Input control circuit of a projection device and projection device

Abstract

The utility model discloses an input control circuit and projection device of projection device, and input control circuit includes: input module, it is used for responding input action and produces input signal, control module, with input module electricity is connected, and control module is used for producing first control signal and second control signal according to input signal, first light source module, with control module electricity is connected, and first light source module is used for producing corresponding light effect according to first control signal, motor module, with control module electricity is connected, and motor module is used for rotating or stopping according to second control signal, and corresponding drive interference piece movement or stop, wherein, the light effect of first light source module produces and projects outward through interference piece and forms projection effect, and the user can control first light source module to produce corresponding light effect through input module, and control motor module drives interference piece movement or stop, thereby the user can change projection effect according to need.

Description

[Technical Field]

[0001] This utility model relates to the technical field of projection devices, and in particular to an input control circuit and a projection device. [Background Technology]

[0002] An existing projection device includes a first light source assembly, which consists of a light source and optical elements. The light source emits light and projects it outward through the optical elements to form a projection effect. The projection effect of this projection device is relatively simple, and users cannot change the projection effect as needed, which seriously affects the user experience. [Utility Model Content]

[0003] To address the problems encountered in the background technology, this utility model provides an input control circuit and a projection device, allowing users to change the projection effect as needed.

[0004] To achieve the above objectives, the present invention employs the following technical means:

[0005] The first aspect of this utility model provides an input control circuit for a projection device, comprising:

[0006] The input module is used to generate input signals in response to input actions.

[0007] A control module, which is electrically connected to the input module, is used to generate a first control signal and a second control signal according to the input signal;

[0008] A first light source module is electrically connected to the control module, and the first light source module is used to generate a corresponding light effect according to the first control signal;

[0009] The motor module is electrically connected to the control module. The motor module is used to rotate or stop according to the second control signal, thereby driving the interference component to move or stop accordingly.

[0010] The light effect generated by the first light source module is projected outward through the interference element to form a projection effect.

[0011] In some embodiments, the input module includes a push button switch, and / or a touch switch, and / or a tactile switch.

[0012] In some embodiments, the input module includes:

[0013] A first resistor, the first end of which is used to receive the input voltage from the button, and the second end of the first resistor is electrically connected to the control module;

[0014] A plurality of second resistors, wherein the first end of the plurality of second resistors is electrically connected to the second end of the first resistor, and wherein the resistance values ​​of the plurality of second resistors are different;

[0015] Multiple push-button switches are provided, with the first terminals of each push-button switch electrically connected to the second terminals of their respective corresponding second resistors, and the second terminals of the push-button switches being grounded.

[0016] In some embodiments, the first control signal includes a plurality of first sub-control signals, and the first light source module includes:

[0017] Multiple first light sources, the multiple first light sources are used to emit light;

[0018] Multiple first light source driving modules are electrically connected between the control module and the corresponding first light source, and the multiple first light source driving modules are used to drive the corresponding first light source to turn on or off according to the corresponding first sub-control signal.

[0019] In some embodiments, the first light source driving module includes:

[0020] The third resistor has its first end electrically connected to the control module.

[0021] The first MOS transistor has its gate electrically connected to the second terminal of the third resistor, its drain electrically connected to the corresponding first light source, and its source grounded.

[0022] The fourth resistor has its first end electrically connected to the gate of the first MOS transistor, and its second end electrically connected to the source of the first MOS transistor.

[0023] In some embodiments, the motor module includes:

[0024] An electric motor, used to drive the interference element to move;

[0025] A motor drive module is electrically connected between the control module and the motor, and the motor drive module is used to rotate or stop according to the second control signal.

[0026] In some embodiments, the motor drive module includes:

[0027] The fifth resistor has its first end electrically connected to the control module;

[0028] The gate of the second MOS transistor is electrically connected to the second terminal of the fifth resistor, and the source of the second MOS transistor is grounded.

[0029] The sixth resistor has its first end electrically connected to the gate of the second MOS transistor, and its second end electrically connected to the source of the second MOS transistor.

[0030] The seventh resistor has its first end electrically connected to the drain of the second MOS transistor, and its second end electrically connected to the motor.

[0031] The first diode is electrically connected in reverse to the motor;

[0032] The first capacitor has its first terminal electrically connected to the first terminal of the first diode, and its second terminal is electrically connected to the second terminal of the first diode.

[0033] In some embodiments, the control module is further configured to generate a third control signal based on the input signal, and the input control circuit further includes:

[0034] The second light source module is electrically connected to the control module. The second light source module is used to turn the screen on or off according to the third control signal. The second light source module serves as the backlight of the display screen.

[0035] In some embodiments, the second light source module includes:

[0036] The second light source serves as the backlight for the display screen;

[0037] The second light source driving module is electrically connected between the control module and the second light source. The second light source driving module is used to drive the second light source to turn on or off according to the third control signal.

[0038] A second aspect of this invention provides a projection device, including the input control circuit of the projection device of the first aspect.

[0039] Compared with the prior art, the input control circuit and projection device of this utility model have the following advantages:

[0040] Users can control the first light source module to produce corresponding light effects through the input module, and control the motor module to drive the interference element to move or stop, so that the light effect produced by the first light source module is projected outward through the interference element to form a projection effect, and thus users can change the projection effect as needed. [Attached Image Description]

[0041] Figure 1 A circuit diagram of the input module of the input control circuit of the projection device provided in an embodiment of the present invention;

[0042] Figure 2A circuit diagram of the control module of the input control circuit of the projection device provided in an embodiment of the present invention;

[0043] Figure 3 A circuit diagram of the first light source module of the input control circuit of a projection device provided in an embodiment of the present invention;

[0044] Figure 4 A circuit diagram of the motor module of the input control circuit of a projection device provided in an embodiment of the present invention;

[0045] Figure 5 A circuit diagram of the second light source module of the input control circuit of the projection device provided in an embodiment of the present invention.

[0046] Explanation of reference numerals in the accompanying drawings for specific embodiments:

[0047] First light source driving module 131 First light source driving module 132 First light source driving module 133 First light source driving module 134 Motor Module 140 Motor drive module 141 Second light source module 150 Second light source driving module 151

Detailed Implementation Methods

[0048] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features of this utility model can be combined with each other.

[0049] The following description sets forth many specific details in order to provide a full understanding of the present invention. The described embodiments are only some, not all, of the embodiments of the present invention.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0051] It should be further noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] In this utility model, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone, where A and B can be singular or plural. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and drawings of this utility model are used to distinguish similar objects, not to describe a specific order or sequence.

[0053] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0054] This utility model embodiment provides a projection device, which includes an input control circuit section, such as... Figures 1-5 As shown, the input control circuit includes an input module 110, a control module 120, a first light source module 130, a motor module 140, and a second light source module 150.

[0055] like Figure 1 As shown, the input module 110 serves as the part for user interaction with the projection device. The user can control the projection device through the input module 110. Specifically, the user can perform an input action on the input module 110. The input module 110 generates an input signal in response to the user's input action. The input signal generated by the input module 110 is then transmitted to the control module 120 so that the control module 120 can perform control operations based on the input signal.

[0056] In some embodiments, such as Figure 1 As shown, the input module can be one or a combination of key switches, touch switches, and tactile switches. Correspondingly, the input action performed by the user on the input module 110 can be one or a combination of key switches, touch switches, and tactile switches. The input module 110 generates an input signal in response to the input action performed by the user on the input module 110 in the above manner.

[0057] In some embodiments, such as Figure 1As shown, the input module 110 includes a first resistor R1, second resistors R2-1 to R2-5 (i.e., second resistors R2-1, R2-2, R2-3, R2-4, and R2-5), and push-button switches KEY1 to KEY5 (i.e., push-button switches KEY1, KEY2, KEY3, KEY4, and KEY5). The first end of the first resistor R1 is used to receive the button input voltage and is electrically connected to the button input voltage terminal, and the second end of the first resistor R1 is electrically connected to the control module 110. The first ends of the second resistors R2-1 to R2-5 are electrically connected to the second end of the first resistor R1, and the resistance values ​​of the second resistors R2-1 to R2-5 are different. The first ends of the push-button switches KEY1 to KEY5 are respectively electrically connected to the second ends of the corresponding second resistors R2-1 to R2-5 (i.e., one-to-one electrical connection), and the second ends of the push-button switches KEY1 to KEY5 are grounded. Of course, in other embodiments, the number of push-button switches can be reduced according to requirements, and the number of corresponding second resistors can also be reduced accordingly. Furthermore, in order to debouncing the push-button switch, a capacitor (i.e., a debouncing circuit) can be connected between the second terminal of the first resistor R1 and the GND terminal.

[0058] like Figure 2As shown, the control module 120 is electrically connected to the input module 110. The control module 120 can be an MCU chip. Pin 2 of the control module 120 (i.e., the VBAT pin, serving as the operating voltage receiver) is electrically connected to the positive terminal of the battery / charging port to receive the operating voltage provided by the battery / charging port. Pin 2 of the control module 120 is also grounded (i.e., electrically connected to the GND terminal) through capacitors C5 and C6. Pin 13 of the control module 120 (i.e., the VSS pin) is grounded, and pin 4 of the control module 120 (i.e., the IOVDD pin) is grounded through capacitor C7. Pin 4 of block 120 is also electrically connected to the first resistor R1 to power input module 110. Pin 8 of control module 120 (i.e., AD pin) is electrically connected to the second end of the first resistor R1. Control module 120 receives analog signals generated by the buttons through AD pin (i.e., analog-to-digital converter interface) and converts the analog signals into digital signals through ADC (i.e., analog-to-digital converter). Multiple buttons are detected using the principle of ADC combined with resistor voltage division (i.e., resistors in input module 110). This method effectively saves pin resources (i.e., IO pins) of control module 120 and improves detection efficiency. Of course, in other embodiments, each switch in input module 110 can also be electrically connected to one pin of control module 120. This method can also achieve button detection, but it will occupy pin resources of control module 120. Control module 120 is used to detect buttons based on the input signals generated by input module 110, thereby detecting which button is pressed and generating one or more combinations of a first control signal, a second control signal, and a third control signal. The control signals generated by control module 120 correspond to the functions configured on the buttons.

[0059] like Figure 3 As shown, the first light source module 130 is electrically connected to the control module 120. The first light source module 130 receives the first control signal generated by the control module 120 and is used to generate the corresponding light effect according to the first control signal.

[0060] In some embodiments, such as Figure 3As shown, the first light source module 130 includes four first light sources of four colors (RGBW) (such as RGBW four-color LEDs, corresponding to four LEDs) and four first light source driving modules 131 to 134 (i.e., first light source driving module 131, first light source driving module 132, first light source driving module 133, and first light source driving module 134). The four first light sources are used to emit light of different colors. The positive terminals of the four first light sources are simultaneously connected to the voltage terminal (i.e., +3.3V) through the 5th pin of the connector J1. The negative terminals of the four first light sources are respectively connected to their corresponding first light source driving modules 131 to 134 through the other four pins of the connector J1. The control module 120 also includes four first light source control pins (i.e., pins 17, 18, 19, and 19). The first control signal includes four first sub-control signals (PWM1, PWM2, PWM3, and PWM4), which are transmitted to the corresponding first light source driving modules 131 to 134 through different pins. The first light source driving modules 131 to 134 are respectively electrically connected between the control module 120 and the corresponding first light source. The first control signal includes four first sub-control signals (PWM1, PWM2, PWM3, and PWM4), which are transmitted to the corresponding first light source driving modules 131 to 134 through different pins. The first light source driving modules 131 to 134 are used to drive the corresponding first light source to turn on or off according to the corresponding first sub-control signals. Since the first light source module 130 includes light sources of four colors (RGBW), the on or off of the four colors of light sources can have multiple combinations, and each combination can form a light effect, thereby enriching the projection effect of the first light source module 130. Of course, in other embodiments, the number of first light sources can be reduced according to needs, and the number of corresponding first light source driving modules can also be reduced accordingly.

[0061] In some embodiments, such as Figure 3 As shown, the first light source driving modules 131 to 134 respectively include third resistors R3-1 to R3-4, first MOSFETs Q1-1 to Q1-4, and fourth resistors R4-1 to R4-4. The first ends of the third resistors R3-1 to R3-4 are electrically connected to the first light source control pins corresponding to the control module 120. The gates of the first MOSFETs Q1-1 to Q1-4 are electrically connected to the second ends of the third resistors R3-1 to R3-4. The drains of the first MOSFETs Q1-1 to Q1-4 are electrically connected to the corresponding first light sources through connector J1. The sources of the first MOSFETs Q1-1 to Q1-4 are grounded. The first ends of the fourth resistors R4-1 to R4-4 are electrically connected to the gates of the first MOSFETs Q1-1 to Q1-4. The second ends of the fourth resistors R4-1 to R4-4 are electrically connected to the sources of the first MOSFETs Q1-1 to Q1-4.

[0062] like Figure 4As shown, the motor module 140 is electrically connected to the control module 120. The motor module 140 receives the second control signal generated by the control module 120. The motor module 140 is used to rotate or stop according to the second control signal, and accordingly drive the interference element to move or stop. The movement mode of the interference element can be rotation. The light effect generated by the first light source in the first light source module 130 is projected outward through the interference element to form a projection effect.

[0063] In some embodiments, such as Figure 4 As shown, the motor module 140 includes a motor and a motor drive module 141. The rotation shaft of the motor is fixed to the interference element, so the motor can drive the interference element to move (e.g., rotate) when it is working. The positive terminal of the motor is electrically connected to the voltage terminal (i.e., +3.3V) through the first pin of the connector J2, and the negative terminal of the motor is electrically connected to the motor drive module 141 through the second pin of the connector J2. The control module 120 also includes a motor control pin (i.e., pin 16), which is electrically connected to the motor drive module 141, so that the motor drive module 141 is electrically connected between the control module 120 and the motor. The motor drive module 141 is used to rotate or stop according to the second control signal. Of course, in other embodiments, the second control signal can also control the speed of the motor. The motor control interference element can further enrich the projection effect of the first light source module 130.

[0064] In some embodiments, such as Figure 4 As shown, the motor drive module 141 includes a fifth resistor R5, a second MOSFET Q2, a sixth resistor R6, a seventh resistor R7, a first diode D1, and a first capacitor C1. The first terminal of the fifth resistor R5 is electrically connected to pin 16 of the control module 120; the gate of the second MOSFET Q2 is electrically connected to the second terminal of the fifth resistor R5, and the source of the second MOSFET Q2 is grounded; the first terminal of the sixth resistor R6 is electrically connected to the gate of the second MOSFET Q2, and the second terminal of the sixth resistor R6 is electrically connected to the source of the second MOSFET Q2; the first terminal of the seventh resistor R7 is electrically connected to the drain of the second MOSFET Q2, and the second terminal of the seventh resistor R7 is electrically connected to the drain of the second MOSFET Q2. The first diode D1 is electrically connected to the motor via connector J2; the first diode D1 is electrically connected to the motor in reverse via connector J2 (i.e., the positive terminal of the first diode D1 is electrically connected to the negative terminal of the motor, and the negative terminal of the first diode D1 is electrically connected to the positive terminal of the motor); the first terminal of the first capacitor C1 is electrically connected to the first terminal of the first diode D1, and the second terminal of the first capacitor C1 is electrically connected to the second terminal of the first diode D1. The first diode D1 and the first capacitor C1 can protect the motor. The second control signal controls the motor speed by adjusting the gate voltage of the second MOSFET Q2, thereby changing the conduction level of the MOSFET and thus adjusting the motor speed.

[0065] like Figure 5As shown, the second light source module 150 is electrically connected to the control module 120. The second light source module 150 receives the first control signal generated by the control module 120. The second light source module 150 is used to turn on or off according to the third control signal. The second light source module 150 serves as the backlight of the display screen (LCD).

[0066] In some embodiments, such as Figure 5 As shown, the second light source module 150 includes a second light source and a second light source driving module 151. The second light source serves as the backlight of the display screen (such as an LED light). The positive terminal of the second light source is electrically connected to a voltage terminal (i.e., +3.3V) through the second pin of connector J3, and the negative terminal of the second light source is electrically connected to the second light source driving module 151 through the first pin of connector J3. The control module 120 also includes a second light source control pin (i.e., pin 22), which is electrically connected to the second light source driving module 151, so that the second light source driving module 151 is electrically connected between the control module 120 and the second light source. The second light source driving module 150 is used to drive the second light source to turn on or off according to a third control signal. When the second light source is on, it can emit white light and, in conjunction with the optical system, project the image (such as lyrics, patterns, etc.) displayed on the display screen (LCD) outward (e.g., onto the screen). The above projection method is LCD projection technology, so the optical system will not be elaborated here. Of course, in other embodiments, the third control signal can also control the brightness of the second light source to further enrich the effect of LCD projection.

[0067] In some embodiments, such as Figure 5 As shown, the second light source driving module 151 includes an eighth resistor R8, a third MOSFET Q3, and a ninth resistor R9. The first end of the eighth resistor R8 is electrically connected to pin 22 of the control module 120. The gate of the third MOSFET Q3 is electrically connected to the second end of the eighth resistor R8, and the source of the third MOSFET Q3 is grounded. The first end of the ninth resistor R9 is electrically connected to the gate of the third MOSFET Q3, and the second end of the ninth resistor R9 is electrically connected to the source of the third MOSFET Q3. The drain of the third MOSFET Q3 is electrically connected to the second light source through connector J3. The brightness of the second light source can be controlled by adjusting the gate voltage of the third MOSFET Q3, thereby changing the conduction level of the MOSFET and thus adjusting the brightness of the second light source.

[0068] In summary, the control circuit of this utility model has the following beneficial effects:

[0069] Users can control the first light source module 130 to produce corresponding light effects through the input module 110, and control the motor module 140 to drive the interference element to move or stop, so that the light effect produced by the first light source module 130 is projected outward through the interference element to form a projection effect, thereby allowing users to change the projection effect as needed.

[0070] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. An input control circuit for a projection device, characterized in that, include: The input module is used to generate input signals in response to input actions. A control module, which is electrically connected to the input module, is used to generate a first control signal and a second control signal according to the input signal; A first light source module is electrically connected to the control module, and the first light source module is used to generate a corresponding light effect according to the first control signal; The motor module is electrically connected to the control module. The motor module is used to rotate or stop according to the second control signal, thereby driving the interference component to move or stop accordingly. The light effect generated by the first light source module is projected outward through the interference element to form a projection effect.

2. The input control circuit of the projection device as described in claim 1, characterized in that, The input module includes a push-button switch, and / or a touch switch, and / or a tactile switch.

3. The input control circuit of the projection device as described in claim 1, characterized in that, The input module includes: A first resistor, the first end of which is used to receive the input voltage from the button, and the second end of the first resistor is electrically connected to the control module; A plurality of second resistors, wherein the first end of the plurality of second resistors is electrically connected to the second end of the first resistor, and wherein the resistance values ​​of the plurality of second resistors are different; Multiple push-button switches are provided, with the first terminals of each push-button switch electrically connected to the second terminals of their respective corresponding second resistors, and the second terminals of the push-button switches being grounded.

4. The input control circuit of the projection device according to any one of claims 1 to 3, characterized in that, The first control signal includes a plurality of first sub-control signals, and the first light source module includes a plurality of first light sources, which are used to emit light; Multiple first light source driving modules are electrically connected between the control module and the corresponding first light source, and the multiple first light source driving modules are used to drive the corresponding first light source to turn on or off according to the corresponding first sub-control signal.

5. The input control circuit of the projection device as described in claim 4, characterized in that, The first light source driving module includes: The third resistor has its first end electrically connected to the control module. The first MOS transistor has its gate electrically connected to the second terminal of the third resistor, its drain electrically connected to the corresponding first light source, and its source grounded. The fourth resistor has its first end electrically connected to the gate of the first MOS transistor, and its second end electrically connected to the source of the first MOS transistor.

6. The input control circuit of the projection device according to any one of claims 1 to 3, characterized in that, The motor module includes: An electric motor, used to drive the interference element to move; A motor drive module is electrically connected between the control module and the motor, and the motor drive module is used to rotate or stop according to the second control signal.

7. The input control circuit of the projection device as described in claim 6, characterized in that, The motor drive module includes: The fifth resistor has its first end electrically connected to the control module; The gate of the second MOS transistor is electrically connected to the second terminal of the fifth resistor, and the source of the second MOS transistor is grounded. The sixth resistor has its first end electrically connected to the gate of the second MOS transistor, and its second end electrically connected to the source of the second MOS transistor. The seventh resistor has its first end electrically connected to the drain of the second MOS transistor, and its second end electrically connected to the motor. The first diode is electrically connected in reverse to the motor; The first capacitor has its first terminal electrically connected to the first terminal of the first diode, and its second terminal is electrically connected to the second terminal of the first diode.

8. The input control circuit of the projection device according to any one of claims 1 to 3, characterized in that, The control module is further configured to generate a third control signal based on the input signal, and the input control circuit further includes: The second light source module is electrically connected to the control module. The second light source module is used to turn the screen on or off according to the third control signal. The second light source module serves as the backlight of the display screen.

9. The input control circuit of the projection device as described in claim 8, characterized in that, The second light source module includes: The second light source serves as the backlight for the display screen; The second light source driving module is electrically connected between the control module and the second light source. The second light source driving module is used to drive the second light source to turn on or off according to the third control signal.

10. A projection device, characterized in that, Includes the input control circuit of the projection device as described in any one of claims 1 to 9.

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