The present disclosure relates to the technical field of 3D display, and particularly, relates to a shutter glasses and a control system and method for controlling the same.
With rapid development of 3D display technologies and gradual maturity of product lines, the 3D stereographic display technologies have become one focus of development of flat-panel displays. At present, the mainstream 3D display technologies on the market include a chromatic aberration technology, a polarizing technology, a 3D shutter glasses technology and a naked eye 3D technology. In these technologies, the 3D shutter glasses technology is widely accepted by the market due to its advantages of predominant three-dimensional effect, high picture resolution, lower cost of liquid crystal module and the like.
According to the 3D shutter glasses type technology, a frame of image is split into two frames of images corresponding to the left eye and the right eye respectively, and the two frames of images are continuously and alternately displayed on a liquid crystal display screen to synchronously control opening and closing of lenses of a shutter glasses. Thus, both the left and right eyes can see the corresponding images at appropriate time. Finally, the two different images seen by the left and right eyes synthetically form the three-dimensional effect of the original image in the brain.
When a 2D mode is switched to a 3D mode, the 3D shutter glasses may have 50% of error rate, specifically as shown in
The above-mentioned two conditions are caused by reasons that the statuses of the Glass are different before reset in case 1 and case 2. The TV could unconditionally start from designated pictures after reset, such as the left eye pictures, however, a control unit (as shown in
Therefore, how to solve the above-mentioned problems so as to eliminate the dislocation phenomenon of the 3D shutter glasses when the 2D mode is switched to the 3D mode and thereby reducing dizziness and discomfort of the user due to the dislocation phenomenon is one of problems dedicated in the industry.
One of the technical problems to be solved in the present disclosure is to provide a control system for controlling a shutter glasses, which may effectively eliminate a dislocation phenomenon of the 3D shutter glasses when a 3D mode is enabled and thereby reducing dizziness and discomfort of a user due to the dislocation phenomenon. The present disclosure also relates to a control method for controlling a shutter glasses and the shutter glasses.
To solve the above-mentioned technical problem, the present disclosure provides a system for controlling a shutter glasses, including: a receiver, for receiving a 3D_Enable signal and a SW signal with a set frequency, wherein the SW signal alternately correspond to a left image signal or a right image signal according to the set frequency, and the SW signal is reset when the 3D_Enable signal is in high level; a timer, coupled to the receiver, for timing from the moment when the 3D_Enable signal is in high level, and retiming once the SW signal triggered by a positive source is detected; and a resetter, coupled to the timer, for resetting left and right shutter control signals, if the time counted by the timer until the SW signal triggered by a positive source comes is longer than a set time, at the moment when the SW signal is triggered by a positive source, so that opening of left and right shutters of the shutter glasses synchronizes with the left and right eye image signals.
In an embodiment, the set time is longer than the inverse of the set frequency and shorter than the reset time of the STV signal.
In an embodiment, the set time is in range of 8.3 ms to 50 ms.
In an embodiment, the control system is implemented with an FPGA chip.
According to one aspect of the present disclosure, a shutter glasses including the above-mentioned control system is also provided.
According to another aspect of the present disclosure, a method for controlling the shutter glasses is also provided, including: a receiving step of receiving a 3D_Enable signal and a STV signal with a set frequency, wherein the SW signal alternately correspond to a left eye image signal or a right eye image signal according to the set frequency, and the STV signal is reset when the 3D_Enable signal is in high level; a timing step of timing from the moment when the 3D_Enable signal is in high level, and retiming once the STV signal triggered by a positive source is detected; and a resetting step of resetting left and right shutter control signals at the moment when the STV signal is triggered by a positive source if the time counted by the timer until the SW signal triggered by a positive source comes is longer than a set time, so that opening of left and right shutters of the shutter glasses synchronizes with the left and right eye image signals.
Compared with the prior art, one or more embodiments of the present disclosure may have the following advantages.
According to the present disclosure, a mechanism for detecting 3D enabling signals is added into the system for controlling 3D shutter glasses. The mechanism determines whether the duration from the moment when the 3D enabling signal is detected to be in high level to the moment when the start vertical (SW) signal is triggered by a positive source is longer than a set value. When the duration is longer than the set value, the left and right shutter control signals of the 3D shutter glasses are reset, such that openings of left and right shutters synchronize with the left and right eye image signals. Therefore, a dislocation phenomenon of the 3D shutter glasses may be effectively eliminated, and thus dizziness and discomfort of a user due to the dislocation phenomenon are reduced.
Other features and advantages of the present disclosure will be set forth in the following description, and partially become apparent from the description or may be understood through implementing the present disclosure. The objectives and other advantages of the present disclosure may be realized and obtained through the structures specified in the description, claims, and accompanying drawings.
The accompanying drawings are provided for further understanding the present disclosure, constitute a part of the description, and are used for interpreting the present disclosure together with the embodiments of the present disclosure, rather than limiting the present disclosure. In the accompanying drawings:
To make the objectives, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be further discussed in detail below in conjunction with the accompanying drawings.
Referring to
From
The receiver 40 receives a 3D_Enable signal and a STV signal with a set frequency (such as 120 Hz). As shown in
The timer 41, being coupled to the receiver 40, is used for timing from the moment when the 3D_Enable signal is in high level, and retiming once the SW signal triggered by a positive source is detected. As shown in
The resetter 42 is coupled to the timer 41, and resets the left and right shutter control signals, if the time counted by the timer 41 until a SW signal is triggered by a positive source is longer than a set time, at the moment when the SW signal is triggered by the positive source, so that openings of the left and right shutter of the shutter glasses are synchronized with the left and right eye image signals.
Preferably, the set time is longer than the inverse of the set frequency of the SW signal and shorter than the reset time of the SW signal. In this embodiment, when the set frequency is 120 Hz, the reset time of the SW signal is about 50 ms, and the set time may be longer than 1/120 s (about 8.3 ms) and shorter than 50 ms.
In this embodiment, the set time is 10 ms, and if the duration of the first timing by the timer 41 is more than 10 ms, the STV signal is reset. The moment of the STV signal firstly being triggered by a positive source after the reset, corresponds to a designated image signal (generally a left eye image signal), that is, the TV picture will be started from the designated picture, such as the left eye picture shown in
The receiver 40 receives the 3D_Enable signal and the SW signal with a set frequency (S610), the SW signal alternately corresponding to a left eye image signal and a right eye image signal according to the set frequency, wherein when the 3D_Enable signal is of high level, the SW signal enters a reset status.
The timer 41 starts to time from the moment when the 3D_Enable signal is in high level, and retimes once the SW signal triggered by a positive source is detected (S620).
If the time started by the timer 41 until the SW signal triggered by a positive source comes is longer than a set time, then the resetter 42 resets the left and right shutter control signals at the moment when a STV signal is triggered by a positive source (S630), so that openings of the left and right shutter of the shutter glasses are synchronized with the left and right eye image signals.
According to the present disclosure, a mechanism for detecting 3D enabling signals is applied to the system for controlling 3D shutter glasses. The mechanism determines whether the duration from the moment when the 3D enabling signal is in high level to the moment when the start vertical (STV) signal is triggered by a positive source is longer than a set value. The left and right shutter control signals of the 3D shutter glasses are reset when the duration is longer than the set value, so that openings of left and right shutters synchronize with left and right eye image signals. Therefore, dislocation phenomenon of the 3D shutter glasses may be effectively eliminated, and thus dizziness and discomfort of a user due to the dislocation phenomenon are reduced.
Although the foregoing descriptions are preferred specific embodiments of the present disclosure, the protection scope of the present disclosure is not limited thereto. Any variations or alternatives, readily conceivable by peoples familiar with this art within the disclosed technical scope of the present disclosure, shall be incorporated into the protection scope of the present disclosure. Accordingly, the protection scope of the present disclosure should be subjected to the protection scope of the claims.
Number | Date | Country | Kind |
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201310312382.7 | Jul 2013 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN14/70821 | 1/17/2014 | WO | 00 |