COLORFUL LIGHT APPARATUS

• US 20170273163A1
• Filed: 06/03/2017
• Published: 09/21/2017
• Est. Priority Date: 12/15/2014
• Status: Active Grant

• Current Assignee: Xiaohua Luo
• Original Assignee: Xiaohua Luo
• Inventors: LUO, Xiaohua
• Granted Patent: US 10,129,959 B2
• Time in Patent Office: Days
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/46 having LEDs disposed in parallel lines
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources
• CPC Class Codes: H05B 47/185 via power line carrier transmission

Abstract

A colorful light apparatus controlled by input edge signals from a power supply line includes a plurality of LED group, an edge signal generator configured to generate edge signals and output edge signals to the power supply line, and LED drivers configured to drive LED groups based on the edge signals from the power supply line corresponding to each LED group. The edge signal is generated by the controllable switch switching between on and off based on output signals of a control circuit, and is carried to the power supply line. The LED modules are configured to be driven to obtain a plurality of lighting modes, wherein each LED module and its drivers can be connected to the power supply line directly. The structures of the circuits are simple and of low cost. Moreover, various effects of decorations can be achieved by programming using a Microprocessor Control Unit (MCU).

Claims

1. A colorful light apparatus based on edge signals from a power supply line, the apparatus comprising:

an edge signal generator configured to generate the edge signals and output the edge signals to the power supply line;

a plurality of light-emitting diode (LED) modules, where each LED module comprises an LED group, and an LED driver to drive the LED group based on the edge signals from the power supply line.

2. The apparatus of claim 1, wherein the edge signal generator comprises a controllable switch and a control circuit connected to the control port of the controllable switch, wherein an input port of the controllable switch connects to a current source, and an output port of the controllable switch connects to the power supply line.

3. The apparatus of claim 2, wherein the output port of the controllable switch is connected to a pull-down circuit.

4. The apparatus of claim 1, wherein the LED driver comprise:

an edge-triggered computing unit configured to be triggered to perform computing by the edge signals from the power supply line, and configured to output computing results;

a charging unit configured to supply power to the edge-triggered computing unit based on the edge signals from the power supply line, where the charging unit is charged when the edge signal from the power supply line is at a high voltage, and the charging unit is discharged when the edge signal from the power supply line is at a low voltage;

an initialization unit configured to initialize the edge-triggered computing unit based on the voltage of the power supplied by the charging unit.

5. The apparatus of claim 4, wherein the edge-triggered computing unit is configured to perform arithmetic or logic computations triggered by the edge signal from the power supply line, and to output the computing results.

6. The apparatus of claim 5, wherein the edge-triggered computing unit comprises n flip-flops, and one k-bit arithmetic and logic unit, and outputs the computing results via the outputs of the flip-flops.

7. The apparatus of claim 6, wherein the flip-flops are D flip-flops.

8. The apparatus of claim 7, the edge-triggered computing unit comprises n D flip-flops connected in parallel, and one k-bit arithmetic and logic unit, then equals the k in value, and outputs the computing results via the outputs of the n flip-flops, wherein:

the D inputs of the n D flip-flops are connected to the outputs of the arithmetic and logic unit, one to one and bit to bit, low bit to low bit and high bit to high bit;

the reset inputs of the n D flip-flops are connected to the initialization unit;

the clock inputs are connected to the power supply line;

the group A inputs of the arithmetic and logic unit are connected to the Q outputs of the D flip-flops, bit to bit, low bit to low bit and high bit to high bit; and

the group B inputs of the arithmetic and logic unit are configured to external pattern control parameter.

9. The apparatus of claim 4, wherein the edge-triggered computing unit is an edge counting unit configured to count edges of the edge signals from the power supply line, and to output counting results.

10. The apparatus of claim 9, wherein the edge counting unit comprises a plurality of flip-flops, and outputs the counting results via the outputs of the flip-flops.

11. The apparatus of claim 10, wherein the flip-flop are D flip-flop.

12. The apparatus of claim 11, wherein the edge counting unit comprises a plurality of D flip-flops connected in series, and outputs the counting results via the outputs of D flip-flops, wherein:

the clock input of the first D flip-flop is coupled to the power supply line, and the clock input of a D flip-flop is connected to the QB output of its preceding D flip-flop among two adjacent D flip-flops;

the reset input of each D flip-flop is connected to the initialization unit, and for each D flip-flop its QB output is connected to its D input;

the set or reset signal input of each D flip-flop is connected to the initialization unit, and its clock signal input is coupled to the power supply line.

13. The apparatus of claim 4, wherein the edge-triggered computing unit is an edge-triggered shift unit, configured to shift bits triggered by the edge signals from the power supply line, and to output the results of shifting.

14. The apparatus of claim 13, wherein the edge-triggered shift unit comprises at least two flip-flops and outputs the results of the shift operation via the outputs of the flip-flops.

15. The apparatus of claim 14, the edge-triggered shift unit comprises at least two D flip-flops connected in series and outputs the results of the shift operation via the outputs of the D flip-flops, wherein:

the D input of the first D flip-flop is connected to the Q output of the last D flip-flop, the D input of the D flip-flops is connected to the Q output of its preceding D flip-flop among two adjacent D flip-flops;

the reset inputs or the set inputs of each D flip-flops are connected to the initialization unit, and the clock inputs of each D flip-flops are connected to the power supply line.

16. The apparatus of claim 4, wherein:

the charging unit comprises a unidirectional conduction component;

the anode of the unidirectional conduction component is connected to the power supply line;

the cathode of the unidirectional conduction component is connected to ground via a power storage component;

the charging unit supplies power to the edge-triggered computing unit and the initialization unit via the cathode.

17. The apparatus of claim 16, wherein:

the LED color module comprises n LEDs corresponding to n outputs of the LED driver;

and the LED color light is one of A(n,n) permutations type connections.

18. The apparatus of claim 17, wherein:

the LED driver comprises LED driver circuit;

the input of the LED driver circuit connect to the output of edge-triggered computing unit, and the output of the LED driver circuits connect to the corresponding LEDs to drive those LEDs.

19. A light-emitting system comprising:

a light apparatus configured to be controlled by edge signals from a power supply line, the apparatus comprising;

an edge signal generator configured to generate the edge signals and output the edge signals to the power supply line; and

a plurality of light-emitting diode (LED) modules having a plurality of colors, where each LED module comprises;

an LED group; and

an LED driver configured to drive the LED group based on the edge signals from the power supply line.

20. The system of claim 19, wherein the edge signal generator comprises a controllable switch and a control circuit connected to the control port of the controllable switch, wherein an input port of the controllable switch connects to a current source, and an output port of the controllable switch connects to the power supply line.