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公开(公告)号：EP1596357A4
公开(公告)日：2009-09-02
申请号：EP04713194
申请日：2004-02-20
申请人： KOMADEN CORP
发明人： NAKAJIMA CHIAKI
CPC分类号： G09F9/33 , G09G3/20 , G09G3/2085 , G09G3/2088 , G09G3/2092 , G09G3/32 , G09G2300/026 , G09G2300/0452 , G09G2320/08 , H04B10/1141 , H04B10/116
摘要： A light emitting unit can easily and surely set an address and clearly checks the setting result of the address. The light emitting unit such as an LED unit (1) constituting a light emitting unit of a display device or a light emitting unit of decoration display includes: infrared ray reception element (7) for receiving data having an address transmitted by infrared rays; an address storage section (6) for storing the address; and a control section (5) for recognizing the address from the data and storing it in an address storage section. Preferably, the control section (5) stores light emitting patterns of the display LED (2) corresponding to a case when an address is normally set and to a case when an error is caused in the address setting. When the normal setting is recognized, light is emitted according to the light emitting pattern of the normal setting, and when an error is recognized, light is emitted according to the light emitting pattern of the error.
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公开(公告)号：EP1615195A4
公开(公告)日：2007-06-20
申请号：EP04714887
申请日：2004-02-26
申请人： KOMADEN CORP
发明人： NAKAJIMA CHIAKI
CPC分类号： G09G3/32 , G09G3/14 , G09G3/2003 , G09G2300/0814 , G09G2300/088 , H05B33/083 , H05B33/086
摘要： A display LED drive circuit is configured as follows. For example, a constant current circuit, a green display LED circuit, and a red display LED circuit are connected in series and a resistor circuit having a resistor causing a potential difference identical to each of the display LED is connected in parallel to each of the LED circuits. A corresponding switching element of the display LED circuit and a corresponding switching element of the resistor circuit connected in parallel are controlled to be opened and closed in opposite ways. Another route connected to a source circuit in parallel is connected to a constant current circuit, a blue display LED circuit, and a constant voltage diode in series. The blue display LED circuit is connected in parallel to a resistor circuit as has been described above. A predetermined voltage is taken out from the output terminal by the constant voltage diode and supplied to a control circuit. Thus, it is possible to reduce the number of constant current circuits, current consumption, and the cost, thereby improving the power source use efficiency.
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