G3/32;G09F9/00;G09G3/20 |
主分类号 |
G09G3/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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