TWI790773B - Three-dimensional image display system and operation method thereof - Google Patents

Abstract

The invention provides a 3D image display system and an operation method thereof. The 3D image display system includes a display device and a shutter glasses. The display device alternately displays a first image frame suitable for viewing by a left eye and a second image frame suitable for viewing by a right eye in chronological order. Wherein, a first brightness feature of the first image frame is different from a second brightness feature of the second image frame. The shutter glasses include a left-eye shutter part, a right-eye shutter part, an image sensor, and a control circuit. The control circuit controls the right-eye shutter part to be in a shielding state when the image sensor senses the first brightness feature. The control circuit controls the left-eye shutter to be in the shielded state when the image sensor senses the second brightness feature.

Description

Three-dimensional image display system and operation method thereof

The present invention relates to a 3D image display, and in particular to a 3D image display system and its operating method.

Currently, a three-dimensional (3D) image display system provides glasses for users to wear. The 3D (stereoscopic) imaging is implemented in such a way that the user's left eye and right eye respectively watch the left-eye picture and the right-eye picture through 3D glasses. The left and right eyes receive different image information through special spectacle lenses, and then the two-eye images (parallax images) are synthesized into a three-dimensional image in the brain. For example, the display device may alternately display the left-eye frame and the right-eye frame in time sequence. Based on the switching timing of the left-eye frame and the right-eye frame, the shutter glasses can block one of the left-eye lens and the right-eye lens synchronously. The current 3D image display system needs to use an additional infrared emitter to transmit/transmit/transmit synchronous information about the switching timing of the left and right eye images to the shutter glasses. The shutter glasses can block one of the left-eye lens and the right-eye lens synchronously according to the timing of the received infrared signal (synchronous information). Whether the extra infrared emitter can be omitted without affecting the synchronous operation between the display device and the shutter glasses is one of many technical issues in the field of 3D image display technology.

The present invention provides a three-dimensional (three-dimension, 3D) image display system and its operation method, so that the switching operation of the display device and the shutter glasses can be synchronized.

In an embodiment of the present invention, the above-mentioned 3D image display system includes a display device and shutter glasses. The display device is used for alternately displaying the first frame suitable for viewing by the left eye and the second frame suitable for viewing by the right eye in time sequence. Wherein, the first brightness feature of the first frame is different from the second brightness feature of the second frame. The shutter glasses include a left eye shutter unit, a right eye shutter unit, an image sensor and a control circuit. The control circuit is configured to sense a first brightness characteristic of the first frame and a second brightness characteristic of the second frame through the image sensor. When the image sensor detects the first brightness feature, the control circuit controls the shutter for the right eye to be in a shielding state. When the image sensor detects the second brightness feature, the control circuit controls the shutter for the left eye to be in a shielding state. Wherein, the first brightness feature includes the first average brightness of the first picture, the second brightness feature includes the second average brightness of the second picture, the first average brightness is different from the second average brightness, and the first average brightness is different from the second average brightness. The difference between brightness is imperceptible to the user. Unawareness by the user is defined as: assuming that one of the first average brightness and the second average brightness is LD, the other of the first average brightness and the second average brightness is not LD and is between LD and i*LD Between, where i is a real number less than 1 and greater than 0.

In an embodiment of the present invention, the above-mentioned operation method includes: the display device of the three-dimensional image display system alternately displays the first picture suitable for viewing by the left eye and the second picture suitable for viewing by the right eye in time sequence, wherein the first picture is suitable for viewing by the right eye. The first brightness characteristic of a picture is different from the second brightness characteristic of the second picture; the control circuit of the shutter glasses of the three-dimensional image display system senses the first brightness characteristic of the first picture and the second brightness characteristic through the image sensor of the shutter glasses. The second brightness feature of the picture; when the image sensor senses the first brightness feature, the right eye shutter part of the shutter glasses is controlled by the control circuit to be in a shielding state; and when the image sensor senses the second brightness feature , the left eye shutter part of the shutter glasses is controlled by the control circuit to be in a shielding state. Wherein, the first brightness feature includes the first average brightness of the first picture, the second brightness feature includes the second average brightness of the second picture, the first average brightness is different from the second average brightness, and the first average brightness is different from the second average brightness. The difference between brightness is imperceptible to the user. Unawareness by the user is defined as: assuming that one of the first average brightness and the second average brightness is LD, the other of the first average brightness and the second average brightness is not LD and is between LD and i*LD Between, where i is a real number less than 1 and greater than 0.

Based on the above, the display device according to the embodiments of the present invention can make the first picture (left-eye picture) and the second picture (right-eye picture) have slightly different brightness characteristics. For example, the average brightness of the left-eye frame may be slightly brighter (or slightly darker) than the average brightness of the right-eye frame. The degree of difference between the first luminance feature of the left-eye image and the second luminance feature of the right-eye image is enough to be noticed by shutter glasses, but not (or not easily) noticed by the user. Based on the difference between the first luminance feature and the second luminance feature, the shutter glasses can judge whether the currently displayed picture of the display device is a left-eye picture or a right-eye picture, and then dynamically control the left-eye shutter part or the right-eye shutter part according to the judgment result is a masked state. Therefore, the screen switching operation of the display device and the shielding switching operation of the shutter glasses are synchronized.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

The term "coupled (or connected)" used throughout the specification of this case (including the patent claims) may refer to any direct or indirect means of connection. For example, if it is described in the text that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or certain A connection means indirectly connected to the second device. The terms "first" and "second" mentioned in the entire description of this case (including the scope of the patent application) are used to name elements (elements), or to distinguish different embodiments or ranges, and are not used to limit the number of elements The upper or lower limit of , nor is it used to limit the order of the elements. In addition, wherever possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements/components/steps using the same symbols or using the same terms in different embodiments can refer to related descriptions.

FIG. 1 is a schematic diagram of a circuit block of a three-dimensional image display system 100 according to an embodiment of the present invention. The three-dimensional (3D) image display system 100 shown in FIG. 1 includes shutter glasses 110 and a display device 120 . In the embodiment shown in FIG. 1 , the display device 120 includes a control circuit 121 , a display panel 122 and a backlight module 123 . Based on the control/driving of the control circuit 121 , the backlight module 123 can provide a backlight BL to the display panel 122 , and the display panel 122 can display images for users to watch. In the application scenario of 3D images, the display device 120 may alternately display the first frame (left-eye frame) IMG_L suitable for left-eye viewing and the second frame (right-eye frame) IMG_R suitable for right-eye viewing in time sequence. The first luminance characteristic of the first picture IMG_L is different from the second luminance characteristic of the second picture IMG_R. For example, in some embodiments, the average brightness of the first frame IMG_L may be slightly brighter than the average brightness of the second frame IMG_R. In other embodiments, the average brightness of the first frame IMG_L may be slightly darker than the average brightness of the second frame IMG_R.

In the embodiment shown in FIG. 1 , the shutter glasses 110 include a control circuit 111 , an image sensor 112 , a left-eye shutter SL and a right-eye shutter SR. The user can wear the shutter glasses 110 and watch the picture displayed on the display panel 122 through the left-eye shutter part SL and/or the right-eye shutter part SR. The control circuit 111 can sense the first brightness characteristic of the first frame IMG_L and the second brightness characteristic of the second frame IMG_R through the image sensor 112 . This embodiment does not limit the specific implementation of the image sensor 112 . According to actual design, in some embodiments, the image sensor 112 may include rolling shutter image sensors (Rolling Shutter Image Sensors, RSIS) and (or) other sensors.

FIG. 2 is a schematic flowchart of an operating method of a 3D image display system according to an embodiment of the present invention. Please refer to Figure 1 and Figure 2. In step S210 , the display panel 122 of the display device 120 alternately displays the first frame IMG_L suitable for viewing by the left eye and the second frame IMG_R suitable for viewing by the right eye in time sequence. The first luminance characteristic of the first picture IMG_L is different from the second luminance characteristic of the second picture IMG_R. For example, in some embodiments, when the display panel 122 displays the first frame IMG_L, the control circuit 121 of the display device 120 can adjust the display backlight brightness (brightness of the backlight BL) of the backlight module 123 to the first brightness state , so that the first frame IMG_L presents the first brightness characteristic. When the display panel 122 displays the second picture IMG_R, the control circuit 121 can adjust the brightness of the display backlight to a second brightness state different from the first brightness state, so that the second picture IMG_R presents characteristics different from the first brightness. The second brightness characteristic of .

For example (but not limited thereto), the first brightness feature includes a first average brightness of the first frame IMG_L, and the second brightness feature includes a second average brightness of the second frame IMG_R. Wherein, the first average luminance is different from the second average luminance, and the difference between the first average luminance and the second average luminance is unnoticeable (or not easy) to the user. The definition of "imperceptible to the user" can be determined according to the actual design. For example (but not limited thereto), the "imperceptible to the user" can be defined as: assuming that one of the first average brightness of the first frame IMG_L and the second average brightness of the second frame IMG_R is LD, Then the other of the first average brightness and the second average brightness is not LD and is between LD and i*LD, wherein the coefficient i is a real number less than 1 and greater than 0. The coefficient i can be determined according to the actual design. For example, in some embodiments, the coefficient i may be 0.95 or other values.

In step S220 , the control circuit 111 of the shutter glasses 110 can sense the current brightness characteristic of the image displayed on the display panel 122 through the image sensor 112 . For example, when the display panel 122 displays the first frame IMG_L, the image sensor 112 may sense the first brightness characteristic of the first frame IMG_L in step S220 . When the display panel 122 displays the second frame IMG_R, the image sensor 112 may sense the second brightness characteristic of the second frame IMG_R in step S220 . The first luminance characteristic of the first picture IMG_L is different from the second luminance characteristic of the second picture IMG_R. Based on the difference between the first luminance feature and the second luminance feature, the control circuit 111 can determine in step S230 whether the current luminance feature of the picture displayed on the display panel 122 is the first luminance feature of the first picture IMG_L or the second picture IMG_R. The second brightness feature.

When the image sensor 112 detects the first luminance feature (the judgment result of step S230 is "the first luminance feature of the first picture"), the control circuit 111 can proceed to step S240 to control the right-eye shutter SR to block state (the left-eye shutter part SL is in a non-shielding state). When the image sensor 112 senses the second brightness characteristic (the judgment result of step S230 is "the second brightness characteristic of the second picture"), the control circuit 111 controls the left-eye shutter part SL to be in a shielding state (the right-eye shutter part SR is an unshielded state).

For example, the control circuit 111 can sense the previous brightness characteristics of the previous frame displayed on the display panel 122 of the display device 120 through the image sensor 112 . Then, the control circuit 111 can sense the current brightness characteristic of the current frame displayed on the display device through the image sensor 112 , wherein the current frame is temporally adjacent to the previous frame. The control circuit 111 can compare the previous brightness characteristic with the current brightness characteristic. When the previous luminance feature is darker than the current luminance feature, the control circuit 111 can control one of the left-eye shutter SL and the right-eye shutter SR to be in a shielding state. When the previous luminance feature is brighter than the current luminance feature, the control circuit 111 can control the other of the left-eye shutter SL and the right-eye shutter SR to be in a shielding state. For example, in some embodiments, when the previous luminance characteristic is darker than the current luminance characteristic, the left eye shutter part SL is in the shielding state (the right eye shutter part SR is in the non-shielding state), and when the previous luminance characteristic is brighter than the current luminance characteristic, the right eye The shutter section SR is in the shielding state (the left-eye shutter section SL is in the non-shielding state). In some other embodiments, when the previous luminance feature is darker than the current luminance feature, the right eye shutter SR is in the shielding state (the left eye shutter SL is in the non-blocking state), and when the previous luminance feature is brighter than the current luminance feature, the left eye The shutter section SL is in the shielding state (the shutter section SR for the right eye is in the non-shielding state).

To sum up, the display device 120 in the above embodiment can make the first frame (left-eye frame) IMG_L and the second frame (right-eye frame) IMG_R have slightly different brightness characteristics. For example, the average brightness of the first frame IMG_L may be slightly brighter (or slightly darker) than the average brightness of the second frame IMG_R. The degree of difference between the first luminance characteristic of the first frame IMG_L and the second luminance characteristic of the second frame IMG_R is enough to be noticed by the shutter glasses 110 but not (or not easily) noticed by the user. Based on the difference between the first luminance feature and the second luminance feature, the shutter glasses can determine whether the currently displayed picture on the display device 120 is the first picture IMG_L or the second picture IMG_R, and then dynamically control the left eye shutter part SL or The right-eye shutter SR is in a blocking state. Therefore, the screen switching operation of the display device 120 and the shielding switching operation of the shutter glasses 110 are synchronized.

FIG. 3 is a schematic flowchart of an operating method of a 3D image display system according to another embodiment of the present invention. In the embodiment shown in FIG. 3 , the 3D image display system 100 can increase the frame rate (frame rate) of the display device 120 according to the current flicker rate during initialization, and then increase the frame rate of the display device 120 according to the increased frame rate. The detection frequency of the image sensor 112 is reduced to reduce the power consumption of the shutter glasses 110 . Wherein, the current flicker rate is related to the first flicker frequency corresponding to ambient light and the second flicker frequency corresponding to the display device 120 . The initialization period may include step S320 , step S330 , step S340 and step S350 shown in FIG. 3 . After the initialization period ends, the 3D image display system 100 can enter into a normal operation period to perform steps S360 , S370 , S380 , S390 and S395 shown in FIG. 3 . Steps S360 , S370 , S380 , S390 and S395 shown in FIG. 3 can be analogized with reference to relevant descriptions of steps S210 , S220 , S230 , S240 and S250 shown in FIG. 2 , so details are not repeated here.

Please refer to Figure 1 and Figure 3. After starting the system (step S310 ), the 3D image display system 100 can calculate the current flicker rate PF (step S320 ). Wherein, the current flicker rate PF is related to the first flicker frequency f1 corresponding to the ambient light and the second flicker frequency f2 corresponding to the display device 120 . The 3D image display system 100 can increase the frame rate of the display device 120 according to the current flicker rate PF (step S330 ).

For example, the control circuit 111 can sense the first flicker frequency f1 mainly contributed by ambient light through the image sensor 112 . In some practical application scenarios, the display device 120 can turn off (or suspend) the display operation of the display panel 122 , and the control circuit 111 can sense the first flicker frequency f1 through the image sensor 112 . Since the display panel 122 has been turned off, the first flicker frequency f1 sensed by the image sensor 112 is mainly contributed by the flicker of ambient light. Generally speaking, the strobe of ambient light is around 60 Hz. The display device 120 may turn on (or resume) the display operation of the display panel 122 after the first flicker frequency f1 is detected. The control circuit 111 can sense the second flicker frequency f2 mainly contributed by the frame rate of the display device 120 through the image sensor 112 .

The control circuit 111 can use the first flicker frequency f1 and the second flicker frequency f2 to calculate the current flicker rate PF. For example (but not limited thereto), the control circuit 111 can calculate PF = [(f2-f1)/(f2+f1)]*100% to obtain the current flicker rate PF. The control circuit 111 can send an adjustment request to the display device 120 according to the current flicker rate PF, so as to increase the frame rate of the display device 120 as much as possible. For example (but not limited thereto), the control circuit 111 may compare the current flicker rate PF with the first threshold. The control circuit 111 may issue an adjustment request to adjust the frame rate of the display device 120 under the condition that "the current flicker rate PF is greater than the first threshold". In addition, the control circuit 111 can send an adjustment request to adjust the frame rate of the display device 120 under the condition that "the second flicker frequency is less than the second threshold". Wherein, the first threshold and the second threshold may be determined according to actual design.

For example, assume that the frame rate of the display device 120 has ten steps, wherein the first step has the minimum frame rate, and the tenth step has the maximum frame rate. It should be noted that the number of steps, the minimum frame rate and the maximum frame rate can all be determined according to the actual design. Assume further that, according to actual design, the first threshold may be 37% (or other values), and the second threshold may be 120 Hz (or other values). At the beginning of step S330, the control circuit 111 can issue an adjustment request to adjust the frame rate of the display device 120 to the tenth step (maximum frame rate), and then the control circuit 111 can sense the current 10th step through the image sensor 112 Second, flicker frequency f2 and calculate the current flicker rate PF. The control circuit 111 can check the current flicker rate PF and the second flicker frequency f2. When the current flicker rate PF is greater than 37% (under the condition that the second flicker frequency f2 is greater than or equal to 120Hz), the control circuit 111 can reduce the frame rate of the display device 120 from the tenth step to the ninth step, and then control The circuit 111 regains the current second flicker frequency f2 and the current flicker rate PF. By analogy, the control circuit 111 can continuously reduce the frame rate of the display device 120 until the current flicker rate PF is less than or equal to 37% (on the premise that the second flicker frequency f2 is greater than or equal to 120 Hz). Therefore, the control circuit 111 of the shutter glasses 110 can increase the frame rate of the display device 120 as much as possible according to the current flicker rate PF.

In the above-mentioned embodiments, the calculation of the flicker rate PF and the decision-making of the frame rate adjustment are performed by the control circuit 111 of the shutter glasses 110 . In any case, the embodiments of the present invention are not limited thereto. For example, in some other embodiments, the control circuit 111 may provide the display device 120 with information related to the first flickering frequency f1 and the second flickering frequency f2. The control circuit 121 of the display device 120 can use the first flicker frequency f1 and the second flicker frequency f2 to calculate the current flicker rate PF, and the control circuit 121 of the display device 120 can adjust the size of the display panel 122 as large as possible according to the current flicker rate PF. frame rate.

By reducing the detection frequency of the image sensor 112 as much as possible, the power consumption of the shutter glasses 110 can be reduced as much as possible. In step S340 , the control circuit 111 may reduce the detection frequency of the image sensor 112 as much as possible according to the enlarged frame rate of the display device 120 . For example (but not limited thereto), under the condition that “the detection frequency of the image sensor 112 is greater than or equal to the frame rate of the display panel 122”, the control circuit 111 can reduce the frequency of the image sensor 112 as much as possible. detection frequency.

In step S350 , the display device 120 may time-share display two test frames with different brightness characteristics (first brightness characteristic and second brightness characteristic). In some actual designs, the contents of the two test pictures are the same. In other actual designs, the contents of the two test pictures may be different from each other. The control circuit 111 can time-divisionally sense the brightness characteristics (the first brightness characteristic and the second brightness characteristic) of the two test frames through the image sensor 112 . The control circuit 111 may record related setting parameters (sensing parameters) of the first brightness feature and the second brightness feature in step S350 . After obtaining the first luminance characteristic and the second luminance characteristic, the control circuit 111 can execute steps S360-S395, so that the shielding switching operation of the shutter glasses 110 (the shielding switching of the left-eye shutter SL and the right-eye shutter SR) can be synchronized Screen switching operation on the display device 120 (display switching between the first screen IMG_L and the second screen IMG_R). Steps S360-S395 shown in FIG. 3 can be analogized with reference to relevant descriptions of steps S210-S250 shown in FIG. 2, so details are not repeated here.

According to different design requirements, the control circuit 111 and (or) the control circuit 121 may be implemented in the form of hardware, firmware, software (program) or a combination of the above three combination form of those. In terms of hardware, the above control circuit 111 and (or) the control circuit 121 may be implemented as a logic circuit on an integrated circuit (integrated circuit). The related functions of the above control circuit 111 and (or) the control circuit 121 can be implemented as hardware by using hardware description languages (hardware description languages, such as Verilog HDL or VHDL) or other suitable programming languages. For example, the related functions of the control circuit 111 and (or) the control circuit 121 may be implemented in one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits (Application-specific integrated circuits, ASIC), digital signal processor (digital signal processor, DSP), field programmable logic gate array (Field Programmable Gate Array, FPGA) and/or various logic blocks, modules and circuits in other processing units. In terms of software and/or firmware, the related functions of the control circuit 111 and/or the control circuit 121 may be implemented as programming codes. For example, the above-mentioned control circuit 111 and (or) the control circuit 121 are implemented by using common programming languages (such as C, C++ or combination language) or other suitable programming languages. The programming code may be recorded/stored in a "non-transitory computer readable medium". In some embodiments, the non-transitory computer-readable medium includes, for example, read-only memory (Read Only Memory, ROM), tape (tape), disk (disk), card (card), semiconductor memory, Programmable logic circuits and/or storage devices. The storage device includes a hard disk drive (hard disk drive, HDD), a solid-state drive (Solid-state drive, SSD) or other storage devices. A central processing unit (Central Processing Unit, CPU), a controller, a microcontroller or a microprocessor can read and execute the programming code from the non-transitory computer-readable medium, thereby realizing the above-mentioned control circuit 111 and (or) related functions of the control circuit 121 .

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

100: Three-dimensional (3D) image display system 110: shutter glasses 111: control circuit 112: Image sensor 120: display device 121: Control circuit 122: display panel 123:Backlight module BL: backlight IMG_L: first picture IMG_R: Second picture SL: Left eye shutter department SR: Right eye shutter unit S210～S250, S310～S395: steps

FIG. 1 is a schematic diagram of a circuit block of a three-dimensional image display system according to an embodiment of the present invention. FIG. 2 is a schematic flowchart of an operating method of a 3D image display system according to an embodiment of the present invention. FIG. 3 is a schematic flowchart of an operating method of a 3D image display system according to another embodiment of the present invention.

S210~S250: steps

Claims (14)

A three-dimensional image display system, comprising: a display device for alternately displaying a first picture suitable for viewing by the left eye and a second picture suitable for viewing by the right eye in time sequence, wherein a first picture of the first picture is The brightness characteristic is different from a second brightness characteristic of the second picture; and a shutter glasses, including a left eye shutter part, a right eye shutter part, an image sensor and a control circuit, wherein the control circuit is configured to The image sensor senses the first brightness feature of the first frame and the second brightness feature of the second frame, and the control circuit controls the control circuit when the image sensor senses the first brightness feature The right-eye shutter part is in a shielding state, and the control circuit controls the left-eye shutter part to be in the shielding state when the image sensor senses the second brightness characteristic; wherein the first brightness characteristic includes the first picture A first average brightness of the second image, the second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness The difference between is imperceptible to the user; wherein imperceptible to the user is defined as: assuming that one of the first average luminance and the second average luminance is LD, then the first average luminance and the second average luminance The other one is not LD and is between LD and i*LD, wherein i is a real number less than 1 and greater than 0; wherein the 3D image display system adjusts a frame rate of the display device according to a current flicker rate , the current flicker rate is related to a first flicker frequency corresponding to an ambient light and a second flicker frequency corresponding to the display device, and the control circuit passes the The image sensor senses the first flicker frequency mainly contributed by the ambient light, the control circuit senses the second flicker frequency mainly contributed by the frame rate of the display device through the image sensor, the The control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate, and the control circuit sends an adjustment request to the display device according to the current flicker rate to increase the frame rate of the display device; wherein The first flicker frequency is f1, the second flicker frequency is f2, and the control circuit calculates PF=[(f2-f1)/(f2+f1)]*100% to obtain the current flicker rate PF. The three-dimensional image display system as described in Claim 1, wherein the display device adjusts the brightness of a display backlight to a first brightness state so that the first picture presents the first brightness characteristic, and the display device adjusts the brightness of the display backlight It is a second brightness state to make the second picture present the second brightness feature, and the first brightness state is different from the second brightness state. The three-dimensional image display system as described in claim 1, wherein the control circuit senses a previous brightness characteristic of a previous picture displayed by the display device through the image sensor; the control circuit senses a previous brightness feature through the image sensor A current brightness characteristic of a current picture displayed by the display device, wherein the current picture is temporally adjacent to the previous picture; the control circuit compares the previous brightness characteristic with the current brightness characteristic; when the previous brightness characteristic is darker than the previous picture When the current brightness characteristic is present, the control circuit controls one of the left-eye shutter unit and the right-eye shutter unit to be in the shielding state; and when the previous brightness characteristic is brighter than the current brightness characteristic, the control circuit controls The other of the left-eye shutter unit and the right-eye shutter unit is in the shielding state. A three-dimensional image display system, comprising: a display device for alternately displaying a first picture suitable for viewing by the left eye and a second picture suitable for viewing by the right eye in time sequence, wherein a first picture of the first picture is The brightness characteristic is different from a second brightness characteristic of the second picture; and a shutter glasses, including a left eye shutter part, a right eye shutter part, an image sensor and a control circuit, wherein the control circuit is configured to The image sensor senses the first brightness feature of the first frame and the second brightness feature of the second frame, and the control circuit controls the control circuit when the image sensor senses the first brightness feature The right-eye shutter part is in a shielding state, and the control circuit controls the left-eye shutter part to be in the shielding state when the image sensor senses the second brightness characteristic; wherein the first brightness characteristic includes the first frame A first average brightness of the second image, the second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness The difference between is imperceptible to the user; wherein imperceptible to the user is defined as: assuming that one of the first average luminance and the second average luminance is LD, then the first average luminance and the second average luminance The other one is not LD and is between LD and i*LD, wherein i is a real number less than 1 and greater than 0; wherein the 3D image display system adjusts a frame rate of the display device according to a current flicker rate , the current flicker rate is related to a first flicker frequency corresponding to an ambient light and a second flicker frequency corresponding to the display device, and the control circuit passes the The image sensor senses the first flicker frequency mainly contributed by the ambient light, the control circuit senses the second flicker frequency mainly contributed by the frame rate of the display device through the image sensor, the The control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate, and the control circuit sends an adjustment request to the display device according to the current flicker rate to increase the frame rate of the display device; wherein The control circuit compares the current flicker rate with a first threshold, and the control circuit sends the adjustment request to adjust the frame rate of the display device under the condition that the current flicker rate is greater than the first threshold. The 3D image display system as claimed in claim 4, wherein the control circuit further sends out the adjustment request to adjust the frame rate of the display device under the condition that the second flicker frequency is greater than or equal to a second threshold. A three-dimensional image display system, comprising: a display device for alternately displaying a first picture suitable for viewing by the left eye and a second picture suitable for viewing by the right eye in time sequence, wherein a first picture of the first picture is The brightness characteristic is different from a second brightness characteristic of the second picture; and a shutter glasses, including a left eye shutter part, a right eye shutter part, an image sensor and a control circuit, wherein the control circuit is configured to The image sensor senses the first brightness feature of the first frame and the second brightness feature of the second frame, and the control circuit controls the control circuit when the image sensor senses the first brightness feature The right-eye shutter part is in a shielding state, and the control circuit controls the left-eye shutter part to be in the shielding state when the image sensor senses the second brightness characteristic; wherein the first brightness characteristic includes the first frame of a first average brightness, the The second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness is not visible to the user perceived; where the user is not aware of is defined as: assuming that one of the first average brightness and the second average brightness is LD, then the other of the first average brightness and the second average brightness is not LD and Between LD and i*LD, wherein i is a real number less than 1 and greater than 0; wherein the 3D image display system adjusts a frame rate of the display device according to a current flicker rate, and the current flicker rate is related to a A first flicker frequency corresponding to the ambient light and a second flicker frequency corresponding to the display device, the control circuit senses the first flicker frequency mainly contributed by the ambient light through the image sensor, the control The circuit senses the second flicker frequency mainly contributed by the frame rate of the display device through the image sensor, the control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate, and The control circuit sends an adjustment request to the display device to increase the frame rate of the display device according to the current flicker rate; wherein the control circuit senses the first light mainly contributed by the ambient light through the image sensor flicker frequency, the control circuit senses the second flicker frequency mainly contributed by the frame rate of the display device through the image sensor, the control circuit provides the first flicker frequency and the second flicker frequency to the A display device, the display device uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate, and the display device increases the frame rate according to the current flicker rate. A three-dimensional image display system, comprising: A display device for alternately displaying a first picture suitable for viewing by the left eye and a second picture suitable for viewing by the right eye in time sequence, wherein a first brightness characteristic of the first picture is different from that of the second picture a second brightness characteristic; and a shutter glasses, including a left eye shutter part, a right eye shutter part, an image sensor and a control circuit, wherein the control circuit is configured to sense The first luminance feature of the first frame and the second luminance feature of the second frame, when the image sensor senses the first luminance feature, the control circuit controls the right-eye shutter to be in a shielding state , and when the image sensor senses the second brightness characteristic, the control circuit controls the left-eye shutter part to be in the shielding state; wherein the first brightness characteristic includes a first average brightness of the first picture, the The second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness is not visible to the user perceived; where the user is not aware of is defined as: assuming that one of the first average brightness and the second average brightness is LD, then the other of the first average brightness and the second average brightness is not LD and Between LD and i*LD, wherein i is a real number less than 1 and greater than 0; wherein the 3D image display system adjusts a frame rate of the display device according to a current flicker rate, and the current flicker rate is related to a A first flicker frequency corresponding to the ambient light and a second flicker frequency corresponding to the display device, the control circuit senses the first flicker frequency mainly contributed by the ambient light through the image sensor, the control The circuit senses mainly contributed by the frame rate of the display device through the image sensor the second flicker frequency, the control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate, and the control circuit sends an adjustment request to the display device according to the current flicker rate to increase the The frame rate of the display device; wherein the control circuit reduces a detection frequency of the image sensor according to the enlarged frame rate of the display device, and the control circuit meets the detection frequency greater than or equal to Under the condition of the frame rate, reduce the detection frequency. A method for operating a three-dimensional image display system, comprising: a display device of the three-dimensional image display system alternately displays a first frame suitable for viewing by the left eye and a second frame suitable for viewing by the right eye in time sequence, wherein the A first brightness feature of the first frame is different from a second brightness feature of the second frame; a control circuit of a shutter glasses of the three-dimensional image display system senses the first brightness through an image sensor of the shutter glasses The first brightness feature of a frame and the second brightness feature of the second frame; when the image sensor senses the first brightness feature, a right-eye shutter part of the shutter glasses is controlled by the control circuit It is a shielding state; when the image sensor senses the second brightness characteristic, the control circuit controls a left-eye shutter portion of the shutter glasses to be in the shielding state; according to a current flicker rate, the display is enlarged A frame rate of the device, wherein the current flicker rate is related to a first flicker frequency corresponding to an ambient light and a second flicker frequency corresponding to the display device; the control circuit senses the main flicker frequency through the image sensor the first flicker frequency contributed by the ambient light; The second flicker frequency mainly contributed by the frame rate of the display device is sensed by the control circuit through the image sensor; the control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate; and the control circuit sends an adjustment request to the display device according to the current flicker rate, so as to increase the frame rate of the display device; wherein the first brightness feature includes a first average brightness of the first picture , the second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness is the user Not noticeable; where the user is not aware of is defined as: assuming that one of the first average brightness and the second average brightness is LD, then the other of the first average brightness and the second average brightness is not LD and between LD and i*LD, where i is a real number less than 1 and greater than 0; wherein PF=[(f2-f1)/(f2+f1)]*100% is calculated by the control circuit to obtain the The current flicker rate PF, where f1 is the first flicker frequency, and f2 is the second flicker frequency. The operation method as described in Claim 8, further comprising: adjusting the brightness of a display backlight to a first brightness state by the display device, so that the first picture presents the first brightness characteristic; The brightness of the display backlight is adjusted to a second brightness state so that the second picture presents the second brightness feature, wherein the first brightness state is different from the first brightness state Two brightness states. The operation method as described in claim 8, further comprising: sensing a previous brightness characteristic of a previous picture displayed by the display device through the image sensor by the control circuit; sensing by the control circuit through the image sensor Measure a current brightness characteristic of a current picture displayed by the display device, wherein the current picture is adjacent to the previous picture in time; compare the previous brightness characteristic with the current brightness characteristic by the control circuit; when the previous brightness characteristic is dark In the current brightness characteristic, one of the left-eye shutter part and the right-eye shutter part is controlled by the control circuit to be in the shielding state; and when the previous brightness characteristic is brighter than the current brightness characteristic, controlled by the control circuit The other of the left-eye shutter unit and the right-eye shutter unit is in the shielding state. A method for operating a three-dimensional image display system, comprising: a display device of the three-dimensional image display system alternately displays a first frame suitable for viewing by the left eye and a second frame suitable for viewing by the right eye in time sequence, wherein the A first brightness feature of the first frame is different from a second brightness feature of the second frame; a control circuit of a shutter glasses of the three-dimensional image display system senses the first brightness through an image sensor of the shutter glasses The first brightness feature of a frame and the second brightness feature of the second frame; when the image sensor senses the first brightness feature, a right-eye shutter part of the shutter glasses is controlled by the control circuit is a shielding state; when the image sensor senses the second brightness feature, it is controlled by the control circuit A left eye shutter of the shutter glasses is in the shielding state; a frame rate of the display device is increased according to a current flicker rate, wherein the current flicker rate is related to a first flicker frequency corresponding to an ambient light and A second flicker frequency corresponding to the display device; the first flicker frequency mainly contributed by the ambient light is sensed by the control circuit through the image sensor; sensed by the control circuit through the image sensor The second flicker frequency mainly contributed by the frame rate of the display device; the control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate; the control circuit calculates the current flicker rate according to the current flicker rate sending an adjustment request to the display device to increase the frame rate of the display device; comparing the current flicker rate with a first threshold by the control circuit; The adjustment request is sent to adjust the frame rate of the display device under the condition of a threshold value; wherein the first brightness characteristic includes a first average brightness of the first frame, and the second brightness characteristic includes a second average brightness of the second frame the average brightness, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness is imperceptible to the user; where imperceptible to the user is defined as: assuming One of the first average brightness and the second average brightness is LD, and the other of the first average brightness and the second average brightness is not LD and is between LD and i*LD, where i is less than 1 and A real number greater than 0. The operation method as described in claim 11 further includes: the control circuit sends the adjustment request to adjust the frame rate of the display device under the condition that the second flicker frequency is greater than or equal to a second threshold. A method for operating a three-dimensional image display system, comprising: a display device of the three-dimensional image display system alternately displays a first frame suitable for viewing by the left eye and a second frame suitable for viewing by the right eye in time sequence, wherein the A first brightness feature of the first frame is different from a second brightness feature of the second frame; a control circuit of a shutter glasses of the three-dimensional image display system senses the first brightness through an image sensor of the shutter glasses The first brightness feature of a frame and the second brightness feature of the second frame; when the image sensor senses the first brightness feature, a right-eye shutter part of the shutter glasses is controlled by the control circuit It is a shielding state; when the image sensor senses the second brightness characteristic, the control circuit controls a left-eye shutter portion of the shutter glasses to be in the shielding state; according to a current flicker rate, the display is enlarged A frame rate of the device, wherein the current flicker rate is related to a first flicker frequency corresponding to an ambient light and a second flicker frequency corresponding to the display device; the control circuit senses the main flicker frequency through the image sensor the first flicker frequency contributed by the ambient light; the second flicker frequency mainly contributed by the frame rate of the display device is sensed by the control circuit through the image sensor; The control circuit uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate; the control circuit sends an adjustment request to the display device according to the current flicker rate, so as to enlarge the frame of the display device The first flicker frequency mainly contributed by the ambient light is sensed by the control circuit through the image sensor; the first flicker frequency mainly contributed by the frame rate of the display device is sensed by the control circuit through the image sensor The second flicker frequency contributed; the control circuit provides the first flicker frequency and the second flicker frequency to the display device; the display device uses the first flicker frequency and the second flicker frequency to calculate the current flicker rate; and the display device increases the frame rate according to the current flicker rate; wherein the first brightness feature includes a first average brightness of the first frame, and the second brightness feature includes a first average brightness of the second frame Two average luminances, the first average luminance is different from the second average luminance, and the difference between the first average luminance and the second average luminance is imperceptible to the user; wherein imperceptible to the user is defined as: Assuming that one of the first average luminance and the second average luminance is LD, the other of the first average luminance and the second average luminance is not LD and is between LD and i*LD, where i is a real number less than 1 and greater than 0. A method for operating a three-dimensional image display system, comprising: A display device of the 3D image display system alternately displays a first picture suitable for viewing by the left eye and a second picture suitable for viewing by the right eye in time sequence, wherein a first brightness characteristic of the first picture is different from A second brightness feature of the second picture; a control circuit of a shutter glasses of the three-dimensional image display system senses the first brightness feature of the first picture and the second brightness feature of the first picture through an image sensor of the shutter glasses The second luminance feature of the two frames; when the image sensor senses the first luminance feature, the control circuit controls a right-eye shutter portion of the shutter glasses to be in a shielding state; when the image sensor senses the first luminance feature When the second brightness feature is sensed, the control circuit controls a left-eye shutter of the shutter glasses to be in the shielding state; a frame rate of the display device is increased according to a current flicker rate, wherein the current flicker rate A first flicker frequency corresponding to an ambient light and a second flicker frequency corresponding to the display device; the first flicker mainly contributed by the ambient light is sensed by the control circuit through the image sensor Frequency; the second flicker frequency mainly contributed by the frame rate of the display device is sensed by the control circuit through the image sensor; the control circuit uses the first flicker frequency and the second flicker frequency to calculate The current flicker rate; the control circuit sends an adjustment request to the display device according to the current flicker rate, so as to increase the frame rate of the display device; rate to adjust down the A detection frequency of the image sensor; and the detection frequency is reduced by the control circuit under the condition that the detection frequency is greater than or equal to the frame rate; wherein the first brightness feature includes a first image of the first frame Average brightness, the second brightness feature includes a second average brightness of the second picture, the first average brightness is different from the second average brightness, and the difference between the first average brightness and the second average brightness is The user is not aware of; where the user is not aware of is defined as: assuming that one of the first average brightness and the second average brightness is LD, then the other of the first average brightness and the second average brightness Not LD and between LD and i*LD, where i is a real number less than 1 and greater than 0.

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