Projector and control circuit and asynchronous display method thereof

Abstract

According to the projector and the control circuit and the asynchronous display method thereof provided by the invention, the projector control circuit controls the light machine driving unit and the touch screen driving unit to output the changed display content through the electric signal, so that the touch screen display unit and the horizontal screen display unit respectively display the transmitted image and video data; the display content of the touch screen and the projection content of the projection light machine are changed through the control signal of the touch screen, the touch screen and the projection light machine display different contents, so that the asynchronous display effect is achieved, the touch control on the touch screen changes the display content of the touch screen and the projection light machine, the projector can be separated from the control of a remote controller, and the user experience is improved. And the user can use more conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of projectors, and in particular to a projector and a control circuit thereof, and an asynchronous display method. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals.

[0003] Traditional projectors can only be operated using a remote control or buttons. If you want to control the operation of the projector, you need to use the remote control, but the remote control is easy to lose or difficult to find at home, making the projector unusable. Summary of the invention

[0004] The technical problem to be solved by the present application is that a traditional projector can only be operated using a remote control or buttons. If you want to control the operation of the projector, you need to operate it through the remote control, but the remote control is easy to lose or difficult to find at home, resulting in the projector being unusable.

[0005] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a projector and a control circuit thereof, and an asynchronous display method.

[0006] The present invention discloses a projector control circuit, which comprises: A projection optical machine module, including a horizontal screen display unit; A touch screen module, comprising a touch screen control unit and a touch screen display unit, wherein the touch screen control unit is connected to the touch screen display unit, and the touch screen display unit and the horizontal screen display unit output different display contents; A connection module, comprising a control signal connection unit, a first display signal output unit and a second display signal output unit, wherein the first display signal output unit is connected to the horizontal screen display unit, the second display signal output unit is connected to the touch screen display unit, the control signal connection unit is connected to the touch screen control unit, the control signal connection unit is used to receive a touch signal from the touch screen control unit, and the display contents of the first display signal output unit and the second display signal output unit are different; The main control module includes a control unit, an optical-mechanical driving unit, a touch screen signal unit and a touch screen driving unit. The first display signal output unit is connected to the optical-mechanical driving unit, the second display signal output unit is connected to the touch screen driving unit, the control signal connection unit is connected to the touch screen signal unit, and the control unit is respectively connected to the optical-mechanical driving unit, the touch screen signal unit and the touch screen driving unit.

[0007] Preferably, the first display signal output unit transmits the first display content to the horizontal screen display unit, and the second display signal output unit transmits the second display content to the touch screen display unit; The control signal connection unit transmits a control signal to the main control module, and the control unit changes the first display content and the second display content according to the instruction information corresponding to the control signal, and generates the third display content and the fourth display content accordingly.

[0008] Preferably, the projection optical machine module includes a projection optical machine backlight unit, and the touch screen module includes a touch screen backlight unit; The main control module includes an optical machine backlight switch unit and a touch screen backlight switch unit. The optical machine backlight switch unit is connected to the projection optical machine backlight unit, and the touch screen backlight switch unit is connected to the touch screen backlight unit.

[0009] Preferably, it comprises a power amplifier module and an audio input module, and the main control module is connected to the power amplifier module and the audio input module respectively.

[0010] Preferably, a switching module is included, wherein the switching module adopts a six-axis gyroscope; The main control module includes a switching unit, and the switching unit is connected to the switching module.

[0011] Preferably, the projection optical machine module comprises a projection backlight brightness adjustment control unit, and the projection backlight brightness adjustment control unit is connected to the main control module.

[0012] Preferably, it comprises a power supply module, the power supply module is electrically connected to the main control module, and the power supply module is connected to an external power source.

[0013] Preferably, it comprises a wireless transmission module, and the wireless transmission module is connected to the main control module.

[0014] In a second aspect, the present invention discloses a projector, which includes the above-mentioned projector control circuit, a housing, a touch screen, and a projection optical machine; The projector control circuit is connected to the touch screen and the projection light engine respectively, and the light emitting positions of the touch screen and the projection light engine are arranged on two different surfaces of the housing.

[0015] In a third aspect, the present invention discloses a projector asynchronous display method, which is applied to a projector and comprises the following steps: The touch screen displays the first display content, and the projection optical machine projects the second display content; The touch screen obtains the touch signal and transmits an electrical signal corresponding to the touch signal to the main control module; The main control module responds to the electrical signal and adjusts the first display content and the second display content according to the electrical signal to obtain the third display content and the fourth display content; The third display content is sent to the touch screen, and the touch screen changes to display the third display content. The fourth display content is sent to the projector, and the projector changes to display the fourth display content.

[0016] The above technical solution provided by this application has the following advantages compared with the prior art: The present application provides a projector and its control circuit, and an asynchronous display method, wherein the projector control circuit is connected to the connection module through a main control module, the first display signal output unit and the second display signal output unit of the connection module are respectively connected to the projection optical machine module and the touch screen module, the touch signal generated on the touch screen is obtained by the touch screen control unit, and is sent to the touch screen signal unit in the main control module via the control signal connection unit, the control unit controls the change of display content according to the signal obtained by the touch screen signal unit, and adjusts the display content of the touch screen and the projection optical machine respectively, that is, the optical machine driving unit and the touch screen driving unit are controlled by electrical signals to output the changed display content, so that the touch screen display unit and the horizontal screen display unit respectively display the transmitted image and video data, and the touch screen display content and the projection optical machine projection content are changed by the control signal of the touch screen, and the touch screen and the projection optical machine display different contents, thereby achieving the effect of asynchronous display, and the touch control on the touch screen changes the content displayed by the touch screen and the projection optical machine, so that the projector can be separated from the control of the remote control, and the user is more convenient to use.

[0017] For the projector, a projection light machine and a touch screen are set. The light-emitting positions of the projection light machine and the touch screen are set on different surfaces of the outer shell. The touch screen can be controlled by touching with fingers to change the display content of the touch screen. In addition, the touch screen can also generate a control signal to change the projection content of the projection light machine, so that the projection light machine is controlled by the touch screen, and the display content of the projection light machine can be changed by controlling the touch screen, thereby allowing the projector to be separated from the remote control and more convenient to use.

[0018] Since the contents displayed by the projection machine and the touch screen are different, and the touch signal of the touch screen can control the display content of the projection machine to change, the function of a song request machine can be realized. The touch screen displays a song list, and the projection machine projects the lyrics of the song and the corresponding MV of the song. Users can sing through the projector. In addition, the projector can realize the function of a learning machine. By controlling the touch screen, the content projected by the projector can be changed, and the projection machine projects the learning content. During class, the teacher can directly control the interface on the touch screen, and the projection machine changes the display content according to the operation, making it more convenient for teachers to teach in class. At the same time, children can avoid using small-size screens for a long time, which protects their eyesight.

[0019] For the asynchronous display method of the projector, the touch screen and the projector light machine display different contents at the same time. The user touches the touch screen with his fingers, and changes the display content of the projector light machine according to the interface displayed on the touch screen. The projector changes the display content accordingly, and the touch screen and the projector light machine respectively display the changed display content. That is, the touch screen can control the content projected by the projector light machine. At the same time, the touch of the touch screen can also change its own content. Changing the content displayed on the touch screen and the projector light machine by touching the touch screen is more convenient than traditional remote control control. In addition, compared with mechanical buttons, touch control can generate virtual buttons at will, and can display the control content in response to the virtual buttons, making operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A module diagram of a projector control circuit provided in this application; Figure 2 A module diagram of a main control module of a projector control circuit provided in the present application; Figure 3 A circuit diagram of a main control module of a projector control circuit provided in the present application; Figure 4 A circuit diagram of an optical-mechanical backlight switch unit of a projector control circuit provided in the present application; Figure 5 A circuit diagram of a projection backlight brightness adjustment control unit of a projector control circuit provided in the present application; Figure 6 A circuit diagram of a projection optical power supply unit of a projector control circuit provided in the present application; Figure 7 A circuit diagram of a touch screen backlight unit of a projector control circuit provided in this application; Figure 8 A circuit diagram of a touch screen control unit of a projector control circuit provided in the present application; Fig. 9 A circuit diagram of a touch screen power supply unit of a projector control circuit provided in the present application; Fig.10A circuit diagram of a first display signal output unit of a projector control circuit provided by the present application; Fig.11 A circuit diagram of a second display signal output unit of a projector control circuit provided by the present application; Fig.12 A circuit diagram of a switching module of a projector control circuit provided in the present application; Fig.13 A circuit diagram of a power amplifier module of a projector control circuit provided in the present application; Fig.14 A module diagram of a power supply module of a projector control circuit provided in the present application; Fig.15 A circuit diagram of a power switch of a projector control circuit provided in the present application; Fig.16 A circuit diagram of a standby power supply unit of a projector control circuit provided in the present application; Fig.17 A circuit diagram of a 3.3V power supply unit of a projector control circuit provided in the present application; Fig.18 A circuit diagram of a 1.8V power supply unit of a projector control circuit provided in the present application; Fig.19 A circuit diagram of a wireless transmission module of a projector control circuit provided by the present application; Fig. 20 A circuit diagram of an audio input module of a projector control circuit provided in the present application; Fig.21 A module diagram of a projector provided in this application; Fig. 22 A flowchart of the steps of a projector synchronous display method provided in this application.

[0023] 100. Projector; 1. Projector control circuit; 11. Main control module; 111. Control unit; 112. Optical-mechanical drive unit; 113. Touch screen signal unit; 114. Touch screen drive unit; 115. Optical-mechanical backlight switch unit; 116. Touch screen backlight switch unit; 12. Projection optical machine module; 121. Horizontal screen display unit; 122. Projection optical machine backlight unit; 123. Projection backlight brightness adjustment control unit; 124. Projection optical machine power supply unit; 13. Touch screen module; 131. Touch screen backlight unit; 132. Touch screen display unit; 133. Touch screen control unit; 134. Touch screen power supply unit; 14. connection module; 141. control signal connection unit; 142. first display signal output unit; 1421. first connection interface; 143. second display signal output unit; 1431. second connection interface; 15. Switch module; 16. Power amplifier module; 17. Power supply module; 171. Power supply switch; 172. Standby power supply unit; 173. 3.3V power supply unit; 174. 1.8V power supply unit; 18. Wireless transmission module; 19. Audio input module; 2. Projection light machine; 3. Touch screen. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] First, see Figure 1-20 The present invention discloses a projector control circuit 1, which includes a projection optical machine module 12, a touch screen module 13, a main control module 11 and a connection module 14. The main control module 11 is connected to the connection module 14, and the connection module 14 is respectively connected to the projection optical machine module 12 and the touch screen module 13. The projection optical machine module 12 controls the projection optical machine 2 of the projector 100, and the touch screen 3 controls the touch screen 3.

[0026] The projection optical machine module includes a horizontal screen display unit 121 and a projection optical machine backlight unit 122, wherein the horizontal screen display unit 121 is used to display the image and video data that the projection optical machine needs to project, and the projection optical machine backlight unit 122 is used to control the backlight of the projection optical machine to turn on and off; the touch screen module includes a touch screen backlight unit 131, a touch screen control unit 133 and a touch screen display unit 132, the touch screen display unit 132 is used to display images and video data, wherein the touch screen control unit 133 is used to collect touch signals of the touch screen 3, and the touch screen backlight unit 131 is used to control the backlight of the touch screen 3 to turn on and off, and the display content output by the touch screen display unit 132 is different from that output by the horizontal screen display unit 121; the connection module includes a control signal connection unit 141, a first display signal output unit 142 and a second display signal output unit 143, Among them, the first display signal output unit 142 is used to transmit image and video data to the projection optical machine, the second display signal output unit 143 is used to transmit image and video data to the touch screen, the control signal connection unit 141 is used to receive the touch signal of the touch screen control unit 133, and the display content of the first display signal output unit 142 is different from that of the second display signal output unit 143; the main control module includes a control unit 111, an optical machine driving unit 112, a touch screen signal unit 113 and a touch screen driving unit 114, the optical machine driving unit 112 is used to send the image and video data to be projected by the projection optical machine 2, the touch screen driving unit 114 is used to send the image and video data to be displayed by the touch screen 3, and the touch screen signal unit 113 is used to receive the signal transmitted by the control signal connection unit 141; the control unit 111 is used to coordinate various internal units. The touch screen control unit 133 is connected to the touch screen display unit 132, the first display signal output unit 142 is connected to the horizontal screen display unit 121, the second display signal output unit 143 is connected to the touch screen display unit 132, the control signal connection unit 141 is connected to the touch screen control unit 133, the first display signal output unit 142 is connected to the optical mechanical driving unit 112, the second display signal output unit 143 is connected to the touch screen driving unit 114, the control signal connection unit 141 is connected to the touch screen signal unit 113, and the control unit 111 is respectively connected to the optical mechanical driving unit 112, the touch screen signal unit 113 and the touch screen driving unit 114.

[0027] It can be understood that the main control module 11 is connected to the connection module 14, and the first display signal output unit 142 and the second display signal output unit 143 of the connection module 14 are respectively connected to the projection optical machine module 12 and the touch screen module 13. The touch signal generated on the touch screen is obtained by the touch screen control unit 133, and is sent to the touch screen signal unit 113 in the main control module via the control signal connection unit 141. The control unit 111 controls the change of the display content according to the signal obtained by the touch screen signal unit 113, and adjusts the display content of the touch screen and the projection optical machine respectively. That is, the optical machine driving unit 112 and the touch screen driving unit 114 are controlled by electrical signals to output the changed display content, so that the touch screen display unit 132 and the horizontal screen display unit 121 respectively display the transmitted image and video data, so as to realize the change of the touch screen display content and the projection optical machine projection content through the control signal of the touch screen. The touch screen and the projection optical machine display content are different, thereby achieving the effect of asynchronous display. The touch control on the touch screen changes the content displayed by the touch screen and the projection optical machine, so that the projector can be separated from the control of the remote control, and the user is more convenient to use.

[0028] In particular, the control signal connection unit 141 uses the IIC protocol to transmit signals.

[0029] The first display signal output unit 142 transmits the first display content to the horizontal screen display unit 121, the second display signal output unit 143 transmits the second display content to the touch screen display unit 132, the control signal connection unit 141 transmits the control signal to the main control module, and the control unit 111 changes the first display content and the second display content according to the instruction information corresponding to the control signal, and generates the third display content and the fourth display content accordingly.

[0030] It can be understood that the touch screen control unit 133 collects the touch signal of the touch screen and sends it to the touch screen signal unit 113. The touch screen signal unit 113 sends the signal corresponding to the touch signal to the control unit 111. The control unit 111 allows the optical machine driving unit 112 and the touch screen driving unit 114 to change the output data according to the signal content. The first display signal output unit 142 outputs the corresponding content to the horizontal screen display unit 121, and the second display signal output unit 143 outputs the corresponding content to the touch screen display unit 132. Since the corresponding display contents of the touch screen display unit 132 and the horizontal screen display unit 121 are different, the corresponding signals are transmitted using different signal channels to improve the stability of transmission.

[0031] Through a single main control module 11, the touch screen module 13 and the projection optical machine module 12 are controlled respectively to display corresponding contents, such as images, videos, etc., and the display contents of the two are different. The touch screen module 13 can be used as a controller to control the changes in the display contents on the projection optical machine module 12. The touch screen module 13 can also generate corresponding touch signals through touch operations to control the changes in the display contents on the touch screen module 13.

[0032] In particular, the first display signal output unit 142 includes a first connection interface 1421 , which uses a MIPI interface, and the second display signal output unit 143 includes a second connection interface 1431 , which uses a MIPI interface.

[0033] The main control module 11 includes an optical machine backlight switch unit 115 and a touch screen backlight switch unit 116. The optical machine backlight switch unit 115 is connected to the projection optical machine backlight unit 122, and the touch screen backlight switch unit 116 is connected to the touch screen backlight unit 131. The control unit 111 is connected to the optical machine backlight switch unit 115 and the touch screen backlight switch unit 116 respectively. Specifically, it is necessary to turn off the backlight of the touch screen 3 or the projection optical machine 2. The user touches the touch screen 3, and the touch screen control unit 133 obtains the touch signal of the touch screen 3 and sends it to the touch screen signal unit 113 of the main control module 11. The control unit 111 receives the signal transmitted by the touch screen signal unit 113, and transmits the signal to the optical machine backlight switch unit 115 and the touch screen backlight switch unit 116 respectively, so that the optical machine backlight or the touch screen backlight is turned off according to the corresponding demand. Since the switches of the optical machine backlight and the touch screen backlight are independently set, the user can choose to turn off two or one of them or both at the same time according to the actual use needs.

[0034] The optical machine driving unit 112 of the main control module 11 can control the projection of the projection optical machine 2, such as adjusting the image shape and position during projection, and can optimize the projected image through operations such as trapezoidal correction and screen rotation. The projected image can be adjusted according to the actual projection effect to achieve a better projection effect.

[0035] As an embodiment, the touch screen backlight unit 131 uses a chip signal of STI9287C, and the main control module 11 uses a chip model of SSD2386.

[0036] The projection optical machine module 12 includes a projection backlight brightness adjustment control unit 123, and the projection backlight brightness adjustment control unit 123 is connected to the main control module 11. Specifically, the projection backlight brightness adjustment control unit 111 adjusts the brightness of the projection optical machine backlight according to the electrical signal sent by the main control module 11, so that the brightness of the projection optical machine backlight is adjusted according to user needs. The projection backlight brightness adjustment control unit 123 uses a PWM signal to adjust the brightness of the backlight of the projection optical machine 2 through the duty cycle of the signal.

[0037] The projector control circuit 1 includes a power amplifier module 16 and an audio input module 19. The main control module is connected to the power amplifier module 16 and the audio input module 19 respectively. The power amplifier module 16 receives the audio data sent by the main control module 11. The power amplifier module 16 is connected to the built-in speaker of the projector 100. The speaker can play the audio data transmitted by the power amplifier module 16, so that the projector 100 plays the audio and matches the content displayed by the projection optical machine 2 and the touch screen 3. The audio input module 19 is connected to a microphone, and the user can sing using the microphone. The touch screen module 13 outputs a song list so that the user can select the corresponding song. At the same time, the projection optical machine module outputs the lyrics data of the song selected by the user, and the projection optical machine outputs the corresponding song lyrics.

[0038] As an embodiment, the chip model used by the power amplifier module 16 is ACM8625S.

[0039] The projector control circuit 1 includes a switching module 15, the switching module 15 uses a six-axis gyroscope, and the main control module 11 includes a switching unit, which is connected to the switching module 15. The switching module 15 detects the current placement posture of the projector 100 according to the six-axis gyroscope, and automatically adjusts different preset modes according to the prevention posture of the projector, such as only lighting up the touch screen 3 when the projector is placed upright, and lighting up the touch screen 3 and the projection optical machine 2 at the same time when the projector 100 is placed horizontally or tilted.

[0040] As an embodiment, the chip model used by the switching module 15 is LSM6DSDTR.

[0041] The projector control circuit 1 includes a power supply module 17, which is electrically connected to the main control module 11 and connected to an external power source. Specifically, the power supply module 17 not only supplies power to the main control module 11, but also supplies power to the projection optical module 12 and the touch screen module 13. The power supply module 17 includes a power supply switch 171, a standby power supply unit 172, a 3.3V power supply unit 173 and a 1.8V power supply unit 174. The standby power supply unit 172 converts the external input 12V power supply into 3.3V. The power supply switch 171 is connected to the 1.8V power supply unit 174 and the 3.3V power supply unit 173 respectively. The standby power supply unit 172 is connected to the 3.3V power supply unit 173, and the 3.3V power supply unit 173 is connected to the 1.8V power supply unit 174. The 1.8V power supply unit 174 is connected, and the standby power supply unit 172 can provide power when the device is on standby, so that some modules inside the device are in a low-power operating state. At the same time, the standby power supply unit 172 supplies power to some devices that need electricity when in standby mode, so that the mechanism can operate normally when the projector is in low power consumption, and the mechanism can respond quickly when switching from standby mode to power-on mode; the 3.3V power supply unit 173 and the 1.8V power supply unit 174 provide power when other mechanisms are operating normally, and the power switch 171 can switch between standby mode and normal mode so that the device can be used normally.

[0042] The projection optical machine module 12 includes a projection optical machine power supply unit 124, which is respectively connected to the 3.3V power supply unit 173 and the first connection interface 1421. The projection optical machine power supply unit 124 transforms the input power supply into power supply parameters suitable for the projection optical machine, and supplies power to the connected projection optical machine via the first connection interface 1421 so that it can operate normally. In addition, the projection optical machine power supply unit 124 is connected to the main control module 11, and the main control module 11 controls the operation of the projection optical machine power supply unit 124 through electrical signals.

[0043] In particular, the projection optical power supply unit 124 uses a boost converter chip. In this embodiment, the model of the boost converter chip used by the projection optical power supply unit 124 is STI3508CB.

[0044] The touch screen module 13 includes a touch screen power supply unit 134, which is connected to the 3.3V power supply unit 173 and the second connection interface 1431 respectively. The touch screen power supply unit 134 converts the power output by the 3.3V power supply unit 173 into the power supply parameters of the touch screen connected to the second connection interface 1431, so that the connected touch screen can operate normally.

[0045] In particular, the touch screen power supply unit 134 uses a voltage stabilizing chip. In this embodiment, the voltage stabilizing chip model of the touch screen power supply unit 134 is GD30LD2000NSTR-I18.

[0046] The projector control circuit 1 includes a wireless transmission module 18, which is connected to the main control module 11. The wireless transmission module 18 is used for wireless connection with external electronic devices and signal transmission. It can be connected to the user's mobile phone, tablet computer and other electronic devices. The wireless transmission module 18 can use Bluetooth or WiFi for wireless transmission, so that the projector can be wirelessly connected to other electronic devices and transmit wireless signals.

[0047] In this embodiment, the wireless transmission module 18 uses a chip signal of AIC8800D40.

[0048] Second, see Fig.21 The present invention discloses a projector 100, which includes the above-mentioned projector control circuit 1, a shell, a touch screen 3, and a projection optical machine 2; the projector control circuit 1 is connected to the touch screen 3 and the projection optical machine 2 respectively, the projector control circuit 1, the touch screen 3, and the projection optical machine 2 are arranged in the shell, and the light-emitting positions of the touch screen 3 and the projection optical machine 2 are arranged on two different surfaces of the shell.

[0049] Specifically, the projector 100 is provided with a projection light engine 2 and a touch screen 3. The light emitting positions of the projection light engine 2 and the touch screen 3 are set on different surfaces of the shell. The projection light engine 2 and the touch screen 3 display different contents. The touch screen 3 can be controlled by finger touch to generate a touch signal. The projection light engine 2 can be controlled by the touch signal of the touch screen 3. At the same time, the display content of the touch screen 3 can also be changed by the touch signal. In addition, the touch screen 3 can also generate a control signal for changing the projection content of the projection light engine 2, so that the projection light engine 2 is controlled by the touch screen 3, and the display content of the projection light engine 2 is changed by controlling the touch screen 3, so that the projector 100 can be separated from the remote control and is more convenient to use.

[0050] Since the contents displayed by the projection light machine 2 and the touch screen 3 are different, and the touch signal of the touch screen 3 can control the display content of the projection light machine 2 to change, the function of a song request machine can be realized, the touch screen 3 displays a song list, and the projection light machine 2 projects the lyrics of the song and the corresponding MV of the song, and the user can sing through the projector 100. In addition, the projector 100 can realize the function of a learning machine. By controlling the touch screen 3, the content projected by the projector 100 is changed, and the projection light machine 2 projects the learning content. During class, the teacher can directly control the interface on the touch screen 3, and the projection light machine 2 changes the display content according to the corresponding operation, making it more convenient for the teacher to teach in class. At the same time, children can avoid using small-size screens for a long time, which protects their eyesight.

[0051] As an embodiment, the projector 100 is provided with a TOF sensor, a camera, or a combination of the two, for adjusting the image of the projection to achieve a better projection effect.

[0052] Thirdly, see Fig. 22 The present invention discloses a projector asynchronous display method, which is applied to a projector and comprises the following steps: The touch screen displays the first display content, and the projection optical machine projects the second display content; The touch screen obtains the touch signal and transmits an electrical signal corresponding to the touch signal to the main control module; The main control module responds to the electrical signal and adjusts the first display content and the second display content according to the electrical signal to obtain the third display content and the fourth display content; The third display content is sent to the touch screen, and the touch screen changes to display the third display content. The fourth display content is sent to the projector, and the projector changes to display the fourth display content.

[0053] Specifically, the touch screen and the projector display different contents at the same time. The user touches the touch screen with his fingers, and the display content of the projector changes according to the interface displayed on the touch screen. The projector changes the display content accordingly. The touch screen and the projector display the changed content respectively. That is, the touch screen can control the content projected by the projector. At the same time, the touch screen can also change its own content. Changing the content displayed on the touch screen and the projector by touching the touch screen is more convenient than traditional remote control control. In addition, compared with mechanical buttons, touch control can generate virtual buttons at will, and can display the control content in response to the virtual buttons, making operation more convenient.

[0054] The following steps are also included: The trapezoidal correction module obtains image display features and uses a trapezoidal correction algorithm to adjust the picture of the second display content; the image display features include the boundary and shape of the picture, the projection distance, and the projection depth.

[0055] Specifically, when projecting an image, the projection optical machine adjusts the image by using a trapezoidal correction algorithm, rotating the image, etc. according to the shape, position and other characteristics of the actual image being projected, so as to achieve a better projection effect.

[0056] In particular, the trapezoidal correction module adopts either a TOF sensor or a camera or a combination of the two. The TOF sensor and the camera can be arranged on the housing and on the same surface as the projection optical machine.

[0057] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0064] The above is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A projector control circuit, characterized in that: include: A projection optical machine module, including a horizontal screen display unit; A touch screen module, comprising a touch screen control unit and a touch screen display unit, wherein the touch screen control unit is connected to the touch screen display unit, and the touch screen display unit and the horizontal screen display unit output different display contents; A connection module, comprising a control signal connection unit, a first display signal output unit and a second display signal output unit, wherein the first display signal output unit is connected to the horizontal screen display unit, the second display signal output unit is connected to the touch screen display unit, the control signal connection unit is connected to the touch screen control unit, the control signal connection unit is used to receive a touch signal from the touch screen control unit, and the display contents of the first display signal output unit and the second display signal output unit are different; The main control module includes a control unit, an optical-mechanical driving unit, a touch screen signal unit and a touch screen driving unit. The first display signal output unit is connected to the optical-mechanical driving unit, the second display signal output unit is connected to the touch screen driving unit, the control signal connection unit is connected to the touch screen signal unit, and the control unit is respectively connected to the optical-mechanical driving unit, the touch screen signal unit and the touch screen driving unit.

2. The projector control circuit according to claim 1, characterized in that: The first display signal output unit transmits a first display content to the horizontal screen display unit, and the second display signal output unit transmits a second display content to the touch screen display unit; The control signal connection unit transmits a control signal to the main control module, and the control unit changes the first display content and the second display content according to the instruction information corresponding to the control signal, and generates the third display content and the fourth display content accordingly.

3. The projector control circuit according to claim 1, characterized in that: The projection optical machine module includes a projection optical machine backlight unit, and the touch screen module includes a touch screen backlight unit; The main control module includes an optical machine backlight switch unit and a touch screen backlight switch unit. The optical machine backlight switch unit is connected to the projection optical machine backlight unit, and the touch screen backlight switch unit is connected to the touch screen backlight unit.

4. The projector control circuit according to claim 1, characterized in that: It comprises a power amplifier module and an audio input module, and the main control module is connected to the power amplifier module and the audio input module respectively.

5. The projector control circuit according to claim 1, characterized in that: It includes a switching module, wherein the switching module adopts a six-axis gyroscope; The main control module includes a switching unit, and the switching unit is connected to the switching module.

6. The projector control circuit according to claim 1, characterized in that: The projection optical machine module comprises a projection backlight brightness adjustment control unit, and the projection backlight brightness adjustment control unit is connected to the main control module.

7. The projector control circuit according to claim 1, characterized in that: It includes a power supply module, which is electrically connected to the main control module and connected to an external power source.

8. The projector control circuit according to claim 1, characterized in that: It includes a wireless transmission module, and the wireless transmission module is connected to the main control module.

9. A projector, characterized in that: The projector control circuit, housing, touch screen and projection optical machine of any one of claims 1 to 8 are included; The projector control circuit is connected to the touch screen and the projection light engine respectively, and the light emitting positions of the touch screen and the projection light engine are arranged on two different surfaces of the housing.

10. A projector asynchronous display method, applied to the projector according to claim 9, characterized in that: The following steps are involved: The touch screen displays the first display content, and the projection optical machine projects the second display content; The touch screen obtains the touch signal and transmits an electrical signal corresponding to the touch signal to the main control module; The main control module responds to the electrical signal and adjusts the first display content and the second display content according to the electrical signal to obtain the third display content and the fourth display content; The third display content is sent to the touch screen, and the touch screen changes to display the third display content. The fourth display content is sent to the projector, and the projector changes to display the fourth display content.

Images