TWI584692B - Control system for a light-emitting device and control method thereof - Google Patents

Description

Control system and control method of light-emitting element

The present invention relates to a control system, and more particularly to a control system and control method for a light-emitting element.

With the advancement of technology, there are more and more types of electronic components, among which light-emitting components are a common electronic component. In general, the light-emitting element emits light according to an external voltage. However, if the voltage is simply supplied to the light-emitting element, only the light-emitting element can be made to emit light, and one power supply line can control only one type of light-emitting element, and the light-emitting element cannot be diversified while simplifying wiring.

An embodiment of the invention provides a control system for a light-emitting element, comprising a mixer, a separator, a controller, and at least one light-emitting element. The mixer mixes a power component and a signal component to generate a mixed signal. The splitter separates the power supply component and the signal component from the mixed signal. The controller operates according to the power component and generates at least one control signal based on the signal component. The light emitting element emits light in accordance with a control signal.

An embodiment of the invention provides an electronic device with a control system for a light-emitting element.

An embodiment of the present invention provides a method for controlling a light emitting device, comprising: mixing a power component and a signal component at a transmitting end to generate a mixed signal; transmitting a mixed signal to a receiving end by using a power line; and mixing from the receiving end The power component and the signal component are separated from the signal; and at least one control signal is generated according to the separated signal component to control the illumination of the at least one light emitting component.

In order to make the features and advantages of the present invention more comprehensible, the preferred embodiments are described below, and are described in detail with reference to the accompanying drawings.

100‧‧‧Control system

110, 511‧‧‧ Mixer

120, 521‧‧‧ separator

130, 522‧‧ ‧ controller

140, 150, 523, 524‧‧ ‧Lighting elements

S _P ‧‧‧Power components

S _S ‧‧‧ signal component

S _M ‧‧‧ mixed signal

S _C1 , S _C2 ‧‧‧ control signals

300‧‧‧mixer;

310, 420‧‧‧ comparator

400‧‧‧Separator

410‧‧‧Linear regulator

500‧‧‧Host system

510, 530‧‧‧ display card

520‧‧‧ Bridge

Fig. 1 is a schematic view showing a control system of a light-emitting element according to an embodiment of the present invention.

2 is a schematic diagram of a power supply component, a signal component, and a mixed signal in an embodiment of the present invention.

Figure 3 is a schematic diagram of a mixer in an embodiment of the invention.

Figure 4 is a schematic diagram of a separator in an embodiment of the invention.

Fig. 5 is a schematic view showing an application of a control system for a light-emitting element according to an embodiment of the present invention.

FIG. 6 is a schematic flow chart showing a possible control method of a light-emitting element according to an embodiment of the present invention.

Fig. 1 is a schematic view showing a control system of a light-emitting element of the present invention. The control system 100 includes a mixer 110, a separator 120, a controller 130, and light emitting elements 140 and 150. The mixer 110 mixes a power component S _P and a signal component S _S for generating a mixed signal S _M . The present invention does not limit the circuit architecture of the mixer 110. As long as the circuit architecture that can mix the power supply and the signal can be used as the mixer 110. A possible embodiment of the mixer 110 will be described later by means of FIG.

The separator 120 is coupled to the mixer 110 and separates the power component S _P and the signal component S _S from the mixed signal S _M . The present invention does not limit the circuit architecture of the splitter 120. As long as the circuit configuration of the power supply component S _P and the signal component S _S can be separated from the mixed signal S _M , it can be used as the separator 120 . A possible embodiment of the splitter 120 will be described later by means of FIG.

The controller 130 is coupled between the splitter 120 and the light emitting elements 140, 150. The controller 130 operates in accordance with the power component S _P and generates at least one control signal based on the signal component S _S . The number of control signals is related to the number of light-emitting elements. In the present embodiment, the number of control signals is equal to the number of light-emitting elements. In this example, a control signal controls a light emitting element. For example, the control signal S _C1 controls the light-emitting element 140; the control signal S _C2 controls the light-emitting element 150. In other embodiments, a control signal can simultaneously control a plurality of light emitting elements, wherein the number of control signals is less than the number of light emitting elements.

In the present embodiment, as the operation power supply voltage S _P component 130 of the controller. When the controller 130 receives the power component S _P, to work properly. Therefore, after receiving the operating voltage (i.e., S _P ), the controller 130 generates the control signals S _C1 and S _C2 based on the signal component S _S , but is not intended to limit the present invention. In other embodiments, controller 130 may also generate a single control signal or more than three control signals.

In a possible embodiment, the signal component S _S is composed of a plurality of packets. The controller 130 generates different control signals based on the data of different packets in the signal component S _S . In the present embodiment, the controller 130 controls the color of the light emitted by the light-emitting elements 140 and 150 and the light-emitting time through the control signals S- _C1 and S _C2 . The color of the light emitted by the light-emitting element 140 may be the same or different from the color of the light emitted by the light-emitting element 150. In addition, when the light emitting element 140 emits light, the light emitting element 150 may or may not emit light. In other embodiments, the blinking state of the light emitting element 140 is the same or different from the blinking state of the light emitting element 150. For example, with the present invention, the light-emitting elements 140 and 150 can flicker with the sound size of the music.

The invention does not limit the number of light-emitting elements. In a possible embodiment, control system 100 can have a single illuminating element or more than three illuminating elements. The invention is also not limited to the type of light-emitting element. In a possible embodiment, the light-emitting elements 140 and 150 are both light-emitting diodes (LEDs). In other embodiments, light emitting elements 140 and 150 are organic light emitting diodes (OLEDs). In other words, the light-emitting elements 140 and 150 can exhibit more than one color, such as red, green, and blue. Light-emitting elements 140 and 150 can assume different colors depending on different control signals.

2 is a schematic diagram of a power supply component S _P , a signal component S _{S ,} and a mixed signal S _M according to an embodiment of the present invention. As shown, the power component S _P is a DC power source, such as 5V, but is not intended to limit the invention. The present invention is not limited to the power component S _P type and voltage level. The signal component S _S is a digital signal. As shown, the bit of the signal component S _S varies between the high level H and the low level L. Mixed signal S _M-based DC offset (DC offset) a signal having a.

Figure 3 is a schematic diagram of a mixer in an embodiment of the invention. As shown, the mixer 300 includes a comparator 310. The comparator 310 receives the power component S _P and the signal component S _S for generating the mixed signal S _S . In the present embodiment, the mixed signal S _M is a train signal having a DC offset.

The non-inverting input (+) of the comparator 310 receives the power supply component S _P and the inverting input terminal (-) receives the signal component S _S , but is not intended to limit the present invention. In other embodiments, the power component S _P may be input to the inverting input of the comparator, and the signal component S _S may be input to the non-inverting input of the comparator.

Figure 4 is a schematic diagram of a separator in an embodiment of the invention. As shown, the splitter 400 includes a linear regulator 410 and a comparator 420. The linear regulator 410 processes the mixed signal S _M for generating the power supply component S _P . The comparator 420 compares the mixed signal S _M with a reference signal S _R for generating a signal component S _S . In a possible embodiment, the reference signal S _R is a ground level.

In the present embodiment, the non-inverting input (+) of the comparator 420 receives the mixed signal S _M and the inverting input (-) thereof receives the reference signal S _R , but is not intended to limit the present invention. In other embodiments, the non-inverting input (+) of comparator 420 may receive reference signal S _R and the inverting input (-) receives mixed signal S _M .

Fig. 5 is a schematic view showing an application of a control system for a light-emitting element according to an embodiment of the present invention. The invention does not limit the field of application of the control system of the invention. The control system of the present invention can be used with any electronic device that requires a lighting effect. In one possible embodiment, control system 100 is employed in a host system 500. As shown, host system 500 has multiple display cards, such as 510 and 530, and a bridge 520 coupled between the display cards. In this embodiment, the host system 500 supports multiple display card technologies, such as SLI (Scalable Link Interface).

The display card 510 has a mixer 511 for mixing a power component and a signal component. Since the action principle of the mixer 511 is similar to that of the first figure The clutch 110 is not described again. In the present embodiment, since the mixer 511 mixes the power supply component and the signal component, the display card 510 can output the mixed result only by using a single pin.

The bridge 520 is configured to couple a plurality of display cards. In the present embodiment, the bridge 520 has a separator 521, a controller 522, and light-emitting elements 523 and 524. The invention does not limit the number of light-emitting elements. In other embodiments, bridge 520 has other numbers of light emitting elements. The aesthetic appearance of the bridge 520 can be increased by the illumination states of the light-emitting elements 523 and 524.

The separator 521 separates the power supply component and the signal component from the mixed signal output from the display card 510, and supplies the separated result to the controller 522. The power supply component serves as an operating power source for the controller 522. The controller 522 generates a corresponding control signal according to the signal component for controlling the illumination color and the off time of the illumination elements 523 and 524.

In other embodiments, display card 510 has a mixer 511, but bridge 520 does not have a splitter 521, but has only controller 522 and lighting elements 523, 524. In this example, controller 522 receives the mixed signal of mixer 511 directly. Since the mixed signal of the mixer 511 has a direct current component, the controller 522 can still be normally driven. In this example, controller 522 controls lighting elements 523 and 524 based on a predetermined program stored therein.

In another possible embodiment, the display card 510 may not have a mixer, but the bridge 520 has a splitter 521, a controller 522, and lighting elements 523 and 524. In this example, the display card 510 still outputs the power component to the bridge 520 through only a single pin for driving the controller 520. In this example, controller 522 controls lighting elements 523 and 524 based on a predetermined program stored therein.

In some embodiments, display card 510 does not have a mixer, and bridge 520 does not have a splitter 521. Although the bridge 520 has only the controller 522 and the light-emitting elements 523 and 524, since the display card 510 still transmits the power supply component to the bridge 520, the controller 522 can operate according to the power supply component. In this example, controller 522 controls lighting elements 523 and 524 based on a predetermined program stored therein.

With the control system of the foregoing embodiment, although the mixed signal of the power component and the signal component is transmitted on the cable, the mixed signal can also be transmitted to the light-emitting component in the conventional device (for example, SLI bridge card) because the power supply voltage is constant. In order to illuminate the light-emitting elements in the conventional device, that is, the control system of the embodiment of the present invention can be compatible with the conventional device.

In addition, based on the control system of the above embodiment, an embodiment of the present invention further provides a method for controlling a light-emitting element. The method includes: mixing a power component and a signal component at a transmitting end to generate a mixed signal; transmitting the mixed signal to a receiving end by using a power line; and separating the power component from the mixed signal at the receiving end The signal component generates at least one control signal according to the separated signal component to control the illumination of the at least one light emitting component. For the implementation of each step in the method, refer to the related content of the control system of the foregoing embodiments, and no recapitulation is made herein.

FIG. 6 is a schematic flow chart showing a possible control method of a light-emitting element according to an embodiment of the present invention. The control method of the present invention can be applied to a bridge, wherein the bridge is used to couple a plurality of display cards. First, a mixed signal is received (step S610). In a possible embodiment, the mixed signal is provided by a primary display card. In this example, the main display card mixes a power component and a signal component. Used to generate a mixed signal.

The power supply component and the signal component are separated from the mixed signal (step S620). In a possible embodiment, the bridge has a splitter for separating the power supply components and the signal components. Next, the light-emitting elements are controlled by the power source component and the signal component (step S630). In a possible embodiment, a power component is provided to a controller for driving the controller. After the controller receives the power component, the controller generates a control signal according to the signal component to control the light-emitting state of the light-emitting component. Since the signal component is composed of a plurality of packets, the controller can control the illumination states of the single or multiple light-emitting components, such as color and flicker, and the illumination time, according to the data in different packets.

In a possible embodiment, if the bridge has only a single light-emitting element, the controller can control the light-emitting elements according to the data of the package, so that the light-emitting elements exhibit different colors at different points in time. In addition, the controller can also control the light-off time of the light-emitting element according to the data of the package. When the bridge has a plurality of light emitting elements, the controller can control the light emitting elements according to the data of the package so that the light emitting elements exhibit different colors.

Through the above embodiments of the present invention, it is possible to control the light-emitting elements by transmitting a power supply plus signal through a power line, so that the function and color can be more varied, thereby simplifying the wiring.

Unless otherwise defined, all terms (including technical and scientific terms) are used in the ordinary meaning Moreover, unless expressly stated, the definition of a vocabulary in a general dictionary should be interpreted as consistent with the meaning of an article in its related art, and should not be interpreted as an ideal state or an overly formal voice.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧Control system

110‧‧‧mixer

120‧‧‧Separator

130‧‧‧ Controller

140, 150‧‧‧Lighting elements

S _P ‧‧‧Power components

S _S ‧‧‧ signal component

S _M ‧‧‧ mixed signal

S _C1 , S _C2 ‧‧‧ control signals

Claims (10)

A control system for a light-emitting element, comprising: a mixer for mixing a power component and a signal component to generate a mixed signal; a separator for separating the power component and the signal component from the mixed signal a controller for operating according to the power component separated by the splitter, and generating at least one control signal according to the signal component; and at least one light emitting component for emitting light according to the at least one control signal. A control system for a light-emitting element according to claim 1, wherein the mixer comprises: a comparator for receiving the power component and the signal component to generate the mixed signal. A control system for a light-emitting element according to claim 1, wherein the separator comprises: a linear regulator for processing the mixed signal to generate the power component; and a comparator for The mixed signal is compared to a reference signal to produce the signal component. The control system of the light-emitting element according to claim 3, wherein the reference signal is a ground level. The control system of the illuminating device of claim 1, wherein the controller controls the color of the light emitted by the at least one illuminating element and the illuminating time through the at least one control signal. Wherein, when the at least one light emitting element is two or more light emitting elements, the at least one control signal controls one of the two or more light emitting elements or a combination thereof to emit light, and/or controls the two Or two or more light-emitting elements emit the same or different light colors and light-emitting time. The control system of the light-emitting element according to claim 1, wherein the signal component has at least one packet, and the controller generates at least one control signal according to the data of the at least one packet. The control system of the light-emitting element according to claim 1, wherein the mixer is integrated in a display card, the splitter is integrated in a bridge, and the bridge is coupled to the display card. The control system for a light-emitting element according to claim 1, wherein the at least one light-emitting element is an organic light-emitting diode. An electronic device comprising a control system for a light-emitting element according to any one of claims 1 to 8. A method for controlling a light-emitting component includes: mixing a power component and a signal component at a transmitting end to generate a mixed signal; transmitting the mixed signal to a receiving end by using a power line; and receiving the mixed signal from the receiving end Separating the power component and the signal component; providing the power component separated from the mixed signal to a controller; and causing the controller to generate at least one control signal to control the at least one light emitting component according to the separated signal component Glowing.