公开(公告)号：EP2547173A2

公开(公告)日：2013-01-16

申请号：EP12176277.7

申请日：2012-07-13

申请人： Panasonic Corporation

发明人： Kamada, Masao ,  Shiohama, Eiji ,  Nishino, Hiroyuki ,  Maehara, Minoru ,  Hasitani, Yosiaki ,  Kondo, Yosuke

IPC分类号： H05B33/08

CPC分类号： H05B33/0845 ,  H04B10/116 ,  H05B33/0821 ,  H05B33/0851 ,  H05B37/0272

摘要： An illumination light communication device includes a light source unit including light emitting elements; a power supply unit controlling a load current flowing through the light source unit to be maintained at a constant; a switch element connected in series to the light source unit; and a control unit configured to control on/off of the switch element to modulate a light intensity of illumination light from the light source unit such that a binary communication signal is superimposed on the illumination light. The control unit has a switching circuit to open/close a path between the light source unit and the power supply unit, controls on/off of the switching circuit based on a dimming signal to perform a dimming control on the light source unit by a PWM control, and allows the communication signal to be superimposed on the illumination light in synchronization with an ON time of the switching circuit.

摘要翻译： 照明光通信装置包括：包含发光元件的光源单元; 电源单元，控制流过所述光源单元的负载电流以保持恒定; 与光源单元串联连接的开关元件; 以及控制单元，被配置为控制开关元件的开/关以调制来自光源单元的照明光的光强度，使得二态通信信号叠加在照明光上。 控制单元具有用于打开/关闭光源单元和电源单元之间的路径的开关电路，基于调光信号控制开关电路的接通/断开，以通过PWM执行对光源单元的调光控制 控制，并且允许通信信号与开关电路的导通时间同步地叠加在照明光上。

公开(公告)号：EP2547173A3

公开(公告)日：2014-10-22

申请号：EP12176277.7

申请日：2012-07-13

申请人： Panasonic Corporation

发明人： Kamada, Masao ,  Shiohama, Eiji ,  Nishino, Hiroyuki ,  Maehara, Minoru ,  Hasitani, Yosiaki ,  Kondo, Yosuke

IPC分类号： H05B33/08 ,  H05B37/02 ,  H04B10/116

CPC分类号： H05B33/0845 ,  H04B10/116 ,  H05B33/0821 ,  H05B33/0851 ,  H05B37/0272

摘要： An illumination light communication device includes a light source unit including light emitting elements; a power supply unit controlling a load current flowing through the light source unit to be maintained at a constant; a switch element connected in series to the light source unit; and a control unit configured to control on/off of the switch element to modulate a light intensity of illumination light from the light source unit such that a binary communication signal is superimposed on the illumination light. The control unit has a switching circuit to open/close a path between the light source unit and the power supply unit, controls on/off of the switching circuit based on a dimming signal to perform a dimming control on the light source unit by a PWM control, and allows the communication signal to be superimposed on the illumination light in synchronization with an ON time of the switching circuit.

公开(公告)号：EP2547174A3

公开(公告)日：2014-10-22

申请号：EP12176282.7

申请日：2012-07-13

申请人： Panasonic Corporation

发明人： Kamada, Masao ,  Shiohama, Eiji ,  Nishino, Hiroyuki ,  Maehara, Minoru ,  Hasitani, Yosiaki ,  Kondo, Yosuke

IPC分类号： H05B33/08 ,  H05B37/02 ,  H04B10/116

CPC分类号： H05B33/0845 ,  H04B10/116 ,  H05B33/0821 ,  H05B33/0851 ,  H05B37/0272

摘要： An illumination light communication device includes a power supply unit controlling a load current in a light source unit to be maintained constant based on a dimming signal; an impedance unit series connected to the light source unit; a switch element parallel connected to the impedance unit to connect/disconnect the impedance unit with the light source unit; and a control unit controlling on/off of the switch element to modulate a light intensity of the light source unit such that a binary communication signal is superimposed on illumination light therefrom. The control unit controls the impedance of the impedance unit such that a difference between magnitudes of the load currents respectively when the pulse of the communication signal is superimposed and is not superimposed is maintained constant regardless of a dimming rate of the dimming signal in a range of a dimming rate equal to or greater than a predetermined level.

公开(公告)号：EP2547174A2

公开(公告)日：2013-01-16

申请号：EP12176282.7

申请日：2012-07-13

申请人： Panasonic Corporation

发明人： Kamada, Masao ,  Shiohama, Eiji ,  Nishino, Hiroyuki ,  Maehara, Minoru ,  Hasitani, Yosiaki ,  Kondo, Yosuke

IPC分类号： H05B33/08

CPC分类号： H05B33/0845 ,  H04B10/116 ,  H05B33/0821 ,  H05B33/0851 ,  H05B37/0272

摘要： An illumination light communication device includes a power supply unit controlling a load current in a light source unit to be maintained constant based on a dimming signal; an impedance unit series connected to the light source unit; a switch element parallel connected to the impedance unit to connect/disconnect the impedance unit with the light source unit; and a control unit controlling on/off of the switch element to modulate a light intensity of the light source unit such that a binary communication signal is superimposed on illumination light therefrom. The control unit controls the impedance of the impedance unit such that a difference between magnitudes of the load currents respectively when the pulse of the communication signal is superimposed and is not superimposed is maintained constant regardless of a dimming rate of the dimming signal in a range of a dimming rate equal to or greater than a predetermined level.

摘要翻译： 照明光通信装置包括：电源单元，其基于调光信号控制光源单元中的负载电流以保持恒定; 连接到光源单元的阻抗单元串联; 开关元件并联连接到所述阻抗单元以将所述阻抗单元与所述光源单元连接/断开; 以及控制单元，其控制所述开关元件的开/关以调制所述光源单元的光强度，使得二进制通信信号叠加在其上的照明光上。 控制单元控制阻抗单元的阻抗，使得当叠加通信信号的脉冲并且不叠加时分别在负载电流的大小之间的差异保持恒定，而不管调光信号的调光率如何，在 调光速度等于或大于预定水平。