TWI377541B - Switch apparatus, light source appratus using the same, and method for controlling light source apparatus - Google Patents

Description

1377541 NVT-2006-092 22321 twf.doc/n IX. Description of the Invention: [Technical Field] The present invention relates to a switching device, a use source device, and a control method of a light source device, and particularly a B-off device Light from the single-output terminal simultaneously controls the switch of the two switches: there is a light source device that can borrow the device, the control device of the wire source device, l use the switch [Prior Art] Currently in the control of the indicator light, the standing light II The polar body allows the user to judge the current state of the machine: the green light and the blue light emitting diode generated by the diode generate the first machine as normal: L, and the orange light emitting diode produces ^ ϋ : light diode production The red light indicates that the machine is in:: A light-emitting diode requires an output terminal for control or: The picture shows the control circuit of the conventional light-emitting diode. Referring to FIG. 1〇, the control circuit of the polar body includes a control module 103, resistors 105 and 107, and LEDs 11 and 112. Each of the light-emitting diodes corresponds to the second module of the control module 103. The output signal of each output terminal controls the light-emitting diodes and leads. Although the circuit of this control method is relatively simple, when the material is integrated on the wafer, in order to emphasize the multi-circuit design of the product, the output of each control module will be evaluated as the second time. The right LED must occupy an output terminal', which can be quite confusing for designers. 1377541 NVT-2006-092 22321twf, between doc/n ground GND. In addition, the lightning 吝 4 — , the voltage is generated earlier than 2 〇 6 according to the potential of the input signal 'turn it into a control voltage. Referring to FIG. 2, the light source device 2 further includes three resistors 22A, 222 and 226. Wherein the end of the 'resistor 220 is lightly connected to the collector terminal of the double-carrier transistor 207, and the other end receives the power supply voltage. The - terminal of resistor 222 is reduced to the supply voltage Vdd, while the other terminal receives the input signal. The resistor 226 is disposed between the base terminal of the NPN bipolar transistor 2〇7 and the light source 203. 3A and 3B illustrate a pulse width modulation signal in accordance with a preferred embodiment of the present invention. Referring to FIG. 3A, in the embodiment, the control unit 201 receives a signal that the input signal of the external circuit is a logic high level and a logic low level, and the signal is, for example, a pulse width modulation (pulse also

Modulation 'PWM' signal. In Fig. 3A, it is apparent that the pulse width modulation signal has the same pulse width period. When the pulse width modulation signal is in the period T1, it is in a logic high state, and the pulse width modulation signal charges the capacitor 230 via the resistor 224. Since the capacitor_resistance circuit has sufficient charging time during the period τ ’ 'the voltage at the base end of the NPN bipolar transistor 207 is also a logic high state. In addition to the voltage across the capacitor 230, in addition to turning on the LED 210, the NPN bipolar transistor 207 can be turned on, so that the collector terminal of the NPN bipolar transistor 207 and the node of the resistor 220 are formed. The logic is low so that the light-emitting diode 212 is in an off state. When the pulse width modulation signal is in the logic low state in the period T2, the capacitor 230 is discharged through the resistor 224, so that the NPN double carrier power 1377541 NVT-2006-092 22321 twf.doc/n crystal 207 Extremely logical low. Therefore, the electrical waste of the capacitor 23 无法 cannot turn on the light-emitting diode 210, and the binary double-carrier transistor 207 is also turned off. However, the power supply house, the resistor 22, the light-emitting diode m, and the ground GND form a loop through which the pole body 212 is turned on.

Please refer to FIG. 3B 'The actual _ can observe the period of the pulse width modulation signal: when the tuning signal is in the period T3 (the period T3 is less than the period τι), it is the logic high power (four) state 'the pulse width signal will be Capacitor 230 is charged via resistor 224. Since the charging time of the capacitor_resistor circuit is shortened, the voltage of the base terminal of the ΝΡΝ bipolar transistor 2〇7 is charged to a predetermined voltage.

This preset voltage is between the turn-on voltage of the light-emitting diode and the turn-on voltage of the ΝρΝ bipolar transistor 207. For example, the turn-on voltage of the ΝρΝ bipolar transistor 207 is approximately 〇7V, and the turn-on voltage of the LED is about 2.1V (red light emitting diode, green light emitting diode, and yellow light emitting diode) Polar body) ~ 3.4V (blue light emitting diode). Therefore, the LED 210 is turned off, and the NPN bipolar transistor 207 is turned on, so that the collector terminal of the NPN bipolar transistor 207 forms a logic low with the node of the resistor 22〇, so that the light is emitted. The polar body 212 is in an off state. In addition, the input signal of this embodiment may also be pulse amplitude modulation (Pulse)

Amplitude Modulation ' PAM) signal, the pulse amplitude modulation signal has a variable clock amplitude, but its clock cycle is the same. Figure 4 is a green light source showing another light source device in accordance with the present invention. Referring to Figures 2 and 4, the light source device 400 of the present embodiment includes a light source 403 and 405 1377541 NVT-2006-092 22321 twf.doc/n and a control unit 401. Wherein, the function of the control member can be compared to the control unit 2〇1, and the light source connection and the component function can be compared to the light source 2() 3 and lighter. In the embodiment, the light sources 403 and 4〇5 can be exemplified by == The relationship between the relationship and the component function can be compared with that of the present invention. The greatest difference between the present embodiment is that the control unit 401 includes a PNP bipolar transistor* voltage generating unit. Standing

The tapping relationship and component function of the medium voltage generating unit 406 can be compared to the lightning generating unit 206. In addition, the coupling relationship of the resistors* and the capacitors 43 and the component functions of the voltage generating unit 4〇6 can be compared to the resistors 2 2 4 and 230. The light source device 400 of the present embodiment further includes resistors 42A, 422, and 426, wherein the coupling relationship of the resistors 420, 422, and 426 and the component functions can be compared to the resistors 220, 222, and 226, respectively. 5A and 5B illustrate another pulse width modulation signal in accordance with the present invention. In conjunction with FIG. 4 and FIG. 5A, when the pulse width modulation signal is at period T4, the pulse width modulation signal charges the capacitance-resistance (RC) circuit. When the period Τ4 is completed, the voltage difference between the anode terminal and the cathode terminal of the light-emitting diode 410 is greater than the turn-on voltage, so that the light-emitting diode 410 is turned on. In addition, the ΡΝΡ bipolar transistor 407 is turned on such that its collector terminal forms a logic low potential with the node of the resistor 42 ’ such that the illuminating diode 412 is turned off. When the pulse width modulation signal is at period Τ5, the pulse width modulation signal is 〇ν, and at this time, the capacitor 430 is discharged through the resistor 424. Therefore, the light-emitting diode 41 is turned off, and the germanium double-carrier transistor 407 is also turned off. When 1377541 NVT-2〇〇6-〇92 22321twf.doc/n, the power supply voltage Vdd, the resistor 420, the light-emitting diode 412, and the ground GND form a loop, thereby turning on the light-emitting diode 412. Please refer to FIG. 5B. 'This embodiment can adjust the period of the pulse width modulation signal'. When the pulse width modulation signal is in the period τ6 (the period T6 is less than the period T4), since the charging time of the capacitor-resistance is shortened, The voltage at the base of the ρΝρ bipolar transistor 407 is charged to a predetermined voltage.

This preset voltage is between the on-voltage of the light-emitting diode and the turn-on voltage of the germanium double-carrier transistor 407. Therefore, the light-emitting diode 41 is blocked, and the double-carrier transistor 407 is turned on, so that the light-emitting diode 412 is turned off. Figure 6 depicts another light source device in accordance with the present invention. Referring to FIG. 2 and FIG. 6, the light source device 6〇〇 of the present embodiment includes light sources 6〇3 and 6〇5 and a control unit 6 (wherein the relationship between the control unit 6Q1 and the component can be controlled to control) The unit and the light source 6Q3 and 6() 5 can be compared to the light source 2〇3 and 2〇5.

In the present embodiment, the control unit 6〇1 may be, for example, an NpN bipolar electric sa body 6G7' whose handle relationship and component function can be compared to the NPN bipolar transistor 207. Further, the light sources 6〇3 and 6〇5 of the present embodiment can be listed as the light-emitting diodes 61G and 612', and their function and component functions can be compared to the light-emitting diodes 21A and 212. The light source device of the present embodiment further includes resistors 62〇, 624 and 626, 1 = Γ and 624 接 接 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The other end is coupled to the anode end of the light-emitting diode 61. 12 < S ) 1377541 NVT-2006-092 22321 twf.doc / n The biggest difference from the above embodiment is that when the output end of the control module can directly output the pulse width modulation signal, the light source device of the embodiment can directly It is coupled to the output to reduce circuit components and circuit usage area. Referring to FIG. 3A and FIG. 6 together, when the pulse width modulation signal is dry in the period T1, it is in a state of logic still potential. At this time, the light-emitting diode 61 is guided, and the base end of the NPN bipolar transistor 607 is in a state of logic high power two. Therefore, the NPN bipolar transistor 607 is turned on, so that the collector terminal of the NpN bipolar transistor 607 forms a logic low potential with the node of the resistor 62, so that the LED 612 is turned off. _ ^ When the pulse width modulation signal is at period Τ2, it is in a logic low state. At this time, the light-emitting diode 61 is turned off, and the voltage of the base & ΝρΝ of the double-carrier electric crystal 607 is in a logic low state. Therefore, the νρν bipolar transistor 607 is also turned off. At this time, the power supply voltage Vdd, the resistor 620, the light-emitting diode 612, and the ground GND form a loop, thereby turning on the light-emitting diode 612.曰 'When the control module directly outputs a preset voltage, the preset voltage is between the conduction of the light-emitting diode 610 and the conduction of the NPN dual-carrier transistor. Therefore, the light-emitting diode 61〇 is worn, and the two-carrier transistor 607 is turned on, so that the set terminal of the brain bi-carrier transistor 6〇7 forms a logic low with the node of the resistor 62G, so that the light is emitted. The one pole 612 is in an off state. Figure 7 is a green light source showing another light source device in accordance with the present invention. Referring to FIG. 6 and FIG. 7, the light source device 7 of the present embodiment includes a light source 7〇3 and a control unit 7 (H. Among them, the control unit period consumption relationship and the element NVT-2006-092 22321twf.doc /n ^Power month t* can be compared to the control unit 〇6〇1, and the light source period and the 7〇5 light connection relationship with the component Wei Cai are seen as cut, 6 () 3 and 6 () 5. In addition, = The light source period and 7〇5 of the embodiment may be, for example, the light-emitting diodes 71〇 and 2', and the subtraction and element functions may be compared to the light-emitting diodes (10) and 612. The light source device of the present embodiment further includes a resistor 72〇. 724 and 726, wherein the consumption relationship and the function of the resistors 72 〇, 724 and 726 can be compared to the resistors 620, 624 and 626, respectively. - In this embodiment, the biggest difference from the above embodiment is that the control unit 701 is a PNP bipolar transistor 7〇7. Please refer to the reference 5A and FIG. 7 'When the pulse width modulation signal is at the anode end and the cathode end of the period T4 _ 'light emitting diode 71〇, the voltage difference will be greater than Turning on the voltage so that the light-emitting diode = 〇 will be turned on. In addition, the ΡΝΡ double-carrier transistor 7〇7 will be turned on, making it extremely extreme. The node of the resistor 72G is turned to a low potential, so that the light-emitting diode 712 is in a wearing state. Although the pulse width modulation signal is at a period of Τ5, the pulse width modulation signal is 〇ν, and the day τγ 'lighting diode Both the body 710 and the ι Ν 双 bipolar transistor 7 〇 7 are turned off, so that the power supply voltages vdd, 33 and 720, the light emitting diode 712, and the ground GND form a loop, thereby turning on the light emitting diode 712. The control module of the embodiment rotates a preset voltage between the turn-on voltage of the LED 710 and the turn-on voltage of the pNp bipolar transistor 7〇7. Therefore, the LED 71〇 will be cut off, and the pNp bipolar transistor 707 will be turned on, so that the collector of the pNp bipolar transistor 7〇7 forms a logic low with the node of the resistor 720, so that the 1377541 NVT-2006- 092 22321twf.doc/n _). Will control; light r conduction state (step and third voltage potential. When the control voltage is two voltage =, the first: voltage potential light source will be turned on, and the second light source will be turned off a voltage for the third voltage electricity two == = off. When the control source is turned on, the w handle will be turned off, and the second light

Figure 11 is not a method of controlling two switching devices from one end in accordance with a preferred embodiment of the present invention. Please refer to (4) u, t when 3 outputs a signal, then the output signal is sent to the switching device, and (4) the signal is logic high and logic low (4), such as the signal or pulse amplitude modulation signal. See words

The control method of the switching device of this embodiment includes receiving a signal (step S1101) 'generating a control voltage according to the signal (step Sii 〇 3) = then, determining a conduction state of the switch according to the control voltage (step S110 is to control the voltage) Dividing into a first voltage potential, a second voltage potential and a third voltage potential. When the control voltage is the first voltage potential, the first switch is turned on, and the second switch is not turned on, the first switch and the second switch For example, it is a light-emitting diode. When the control voltage is the second voltage potential, neither the first switch nor the second switch is turned on. When the control voltage is the third voltage potential, the first switch is not turned on. The second switch is turned on. In summary, the control method of the light source device of the present invention can simultaneously control two light sources by transmitting a signal to the light source device at one output end of the control module. In the integrated wafer, the output of the control module can be saved by the control method of the light source NVT-2006-092 22321 twf.doc/n device of the present invention. Although the present invention has been preferably implemented The disclosure of the present invention is not intended to limit the invention, and it is intended to be a part of the invention. The scope of the patent application is subject to change. [Simplified Schematic Description] Fig. 1 is a diagram showing a control circuit of a conventional light-emitting diode.

Fig. 2 is a circuit diagram showing a light source device in accordance with a preferred embodiment of the present invention. 3A and 3B are diagrams showing a pulse width modulation signal in accordance with a preferred embodiment of the present invention. Fig. 4 is a view showing another light source device of the present invention. 5A and 5B are diagrams showing another pulse width modulation signal of the present invention. Figure 6 is another light source device illustrating the present invention. Fig. 7 is a view showing another light source device of the present invention.

Figure 8 is a view showing a switching device of a preferred embodiment of the present invention. Figure 9 is a diagram showing another switching device of the present invention. Fig. 10 is a view showing a control method of a switching device which is a preferred embodiment of the present invention. Figure 11 is a diagram showing a method of controlling a two-switch device from a single output terminal in accordance with a preferred embodiment of the present invention. [Description of main component symbols] 103: Control modules 105, 107, 220, 222, 224, 226, 420, 422, 424, 426, 17 1377541 NVT-2006-092 22321 twf.doc/n 420, 424, 426, 620 624 '626, 720, 724, 726: electric p and 110, 112, 210, 212, 410, 412, 610, 612, 710, 712: light-emitting diodes 200, 400, 600: light source devices 201, 401, 6 (U, 701: control unit 203, 205, 403, 405, 603, 605, 703, 705: light source 206, 406: voltage generating unit 207, 407, 607, 707: transistor 230, 430: capacitor 800, 900 Switching device 801, 803, 901, 903: switch 805: control circuit GND: ground terminal Ή, T2, T3, T4, T5, T6: period Vdd: voltage S1001, S1〇〇3, S1005, S1101, S1103, S1105 :Step 18

Claims (1)

1377541 101-5-16 A - ^ Γ 曰 曰 曰 ... 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Inputting a pulse width modulation signal to the light source device; and generating a control voltage according to the potential of the pulse width modulation signal, wherein the voltage is divided into a -first voltage potential, a second voltage potential plate, a first voltage potential 'At the first voltage potential, the first light source is turned on and the second light source is turned off. At the second voltage potential, the first light source and the second light source are both turned off, and at the third voltage potential The first aperture is turned off and the second source is turned on. 2. The light source device control method according to claim 1, wherein the potential of the pulse width modulation signal is converted to the control voltage by a capacitance-resistance (RC) charging step. 3. The method of controlling a light source according to claim 1, wherein the first light source is a light emitting diode. 10. Patent application scope: 4. The method of controlling a light source device according to claim 1, wherein the second light source is a light emitting diode. 5. A method for controlling a switch device with a single output terminal, comprising: inputting a signal from the single output terminal to the switch device; and generating a control voltage according to a potential of the signal, wherein the control voltage region is one Zhuo, a voltage potential, a first electric power, and a third electric ink potential 'where the first switch is turned on, and the second switch is turned on, and the second switch is not turned on, in the second At the voltage potential, the first switch and the read 19 1377541 101-5-16 are both unsatisfactory, and at the third voltage potential, the _th switch is not turned on, and the second switch is turned on. 6. The method of controlling the two-switch device by the single-wheel terminal as described in claim 5, wherein the signal is a pulse width modulation (PWM) signal having the same clock period. 7. A method of controlling two switching devices by a single wheel terminal as recited in claim 5, wherein the signal is a signal alternating between a logic high potential and a logic low potential. 8. The method of controlling a two-switch device by a single wheel outlet as described in claim 5, wherein the signal is a variable clock s-s, but the clock cycle is the same. Change (Pulse AmpUtuWde Modulation, PAM) signal. 9. The method of claim 2, wherein the first switch is illuminating and has 10. The single-wheel output control according to item 5 of the patent application has In the method of two switching devices, the second switch is a light emitting diode/11. A light source device comprising: a first light source and a second light source; and = > The control unit is configured to receive a signal input by the external circuit, and generate a control voltage according to the potential of the signal, wherein the control voltage is divided into a first piezoelectric position, a second voltage potential, and a third voltage potential, wherein When the 亥5 ( (four) position is 'the first system is turned on, and the second light source is off — the voltage potential is 'the first light source and the second light source are both off' and at the third voltage potential, the first light source _ And the second 20 1377541 101-5-16 light source is turned on. 12. The light source device of claim 11, wherein the signal is a Pulse Width Modulation (PWM) signal having the same clock cycle. 13. The light source device of claim 1, wherein the signal is a signal that alternates between a logic high potential and a logic low potential. 14. The light source device of claim 11, wherein the signal is a Pulse Amplitude Modulation (PAM) signal having a variable clock amplitude but the same clock period. 15. The light source device of claim n, wherein the first light source is a light emitting diode. 16. The light source device of claim 11, wherein the first light source is a light emitting diode. 17. The light source device of claim n, wherein the control unit comprises a double-carrier transistor. 18. The light source device of claim 11, wherein the control unit comprises a double-carrier transistor. 19. The light source device of claim 11, wherein the control unit includes a voltage generating unit to convert the potential of the signal to the voltage. The light source device of claim 19, wherein the power generating unit is a capacitor/resistor (RC) circuit. 21. A switching device comprising: - a first switch and a second switch; and 21 101-5-16 material (4) miscellaneous from No. 1, and according to a control voltage, wherein the control voltage is divided into a first secret - the second voltage potential and the H piezoelectric position, when the first voltage potential is pressed i, the first switch is turned on, and the -* is turned on, and at the second voltage potential, the first P system and the first The two switches are not turned on, and at the third voltage potential, the first switch is not conducting ' and the second switch is turned on. 22. The switch device of claim 21, wherein the signal is a Pulse Width M (dulati (10), PWM) signal having the same clock cycle. . 23. The switch device of claim 21, wherein the signal is a signal that alternates between a logic high potential and a logic low potential. 24. The switch device of claim 21, wherein the signal is a Pulse Amplitude Modulation (具有) signal having a variable clock amplitude but the same clock cycle. 25. The switching device of claim 21, wherein the first switch is a light emitting diode. 26. The switching device of claim 21, wherein the second switch is a light emitting diode. 27. The switching device of claim 21, wherein the control unit is an NPN bipolar transistor. 28. The switching device of claim 21, wherein the control unit is a PNP bipolar transistor. twenty two