WO2019061632A1 - 头戴显示设备的控制方法、设备和系统 - Google Patents

头戴显示设备的控制方法、设备和系统 Download PDF

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Publication number
WO2019061632A1
WO2019061632A1 PCT/CN2017/108080 CN2017108080W WO2019061632A1 WO 2019061632 A1 WO2019061632 A1 WO 2019061632A1 CN 2017108080 W CN2017108080 W CN 2017108080W WO 2019061632 A1 WO2019061632 A1 WO 2019061632A1
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WIPO (PCT)
Prior art keywords
visor
period
lens
incident
lens module
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PCT/CN2017/108080
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English (en)
French (fr)
Inventor
杜洋
Original Assignee
歌尔科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201710892501.9A external-priority patent/CN107688241B/zh
Priority claimed from CN201710891857.0A external-priority patent/CN107561708A/zh
Application filed by 歌尔科技有限公司 filed Critical 歌尔科技有限公司
Publication of WO2019061632A1 publication Critical patent/WO2019061632A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof

Definitions

  • the present disclosure relates to the field of display technologies, and more particularly, to a control method of a head mounted display device, a head mounted display device, and a head mounted display system.
  • the head mounted display device is, for example, a virtual reality display device or a head mounted augmented reality display device.
  • Conventional head-mounted display devices generally use a liquid crystal display (LCD display). Since the response time of the LCD display is long, that is, the scanning time of each frame of the LCD display is relatively long, the holding time of each frame is relatively short, and when the frame rate is relatively high, serious dragging occurs. Shadow phenomenon. Especially for head-mounted display devices, the resolution requirements are higher, and the frame rate is also higher. The retention time of each frame is shorter, and the smear phenomenon is more obvious.
  • LCD display liquid crystal display
  • a control method of a head mounted display device comprising a lens module, at least one visor, and at least one LCD display screen, the at least one visor being located at Between the lens module and the at least one LCD display screen; the control method includes: controlling the at least one visor to be in a closed state during a first period of a frame period to block from at least one of the LCD displays Light is incident on the lens module; controlling the at least one visor to be in an open state during a second period of the frame period to cause light from at least one of the display screens to be incident on the lens module; And a sum of the first time period and the second time period is equal to the frame time period, and the second time period is after the first time period.
  • the lens module includes a lens holder and a left disposed on the lens holder a lens and a right lens; the at least one visor being fixed to the lens holder.
  • the light shielding plate is a liquid crystal light shielding film
  • the liquid crystal light shielding film comprises a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer between the first substrate and the second substrate.
  • the liquid crystal molecules of the LCD display screen are in a stable state.
  • the visor includes a left visor corresponding to the left lens and a right visor corresponding to the right lens
  • the LCD display screen is one;
  • the control method includes: the frame period corresponds to a left eye image; a first period of the frame period, controlling the left visor and the right visor to be in a closed state to prevent light from the display screen from being incident on the lens module; during a second period of the frame period, Controlling the left visor to be in an open state such that light from the display screen is incident on the lens module and controlling the right visor to be in a closed state to prevent light from the display screen from being incident on the lens a frame period corresponding to a right eye image; during a first period of the frame period, controlling the left visor and the right visor to be in a closed state to prevent light from the display screen from being incident on the a lens module; during a second period of the frame period, controlling the right visor to be in an open state such that light from the display screen is incident on the lens module and controlling the left visor
  • the visor includes a left visor corresponding to the left lens and a right visor corresponding to the right lens
  • the LCD display screen includes a left display screen corresponding to the left lens and a right display screen corresponding to the right lens
  • the control The method includes: the frame period corresponds to a left eye image; during a first period of the frame period, controlling the left visor and the right visor to be in a closed state to block display from the left display and the right display
  • the light of the screen is incident on the lens module; during a second period of the frame period, the left visor is controlled to be in an open state such that light from the left display is incident on the lens module, and is controlled
  • the right visor is in a closed state to prevent light from the right display from being incident on the lens module;
  • the frame period corresponds to a right eye image; and during the first time period of the frame period, the left opacity is controlled
  • the plate and the right visor are in a closed state to prevent light from the display screen from being incident on
  • a head mounted display device includes a lens module, at least one visor, at least one LCD display screen, and a controller; the at least one visor is located in the Between the lens module and the at least one LCD display screen; the LCD component further includes a controller; the controller is configured to: control the at least one visor to be in a closed state during a first period of a frame period to block Light from at least one of the LCD display screens is incident on the lens module; controlling the at least one visor to be in an open state for incident light from at least one of the display screens during a second period of the frame period And to the lens module; wherein, a sum of the first time period and the second time period is equal to the frame time period, and the second time period is after the first time period.
  • the lens module includes a lens holder and left and right lenses disposed on the lens holder; the at least one light shielding plate is fixed on the lens holder.
  • the light shielding plate is a liquid crystal light shielding film
  • the liquid crystal light shielding film comprises a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer between the first substrate and the second substrate.
  • the visor includes a left visor corresponding to the left lens and a right visor corresponding to the right lens
  • the LCD display screen is one;
  • the controller is configured to: when the frame period corresponds to the left eye image; a first period of the frame period, controlling the left visor and the right visor to be in a closed state to prevent light from the display screen from being incident on the lens module; during a second period of the frame period Controlling the left visor to be in an open state such that light from the display screen is incident on the lens module and controlling the right visor to be in a closed state to prevent light from the display screen from being incident on the a lens module; when the frame period corresponds to a right eye image; controlling the left visor and the right visor to be in a closed state during a first period of the frame period to prevent light from the display screen from being incident on
  • the lens module is configured to control the right visor to be in an open state during a second period of the frame period to cause light from the display screen to be incident on the lens module and
  • the visor includes a left visor corresponding to the left lens and a right visor corresponding to the right lens
  • the LCD display screen includes a left display screen corresponding to the left lens and a right display screen corresponding to the right lens
  • the controller is configured to: when the frame period corresponds to the left eye image; during the first period of the frame period, Controlling the left visor and the right visor to be in a closed state to prevent light from the left display and the right display from being incident on the lens module; during a second period of the frame period, controlling The left visor is in an open state such that light from the left display screen is incident on the lens module, and the right visor is controlled to be in a closed state to prevent light from the right display from being incident on the a lens module; when the frame period corresponds to a right eye image; controlling the left visor and the right visor to be in a closed state during a first period of the frame period to prevent light from the display screen from being incident on
  • the lens module is configured to control the right visor to
  • the controller is only used to control the visor.
  • a head mounted display device comprising a control unit, the control unit being operative to perform the method of any of the first aspects.
  • a head mounted display system comprising a head mounted display device for displaying image information output by an external processing system to a user; the external processing system For outputting image information to a head mounted display device, and the external processing system includes a control unit that operates to perform the method of any of the first aspects.
  • the display screen during the flipping process of the liquid crystal molecules of the LCD display screen is transmitted into the eyes of the user as little as possible, which is advantageous for reducing the smear phenomenon of the head mounted display device.
  • FIG. 1 is a schematic structural diagram of a head mounted display device according to an embodiment of the present disclosure.
  • FIG. 2 is a flow chart of a method of controlling a head mounted display device provided by an embodiment of the present disclosure.
  • FIG. 3 is a timing diagram of an example of a control method of a head mounted display device provided by an embodiment of the present disclosure.
  • FIG. 4 is a timing diagram of another example of a method of controlling a head mounted display device provided by an embodiment of the present disclosure.
  • FIG. 5 is a timing diagram of another example of a method of controlling a head mounted display device provided by an embodiment of the present disclosure.
  • FIG. 6 is a structural diagram of a liquid crystal light shielding sheet provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a head mounted display device according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a head mounted display device according to another embodiment of the present disclosure.
  • FIG. 9 is a block diagram of a head mounted display device provided by an embodiment of the present disclosure.
  • FIG. 10 is a block diagram of a head mounted display device provided by another embodiment of the present disclosure.
  • FIG. 11 is a block diagram of a hardware configuration of a head mounted display device provided by an embodiment of the present disclosure.
  • the head mounted display device provided by the present disclosure includes a lens module 1 and an LCD display.
  • FIG. 1 the various components shown in FIG. 1 are merely illustrative, and the dimensional relationships of the components shown therein are not intended to limit the present disclosure.
  • the visor 3 is disposed between the lens module 1 and the LCD display 2. In other examples, the visor 3 is disposed in front of the lens module 1 (toward the user side, not shown in FIG. 1).
  • the lens module 1 includes a lens holder 1A, a left lens 1L provided on the lens holder 1A, and a right lens 1R provided on the lens holder 1A.
  • the visor 3 is fixed to the lens holder 1A.
  • the visor 3 is used to block the LCD display 2. When the visor 3 is in an open state, light can pass through the visor 3. When the visor 3 is in the closed state, light cannot pass through the visor 3 or rarely.
  • the light shielding plate 3 is, for example, a liquid crystal light shielding sheet. The liquid crystal shutter can be switched between an open state and a closed state under the control of an electrical signal.
  • an embodiment of the present disclosure provides a method of controlling a head mounted display device.
  • the lens module 1 is divided into two parts, a left lens 1L and a right lens 1R.
  • the left lens 1L transmits the picture of the left half display area 2L of the LCD display 2 into the left eye of the user.
  • the right lens 1R transmits the picture of the right half display area 2R of the LCD display 2 into the right eye of the user.
  • the LCD display 2 simultaneously displays the left eye image and the right eye image.
  • the lens module 1 is divided into two parts, a left lens 1L and a right lens 1R.
  • the LCD display 2 includes a separate left display 2L and a right display 2R.
  • the left lens 1L transmits the picture of the left display 2L to the left eye of the user
  • the right lens 1R is used to transmit the picture of the right display 2R into the right eye of the user.
  • the timings of the left display 2L and the right display 2R are synchronized.
  • the method includes the following steps.
  • the at least one visor is controlled to be in a closed state during a first period of one frame period to prevent light from at least one of the LCD display panels from being incident on the lens module.
  • the at least one visor is controlled to be in an open state such that light from at least one of the display screens is incident on the lens module.
  • one frame period (which can also be a frame period) can be divided into liquid crystals from the first line.
  • the time required for the flipping of the liquid crystal molecules to the last row is completed (herein defined as the LCD screen unstable time T1), and the remaining time of one frame period (herein defined as the LCD screen stabilization time T2).
  • the time during which the visor 3 is in the off state is defined as the first time period T_C.
  • the time period in which the visor 3 is in the open state defines the second time period T_O.
  • the sum of the first time period T_C and the second time period T_O is one frame period.
  • the first time period T_C appears before the second time period T_O.
  • the start point and the end point of the first time period T_C correspond to the start point and the end point of the LCD screen unstable time T1, respectively.
  • the control visor 3 is in a closed state.
  • the start point and the end point of the second time period T_O correspond to the start point and the end point of the liquid crystal screen picture stabilization time T2, respectively.
  • the control visor 3 is in an open state.
  • the difference is that the second period T_O corresponds to a period of time in the liquid crystal panel picture stabilization time T2. It is further ensured that the liquid crystal molecules of the LCD display screen are in a stable state during the second time period T_O.
  • the second time period T_O corresponds to all of the liquid crystal screen picture stabilization time T2 and part of the liquid crystal screen picture instability time T1 of one frame period.
  • the second time period T_O corresponds to the partial LCD screen unstable time T1 compared with the example shown in FIG. 3, this may cause the smear phenomenon of the head mounted display device to increase slightly, but the extension of the second time period T_O may Increase the brightness of the screen.
  • a person skilled in the art can set the second time period T_O to extend backward, including the partial time of the LCD screen unstable time T1 of the next frame period.
  • the resolution of the LCD display is 1080*720 as an example for further explanation.
  • the first time period T_C is the time from the time when the liquid crystal molecules of the first row in one frame period starts to be inverted to the time when the liquid crystal molecules of the 1080th line are turned over
  • the second time period T_O is the time remaining in the frame time period.
  • the first time period T_C is a time period from the time when the liquid crystal molecules of the first row in the frame period starts to be inverted to the time after the liquid crystal molecules of the 1080th line are turned over, and the second time period T_O is the time remaining in the frame time period.
  • the first time period T_C is the start of the first row of liquid crystal molecules in one frame period.
  • the time of the inversion to the moment when the liquid crystal molecules complete the inversion in a certain row (for example, the 1000th row or the 950th row, etc.), and the second period T_O is the remaining time in the frame period.
  • the second time period T_O can also be set to complete the flipping of the liquid crystal molecules from the time when the liquid crystal molecules of the 1080th line of the current frame are flipped to the time of the next frame (for example, the fifth line of the next frame). The moment, and so on.
  • the picture during the flipping process of the liquid crystal molecules of the LCD display 2 is not transmitted into the eyes of the user, or during the flipping of the liquid crystal molecules of the LCD display 2. The picture is transmitted into the user's eyes as little as possible.
  • the picture transmitted into the user's eyes is the picture in which the liquid crystal molecules of the LCD display are in a stable state, or the picture transmitted into the eyes of the user is as far as possible the picture in which the liquid crystal molecules of the LCD display are in a stable state. Thereby, the smear phenomenon of the head mounted display device is effectively reduced.
  • the visor 3 is specifically a liquid crystal visor.
  • the liquid crystal light shielding sheet includes a first substrate 31, a second substrate 32, and a liquid crystal layer 33 disposed between the first substrate 31 and the second substrate 32.
  • the first substrate 31 and the second substrate 32 are both transparent substrates such as a glass substrate or a plastic substrate.
  • the material of the liquid crystal layer 33 is, for example, a negative dye liquid crystal.
  • the negative dye liquid crystal is a negative liquid crystal mixed with a dichroic dye.
  • the transmittance of the liquid crystal shutter is very high.
  • the transmittance of the liquid crystal shutter is extremely low.
  • FIG. 6 Also shown in FIG. 6 is a first transparent electrode layer 34 and a first alignment film 35 which are sequentially disposed on one surface of the first substrate 31 facing the liquid crystal layer 33, and a side of the second substrate 32 facing the liquid crystal layer 33.
  • the second transparent electrode layer 36 and the second alignment film 37 are sequentially disposed.
  • the liquid crystal molecules in the liquid crystal layer 33 are controlled to be in different states, thereby controlling the intensity of light transmitted through the liquid crystal mask.
  • FIG. 1 The structure on which another embodiment of the control method of the head mounted display device provided by the present disclosure is based is shown in FIG.
  • the visor 3 in this embodiment includes two discrete left visors 3L and right visors 3R.
  • the left visor 3L corresponds to the left lens 1L
  • the right visor 3R corresponds to the right lens 1L.
  • LCD display Screen 2 is a display screen.
  • the LCD display 2 alternately displays the left eye image and the right eye image.
  • the left lens 1L is for transmitting the full screen picture of the LCD display 2 into the left eye of the user.
  • the right lens 1R is for transmitting the full screen picture of the LCD display 2 into the right eye for use.
  • the opening and closing of the left shutter 3L is controlled in accordance with the aforementioned method, and the right shutter 3R is controlled to be in the closed state.
  • the LCD display 2 displays the left eye image
  • light from the LCD display 2 is not incident on the right lens 1R, and only the left eye of the user can see the left eye image displayed on the LCD display 2.
  • the smear phenomenon of the display screen seen by the left eye is suppressed.
  • the opening and closing of the right visor 3R is controlled as described above, and the left visor is controlled to be in a closed state.
  • the LCD display 2 displays the right eye image
  • light from the LCD display 2 is not incident on the left lens 1L, and only the right eye of the user can see the right eye image displayed on the LCD display 2.
  • the smear phenomenon of the display screen seen by the right eye is suppressed.
  • the present disclosure also provides an embodiment of another control method of the head mounted display device.
  • the visor 3 in this embodiment includes two discrete left visors 3L and right visors 3R.
  • the left visor 3L corresponds to the left lens 1L
  • the right visor 3R corresponds to the right lens 1L.
  • the LCD display 2 is a display screen.
  • the LCD display 2 alternately displays the left eye image and the right eye image.
  • the left lens 1L is for transmitting the full screen picture of the LCD display 2 into the left eye of the user.
  • the right lens 1R is for transmitting the full screen picture of the LCD display 2 into the right eye for use.
  • the left shutter 3L is always controlled to be in an open state, and the right shutter 3R is controlled to be in a closed state.
  • the right shutter 3R is always controlled to be in an open state, and the left shutter is controlled to be in a closed state.
  • the LCD display screen in this embodiment can be replaced with other types of display screens, such as an OLED display screen, etc., and the technical effect of widening the angle of view can be achieved.
  • FIG. 1 The structure on which another embodiment of the control method of the head mounted display device provided by the present disclosure is based is shown in FIG.
  • the visor 3 in this embodiment includes two discrete left visors 3L and right visors 3R.
  • the left visor 3L corresponds to the left lens 1L
  • the right visor 3R corresponds to the right lens 3L.
  • the LCD display 2 is two display screens: a left display 2L and a right display 2R.
  • the left display 2L displays the left eye image and the right display 2R displays the right eye image alternately.
  • the left lens 1L is for transmitting the full screen of the left display 2L into the left eye of the user.
  • the right lens 1R is for transmitting the full screen of the right display 2R into the right eye for use.
  • the opening and closing of the left shutter 3L is controlled in accordance with the aforementioned method, and the right shutter 3R is controlled to be in the closed state.
  • the left display 2L displays the left eye image
  • no light from the right display 2R is incident on the right lens 1R, and only the left eye of the user can see the left eye image displayed on the left display 2L.
  • the smear phenomenon of the display screen seen by the left eye is suppressed.
  • the switching and closing of the right shutter 3R are controlled in accordance with the aforementioned method, and the left shutter is controlled to be in a closed state.
  • the right display 2R displays the right eye image
  • no light from the left display 2L is incident on the left lens 1L, and only the right eye of the user can see the right eye image displayed on the right display 2R.
  • the smear phenomenon of the display screen seen by the right eye is suppressed.
  • the present disclosure also provides a head mounted display device, as shown in FIG.
  • the head mounted display device further includes a controller 4 with respect to the head mounted display device shown in FIG.
  • the controller 4 is arranged to control the opening and closing of the visor 3 in accordance with the aforementioned method.
  • the controller 4 outputs display data to the LCD display 2, and controls the opening and closing of the shutter 3.
  • a display data output module 5 is also included as compared to the example shown in FIG.
  • the display data output module 5 is, for example, the core of the entire head mounted display device
  • the processor outputs display data to the LCD display 2.
  • the controller 4 is only used to control the opening and closing of the visor 3.
  • the timing of each frame of the LCD display 2 display screen is fixed. Therefore, only the display data output module 5 is required to provide a synchronization signal to the controller 4.
  • the controller 4 counts the frame period under the action of the synchronization signal, and the controller 4 can control the opening and closing of the visor 3 according to the foregoing method. .
  • the output of the display data to the LCD display 2 and the opening and closing of the control visor 3 are implemented by the two modules, reducing the complexity of each module.
  • FIG. 11 is a block diagram showing the internal configuration of the head mounted display device 100 in some embodiments.
  • the display unit 101 may include a display panel that is disposed on a side surface of the head mounted display device 100 facing the user's face, and is applied to the present disclosure, and the display unit 101 includes a one-piece LCD display screen. Or the display unit 101 includes two LCD display screens for displaying a left eye image and a right eye image, respectively. Of course, the display unit 101 further includes a backlight that provides backlighting for the above LCD display screen.
  • the virtual image optical unit 102 photographs the image displayed by the display unit 101 in an enlarged manner, and allows the user to observe the displayed image in the enlarged virtual image.
  • the display image outputted to the display unit 101 it may be an image of a virtual scene supplied from a content reproduction device (a Blu-ray disc or a DVD player) or a streaming server, or an image of a real scene photographed using the external camera 110.
  • virtual image optical unit 102 can include a lens unit, such as a spherical lens, an aspheric lens, a Fresnel lens, and the like.
  • the virtual image optical unit includes a left lens 1L and a right lens 1R.
  • the input operation unit 103 includes at least one operation member for performing an input operation, such as a button, a button, a switch, or other similarly functioned component, receives a user instruction through the operation member, and outputs an instruction to the control unit 107.
  • an input operation such as a button, a button, a switch, or other similarly functioned component
  • the status information acquisition unit 104 is configured to acquire status information of the user wearing the head mounted display device 100.
  • the status information acquisition unit 104 may include various types of sensors for detecting status information by itself, and may acquire status information from an external device such as a smartphone, a wristwatch, and other multi-function terminals worn by the user through the communication unit 105.
  • the status information acquisition unit 104 can acquire location information and/or posture information of the user's head.
  • the status information acquisition unit 104 may include a camera, a 6-axis sensor, a 9-axis sensor, a gyro sensor, an acceleration sensor, a global positioning system (GPS) sensor, One or more of a geomagnetic sensor, a Doppler effect sensor, an infrared sensor, and an RF field strength sensor.
  • the state information acquiring unit 104 acquires state information of the user wearing the head-mounted display device 100, for example, acquiring the position of the user's gaze on the current screen, the operation state of the user (whether the user wears the head-mounted display device 100), and the action state of the user.
  • the communication unit 105 performs communication processing, modulation and demodulation processing with an external device, and encoding and decoding processing of the communication signal.
  • the control unit 107 can transmit transmission data from the communication unit 105 to an external device.
  • the communication method may be wired or wireless, such as mobile high-definition link (MHL) or universal serial bus (USB), high-definition multimedia interface (HDMI), wireless fidelity (Wi-Fi), Bluetooth communication, or low-power Bluetooth communication. And the mesh network of the IEEE802.11s standard.
  • communication unit 105 can be a cellular wireless transceiver that operates in accordance with Wideband Code Division Multiple Access (W-CDMA), Long Term Evolution (LTE), and the like.
  • W-CDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • the head mounted display device 100 may further include a storage unit, which is a mass storage device configured to have a solid state drive (SSD) or the like.
  • storage unit 106 can store applications or various types of data. For example, content viewed by the user using the head mounted display device 100 may be stored in the storage unit 106.
  • the head mounted display device 100 may further include a control unit 107, which may include a computer processing unit (CPU) or other device having similar functions.
  • the control unit 107 can be used to execute instructions stored by the storage unit 106, which when executed to implement the methods provided by the various embodiments described above, or the control unit 107 can also include some embodiments for performing the disclosure of the present application. The method, function and operation of the circuit.
  • the image processing unit 108 is for performing signal processing such as image quality correction related to the image signal output from the control unit 107, and converting its resolution into a resolution according to the screen of the display unit 101. Then, the display driving unit 109 sequentially selects each line of pixels of the display unit 101, and sequentially scans each line of pixels of the display unit 101 line by line, thereby providing a pixel signal based on the signal-processed image signal.
  • the head mounted display device 100 can also include an external camera.
  • External camera 110 The front surface of the body of the head mounted display device 100 may be disposed, and the external camera 110 may be one or more.
  • the external camera 110 can acquire three-dimensional information and can also be used as a distance sensor. Additionally, a position sensitive detector (PSD) or other type of distance sensor that detects reflected signals from the object can be used with the external camera 110.
  • PSD position sensitive detector
  • the external camera 110 and the distance sensor can be used to detect the body position, posture, and shape of the user wearing the head mounted display device 100. In addition, under certain conditions, the user can directly view or preview the real scene through the external camera 110.
  • the head mounted display device 100 may further include a sound processing unit 111 that can perform sound quality correction or sound amplification of the sound signal output from the control unit 107, signal processing of the input sound signal, and the like. Then, the sound input/output unit 112 outputs the sound to the outside and the sound from the microphone after the sound processing.
  • a sound processing unit 111 that can perform sound quality correction or sound amplification of the sound signal output from the control unit 107, signal processing of the input sound signal, and the like. Then, the sound input/output unit 112 outputs the sound to the outside and the sound from the microphone after the sound processing.
  • the structure or components shown by the dotted line in FIG. 11 may be independent of the head mounted display device 100, for example, may be disposed in an external processing system (for example, a computer system or a host of a split type head mounted display device, a handle, etc.) Used in conjunction with the head mounted display device 100; or the structure or components shown in dashed lines may be disposed inside or on the head mounted display device 100.
  • the head mounted display device 100 and the external processing system constitute a head mounted display system.
  • the external processing system may include a control unit for performing the method mentioned in any of the above embodiments, the external processing system outputs image information to the head mounted display device, and the head mounted display device may be used for the user Display image information output by the external processing system.
  • the connection of the control power source 107 to the light shielding plate 3 is not shown.
  • the control unit 107 controls the opening and closing of the shutter 3.
  • the visor 3 is a one-piece visor while obscuring the left lens 1L and the right lens 1R.
  • the visor 3 is divided into a left visor 3L and a right visor 3R, respectively blocking the left lens 1L and the right lens 1R.
  • the present disclosure can be a system, method, and/or computer program product.
  • the computer program product can comprise a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
  • the computer readable storage medium can be a tangible device that can hold and store the instructions used by the instruction execution device.
  • the computer readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
  • Non-exhaustive List includes: portable computer disk, hard disk, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash), static random access memory (SRAM), portable compression Disk read only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanical encoding device, for example, a punch card or a recessed structure in which a command is stored thereon, and any suitable The combination.
  • RAM random access memory
  • ROM read only memory
  • EPROM or flash erasable programmable read only memory
  • SRAM static random access memory
  • CD-ROM compact disc
  • DVD digital versatile disc
  • memory stick floppy disk
  • mechanical encoding device for example, a punch card or a recessed structure in which a command is stored thereon, and any suitable The combination.
  • a computer readable storage medium as used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (eg, a light pulse through a fiber optic cable), or through a wire The electrical signal transmitted.
  • the computer readable program instructions described herein can be downloaded from a computer readable storage medium to various computing/processing devices or downloaded to an external computer or external storage device over a network, such as the Internet, a local area network, a wide area network, and/or a wireless network.
  • the network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and/or edge servers.
  • a network adapter card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in each computing/processing device .
  • Computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine related instructions, microcode, firmware instructions, state setting data, or in one or more programming languages.
  • Source code or object code written in any combination including object oriented programming languages such as Smalltalk, C++, etc., as well as conventional procedural programming languages such as the "C" language or similar programming languages.
  • the computer readable program instructions can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer, partly on the remote computer, or entirely on the remote computer or server. carried out.
  • the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or wide area network (WAN), or can be connected to an external computer (eg, using an Internet service provider to access the Internet) connection).
  • the customized electronic circuit such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), can be customized by utilizing state information of computer readable program instructions.
  • Computer readable program instructions are executed to implement various aspects of the present disclosure.
  • the computer readable program instructions can be provided to a general purpose computer, a special purpose computer, or a processor of other programmable data processing apparatus to produce a machine such that when executed by a processor of a computer or other programmable data processing apparatus Means for implementing the functions/acts specified in one or more of the blocks of the flowcharts and/or block diagrams.
  • the computer readable program instructions can also be stored in a computer readable storage medium that causes the computer, programmable data processing device, and/or other device to operate in a particular manner, such that the computer readable medium storing the instructions includes An article of manufacture that includes instructions for implementing various aspects of the functions/acts recited in one or more of the flowcharts.
  • the computer readable program instructions can also be loaded onto a computer, other programmable data processing device, or other device to perform a series of operational steps on a computer, other programmable data processing device or other device to produce a computer-implemented process.
  • instructions executed on a computer, other programmable data processing apparatus, or other device implement the functions/acts recited in one or more of the flowcharts and/or block diagrams.
  • each block in the flowchart or block diagram can represent a module, a program segment, or a portion of an instruction that includes one or more components for implementing the specified logical functions.
  • Executable instructions can also occur in a different order than those illustrated in the drawings. For example, two consecutive blocks may be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts can be implemented in a dedicated hardware-based system that performs the specified function or action. Or it can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are equivalent.

Abstract

一种头戴显示设备的控制方法、设备和系统。控制方法包括：在一个帧时段的第一时段，控制至少一个遮光板（3）处于关闭状态以阻止来自一个LCD显示屏（2）的光线入射到透镜模组（1）；在帧时段的第二时段，控制至少一个遮光板处于打开状态以使来自一个显示屏的光线入射到透镜模组；其中，第一时段与第二时段之和等于帧时段、且第二时段在第一时段之后。这种控制方法有效降低头戴显示设备的拖影现象。

Description

头戴显示设备的控制方法、设备和系统 技术领域
本公开涉及显示技术领域，更具体地，涉及一种头戴显示设备的控制方法、一种头戴显示设备及一种头戴显示系统。
背景技术
头戴显示设备例如是头戴虚拟现实显示设备或头戴增强现实显示设备。传统头戴显示设备一般采用液晶显示屏(LCD显示屏)。由于LCD显示屏的响应时间较长，也就是LCD显示屏的每一帧画面的扫描的时间比较长，对应每一帧画面的保持时间比较短，当帧频比较高时，会产生严重的拖影现象。特别是对于头戴显示设备，对其分辨率的要求更高，而且对帧频的要求也更高，每一帧画面的保持时间更短，拖影现象更加明显。
发明内容
本公开的一个目的是提供一种头戴显示设备的控制方法的新技术方案。
根据本公开的第一方面，提供了一种头戴显示设备的控制方法，所述头戴显示设备包括透镜模组、至少一个遮光板以及至少一个LCD显示屏，所述至少一个遮光板位于所述透镜模组与所述至少一个LCD显示屏之间；所述控制方法包括：在一个帧时段的第一时段，控制所述至少一个遮光板处于关闭状态以阻止来自至少一个所述LCD显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述至少一个遮光板处于打开状态以使来自至少一个所述显示屏的光线入射到所述透镜模组；其中，所述第一时段与所述第二时段之和等于所述帧时段、且所述第二时段在所述第一时段之后。
可选地，所述透镜模组包括透镜支架以及设置在所述透镜支架上的左 透镜和右透镜；所述至少一个遮光板固定在所述透镜支架上。
可选地，所述遮光板为液晶遮光片，所述液晶遮光片包括相对设置的第一基板和第二基板以及位于所述第一基板和所述第二基板之间的液晶层。
可选地，在所述第二时段内，所述LCD显示屏的液晶分子处于稳定状态。
可选地，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏为一个；所述控制方法包括：所述帧时段对应左眼图像；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；所述帧时段对应右眼图像；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组。
可选地，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏包括对应左透镜的左显示屏和对应右透镜的右显示屏；所述控制方法包括：所述帧时段对应左眼图像；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述左显示屏和所述右显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述左显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述右显示屏的光线入射到所述透镜模组；所述帧时段对应右眼图像；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述右显示屏的光线入射到所述透 镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述左显示屏的光线入射到所述透镜模组。
根据本公开的第二方面，提供一种头戴显示设备，所述头戴显示设备包括透镜模组、至少一个遮光板、至少一个LCD显示屏以及控制器；所述至少一个遮光板位于所述透镜模组与所述至少一个LCD显示屏之间；所述LCD组件还包括控制器；所述控制器用于：在一个帧时段的第一时段，控制所述至少一个遮光板处于关闭状态以阻止来自至少一个所述LCD显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述至少一个遮光板处于打开状态以使来自至少一个所述显示屏的光线入射到所述透镜模组；其中，所述第一时段与所述第二时段之和等于所述帧时段、且所述第二时段在所述第一时段之后。
可选地，所述透镜模组包括透镜支架以及设置在所述透镜支架上的左透镜和右透镜；所述至少一个遮光板固定在所述透镜支架上。
可选地，所述遮光板为液晶遮光片，所述液晶遮光片包括相对设置的第一基板和第二基板以及位于所述第一基板和所述第二基板之间的液晶层。
可选地，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏为一个；所述控制器用于：所述帧时段对应左眼图像时；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；所述帧时段对应右眼图像时；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组。
可选地，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮 光板、所述LCD显示屏包括对应左透镜的左显示屏和对应右透镜的右显示屏；所述控制器用于：所述帧时段对应左眼图像时；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述左显示屏和所述右显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述左显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述右显示屏的光线入射到所述透镜模组；所述帧时段对应右眼图像时；在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述右显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述左显示屏的光线入射到所述透镜模组。
可选地，所述控制器仅用于控制所述遮光板。
根据本公开的第三方面，提供一种头戴显示设备，包括控制单元，所述控制单元进行操作以执行根据第一方面中任一项所述的方法。
根据本公开的第四方面，提供一种头戴显示系统，包括头戴显示设备和外部处理系统，所述头戴显示设备用于向用户展示外部处理系统输出的图像信息；所述外部处理系统用于向头戴显示设备输出图像信息，并且所述外部处理系统包括控制单元，所述控制单元进行操作以执行根据第一方面中任一项所述的方法。
根据本公开的一个实施例，LCD显示屏的液晶分子的翻转过程中的显示画面尽量少地透射入用户眼睛，有利于降低头戴显示设备的拖影现象。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本公开的实施例，并且连同其说明一起用于解释本公开的原理。
图1是本公开的实施例所提供的头戴显示设备的结构示意图。
图2是本公开的实施例所提供的头戴显示设备的控制方法的流程图。
图3是本公开的实施例所提供的头戴显示设备的控制方法的的例子的时序图。
图4是本公开的实施例所提供的头戴显示设备的控制方法的的另一个例子的时序图。
图5是本公开的实施例所提供的头戴显示设备的控制方法的的另一个例子的时序图。
图6是本公开的实施例所提供的液晶遮光片的结构图。
图7是本公开的另一实施例所提供的头戴显示设备的结构示意图。
图8是本公开的另一实施例所提供的头戴显示设备的结构示意图。
图9是本公开的实施例所提供的头戴显示设备的框图。
图10是本公开的另一实施例所提供的头戴显示设备的框图。
图11是本公开的实施例所提供的头戴显示设备硬件配置的框图。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
参见图1所示，本公开提供的头戴显示设备包括透镜模组1、LCD显 示屏2、遮光板3。
需要说明的是，图1中所示的各部件仅是解释性的，其中展示的各部件的尺寸关系并不作为对本公开的限定。
在图1所示的例子中，遮光板3被设置在透镜模组1与LCD显示屏2之间。在另外一些例子中，遮光板3被设置在透镜模组1之前(朝向用户一侧，图1中没有示出)。
透镜模组1包括透镜支架1A、设置在透镜支架1A上的左透镜1L和设置在透镜支架1A上的右透镜1R。遮光板3固定在透镜支架1A上。
遮光板3用于遮挡LCD显示屏2。遮光板3处于打开状态时，光线可以透过遮光板3。遮光板3处于关闭状态时，光线无法或很少能透过遮光板3。在一个具体的例子中，遮光板3例如是液晶遮光片。液晶遮光片可以在电信号的控制下在打开状态与关闭状态之间切换。
参见图2所示，本公开的一个实施例提供的头戴显示设备的控制方法。
在这个实施例中，透镜模组1分为左透镜1L和右透镜1R两个部分。左透镜1L将LCD显示屏2的左半显示区域2L的画面透射入用户左眼。右透镜1R将LCD显示屏2的右半显示区域2R的画面透射入用户右眼。LCD显示屏2同步显示左眼图像和右眼图像。
或者，在这个实施例中，透镜模组1分为左透镜1L和右透镜1R两个部分。LCD显示屏2包括独立的左显示屏2L和右显示屏2R。左透镜1L将左显示屏2L的画面透射入用户左眼，右透镜1R用于将右显示屏2R的画面透射入用户右眼。为了系统的简单化，左显示屏2L和右显示屏2R的时序同步。
该方法包括以下步骤。
在步骤11，在一个帧时段的第一时段，控制所述至少一个遮光板处于关闭状态以阻止来自至少一个所述LCD显示屏的光线入射到所述透镜模组。
在步骤12，在所述帧时段的第二时段，控制所述至少一个遮光板处于打开状态以使来自至少一个所述显示屏的光线入射到所述透镜模组。
通常一个帧时段(也可以成为一个帧周期)可划分为从第一行液晶分 子翻转到最后一行液晶分子翻转完成所需要的时间(此处定义为液晶屏画面不稳定时间T1)，和以及一个帧时段的剩余时间(此处定义为液晶屏画面稳定时间T2)。遮光板3处于关闭状态的时间定义为第一时段T_C。遮光板3处于打开状态的时间定义域第二时段T_O。
在本公开中，第一时段T_C和第二时段T_O之和为一个帧时段。第一时段T_C出现在第二时段T_O之前。
参见图3所示的例子，第一时段T_C的起点和终点分别对应液晶屏画面不稳定时间T1的起点和终点。在第一时段T_C内，控制遮光板3处于关闭状态。第二时段T_O的起点和终点分别对应液晶屏画面稳定时间T2的起点和终点。在第二时段T_O内，控制遮光板3处于打开状态。
在图4所示的例子中，不同之处在于，第二时段T_O对应液晶屏画面稳定时间T2中的一段时间。进一步保证了在第二时段T_O内，LCD显示屏的液晶分子处于稳定状态。
第二时段T_O的时长越短，则整体上用户感受到的屏幕的亮度越低。在图5所示的例子中，不同之处在于，第二时段T_O对应一个帧时段的全部液晶屏画面稳定时间T2和部分液晶屏画面不稳定时间T1。虽然第二时段T_O对应包含了部分液晶屏画面不稳定时间T1，相对于图3所示的例子，这会导致头戴显示设备的拖影现象稍有增大，但第二时段T_O的延长可以提高屏幕的亮度。
本领域技术人员可以设置第二时段T_O向后延伸，包含下一帧时段的液晶屏画面不稳定时间T1的部分时间。
以LCD显示屏的分辨率为1080*720为例进一步说明。
对应图3的例子，第一时段T_C为一个帧时段中第1行液晶分子开始翻转的时刻到第1080行液晶分子完成翻转的时刻，第二时段T_O为这个帧时段中剩余时间。
对应图4的例子，第一时段T_C为一个帧时段中第1行液晶分子开始翻转的时刻到第1080行液晶分子完成翻转之后一段时间的时刻，第二时段T_O为这个帧时段中剩余时间。
对应图5的例子，第一时段T_C为一个帧时段中第1行液晶分子开始 翻转的时刻到中间某一行(例如第1000行或者第950行等)液晶分子完成翻转的时刻，第二时段T_O为这个帧时段中剩余时间。
本领域技术人员容易想到，第二时段T_O同样可以被设置为从当前帧的第1080行液晶分子完成翻转的时刻到下一帧的某一行(例如下一帧的第5行)液晶分子完成翻转的时刻，等等。在图3、图4及图5所示的例子中，LCD显示屏2的液晶分子的翻转过程中的画面并不会透射入用户眼睛中，或者LCD显示屏2的液晶分子的翻转过程中的画面尽量少地透射入用户眼睛中。透射入用户眼睛的画面为LCD显示屏的液晶分子处于稳定状态下的画面，或者透射入用户眼睛的画面尽量为LCD显示屏的液晶分子处于稳定状态下的画面。由此，有效地降低了头戴显示设备的拖影现象。
参见图6所示的遮光板3，在这个例子中，遮光板3具体为液晶遮光片。该液晶遮光片包括第一基板31、第二基板32、设置在第一基板31与第二基板32之间的液晶层33。
第一基板31和第二基板32均为透明基板，例如玻璃基板或塑料基板。
液晶层33的材料例如是负性染料液晶。
负性染料液晶为混有二色性染料的负性液晶。当该负性液晶的长轴垂直于第一基板31或第二基板32的情况下，液晶遮光板的透过率非常高。当该负性液晶的长轴平行于第一基板31或第二基板32的情况下，液晶遮光板的透过率非常低。
图6中还示出了第一基板31朝向液晶层33的一面上依次设置的第一透明电极层34和第一定向膜35，以及示出了第二基板32朝向液晶层33的一面上依次设置的第二透明电极层36和第二定向膜37。
通过在第一透明电极层34与第二透明电机层36之间施加不同的电压，控制液晶层33中的液晶分子处于不同状态，进而控制透过该液晶遮光片的光线的强度。
本公开所提供的头戴显示设备的控制方法的另一实施例所基于的结构参见图7。
在这个实施例中的遮光板3包括2块分立的左遮光板3L和右遮光板3R。左遮光板3L对应左透镜1L，右遮光板3R对应右透镜1L。LCD显示 屏2为一块显示屏。
在这个实施例中，LCD显示屏2交替显示左眼图像和右眼图像。
左透镜1L用于将LCD显示屏2的满屏画面透射入用户的左眼。右透镜1R用于将LCD显示屏2的满屏画面透射入用于的右眼。
当LCD显示屏2显示左眼图像时，按照前述的方法控制左遮光板3L的打开与关闭，并且控制右遮光板3R处于关闭状态。
这样，当LCD显示屏2显示左眼图像时，来自LCD显示屏2的光线不会入射到右透镜1R，仅用户的左眼能看到LCD显示屏2显示的左眼图像。这样左眼看到的显示画面的拖影现象得到抑制。
当LCD显示屏2显示右眼图像时，按照前述的方法控制右遮光板3R的打开与关闭，并且控制左遮光板处于关闭状态。
这样，当LCD显示屏2显示右眼图像时，来自LCD显示屏2的光线不会入射到左透镜1L，仅用户的右眼能看到LCD显示屏2显示的右眼图像。这样右眼看到的显示画面的拖影现象得到抑制。
进一步地，在这个例子中，由于用户的左眼或右眼看到的均是满屏的显示画面，扩大了画面的视场角。
基于图7所示的结构，本公开还提供的头戴显示设备的另一种控制方法的实施例。
在这个实施例中的遮光板3包括2块分立的左遮光板3L和右遮光板3R。左遮光板3L对应左透镜1L，右遮光板3R对应右透镜1L。LCD显示屏2为一块显示屏。
在这个实施例中，LCD显示屏2交替显示左眼图像和右眼图像。
左透镜1L用于将LCD显示屏2的满屏画面透射入用户的左眼。右透镜1R用于将LCD显示屏2的满屏画面透射入用于的右眼。
当LCD显示屏2显示左眼图像时，始终控制左遮光板3L处于打开状态，并且控制右遮光板3R处于关闭状态。
当LCD显示屏2显示右眼图像时，始终控制右遮光板3R的处于打开状态，并且控制左遮光板处于关闭状态。
在这个例子中，由于用户的左眼或右眼看到的均是满屏的显示画面， 扩大了画面的视场角。虽然用户看到的每一帧左眼画面和每一帧右眼画面的拖影现象没有得到抑制，但是整体的画面亮度并没有受到损失。
需要说明的是,在这个实施例中的LCD显示屏可以被替换为其他类型的显示屏，例如OLED显示屏等，均可以达到扩大视场角的技术效果。
本公开提供的头戴显示设备的控制方法的另一个实施例所基于的结构参见图8。
在这个实施例中的遮光板3包括2块分立的左遮光板3L和右遮光板3R。左遮光板3L对应左透镜1L，右遮光板3R对应右透镜3L。LCD显示屏2为2块显示屏：左显示屏2L和右显示屏2R。
在这个实施例中，左显示屏2L显示左眼图像和右显示屏2R显示右眼图像交替进行。
左透镜1L用于将左显示屏2L的满屏画面透射入用户的左眼。右透镜1R用于将右显示屏2R的满屏画面透射入用于的右眼。
当左显示屏2L显示左眼图像时，按照前述的方法控制左遮光板3L的打开与关闭，并且控制右遮光板3R处于关闭状态。
这样，当左显示屏2L显示左眼图像时，不会有来自右显示屏2R的光线入射到右透镜1R，仅用户的左眼能看到左显示屏2L显示的左眼图像。这样左眼看到的显示画面的拖影现象得到抑制。
当右显示屏2R显示右眼图像时，按照前述的方法控制右遮光板3R的开关与关闭，并且控制左遮光板处于关闭状态。
这样，当右显示屏2R显示右眼图像时，不会有来自左显示屏2L的光线入射到左透镜1L,仅用户的右眼能看到右显示屏2R显示的右眼图像。这样右眼看到的显示画面的拖影现象得到抑制。
本公开还提供一种头戴显示设备，参见图9所示。相对于图1所示的头戴显示设备，该头戴显示设备还包括控制器4。控制器4被设置为按照前述的方法控制遮光板3的打开与关闭。在这个例子中，控制器4向LCD显示屏2输出显示数据，并且控制遮光板3的打开与关闭。
参见图10所示的另一个例子，相较于图9所示的例子，还包括显示数据输出模块5。显示数据输出模块5例如是整个头戴显示设备的核心处 理器，其向LCD显示屏2输出显示数据。控制器4仅用于控制遮光板3的打开与关闭。
LCD显示屏2显示画面的每一帧的时序是固定不变的。因此，只需要显示数据输出模块5为控制器4提供一个同步信号，控制器4在这个同步信号的作用下按照帧周期计时，控制器4便可以按照前述的方法控制遮光板3的打开与关闭。
在这个例子中，向LCD显示屏2输出显示数据和控制遮光板3的打开与关闭由两个模块负责实施，降低了各个模块的复杂度。
图11示出了一些实施例中头戴显示设备100的内部配置结构示意图。
显示单元101可以包括显示面板，显示面板设置在头戴显示设备100上面向用户面部的侧表面，应用于本公开，显示单元101包括一整块LCD显示屏。或者显示单元101包括两块LCD显示屏，分别显示左眼图像和右眼图像。当然，显示单元101还包括为上述LCD显示屏提供背光的背光源。
虚拟图像光学单元102以放大方式拍摄显示单元101所显示的图像，并允许用户按放大的虚拟图像观察所显示的图像。作为输出到显示单元101上的显示图像，可以是从内容再现设备(蓝光光碟或DVD播放器)或流媒体服务器提供的虚拟场景的图像、或者使用外部相机110拍摄的现实场景的图像。一些实施例中，虚拟图像光学单元102可以包括透镜单元，例如球面透镜、非球面透镜、菲涅尔透镜等。应用于本公开中，虚拟图像光学单元中包括左透镜1L和右透镜1R。
输入操作单元103包括至少一个用来执行输入操作的操作部件，例如按键、按钮、开关或者其他具有类似功能的部件，通过操作部件接收用户指令，并且向控制单元107输出指令。
状态信息获取单元104用于获取穿戴头戴显示设备100的用户的状态信息。状态信息获取单元104可以包括各种类型的传感器，用于自身检测状态信息，并可以通过通信单元105从外部设备(例如智能手机、腕表和用户穿戴的其它多功能终端)获取状态信息。状态信息获取单元104可以获取用户的头部的位置信息和/或姿态信息。状态信息获取单元104可以包括摄像头、6轴传感器、9轴传感器、陀螺仪传感器、加速度传感器、全球定位系统(GPS)传感器、 地磁传感器、多普勒效应传感器、红外传感器、射频场强度传感器中的一个或者多个。此外，状态信息获取单元104获取穿戴头戴显示设备100的用户的状态信息，例如获取用户在当前画面的注视的位置、用户的操作状态(用户是否穿戴头戴显示设备100)、用户的动作状态(诸如静止、行走、跑动和诸如此类的移动状态，手或指尖的姿势、眼睛的开或闭状态、视线方向、瞳孔尺寸)、精神状态(用户是否沉浸在观察所显示的图像以及诸如此类的)，甚至生理状态。
通信单元105执行与外部装置的通信处理、调制和解调处理、以及通信信号的编码和解码处理。另外，控制单元107可以从通信单元105向外部装置发送传输数据。通信方式可以是有线或者无线形式，例如移动高清链接(MHL)或通用串行总线(USB)、高清多媒体接口(HDMI)、无线保真(Wi-Fi)、蓝牙通信或低功耗蓝牙通信，以及IEEE802.11s标准的网状网络等。另外，通信单元105可以是根据宽带码分多址(W-CDMA)、长期演进(LTE)和类似标准操作的蜂窝无线收发器。
头戴显示设备100还可以包括存储单元，存储单元106是配置为具有固态驱动器(SSD)等的大容量存储设备。一些实施例中，存储单元106可以存储应用程序或各种类型的数据。例如，用户使用头戴显示设备100观看的内容可以存储在存储单元106中。
头戴显示设备100还可以包括控制单元107，控制单元107可以包括计算机处理单元(CPU)或者其他具有类似功能的设备。一些实施例中，控制单元107可以用于执行存储单元106存储的指令，该指令被执行时用以实现前述各实施例提供的方法或者控制单元107还可以包括用于执行本申请一些实施例公开的方法、功能和操作的电路。
图像处理单元108用于执行信号处理，比如与从控制单元107输出的图像信号相关的图像质量校正，以及将其分辨率转换为根据显示单元101的屏幕的分辨率。然后，显示驱动单元109依次选择显示单元101的每行像素，并逐行依次扫描显示单元101的每行像素，因而提供基于经信号处理的图像信号的像素信号。
一些实施例中，头戴显示设备100还可以包括外部相机。外部相机110 可以设置在头戴显示设备100主体前表面，外部相机110可以为一个或者多个。外部相机110可以获取三维信息，并且也可以用作距离传感器。另外，探测来自物体的反射信号的位置灵敏探测器(PSD)或者其他类型的距离传感器可以与外部相机110一起使用。外部相机110和距离传感器可以用于检测穿戴头戴显示设备100的用户的身体位置、姿态和形状。另外，一定条件下用户可以通过外部相机110直接观看或者预览现实场景。
一些实施例中，头戴显示设备100还可以包括声音处理单元，声音处理单元111可以执行从控制单元107输出的声音信号的声音质量校正或声音放大，以及输入声音信号的信号处理等。然后，声音输入/输出单元112在声音处理后向外部输出声音以及输入来自麦克风的声音。
需要说明的是，图11中虚线框示出的结构或部件可以独立于头戴显示设备100之外，例如可以设置在外部处理系统(例如计算机系统或分体式头戴显示设备的主机、手柄等)中与头戴显示设备100配合使用；或者，虚线框示出的结构或部件可以设置在头戴显示设备100内部或者表面上。前一种情况下，头戴显示设备100与所述外部处理系统构成头戴显示系统。此时，外部处理系统可以包括控制单元，该控制单元用于执行上述任一实施例所提到的方法，该外部处理系统输出图像信息至头戴显示设备，头戴显示设备可以用于向用户展示外部处理系统输出的图像信息。
图11中，控制电源107与遮光板3的连接并未示出。控制单元107控制遮光板3的打开与关闭。在一些实施例中，遮光板3为一整块遮光板，同时遮挡左透镜1L和右透镜1R。在另一些实施例中，遮光板3分为左遮光板3L和右遮光板3R，分别遮挡左透镜1L和右透镜1R。
本公开可以是系统、方法和/或计算机程序产品。计算机程序产品可以包括计算机可读存储介质，其上载有用于使处理器实现本公开的各个方面的计算机可读程序指令。
计算机可读存储介质可以是可以保持和存储由指令执行设备使用的指令的有形设备。计算机可读存储介质例如可以是――但不限于――电存储设备、磁存储设备、光存储设备、电磁存储设备、半导体存储设备或者上述的任意合适的组合。计算机可读存储介质的更具体的例子(非穷举的 列表)包括：便携式计算机盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、静态随机存取存储器(SRAM)、便携式压缩盘只读存储器(CD-ROM)、数字多功能盘(DVD)、记忆棒、软盘、机械编码设备、例如其上存储有指令的打孔卡或凹槽内凸起结构、以及上述的任意合适的组合。这里所使用的计算机可读存储介质不被解释为瞬时信号本身，诸如无线电波或者其他自由传播的电磁波、通过波导或其他传输媒介传播的电磁波(例如，通过光纤电缆的光脉冲)、或者通过电线传输的电信号。
这里所描述的计算机可读程序指令可以从计算机可读存储介质下载到各个计算/处理设备，或者通过网络、例如因特网、局域网、广域网和/或无线网下载到外部计算机或外部存储设备。网络可以包括铜传输电缆、光纤传输、无线传输、路由器、防火墙、交换机、网关计算机和/或边缘服务器。每个计算/处理设备中的网络适配卡或者网络接口从网络接收计算机可读程序指令，并转发该计算机可读程序指令，以供存储在各个计算/处理设备中的计算机可读存储介质中。
用于执行本公开操作的计算机程序指令可以是汇编指令、指令集架构(ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码，所述编程语言包括面向对象的编程语言—诸如Smalltalk、C++等，以及常规的过程式编程语言—诸如“C”语言或类似的编程语言。计算机可读程序指令可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络—包括局域网(LAN)或广域网(WAN)—连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。在一些实施例中，通过利用计算机可读程序指令的状态信息来个性化定制电子电路，例如可编程逻辑电路、现场可编程门阵列(FPGA)或可编程逻辑阵列(PLA)，该电子电路可以执行计算机可读程序指令，从而实现本公开的各个方面。
这里参照根据本公开实施例的方法、装置(系统)和计算机程序产品的流程图和/或框图描述了本公开的各个方面。应当理解，流程图和/或框图的每个方框以及流程图和/或框图中各方框的组合，都可以由计算机可读程序指令实现。
这些计算机可读程序指令可以提供给通用计算机、专用计算机或其它可编程数据处理装置的处理器，从而生产出一种机器，使得这些指令在通过计算机或其它可编程数据处理装置的处理器执行时，产生了实现流程图和/或框图中的一个或多个方框中规定的功能/动作的装置。也可以把这些计算机可读程序指令存储在计算机可读存储介质中，这些指令使得计算机、可编程数据处理装置和/或其他设备以特定方式工作，从而，存储有指令的计算机可读介质则包括一个制造品，其包括实现流程图和/或框图中的一个或多个方框中规定的功能/动作的各个方面的指令。
也可以把计算机可读程序指令加载到计算机、其它可编程数据处理装置、或其它设备上，使得在计算机、其它可编程数据处理装置或其它设备上执行一系列操作步骤，以产生计算机实现的过程，从而使得在计算机、其它可编程数据处理装置、或其它设备上执行的指令实现流程图和/或框图中的一个或多个方框中规定的功能/动作。
附图中的流程图和框图显示了根据本公开的多个实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或指令的一部分，所述模块、程序段或指令的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。对于本领域技术人员来说公知的是，通过硬件方式实现、通过软件方式实现以及通过软件和硬件结合的方式实现都是等价的。
以上已经描述了本公开的各实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的各实施例。在不偏离所说明的各实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。本文中所用术语的选择，旨在最好地解释各实施例的原理、实际应用或对市场中的技术的技术改进，或者使本技术领域的其它普通技术人员能理解本文披露的各实施例。本公开的范围由所附权利要求来限定。

Claims (14)

  1. 一种头戴显示设备的控制方法，其特征在于，所述头戴显示设备包括透镜模组、至少一个遮光板以及至少一个LCD显示屏，所述至少一个遮光板位于所述透镜模组与所述至少一个LCD显示屏之间；所述控制方法包括：
    在一个帧时段的第一时段，控制所述至少一个遮光板处于关闭状态以阻止来自至少一个所述LCD显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述至少一个遮光板处于打开状态以使来自至少一个所述显示屏的光线入射到所述透镜模组；
    其中，所述第一时段与所述第二时段之和等于所述帧时段、且所述第二时段在所述第一时段之后。
  2. 根据权利要求1所述的控制方法，其特征在于，所述透镜模组包括透镜支架以及设置在所述透镜支架上的左透镜和右透镜；所述至少一个遮光板固定在所述透镜支架上。
  3. 根据权利要求1所述的控制方法，其特征在于，所述遮光板为液晶遮光片，所述液晶遮光片包括相对设置的第一基板和第二基板以及位于所述第一基板和所述第二基板之间的液晶层。
  4. 根据权利要求1所述的控制方法，其特征在于，
    在所述第二时段内，所述LCD显示屏的液晶分子处于稳定状态。
  5. 根据权利要求1-4任一项所述的控制方法，其特征在于，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏为一个；所述控制方法包括：
    所述帧时段对应左眼图像；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    所述帧时段对应右眼图像；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组。
  6. 根据权利要求1-4任一项所述的控制方法，其特征在于，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏包括对应左透镜的左显示屏和对应右透镜的右显示屏；所述控制方法包括：
    所述帧时段对应左眼图像；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述左显示屏和所述右显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述左显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述右显示屏的光线入射到所述透镜模组；
    所述帧时段对应右眼图像；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述右显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述左显示屏的光线入射到所述透镜模组。
  7. 一种头戴显示设备，其特征在于，所述头戴显示设备包括透镜模组、至少一个遮光板、至少一个LCD显示屏以及控制器；
    所述至少一个遮光板位于所述透镜模组与所述至少一个LCD显示屏之间；所述LCD组件还包括控制器；所述控制器用于：
    在一个帧时段的第一时段，控制所述至少一个遮光板处于关闭状态以阻止来自至少一个所述LCD显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述至少一个遮光板处于打开状态以使来自至少一个所述显示屏的光线入射到所述透镜模组；
    其中，所述第一时段与所述第二时段之和等于所述帧时段、且所述第二时段在所述第一时段之后。
  8. 根据权利要求7所述的头戴显示设备，其特征在于，所述透镜模组包括透镜支架以及设置在所述透镜支架上的左透镜和右透镜；所述至少一个遮光板固定在所述透镜支架上。
  9. 根据权利要求7所述的头戴显示设备，其特征在于，所述遮光板为液晶遮光片，所述液晶遮光片包括相对设置的第一基板和第二基板以及位于所述第一基板和所述第二基板之间的液晶层。
  10. 根据权利要求7-9任一项所述的头戴显示设备，其特征在于，
    所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏为一个；所述控制器用于：
    所述帧时段对应左眼图像时；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    所述帧时段对应右眼图像时；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组。
  11. 根据权利要求7-9任一项所述的头戴显示设备，其特征在于，所述遮光板包括对应左透镜的左遮光板和对应右透镜的右遮光板、所述LCD显示屏包括对应左透镜的左显示屏和对应右透镜的右显示屏；所述控制器用于：
    所述帧时段对应左眼图像时；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述左显示屏和所述右显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述左遮光板处于打开状态以使来自所述左显示屏的光线入射到所述透镜模组、并控制所述右遮光板处于关闭状态以阻止来自所述右显示屏的光线入射到所述透镜模组；
    所述帧时段对应右眼图像时；
    在所述帧时段的第一时段，控制所述左遮光板和所述右遮光板处于关闭状态以阻止来自所述显示屏的光线入射到所述透镜模组；
    在所述帧时段的第二时段，控制所述右遮光板处于打开状态以使来自所述右显示屏的光线入射到所述透镜模组、并控制所述左遮光板处于关闭状态以阻止来自所述左显示屏的光线入射到所述透镜模组。
  12. 根据权利要求7所述的头戴显示设备，其特征在于，
    所述控制器仅用于控制所述遮光板。
  13. 一种头戴显示设备，其特征在于，包括控制单元，所述控制单元进行操作以执行根据权利要求1-6任一项所述的方法。
  14. 一种头戴显示系统，包括头戴显示设备和外部处理系统，其特征在于，
    所述头戴显示设备用于向用户展示外部处理系统输出的图像信息；
    所述外部处理系统用于向头戴显示设备输出图像信息，并且
    所述外部处理系统包括控制单元，所述控制单元进行操作以执行根据权利要求1-6任一项所述的方法。
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