WO2017041425A1 - 投影幕布、触控屏投影显示方法及系统 - Google Patents

投影幕布、触控屏投影显示方法及系统 Download PDF

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Publication number
WO2017041425A1
WO2017041425A1 PCT/CN2016/073059 CN2016073059W WO2017041425A1 WO 2017041425 A1 WO2017041425 A1 WO 2017041425A1 CN 2016073059 W CN2016073059 W CN 2016073059W WO 2017041425 A1 WO2017041425 A1 WO 2017041425A1
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WO
WIPO (PCT)
Prior art keywords
touch
information
area
image information
processing module
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PCT/CN2016/073059
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English (en)
French (fr)
Inventor
詹一飞
张大宇
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/306,918 priority Critical patent/US10048809B2/en
Publication of WO2017041425A1 publication Critical patent/WO2017041425A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection

Definitions

  • Embodiments of the present invention relate to the field of display technologies, and in particular, to a projection screen, a touch screen projection display method, and a system.
  • the projection display system is a system that can project images or videos onto a projection screen. It can be connected to a computer or audio-visual disc through different interfaces (English: Video Compact Disc; VCD), Digital Versatile Disc (English: Digital Versatile Disc) Abbreviation: DVD), Blu-ray Disc (English: Blu-ray Disc, BD for short), game console, digital video (English: Digital Video; abbreviation: DV) and other connected to play the corresponding video signal.
  • VCD Video Compact Disc
  • DVD Digital Versatile Disc
  • Blu-ray Disc English: Blu-ray Disc, BD for short
  • game console digital video
  • digital video English: Digital Video; abbreviation: DV
  • the rear projection screen includes a projection screen and a light sensing component disposed on the projection screen, the light sensing component detects the brightness of the projection screen to generate a corresponding sensing signal; the infrared touch frame senses the touch motion to generate a corresponding electrical signal;
  • the group projects a plurality of images to the projection screen and makes the edges of the adjacent images coincide;
  • the control device acquires the overlapping regions of the images on the projection screen according to the sensing signals, and controls the brightness of each point of the projection screen by the projector group according to the overlapping regions.
  • the homogenization process combines a plurality of images into a seamless overall image, and simultaneously acquires touch coordinates corresponding to the position of the electrical signal according to the electrical signal, and then controls the projector group to perform screen switching according to the touch coordinates.
  • the touch screen projection display system adopts an infrared touch method, and the infrared touch has a small number of touch points.
  • the problem is that the number of touch points is generally not more than 10 points, and the touch sensing accuracy is low, so the touch effect is poor.
  • the present invention provides a projection screen, a touch screen projection display method and system.
  • the technical solution is as follows:
  • a projection screen is provided, and the projection screen is provided with a capacitive touch film layer.
  • the projection screen is configured to receive a touch operation through the capacitive touch film layer, and send the touch position information generated by the touch operation to the processing module.
  • an edge of the touch area of the projection screen is provided with a light emitting unit capable of generating an optical signal, and the touch area is configured to receive the touch operation.
  • the light emitting unit is a light emitting diode LED.
  • a touch screen projection display system in a second aspect, includes: a projection screen, a processing module, and a projector.
  • the projection screen is provided with a capacitive touch film layer, and the projection screen is connected to the processing module, and the projection screen is configured to receive a touch operation through the capacitive touch film layer, and the touch screen is used by the touch screen
  • the touch position information generated by the operation is sent to the processing module;
  • the processing module is connected to the projector, and the processing module is configured to determine target image information according to the touch location information;
  • the projector is configured to receive target image information sent by the processing module, process the target image information, and project the processed target image information to the projection screen.
  • the edge of the touch area of the projection screen is provided with a light emitting unit, and the projection screen is configured to receive the touch operation through the touch area, and the touch position generated by the touch operation Information is sent to the processing module, which is also used to:
  • the first area information is boundary information of the touch area
  • the second area information is boundary information of the display area
  • the projector comprises a video input unit, a micro control unit MCU and a developing unit, and the MCU is respectively connected to the video input unit, the developing unit and the processing module.
  • the video input unit is used to:
  • the MCU is used to:
  • the developing unit is used to:
  • the processed target image information is projected onto the projection screen.
  • the video input unit is a camera.
  • the target image information is an image or video pre-stored in the processing module.
  • a touch screen projection display method includes:
  • the projection screen receives the touch operation through the capacitive touch film layer
  • the projection screen sends the touch position information generated by the touch operation to the processing module
  • the processing module determines target image information according to the touch location information
  • the projector processes the target image information
  • the projector projects the processed target image information to the projection screen.
  • the edge of the touch area of the projection screen is provided with a light emitting unit, and before the processing module determines the target image information according to the touch position information, the method further includes:
  • the projector determines a boundary of the touch area according to an optical signal generated by the light emitting unit, and the projection screen is configured to receive the touch operation through the touch area, and generate the touch operation by the touch operation.
  • Touch location information is sent to the processing module;
  • the projector determines a boundary of the display area according to the brightness of the image information currently displayed by the projection screen, and the display area is used to display the processed target image information;
  • the projector sends the first area information and the second area information to the processing module, so that the processing module determines the location according to the first area information, the second area information, and the touch location information.
  • Target Image information the first area information is boundary information of the touch area
  • the second area information is boundary information of the display area.
  • the projector comprises a video input unit, a micro control unit MCU and a developing unit.
  • Determining, by the projector, a boundary of the touch area according to an optical signal generated by the light emitting unit including:
  • the video input unit collects the optical signal
  • the video input unit determines a boundary of the touch area according to the optical signal
  • Determining, by the projector, a boundary of the display area according to brightness of the image information currently displayed by the projection screen including:
  • the video input unit collects brightness of image information currently displayed by the projection screen
  • the video input unit determines a boundary of the display area according to brightness of image information currently displayed by the projection screen;
  • the projector sends the first area information and the second area information to the processing module, including:
  • the video input unit uses boundary information of the touch area as the first area information
  • the video input unit uses boundary information of the display area as the second area information
  • the video input unit sends the first area information and the second area information to the MCU;
  • the projector includes:
  • the projector processes the target image information, including:
  • the MCU processes the target image information to obtain information that the imaging unit can receive;
  • the projector projects the processed target image information to the projection screen, including:
  • the developing unit projects the processed target image information to the projection screen.
  • the light emitting unit is a light emitting diode LED.
  • the video input unit is a camera.
  • the target image information is an image or video pre-stored in the processing module.
  • the invention provides a projection screen, a touch screen projection display method and a system.
  • the projection screen of the touch screen projection display system first receives a touch operation through a capacitive touch film layer, and then the touch generated by the touch operation
  • the location information is sent to the processing module, and the processing module determines the target image information according to the touch location information, and the projector then receives the target image information sent by the processing module, and projects the processed target image information to the projection screen, compared to the prior art.
  • the infrared touch method is not required, so the touch effect is improved.
  • FIG. 1 is a schematic structural view of a projection screen according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a touch area of a projection screen according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a touch screen projection display system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a touch area and a display area according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a projector according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a touch screen projection display method according to an embodiment of the present invention.
  • FIG. 7-1 is a flowchart of another touch screen projection display method according to an embodiment of the present invention.
  • 7-2 is a flowchart of determining a boundary of a touch area according to an embodiment of the present invention.
  • 7-3 is a flowchart of determining a boundary of a display area according to an embodiment of the present invention.
  • FIG. 7-4 is a flowchart of sending area information to a processing module according to an embodiment of the present invention.
  • FIG. 7-5 are schematic diagrams showing display of target image information according to an embodiment of the present invention.
  • the embodiment of the present invention provides a projection screen.
  • the projection screen 01 is provided with a capacitive touch film layer 011 for receiving a touch operation through the capacitive touch film layer 011.
  • the touch position information generated by the touch operation is sent to the processing module 02.
  • the edge of the touch area 012 of the projection screen 01 is provided with a light emitting unit 013 capable of generating an optical signal, and the touch area 012 is configured to receive a touch operation.
  • the light emitting unit 013 is a light emitting diode (English: Light Emitting Diode; abbreviated as: LED).
  • the projection screen provided by the embodiment of the invention can receive the touch operation through the capacitive touch film layer.
  • the touch position information generated by the touch operation is sent to the processing module.
  • the infrared touch method is not needed, thereby improving the touch effect.
  • the embodiment of the present invention provides a touch screen projection display system.
  • the touch screen projection display system may include: a projection screen 01, a processing module 02, and a projector 03.
  • the projection screen 01 is as shown in FIG. The projection screen shown.
  • the projection screen 01 is provided with a capacitive touch film layer, and the projection screen 01 is connected to the processing module 02.
  • the projection screen 01 is used for receiving a touch operation through the capacitive touch film layer, and the touch position generated by the touch operation is performed.
  • the information is sent to the processing module 02.
  • the processing module 02 is connected to the projector 03, and the processing module 02 is configured to determine target image information according to the touch position information.
  • the capacitive touch film layer works by the current sensing of the human body.
  • the finger or the stylus due to the human body electric field, the finger or the stylus and the capacitive touch
  • the control layer forms a coupling capacitor. Since the capacitive touch film layer is connected with a high frequency signal, a certain amount of charge is transferred to the finger or the stylus, and in order to restore the loss of these charges, the charge will be Replenished from the four corners of the capacitive touch film layer, the amount of charge added is proportional to the distance from the contact point to the four corners. Therefore, the position of the contact point can be calculated, and the position information of the contact point is Touch location information.
  • the projector 03 is configured to receive target image information transmitted by the processing module 02, process the target image information, and project the processed target image information onto the projection screen 01.
  • the touch screen projection display system provided by the embodiment of the present invention
  • the projection screen of the touch screen projection display system can receive the touch operation through the capacitive touch film layer, and the touch generated by the touch operation
  • the location information is sent to the processing module, and the processing module can determine the target image information according to the touch location information, and the projector can receive the target image information sent by the processing module, and project the processed target image information to the projection screen, compared to the existing
  • the technology does not require an infrared touch method, thus improving the touch effect.
  • the edge of the touch area 012 of the projection screen 01 is provided with a light emitting unit 013.
  • the projection screen 01 is configured to receive a touch operation through the touch area 012, and send the touch position information generated by the touch operation to the processing module.
  • the projector 03 is further configured to: determine a boundary of the touch area according to the light signal generated by the light emitting unit. Since the light emitting unit is disposed at an edge position of the touch area of the projection screen, the boundary of the touch area can be determined according to the light signal generated by the light emitting unit; and the boundary of the display area is determined according to the brightness of the image information currently displayed by the projection screen, the display area
  • the first image information and the second area information are sent to the processing module, so that the processing module determines the target image information according to the first area information, the second area information, and the touch position information, first The area information is boundary information of the touch area, and the second area information is boundary information of the display area.
  • FIG. 4 is a schematic structural diagram of the touch area 012 and the display area 014.
  • the area of the touch area 012 when the area of the touch area is equal to the area of the display area, when the edge of the target image displayed on the display area is touched The touch area of the corresponding position may not be accurately received by the touch area. Therefore, in order to enable the touch area to accurately receive the touch operation, the area of the touch area 012 needs to be larger than the area of the display area 014.
  • 015 in FIG. 4 is the position corresponding to the touch operation, and 016 is the folder 1. It should be noted that the content of the display area in FIG. 4 is the partial content actually displayed, and other contents such as the path indication part are not shown.
  • the projector 03 may include a video input unit 031, a micro control unit (English: Microcontroller Unit; MCU) 032, and a developing unit 033.
  • MCU Microcontroller Unit
  • Unit 033 is coupled to processing module 02.
  • the video input unit is configured to: collect an optical signal; determine a boundary of the touch area according to the optical signal, and acquire a boundary of the touch area; use boundary information of the touch area as the first area information; and collect the current display of the projection screen 01.
  • the brightness of the image information determining the boundary of the display area according to the brightness of the image information currently displayed by the projection screen 01, and acquiring the boundary of the display area; using the boundary information of the display area as the second area information; and the first area information and the second area
  • the information is sent to the MCU 032 so that the MCU 032 sends the first area information and the second area information to the processing module 02.
  • the video input unit 031 feeds back the boundary information of the touch area and the boundary information of the display area to the MCU 032, and the MCU 032 sends the boundary information of the touch area and the boundary information of the display area to the processing module 02.
  • the video input unit is independent of a High Definition Multimedia Interface (HDMI) or a Video Graphics Array (VGA) in the projection display system, and the video input unit is used for determining Touch area and display area Boundary, as an example, the video input unit can be a camera.
  • HDMI High Definition Multimedia Interface
  • VGA Video Graphics Array
  • MCU 032 is used to:
  • the MCU 032 sends the first area information and the second area information to the processing module 02, and the processing module 02 can according to the boundary information of the touch area, that is, the first area information, the boundary information of the display area, that is, the second area information and the touch position.
  • the information calculates and determines the target image information. Specifically, the touch location may be determined to be in the display area. If the touch location is not in the display area, the target image information calculated by the processing module is empty; if the touch location is in the display area, the processing module is configured according to the storage.
  • Corresponding relationship between the touch position and the image information determines the image information corresponding to the touch position generated by the touch operation, that is, the target image information.
  • the correspondence between the touch position and the image information may be obtained according to the boundary information of the touch area and the boundary information of the display area. The obtaining process may refer to the prior art.
  • Table 1 shows a relationship table of image information corresponding to three touch positions and three touch positions on the touch area.
  • the projection screen sends the position A to the processing module, and the processing module acquires the image information corresponding to the position A as the image information A1 by querying the table 1.
  • the processing module takes the image information A1 as the target image information.
  • the processed target image information can be received by the developing unit.
  • the MCU is widely used in projection display systems.
  • the MCU can be used to process images, data, sounds, etc., to determine the format, quality, and display mode of the image.
  • the processed target image information is transmitted to the developing unit 033.
  • the target image information may be an image or video pre-stored in the processing module 02.
  • the developing unit 033 is configured to project the target image information processed by the MCU 032 to the projection screen 01.
  • the developing unit 033 projects the target image information processed by the MCU 032 to the projection screen 01 to complete the imaging process.
  • the touch screen projection display system in the embodiment of the present invention only needs to add a capacitive touch film layer on the existing projection screen, and adds a video input unit to the existing projector, so the cost Lower, at the same time, the touch screen projection display system uses the projector to achieve touch, forming a capacitive touch system for the projector, and the touch technology is more easily promoted to the large size screen, therefore, the practicality of the touch screen projection display system Stronger.
  • the touch screen projection display system provided by the embodiment of the present invention
  • the projection screen of the touch screen projection display system can receive the touch operation through the capacitive touch film layer, and the touch generated by the touch operation
  • the location information is sent to the processing module, and the processing module can determine the target image information according to the touch location information, and the projector can receive the target image information sent by the processing module, and project the processed target image information to the projection screen, compared to the existing
  • the technology does not require an infrared touch method, thus improving the touch effect.
  • the embodiment of the invention provides a touch screen projection display method. As shown in FIG. 6, the method may include:
  • Step 601 The projection screen receives the touch operation through the capacitive touch film layer.
  • Step 602 The projection screen sends the touch position information generated by the touch operation to the processing module.
  • Step 603 The processing module determines the target image information according to the touch location information.
  • Step 604 The projector receives target image information sent by the processing module.
  • Step 605 The projector processes the target image information.
  • Step 606 The projector projects the processed target image information to the projection screen.
  • the projection screen can receive the touch operation through the capacitive touch film layer, and send the touch position information generated by the touch operation to the processing module for processing.
  • the module can determine the target image information according to the touch position information, and the projector can receive the target image information sent by the processing module, and project the processed target image information to the projection screen.
  • the infrared touch method is not needed. , thus improving the touch effect.
  • the edge of the touch area of the projection screen is provided with a light emitting unit.
  • the method may further include:
  • the projector determines a boundary of the touch area according to the light signal generated by the light emitting unit, and the projection screen is configured to receive the touch operation through the touch area, and send the touch position information generated by the touch operation to the processing module; the projector according to the projection
  • the brightness of the image information currently displayed on the screen determines the boundary of the display area, and the display area is used to display the processed target image information; the projector sends the first area information and the second area information to the processing module, so that the processing module is configured according to the first The area information, the second area information, and the touch location information determine target image information, the first area information is boundary information of the touch area, and the second area information is boundary information of the display area.
  • the projector includes a video input unit, an MCU, and a developing unit.
  • the projector determines the boundary of the touch area according to the light signal generated by the light emitting unit, including: the video input unit collects the light signal; and the video input unit determines the boundary of the touch area according to the light signal.
  • the projector determines the boundary of the display area according to the brightness of the image information currently displayed on the projection screen, including: the video input unit collects the brightness of the image information currently displayed on the projection screen; and the video input unit determines the display area according to the brightness of the image information currently displayed on the projection screen. The border.
  • the projector sends the first area information and the second area information to the processing module, including: the video input unit uses the boundary information of the touch area as the first area information; and the video input unit uses the boundary information of the display area as the second area information;
  • the video input unit transmits the first area information and the second area information to the MCU; the MCU transmits the first area information and the second area information to the processing module.
  • Step 604 specifically includes: the MCU receives the target image information sent by the processing module.
  • Step 605 specifically includes: the MCU processes the target image information to obtain information that the imaging unit can receive.
  • Step 606 specifically includes: the MCU transmitting the processed target image information to the developing unit; and the developing unit projecting the processed target image information to the projection screen.
  • the light emitting unit is an LED; the video input unit is a camera; and the target image information is an image or a video.
  • the projection screen can receive the touch operation through the capacitive touch film layer, and send the touch position information generated by the touch operation to the processing module for processing.
  • the module can determine the target image information according to the touch position information, and the projector can receive the target image information sent by the processing module, and project the processed target image information to the projection screen.
  • the infrared touch method is not needed. , thus improving the touch effect.
  • Another embodiment of the present invention provides a touch screen projection display method. As shown in FIG. 7-1, the method may include:
  • Step 701 The projection screen receives the touch operation through the capacitive touch film layer.
  • a capacitive touch film layer is disposed on the projection screen, and the user touches the capacitive touch film layer with a finger or other touch device such as a stylus, and the projection screen receives the touch operation through the capacitive touch film layer.
  • Capacitive touch mode is used, the number of touch points is more, the touch sensing precision is higher, and the quality of the projection display is higher.
  • Step 702 The projection screen sends the touch position information generated by the touch operation to the processing module.
  • An edge of the touch area of the projection screen is provided with a light emitting unit, and the touch area is used for receiving a touch operation.
  • the processing module may be any computer or the like having a computing and processing capability, and the light emitting unit may be disposed at four corners of the edge of the touch area, and the light emitting unit may be an LED.
  • An LED is a type of semiconductor diode that converts an electrical signal into an optical signal. It should be noted that any unit capable of converting an electrical signal into an optical signal may be a light-emitting unit, which is not limited in the embodiment of the present invention.
  • Step 703 The projector determines a boundary of the touch area according to the light signal generated by the light emitting unit.
  • the projector can determine the boundary of the touch area according to the light signal generated by the LED.
  • step 703 can include:
  • Step 7031 The video input unit collects an optical signal.
  • the video input unit can be a camera
  • the optical signal generated by the light emitting unit such as the LED can be collected by the camera.
  • Step 7032 The video input unit determines a boundary of the touch area according to the optical signal.
  • the camera can determine the boundary of the touch area based on the light signal generated by the LED.
  • Step 704 The projector determines a boundary of the display area according to the brightness of the image information currently displayed on the projection screen.
  • the display area is for displaying the processed target image information, which is the target image information determined in step 706. Since the image is displayed in the display area, different brightness will be generated. For example, a brightly colored image produces higher brightness, and a dimly colored image produces lower brightness, and no image information is displayed outside the display area, so images cannot be generated. The brightness of the information, therefore, the projector can determine the boundary of the display area according to the different brightness generated by the image information currently displayed on the projection screen.
  • step 704 can include:
  • Step 7041 The video input unit collects the brightness of the image information currently displayed on the projection screen.
  • the brightness of the image information currently displayed on the projection screen can be acquired by the camera.
  • Step 7042 The video input unit determines a boundary of the display area according to the brightness of the image information currently displayed on the projection screen.
  • the boundary of the display area is determined by the camera according to the brightness of the image information currently displayed by the acquired projection screen.
  • the boundary of the touch area and the boundary of the display area are determined by the video input unit, so that the touch position and the target image information correspond to each other, and the projector and the projection screen must be bound together in the prior art, otherwise
  • Step 705 The projector sends the first area information and the second area information to the processing module.
  • the first area information is boundary information of the touch area
  • the second area information is boundary information of the display area.
  • the MCU in the projector can send the boundary information of the touch area and the boundary information of the display area to the processing module.
  • the MCU is a single-chip microcomputer.
  • the MCU is a chip that integrates an internal processor, a memory, a counter, and an input/output port.
  • the data to be processed that is, the data including the first area information and the second area information, the calculation method, the steps, the operation command, and the like can be programmed into a program and stored in the memory, and the MCU can be operated at the time of operation.
  • the program is automatically and continuously retrieved from the memory and executed.
  • step 705 can include:
  • Step 7051 The video input unit uses the boundary information of the touch area as the first area information.
  • the boundary information of the touch area is used as the first area information.
  • Step 7052 The video input unit uses the boundary information of the display area as the second area information.
  • the video input unit determines the boundary of the display area as the second area information after determining the boundary of the display area according to the brightness of the image information currently displayed on the projection screen.
  • Step 7053 The video input unit sends the first area information and the second area information to the MCU.
  • the location information of the touch area and the location information of the display area may be sent to the MCU through the camera.
  • Step 7054 The MCU sends the first area information and the second area information to the processing module.
  • the location information of the touch area and the location information of the display area are sent to the processing module through the MCU.
  • Step 706 The processing module determines the target image information according to the touch location information.
  • the processing module determines the target image information according to the boundary information of the touch area, that is, the first area information, the boundary information of the display area, that is, the second area information and the touch position information. Specifically, the touch location may be determined to be in the display area. If the touch location is not in the display area, the target image information calculated by the processing module is empty; if the touch location is in the display area, the processing module is configured according to the storage. Corresponding relationship between the touch position and the image information determines the image information corresponding to the touch position generated by the touch operation, that is, the target image information. The correspondence between the touch position and the image information can be obtained according to the boundary information of the touch area and the boundary information of the display area. Taking FIG.
  • the processing module can capture the user's intention according to the boundary information of the touch area 012, the boundary information of the display area 014, and the touch position 015, and determine the user's intention. To open the folder 1, the processing module will eventually determine that the target image information is the image information after the folder 1 is opened.
  • the target image information may be an image stored in advance in the processing module, or may be a video stored in advance in the processing module.
  • Step 707 The MCU receives target image information sent by the processing module.
  • the processing module determines the target image information
  • the target image information is transmitted to the MCU.
  • Step 708 The MCU processes the target image information to obtain information that the imaging unit can receive.
  • the MCU processes the target image information determined by the processing module, and the processed target image information can be received by the imaging unit.
  • Step 709 The MCU sends the processed target image information to the imaging unit.
  • the developing unit is a unit for reproducing the target image information determined by the processing module, and the developing unit first converts the electrical signal into a light image, and then reflects the light image onto the projection screen, so that the projection screen displays the final image. Like or video.
  • Step 710 The developing unit projects the processed target image information to the projection screen.
  • the image forming unit projects the image information after the folder 1 is opened to the projection screen.
  • the image displayed on the projection screen is as shown in Figure 7-5.
  • Figure 7-5 The content displayed in it is all the contents of folder 1.
  • 012 is the touch area and 014 is the display area. It should be noted that the content of the display area in FIG. 7-5 is the partial content actually displayed, and other contents such as the path indication part are not shown.
  • the touch screen projection display method in the embodiment of the present invention only needs to add a capacitive touch film layer on the existing projection screen, and adds a video input unit to the existing projector, so the cost is low. .
  • the touch screen is a new type of human-computer interaction device, and the touch screen for human-computer interaction is currently the simplest, convenient and natural human-computer interaction mode.
  • the touch screen is easy to use, rugged, fast in response, and space saving, making the use of touch screens more and more widely used.
  • the touch screen is mainly used with the liquid crystal display module, and for the teaching, conference and other fields, due to the high cost of the large-size liquid crystal module, the display demand in these fields is still mainly based on the projector.
  • the method utilizes a projector to realize touch, which makes the touch technology easier to promote to a large-sized screen, and therefore, has high practicability.
  • the projection screen can receive the touch operation through the capacitive touch film layer, and send the touch position information generated by the touch operation to the processing module for processing.
  • the module can determine the target image information according to the touch position information, and the projector can receive the target image information sent by the processing module, and project the processed target image information to the projection screen.
  • the infrared touch method is not needed. , thus improving the touch effect.

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Abstract

一种触控屏投影显示系统，包括：投影幕布（01）、处理模块（02）和投影仪（03）。投影幕布（01）设置有电容式触控膜层（011），投影幕布（01）与处理模块（02）连接。投影幕布（01）用于通过电容式触控膜层（011）接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块（02）。处理模块（02）与投影仪（03）连接，处理模块（02）用于根据触控位置信息确定目标图像信息。投影仪（03）用于接收处理模块（02）发送的目标图像信息，对目标图像信息进行处理，并将处理后的目标图像信息投射至投影幕布（01）。还公开了一种投影幕布和触控投影显示方法。

Description

投影幕布、触控屏投影显示方法及系统 技术领域
本发明的实施例涉及显示技术领域，特别涉及一种投影幕布、触控屏投影显示方法及系统。
背景技术
投影显示系统是一种可以将图像或视频投射到投影幕布上的系统，可以通过不同的接口同计算机、影音光碟(英文：Video Compact Disc；简称：VCD)、数字通用光盘(英文：Digital Versatile Disc；简称：DVD)、蓝光光碟(英文：Blu-ray Disc，简称：BD)、游戏机、数字视频(英文：Digital Video；简称：DV)等相连接播放相应的视频信号。随着显示技术的快速发展，触控屏投影显示系统已成为一个备受关注的研究热点，触控屏投影显示系统无需通过控制终端来实现画面的切换。触控屏投影显示系统广泛应用于多媒体教学、动漫游戏、交通运输、金融、新闻媒体、政府会议等领域。
现有技术中有一种触控屏投影显示系统，该触控屏投影显示系统包括背投屏幕、红外触摸框、投影仪组和控制装置。其中，背投屏幕包括投影幕布和设置于投影幕布的光感应组件，该光感应组件检测投影幕布的亮度，生成对应的感应信号；红外触摸框感应触控动作，生成对应的电信号；投影仪组投射多幅图像至投影幕布，并使相邻图像的边缘重合；控制装置根据感应信号获取各图像在投影幕布上的重合区域，并根据重合区域控制投影仪组对投影幕布各点的亮度进行均匀化处理，将多个图像融合成一个无缝隙的整体画面，同时根据电信号获取该电信号产生位置对应的触控坐标，再根据触控坐标控制投影仪组进行画面切换。
上述触控屏投影显示系统采用的是红外触控方式，而红外触控存在触控点数较少 的问题，其触控点数一般不大于10点，且触控感应精度较低，因此，触控效果较差。
发明内容
为了解决现有触控屏投影显示系统的触控效果较差的问题，本发明提供了一种投影幕布、触控屏投影显示方法及系统。所述技术方案如下：
第一方面，提供了一种投影幕布，所述投影幕布设置有电容式触控膜层，
所述投影幕布用于通过所述电容式触控膜层接收触控操作，并将由所述触控操作产生的触控位置信息发送至处理模块。
可选地，所述投影幕布的触控区域的边缘设置有能够产生光信号的发光单元，所述触控区域用于接收所述触控操作。
可选地，所述发光单元为发光二极管LED。
第二方面，提供了一种触控屏投影显示系统，所述触控屏投影显示系统包括：投影幕布、处理模块和投影仪，
所述投影幕布设置有电容式触控膜层，所述投影幕布与所述处理模块连接，所述投影幕布用于通过所述电容式触控膜层接收触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块；
所述处理模块与所述投影仪连接，所述处理模块用于根据所述触控位置信息确定目标图像信息；
所述投影仪用于接收所述处理模块发送的目标图像信息，对所述目标图像信息进行处理，并将处理后的目标图像信息投射至所述投影幕布。
可选地，所述投影幕布的触控区域的边缘设置有发光单元，所述投影幕布用于通过所述触控区域接收所述触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块，所述投影仪还用于：
根据所述发光单元产生的光信号确定所述触控区域的边界；
根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，所述显示区域用于显示所述处理后的目标图像信息；
将第一区域信息和第二区域信息发送至所述处理模块，以便于所述处理模块根据所述第一区域信息、所述第二区域信息和所述触控位置信息确定所述目标图像信息，所述第一区域信息为所述触控区域的边界信息，所述第二区域信息为所述显示区域的边界信息。
可选地，所述投影仪包括视频输入单元、微控制单元MCU和显像单元，所述MCU分别与所述视频输入单元、所述显像单元和所述处理模块连接，
所述视频输入单元用于：
采集所述光信号；
根据所述光信号确定所述触控区域的边界；
将所述触控区域的边界信息作为所述第一区域信息；
采集所述投影幕布当前显示的图像信息的亮度；
根据所述投影幕布当前显示的图像信息的亮度确定所述显示区域的边界；
将所述显示区域的边界信息作为所述第二区域信息；
将所述第一区域信息和所述第二区域信息发送至所述MCU；
所述MCU用于：
将所述第一区域信息和所述第二区域信息发送至所述处理模块；
接收所述处理模块发送的目标图像信息；
对所述目标图像信息进行处理，得到所述显像单元可接收的信息；
将处理后的目标图像信息发送至所述显像单元；
所述显像单元用于：
将所述处理后的目标图像信息投射至所述投影幕布。
可选地，所述视频输入单元为摄像头。
可选地，所述目标图像信息为所述处理模块中预先存储的图像或视频。
第三方面，提供了一种触控屏投影显示方法，所述方法包括：
投影幕布通过电容式触控膜层接收触控操作；
所述投影幕布将由所述触控操作产生的触控位置信息发送至处理模块；
所述处理模块根据所述触控位置信息确定目标图像信息；
投影仪接收所述处理模块发送的目标图像信息；
所述投影仪对所述目标图像信息进行处理；
所述投影仪将处理后的目标图像信息投射至所述投影幕布。
可选地，所述投影幕布的触控区域的边缘设置有发光单元，在所述处理模块根据所述触控位置信息确定目标图像信息之前，所述方法还包括：
所述投影仪根据所述发光单元产生的光信号确定所述触控区域的边界，所述投影幕布用于通过所述触控区域接收所述触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块；
所述投影仪根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，所述显示区域用于显示所述处理后的目标图像信息；
所述投影仪将第一区域信息和第二区域信息发送至所述处理模块，以便于所述处理模块根据所述第一区域信息、所述第二区域信息和所述触控位置信息确定所述目标 图像信息，所述第一区域信息为所述触控区域的边界信息，所述第二区域信息为所述显示区域的边界信息。
可选地，所述投影仪包括视频输入单元、微控制单元MCU和显像单元，
所述投影仪根据所述发光单元产生的光信号确定所述触控区域的边界，包括：
所述视频输入单元采集所述光信号；
所述视频输入单元根据所述光信号确定所述触控区域的边界；
所述投影仪根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，包括：
所述视频输入单元采集所述投影幕布当前显示的图像信息的亮度；
所述视频输入单元根据所述投影幕布当前显示的图像信息的亮度确定所述显示区域的边界；
所述投影仪将第一区域信息和第二区域信息发送至所述处理模块，包括：
所述视频输入单元将所述触控区域的边界信息作为所述第一区域信息；
所述视频输入单元将所述显示区域的边界信息作为所述第二区域信息；
所述视频输入单元将所述第一区域信息和所述第二区域信息发送至所述MCU；
所述MCU将所述第一区域信息和所述第二区域信息发送至所述处理模块；
所述投影仪接收所述处理模块发送的目标图像信息，包括：
所述MCU接收所述处理模块发送的目标图像信息；
所述投影仪对所述目标图像信息进行处理，包括：
所述MCU对所述目标图像信息进行处理，得到所述显像单元可接收的信息；
所述投影仪将处理后的目标图像信息投射至所述投影幕布，包括：
所述MCU将所述处理后的目标图像信息发送至所述显像单元；
所述显像单元将所述处理后的目标图像信息投射至所述投影幕布。
可选地，所述发光单元为发光二极管LED。
可选地，所述视频输入单元为摄像头。
可选地，所述目标图像信息为所述处理模块中预先存储的图像或视频。
本发明提供了一种投影幕布、触控屏投影显示方法及系统，该触控屏投影显示系统的投影幕布先通过电容式触控膜层接收触控操作，再将由触控操作产生的触控位置信息发送至处理模块，处理模块根据触控位置信息确定目标图像信息，投影仪然后接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种投影幕布的结构示意图；
图2是本发明实施例提供的一种投影幕布的触控区域的结构示意图；
图3是本发明实施例提供的一种触控屏投影显示系统的结构示意图；
图4是本发明实施例提供的一种触控区域和显示区域的结构示意图；
图5是本发明实施例提供的一种投影仪的结构示意图；
图6是本发明实施例提供的一种触控屏投影显示方法的流程图；
图7-1是本发明实施例提供的另一种触控屏投影显示方法的流程图；
图7-2是本发明实施例提供的一种确定触控区域的边界的流程图；
图7-3是本发明实施例提供的一种确定显示区域的边界的流程图；
图7-4是本发明实施例提供的一种将区域信息发送至处理模块的流程图；
图7-5是本发明实施例提供的一种目标图像信息的显示示意图。
通过上述附图，已示出本发明明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本发明构思的范围，而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步的详细描述。
本发明实施例提供了一种投影幕布，如图1所示，该投影幕布01设置有电容式触控膜层011，投影幕布01用于通过电容式触控膜层011接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块02。
如图2所示，投影幕布01的触控区域012的边缘设置有能够产生光信号的发光单元013，触控区域012用于接收触控操作。可选地，发光单元013为发光二极管(英文：Light Emitting Diode；简称：LED)。
综上所述，本发明实施例提供的投影幕布，能够通过电容式触控膜层接收触控操 作，并将由触控操作产生的触控位置信息发送至处理模块，相较于现有技术中的投影幕布，无需采用红外触控方式，因此提高了触控效果。
本发明实施例提供了一种触控屏投影显示系统，如图3所示，该触控屏投影显示系统可以包括：投影幕布01、处理模块02和投影仪03，投影幕布01为图1所示的投影幕布。
其中，投影幕布01设置有电容式触控膜层，投影幕布01与处理模块02连接，投影幕布01用于通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块02。
处理模块02与投影仪03连接，处理模块02用于根据触控位置信息确定目标图像信息。
需要补充说明的是，电容式触控膜层利用人体的电流感应进行工作，当用户用手指或触控笔接触电容式触控膜层时，由于人体电场，手指或触控笔和电容式触控膜层会形成一个耦合电容，由于电容式触控膜层上接有高频信号，于是就会有一定量的电荷转移到手指或触控笔中，而为了恢复这些电荷的损失，电荷就会从电容式触控膜层的四个角补充回来，补充的电荷量和接触点到四个角的距离成正比，因此，可以计算出接触点所在的位置，该接触点所在的位置信息即为触控位置信息。
投影仪03用于接收处理模块02发送的目标图像信息，对目标图像信息进行处理，并将处理后的目标图像信息投射至投影幕布01。
综上所述，本发明实施例提供的触控屏投影显示系统，该触控屏投影显示系统的投影幕布能够通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块，处理模块能够根据触控位置信息确定目标图像信息，投影仪能够接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
可选地，如图2所示，投影幕布01的触控区域012的边缘设置有发光单元013， 投影幕布01用于通过触控区域012接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块。
相应地，投影仪03还用于：根据发光单元产生的光信号确定触控区域的边界。由于发光单元设置在投影幕布的触控区域的边缘位置，所以根据发光单元产生的光信号能够确定触控区域的边界；根据投影幕布当前显示的图像信息的亮度确定显示区域的边界，该显示区域用于显示处理后目标图像信息；将第一区域信息和第二区域信息发送至处理模块，以便于处理模块根据第一区域信息、第二区域信息和触控位置信息确定目标图像信息，第一区域信息为触控区域的边界信息，第二区域信息为显示区域的边界信息。图4示出了触控区域012和显示区域014的结构示意图，实际应用中，在触控区域的面积等于显示区域的面积的情况下，当对显示区域显示的目标图像的边缘进行触控操作时，对应位置的触控区域可能无法准确地接收到触控操作，因此，为了使触控区域能准确地接收到触控操作，需要使触控区域012的面积大于显示区域014的面积。图4中的015为触控操作对应的位置，016为文件夹1。需要说明的是，图4中的显示区域的内容为实际显示出来的部分内容，其他内容如路径指示部分未画出。
进一步地，如图5所示，投影仪03可以包括视频输入单元031、微控制单元(英文：Microcontroller Unit；简称：MCU)032和显像单元033，MCU 032分别与视频输入单元031、显像单元033和处理模块02连接。
其中，视频输入单元用于：采集光信号；根据光信号确定触控区域的边界，并获取触控区域的边界；将触控区域的边界信息作为第一区域信息；采集投影幕布01当前显示的图像信息的亮度；根据投影幕布01当前显示的图像信息的亮度确定显示区域的边界，并获取显示区域的边界；将显示区域的边界信息作为第二区域信息；将第一区域信息和第二区域信息发送至MCU 032，以便于MCU 032将第一区域信息和第二区域信息发送至处理模块02。视频输入单元031将触控区域的边界信息和显示区域的边界信息反馈给MCU 032，MCU 032再将触控区域的边界信息和显示区域的边界信息发送至处理模块02。需要说明的是，该视频输入单元与投影显示系统中的高清晰度多媒体接口(High Definition Multimedia Interface，简称HDMI)或视频图形阵列(Video Graphics Array，简称VGA)无关，该视频输入单元用于确定触控区域和显示区域的 边界，作为示例，视频输入单元可以为摄像头。
MCU 032用于：
1)将第一区域信息和第二区域信息发送至处理模块。
MCU 032将第一区域信息和第二区域信息发送至处理模块02，处理模块02便能够根据触控区域的边界信息即第一区域信息、显示区域的边界信息即第二区域信息和触控位置信息计算并确定目标图像信息。具体地，可以先判断触控位置是否在显示区域内，若触控位置不在显示区域内，则处理模块计算出来的目标图像信息为空；若触控位置在显示区域内，则处理模块根据存储的触控位置和图像信息的对应关系，确定由触控操作产生的触控位置对应的图像信息，即目标图像信息。该触控位置和图像信息的对应关系可以根据触控区域的边界信息和显示区域的边界信息获取得到，该获取过程可以参考现有技术。
表1示出了触控区域上的3个触控位置和3个触控位置对应的图像信息的关系表。如表1所示，当触控操作产生的触控位置为位置A时，投影幕布将位置A发送至处理模块，处理模块通过查询表1，获取位置A对应的图像信息为图像信息A1，因此，处理模块将图像信息A1作为目标图像信息。
表1
触控位置 图像信息
位置A 图像信息A1
位置B 图像信息B1
位置C 图像信息C1
2)接收处理模块02发送的目标图像信息。
3)对目标图像信息进行处理，得到显像单元033可接收的信息。
处理后的目标图像信息能够被显像单元所接收。MCU作为图像或视频处理设备，广泛应用于投影显示系统中，MCU能够用于处理图像、数据、声音等，从而确定图像的格式、质量、显示方式等。
4)将处理后的目标图像信息发送至显像单元033。
示例地，目标图像信息可以为处理模块02中预先存储的图像或视频。
显像单元033用于：将MCU 032处理后的目标图像信息投射至投影幕布01。显像单元033将MCU 032处理后的目标图像信息投射至投影幕布01，完成成像过程。
需要补充的说明的是，本发明实施例中的触控屏投影显示系统，只需在现有投影幕布上增加电容式触控膜层，在现有投影仪中增加视频输入单元，因此，成本较低，同时该触控屏投影显示系统利用投影仪实现触控，形成投影仪用电容式触控系统，触控技术更容易向超大尺寸屏幕推广，因此，触控屏投影显示系统的实用性更强。
综上所述，本发明实施例提供的触控屏投影显示系统，该触控屏投影显示系统的投影幕布能够通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块，处理模块能够根据触控位置信息确定目标图像信息，投影仪能够接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
本发明实施例提供了一种触控屏投影显示方法，如图6所示，该方法可以包括：
步骤601、投影幕布通过电容式触控膜层接收触控操作。
步骤602、投影幕布将由触控操作产生的触控位置信息发送至处理模块。
步骤603、处理模块根据触控位置信息确定目标图像信息。
步骤604、投影仪接收处理模块发送的目标图像信息。
步骤605、投影仪对目标图像信息进行处理。
步骤606、投影仪将处理后的目标图像信息投射至投影幕布。
综上所述，本发明实施例提供的触控屏投影显示方法，投影幕布能够通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块，处理模块能够根据触控位置信息确定目标图像信息，投影仪能够接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
可选地，投影幕布的触控区域的边缘设置有发光单元，在步骤603之前，该方法还可以包括：
投影仪根据发光单元产生的光信号确定触控区域的边界，投影幕布用于通过该触控区域接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块；投影仪根据投影幕布当前显示的图像信息的亮度确定显示区域的边界，显示区域用于显示处理后的目标图像信息；投影仪将第一区域信息和第二区域信息发送至处理模块，以便于处理模块根据第一区域信息、第二区域信息和触控位置信息确定目标图像信息，第一区域信息为触控区域的边界信息，第二区域信息为显示区域的边界信息。
可选地，投影仪包括视频输入单元、MCU和显像单元。
相应地，投影仪根据发光单元产生的光信号确定触控区域的边界，包括：视频输入单元采集光信号；视频输入单元根据光信号确定触控区域的边界。
投影仪根据投影幕布当前显示的图像信息的亮度确定显示区域的边界，包括：视频输入单元采集投影幕布当前显示的图像信息的亮度；视频输入单元根据投影幕布当前显示的图像信息的亮度确定显示区域的边界。
投影仪将第一区域信息和第二区域信息发送至处理模块，包括：视频输入单元将触控区域的边界信息作为第一区域信息；视频输入单元将显示区域的边界信息作为第二区域信息；视频输入单元将第一区域信息和第二区域信息发送至MCU；MCU将第一区域信息和第二区域信息发送至处理模块。
步骤604具体包括：MCU接收处理模块发送的目标图像信息。
步骤605具体包括：MCU对目标图像信息进行处理，得到显像单元可接收的信息。
步骤606具体包括：MCU将处理后的目标图像信息发送至显像单元；显像单元将处理后的目标图像信息投射至投影幕布。
可选地，发光单元为LED；视频输入单元为摄像头；目标图像信息为图像或视频。
综上所述，本发明实施例提供的触控屏投影显示方法，投影幕布能够通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块，处理模块能够根据触控位置信息确定目标图像信息，投影仪能够接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
本发明实施例提供了另一种触控屏投影显示方法，如图7-1所示，该方法可以包括：
步骤701、投影幕布通过电容式触控膜层接收触控操作。
投影幕布上设置有电容式触控膜层，用户用手指或其他触控装置如触控笔接触电容式触控膜层，投影幕布通过电容式触控膜层接收触控操作。使用电容式触控方式，触控点数更多，触控感应精度更高，投影显示的质量更高。
步骤702、投影幕布将由触控操作产生的触控位置信息发送至处理模块。
投影幕布的触控区域的边缘设置有发光单元，触控区域用于接收触控操作。示例地，处理模块可以为计算机等任一具备计算和处理能力的设备，发光单元可以设置在触控区域的边缘的四个角上，发光单元可以为LED。LED是半导体二极管的一种，能够把电信号转化成光信号。需要说明的是，任何能够将电信号转化为光信号的单元都可以为发光单元，本发明实施例对此不作限定。
关于电容式触控膜层接收触控操作及得到触控位置信息的具体过程可以参考现有技术，本发明实施例对此不再赘述。
步骤703、投影仪根据发光单元产生的光信号确定触控区域的边界。
由于投影幕布的触控区域的边缘设置有发光单元如LED，因此，投影仪能够很据LED产生的光信号确定触控区域的边界。
可选地，如图5所示，投影仪包括视频输入单元031、MCU 032和显像单元033，MCU 032分别与视频输入单元031、显像单元033和处理模块02连接。相应地，如图7-2所示，步骤703可以包括：
步骤7031、视频输入单元采集光信号。
示例地，视频输入单元可以为摄像头，则可以通过摄像头采集发光单元如LED产生的光信号。
步骤7032、视频输入单元根据光信号确定触控区域的边界。
示例地，摄像头能够根据LED产生的光信号确定触控区域的边界。
步骤704、投影仪根据投影幕布当前显示的图像信息的亮度确定显示区域的边界。
显示区域用于显示处理后的目标图像信息，该目标图像信息为步骤706中确定的目标图像信息。由于图像在显示区域显示的时候会产生高低不同的亮度，如颜色鲜艳的图像产生的亮度较高，颜色暗淡的图像产生的亮度越低，而显示区域之外没有显示图像信息，所以无法产生图像信息的亮度，因此，投影仪能够根据投影幕布当前显示的图像信息产生的高低不同的亮度来确定显示区域的边界。
如图7-3所示，步骤704可以包括：
步骤7041、视频输入单元采集投影幕布当前显示的图像信息的亮度。
示例地，可以通过摄像头采集投影幕布当前显示的图像信息的亮度。
步骤7042、视频输入单元根据投影幕布当前显示的图像信息的亮度确定显示区域的边界。
示例地，通过摄像头根据采集到的投影幕布当前显示的图像信息的亮度确定显示区域的边界。
本发明实施例通过视频输入单元确定触控区域的边界和显示区域的边界，使得触控位置和目标图像信息相对应，解决了现有技术中投影仪和投影幕布必须要绑定在一起，否则触控位置和目标图像信息难以准确对位的问题，提高了投影显示的灵活性，使得投影显示的应用场景更广泛。
步骤705、投影仪将第一区域信息和第二区域信息发送至处理模块。
第一区域信息为触控区域的边界信息，第二区域信息为显示区域的边界信息。视频输入单元确定了触控区域的边界和显示区域的边界之后，投影仪中的MCU便可以将触控区域的边界信息和显示区域的边界信息发送至处理模块。MCU即单片机，MCU是一块集成了内处理器、存储器、计数器、以及输入输出端口为一体的芯片。在该硬件电路的基础上，可以将要处理的数据即包括第一区域信息和第二区域信息的数据、计算方法、步骤、操作命令等编制成程序，并存放于存储器中，MCU在运行时能够自动地、连续地从存储器中取出并执行该程序。
如图7-4所示，步骤705可以包括：
步骤7051、视频输入单元将触控区域的边界信息作为第一区域信息。
视频输入单元根据发光单元产生的光信号确定了触控区域的边界之后，将触控区域的边界信息作为第一区域信息。
步骤7052、视频输入单元将显示区域的边界信息作为第二区域信息。
视频输入单元根据投影幕布当前显示的图像信息的亮度确定了显示区域的边界之后，将显示区域的边界信息作为第二区域信息。
步骤7053、视频输入单元将第一区域信息和第二区域信息发送至MCU。
示例地，可以先通过摄像头将触控区域的位置信息和显示区域的位置信息发送至MCU。
步骤7054、MCU将第一区域信息和第二区域信息发送至处理模块。
具体地，再通过MCU将触控区域的位置信息和显示区域的位置信息发送至处理模块。
步骤706、处理模块根据触控位置信息确定目标图像信息。
处理模块根据触控区域的边界信息即第一区域信息、显示区域的边界信息即第二区域信息和触控位置信息确定目标图像信息。具体地，可以先判断触控位置是否在显示区域内，若触控位置不在显示区域内，则处理模块计算出来的目标图像信息为空；若触控位置在显示区域内，则处理模块根据存储的触控位置和图像信息的对应关系，确定由触控操作产生的触控位置对应的图像信息，即目标图像信息。该触控位置和图像信息的对应关系可以根据触控区域的边界信息和显示区域的边界信息获取得到。以图4为例，假设触控操作产生在015所示的位置处，则处理模块能够根据触控区域012的边界信息、显示区域014的边界信息和触控位置015捕获用户意图，确定用户想要打开文件夹1，因此，处理模块最终会确定目标图像信息为文件夹1被打开后的图像信息。
需要说明的是，目标图像信息可以为处理模块中预先存储的图像，也可以为处理模块中预先存储的视频。
步骤707、MCU接收处理模块发送的目标图像信息。
处理模块确定了目标图像信息后，则将目标图像信息发送至MCU。
步骤708、MCU对目标图像信息进行处理，得到显像单元可接收的信息。
MCU对处理模块确定的目标图像信息进行处理，处理后的目标图像信息能够被显像单元接收。
步骤709、MCU将处理后的目标图像信息发送至显像单元。
显像单元是对处理模块确定的目标图像信息进行重现的单元，显像单元先将电信号转换为光图像，然后再将光图像反映到投影幕布上，以便于投影幕布显示最终的图 像或视频。
步骤710、显像单元将处理后的目标图像信息投射至投影幕布。
以步骤706中的文件夹1为例，显像单元将文件夹1被打开后的图像信息投射至投影幕布，最终，投影幕布显示出来的图像示意图如图7-5所示，图7-5中显示的内容即为文件夹1中的所有内容。图7-5中，012为触控区域，014为显示区域。需要说明的是，图7-5中的显示区域的内容为实际显示出来的部分内容，其他内容如路径指示部分未画出。
需要说明的是，本发明实施例中的触控屏投影显示方法，只需在现有投影幕布上增加电容式触控膜层，在现有投影仪中增加视频输入单元，因此，成本较低。
需要补充的说明的是，触摸屏作为一种新型的人机交互设备，采用触摸屏进行人机交互的方式是目前最简单、方便、自然的一种人机交互方式。触摸屏的易于使用、坚固耐用、反应速度快、节省空间等优点，使触摸屏的使用越来越广泛。目前触摸屏主要搭配液晶显示模组使用，而对于教学、会议等领域，由于超大尺寸液晶模组的成本较高，目前在这些领域的显示需求仍然以投影仪为主。而随着人机交互技术的快速发展，在投影显示上实现触控也是未来重要的发展方向。而该方法利用了投影仪实现触控，使得触控技术更容易向超大尺寸屏幕推广，因此，实用性较强。
综上所述，本发明实施例提供的触控屏投影显示方法，投影幕布能够通过电容式触控膜层接收触控操作，并将由触控操作产生的触控位置信息发送至处理模块，处理模块能够根据触控位置信息确定目标图像信息，投影仪能够接收处理模块发送的目标图像信息，并将处理后的目标图像信息投射至投影幕布，相较于现有技术，无需采用红外触控方式，因此提高了触控效果。
以上所述仅为本发明的示例性实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (14)

  1. 一种投影幕布，其中，所述投影幕布设置有电容式触控膜层，
    所述投影幕布用于通过所述电容式触控膜层接收触控操作，并将由所述触控操作产生的触控位置信息发送至处理模块。
  2. 根据权利要求1所述的投影幕布，其中，
    所述投影幕布的触控区域的边缘设置有能够产生光信号的发光单元，所述触控区域用于接收所述触控操作。
  3. 根据权利要求1或2所述的投影幕布，其中，
    所述发光单元为发光二极管LED。
  4. 一种触控屏投影显示系统，其中，所述触控屏投影显示系统包括：投影幕布、处理模块和投影仪，
    所述投影幕布设置有电容式触控膜层，所述投影幕布与所述处理模块连接，所述投影幕布用于通过所述电容式触控膜层接收触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块；
    所述处理模块与所述投影仪连接，所述处理模块用于根据所述触控位置信息确定目标图像信息；
    所述投影仪用于接收所述处理模块发送的目标图像信息，对所述目标图像信息进行处理，并将处理后的目标图像信息投射至所述投影幕布。
  5. 根据权利要求4所述的触控屏投影显示系统，其中，所述投影幕布的触控区域的边缘设置有发光单元，所述投影幕布用于通过所述触控区域接收所述触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块，所述投影仪还用于：
    根据所述发光单元产生的光信号确定所述触控区域的边界；
    根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，所述显示区域用于显示所述处理后的目标图像信息；
    将第一区域信息和第二区域信息发送至所述处理模块，以便于所述处理模块根据所述第一区域信息、所述第二区域信息和所述触控位置信息确定所述目标图像信息，所述第一区域信息为所述触控区域的边界信息，所述第二区域信息为所述显示区域的边界信息。
  6. 根据权利要求5所述的触控屏投影显示系统，其中，所述投影仪包括视频输入单元、微控制单元MCU和显像单元，所述MCU分别与所述视频输入单元、所述显像单元和所述处理模块连接，
    所述视频输入单元用于：
    采集所述光信号；
    根据所述光信号确定所述触控区域的边界；
    将所述触控区域的边界信息作为所述第一区域信息；
    采集所述投影幕布当前显示的图像信息的亮度；
    根据所述投影幕布当前显示的图像信息的亮度确定所述显示区域的边界；
    将所述显示区域的边界信息作为所述第二区域信息；
    将所述第一区域信息和所述第二区域信息发送至所述MCU；
    所述MCU用于：
    将所述第一区域信息和所述第二区域信息发送至所述处理模块；
    接收所述处理模块发送的目标图像信息；
    对所述目标图像信息进行处理，得到所述显像单元可接收的信息；
    将处理后的目标图像信息发送至所述显像单元；
    所述显像单元用于：
    将所述处理后的目标图像信息投射至所述投影幕布。
  7. 根据权利要求6所述的触控屏投影显示系统，其中，
    所述视频输入单元为摄像头。
  8. 根据权利要求4至7任一所述的触控屏投影显示系统，其中，
    所述目标图像信息为所述处理模块中预先存储的图像或视频。
  9. 一种触控屏投影显示方法，其中，所述方法包括：
    投影幕布通过电容式触控膜层接收触控操作；
    所述投影幕布将由所述触控操作产生的触控位置信息发送至处理模块；
    所述处理模块根据所述触控位置信息确定目标图像信息；
    投影仪接收所述处理模块发送的目标图像信息；
    所述投影仪对所述目标图像信息进行处理；
    所述投影仪将处理后的目标图像信息投射至所述投影幕布。
  10. 根据权利要求9所述的方法，其中，所述投影幕布的触控区域的边缘设置有发光单元，在所述处理模块根据所述触控位置信息确定目标图像信息之前，所述方法还包括：
    所述投影仪根据所述发光单元产生的光信号确定所述触控区域的边界，所述投影幕布用于通过所述触控区域接收所述触控操作，并将由所述触控操作产生的触控位置信息发送至所述处理模块；
    所述投影仪根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，所述显示区域用于显示所述处理后的目标图像信息；
    所述投影仪将第一区域信息和第二区域信息发送至所述处理模块，以便于所述处理模块根据所述第一区域信息、所述第二区域信息和所述触控位置信息确定所述目标图像信息，所述第一区域信息为所述触控区域的边界信息，所述第二区域信息为所述显示区域的边界信息。
  11. 根据权利要求10所述的方法，其中，所述投影仪包括视频输入单元、微控制单元MCU和显像单元，
    所述投影仪根据所述发光单元产生的光信号确定所述触控区域的边界，包括：
    所述视频输入单元采集所述光信号；
    所述视频输入单元根据所述光信号确定所述触控区域的边界；
    所述投影仪根据所述投影幕布当前显示的图像信息的亮度确定显示区域的边界，包括：
    所述视频输入单元采集所述投影幕布当前显示的图像信息的亮度；
    所述视频输入单元根据所述投影幕布当前显示的图像信息的亮度确定所述显示区域的边界；
    所述投影仪将第一区域信息和第二区域信息发送至所述处理模块，包括：
    所述视频输入单元将所述触控区域的边界信息作为所述第一区域信息；
    所述视频输入单元将所述显示区域的边界信息作为所述第二区域信息；
    所述视频输入单元将所述第一区域信息和所述第二区域信息发送至所述MCU；
    所述MCU将所述第一区域信息和所述第二区域信息发送至所述处理模块；
    所述投影仪接收所述处理模块发送的目标图像信息，包括：
    所述MCU接收所述处理模块发送的目标图像信息；
    所述投影仪对所述目标图像信息进行处理，包括：
    所述MCU对所述目标图像信息进行处理，得到所述显像单元可接收的信息；
    所述投影仪将处理后的目标图像信息投射至所述投影幕布，包括：
    所述MCU将所述处理后的目标图像信息发送至所述显像单元；
    所述显像单元将所述处理后的目标图像信息投射至所述投影幕布。
  12. 根据权利要求10所述的方法，其中，
    所述发光单元为发光二极管LED。
  13. 根据权利要求11所述的方法，其中，
    所述视频输入单元为摄像头。
  14. 根据权利要求9至13任一所述的方法，其中，
    所述目标图像信息为所述处理模块中预先存储的图像或视频。
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CN110087050A (zh) * 2019-05-28 2019-08-02 东莞市彬臣五金电子有限公司 一种多功能的投影装置
CN112882563A (zh) * 2019-11-29 2021-06-01 中强光电股份有限公司 触控投影系统与其方法

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