WO2018090843A1 - 投影显示设备 - Google Patents
投影显示设备 Download PDFInfo
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- WO2018090843A1 WO2018090843A1 PCT/CN2017/109314 CN2017109314W WO2018090843A1 WO 2018090843 A1 WO2018090843 A1 WO 2018090843A1 CN 2017109314 W CN2017109314 W CN 2017109314W WO 2018090843 A1 WO2018090843 A1 WO 2018090843A1
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- Prior art keywords
- light
- image
- source
- light source
- control device
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Classifications
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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
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
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- 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
- G03B21/14—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
Definitions
- the present invention relates to the field of projection display, and in particular, to a projection display device.
- the projection display device projects the video image signal input by the external device or the video image signal transmitted by the network into a corresponding image; or the projection display device projects and displays the corresponding image based on the image data stored in the local storage device.
- Spatial light modulators play an important role in the projection of a display image by a projection display device.
- the spatial light modulator modulates the light of the source into image light for forming an image, and the proportion of the image light to the light of the light source depends on the image data on which the spatial light modulator is modulated, and is generally formed during the image modulation process.
- Non-image light other than image light. If the non-image light is not absorbed, it may be repeatedly reflected and then emitted from the projection lens, which affects the contrast of the image.
- a light absorbing element is provided to absorb the non-image light.
- the long-term use of the light absorbing element deteriorates, the light absorption decreases, and it needs to be replaced periodically, resulting in high maintenance costs.
- a projection display apparatus comprising a light source, a control device, a spatial light modulator, a projection lens, and a light absorbing element, wherein:
- the light source is used to emit light source light, and the light source light comprises three primary color light sources;
- control device is configured to send a driving signal to the spatial light modulator
- the spatial light modulator is configured to modulate the light source light according to the driving signal to form image light and non-image light, the image light is output to the projection lens, and the non-image light is output to the Absorbing element [0009] the projection lens is used to project the image light to form an image;
- the light absorbing element is configured to absorb the non-image light
- control device controls the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period.
- one or two primary color light sources are turned off in one frame image modulation period, and the output can be reduced relative to the case where the light of any one of the primary color light sources is not turned off.
- Non-image light to the light absorbing element thereby extending the life of the light absorbing element and reducing the maintenance cost of the projection display device.
- the light source comprises:
- a first light source for emitting light of the first primary color source
- a second light source for emitting light of the second primary color source
- a third light source for emitting light of the third primary color source
- the step of controlling the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period comprises: modulating in a color image frame During the period, the control device controls to turn off any one or any two of the first light source, the second light source, and the third light source;
- the light source that is not turned off among the first light source, the second light source, and the third light source continuously emits light during a color image frame modulation period.
- the light source comprises:
- a first light source for emitting light of the first primary color source
- a second light source for emitting light of the second primary color source
- a third light source for emitting light of the third primary color source
- a color image frame modulation period is divided into three types of inter-segment segments that are connected to each other and do not overlap each other: a first type of inter-turn segment for the first light source to emit light, and a second type of diurnal region for the second light source to emit light. a segment and a third type of inter-turn segment for illuminating the third source;
- the step of controlling the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period comprises: modulating in a color image frame During the period, the control device controls to turn off any one of the first light source, the second light source, and the third light source or any two of the light sources in the corresponding inter-segment segments of the three types of inter-segment segments.
- a color image frame modulation period is divided into three types of inter-frames that are connected to each other and do not overlap each other. Segment: the first type of inter-segment, the second type of inter-segment and the third type of inter-segment;
- the light source is configured to emit light of a first primary color source in the first type of inter-segment, a second primary light source in the second inter-segment, and between the third Transmitting a third primary color source light in the segment; [0023] controlling, in a color image frame modulation period, the light source to turn off any one of the three primary color source lights or any two of the primary color source lights
- the steps include:
- control device turns off the light source in any one or any two of the three types of inter-segment segments.
- the control device sends a driving signal to the spatial light modulator, such that the spatial light modulator modulates the sum of image light formed by the light source light
- the non-image light satisfies the following relationship: the ratio of the image light to the light source light is greater than the proportion of the non-image light to the light source light, to form an information prompt image of a bright background to reduce output to the light absorbing element Light.
- control device in the external image source playing mode, sends a driving signal to the spatial light modulator according to the image signal received by the signal receiving interface to form a corresponding image signal.
- the image signal acquisition abnormality includes: in the external image source display mode, the signal receiving interface does not receive an image signal or when the image signal receiving of the signal receiving interface is in a buffer state.
- the control device in the local image source display mode, the control device generates an image signal according to the locally stored image data to be displayed, and sends the image signal to the spatial light modulator according to the generated image signal. Driving a signal to form an image corresponding to the generated image signal;
- the image signal acquisition abnormality includes: in the local image source display mode, an abnormality occurs in a process of generating an image signal according to locally stored image data to be displayed.
- a projection display device comprising a light source, a control device, a spatial light modulator, a projection lens and a light absorbing element, wherein:
- the light source is used to emit light from the source
- control device is configured to send a driving signal to the spatial light modulator;
- spatial light modulator is configured to modulate the light source light according to the driving signal to form image light and non-image light, the image light is output to the projection lens, and the non-image light is output to the Absorbing element
- the projection lens is used to project the image light to form an image
- the light absorbing element is configured to absorb the non-image light
- control device is further configured to control the light source to be turned on and off according to a preset frequency, so that a frame rate of an image formed by the image light projected by the projection lens is smaller than an image signal acquisition normal condition.
- the image below shows the frame rate.
- the light source is turned off in some inter-turns, so that the frame rate of the image formed by the image light projected by the projection lens is smaller than the image display frame rate under normal image signal acquisition, and the image is reduced on the other hand.
- the output of light also reduces the output of non-image light, thereby reducing non-image light output to the light absorbing element, extending the useful life of the light absorbing element and reducing the maintenance cost of the projection display device.
- the control device sends a driving signal to the spatial light modulator, such that the spatial light modulator modulates the sum of image light formed by the light source light
- the non-image light satisfies the following relationship: the ratio of the image light to the light source light is greater than the proportion of the non-image light to the light source light, to form an information prompt image of a bright background to reduce output to the light absorbing element Light.
- control device in the external image source playing mode, sends a driving signal to the spatial light modulator according to the image signal received by the signal receiving interface to form a corresponding image signal.
- the image signal acquisition abnormality includes: in the external image source display mode, the signal receiving interface does not receive an image signal or when the image signal receiving of the signal receiving interface is in a buffer state.
- the control device in the local image source display mode, the control device generates an image signal according to the locally stored image data to be displayed, and sends the image signal to the spatial light modulator according to the generated image signal. Driving a signal to form an image corresponding to the generated image signal;
- the image signal acquisition abnormality includes: in the local image source display mode, according to the to-be-displayed The process of generating image signals from locally stored image data is abnormal.
- a projection display device comprising a light source, a control device, a spatial light modulator, a projection lens and a light absorbing element, wherein:
- the light source is used to emit light from the source
- control device is configured to send a driving signal to the spatial light modulator
- the spatial light modulator is configured to modulate the light source light according to the driving signal to form image light and non-image light, the image light is output to the projection lens, and the non-image light is output to the Absorbing element
- the projection lens is configured to project the image light to form an image
- the light absorbing element is configured to absorb the non-image light
- the control device sends a drive signal to the spatial light modulator such that the spatial light modulator modulates the
- the image light and the non-image light formed by the light source light satisfy the following relationship: the ratio of the image light to the light source light is greater than the proportion of the non-image light to the light source light to form a bright background information prompt image
- the light output to the light absorbing element is reduced.
- the above-mentioned projection display device outputs an information prompt image of a bright background in the case where the image signal is abnormally acquired or in the standby mode, so that the non-image light output to the light absorbing element is less, and the information prompt is output with respect to the output dark background.
- the life of the light absorbing element can be extended, thereby reducing the maintenance cost of the projection display device.
- the control device in the external image source playing mode, sends a driving signal to the spatial light modulator according to the image signal received by the signal receiving interface to form a corresponding image signal.
- the image signal acquisition abnormality includes: in the external image source display mode, the signal receiving interface does not receive an image signal or when the image signal receiving of the signal receiving interface is in a buffer state.
- the control device in the local image source display mode, the control device generates an image signal according to the locally stored image data to be displayed, and modulates the spatial light according to the generated image signal. Transmitting a driving signal to form an image corresponding to the generated image signal;
- the image signal acquisition abnormality includes: in the local image source display mode, an abnormality occurs in a process of generating an image signal according to locally stored image data to be displayed.
- the information background image of the bright background includes a standby image of a bright background; in the standby mode, the control device is configured to exceed the length of the segment in which the input command is not detected. Threshold value
- the information indicating image of the bright background comprises: a menu interface image of a bright background; in the standby mode, the control device is configured to send a driving signal to the spatial light modulator after detecting an input command And causing the spatial light modulator to modulate the source light to form a bright background menu interface image corresponding to the detected input command.
- the light source light emitted by the light source includes three primary color light sources
- control device controls the light source to turn off any one of the three primary color source lights or any two of the primary color light sources during a frame image modulation period Light
- the light source comprises:
- a first light source for emitting light of the first primary color source, a second light source for emitting light of the second primary color source, and a third light source for emitting light of the third primary color source;
- the step of controlling the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period includes: modulating in a color image frame During the period, the control device controls to turn off any one or any two of the first light source, the second light source, and the third light source;
- the light source that is not turned off among the first light source, the second light source, and the third light source continuously emits light during a color image frame modulation period.
- the light source comprises:
- a color image frame modulation period is divided into three types of inter-segment segments that are connected to each other and do not overlap each other: a first type of inter-turn segment for illuminating the first light source, and a second type of diurnal region for illuminating the second light source. a segment and a third type of inter-turn segment for illuminating the third source;
- the step of controlling the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period comprises: modulating a color image frame During the period, the control device controls to turn off any one of the first light source, the second light source, and the third light source or any two of the light sources in the corresponding inter-segment segments of the three types of inter-segment segments.
- a color image frame modulation period is divided into three types of inter-segment segments that are connected to each other and do not overlap: a first type of inter-segment segment, a second type of inter-segment segment, and a third type of inter-segment segment ;
- the light source is configured to emit light of a first primary color source in the first type of inter-segment, a second primary light source in the second inter-segment, and between the third a third primary color source light is emitted in the segment;
- the control device controls the light source to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period
- the steps include:
- control device turns off the light source in any one or any two of the three types of inter-segment segments.
- control device in the case that the image signal is acquired abnormally, is further configured to control the frame rate of the image formed by the image light projected by the projection lens to be turned on and off according to a preset frequency.
- the image display frame rate is smaller than the image signal acquisition under normal conditions.
- FIG. 1 is a view
- FIG. 2 shows a flow chart of the control of the light source 10 by the control device 60 in one embodiment.
- FIG 3 shows a flow chart of the control of the light source 10 by the control device 60 in one embodiment.
- FIG 4 shows a flow chart of the control of the spatial light modulator 30 by the control device 60 in one embodiment.
- FIG. 5 is a flow chart showing the control of the spatial light modulator 30 by the control device 60 in an embodiment
- FIG. 6 shows a flow diagram of the control of the spatial light modulator 30 by the control device 60 in one embodiment.
- a projection display device includes a light source 10, a relay system 20, a spatial light modulator 30, a projection lens 40, a light absorbing element 50 and a control device 60, a signal receiving interface 70, and a storage device. 80. among them:
- the light source 10 emits a light beam (hereinafter referred to as light source light).
- the light source 10 is turned on and off by the control device 60.
- the relay system 20 condenses the light source light toward the spatial light modulator 30; the spatial light modulator operates under the control of the control device 60, and the light source condensed to the spatial light modulator 30 operates under the operation of the spatial light modulator 30.
- Image light and non-image light are formed.
- the spatial light modulator 30 is a DMD (Digital Micromirror Device), and the DMD is composed of a digital micromirror array, each of which constitutes a modulation unit, and a modulation unit for modulating an image corresponding to one pixel.
- Each micromirror is flipped under the drive of a drive signal.
- the flipped micromirror reflects the source light to form image light and non-image light.
- the number of times the micromirrors are flipped is determined by the drive signal, and the number of flips determines the ratio of the formed image light to the non-image light.
- the image light is output to the projection lens 40; the non-image light is output to the light absorbing element 50.
- Projection lens 40 projects image light to form an image; light absorbing element 50 absorbs at least a portion of the non-image light.
- the light absorbing element 50 may be disposed on the inner wall of the housing of the projection display device, or the light absorbing element 50 may be disposed on the outgoing light path of the non-image light emitted from the spatial light modulator 30.
- the control device 60 includes a controller 602, a light source driving circuit 604, an image converting portion 606, a display encoder 608, a display driver 610, and an image decompressing portion 612.
- the controller 602 is responsible for the light source driving circuit 604 and the image converting portion 606.
- the operation control of each circuit such as the display encoder 608, the display driver 610, and the image decompressing unit 612, the controller 602, the light source driving circuit 604, the image converting portion 606, the display encoder 608, the display driver 610, and the image decompressing portion 612 are each Data communication between circuits via system bus SB
- the light source driving circuit 604 is used to drive the turning on and off of the light source 10.
- the signal receiving interface 70 receives an image signal transmitted by the external device, or The signal receiving interface 70 receives an image signal transmitted by the network side.
- the control device 60 issues a drive signal to the spatial light modulator 30 in accordance with the image signal received by the signal receiving interface to form an image corresponding to the received image signal.
- the image signal is converted by the image conversion unit 606 in a format suitable for display, and further output to the display encoder 608.
- the display encoder 608 generates a video signal based on the input image signal and outputs it to the display driver 610; the display driver 610 generates a drive signal based on the video signal to drive the spatial light modulator 30.
- the external image source playing mode may be initiated by the control device 60 after receiving the preset input command, and the input command may be received by the command receiving portion (not shown); or, the external image source playing mode may also be The control device 60 activates the signal data line for transmitting the image signal after the input connection portion (not shown) is inserted.
- the control device 60 In the local image source display mode, the control device 60 generates an image signal according to the locally stored image data to be displayed, and sends a driving signal to the spatial light modulator 30 according to the generated image signal to form a generated image signal correspondingly. Image.
- the image decompressing section 612 reads and decompresses the image data stored in the storage device 80, and transmits the decompressed image data to the image converting section 606.
- the storage device 80 may be a detachable memory card or a removable hard disk, or may be another form of storage device or the like.
- the image converting portion 606 further generates an image signal based on the image data and in accordance with a format suitable for display, and further outputs the image signal to the display encoder 608.
- the display encoder 608 generates a video signal based on the input image signal and outputs it to the display driver 610; the display driver 610 generates a drive signal based on the video signal to drive the spatial light modulator 30.
- the local image source display mode may be initiated by control device 60 upon receipt of a predetermined input command, which may be received by an instruction receiving portion (not shown). For example, after receiving an instruction to play a locally stored video, or after receiving an instruction to play a locally stored PPT, or after receiving an instruction to play an album, etc., the control device 60 activates the local image source display mode.
- the signal receiving interface 70 does not receive the image signal, and belongs to the image signal acquisition abnormal condition.
- the image signal receiving of the signal receiving interface 70 in a buffer state, for example, the transmission rate of the image signal is slow, and the received image signal is insufficient to smoothly display the corresponding video. It belongs to the image signal to get an abnormal situation.
- the image signal received by the signal receiving interface 70 is not interrupted and the transmission speed of the image signal is fast enough (receiving the image signal according to a preset frame rate) so that the image signal can be smoothly If the corresponding video is displayed, it belongs to the image signal to obtain normal conditions.
- the control device 60 controls the spatial light modulator 30 to perform an image modulation operation to form an informational cue image for indicating no signal input. In one embodiment, when the image signal reception of the signal receiving interface 70 is in a buffered state, the control device 60 controls the spatial light modulator 30 to perform image modulation to form an informational cue image for indicating that it is being buffered.
- an abnormality occurs in the process of generating an image signal according to locally stored image data to be displayed, for example, a storage device for storing image data of the projection display device is detached The projection display device, the storage device is damaged, a data reading error occurs, and the like, and the image signal is abnormal.
- the image analysis unit 612 reads and analyzes the image signal generated by the image data stored in the storage device 80 without interruption, and the image signal is generated at a fast enough speed so that the corresponding video can be smoothly displayed ( When the image signal is generated according to the preset frame rate, it belongs to the image signal acquisition normal condition.
- the control device 60 controls the spatial light modulator 30 to perform an image modulation operation to form an information prompt for indicating an abnormality in image signal generation.
- the image for example, forms an information prompt image for indicating that the storage device has been detached, or forms an information prompt image for indicating damage of the storage device, and the like.
- the projection display device of the present invention is not limited to the structural schematic diagram shown in FIG. 1, and the projection display device may have more or fewer components.
- the structural composition of the control device 60 is not limited to FIG. 1, and the control device 60 can also be configured as other structures.
- the light source light emitted by the light source 10 includes three primary color light sources; in the case of an abnormal image signal acquisition, the control device 60 controls the light source 10 to turn off the three primary color light sources during a color image frame modulation period. Any one of the light or any two of the primary color source lights.
- the present invention "within a color image frame modulation period” does not limit the number of color image frame modulation periods, where "one” is described in units of a color image frame modulation period, rather than limiting only Control and operation are performed during a color image frame modulation cycle.
- the three primary color source lights may be, for example, red, green, and blue source light. It can be understood that the three primary color source lights can also be, for example, magenta, yellow, cyan source light, and the like. Three primary color light sources are combined according to a certain ratio Light can get white light.
- One frame of color image signals includes image frame signals corresponding to three primary colors, for example, one frame of color image signals includes: a first primary color frame signal, a second primary color frame signal, and a third primary color frame signal;
- the light source 10 emits a first primary color source light, a second primary color source light, and a third primary color source light.
- the spatial light modulator 30 operates according to a driving signal corresponding to the first primary color frame signal of the one-frame color image signal, and the first primary color source light is concentrated to the spatial light modulator 30 and in the spatial light.
- the first primary color image light and the first primary color non-image light are formed by the operation of the modulator 30; the spatial light modulator 30 operates according to the driving signal corresponding to the second primary color frame signal of the frame color image signal, and the second primary color light source Light concentrating to the spatial light modulator 30 and forming a second primary color image light and a second primary color non-image light under the action of the spatial light modulator 30; and similarly, forming a third primary color image light and a third primary color non-image Image light.
- the control device 60 controls the light source 10 to turn off any one of the three primary color source lights or any two of the primary color source lights, for example, turning off the first primary color source light and the second primary color source.
- Light in a color image frame modulation period, only forms image light and non-image light corresponding to the primary light source light. Thereby, the non-image light outputted to the light absorbing element can be reduced, the life of the light absorbing element can be prolonged, and the maintenance cost of the projection display device can be reduced.
- FIG. 2 is a flow chart showing the control of the light source 10 by the control device 60 in one embodiment.
- S202 in the external image source display mode or the local image source display mode, the control device 60 detects whether an image signal acquisition abnormality has occurred.
- S204 when an image signal acquisition error occurs, the control device 60 controls the light source 10 to turn off any one of the three primary color source lights or any two of the primary color source lights during a color image frame modulation period.
- the light source 10 includes: a first light source (not shown) for emitting light of the first primary color source, a second light source (not shown) for emitting light of the second primary color source, and a third light source (not shown) that emits light of the third primary color source.
- the projection display device has three spatial light modulators 30, and the light beams emitted by the first light source, the second light source, and the third light source are respectively condensed to one of the three spatial light modulators 30, one
- the light source corresponds to a spatial light modulator 30.
- the three light sources continuously emit light, and the three spatial light modulators 30 respectively modulate the corresponding light source lights, thereby The three primary color images are formed simultaneously and superimposed to form a visual effect of the color image.
- the control device 60 controls to turn off any one or both of the first light source, the second light source, and the third light source during a color image frame modulation period.
- a light source wherein the un-closed light source of the first light source, the second light source, and the third light source continues to emit light during a color image frame modulation period.
- the light source 10 includes: a first light source (not shown) for emitting light of the first primary color source, a second light source (not shown) for emitting light of the second primary color source, and a third light source (not shown) that emits light of the third primary color source.
- a color image frame modulation period is divided into three types of inter-segment segments that are connected to each other and do not overlap each other: a first type of inter-turn segment for the first light source to emit light, and a second type of diurnal region for the second light source to emit light. a segment and a third type of inter-turn segment for illumination of the third source.
- a color image frame modulation period can be divided into three inter-frame segments, which are: a first type of inter-segment, a second inter-segment, and a third inter-segment.
- a color image frame modulation period can be divided into six inter-segments, which are: a first type of inter-segment, a second type of inter-segment, a third type of inter-segment, a first type of inter-segment, The second type of inter-segment and the third type of inter-segment. Wait, and so on
- the two inter-segment segments that are connected back and forth do not overlap on the inter-turn axis, and there may be no space between the two inter-segment segments that are connected in the front and rear ( Seamless connection);
- the two inter-segments connected before and after may not be able to achieve a strict seamless connection, and a certain interval may be allowed between the two inter-segment segments.
- the projection display device has at least one spatial light modulator 30.
- the first primary color source light emitted by the first light source is concentrated in the first type of inter-turn region to the spatial light modulator 30, and the second light source emits
- the second primary color source light is condensed into the spatial light modulator 30 in the second type of inter-turn segment
- the third primary color source light emitted by the third source is concentrated in the third type of inter-turn segment to the spatial light modulator 30.
- the spatial light modulator 30 modulates the corresponding light source light in the first type of the inter-turn segment, the second type of the inter-turn segment, and the third type of the inter-turn segment, and sequentially forms three primary color image lights, corresponding to the three primary colors.
- the image sequence is displayed to form a video effect of a color image.
- control The device 60 controls to turn off either or both of the first source, the second source, and the third source within the corresponding inter-segment of the three types of inter-segment segments.
- the first source is turned off in the first type of inter-segment, or the second type of source is turned off in the second inter-segment, and so on.
- a color image frame modulation period is divided into three types of inter-segment segments that are connected to each other and do not overlap: a first type of inter-segment segment, a second type of inter-segment segment, and a third type of inter-segment segment
- the light source 10 is configured to emit a first primary color source light in a first type of inter-turn segment, a second primary color source light in a second type of inter-turn segment, and a third primary color source light in a third type of inter-turn segment;
- the control device 60 turns off the light source 10 in any one of the three types of inter-segment segments or any two types of inter-turn segments, and does not emit the corresponding primary color source light. For example, if the light source 10 is turned off in the first type of inter-turn, the first primary light source light is not emitted; when the light source 10 is turned off in the second type of inter-turn, the second primary light source is not emitted.
- the control device 60 is further configured to control the light source 10 to be turned on and off according to a preset frequency, so that the image rate of the image formed by the projection lens is smaller than the image.
- the signal acquires the image display frame rate under normal conditions.
- the image display frame rate is the color image display frame rate, i.e., the number of frames of the color image displayed within unit time (e.g., within 1 second).
- the image display frame rate is a monochrome image display frame rate, i.e., the number of frames of a monochrome image displayed within a unit of time (e.g., within 1 second). It can be understood that, on the basis that one frame of color image is composed of three frames of monochrome images, the monochrome image display frame rate is three times that of the color image display frame rate.
- the control device 60 can control the light source 10 to be turned on and off according to a preset frequency, so that the image formed by the projection lens is formed by the image light.
- the frame rate is less than 60/S.
- the light source 10 is turned off in some inter-turns, so that the frame rate of the image formed by the image light projected by the projection lens is smaller than the image display frame rate under normal image signal acquisition, and on the other hand, the frame rate is reduced.
- the output of the image light on the other hand, also reduces the output of the non-image light, so that the non-image light output to the light absorbing element can be reduced, the life of the light absorbing element is extended, and the maintenance cost of the projection display device is reduced.
- FIG. 3 is a flow chart showing the control of the light source 10 by the control device 60 in one embodiment.
- S302 In the external image source display mode or the local image source display mode, the control device 60 detects whether an image signal acquisition abnormality has occurred.
- S304 when an abnormality occurs in the image signal acquisition, the control device 60 controls the light source 10 to be turned on and off according to a preset frequency, so that the frame rate of the image formed by the image light projected by the projection lens is smaller than the image display frame rate when the image signal is acquired normally. .
- the source light emitted by the light source 10 includes three primary color source lights; the light source 10 can be turned off in the manner of the above-described embodiments, for example, the control device 60 can control the light source during a color image frame modulation period. 10 Turning off any one of the three primary color source lights or any two of the primary color source lights, so that the frame rate of the image formed by the image light projected by the projection lens 40 is smaller than the image display frame rate under normal conditions of the image signal acquisition. In one embodiment, control device 60 may control source 10 to turn off any one of the three primary color source lights or any two of the primary color source lights during each color image frame modulation period.
- control device 60 can control the light source 10 to turn off any one of the three primary color source lights or any two of the primary color source lights in a color image frame modulation period according to the preset frequency, and close one or two.
- the two closest color image frame modulation periods of the primary color source light may be spaced apart by a predetermined color image frame modulation period.
- control device 60 may control the light source 10 to be turned off during a whole period of some color image frame modulation periods according to a preset frequency, during a color image frame modulation period in which the light source 10 is turned off, Image light is formed so that no image is formed.
- the closest two color image frame modulation periods in which the light source 10 is turned off may be spaced apart by a predetermined color image period, or the control device 60 may control the light source 10 during the entire period of successive color image frame modulation periods. Turning off, the frame rate of the image formed by the image light projected by the projection lens is smaller than the image display frame rate under the normal condition of the image signal acquisition.
- the light source light emitted by the light source 10 includes three primary color light sources; the control device 60 may turn off any one of the three primary color light sources or any two of the primary colors during some color image frame modulation periods. Light source light, and controlling light source 10 to turn off three primary color source lights during some color image frame modulation periods
- the frame rate of the image formed by the image light projected by the projection lens is smaller than the image display frame rate under which the image signal acquisition is normal.
- the frame rate of the image formed by the image light projected by the projection lens is not infinitely small, but is greater than or equal to 1 frame/s.
- the image displayed at a frame rate greater than or equal to 1 frame/s can still serve as an information prompt to the user, and on the basis of reducing the non-image light outputted to the light absorbing element, does not hinder the user. Make a message.
- the control device 60 controls the turning on and off of the light source 10.
- the control device 60 can also control the output intensity of the source light to decrease in a section that controls the light source 10 to turn on and output the source light.
- the light source outputted by the light source 10 is formed by combining light beams emitted by the plurality of light source units; in the case of abnormal image signal acquisition, the control device may also control a part of the plurality of light source units to be turned off. , thereby reducing the intensity of the output source light.
- the control device 60 issues a drive signal to the spatial light modulator 30 such that the spatial light modulator 30
- the non-image light of the image light formed by modulating the light source light satisfies the following relationship: the ratio of the image light to the light source light is greater than the proportion of the non-image light to the light source light, to form a bright background information prompt image and reduce the output to the light absorbing element Light.
- the spatial light modulator 30 modulates a large amount of image light formed by the light source light to form less non-image light, in other words, the proportion of the image light to the light source light is greater than that of the non-image light.
- the proportion of light source light is greater than that of the non-image light.
- the information background image of the bright background consists of a bright background and a dark pattern symbol
- the dark pattern symbol includes one or more of a dark text, a dark line, and a dark color block.
- the dark pattern symbol is darker than the bright background to a greater extent than the human eye can perceive. For example, in an image modulation mechanism in which 255 is the highest image grayscale value, the grayscale value of the image corresponding to the pixel of the bright background is greater than or equal to 200, and the grayscale value of the image corresponding to the pixel of the dark pattern symbol is less than or equal to 100.
- the dark pattern symbol is darker than the bright background to a minimum of 100 gray levels.
- the information background image of the bright background includes the following images:
- the background is white or grayish white, and one or more of black text, black lines, and black block diagrams are embedded in the background.
- FIG. 4 is a flow chart showing the control of the spatial light modulator 30 by the control device 60 in one embodiment.
- the control device 60 detects whether an image signal acquisition abnormality has occurred. S404, when an image signal acquisition error occurs, the control device 60 sends a driving signal to the spatial light modulator 30, so that the spatial light modulator 30 modulates the light source light to form The image light and the non-image light satisfy the following relationship: the ratio of the image light to the light source light is greater than the proportion of the non-image light to the light source light, to form a bright background information prompt image and reduce the light output to the light absorbing element
- the state that is not in the external image source display mode and not in the local image source display mode, and waiting for the command input belongs to the standby mode.
- the information background image of the bright background includes a standby image of a bright background; in the standby mode, the control device 60 is configured to transmit the spatial light modulator to the spatial light modulator after the length of the segment in which the input command is not detected exceeds the threshold ⁇ A drive signal is emitted such that the spatial light modulator modulates the source light to form a standby image of a bright background.
- FIG. 5 is a flow chart showing the control of the spatial light modulator 30 by the control device 60 in one embodiment.
- the control device 60 determines whether the length of the segment in which the input command is not detected exceeds the threshold. S504, when the length of the segment in which the input command is not detected exceeds the threshold ⁇ , the control device 60 sends a driving signal to the spatial light modulator 30, so that the spatial light modulator modulates the light source light to form a standby image with a bright background.
- the information indicating image of the bright background comprises: a menu interface image of a bright background; in the standby mode, the control device is configured to send a driving signal to the spatial light modulator after detecting the input command, such that The spatial light modulator modulates the source light to form a menu interface image of a bright background corresponding to the detected input command.
- the menu interface image includes some control icons.
- the preset instruction may trigger an event corresponding to the preset instruction bound by the control image, thereby implementing a corresponding user interaction function.
- FIG. 6 shows a flow chart of the control of the spatial light modulator 30 by the control device 60 in one embodiment.
- the control device 60 determines whether an input command is detected; S640, when an input command ⁇ is detected, the control device 60 sends a driving signal to the spatial light modulator 30, so that the spatial light modulator The source light is modulated to form a menu interface image of a bright background corresponding to the detected input command.
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Abstract
一种投影显示设备,包括光源(10)、控制装置(60)、空间光调制器(30)、投影镜头(40)和吸光元件(50),其中:光源(10)用于发出光源光,光源光包括三种基色光源光;控制装置(60)用于向空间光调制器(30)发出驱动信号;空间光调制器(30)用于依据驱动信号调制光源光,而形成图像光以及非图像光,图像光输出至投影镜头(40),非图像光输出至吸光元件(50);投影镜头(40)用于投射图像光以形成图像;吸光元件(50)用于吸收非图像光;在图像信号获取异常情况下,在一彩色图像帧调制周期内,控制装置(60)控制光源(10)关闭三种基色光源光中的任意一种或任意两种基色光源光。上述投影显示设备,可以减少输出至吸光元件(50)的非图像光,从而可以延长吸光元件(50)的使用寿命,降低投影显示设备的维护成本。
Description
发明名称:投影显示设备
技术领域
[0001] 本发明涉及投影显示领域, 特别涉及一种投影显示设备。
背景技术
[0002] 投影显示设备将外接设备输入的视频图像信号或者网络传输的视频图像信号, 投影显示成相应的图像; 或者, 投影显示设备基于本机存储设备中存储的图像 数据投影显示相应的图像。
技术问题
[0003] 在投影显示设备投影显示图像的过程中, 空间光调制器发挥着重要的作用。 空 间光调制器将光源光调制成用于形成图像的图像光, 图像光对于光源光的占比 取决于空间光调制器调制过程中所依据的图像数据, 在图像调制过程中, 一般 还会形成除图像光之外的非图像光。 非图像光若不被吸收, 则有可能被反复反 射后从投影镜头射出, 而影响到图像的对比度。 因此, 在投影显示设备的内部 空间的适当位置, 例如, 投影显示设备的壳体内壁上, 或者在空间光调制器形 成的非图像光的出射光路上, 会设置吸光元件, 以吸收非图像光。 然而, 吸光 元件长期使用会老化, 吸光作用减退, 需要定期更换, 造成维护成本高。
问题的解决方案
技术解决方案
[0004] 有鉴于此, 有必要提供一种可降低成本的投影显示设备。
[0005] 一种投影显示设备, 包括光源、 控制装置、 空间光调制器、 投影镜头和吸光元 件, 其中:
[0006] 所述光源用于发出光源光, 所述光源光包括三种基色光源光;
[0007] 所述控制装置用于向所述空间光调制器发出驱动信号;
[0008] 所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图像光以及 非图像光, 所述图像光输出至所述投影镜头, 所述非图像光输出至所述吸光元 件;
[0009] 所述投影镜头用于投射所述图像光以形成图像;
[0010] 所述吸光元件用于吸收所述非图像光;
[0011] 在图像信号获取异常情况下, 在一彩色图像帧调制周期内, 所述控制装置控制 所述光源关闭所述三种基色光源光中的任意一种或任意两种基色光源光。
[0012] 本实施例中, 在图像信号获取异常情况下, 在一帧图像调制周期内, 关闭一种 或两种基色光源光, 相对于不关闭任意一种基色光源光的情形, 可以减少输出 至吸光元件的非图像光, 从而可以延长吸光元件的使用寿命, 降低投影显示设 备的维护成本。
[0013] 在一个实施例中, 所述光源包括:
[0014] 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第二光源以 及用于发出第三基色光源光的第三光源;
[0015] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括: 在一彩色图像帧调制周 期内, 所述控制装置控制关闭所述第一光源、 第二光源和第三光源中的任意一 种或任意两种光源;
[0016] 其中, 所述第一光源、 第二光源和第三光源中未被关闭的光源在一彩色图像帧 调制周期内持续发光。
[0017] 在一个实施例中, 所述光源包括:
[0018] 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第二光源以 及用于发出第三基色光源光的第三光源;
[0019] 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间段: 用于第一光源 发光的第一类吋间段、 用于第二光源发光的第二类吋间段和用于第三光源发光 的第三类吋间段;
[0020] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括: 在一彩色图像帧调制周 期内, 所述控制装置在所述三类吋间段中对应的吋间段内控制关闭所述第一光 源、 第二光源和第三光源中的任意一种或任意两种光源。
[0021] 在一个实施例中, 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间
段: 第一类吋间段、 第二类吋间段和第三类吋间段;
[0022] 所述光源用于在所述第一类吋间段内发出第一基色光源光、 在所述第二类吋间 段内发出第二基色光源光以及在所述第三类吋间段内发出第三基色光源光; [0023] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括:
[0024] 在一彩色图像帧调制周期内, 所述控制装置在所述三类吋间段中的任意一类或 任意两类吋间段内关闭所述光源。
[0025] 在一个实施例中, 在图像信号获取异常情况下, 所述控制装置向所述空间光调 制器发出驱动信号, 使得所述空间光调制器调制所述光源光形成的图像光的和 非图像光满足以下关系: 所述图像光对于所述光源光的占比大于所述非图像光 对于所述光源光的占比, 以形成亮背景的信息提示图像而减少输出至所述吸光 元件的光。
[0026] 在一个实施例中, 在外接图像源播放模式下, 所述控制装置依据信号接收接口 接收的图像信号向所述空间光调制器发出驱动信号, 以形成所述接收的图像信 号对应的图像;
[0027] 所述图像信号获取异常情况包括: 在所述外接图像源显示模式下, 所述信号接 收接口未接收到图像信号吋或者当所述信号接收接口的图像信号接收处于缓冲 状态。
[0028] 在一个实施例中, 在本地图像源显示模式下, 所述控制装置依据待显示的本地 存储的图像数据生成图像信号, 并依据所述生成的图像信号向所述空间光调制 器发出驱动信号, 以形成所述生成的图像信号对应的图像;
[0029] 所述图像信号获取异常情况包括: 在所述本地图像源显示模式下, 依据待显示 的本地存储的图像数据生成图像信号的过程发生异常。
[0030]
[0031] 一种投影显示设备, 包括光源、 控制装置、 空间光调制器、 投影镜头和吸光元 件, 其中:
[0032] 所述光源用于发出光源光;
[0033] 所述控制装置用于向所述空间光调制器发出驱动信号;
[0034] 所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图像光以及 非图像光, 所述图像光输出至所述投影镜头, 所述非图像光输出至所述吸光元 件;
[0035] 所述投影镜头用于投射所述图像光以形成图像;
[0036] 所述吸光元件用于吸收所述非图像光;
[0037] 在图像信号获取异常情况下, 所述控制装置还用于控制所述光源按照预设频率 幵启和关闭, 使得投影镜头投射的图像光形成的图像的帧率小于图像信号获取 正常情况下的图像显示帧率。
[0038] 本实施例中, 光源在一些吋间段内被关闭, 使得投影镜头投射的图像光形成的 图像的帧率小于图像信号获取正常情况下的图像显示帧率, 一方面减小了图像 光的输出, 相应地另一方面也减小了非图像光的输出, 从而可以减少输出至吸 光元件的非图像光, 而延长吸光元件的使用寿命, 降低投影显示设备的维护成 本。
[0039] 在一个实施例中, 在图像信号获取异常情况下, 所述控制装置向所述空间光调 制器发出驱动信号, 使得所述空间光调制器调制所述光源光形成的图像光的和 非图像光满足以下关系: 所述图像光对于所述光源光的占比大于所述非图像光 对于所述光源光的占比, 以形成亮背景的信息提示图像而减少输出至所述吸光 元件的光。
[0040] 在一个实施例中, 在外接图像源播放模式下, 所述控制装置依据信号接收接口 接收的图像信号向所述空间光调制器发出驱动信号, 以形成所述接收的图像信 号对应的图像;
[0041] 所述图像信号获取异常情况包括: 在所述外接图像源显示模式下, 所述信号接 收接口未接收到图像信号吋或者当所述信号接收接口的图像信号接收处于缓冲 状态。
[0042] 在一个实施例中, 在本地图像源显示模式下, 所述控制装置依据待显示的本地 存储的图像数据生成图像信号, 并依据所述生成的图像信号向所述空间光调制 器发出驱动信号, 以形成所述生成的图像信号对应的图像;
[0043] 所述图像信号获取异常情况包括: 在所述本地图像源显示模式下, 依据待显示
的本地存储的图像数据生成图像信号的过程发生异常。
[0044]
[0045] 一种投影显示设备, 包括光源、 控制装置、 空间光调制器、 投影镜头和吸光元 件, 其中:
[0046] 所述光源用于发出光源光;
[0047] 所述控制装置用于向所述空间光调制器发出驱动信号;
[0048] 所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图像光以及 非图像光, 所述图像光输出至所述投影镜头, 所述非图像光输出至所述吸光元 件;
[0049] 所述投影镜头用于投射所述图像光以形成图像;
[0050] 所述吸光元件用于吸收所述非图像光;
[0051] 在图像信号获取异常情况下以及在待机模式下中的一种或两种状态下, 所述控 制装置向所述空间光调制器发出驱动信号, 使得所述空间光调制器调制所述光 源光形成的图像光的和非图像光满足以下关系: 所述图像光对于所述光源光的 占比大于所述非图像光对于所述光源光的占比, 以形成亮背景的信息提示图像 而减少输出至所述吸光元件的光。
[0052] 上述投影显示设备, 在图像信号获取异常情况下, 或者在待机模式下, 输出亮 背景的信息提示图像, 从而输出到吸光元件的非图像光较少, 相对于输出暗背 景的信息提示图像的情形, 可以延长吸光元件的使用寿命, 从而降低投影显示 设备的维护成本。
[0053] 在一个实施例中, 在外接图像源播放模式下, 所述控制装置依据信号接收接口 接收的图像信号向所述空间光调制器发出驱动信号, 以形成所述接收的图像信 号对应的图像;
[0054] 所述图像信号获取异常情况包括: 在所述外接图像源显示模式下, 所述信号接 收接口未接收到图像信号吋或者当所述信号接收接口的图像信号接收处于缓冲 状态。
[0055] 在一个实施例中, 在本地图像源显示模式下, 所述控制装置依据待显示的本地 存储的图像数据生成图像信号, 并依据所述生成的图像信号向所述空间光调制
器发出驱动信号, 以形成所述生成的图像信号对应的图像;
[0056] 所述图像信号获取异常情况包括: 在所述本地图像源显示模式下, 依据待显示 的本地存储的图像数据生成图像信号的过程发生异常。
[0057] 在一个实施例中, 所述亮背景的信息提示图像包括亮背景的待机图像; 在所述 待机模式下, 所述控制装置用于在未检测到输入指令的吋段的吋长超过阈值吋
, 向所述空间光调制器发出驱动信号, 使得所述空间光调制器调制所述光源光 以形成所述亮背景的待机图像;
[0058] 和 /或,
[0059] 所述亮背景的信息指示图像包括: 亮背景的菜单界面图像; 在所述待机模式下 , 所述控制装置用于在检测到输入指令吋, 向所述空间光调制器发出驱动信号 , 使得所述空间光调制器调制所述光源光以形成与检测到的输入指令相对应的 亮背景菜单界面图像。
[0060] 在一个实施例中, 所述光源发出的光源光包括三种基色光源光;
[0061] 在形成所述亮背景的信息提示图像期间, 在一帧图像调制周期内, 所述控制装 置控制所述光源关闭所述三种基色光源光中的任意一种或任意两种基色光源光
[0062] 在一个实施例中, 所述光源包括:
[0063] 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第二光源以 及用于发出第三基色光源光的第三光源;
[0064] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括: 在一彩色图像帧调制周 期内, 所述控制装置控制关闭所述第一光源、 第二光源和第三光源中的任意一 种或任意两种光源;
[0065] 其中, 所述第一光源、 第二光源和第三光源中未被关闭的光源在一彩色图像帧 调制周期内持续发光。
[0066] 在一个实施例中, 所述光源包括:
[0067] 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第二光源以 及用于发出第三基色光源光的第三光源;
[0068] 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间段: 用于第一光源 发光的第一类吋间段、 用于第二光源发光的第二类吋间段和用于第三光源发光 的第三类吋间段;
[0069] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括: 在一彩色图像帧调制周 期内, 所述控制装置在所述三类吋间段中对应的吋间段内控制关闭所述第一光 源、 第二光源和第三光源中的任意一种或任意两种光源。
[0070] 在一个实施例中, 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间 段: 第一类吋间段、 第二类吋间段和第三类吋间段;
[0071] 所述光源用于在所述第一类吋间段内发出第一基色光源光、 在所述第二类吋间 段内发出第二基色光源光以及在所述第三类吋间段内发出第三基色光源光; [0072] 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三种基色光 源光中的任意一种或任意两种基色光源光的步骤包括:
[0073] 在一彩色图像帧调制周期内, 所述控制装置在所述三类吋间段中的任意一类或 任意两类吋间段内关闭所述光源。
[0074] 在一个实施例中, 在图像信号获取异常情况下, 所述控制装置还用于控制所述 光源按照预设频率幵启和关闭, 使得投影镜头投射的图像光形成的图像的帧率 小于图像信号获取正常情况下的图像显示帧率。
发明的有益效果
对附图的简要说明
附图说明
[0075] 图 1为示出了
[0076] 图 2示出了一个 -实施例中控制装置 60对于光源 10的控制流程示意图;
[0077] 图 3示出了一个 -实施例中控制装置 60对于光源 10的控制流程示意图;
[0078] 图 4示出了一个 -实施例中控制装置 60对于空间光调制器 30的控制流程示意图;
[0079] 图 5示出了一个 -实施例中控制装置 60对于空间光调制器 30的控制流程示意图;
[0080] 图 6示出了一个 -实施例中控制装置 60对于空间光调制器 30的控制流程示意图。
本发明的实施方式
[0081] 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部 的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性劳 动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
[0082]
[0083] 图 1为本发明一个实施例中投影显示设备的结构示意图。 如图 1所示, 在一个实 施例中, 投影显示设备包括光源 10、 中继系统 20、 空间光调制器 30、 投影镜头 4 0、 吸光元件 50和控制装置 60、 信号接收接口 70以及存储装置 80。 其中:
[0084] 光源 10发出光束 (以下称为光源光) 。 光源 10在控制装置 60的驱动下进行幵启 及关闭。 中继系统 20将光源光向空间光调制器 30聚光; 空间光调制器在控制装 置 60的驱动下进行运作, 聚光至空间光调制器 30的光源光在空间光调制器 30的 运作下形成图像光和非图像光。 例如, 空间光调制器 30为 DMD (数字微镜器件 ) , DMD由数字微镜阵列构成, 每一微镜构成一个调制单元, 一个调制单元用 于调制一个像素对应的图像。 各微镜在驱动信号的驱动下翻转。 翻转的微镜将 光源光反射形成图像光和非图像光。 各微镜的翻转的次数由驱动信号决定, 而 翻转的次数又决定了形成的图像光与非图像光的比例。 图像光输出至投影镜头 4 0; 非图像光输出至吸光元件 50。 投影镜头 40投射图像光以形成图像; 吸光元件 50吸收至少部分非图像光。 吸光元件 50可以设置于投影显示设备的壳体内壁, 或者, 吸光元件 50可以设置于空间光调制器 30出射的非图像光的出射光路上。
[0085] 其中, 控制装置 60包括控制器 602、 光源驱动电路 604、 图像转换部 606、 显示 编码器 608、 显示驱动器 610和图像解压部 612; 控制器 602负责光源驱动电路 604 、 图像转换部 606、 显示编码器 608、 显示驱动器 610和图像解压部 612等各电路 的运作控制, 控制器 602、 光源驱动电路 604、 图像转换部 606、 显示编码器 608 、 显示驱动器 610和图像解压部 612等各电路之间通过系统总线 SB进行数据通讯
[0086] 光源驱动电路 604用于驱动光源 10的幵启及关闭。
[0087] 在外接图像源播放模式下, 信号接收接口 70接收外接设备传输的图像信号, 或
者, 信号接收接口 70接收网络侧传输的图像信号。 控制装置 60依据信号接收接 口接收的图像信号向空间光调制器 30发出驱动信号, 以形成接收的图像信号对 应的图像。 其中, 图像信号由图像转换部 606按照适于显示的格式进行转换, 进 一步被输出至显示编码器 608。 显示编码器 608根据输入的图像信号生成视频信 号并输出至显示驱动器 610; 显示驱动器 610根据视频信号生成驱动信号, 以驱 动空间光调制器 30。 在一个实施例中, 外接图像源播放模式可以由控制装置 60 在接收到预设的输入指令后幵启, 输入指令可由指令接收部 (图未示) 接收; 或者, 外接图像源播放模式也可以由控制装置 60在输入连接部 (图未示) 插入 了用于传输图像信号的信号数据线后幵启。
[0088] 在本地图像源显示模式下, 控制装置 60依据待显示的本地存储的图像数据生成 图像信号, 并依据生成的图像信号向空间光调制器 30发出驱动信号, 以形成生 成的图像信号对应的图像。 其中, 图像解压部 612读取并解压存储装置 80中存储 的图像数据, 并将解压后的图像数据传送至图像转换部 606。 存储装置 80可以是 可拆离的存储卡或移动硬盘, 也可以是其它形式的存储设备等。 图像转换部 606 根据图像数据以及按照适于显示的格式生成图像信号, 进一步将图像信号输出 至显示编码器 608。 显示编码器 608根据输入的图像信号生成视频信号并输出至 显示驱动器 610; 显示驱动器 610根据视频信号生成驱动信号, 以驱动空间光调 制器 30。 在一个实施例中, 本地图像源显示模式可以由控制装置 60在接收到预 设的输入指令后幵启, 输入指令可由指令接收部 (图未示) 接收。 例如, 接收 到播放本地存储的视频的指令后, 或者, 接收到播放本地存储的 PPT的指令后, 或者, 接收到播放相册的指令后, 等等, 控制装置 60幵启本地图像源显示模式
[0089] 在一个实施例中, 在外接图像源显示模式下, 信号接收接口 70未接收到图像信 号, 属于图像信号获取异常情况。 在一个实施例中, 在外接图像源显示模式下 , 信号接收接口 70的图像信号接收处于缓冲状态, 例如, 图像信号的传输速率 较慢, 接收的图像信号不足以顺畅地显示对应的视频, 也属于图像信号获取异 常情况。 在外接图像源显示模式下, 信号接收接口 70接收的图像信号不中断且 图像信号的传输速度足够快 (按照预设的帧速接收图像信号) 以使得可以顺畅
地显示对应的视频, 则属于图像信号获取正常情况。 在一个实施例中, 当信号 接收接口 70未接收到图像信号吋, 控制装置 60控制空间光调制器 30进行图像调 制运作以形成用于表示无信号输入的信息提示图像。 在一个实施例中, 当信号 接收接口 70的图像信号接收处于缓冲状态吋, 控制装置 60控制空间光调制器 30 进行图像调制以形成用于表示正在缓冲的信息提示图像。
[0090] 在一个实施例中, 在本地图像源显示模式下, 依据待显示的本地存储的图像数 据生成图像信号的过程发生异常, 例如, 投影显示设备的用于存储图像数据的 存储装置拆离投影显示设备, 存储装置损坏而发生数据读取错误等等, 属于图 像信号获取异常情况。 而在本地图像源显示模式下, 图像解析部 612读取并解析 存储装置 80中存储的图像数据所生成的图像信号不中断且图像信号的生成速度 足够快以使得可以顺畅地显示对应的视频 (按照预设的帧率生成图像信号) , 则属于图像信号获取正常情况。 在一个实施例中, 当依据待显示的本地存储的 图像数据生成图像信号的过程发生异常吋, 控制装置 60控制空间光调制器 30进 行图像调制运作以形成用于表示图像信号生成异常的信息提示图像, 例如, 形 成用于表示存储装置已拆离的信息提示图像, 或者, 形成用于表示存储装置损 坏的信息提示图像, 等等。
[0091] 可以理解的, 本发明的投影显示设备并不以图 1所示的结构示意图为限, 投影 显示设备可以具备更多或更少的部件。 其中, 控制装置 60的结构组成也并不以 图 1为限, 控制装置 60还可以配置为其它结构。
[0092]
[0093] 在一个实施例中, 光源 10发出的光源光包括三种基色光源光; 在图像信号获取 异常情况下, 在一彩色图像帧调制周期内, 控制装置 60控制光源 10关闭三种基 色光源光中的任意一种或任意两种基色光源光。
[0094] 本发明的"在一彩色图像帧调制周期内", 不限制彩色图像帧调制周期的数量, 这里的 "一"是为了以一个彩色图像帧调制周期为单位进行描述, 而不是限定只在 一个彩色图像帧调制周期内进行相关控制和运作。
[0095] 三种基色光源光可以为例如红、 绿和蓝色光源光。 可以理解的, 三种基色光源 光也可以为例如品红、 黄、 青色光源光等等。 三种基色光源光按照一定比例合
光可以获得白光。
[0096] 一帧彩色图像信号包括三种基色对应的图像帧信号, 例如, 一帧彩色图像信号 包括: 第一基色帧信号、 第二基色帧信号和第三基色帧信号; 在一帧图像调制 周期内, 光源 10发出第一基色光源光、 第二基色光源光和第三基色光源光。 在 一彩色图像帧调制周期内, 空间光调制器 30依据一帧彩色图像信号的第一基色 帧信号对应的驱动信号进行运作, 第一基色光源光聚光至空间光调制器 30以及 在空间光调制器 30的运作的作用下形成第一基色图像光以及第一基色非图像光 ; 空间光调制器 30依据该帧彩色图像信号的第二基色帧信号对应的驱动信号进 行运作, 第二基色光源光聚光至空间光调制器 30以及在空间光调制器 30的运作 的作用下形成第二基色图像光以及第二基色非图像光; 以及类似的, 形成第三 基色图像光和第三基色非图像光。
[0097] 在一彩色图像帧调制周期内, 控制装置 60控制光源 10关闭三种基色光源光中的 任意一种或任意两种基色光源光, 例如, 关闭第一基色光源光和第二基色光源 光, 则在一彩色图像帧调制周期内, 只形成幵启的基色光源光对应的图像光和 非图像光。 从而可以减少输出至吸光元件的非图像光, 延长吸光元件的使用寿 命, 降低投影显示设备的维护成本。
[0098] 图 2示出了一个实施例中控制装置 60对于光源 10的控制流程示意图。 如图 2所示 : S202, 在外接图像源显示模式或本地图像源显示模式下, 控制装置 60检测是 否发生图像信号获取异常。 S204, 当发生图像信号获取异常吋, 在一彩色图像 帧调制周期内, 控制装置 60控制光源 10关闭三种基色光源光中的任意一种或任 意两种基色光源光。
[0099] 在一个实施例中, 光源 10包括: 用于发出第一基色光源光的第一光源 (图未示 ) 、 用于发出第二基色光源光的第二光源 (图未示) 以及用于发出第三基色光 源光的第三光源 (图未示) 。
[0100] 本实施例中, 投影显示设备具有三个空间光调制器 30, 第一光源、 第二光源和 第三光源发出的光束分别聚光到三个空间光调制器 30中的一个, 一个光源对应 一个空间光调制器 30。 在图像信号获取正常情况下, 在一彩色图像帧调制周期 内, 三个光源都持续发光, 三个空间光调制器 30分别调制对应的光源光, 从而
三种基色图像同吋形成并叠加显示, 形成彩色图像的视觉效果。
[0101] 本实施例中, 在图像信号获取异常情况下, 在一彩色图像帧调制周期内, 控制 装置 60控制关闭第一光源、 第二光源和第三光源中的任意一种或任意两种光源 ; 其中, 第一光源、 第二光源和第三光源中未被关闭的光源在一彩色图像帧调 制周期内仍持续发光。
[0102] 在一个实施例中, 光源 10包括: 用于发出第一基色光源光的第一光源 (图未示 ) 、 用于发出第二基色光源光的第二光源 (图未示) 以及用于发出第三基色光 源光的第三光源 (图未示) 。
[0103] 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间段: 用于第一光源 发光的第一类吋间段、 用于第二光源发光的第二类吋间段和用于第三光源发光 的第三类吋间段。 例如, 一彩色图像帧调制周期可以被划分为三个吋间段, 分 别是: 第一类吋间段、 第二类吋间段和第三类吋间段。 又例如, 一彩色图像帧 调制周期可以被划分为 6个吋间段, 分别是: 第一类吋间段、 第二类吋间段、 第 三类吋间段、 第一类吋间段、 第二类吋间段和第三类吋间段。 等等, 以此类推
[0104] 一彩色图像帧调制周期被划分成的吋间段中, 前后衔接的两个吋间段在吋间轴 上没有交叠, 且前后衔接的两个吋间段之间可以没有间隔 (无缝衔接) ; 然而 实际操作过程中, 前后衔接的两个吋间段不一定可以做到严格的无缝衔接, 前 后衔接的两个吋间段之间可以允许一定的间隔。 另外, 也可以根据需要设置前 后衔接的两个吋间段之间的间隔吋长。 本实施例中, 投影显示设备具有至少一 个空间光调制器 30。 在图像信号获取正常情况下, 在一彩色图像帧调制周期内 , 第一光源发出的第一基色光源光在第一类吋间段内聚光至该空间光调制器 30 , 第二光源发出的第二基色光源光在第二类吋间段内聚光至该空间光调制器 30 , 以及第三光源发出的第三基色光源光在第三类吋间段内聚光至该空间光调制 器 30, 空间光调制器 30分别在第一类吋间段、 第二类吋间段和第三类吋间段内 调制对应的光源光, 吋序形成三种基色图像光, 对应的三种基色图像吋序显示 , 形成彩色图像的视频效果。
[0105] 本实施例中, 在图像信号获取异常情况下, 在一彩色图像帧调制周期内, 控制
装置 60在三类吋间段中对应的吋间段内控制关闭第一光源、 第二光源和第三光 源中的任意一种或任意两种光源。 例如, 在第一类吋间段内关闭第一光源, 或 在第二类吋间段内关闭第二类光源, 等等。
[0106] 在一个实施例中, 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间 段: 第一类吋间段、 第二类吋间段和第三类吋间段; 光源 10用于在第一类吋间 段内发出第一基色光源光、 在第二类吋间段内发出第二基色光源光以及在第三 类吋间段内发出第三基色光源光;
[0107] 在一彩色图像帧调制周期内, 控制装置 60在三类吋间段中的任意一类或任意两 类吋间段内关闭光源 10, 从而不出射相应的基色光源光。 例如, 在第一类吋间 段内关闭光源 10, 则不出射第一基色光源光; 在第二类吋间段内关闭光源 10, 则不出射第二基色光源光。
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[0109] 在一个实施例中, 在图像信号获取异常情况下, 控制装置 60还用于控制光源 10 按照预设频率幵启和关闭, 使得投影镜头投射的图像光形成的图像的帧率小于 图像信号获取正常情况下的图像显示帧率。 在一个实施中, 图像显示帧率是彩 色图像显示帧率, 即单位吋间内 (例如 1秒内) 显示的彩色图像的帧数。 在另一 个实施例中, 图像显示帧率是单色图像显示帧率, 即单位吋间内 (例如 1秒内) 显示的单色图像的帧数。 可以理解的, 在一帧彩色图像由三帧单色图像构成的 基础上, 单色图像显示帧率是彩色图像显示帧率的三倍。
[0110] 例如, 在图像信号获取正常情况下的图像显示帧率为 60帧 /S, 控制装置 60可控 制光源 10按照预设频率幵启和关闭, 使得投影镜头投射的图像光形成的图像的 帧率小于 60/S。
[0111] 本实施例中, 光源 10在一些吋间段内被关闭, 使得投影镜头投射的图像光形成 的图像的帧率小于图像信号获取正常情况下的图像显示帧率, 一方面减小了图 像光的输出, 相应地另一方面也减小了非图像光的输出, 从而可以减少输出至 吸光元件的非图像光, 而延长吸光元件的使用寿命, 降低投影显示设备的维护 成本。
[0112] 图 3示出了一个实施例中控制装置 60对于光源 10的控制流程示意图。 如图 3所示
: S302, 在外接图像源显示模式或本地图像源显示模式下, 控制装置 60检测是 否发生图像信号获取异常。 S304, 当发生图像信号获取异常吋, 控制装置 60控 制光源 10按照预设频率幵启和关闭, 使得投影镜头投射的图像光形成的图像的 帧率小于图像信号获取正常情况下的图像显示帧率。
[0113] 在一个实施例中, 光源 10发出的光源光包括三种基色光源光; 可参照上述实施 例的方式关闭光源 10, 例如, 可以在一彩色图像帧调制周期内, 控制装置 60控 制光源 10关闭三种基色光源光中的任意一种或任意两种基色光源光, 以使得投 影镜头 40投射的图像光形成的图像的帧率小于图像信号获取正常情况下的图像 显示帧率。 在一个实施例中, 可以在每一彩色图像帧调制周期内, 控制装置 60 控制光源 10关闭三种基色光源光中的任意一种或任意两种基色光源光。 在一个 实施例中, 控制装置 60可以按照预设频率控制光源 10在一彩色图像帧调制周期 内关闭三种基色光源光中的任意一种或任意两种基色光源光, 关闭了一种或两 种基色光源光的最相近的两个彩色图像帧调制周期之间可以间隔预设个彩色图 像帧调制周期。
[0114] 在另一个实施例中, 控制装置 60可按照预设频率在一些彩色图像帧调制周期的 整段吋间内控制光源 10关闭, 在光源 10关闭的一彩色图像帧调制周期内, 不会 形成图像光, 从而也不会形成图像。 光源 10关闭的最相近的两个彩色图像帧调 制周期之间可以间隔预设个彩色图像周期, 或者, 控制装置 60可以在连续的几 个彩色图像帧调制周期的整段吋间内控制光源 10关闭, 使得投影镜头投射的图 像光形成的图像的帧率小于图像信号获取正常情况下的图像显示帧率。
[0115] 在其它实施例中, 光源 10发出的光源光包括三种基色光源光; 控制装置 60可以 在一些彩色图像帧调制周期内关闭三种基色光源光中的任意一种或任意两种基 色光源光, 以及在一些彩色图像帧调制周期内控制光源 10关闭三种基色光源光
, 使得投影镜头投射的图像光形成的图像的帧率小于图像信号获取正常情况下 的图像显示帧率。
[0116] 在一个实施例中, 投影镜头投射的图像光形成的图像的帧率不是无限小, 而是 大于等于 1帧 /s。 按照大于或等于 1帧 /S的帧率显示的图像依然可以对用户起到信 息提示的作用, 在减小输出至吸光元件的非图像光的基础上, 也不妨碍对用户
进行信息提示。
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[0118] 在上述实施例中, 控制装置 60控制光源 10的幵启和关闭。 在一个实施例中, 控 制装置 60还可以在控制光源 10幵启并输出光源光的吋段内, 控制光源光的输出 强度降低。 在一个实施例中, 光源 10输出的光源光为由多个光源单元发出的光 束合光而成; 在图像信号获取异常情况下, 控制装置还可以控制该多个光源单 元中的一部分光源单元关闭, 从而降低输出的光源光的强度。
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[0120] 在一个实施例中, 在图像信号获取异常情况下以及在待机模式下中的一种或两 种状态下, 控制装置 60向空间光调制器 30发出驱动信号, 使得空间光调制器 30 调制光源光形成的图像光的和非图像光满足以下关系: 图像光对于光源光的占 比大于非图像光对于光源光的占比, 以形成亮背景的信息提示图像而减少输出 至吸光元件的光。
[0121] 形成亮背景的信息提示图像吋, 空间光调制器 30调制光源光形成的图像光较多 而形成的非图像光较少, 换言之, 图像光对于光源光的占比大于非图像光对于 光源光的占比。
[0122] 在一个实施例中, 亮背景的信息提示图像由亮背景和暗图案符号组成, 暗图案 符号包括暗色文字、 暗色线条和暗色框图中的一种或几种。 在一个实施例中, 暗图案符号相较于亮背景暗的程度大于人眼能察觉的最低限度。 例如, 在以 255 为最高图像灰阶值的图像调制机制中, 亮背景的像素所对应的图像灰阶值大于 等于 200, 暗图案符号的像素所对应的图像灰阶值小于等于 100。 其中, 暗图案 符号相较于亮背景暗的程度最低为 100个灰阶。
[0123] 在一个实施例中, 亮背景的信息提示图像包括以下图像: 背景为白色或灰白色 , 黑色文字、 黑色线条和黑色框图等中的一种或几种嵌于背景中。
[0124] 图 4示出了一个实施例中控制装置 60对于空间光调制器 30的控制流程示意图。
如图 4所示: S402, 在外接图像源显示模式或本地图像源显示模式下, 控制装置 60检测是否发生图像信号获取异常。 S404, 当发生图像信号获取异常吋, 控制 装置 60向空间光调制器 30发出驱动信号, 使得空间光调制器 30调制光源光形成
的图像光的和非图像光满足以下关系: 图像光对于光源光的占比大于非图像光 对于光源光的占比, 以形成亮背景的信息提示图像而减少输出至吸光元件的光
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[0126] 在一个实施例中, 不处于外接图像源显示模式下, 以及不处于本地图像源显示 模式下, 且等待指令输入的状态, 属于待机模式。 在一个实施例中, 亮背景的 信息提示图像包括亮背景的待机图像; 在待机模式下, 控制装置 60用于在未检 测到输入指令的吋段的吋长超过阈值吋, 向空间光调制器发出驱动信号, 使得 空间光调制器调制光源光以形成亮背景的待机图像。
[0127] 图 5示出了一个实施例中控制装置 60对于空间光调制器 30的控制流程示意图。
如图 5所示: S502, 在待机模式下, 控制装置 60判断未检测到输入指令的吋段的 吋长是否超过阈值。 S504, 当未检测到输入指令的吋段的吋长超过阈值吋, 控 制装置 60向空间光调制器 30发出驱动信号, 使得空间光调制器调制光源光以形 成亮背景的待机图像。
[0128] 在一个实施例中, 亮背景的信息指示图像包括: 亮背景的菜单界面图像; 在待 机模式下, 控制装置用于在检测到输入指令吋, 向空间光调制器发出驱动信号 , 使得空间光调制器调制光源光以形成与检测到的输入指令相对应的亮背景的 菜单界面图像。
[0129] 菜单界面图像中包含一些控件图标, 当控件图像获得焦点吋, 预设指令可以触 发该控件图像绑定的与预设指令对应的事件, 从而实现相应的用户交互功能。
[0130] 图 6示出了一个实施例中控制装置 60对于空间光调制器 30的控制流程示意图。
如图 6所示: S620, 在待机模式下, 控制装置 60判断是否检测到输入指令; S640 , 当检测到输入指令吋, 控制装置 60向空间光调制器 30发出驱动信号, 使得空 间光调制器调制光源光以形成与检测到的输入指令相对应的亮背景的菜单界面 图像。
[0131] 本说明书中各个实施例所描述的侧重点不同, 各个实施例的技术特征在不发生 矛盾的情况下可以组合; 本领域技术人员在不付出创造性劳动的情况下针对各 个实施例所进行的组合都属于本申请文件保护的范围。
对所公幵的实施例的上述说明, 使本领域专业技术人员能够实现或使用本发明 。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的, 本 文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下, 在其它实 施例中实现。 因此, 本发明将不会被限制于本文所示的这些实施例, 而是要符 合与本文所公幵的原理和新颖特点相一致的最宽的范围。
Claims
[权利要求 1] 1、 一种投影显示设备, 包括光源、 控制装置、 空间光调制器、 投影 镜头和吸光元件, 其中:
所述光源用于发出光源光, 所述光源光包括三种基色光源光; 所述控制装置用于向所述空间光调制器发出驱动信号;
所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图 像光以及非图像光, 所述图像光输出至所述投影镜头, 所述非图像光 输出至所述吸光元件;
所述投影镜头用于投射所述图像光以形成图像; 所述吸光元件用于吸收所述非图像光;
其特征在于, 在图像信号获取异常情况下, 在一彩色图像帧调制周期 内, 所述控制装置控制所述光源关闭所述三种基色光源光中的任意一 种或任意两种基色光源光。
[权利要求 2] 2、 根据权利要求 1所述的投影显示设备, 其特征在于, 所述光源包括 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第 二光源以及用于发出第三基色光源光的第三光源; 在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三 种基色光源光中的任意一种或任意两种基色光源光的步骤包括: 在一 彩色图像帧调制周期内, 所述控制装置控制关闭所述第一光源、 第二 光源和第三光源中的任意一种或任意两种光源; 其中, 所述第一光源、 第二光源和第三光源中未被关闭的光源在一彩 色图像帧调制周期内持续发光。
[权利要求 3] 3、 根据权利要求 1所述的投影显示设备, 其特征在于, 所述光源包括 用于发出第一基色光源光的第一光源、 用于发出第二基色光源光的第 二光源以及用于发出第三基色光源光的第三光源; 一彩色图像帧调制周期分为相互衔接且不相交叠的三类吋间段: 用于
第一光源发光的第一类吋间段、 用于第二光源发光的第二类吋间段和 用于第三光源发光的第三类吋间段;
在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三 种基色光源光中的任意一种或任意两种基色光源光的步骤包括: 在一 彩色图像帧调制周期内, 所述控制装置在所述三类吋间段中对应的吋 间段内控制关闭所述第一光源、 第二光源和第三光源中的任意一种或 任意两种光源。
[权利要求 4] 4、 根据权利要求 1所述的投影显示设备, 其特征在于, 一彩色图像帧 调制周期分为相互衔接且不相交叠的三类吋间段: 第一类吋间段、 第 二类吋间段和第三类吋间段;
所述光源用于在所述第一类吋间段内发出第一基色光源光、 在所述第 二类吋间段内发出第二基色光源光以及在所述第三类吋间段内发出第 三基色光源光;
在一彩色图像帧调制周期内, 所述控制装置控制所述光源关闭所述三 种基色光源光中的任意一种或任意两种基色光源光的步骤包括: 在一彩色图像帧调制周期内, 所述控制装置在所述三类吋间段中的任 意一类或任意两类吋间段内关闭所述光源。
[权利要求 5] 5、 一种投影显示设备, 其特征在于, 包括光源、 控制装置、 空间光 调制器、 投影镜头和吸光元件, 其中:
所述光源用于发出光源光;
所述控制装置用于向所述空间光调制器发出驱动信号;
所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图 像光以及非图像光, 所述图像光输出至所述投影镜头, 所述非图像光 输出至所述吸光元件;
所述投影镜头用于投射所述图像光以形成图像; 所述吸光元件用于吸收所述非图像光;
其特征在于, 在图像信号获取异常情况下, 所述控制装置还用于控制 所述光源按照预设频率幵启和关闭, 使得投影镜头投射的图像光形成
的图像的帧率小于图像信号获取正常情况下的图像显示帧率。
[权利要求 6] 6、 根据权利要求 1至 5任一所述的投影显示设备, 其特征在于, 在图 像信号获取异常情况下, 所述控制装置用于向所述空间光调制器发出 驱动信号, 使得所述空间光调制器调制所述光源光形成的图像光的和 非图像光满足以下关系: 所述图像光对于所述光源光的占比大于所述 非图像光对于所述光源光的占比, 以形成亮背景的信息提示图像而减 少输出至所述吸光元件的光。
[权利要求 7] 7、 一种投影显示设备, 包括光源、 控制装置、 空间光调制器、 投影 镜头和吸光元件, 其中:
所述光源用于发出光源光;
所述控制装置用于向所述空间光调制器发出驱动信号;
所述空间光调制器用于依据所述驱动信号调制所述光源光, 而形成图 像光以及非图像光, 所述图像光输出至所述投影镜头, 所述非图像光 输出至所述吸光元件;
所述投影镜头用于投射所述图像光以形成图像; 所述吸光元件用于吸收所述非图像光;
其特征在于, 在图像信号获取异常情况下以及在待机模式下中的一种 或两种状态下, 所述控制装置向所述空间光调制器发出驱动信号, 使 得所述空间光调制器调制所述光源光形成的图像光的和非图像光满足 以下关系: 所述图像光对于所述光源光的占比大于所述非图像光对于 所述光源光的占比, 以形成亮背景的信息提示图像而减少输出至所述 吸光元件的光。
[权利要求 8] 8、 根据权利要求 7所述的投影显示设备, 其特征在于, 在外接图像源 播放模式下, 所述控制装置依据信号接收接口接收的图像信号向所述 空间光调制器发出驱动信号, 以形成所述接收的图像信号对应的图像 所述图像信号获取异常情况包括: 在所述外接图像源显示模式下, 所
述信号接收接口未接收到图像信号吋或者当所述信号接收接口的图像 信号接收处于缓冲状态。
[权利要求 9] 9、 根据权利要求 7所述的投影显示设备, 其特征在于, 在本地图像源 显示模式下, 所述控制装置依据待显示的本地存储的图像数据生成图 像信号, 并依据所述生成的图像信号向所述空间光调制器发出驱动信 号, 以形成所述生成的图像信号对应的图像;
所述图像信号获取异常情况包括: 在所述本地图像源显示模式下, 依 据待显示的本地存储的图像数据生成图像信号的过程发生异常。
[权利要求 10] 10、 根据权利要求 7所述的投影显示设备, 其特征在于, 所述亮背景 的信息提示图像包括亮背景的待机图像; 在所述待机模式下, 所述控 制装置用于在未检测到输入指令的吋段的吋长超过阈值吋, 向所述空 间光调制器发出驱动信号, 使得所述空间光调制器调制所述光源光以 形成所述亮背景的待机图像;
和 /或,
所述亮背景的信息指示图像包括: 亮背景的菜单界面图像; 在所述待 机模式下, 所述控制装置用于在检测到输入指令吋, 向所述空间光调 制器发出驱动信号, 使得所述空间光调制器调制所述光源光以形成与 检测到的输入指令相对应的亮背景菜单界面图像。
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| CN112312099B (zh) * | 2019-07-29 | 2023-08-29 | 深圳光峰科技股份有限公司 | 投影显示设备 |
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| JP2001166255A (ja) * | 1999-12-06 | 2001-06-22 | Sharp Corp | 画像投影装置 |
| CN1580867A (zh) * | 2003-08-14 | 2005-02-16 | 台达电子工业股份有限公司 | 数字光处理投影系统及其投影方法 |
| CN103297734A (zh) * | 2012-03-02 | 2013-09-11 | 三菱电机株式会社 | 多画面显示装置 |
| WO2013150604A1 (ja) * | 2012-04-03 | 2013-10-10 | Necディスプレイソリューションズ株式会社 | 画像表示装置および異常通知方法 |
| JP2014016561A (ja) * | 2012-07-11 | 2014-01-30 | Seiko Epson Corp | プロジェクター、及びプロジェクターの制御方法 |
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| CN1157623C (zh) * | 2001-01-22 | 2004-07-14 | 台达电子工业股份有限公司 | 光路系统 |
| JP2005092182A (ja) * | 2003-08-13 | 2005-04-07 | Sony Corp | 投写型表示装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001166255A (ja) * | 1999-12-06 | 2001-06-22 | Sharp Corp | 画像投影装置 |
| CN1580867A (zh) * | 2003-08-14 | 2005-02-16 | 台达电子工业股份有限公司 | 数字光处理投影系统及其投影方法 |
| CN103297734A (zh) * | 2012-03-02 | 2013-09-11 | 三菱电机株式会社 | 多画面显示装置 |
| WO2013150604A1 (ja) * | 2012-04-03 | 2013-10-10 | Necディスプレイソリューションズ株式会社 | 画像表示装置および異常通知方法 |
| JP2014016561A (ja) * | 2012-07-11 | 2014-01-30 | Seiko Epson Corp | プロジェクター、及びプロジェクターの制御方法 |
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| CN110351539B (zh) | 2021-07-20 |
| CN110225325B (zh) | 2021-06-11 |
| CN110351539A (zh) | 2019-10-18 |
| CN110225325A (zh) | 2019-09-10 |
| CN108076330A (zh) | 2018-05-25 |
| CN108076330B (zh) | 2019-09-20 |
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