TWI577236B - Led control circuit and system - Google Patents

Description

Light-emitting diode control circuit and control system

The invention relates to a control circuit and a control system, in particular to a control circuit and a control system of a light-emitting diode.

Referring to FIG. 1, a conventional control system for a light-emitting diode (LED) is applied to a server, and includes a control circuit 9 and K light-emitting diode units 8 respectively electrically connected to the control circuit 9, K is A positive integer is greater than 1, and the K light emitting diode units are used to display the operating states of K storage devices, such as hard disks, that the server has.

Each of the LED units 8 includes a resistor 81, a light-emitting diode 82, and an N-type metal oxide semiconductor (NMOS) 83 connected in series between a power source VCC and a ground point GND. The N-type MOS semiconductor 83 includes a drain terminal, a source terminal electrically connected to the ground point GND, and a gate terminal electrically connected to the control circuit 9. The LED 82 includes an anode terminal electrically connected to the resistor 81, and a cathode terminal electrically connected to the anode of the N-type metal oxide semiconductor 83. The control circuit 9 generates K control signals and outputs them to the gate terminals of the N-type MOS semiconductors 8 of the K light-emitting diode units 8 to respectively control the operation of the N-type MOS semiconductors 83. Between conduction.

Taking K=9 as an example, the control system of the light-emitting diode A total of nine light-emitting diode units 9 are included, and the control circuit 9 generates nine control signals S1 to S9. The control circuit 9 controls the nine N-type MOS semiconductors to be turned on or off, respectively, by changing the logic values of the nine control signals S1 S S9, so that nine on-current flows respectively flow through the nine The LEDs 82 are respectively illuminated or not illuminated to respectively display the operational states of the nine storage devices of the server. Therefore, when K is larger, the number of control signals between the control circuit 9 and the light-emitting diode units 8 is also increased, so that the control circuit must have more input and output pins ( Input/Output Pin) to generate the corresponding control signal.

Accordingly, it is an object of the present invention to provide a control circuit and control system for a light-emitting diode that effectively reduces the number of input and output pins.

Therefore, the control system of the light-emitting diode of the present invention comprises N light-emitting diode units and a control circuit.

Defining the N light-emitting diode units as the [i, j] light-emitting diode units, respectively, [i, j] are sequentially [1, 1], [2, 1] ... [p, 1], [1,2], [2,2]...[p,2]...[1,q],[2,q]...[m,n]. Where p, q, i, j, m, n are all positive integers, and p>1, q>1, i=1, 2...p, j=1, 2...q, 1≦m≦p, 1≦ N≦q, N=p*(n-1)+m. Each of the light emitting diode units is operated between an activated state and a closed state, and the light emitting diode unit does not emit light when the light emitting diode unit is operated in the off state.

The control circuit is electrically connected to the N light emitting diode units, and Generates p X-axis control signals and q Y-axis control signals. The p X-axis control signals are respectively defined as an i-th X-axis control signal, and the q Y-axis control signals are respectively defined as a j-th Y-axis control signal. The control circuit outputs the i-th X-axis control signal and the j-th Y-axis control signal to the [i, j]th light-emitting diode unit respectively to control the N light-emitting diode units respectively Operate between the startup state and the shutdown state. The control circuit further controls the [i, 1], [i, 2], ... [i, q] light emitting diode units to sequentially rotate and cycle according to the cyclic sequence of j=1, 2...q, respectively. The operation is in the startup state, and the time interval between the operation of the same LED unit in the adjacent secondary activation state is a predetermined time.

In some implementations, wherein, when the control circuit is produced When the logical value of the generated jth Y-axis control signal is a first logic value, controlling the corresponding [i, j] LED components to operate in the startup state, and the control circuit generates The logical value of the i-th X-axis control signal controls whether the [i, j]th light-emitting diode unit emits light or does not emit light. When the logic value of the jth Y-axis control signal generated by the control circuit is a second logic value different from the first logic value, the corresponding [i, j] LED components operate at The off state. The predetermined time is no more than 200 milliseconds.

In some implementations, wherein the [i, j] light dipoles The body unit includes a resistor, a light emitting diode, and a switching element. The resistor includes a first end electrically connected to a power source and a second end. The light emitting diode includes an anode end electrically connected to the second end of the resistor, and a cathode end.

The switching element includes an anode electrically connected to the light emitting diode An extreme first end, a second end electrically connected to the control circuit and receiving the corresponding j-th Y-axis control signal, and a control for electrically connecting the control circuit and receiving the corresponding i-th X-axis control signal end. When the logical value of the jth Y-axis control signal is the second logic value, or when the logical value of the j-th Y-axis control signal is the first logic value and the logic of the i-th X-axis control signal When the value is a third logic value, the corresponding switching element is not turned on, so that the corresponding light emitting diode does not emit light. When the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a fourth logic value different from the third logic value, the corresponding switch The component is turned on such that the corresponding light emitting diode emits light.

Or in other implementations, wherein the [i, j] hairs The photodiode unit includes a light emitting diode. The light emitting diode includes an anode end electrically connected to the control circuit and receiving the corresponding i-th X-axis control signal, and a cathode end electrically connected to the control circuit and receiving the corresponding j-th Y-axis control signal .

When the logical value of the jth Y-axis control signal is the second logic When the value is set, or when the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a third logic value, the corresponding light-emitting diode Does not shine.

When the logical value of the jth Y-axis control signal is the first logic When the value of the i-th X-axis control signal is a fourth logic value different from the third logic value, the corresponding light-emitting diode emits light.

Or in some implementations, wherein the [i, j] hair The photodiode unit includes a resistor, a first switching element, and a light emitting diode a pole body and a second switching element. The resistor includes a first end electrically connected to a power source and a second end. The light emitting diode comprises an anode end and a cathode end.

The first switching element includes a first electrically connected to the resistor a first end of the two ends, a second end electrically connected to the anode end of the LED, and a control end electrically connected to the control circuit and receiving the corresponding j-th Y-axis control signal. The second switching element includes a first end electrically connected to the cathode end of the light emitting diode, a second end electrically connected to a grounding point, and an electrical connection connecting the control circuit and receiving the corresponding i-th X-axis The control end of the control signal.

When the logical value of the jth Y-axis control signal is the second logic When the value is set, the corresponding first switching element is not turned on, so that the corresponding light emitting diode does not emit light.

When the logical value of the jth Y-axis control signal is the first logic When the value of the i-th X-axis control signal is a third logic value, the corresponding first switching element is turned on, and the corresponding second switching element is not turned on, so that the corresponding light-emitting diode is not Glowing.

When the logical value of the jth Y-axis control signal is the first logic When the value of the i-th X-axis control signal is a fourth logic value different from the third logic value, the corresponding first switching element and the corresponding second switching element are turned on, so that the The corresponding light-emitting diode emits light.

The effect of the present invention is that the p X axes are controlled by the control circuit The control signal and the q Y-axis control signals are output to the N light-emitting diode units in a matrix-like wiring manner, and are cycled according to j=1, 2...q In sequence, the N light emitting diode units are controlled to rotate in sequence and cyclically operate in the activated state, and the total number of the p X axis control signals and the q Y axis control signals is reduced.

1‧‧‧Control circuit

21~29‧‧‧Lighting diode unit

X1~X3‧‧‧X axis control signal

Y1~Y3‧‧‧Y axis control signal

Xi‧‧‧X-axis control signal

Yj‧‧‧Y axis control signal

31‧‧‧Resistors

32‧‧‧Lighting diode

33‧‧‧Switching elements

34‧‧‧First switching element

35‧‧‧Second switching element

VCC‧‧‧ power supply

GND‧‧‧ Grounding point

8‧‧‧Lighting diode unit

81‧‧‧Resistors

82‧‧‧Lighting diode

83‧‧‧N type MOS

S1~S9‧‧‧ control signal

9‧‧‧Control circuit

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a circuit diagram illustrating a conventional control system for a light-emitting diode; FIG. 2 is a block diagram. A first embodiment of a control system for a light-emitting diode of the present invention; FIG. 3 is a circuit diagram illustrating a light-emitting diode unit in the first embodiment of the present invention; and FIG. 4 is a circuit diagram illustrating a first embodiment of the present invention A light emitting diode unit in the second embodiment; and FIG. 5 is a circuit diagram illustrating a light emitting diode unit in a third embodiment of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figure 2, a first embodiment of the control system for a light-emitting diode of the present invention is applicable to a computer system, such as a server including N storage devices. The control system of the light emitting diode includes N light emitting diode (LED) units and a control circuit 1. Where N is a positive integer and greater than 1, The control circuit 1 is electrically connected to the N light emitting diode units, and respectively controls the N light emitting diode units to emit light or not to respectively display the operating states of the N storage devices of the server. For example, when one of the N light-emitting diode units emits light, it indicates that the storage device corresponding to the light-emitting diode works normally, and vice versa, when the one of the N light-emitting diode units is not When the light is emitted, it means that the storage device corresponding to the light-emitting diode unit is abnormal, but not limited thereto.

Defining the N light emitting diode units as the [i, j] The photodiode unit, [i, j] is sequentially [1, 1], [2, 1]...[p,1], [1,2], [2,2]...[p,2]...[ 1, q], [2, q]...[m,n]. Where p, q, i, j, m, n are all positive integers, and p>1, q>1, i=1, 2...p, j=1, 2...q, 1≦m≦p, 1≦ N≦q, N=p*(n-1)+m. For convenience of explanation, in the present embodiment, N=9, p=3, q=3, and m=3, n=3, and satisfy N=p*(n-1)+m=3. *2+3=9 is an example for explanation. The N light-emitting diode units 21 to 29 are the first [1, 1], the [2, 1], the [3, 1], the [1, 2], and the [2, 2, respectively. ], [3, 2], [1, 3], [2, 3], [3, 3] light-emitting diode units, respectively, as shown in Figure 2, 21~29. In other embodiments, if N=9, then p and q may also be 4 and 3, respectively, and m=1, n=3, to satisfy N=p*(n-1)+m=4*2+. 1=9, at this time, the N light-emitting diode units are the first [1, 1], the [2, 1], the [3, 1], the [4, 1], and the [1, 2], [2, 2], [3, 2], [4, 2], [1, 3] light-emitting diode units.

Referring to FIG. 3, each of the LED units 21-29 operates in a Between the startup state and a shutdown state, when the LED unit 21-29 When operating in the off state, the light emitting diode units 21 to 29 do not emit light. Each of the light emitting diode units 21 to 29 includes a resistor 31, a light emitting diode 32, and a switching element 33. The resistor 31 includes a first end electrically connected to a power source VCC, and a second end. The LED 32 includes an anode end electrically connected to the second end of the resistor 31, and a cathode end. The switching element 33 includes a first end electrically connected to the cathode end of the LED body 32, a second end electrically connected to the control circuit 1, and a control end electrically connected to the control circuit 1. In this embodiment, the switching element 33 is an N-type metal oxide semiconductor (NMOS), and in other embodiments, the switching element 33 may also be a P-type metal oxide semiconductor (PMOS), or other types may be affected. Controlled switching element.

Referring to FIG. 2 and FIG. 3, the control circuit 1 generates p X-axis controls. Signal Xi and q Y-axis control signals Yj. The p X-axis control signals Xi are respectively defined as an i-th X-axis control signal, and the q-axis control signals Yj are respectively defined as a j-th Y-axis control signal. In the present embodiment, since p=3, q=3, i=1, 2, 3, and j=1, 2, 3, the control circuit 1 generates three X-axis control signals X1 to X3 and three Ys. Axis control signals Y1~Y3. The three X-axis control signals X1, X2, and X3 are the first, second, and third X-axis control signals, respectively. The three Y-axis control signals Y1, Y2, and Y3 are the first, second, and third Y-axis control signals, respectively. The control circuit 1 can be, for example, a Complex Programmable Logic Device (CPLD), and the CPLD includes a plurality of General Purpose Input/Output (GPIO) pins, and the p X-axis control signals Xi And each of the q Y-axis control signals Yj It needs to be output via a different GPIO pin. In other words, the sum of p and q is the number of control signals that the GPIO pin needs to transmit.

The control circuit 1 outputs the i-th X-axis control signal and the j-th The Y-axis control signals are respectively output to the [i, j]th light-emitting diode unit, so as to control the N-light-emitting diode units 21 to 29 to operate between the activated state and the closed state, respectively. For example, in the present embodiment, since j=1, 2, 3, and i=1, 2, 3, the control circuit 1 outputs the first X-axis control signal correspondingly to the [1, 1] The control terminals of the switching elements 33 of the [1, 2] and [1, 3] light-emitting diode units 21, 24, 27 are provided. The control circuit 1 also outputs the first Y-axis control signal Y1 to the [1, 1], [2, 1], [3, 1] LED units 21, 22, The second end of the switching element 33 of 23.

The jth Y-axis control signal generated by the control circuit 1 The logical value is a second logical value. If the logic is 1, the corresponding [i, j] LED units operate in the off state. For example, when the logical value of the first Y-axis control signal is logic 1, then the [1, 1]th, the [2, 1]th, the [3, 1] second light The voltage of the second end of the switching element 33 of the polar body unit 21, 22, 23 is logic 1, and at this time, the corresponding switching element 33 is not turned on, so that the corresponding light-emitting diode 32 does not emit light.

The jth Y-axis control signal generated by the control circuit 1 The logical value is a first logical value different from the second logical value. If the logic 0 is 0, the corresponding [i, j] LED units are controlled to operate in the startup state. And the control circuit 1 controls the operation of the [i, j]th light-emitting diode unit by the logic value of the generated ith X-axis control signal The light-emitting diode 32 of the startup state emits light or does not emit light.

When the logical value of the jth Y-axis control signal is the first logic The logic value of the i-th X-axis control signal is a third logic value. If the logic element is 0, the corresponding switching element 33 is not turned on, so that the corresponding LED diode 32 does not emit light.

When the logical value of the jth Y-axis control signal is the first logic And the logical value of the i-th X-axis control signal is a fourth logic value different from the third logic value. When the logic 1 is turned on, the corresponding switching element 33 is turned on, so that the corresponding LED is turned on. 32 light.

For example, when the logic value of the first Y-axis control signal When it is logic 0, and the logical values of the first, second, and third X-axis control signals are logic 0, 1, and 0, respectively, the [1, 1], the [3, 1 The voltages of the control terminal and the second terminal of the switching element 33 of the LED unit 21, 23 are logic 0 and logic 0, respectively, and the second [2, 1] LED unit 22 The voltages of the control terminal and the second terminal of the switching element 33 are logic 1 and logic 0, respectively. In this case, the [1, 1]th, the [3, 1] LED units 21, 23 The corresponding switching element 33 is not turned on, so that the light-emitting diodes corresponding to the [1, 1]th, the [3, 1] light-emitting diode units 21, 23 do not emit light. The switching element 33 corresponding to the [2, 1] light-emitting diode unit 22 is turned on, so that the light-emitting diodes 32 corresponding to the [2, 1] light-emitting diode units 22 emit light.

The control circuit 1 is also divided according to the cyclic sequence of j=1, 2...q Do not control the [i,1], the [i,2]...the [i,q]th light-emitting diode unit to sequentially rotate and cyclically operate in the activated state, and the same light-emitting diode unit The time interval between 21 and 29 operations in the adjacent secondary activation states is a predetermined time.

For example, suppose the first [1, 1] light-emitting diode unit The light-emitting diode 32 is required to continuously emit light for 0.36 seconds, and the other eight light-emitting diode units 22 to 29 do not emit light in the 0.36 second. The control circuit 1 can continuously output the first, the second, and the third X-axis control signals with logic values of logic 1, 0, and 0 at 0 to 0.06 seconds, and continuously output the first one. The logical value of the second and third Y-axis control signals is logic 0, 1, and 1. The control circuit 1 continues to output the first, the second, and the third X-axis control signals with logic values of logic 0, 0, and 0 at intervals of 0.06 to 0.12 seconds, and continuously outputs the first one. The logical values of the second and third Y-axis control signals are logic 1, 0, and 1. The control circuit 1 continuously outputs the first, the second, and the third X-axis control signals with logic values of logic 0, 0, and 0 at 0.12 to 0.18 seconds, and continuously outputs the first one. The logical value of the second and third Y-axis control signals is logic 1, 1, and 0. The control circuit 1 also outputs X-axis control signals X1 to X3 and Y-axis control signals Y1 to Y3 which are the same as 0 to 0.06 seconds at 0.18 to 0.24 seconds. The control circuit 1 also outputs the same X-axis control signals X1 to X3 and Y-axis control signals Y1 to Y3 at 0.06 to 0.12 seconds at 0.24 to 0.3 seconds. The control circuit 1 also outputs X-axis control signals X1 to X3 and Y-axis control signals Y1 to Y3 which are the same as 0.12 to 0.18 seconds at 0.3 to 0.36 seconds. In this example, the predetermined time is 180 milliseconds, and because of the phenomenon of persistence of the human eye, the result observed by the human eye is that the [1, 1] light-emitting diode unit continuously emits 0.36. second.

In this embodiment, the predetermined time is not more than 200 milliseconds. For example, it is 180 milliseconds, and in other embodiments, the predetermined time may be other values as long as the predetermined time is sized to cause visual persistence.

It is specifically added that the p generated by the control circuit 1 The number of X-axis control signals Xi and the q Y-axis control signals is related to the connection mode between the N light-emitting diode units. In this embodiment, the N LED units 21-29 are connected in a square array with the p X axis control signals Xi and the q Y axis control signals, for example, N=9, p= 3, q=3, in the prior art, a total of nine control signals are required to control nine light-emitting diode units, but in this embodiment, only six control signals are needed to control nine light-emitting diodes. Units 21-29, for the purpose of reducing the number of control signals, in other words, to reduce the number of output input pins of the control circuit 1. In other embodiments, if N=9, p=4, q=3, m=1, n=3, the N light emitting diode units are not arranged in a square matrix, but are similar to each other. The arrangement of the matrix, which requires only seven control signals to control the nine LED units, has the same advantages of reducing the number of control signals. In addition, it is emphasized that the N light-emitting diode units are arranged in a square matrix or a matrix-like manner, and do not refer to the actual position of the N light-emitting diode units in the server, but a connection relationship between the N LED units and the p X-axis control signals Xi of the control circuit 1 and the q Y-axis control signals.

Referring to FIG. 2 and FIG. 4, the control system of the light-emitting diode of the present invention The second embodiment is substantially similar to the first embodiment, except that each of the LED units 21-29 includes a light-emitting diode 32, and the [i, j] light-emitting diodes The LED unit 32 of the polar body unit includes an anode end electrically connected to the control circuit 1 and receiving the corresponding i-th X-axis control signal, and an electrical connection of the control circuit 1 and receiving the corresponding j-th The cathode end of the Y-axis control signal.

When the logical value of the jth Y-axis control signal is the second logic When the value is edited, or when the logical value of the jth Y-axis control signal is the first logic value and the logical value of the i-th X-axis control signal is the third logic value, the corresponding light-emitting diode 32 does not shine.

When the logical value of the jth Y-axis control signal is the first logic When the logical value of the i-th X-axis control signal is the fourth logical value, the corresponding light-emitting diode 32 emits light.

Referring to FIG. 2 and FIG. 5, the control system of the light-emitting diode of the present invention The third embodiment is substantially similar to the first embodiment, except that the [i, j] LED unit includes a resistor 31, a first switching element 35, and a light emitting unit. The diode 32 and a second switching element 34.

The resistor 31 includes a first electrical connection to a power supply VCC End, and a second end. The first switching element 35 includes a first end electrically connected to the second end of the resistor 31, a second end, and a control for electrically connecting the control circuit 1 and receiving the corresponding j-th Y-axis control signal end. The LED 32 includes an anode end electrically connected to the second end of the first switching element 35, and a cathode end. The second switching element 34 includes a first end electrically connected to the cathode end of the LED 32, and an electrical connection and a ground. a second end of the point GND, and a control terminal electrically connected to the control circuit 1 and receiving the corresponding i-th X-axis control signal. In this embodiment, the first switching element 34 is an N-type metal oxide semiconductor (NMOS), and the second switching element 35 is a P-type metal oxide semiconductor (PMOS), but not limited thereto.

When the logical value of the jth Y-axis control signal is the second logic When the value is set, the corresponding first switching element 35 is not turned on, so that the corresponding light-emitting diode 32 does not emit light.

When the logical value of the jth Y-axis control signal is the first logic When the value of the i-th X-axis control signal is the third logic value, the corresponding first switching element 35 is turned on, and the corresponding second switching element 34 is not turned on, so that the corresponding light-emitting diode Body 32 does not illuminate.

When the logical value of the jth Y-axis control signal is the first logic When the value of the i-th X-axis control signal is the fourth logic value, the corresponding first switching element 35 and the corresponding second switching element 34 are turned on, so that the corresponding light-emitting diode 32 light.

In summary, the control circuit 1 will p the X-axis control signals The number Xi and the q Y-axis control signals Yj are correspondingly output to the N light-emitting diode units in a matrix-like wiring manner, and the N light-emitting diodes are controlled according to a cyclic sequence of j=1, 2...q The body unit sequentially and cyclically operates in the startup state, and the time interval between the operation of the same LED unit in the adjacent secondary activation state is the predetermined time, and the p X axes can be reduced. The control signal and the total number of the q Y-axis control signals are indeed capable of achieving the object of the present invention.

However, the above is only the preferred embodiment of the present invention. The scope of the present invention is not limited by the scope of the invention, and the equivalent equivalents and modifications of the scope of the present invention are still within the scope of the invention.

1‧‧‧Control circuit

21~29‧‧‧Lighting diode unit

X1~X3‧‧‧X axis control signal

Y1~Y3‧‧‧Y axis control signal

Claims (10)

A control system for a light-emitting diode comprises: N light-emitting diode units, wherein the N light-emitting diode units are respectively defined as [i, j] light-emitting diode units, [i, j] sequentially For [1,1], [2,1]...[p,1],[1,2],[2,2]...[p,2]...[1,q],[2,q]...[ m, n], where p, q, i, j, m, n are all positive integers, and p>1, q>1, i=1, 2...p, j=1, 2...q, 1≦m ≦p,1≦n≦q, N=p*(n-1)+m, each of the light emitting diode units operates between an activated state and a closed state, when the light emitting diode unit operates In the off state, the LED unit does not emit light; and a control circuit electrically connects the N LED units and generates p X axis control signals and q Y axis control signals to define the p X The axis control signals are respectively an i-th X-axis control signal, and the q-axis control signals are respectively defined as a j-th Y-axis control signal, and the control circuit outputs the i-th X-axis control signal and the j-th Y-axis The control signals are respectively output to the [i, j] LED units to control the N LED units to operate in the startup state and the off Between the states, the control circuit also controls the [i, 1], [i, 2], ... [i, q] LED units according to the sequence of j=1, 2...q, respectively. The sequence is alternately and cyclically operated in the activated state, and the time interval between the operation of the same light-emitting diode unit between adjacent secondary activation states is a predetermined time. The control system of the light-emitting diode according to claim 1, wherein the logical value of the j-th Y-axis control signal generated by the control circuit is one a logic value, controlling the corresponding [i, j] LED unit to operate in the startup state, and the control circuit controls the logic value of the i-th X-axis control signal generated The [i, j] light emitting diode units emit light or not, when the logic value of the jth Y-axis control signal generated by the control circuit is a second logic value different from the first logic value, The corresponding [i, j] light emitting diode units are operated in the off state, and the predetermined time is not more than 200 milliseconds. The control system of the light-emitting diode according to claim 2, wherein the [i, j] light-emitting diode unit comprises: a resistor, a first end electrically connected to a power source, and a first a two-terminal; a light-emitting diode comprising an anode end electrically connected to the second end of the resistor, and a cathode end; and a switching element comprising a first end electrically connected to the cathode end of the light-emitting diode a second end electrically connected to the control circuit and receiving the corresponding j-th Y-axis control signal, and a control terminal electrically connected to the control circuit and receiving the corresponding i-th X-axis control signal When the logical value of the j Y-axis control signals is the second logic value, or when the logical value of the j-th Y-axis control signal is the first logic value and the logical value of the i-th X-axis control signal is one In the third logic value, the switching element is not turned on, so that the LED does not emit light, when the logic value of the jth Y-axis control signal is the first logic value and the logic of the i-th X-axis control signal When the value is a fourth logic value different from the third logic value, the switching element is turned on, such that Light-emitting diodes emit light. The control system of the light-emitting diode according to claim 2, wherein the [i, j] light-emitting diode unit comprises a light-emitting diode, the light-emitting diode comprises an electrical connection and the control circuit Receiving a corresponding anode end of the i-th X-axis control signal, and a cathode end electrically connected to the control circuit and receiving the corresponding j-th Y-axis control signal, when the logical value of the j-th Y-axis control signal When the second logic value is used, or when the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a third logic value, the illumination The polar body does not emit light, when the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a fourth logic value different from the third logic value The light emitting diode emits light. The control system of the light-emitting diode according to claim 2, wherein the [i, j] light-emitting diode unit comprises: a resistor, a first end electrically connected to a power source, and a first a first switching element, comprising: a first end electrically connected to the second end of the resistor, a second end, and an electrical connection to the control circuit and receiving the corresponding j-th Y-axis control signal a control terminal; an illuminating diode comprising an anode end electrically connected to the second end of the first switching element, and a cathode end; and a second switching element comprising a cathode electrically connected to the illuminating diode a first end of the terminal, a second end electrically connected to a ground point, and a second electrically connected to the control circuit and receiving the corresponding i-th X-axis control signal a control terminal, when the logic value of the jth Y-axis control signal is the second logic value, the first switching element is not turned on, so that the light-emitting diode does not emit light, when the j-th Y-axis control signal When the logic value is the first logic value and the logic value of the ith X-axis control signal is a third logic value, the first switching element is turned on, and the second switching element is not turned on, so that the light emitting diode is not Illuminating, when the logical value of the jth Y-axis control signal is the first logical value and the logical value of the i-th X-axis control signal is a fourth logical value different from the third logical value, the first A switching element and the second switching element are both turned on to cause the light emitting diode to emit light. A control circuit for a light-emitting diode is adapted to electrically connect N light-emitting diode units, and the N light-emitting diode units are respectively defined as [i, j] light-emitting diode units, [i, j] In order, [1,1], [2,1]...[p,1],[1,2],[2,2]...[p,2]...[1,q],[2,q] ...[m,n], where p, q, i, j, m, n are all positive integers, and p>1, q>1, i=1, 2...p, j=1, 2...q,1 ≦m≦p,1≦n≦q, N=p*(n-1)+m, each light-emitting diode unit operates between an activated state and a closed state when the light-emitting diode unit operates In the off state, the LED unit does not emit light, and the control circuit electrically connects the N LED units and generates p X axis control signals and q Y axis control signals to define the p Xs. The axis control signals are respectively an i-th X-axis control signal, and the q-axis control signals are respectively defined as a j-th Y-axis control signal, and the control circuit will The i-th X-axis control signal and the j-th Y-axis control signal are respectively output to the [i, j]th light-emitting diode unit to control the N-light-emitting diode units to operate respectively. Between the state and the closed state, the control circuit further controls the [i, 1], [i, 2], ... [i, q] light-emitting two according to the sequence of j=1, 2...q. The polar body unit sequentially and cyclically operates in the activated state, and the time interval between the operation of the same light emitting diode unit in the adjacent secondary activation state is a predetermined time. The control circuit of the light-emitting diode according to claim 6, wherein when the logical value of the j-th Y-axis control signal generated by the control circuit is a first logic value, the corresponding [i, j] LED units are operated in the startup state, and the control circuit controls the [i, j] LEDs by the logic value of the generated i-th X-axis control signal The body unit emits light or does not emit light, and when the logical value of the jth Y-axis control signal generated by the control circuit is a second logic value different from the first logic value, the corresponding [i, j]th The light emitting diode unit operates in the off state, the predetermined time being no more than 200 milliseconds. The control circuit of the light-emitting diode according to claim 7, wherein each of the light-emitting diode units comprises a resistor, a light-emitting diode, and a switching element, the resistor comprising a first electrically connected power source And a second end, the light emitting diode includes an anode end electrically connected to the second end of the resistor, and a cathode end, the switching element includes a first end electrically connected to the cathode end of the light emitting diode One end, a second end electrically connected to the control circuit, and a control end electrically connected to the control circuit, wherein The control circuit outputs the jth Y-axis control signal to the second end of the corresponding [i,j]th light-emitting diode unit, and outputs the i-th X-axis control signal to the corresponding The control terminal of the [i, j]th light-emitting diode unit, when the logical value of the j-th Y-axis control signal is the second logic value, or when the logical value of the j-th Y-axis control signal When the logic value of the i-th X-axis control signal is a third logic value, the corresponding switching element is not turned on, so that the corresponding light-emitting diode does not emit light, when the j-th When the logic value of the Y-axis control signal is the first logic value and the logic value of the ith X-axis control signal is a fourth logic value different from the third logic value, the corresponding switching element is turned on, so that the The corresponding light-emitting diode emits light. The control circuit of the light-emitting diode according to claim 7, wherein each of the light-emitting diode units comprises a light-emitting diode, the light-emitting diode comprises an anode end electrically connected to the control circuit, and an electrical connection a cathode end of the control circuit, wherein the control circuit outputs the i-th X-axis control signal to the anode end of the corresponding [i,j]th light-emitting diode unit, and the j-th Y-axis And outputting a control signal to the cathode end of the corresponding [i, j]th light-emitting diode unit, when the logical value of the j-th Y-axis control signal is the second logic value, or when the j-th When the logic value of the Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a third logic value, the corresponding LED does not emit light, when the j-th Y-axis The logical value of the control signal is the first logical value And when the logic value of the i-th X-axis control signal is a fourth logic value different from the third logic value, the corresponding light-emitting diode emits light. The control circuit of the light-emitting diode according to claim 7, wherein each of the light-emitting diode units comprises a resistor, a first switching element, a light-emitting diode, and a second switching element, the resistor comprising a first end electrically connected to a power source, and a second end, the first switching element comprising a first end electrically connected to the second end of the resistor, a second end, and an electrical connection to the control circuit a control terminal, the light emitting diode includes an anode end electrically connected to the second end of the first switching element, and a cathode end, the second switching element including a first end electrically connecting the cathode end of the light emitting diode a second end connected to a grounding point, and a control end electrically connected to the control circuit, wherein when the logical value of the jth Y-axis control signal is the second logical value, the corresponding a switching element is not turned on, so that the corresponding LED does not emit light, when the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal is a When the three logic values are three, the corresponding first switching element is turned on, The corresponding second switching element is not turned on, so that the corresponding LED does not emit light, when the logical value of the jth Y-axis control signal is the first logic value and the logic value of the i-th X-axis control signal When the fourth logic value is different from the third logic value, the corresponding first switching element and the corresponding second switching element are both turned on, so that the corresponding light emitting diode emits light.