Projection equipment

Abstract

The utility model discloses a projection device, including a processor, an image signal converter, a display screen component and an optical machine, wherein the display screen component includes a display screen and a control panel, wherein the control panel is connected to the display screen for controlling the display screen, wherein the output end of the control panel is connected to the input end of the processor, wherein the input end of the image signal converter is connected to the output end of the processor, and the output end of the image signal converter is respectively connected to the input end of the optical machine and the input end of the display screen. The projection device proposed by the utility model improves interactivity and control convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a projection equipment. Background Art

[0002] Traditional projectors can only project images through optical machines and projection lenses for users to watch and interact with. When users need to switch the screen content, they need to control the projected screen content to return to the main interface and reselect the playback content; or call up the menu on the projected screen to select the required function. The interactivity and convenience are poor. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a projection device, which improves interactivity and control convenience.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a projection device, comprising a processor, an image signal converter, a display screen component and an optical machine, wherein the display screen component comprises a display screen and a control panel, wherein the control panel is connected to the display screen for controlling the display screen, wherein the output end of the control panel is connected to the input end of the processor, the input end of the image signal converter is connected to the output end of the processor, and the output end of the image signal converter is respectively connected to the input end of the optical machine and the input end of the display screen.

[0006] Preferably, the display screen assembly is a touch display screen, and the control panel is a touch panel superimposed on the display screen.

[0007] Preferably, the projection device further comprises an auxiliary controller connected between an output terminal of the control panel and an input terminal of the processor.

[0008] Preferably, the output end of the auxiliary controller is also connected to the input end of the image signal converter.

[0009] Preferably, the projection device further comprises an angle sensor, and an output end of the angle sensor is connected to an input end of the auxiliary controller.

[0010] Preferably, the output end of the processor includes a first LVDS output interface, the input end of the image signal converter includes a first LVDS input interface, and the first LVDS output interface is connected to the first LVDS input interface.

[0011] Preferably, the output end of the image signal converter includes a MIPI output interface and a second LVDS output interface, the input end of the display screen includes a MIPI input interface, the input end of the optical machine includes a second LVDS input interface, the MIPI output interface is connected to the MIPI input interface, and the second LVDS output interface is connected to the second LVDS input interface.

[0012] Preferably, the image signal converter is used to receive a control signal from the processor, and can switch the image output to the optical machine or the display screen based on the control signal.

[0013] Preferably, the optical machine comprises an FPGA module, a DLP module and a DMD module which are connected in sequence, and the output end of the image signal converter is connected to the FPGA module.

[0014] Compared with the prior art, the beneficial effect of the utility model is that: the projection device disclosed by the utility model, wherein the control panel corresponding to the display screen is connected to the input end of the processor, and the output end of the processor is connected to the image signal converter, and the output end of the image signal converter is respectively connected to the optical machine and the display screen, so that the image signal converter can receive the control signal of the processor, and further switch the screen output to the optical machine or the display screen based on the control signal. When it is necessary to switch the projection screen on or off, or change the display content of the projection screen, the user can first select the content or function on the control panel corresponding to the display screen on the projection device body, and then the processor loads the selected content or function to the projection screen and displays it through the optical machine projection, thereby improving interactivity and control convenience.

[0015] In a further embodiment, the present invention also has the following beneficial effects:

[0016] (1) The processor may also be connected to at least one of an angle sensor, a depth detection module, a USB module, and a camera module to further process a control signal based on a signal from at least one of the angle sensor, the depth detection module, the USB module, and the camera module, so that the control signal is further sent from the processor to an image signal converter and may be selectively sent to a display screen or an optical machine.

[0017] (2) An auxiliary controller is also provided between the output end of the control panel and the input end of the processor, so that the auxiliary controller can identify the signal of the control panel and directly generate corresponding instructions, and send them to the image signal converter through the processor to switch to the corresponding output channel, which can reduce the computing burden of the processor and speed up the switching speed of the display mode.

[0018] (3) Furthermore, the output ends of at least one of the depth detection module, the USB module, the camera module and the angle sensor can be connected to an auxiliary controller, which first processes relevant signals and generates corresponding instructions, thereby further reducing the computing burden of the processor and helping to speed up the switching of display modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the circuit structure of the projection device of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of a display screen of a projection device using a first embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the circuit structure of the projection device of the second embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the circuit structure of the projection device of the third embodiment of the utility model. DETAILED DESCRIPTION

[0023] The following is a detailed description of the implementation of the utility model. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit / signal communication.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] Embodiment 1

[0028] like Figure 1 As shown, the first embodiment of the utility model discloses a projection device, including a processor 10, an image signal converter 20, a display screen assembly 30 and an optical machine 40, wherein the display screen assembly 30 includes a display screen 31 and a control panel 32, wherein the control panel 32 is connected to the display screen 31 for controlling the display screen 31, wherein the output end of the control panel 32 is connected to the input end of the processor 10, wherein the input end of the image signal converter 20 is connected to the output end of the processor 10 for receiving a control signal of the processor 10, and wherein the output end of the image signal converter 20 is respectively connected to the input end of the optical machine 40 and the input end of the display screen 31 so as to be able to switch the screen output to the optical machine 40 or the display screen 31 based on the control signal. In this embodiment, the image signal of the projection device is sent from the processor 10 to the image signal converter 20 so as to be further selectively sent to the display screen 31 or the optical machine 40, wherein the image signal output channel of the image signal converter 20 is edited according to the control signal received from the processor 10 so as to be able to control the display of the screen display screen or the display of the projection screen.

[0029] In this embodiment, the display screen assembly 30 adopts a touch screen display screen, that is, the body of the projection device is provided with a touch screen display screen and an optical machine 40 at the same time, and the touch screen display screen includes a stacked display screen 31 and a touch panel. The display screen 31 is small in size, and the screen on the display screen 31 can be used to display simple information such as application patterns, video / image options, time, weather, etc. The optical machine 40 is used to generate a light source and modulate the projection screen light, and modulate and enlarge the projection screen through a projection lens to project it onto the screen. The size of the projection screen is large and can be used to display the content that users usually watch, such as movies and TV series. For most processors, a processor chip can only process one type of picture signal at the same time, that is, one of the display screen picture and the projection screen picture. Based on this, the present application is directed to the time-sharing display of the projection screen picture or the display screen picture, in which only one pin of the chip of the processor 10 is occupied as the output end of the image signal, and the output end is connected to the display screen 31 and the optical machine 40 respectively through the image signal converter 20, wherein the image signal converter 20 can use a conversion chip, and the conversion chip can be edited to select the output type of the image signal, so as to adapt to the image signal type of different display modules (display screen 31 or optical machine 40).

[0030] The chip of the processor 10 is used to process and generate the image signals of the display screen 31 and the projection image of the optical machine 40. The projection image signal includes the control signal for driving the optical machine light source, color wheel, DMD chip (Digital Micromirror Device); the display image signal includes the control signal corresponding to the LED, O-LED, LCD and other display screens. The CPU of the processor 10 can adopt a quad-core Cortex-A73 architecture. After receiving the signal to generate a certain type of image signal, the processor 10 sends the image signal to the image signal converter 20 and transmits it to the selected display screen 31 or optical machine 40. The optical machine in the projection device includes components such as image driver chip, light source, and heat sink. The optical machine is the core component of the projection device, and the projection image is generated by the optical machine.

[0031] The optical machine 40 includes an FPGA module 41, a DLP module 42 and a DMD module 43 connected in sequence, and the output end of the image signal converter 20 is connected to the FPGA module 41. The FPGA module 41 has a highly parallel processing capability and can perform a large number of logical operations at the same time, such as image preprocessing, feature extraction and image recognition. The FPGA module works in conjunction with other modules such as CPU, GPU, sensor, etc. to achieve efficient image processing.

[0032] The control chip DLPC in the DLP module 42 is used for tasks such as coordination of the overall timing of the projection and conversion of display data. The main task of the DLPC is to control the chip of the DMD module 43. The DLPC is connected to the chip of the DMD module 43 through a driving circuit to rotate millions of tiny mirrors on the DMD module 43. When the DLPC receives image data (projection image signal), it converts these data into corresponding control signals to control the rotation direction of each mirror on the DMD module 43 to coordinate the generation of the desired projection image.

[0033] Specifically, the input end of the image signal converter 20 is connected to the processor 10, and the output end is respectively connected to the display screen 31 and the optical machine 40. The image signal converter 20 can be edited by the processor 10 to select the output channel of the signal. When the image signal converter 20 is edited to transmit the image signal only to the optical machine 40, and then the image signal converter 20 receives the projection picture signal from the processor 10, the projection picture signal can be transmitted to the chip of the FPGA module 41 of the optical machine 40, and after being modulated by the FPGA module 41, it is transmitted to the DLP module 42 and the DMD module 43 to form a projection picture. At this time, the optical machine 20 is on, and the display screen 31 is not on.

[0034] The image signal converter 20 in this embodiment can realize the input of HDMI, LVDS and digital video signals, and the output end can drive the output of interfaces such as MIPI (Mobile Industry Processor Interface), LVDS (Low-Voltage Differential Signaling), and Min-LVDS.

[0035] In one embodiment, the output end of the processor 10 includes a first LVDS output interface, the input end of the image signal converter 20 includes a first LVDS input interface, and the first LVDS output interface is connected to the first LVDS input interface, so that the image signal is transmitted between the processor 10 and the image signal converter 20 through the LVDS signal.

[0036] In addition, in one embodiment, the output end of the image signal converter 20 includes a MIPI output interface and a second LVDS output interface, the input end of the display screen 31 includes a MIPI input interface, the input end of the optical engine 40 includes a second LVDS input interface, the MIPI output interface is connected to the MIPI input interface, and the second LVDS output interface is connected to the second LVDS input interface. This structure enables the image signal converter 20 to transmit image signals to the FPGA module 41 of the optical engine 40 via LVDS signals.

[0037] In this embodiment, the display screen assembly 30 adopts a touch display screen, that is, the control panel 32 adopts a touch panel arranged overlapping with the display screen 31, and the touch panel is connected to the processor 10 to transmit the touch signal to the processor 10, thereby realizing interactive control of the picture. Among them, the output signal of the touch panel can control the output channel of the image signal converter 20. In other embodiments, the control panel 32 can also be a non-touch panel, such as a keypad or other control method. In this case, the output signal of the control panel 32 can also be input into the processor 10 to control the output channel of the image signal converter 20.

[0038] In a specific embodiment, the projection device initially displays only on the display screen 31 without performing projection. At this time, the processor 10 only processes and outputs the image signal of the display screen 31, and the output channel of the image signal converter 20 is also adjusted to the display screen 31. Figure 2As shown, a display screen 200 on a display screen 31 includes a plurality of program patterns 201, each of which corresponds to an application. When a user clicks a program pattern 201 (e.g., a video playback platform, a music playback platform, news, etc.) on the touch screen and determines to project the subsequent screen of the application, the touch panel transmits the trigger signal of the application and the "signal for determining projection" to the processor 10. The processor 10 starts to load the content of the application to generate a screen signal corresponding to the program, and at the same time transmits the "signal for determining projection" to the image signal converter 20. After receiving the signal, the image signal converter 20 switches its output channel to the optical machine 40. The content of the projection screen projected by the optical machine 40 can be the startup interface of the application and the subsequent interactive interface, etc.

[0039] When it is necessary to select and switch to other applications, the user can manipulate the touch screen that has been turned off, such as sliding the touch panel with a finger according to a specific gesture. The touch signal is transmitted to the processor 10 and recognized, thereby instructing the processor 10 to load and generate a display screen signal and transmit it to the image signal converter 20, and stop outputting the projection screen signal; at the same time, the processor 10 sends a "signal to determine the display screen display" to the image signal converter 20, and the image signal converter 20 switches the output channel to the display screen 31 according to the signal instruction, so that the display screen signal can be sent to the display screen 31 for display, and the projection screen is turned off. At this time, the display screen can be turned on again. Figure 2 The display screen 200 shown displays multiple program icons 201 for the user to reselect an application.

[0040] In addition, the projection device may further include an angle sensor 50, a depth detection module 60, a USB module 70, and a camera module 80, wherein the output ends of the angle sensor 50, the depth detection module 60, the USB module 70, and the camera module 80 are respectively connected to the input end of the processor 10. Therefore, the projection device in this embodiment can also switch the display mode according to the elevation angle of the projection device measured by the angle sensor 50 and the information obtained by the depth detection module 60, the USB module 70, and the camera module 80. For example, when the angle signal of the angle sensor 50 received by the processor 10 is 0 to 30°, the processor 10 loads the projection screen and sends an instruction to instruct the image signal converter 20 to transmit the signal to the optical machine 40. When the angle signal received by the processor 10 is 30 to 90°, the processor 10 loads the display screen of the display screen 31 and sends an instruction to instruct the image signal converter 20 to transmit the signal to the display screen 31.

[0041] Embodiment 2

[0042] For the presence of complex preset touch gesture judgment methods, the gesture recognition judgment of the touch panel will occupy part of the memory of the processor 10, resulting in the processor 10 being unable to respond to the touch signal sent by the touch panel in time when processing a program that occupies a large amount of memory. Based on this, this embodiment is based on the structure of the first embodiment, and an auxiliary controller 60 is further provided. The auxiliary controller 60 can use an MCU (Microcontroller Unit) to identify the gesture signal output by the touch panel, and send the result instruction of the identified gesture signal to the processor 10 to instruct the processor 10 to load the corresponding screen signal, and send the instruction to the image signal converter 20 to switch to the corresponding output channel. This can reduce the computing burden of the processor and speed up the switching speed of the display mode. In this embodiment, the auxiliary controller 60 is connected between the output end of the control panel 32 and the input end of the processor 10, and the output end of the auxiliary controller 60 is also connected to the input end of the image signal converter 20.

[0043] For example, in a specific embodiment, when the processor 10 is running a program with high memory usage, only the optical machine 40 projects the projection image, and the display screen 31 is turned off. At this time, the user wants to return to the display mode of the display screen 31 to select an application. The user needs to operate the corresponding gesture on the touch panel (such as five fingers pinching, two fingers sliding, etc.). After the gesture signal is sent to the auxiliary controller 60, it is recognized as an instruction to switch the display mode (from the projection mode to the display screen display mode), and the instruction is sent to the processor 10. The processor 10 stops processing the projection image according to the instruction and instead loads the main interface displayed on the display screen 31, for example Figure 2 interface, and sends the picture to the image signal converter 20. At the same time, the image signal converter 20 switches the output channel to the display screen 31 according to the instruction displayed on the display screen 31 received from the auxiliary controller 60, and then the display picture signal from the processor 10 is transmitted to the display screen 31 by the image signal converter 20 for display.

[0044] Embodiment 3

[0045] In this embodiment, based on the structure of the second embodiment, the output end of the angle sensor 50 included in the projection device is connected to the input end of the auxiliary controller 60 .

[0046] In this embodiment, when the processor 10 recognizes that the elevation angle of the projection device has changed, the output signal of the angle sensor 50 can be first passed through the auxiliary controller 60, and comprehensively judged with the gesture signal from the touch panel, and the display mode can be further switched accordingly; by passing the output signal of the angle sensor 50 through the auxiliary controller 60 for calculation, the calculation pressure of the processor 10 can be further reduced.

[0047] For example, when it is recognized that the projection device is approximately facing horizontally, such as the elevation angle measured by the angle sensor 50 is 0 to 30°, the processor 10 should originally output a projection image signal, but the user did not select to switch to the projection mode on the touch panel of the display screen 31. Therefore, the auxiliary controller 60 may not output an instruction to switch the display mode to the processor 10 based on this.

[0048] Another situation is that when the user selects an application on the touch panel of the display screen 31 and uses a touch command to project its content; but at this time, when the elevation angle value output by the angle sensor 50 to the auxiliary controller 60 is greater than 30°, the image signal converter 20 does not change the output channel. At this time, the processor 10 can output a preset loading screen to the display screen 31 through the image signal converter 20 for the display screen 31 to display, and the processor 10 loads the application. Until the elevation angle value sent by the angle sensor 50 to the auxiliary controller 60 is less than 30°, the auxiliary controller 60 sends a switching instruction to the image signal converter 20 to instruct it to switch the output channel to the optical machine 40; at the same time, the processor 10 is instructed to output to the image signal converter 20 the projection screen information that is being loaded or loaded successfully.

[0049] Furthermore, the output end of the USB module 70 can be connected to the input end of the auxiliary controller 60. When the user inserts a USB data cable or a USB flash drive into the projection device, the USB module 70 can send a USB display instruction to the auxiliary controller 60 to control the image signal converter 20 to switch to a preset output channel (such as the optical machine 40 or the display screen 31); at the same time, it instructs the processor 10 to output the picture signal under the USB mode, such as the folder picture in the USB.

[0050] Furthermore, the depth detection module 60 (such as a TOF detector) on the projection device can also be connected to the auxiliary controller 60. The depth detection module 60 is generally set at the front end of the projection device. When the front end of the projection device faces the bracket base or the desktop, the distance measured by the depth detection module 60 will be a smaller value, such as less than 0.2m. At this time, it is considered that there is no need to project, and only the display screen 31 needs to be displayed. Therefore, when the depth value of the depth detection module 60 received by the auxiliary controller 60 is less than the preset value, it instructs the processor 10 to load the display interface of the display screen 31 (as shown above). Figure 2), and at the same time, the auxiliary controller 60 sends an instruction to the image signal converter 20 to switch to sending a display screen signal to the display screen 31. On the contrary, when the depth value of the depth detection module 60 received by the auxiliary controller 60 is greater than the preset value, it is considered that the front face of the projection device is facing forward, and the auxiliary controller 60 sends an instruction to instruct the processor 10 to load the application, default program, or main interface of the projection system recently selected by the user on the touch panel of the display screen 31 and output the corresponding projection screen signal to the image signal converter 20. At the same time, the auxiliary controller 60 instructs the image signal converter 20 to switch the output channel to the optical machine 40.

[0051] Furthermore, the camera module 80 can also be connected to the auxiliary controller 60. The auxiliary controller 60 instructs the image signal converter 20 to switch to the corresponding output channel according to the trigger conditions in the shooting picture (such as recognizing a specific gesture). At the same time, the auxiliary controller 60 outputs a signal to the processor 10 to load the corresponding type of picture.

[0052] In this embodiment, an independent auxiliary controller 60 is set up to cooperate with the touch panel, angle sensor 50, USB module 70, etc. to adjust the output channel of the image signal converter 20. The auxiliary controller 60 can control the output channel of the image signal converter 20 according to the preset switching conditions and priority order. At the same time, the auxiliary controller 60 can instruct the processor 10 to output the type of screen to be loaded according to the priority order of the access module. The judgment of the screen display logic is separated from the processor 10, which reduces the computing burden on the processor 10 and helps to speed up the switching of the display mode.

[0053] The background section of the utility model may contain background information about the problem or environment of the utility model, rather than describing the prior art by others. Therefore, the content contained in the background technology section is not an admission of the applicant to the prior art.

[0054] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of mutual contradiction, the technical personnel in this field can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope defined by the appended claims.

Claims

1. A projection device, characterized in that: It includes a processor, an image signal converter, a display screen assembly and an optical machine. The display screen assembly includes a display screen and a control panel. The control panel is connected to the display screen for controlling the display screen. The output end of the control panel is connected to the input end of the processor. The input end of the image signal converter is connected to the output end of the processor. The output end of the image signal converter is respectively connected to the input end of the optical machine and the input end of the display screen.

2. The projection device according to claim 1, characterized in that: The control panel is a touch panel superimposed on the display screen.

3. The projection device according to claim 1, characterized in that: An auxiliary controller is also included, and the auxiliary controller is connected between the output terminal of the control panel and the input terminal of the processor.

4. The projection device according to claim 3, characterized in that: The output end of the auxiliary controller is also connected to the input end of the image signal converter.

5. The projection device according to claim 3 or 4, characterized in that: It also includes an angle sensor, the output end of which is connected to the input end of the auxiliary controller.

6. The projection device according to claim 3 or 4, characterized in that: It also includes at least one of a depth detection module, a USB module, and a camera module, wherein the output end of at least one of the depth detection module, the USB module, and the camera module is connected to the input end of the auxiliary controller.

7. The projection device according to claim 1, characterized in that: The output end of the processor includes a first LVDS output interface, the input end of the image signal converter includes a first LVDS input interface, and the first LVDS output interface is connected to the first LVDS input interface.

8. The projection device according to claim 1, characterized in that: The output end of the image signal converter includes a MIPI output interface and a second LVDS output interface, the input end of the display screen includes a MIPI input interface, the input end of the optical machine includes a second LVDS input interface, the MIPI output interface is connected to the MIPI input interface, and the second LVDS output interface is connected to the second LVDS input interface.

9. The projection device according to claim 1, characterized in that: The image signal converter is used to receive a control signal from the processor and can switch the image output to the optical machine or the display screen based on the control signal.

10. The projection device according to claim 1, characterized in that: The optical machine includes an FPGA module, a DLP module and a DMD module which are connected in sequence, and the output end of the image signal converter is connected to the FPGA module.

Images