CN106612580B - The control circuit and control system of light emitting diode - Google Patents
The control circuit and control system of light emitting diode Download PDFInfo
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- CN106612580B CN106612580B CN201510705364.4A CN201510705364A CN106612580B CN 106612580 B CN106612580 B CN 106612580B CN 201510705364 A CN201510705364 A CN 201510705364A CN 106612580 B CN106612580 B CN 106612580B
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Abstract
A kind of control system of light emitting diode includes N number of light emitting diode and a control circuit.N number of light emitting diode is respectively defined as [i, j] a light emitting diode, and operates between a starting state and a closed state.Generated total p and respectively i-th X-axis are controlled signal by the control circuit, and total q and respectively j-th Y-axis control signal, respectively correspond output to [i, j] a light emitting diode.The control circuit is also according to j=1, the circular order of 2 ... q, it controls N number of light emitting diode and sequentially operates in the starting state in turn and cyclically, and time interval of the same light emitting diode operation between adjacent secondary starting state is a predetermined time, to achieve the purpose that reduce the quantity of control signal.
Description
Technical field
The invention relates to a kind of control circuit and control systems, particularly relate to a kind of control circuit of light emitting diode
And control system.
Background technique
Refering to fig. 1, a kind of control system of known light emitting diode (LED) is suitable for a server, and includes a control
Circuit 9 and K processed are electrically connected the light emitting diode 8 of the control circuit 9, and K is positive integer and is greater than 1, and this K hair
Optical diode unit to show K storage device, such as hard disk possessed by the server, operating state.
Each light emitting diode 8 includes the resistor being sequentially series between a power supply VCC and a grounding point GND
81, a light emitting diode 82 and a N-type metal-oxide-semiconductor (MOS) (NMOS) 83.The N-type metal-oxide-semiconductor (MOS) 83 includes a drain end, one
Be electrically connected grounding point GND source terminal and one be electrically connected the control circuit 9 gate terminal.The light emitting diode 82 includes one
It is electrically connected the cathode terminal of the anode tap of the resistor 81 and the drain end of an electrical connection N-type metal-oxide-semiconductor (MOS) 83.The control
Circuit 9 generates K control signal and is exported respectively to the gate of the N-type metal-oxide-semiconductor (MOS) 83 of the K light emitting diode 8
End operates in conducting and between being not turned on to control the DengNXing metal-oxide-semiconductor (MOS) 83 respectively.
It is explained by taking K=9 as an example, the control system of the light emitting diode includes nine light emitting diodes 9 altogether, and should
Control circuit 9 generates nine control signal S1 ~ S9.The control circuit 9 is by the logic for changing this nine control signal S1 ~ S9
Value, with control respectively the nine GeNXing metal-oxide-semiconductor (MOS) 83 operate in conducting or be not turned on so that whether nine conducting electric currents are distinguished
It flows through nine light emitting diodes 82 and shines or do not shine respectively respectively, to show this nine storages dress of the server respectively
The operating state set.Therefore, control letter when K is bigger, between the control circuit 9 and the equal light emitting diodes 8
Number quantity will also increase therewith so that the control circuit must have more input and output pin (Input/Output
Pin) to generate corresponding control signal.
Summary of the invention
Therefore, the purpose of the present invention is providing a kind of light emitting diode of quantity for effectively reducing output and input pins
Control circuit and control system.
Then, the control system of light emitting diode of the present invention includes N number of light emitting diode and a control circuit.
Defining N number of light emitting diode is respectively [i, j] a light emitting diode, [i, j] be sequentially [1,
1],[2,1]…[p,1],[1,2],[2,2]…[p,2] …[1,q],[2,q]…[m,n].Wherein, p, q, i, j, m, n are
Positive integer, 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 luminous two
Pole pipe unit operates between a starting state and a closed state, when the light emitting diode operates in the closed state
When, which does not shine.
The control circuit is electrically connected N number of light emitting diode, and generates p X-axis control signal and q Y-axis control
Signal.Defining the p X-axis control signal is respectively i-th of X-axis control signal, and defining the q Y-axis control signal is respectively jth
A Y-axis controls signal.I-th of X-axis control signal and j-th of Y-axis control signal are respectively corresponded output by the control circuit
To [i, j] a light emitting diode, the starting state is operated in respectively and should to control N number of light emitting diode
Between closed state.The control circuit controls [i, 1], [i, 2] ... also according to j=1, the circular order of 2 ... q respectively
[i, q] a light emitting diode sequentially operates in the starting state, and the same light emitting diode in turn and cyclically
Operating the time interval between adjacent secondary starting state is a predetermined time.
In some state sample implementations, wherein the logical value of j-th of Y-axis control signal caused by the control circuit is
When one first logical value, corresponding [i, the j] a light emitting diode operation is controlled in the starting state, and control electricity
Road by generated i-th X-axis control signal logical value, control [i, j] a light emitting diode shine or
It does not shine.The logical value of j-th of Y-axis control signal caused by the control circuit is one different from first logical value the
When two logical values, corresponding [i, the j] a light emitting diode operation is in the closed state.The predetermined time is not more than
200 milliseconds.
In some state sample implementations, wherein [i, j] a light emitting diode includes a resistor, one luminous two
Pole pipe and a switch element.The resistor includes the first end and a second end of one power supply of electrical connection.The light emitting diode
The anode tap and a cathode terminal for the second end for being electrically connected the resistor comprising one.
The switch element includes the first end of a cathode terminal for being electrically connected the light emitting diode, an electrical connection control electricity
Road and receive the second end of corresponding j-th Y-axis control signal and one be electrically connected the control circuit and receive it is corresponding this
The control terminal of i X-axis control signal.When the logical value of j-th of Y-axis control signal is second logical value, or work as the jth
The logical value of a Y-axis control signal is that the logical value of first logical value and i-th of X-axis control signal is a third logical value
When, which is not turned on, so that the corresponding light emitting diode does not shine.When j-th of Y-axis control signal
Logical value is that the logical value of first logical value and i-th X-axis control signal is four different from the third logical value
When logical value, the corresponding switching elements conductive, so that the corresponding lumination of light emitting diode.
Or in other state sample implementations, wherein [i, j] a light emitting diode includes a light-emitting diodes
Pipe.The light emitting diode includes an anode tap for being electrically connected the control circuit and corresponding i-th of X-axis control signal of reception,
And one be electrically connected the control circuit and receive the cathode terminal of corresponding j-th Y-axis control signal.
When the logical value of j-th of Y-axis control signal is second logical value, or when j-th of Y-axis control signal
Logical value is the logical value of first logical value and i-th X-axis control signal when being a third logical value, this is corresponding to shine
Diode does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is four logical value different from the third logical value, the corresponding lumination of light emitting diode.
Or in other state sample implementation, wherein [i, j] a light emitting diode includes a resistor, one
First switching element, a light emitting diode and a second switch element.The resistor includes the first of one power supply of electrical connection
End and a second end.The light emitting diode includes an anode tap and a cathode terminal.
The first switching element include one be electrically connected the resistor the second end first end, one electrical connection this shine two
The second end of the anode tap of pole pipe and the electrical connection control circuit and the control for receiving corresponding j-th of Y-axis control signal
End processed.The second switch element includes the first end of a cathode terminal for being electrically connected the light emitting diode, one ground connection of an electrical connection
The second end of point and the electrical connection control circuit and the control terminal for receiving corresponding i-th of X-axis control signal.
When the logical value of j-th of Y-axis control signal is second logical value, which is not led
It is logical, so that the corresponding light emitting diode does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is a third logical value, the corresponding first switching element conducting, which is not turned on, so that should
Corresponding light emitting diode does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is four logical value different from the third logical value, the corresponding first switching element and the corresponding second switch
Element is all connected, so that the corresponding lumination of light emitting diode.
Compared to the prior art, the present invention believes the p X-axis control signal and the q Y-axis control by the control circuit
It number is exported with the mode of connection for being similar to matrix to N number of light emitting diode, and according to j=1, the circular order of 2 ... q, control
It makes N number of light emitting diode and sequentially operates in the starting state in turn and cyclically, and reach the reduction p X-axis control
The total quantity of signal and the q Y-axis control signal.
[Detailed description of the invention]
Other features of the invention and effect will be clearly presented in the embodiment referring to schema, in which:
Fig. 1 is a circuit diagram, illustrates a kind of control system of known light emitting diode；
Fig. 2 is a block diagram, illustrates a first embodiment of the control system of light emitting diode of the present invention；
Fig. 3 is a circuit diagram, illustrates the light emitting diode in the first embodiment of the invention；
Fig. 4 is a circuit diagram, illustrates the light emitting diode in a second embodiment of the invention；And
Fig. 5 is a circuit diagram, illustrates the light emitting diode in a 3rd embodiment of the invention.
[specific embodiment]
Before the present invention is described in detail, it shall be noted that in the following description content, similar element is with identical
Number indicate.
Referring to Fig.2, the first embodiment of the control system of light emitting diode of the present invention is suitable for a computer system, such as
It is the server comprising N number of storage device.The control system of the light emitting diode includes N number of light emitting diode (LED) single
Member and a control circuit 1.Wherein, for N for positive integer and greater than 1, which is electrically connected N number of light emitting diode,
And control N number of light emitting diode respectively and shine or do not shine, to be respectively intended to show N number of storage dress of the server
The operating state set.For example, when the one of them of N number of light emitting diode shines, indicate that corresponding this shines two
The storage device running of pole pipe is normal, conversely, when wherein person of N number of light emitting diode does not shine, expression pair
Should light emitting diode the storage device operate it is abnormal but not subject to the limits.
Defining N number of light emitting diode is respectively [i, j] a light emitting diode, [i, j] be sequentially [1,
1],[2,1]…[p,1],[1,2],[2,2]…[p,2] …[1,q],[2,q]…[m,n].Wherein, p, q, i, j, m, n are
Positive integer, and p > 1, q > 1, i=1,2 ... p, j=1,2 ... q, 1≤m≤p, 1≤n≤q, N=p* (n-1)+m.Below for convenience
For the sake of explanation, in the present embodiment, with N=9, p=3, q=3, and m=3, n=3, and for meeting+m=3*2+3=9 N=p* (n-1)
It explains.Respectively [1,1] are a, [2,1] are a, [3,1] are a, [1,2] are a for N number of light emitting diode 21 ~ 29,
[2,2] a, the [3,2] are a, [1,3] is a, [2,3] are a, [3,3] a light emitting diode, respectively as in Fig. 2
21~29.In other embodiments, if N=9, p and q can also be respectively 4 and 3, and m=1, n=3, to meet N=p* (n-1)
+ m=4*2+1=9, at this point, N number of light emitting diode is respectively, [1,1] is a, [2,1] are a, [3,1] are a, [4,
1] a, [1,2] are a, [2,2] are a, [3,2] are a, [4,2] are a, [1,3] a light emitting diode.
Refering to Fig. 3, each light emitting diode 21 ~ 29 is operated between a starting state and a closed state, when this
When light emitting diode 21 ~ 29 operates in the closed state, which does not shine.Each luminous two
Pole pipe unit 21 ~ 29 includes a resistor 31, a light emitting diode 32 and a switch element 33.The resistor 31 includes an electricity
Connect the first end and a second end of a power supply VCC.The light emitting diode 32 include one be electrically connected the resistor 31 this second
The anode tap at end and a cathode terminal.The switch element 33 includes the first of a cathode terminal for being electrically connected the light emitting diode 32
End, one be electrically connected the control circuit 1 second end and one be electrically connected the control circuit 1 control terminal.In the present embodiment, should
Switch element 33 is a N-type metal-oxide-semiconductor (MOS) (NMOS), and in other embodiments, which is also possible to a p-type
Metal-oxide-semiconductor (MOS) (PMOS) or other types can controlled switch elements.
Refering to Fig. 2 and Fig. 3, which generates p X-axis control signal Xi and q Y-axis controls signal Yj.Definition should
P X-axis control signal Xi is respectively i-th of X-axis control signal, and defining the q Y-axis control signal Yj is respectively j-th of Y-axis control
Signal processed.In the present embodiment, because of p=3, q=3, i=1,2,3 and j=1,2,3, which generates 3 X-axis controls
Signal X1 ~ X3 processed and 3 Y-axis control signal Y1 ~ Y3.3 X-axis control signal X1, X2, X3 are respectively the 1st, the 2nd, the
3 X-axis control signal.3 Y-axis controls signal Y1, Y2, the Y3 are respectively the 1st, the 2nd, the 3rd Y-axis control signal.It should
Control circuit 1 for example can be a complexity can program logic device (Complex Programmable Logic Device；
CPLD), which includes a plurality of universal input output (General Purpose Input/Output；GPIO) pin, the p
The each of a X-axis control signal Xi and the q Y-axis control signal Yj require to export via different GPIO pin, change
Sentence is talked about, and the summation of the p and q are exactly that GPIO pin needs quantity for transmission of control signals.
The control circuit 1 by i-th X-axis control signal and j-th of Y-axis control signal respectively correspond output to this
[i, j] a light emitting diode, with control N number of light emitting diode 21 ~ 29 operate in respectively the starting state and should
Between closed state.For example, in the present embodiment, because of j=1,2,3 and i=1,2,3, the control circuit 1 by this
1 X-axis control signal is correspondingly outputting to that [1,1] are a, [1,2] are a, [1,3] a light emitting diode 21,24,27
The control terminal of the switch element 33.1st Y-axis control signal Y1 is also correspondingly outputting to [1,1] by the control circuit 1
A, [2,1] a, [3,1] a light emitting diode 21,22,23 switch element 33 the second end.
The logical value of j-th of Y-axis control signal is one second logical value caused by the control circuit 1, such as logic 1
When, corresponding [i, the j] a light emitting diode operation is in the closed state.For example, when the 1st Y-axis controls
The logical value of signal be logic 1 when, then [1,1] is a, [2,1] are a, a light emitting diode 21 in [3,1],
22, the voltage of the second end of 23 switch element 33 is logic 1, at this point, the corresponding switch element 33 is not turned on, so that
The corresponding light emitting diode 32 does not shine.
The logical value of j-th of Y-axis control signal caused by the control circuit 1 is one different from second logical value
First logical value when such as logical zero, controls corresponding [i, the j] a light emitting diode operation in the starting state.And it should
Control circuit 1 controls [i, j] a light emitting diode by the logical value of generated i-th of X-axis control signal
Wherein operate starting state person the light emitting diode 32 shine or do not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
Value is a third logical value, and when such as logical zero, which is not turned on, so that the corresponding light emitting diode 32
It does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
Value is fourth logical value different from the third logical value, and when such as logic 1, which is connected, so that should
Corresponding light emitting diode 32 shines.
For example, when the logical value of the 1st Y-axis control signal is logical zero, and the 1st, the 2nd, the 3rd X-axis
The logical value of control signal is when being respectively logical zero, 1,0, then [1,1] is a, a light emitting diode 21 in [3,1],
The control terminal of 23 switch element 33 and the voltage of the second end are respectively logical zero and logical zero, and [2,1] a hair
The control terminal of the switch element 33 of optical diode unit 22 and the voltage of the second end are respectively logic 1 and logical zero, this
When, [1,1] is a, the switch element 33 corresponding to a light emitting diode 21,23 in [3,1] is not turned on, so that
[1,1] are a, light emitting diode corresponding to a light emitting diode 21,23 in [3,1] does not shine.And this [2,
1] switch element 33 corresponding to a light emitting diode 22 is connected, so that a light emitting diode 22 in [2,1]
Corresponding light emitting diode 32 shines.
The control circuit 1 also according to j=1, the circular order of 2 ... q, control respectively [i, 1], [i, 2] ... [i,
Q] a light emitting diode sequentially operates in the starting state in turn and cyclically, and the same light emitting diode 21 ~
Time interval of 29 operations between adjacent secondary starting state is a predetermined time.
As an example it is assumed that the light emitting diode 32 of [1,1] a light emitting diode wants continuous illumination 0.36
Second, and other eight light emitting diodes 22 ~ 29 do not shine in this 0.36 second.The control circuit 1 can be 0 ~ 0.06
When the second, the logical value for persistently exporting the 1st, the 2nd, the 3rd X-axis control signal is logic 1,0,0, and continues to export
The logical value of 1st, the 2nd, the 3rd Y-axis control signal is logical zero, 1,1.The control circuit 1 also 0.06 ~
At 0.12 second, the logical value for persistently exporting the 1st, the 2nd, the 3rd X-axis control signal is logical zero, 0,0, and is continued
The logical value for exporting the 1st, the 2nd, the 3rd Y-axis control signal is logic 1,0,1.The control circuit 1 is also 0.12
At ~ 0.18 second, the logical value for persistently exporting the 1st, the 2nd, the 3rd X-axis control signal is logical zero, 0,0, and is held
The continuous logical value for exporting the 1st, the 2nd, the 3rd Y-axis control signal is logic 1,1,0.The control circuit 1 also exists
At 0.18 ~ 0.24 second, export at 0 ~ 0.06 second when as X-axis control signal X1 ~ X3 and Y-axis control signal Y1 ~ Y3.The control
Circuit 1 processed also at 0.24 ~ 0.3 second, when exporting at 0.06 ~ 0.12 second as X-axis control signal X1 ~ X3 and Y-axis control
Signal Y1 ~ Y3.The control circuit 1 also at 0.3 ~ 0.36 second, when exporting at 0.12 ~ 0.18 second as X-axis control signal
X1 ~ X3 and Y-axis control signal Y1 ~ Y3.In this example, which is 180 milliseconds, and because the persistence of vision of human eye
Phenomenon, can make observed by human eye the result is that: a light emitting diode continuous illumination in [1,1] 0.36 second.
In the present embodiment, which is not more than 200 milliseconds, and e.g. 180 milliseconds, and in other embodiments,
The predetermined time is also possible to other numerical value, as long as the phenomenon that size of the predetermined time can allow human eye to generate the persistence of vision is i.e.
It can.
It especially remarks additionally: p X-axis control signal Xi and the q Y-axis control caused by the control circuit 1
The quantity of signal, the connection mode between N number of light emitting diode are related.In the present embodiment, N number of light-emitting diodes
Pipe unit 21 ~ 29 is with the arrangement mode of square matrix and the p X-axis control signal Xi and the q Y-axis control signal link, such as N
=9, p=3, q=3 need nine control signals altogether with the practice of prior art to control nine light emitting diodes, but at this
In embodiment, it is only necessary to which six control signals just can control nine light emitting diodes 21 ~ 29, and reach reduction control signal
In other words the purpose of quantity, that is, reaches the quantity for reducing the output input pin of the control circuit 1.And in other realities
Apply in example, if N=9, p=4, q=3, m=1, n=3, although then N number of light emitting diode be not arranged in a manner of square matrix, and
Only a kind of mode similar to matrix arranges, and seven control signals is also only needed just to can control nine light emitting diodes,
Equally have the advantages that reduce control number of signals.In addition, it is once more emphasized that: aforementioned meaning N number of light emitting diode
Arranged in a manner of square matrix or similar to matrix, do not imply that N number of light emitting diode in the physical location of the server,
And refer to p X-axis control signal Xi and the q Y-axis control signal of N number of light emitting diode and the control circuit 1
Between line relationship.
Refering to Fig. 2 and Fig. 4, the second embodiment of the control system of light emitting diode of the present invention, be generally with this first
Embodiment is similar, and different places is: each light emitting diode 21 ~ 29 includes a light emitting diode 32, [i, the j]
The light emitting diode 32 of a light emitting diode includes the electrical connection control circuit 1 and receives corresponding i-th of X-axis
Control the anode tap of signal and the cathode terminal of the electrical connection control circuit 1 and corresponding j-th of Y-axis control signal of reception.
When the logical value of j-th of Y-axis control signal is second logical value, or when j-th of Y-axis control signal
Logical value is the logical value of first logical value and i-th X-axis control signal when being the third logical value, this is corresponding to shine
Diode 32 does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is four logical value, which shines.
Refering to Fig. 2 and Fig. 5, the 3rd embodiment of the control system of light emitting diode of the present invention, be generally with this first
Embodiment is similar, and different places is: [i, j] a light emitting diode includes a resistor 31, a first switch
Element 35, a light emitting diode 32 and a second switch element 34.
The resistor 31 includes the first end and a second end of an one power supply VCC of electrical connection.The first switching element 35 packet
Containing one be electrically connected the resistor 31 the first end of the second end, a second end and one be electrically connected the control circuit 1 and receive pair
The control terminal for j-th of the Y-axis control signal answered.The light emitting diode 32 includes being somebody's turn to do for an electrical connection first switching element 35
The anode tap of second end and a cathode terminal.The second switch element 34 includes the cathode for being electrically connected the light emitting diode 32
The first end at end, one electrical connection one grounding point GND second end and one be electrically connected the control circuit 1 and receive it is corresponding this i-th
The control terminal of a X-axis control signal.In the present embodiment, which is a N-type metal-oxide-semiconductor (MOS) (NMOS), should
Second switch element 35 is a p-type metal-oxide-semiconductor (MOS) (PMOS), but not subject to the limits.
When the logical value of j-th of Y-axis control signal is second logical value, the corresponding first switching element 35 is not
Conducting, so that the corresponding light emitting diode 32 does not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is the third logical value, which is connected, which is not turned on, makes
The corresponding light emitting diode 32 is obtained not shine.
When the logical value of j-th of Y-axis control signal is the logic that first logical value and i-th of X-axis control signal
When value is four logical value, the corresponding first switching element 35 and the corresponding second switch element 34 are all connected, so that
The corresponding light emitting diode 32 shines.
In conclusion the control circuit 1 is by the p X-axis control signal Xi and the q Y-axis control signal Yj to be similar to
The mode of connection of matrix is correspondingly outputting to N number of light emitting diode, and according to j=1, the circular order of 2 ... q, controls the N
A light emitting diode sequentially operates in the starting state in turn and cyclically, and the operation of the same light emitting diode exists
Time interval between adjacent secondary starting state is the predetermined time, and can reach the reduction p X-axis control signal and be somebody's turn to do
The total quantity of q Y-axis control signal, therefore the purpose of the present invention can be reached really.
A specific embodiment of the invention and embodiment are elaborated above in conjunction with attached drawing, but the present invention is not
It is limited to the above-described embodiment and examples, within the knowledge of those skilled in the art, this can also be not being departed from
It is made a variety of changes under the premise of inventive concept.
Claims (6)
1. a kind of control system of light emitting diode, characterized by comprising:
N number of light emitting diode, defining N number of light emitting diode is respectively [i, j] a light emitting diode,
[i, j] is sequentially [1,1], [2,1] ... [p, 1], [1,2], [2,2] ... [p, 2] ... [1, q], [2, q] ... [m, n], wherein p,
Q, i, j, m, n are 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 operate between a starting state and a closed state, when the light emitting diode is grasped
When making in the closed state, which does not shine；And
One control circuit is electrically connected N number of light emitting diode, and generates p X-axis control signal and q Y-axis control letter
Number, defining the p X-axis control signal is respectively i-th of X-axis control signal, and defining the q Y-axis control signal is respectively j-th
Y-axis controls signal, which respectively corresponds output extremely for i-th of X-axis control signal and j-th of Y-axis control signal
[i, j] a light emitting diode operates in the starting state and the pass to control N number of light emitting diode respectively
Between closed state, which controls [i, 1], [i, 2] ... also according to the circular order of j=1,2 ... q respectively
[i, q] a light emitting diode sequentially operates in the starting state, and the same light emitting diode in turn and cyclically
Operating the time interval between adjacent secondary starting state is a predetermined time,
When the logical value of j-th of Y-axis control signal caused by the control circuit is first logical value, it is corresponding to control this
[i, j] a light emitting diode operation is in the starting state, and the control circuit is by generated i-th of X-axis control
The logical value of signal processed controls [i, j] a light emitting diode and shines or do not shine, caused by the control circuit
When the logical value of j-th of Y-axis control signal is second logical value different from first logical value, corresponding [i, the j]
In the closed state, which is not more than 200 milliseconds for a light emitting diode operation,
[i, j] a light emitting diode includes:
One resistor, first end and a second end comprising one power supply of electrical connection；
One light emitting diode, the anode tap and a cathode terminal of the second end for being electrically connected the resistor comprising one；And
One switch element, the first end for the cathode terminal for being electrically connected the light emitting diode comprising one, one are electrically connected the control circuit
And receive the second end of corresponding j-th Y-axis control signal and one be electrically connected the control circuit and receive it is corresponding this i-th
The control terminal of a X-axis control signal when the logical value of j-th of Y-axis control signal is second logical value, or works as the jth
The logical value of a Y-axis control signal is that the logical value of first logical value and i-th of X-axis control signal is a third logical value
When, which is not turned on so that the light emitting diode does not shine, when the logical value of j-th of Y-axis control signal be this
One logical value and when the logical value of i-th X-axis control signal is four logical value different from the third logical value, this is opened
Element conductive is closed, so that the lumination of light emitting diode.
2. the control system of light emitting diode according to claim 1, which is characterized in that [i, j] a light-emitting diodes
Pipe unit includes a light emitting diode, which includes the electrical connection control circuit and receive corresponding i-th of X
Axis controls the anode tap of signal and one is electrically connected the control circuit and receives the cathode that corresponding j-th of Y-axis controls signal
End,
When the logical value of j-th of Y-axis control signal is second logical value, or when the logic of j-th of Y-axis control signal
Value is the logical value of first logical value and i-th X-axis control signal when being a third logical value, which does not send out
Light,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one four logical value different from the third logical value, the lumination of light emitting diode.
3. the control system of light emitting diode according to claim 1, which is characterized in that [i, j] a light-emitting diodes
Pipe unit includes:
One resistor, first end and a second end comprising one power supply of electrical connection；
One first switching element, first end, a second end and the electrical connection of the second end for being electrically connected the resistor comprising one
The control circuit and the control terminal for receiving corresponding j-th of Y-axis control signal；
One light emitting diode, the anode tap and a cathode terminal of the second end for being electrically connected the first switching element comprising one；And
One second switch element, the first end for the cathode terminal for being electrically connected the light emitting diode comprising one, one ground connection of an electrical connection
The second end of point and the electrical connection control circuit and the control terminal for receiving corresponding i-th of X-axis control signal,
When the logical value of j-th of Y-axis control signal is second logical value, which is not turned on, so that should
Light emitting diode does not shine,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one third logical value, first switching element conducting, which is not turned on, so that the light emitting diode is not sent out
Light,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one four logical value different from the third logical value, the first switching element and the second switch element are all connected, so that
The lumination of light emitting diode.
4. a kind of control circuit of light emitting diode, which is characterized in that be suitable for being electrically connected N number of light emitting diode, definition
N number of light emitting diode is respectively [i, j] a light emitting diode, [i, j] be sequentially [1,1], [2,1] ... [p,
1], [1,2], [2,2] ... [p, 2] ... [1, q], [2, q] ... [m, n], wherein p, q, i, j, m, n are 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 operation
Between a starting state and a closed state, when the light emitting diode operates in the closed state, the light-emitting diodes
Pipe unit does not shine,
The control circuit is electrically connected N number of light emitting diode, and generates p X-axis control signal and q Y-axis control signal,
Defining the p X-axis control signal is respectively i-th of X-axis control signal, and defining the q Y-axis control signal is respectively j-th of Y-axis
Control signal, the control circuit by i-th X-axis control signal and j-th of Y-axis control signal respectively correspond output to this
[i, j] a light emitting diode operates in the starting state and the closing shape to control N number of light emitting diode respectively
Between state, which controls [i, 1], [i, 2] ... [i, q] also according to the circular order of j=1,2 ... q respectively
A light emitting diode sequentially operates in the starting state in turn and cyclically, and the operation of the same light emitting diode exists
Time interval between adjacent secondary starting state is a predetermined time,
When the logical value of j-th of Y-axis control signal caused by the control circuit is first logical value, it is corresponding to control this
[i, j] a light emitting diode operation is in the starting state, and the control circuit is by generated i-th of X-axis control
The logical value of signal processed controls [i, j] a light emitting diode and shines or do not shine, caused by the control circuit
When the logical value of j-th of Y-axis control signal is second logical value different from first logical value, corresponding [i, the j]
In the closed state, which is not more than 200 milliseconds for a light emitting diode operation,
Each light emitting diode includes a resistor, a light emitting diode and a switch element, which includes an electricity
The first end and a second end of a power supply are connected, which includes the sun of a second end for being electrically connected the resistor
Extremely and a cathode terminal, the switch element include the first end of a cathode terminal for being electrically connected the light emitting diode, an electrical connection
The second end of the control circuit and one be electrically connected the control circuit control terminal, wherein
The control circuit by j-th Y-axis control signal export to corresponding [i, j] a light emitting diode this
Two ends, and i-th of X-axis control signal is exported to the control terminal of corresponding [i, j] a light emitting diode, when
When the logical value of j-th of Y-axis control signal is second logical value, or when the logical value of j-th of Y-axis control signal is to be somebody's turn to do
First logical value and when the logical value of i-th X-axis control signal is a third logical value, which does not lead
It is logical so that the corresponding light emitting diode does not shine, when the logical value of j-th of Y-axis control signal be first logical value and
When the logical value of i-th of X-axis control signal is four logical value different from the third logical value, the corresponding switch member
Part conducting, so that the corresponding lumination of light emitting diode.
5. the control circuit of light emitting diode according to claim 4, which is characterized in that each light emitting diode packet
A light emitting diode is included, which includes that an anode tap for being electrically connected the control circuit and one are electrically connected control electricity
The cathode terminal on road, wherein
The control circuit exports i-th of X-axis control signal to the sun of corresponding [i, j] a light emitting diode
Extremely, and by j-th of Y-axis control signal it exports to the cathode terminal of corresponding [i, j] a light emitting diode,
When the logical value of j-th of Y-axis control signal is second logical value, or when the logic of j-th of Y-axis control signal
Value is the logical value of first logical value and i-th X-axis control signal when being a third logical value, the corresponding light-emitting diodes
Pipe does not shine,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one four logical value different from the third logical value, the corresponding lumination of light emitting diode.
6. the control circuit of light emitting diode according to claim 5, which is characterized in that each light emitting diode packet
A resistor, a first switching element, a light emitting diode and a second switch element are included, which includes an electrical connection
The first end of one power supply and a second end, the first switching element include the first of a second end for being electrically connected the resistor
End, a second end and one are electrically connected the control terminal of the control circuit, which includes an electrical connection first switch member
The anode tap of the second end of part and a cathode terminal, the second switch element include the yin for being electrically connected the light emitting diode
Extreme first end, the second end of one grounding point of electrical connection and one are electrically connected the control terminal of the control circuit, wherein
When the logical value of j-th of Y-axis control signal is second logical value, which is not turned on,
So that the corresponding light emitting diode does not shine,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one third logical value, the corresponding first switching element conducting, which is not turned on, so that the correspondence
Light emitting diode do not shine,
When the logical value of j-th of Y-axis control signal is that the logical value that first logical value and i-th of X-axis control signal is
When one four logical value different from the third logical value, the corresponding first switching element and the corresponding second switch element
It is all connected, so that the corresponding lumination of light emitting diode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705364.4A CN106612580B (en) | 2015-10-26 | 2015-10-26 | The control circuit and control system of light emitting diode |
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| CN201510705364.4A CN106612580B (en) | 2015-10-26 | 2015-10-26 | The control circuit and control system of light emitting diode |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826347A (en) * | 2012-11-16 | 2014-05-28 | 英业达科技有限公司 | Control apparatus and light source apparatus |
| CN104680970A (en) * | 2013-12-02 | 2015-06-03 | 立锜科技股份有限公司 | Light emitting device array billboard and control method thereof |
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2015
- 2015-10-26 CN CN201510705364.4A patent/CN106612580B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826347A (en) * | 2012-11-16 | 2014-05-28 | 英业达科技有限公司 | Control apparatus and light source apparatus |
| CN104680970A (en) * | 2013-12-02 | 2015-06-03 | 立锜科技股份有限公司 | Light emitting device array billboard and control method thereof |
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| Publication number | Publication date |
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| CN106612580A (en) | 2017-05-03 |
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