CN102905148A - Mobile terminals and method for playing 3-dimensional (3D) video by same - Google Patents
Mobile terminals and method for playing 3-dimensional (3D) video by same Download PDFInfo
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Abstract
The invention discloses a method for playing 3-dimensional (3D) video by mobile terminals. The method includes that the two mobile terminals for playing the 3D video respectively obtain a left side video file and a right side video file of the 3D video. A main control mobile terminal of the two mobile terminals obtains clock difference between the main control mobile terminal and the other mobile terminal, determines the initial time for playing the left side video file and the right side video file by the two mobile terminals according to the clock difference and informs the other mobile terminal. The difference of the initial time for playing the left side video file and the right side video file by the two mobile terminals is identical with the clock difference, and the two mobile terminals respectively play the left side video file and the right side video file according to the determined initial time. The two mobile terminals are further disclosed. By means of the method and the mobile terminals, resolution rate, brightness and size of images can be maintained in playing of the 3D video, and video playing is easy to achieve.
Description
Technical Field
The present application relates to 3D video technologies, and in particular, to a mobile terminal and a method for playing a 3D video thereof.
Background
Currently, there are multiple implementation modes for video 3D technology: polarized, flash, and naked eye 3D. These different implementations and their respective advantages and disadvantages are briefly described below.
1) Polarizing type 3D
The polarization type 3D stereoscopic imaging technology is used for decomposing an original image by utilizing the principle that light has a vibration direction, and two pictures with different polarization directions can be conveyed to a viewer by adding a polarization plate on a display screen. When the picture passes through the polarized glasses, each lens of the polarized glasses can only receive the picture in one polarization direction, so that the left eye and the right eye of a person can receive two groups of pictures and then synthesize a stereoscopic image through the brain. However, the polarized light 3D technology adopts the principle of spectroscopic imaging, so that the resolution of the picture is halved, it is difficult to realize a real full-high-definition 3D image, and the brightness of the picture is reduced; meanwhile, the polarized 3D technology has high requirements for screens.
2) Flash 3D
The flash 3D mainly realizes a 3D effect by a refresh rate of a picture. The image is divided into two according to frames to form two groups of pictures corresponding to the left eye and the right eye, the two groups of pictures are continuously interlaced and displayed, and meanwhile, the infrared signal transmitter synchronously controls the left lens switch and the right lens switch of the shutter type 3D glasses, so that the left eye and the right eye can see the corresponding pictures at accurate moments. The method can keep the original resolution of the picture, so that a user can easily enjoy the real full-high-definition 3D effect without causing the reduction of the brightness of the picture. However, in general, the refresh rate of the 3D liquid crystal screen must reach 120Hz or more, that is, both the left and right eyes receive images with a frequency of 60Hz or more, so as to ensure that the user can see the continuous and non-glaring 3D image effect. Meanwhile, the shutter 3D technology realizes imaging of 3D stereoscopic images by continuously performing a high speed on/off state of a lens, and thus, a situation of dizziness or discomfort of eyes when watching a movie for a long time is bound to occur.
3) Naked eye 3D
The main techniques for naked eye 3D are optical barriers and lenticular lenses. The light barrier has a large brightness loss due to the shielding of the grating, and the resolution is also reduced. The lenticular lens is incompatible with the 2D screen process, the resolution is also reduced, and at the same time, the fineness of the picture is also reduced. Therefore, naked eye 3D has high requirements for screen technology, and is not mature at present.
4) Screen viewing mirror method
The method of the viewing mirror needs to display the left and right images on the screen at the same time, and the viewing mirror is used for translating and superposing the images on the two sides. The method has no brightness loss, no resolution loss, no flicker and low cost. However, since two images need to be displayed simultaneously, the size of the synthesized image is only half of the screen size.
As can be seen from the above, the four 3D video playing methods all have respective disadvantages, or the resolution, brightness, or size of the synthesized image may be lost, or the screen requirement is high and difficult to implement, or the visual fatigue is brought to the user.
Disclosure of Invention
The application provides a mobile terminal and a method for playing a 3D video, which can keep the resolution, brightness and size of an image and are convenient to implement.
A method for playing a 3D video by a mobile terminal comprises the following steps:
the method comprises the steps that two mobile terminals used for playing the 3D video respectively obtain left and right side video files of the 3D video;
the master control mobile terminal in the two mobile terminals obtains the clock difference between the master control mobile terminal and the other mobile terminal, determines the starting time of the two mobile terminals for playing the left and right side video files according to the clock difference, and informs the other mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference;
and the two mobile terminals respectively play the left and right side video files according to the determined starting time.
Preferably, the method further comprises: the master control mobile terminal periodically acquires a clock difference between the master control mobile terminal and another mobile terminal and sends the clock difference to the another mobile terminal; and the other mobile terminal compares the received current clock difference with the clock difference saved last time, and adjusts the video file playing of the other mobile terminal according to the received current clock difference when the received current clock difference is different from the clock difference saved last time.
Preferably, the acquiring, by the master mobile terminal, the clock difference between the master mobile terminal and the other mobile terminal includes:
the master control mobile terminal sends a synchronization frame to the other mobile terminal, and carries time information timestamp1 when the synchronization frame is sent;
the other mobile terminal receives the synchronous frame, records the time information timestamp2 of the received synchronous frame, feeds back a synchronous response frame to the master control mobile terminal, and carries the timestamp2 and the time information timestamp3 of the sent synchronous response frame in the synchronous response frame;
the master control mobile terminal receives the synchronous response frame and records receiving time information timestamp 4; calculating the clock difference delta according to the timestamp2, the timestamp3, the timestamp1 and the timestamp4 carried in the synchronous response framets。
Preferably, the transmission of the clock difference, the synchronization frame and the synchronization response frame is performed by means of bluetooth, WiFi or wired connection.
Preferably, the two mobile terminals respectively acquiring left and right side video files of the 3D video includes:
pre-storing left and right side video files on the two mobile terminals;
or,
and the other mobile terminal is used as a streaming media client to obtain the left side or right side video file corresponding to the mobile terminal from the master control mobile terminal.
Preferably, the left or right video file is acquired by means of bluetooth, WiFi or wired connection.
A mobile terminal, comprising: the device comprises a storage unit, a clock difference acquisition unit and a playing unit; when the mobile terminal is used as a master mobile terminal for 3D video playing,
the storage unit is used for storing a left side or right side video file of the 3D video;
the clock difference acquisition unit is used for acquiring the clock difference between the mobile terminal and the other mobile terminal for 3D video playing, determining the starting time of the left-side and right-side video playing of the mobile terminal according to the clock difference, and respectively informing the playing unit and the other mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference;
and the playing unit is used for playing the left side or the right side video file according to the starting time for playing the left side or the right side video file sent by the clock difference acquisition unit.
Preferably, the mobile terminal further comprises a streaming media server unit; when the mobile terminal is used as a non-master mobile terminal for 3D video playing,
the storage unit is further used for storing a right side or left side video file of the 3D video;
the streaming media server unit is configured to provide the right side or left side video file played by the other mobile terminal and stored in the storage unit to the other mobile terminal.
Preferably, the clock difference obtaining unit further sends the obtained clock difference to the other mobile terminal before the video file starts to be played; and the clock difference is periodically acquired in the video file playing process and is sent to the other mobile terminal.
A mobile terminal, comprising: the device comprises a storage unit, a synchronous control unit and a playing unit; when the mobile terminal is used as a non-master mobile terminal for 3D video playing,
the storage unit is used for storing or caching a right side or left side video file of the 3D video;
the synchronous control unit is used for providing clock information for a main control mobile terminal for playing the 3D video, and the clock information is used for the main control mobile terminal to determine the clock difference between the main control mobile terminal and the main control mobile terminal; the master control mobile terminal is also used for receiving the starting time of the right side or left side video playing determined according to the clock difference and transmitted by the master control mobile terminal, and forwarding the starting time to the playing unit;
and the playing unit is used for playing the right side or left side video file according to the starting time for playing the right side or left side video file sent by the synchronous control unit.
Preferably, the mobile terminal further comprises a streaming media client unit; and when the mobile terminal is used as a non-main control mobile terminal for playing the 3D video, the streaming media client unit is used for continuously acquiring the right side or left side video file from the main control mobile terminal and caching the right side or left side video file into the storage unit.
Preferably, the synchronization control unit is configured to receive and store a clock difference sent by the master mobile terminal before the video file is played; the main control mobile terminal is also used for receiving the clock difference periodically acquired by the main control mobile terminal in the video file playing process, comparing the clock difference received this time with the stored clock difference, if the clock difference changes, updating the stored clock difference into the clock difference received this time, and informing the playing unit of the change of the clock difference;
and the playing unit is used for adjusting the playing of the right side or the left side video file according to the change of the clock difference sent by the synchronous control unit.
According to the technical scheme, the two mobile terminals for playing the 3D video respectively acquire left and right side video files of the 3D video; the master control mobile terminal in the two mobile terminals obtains the clock difference between the master control mobile terminal and the other mobile terminal, determines the starting time of playing the left and right side video files of the two mobile terminals according to the clock difference, and informs the other mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference, so that the playing synchronization of the left and right side video files is ensured. Then, the two mobile terminals respectively play the left and right side video files according to the determined starting time. By the mode, the two mobile terminals can synchronously play the left and right side video files of the 3D video, so that the two mobile terminals can be used for realizing the 3D video playing in a screen viewing mirror mode. The method not only ensures that the size of the picture is the same as the size of a screen of a mobile terminal, but also has no loss of brightness and resolution, has low requirement on the screen, and is easy and simple.
Drawings
Fig. 1 is a detailed flowchart of 3D video playing performed by two mobile terminals in the present application;
fig. 2 is a schematic diagram of a specific structure of a master control mobile terminal and a non-master control mobile terminal in the present application.
Detailed Description
For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.
The basic idea of the application is: the two mobile terminals are utilized to play the 3D video in a screen viewing mirror mode, and each mobile terminal plays the video file on the left side and the right side, so that the size of the synthesized 3D image is the same as that of one mobile terminal, and no loss is caused to brightness and resolution.
Fig. 1 is a specific flowchart of playing a 3D video by two mobile terminals in the present application. And one of the two mobile terminals is used as a main control mobile terminal and is used for controlling the synchronous playing of the 3D video. As shown in fig. 1, the method includes:
According to the 3D video playing mode of the viewing mirror, the 3D video is divided into two video files on the left side and the right side, and one of the two video files is played by the two mobile terminals respectively. The two mobile terminals respectively acquire left or right video files to be played.
The specific acquisition mode can be that the left video file and the right video file are respectively stored in the two mobile terminals in advance; or, the main control mobile terminal may store the left and right video files, the main control mobile terminal serves as a streaming media server, and the other mobile terminal serves as a streaming media client to obtain the video file to be played from the main control mobile terminal for caching and playing. The transmission of the video file can be realized through any connection between the two servers, such as bluetooth, WiFi or direct wired connection. How to obtain the corresponding video file in a streaming media server and client belongs to a common technical means of those skilled in the art, and therefore, details are not repeated here.
Since the two mobile terminals have respective clocks and are time-stamped with the respective clocks. However, the time of the clock of different mobile terminals may be different, so that in order to implement that two mobile terminals play video files at the same absolute time, thereby ensuring the synchronous playing of the video files on the left and right sides, the clock difference between the mobile terminals and the other mobile terminal needs to be obtained.
The specific acquisition mode can be as follows:
a. the master control mobile terminal A sends a 3D synchronous frame to another mobile terminal B, and carries timestamp information 1 when sending the frame;
b. the mobile terminal B receives the 3D synchronous frame and records the received timestamp information timestamp2, feeds back a 3D synchronous response frame to the mobile terminal A, and carries the timestamp information timestamp3 and the recorded timestamp2 when in transmission;
c. the mobile terminal A receives the 3D synchronous response frame, extracts the timestamp2 and the timestamp3 carried in the 3D synchronous response frame, and records timestamp information timestamp4 of the received 3D synchronous response frame;
d. the mobile terminal A calculates the clock difference delta according to the timemap 1, 2, 3 and 4ts；
In consideration of the fact that the transmission delay between the mobile terminal a and the mobile terminal B is much smaller than the time difference that can be recognized by human eyes, the transmission delay between the mobile terminal a and the mobile terminal B can be directly ignored, and specifically, the clock difference Δ can be calculated in the following mannerts＝(timestamp2-timestamp1+timestamp4-timestamp3)÷2。
In addition, the transmission of the synchronization frame and the synchronization response frame in the above steps a-c can be implemented by any connection between the two servers, such as bluetooth, WiFi, or direct wired connection.
And 103, the master control mobile terminal determines the starting time of the two mobile terminals for playing the left and right side video files according to the clock difference, and sends the playing starting time of the other mobile terminal to the other mobile terminal.
Wherein, the difference of the starting time of the two mobile terminals for playing the left and right side video files is the same as the clock difference determined in step 102. The transmission of the clock difference may be achieved by any connection between the two servers, such as bluetooth, WiFi or a direct wired connection, etc.
And step 104, the two mobile terminals play the corresponding video files according to the respective video file playing start time determined in step 103.
The start times of the two mobile terminals respectively playing determined in the above step 103 are actually the same absolute time. In this way, the video is played according to the start time, and the user can simultaneously receive the video images on the left and right sides.
Further, considering that the clock speeds of different mobile terminals may be different, in order to ensure that the synchronous playing of the two mobile terminals is always maintained in the playing process of the video file, preferably, when the master control mobile terminal sends the playing start time to the other mobile terminal in step 103, the initial clock difference calculated by the master control mobile terminal is further carried, then, the measurement of the clock difference is periodically performed through the following step 105 and step 106, and the playing of the video file is timely adjusted.
And 105, the master control mobile terminal periodically executes the step 102, acquires the current clock difference and sends the clock difference to another mobile terminal.
And step 106, the other mobile terminal compares the received clock difference with the stored clock difference, and when the clock difference changes, the other mobile terminal adjusts the playing of the video file according to the received clock difference.
Through the processing in step 105 and step 106, it can be ensured that the synchronous playing is ensured in the whole playing process of the 3D video.
So far, the 3D video playing method in the present application ends. Certainly, in the playing process, the user needs to adjust the angle of the viewing mirror, so that the pictures played by the dual-user terminal are completely overlapped. The method can be used for adjusting after the video starts to be played, and can also be used for playing the test image before the formal video file starts to be played for the user to adjust the angle. The specific adjustment process is the same as the adjustment process of the existing 3D video watching method using a screen viewing mirror, and is not described here again.
The application also provides a main control mobile terminal and a non-main control mobile terminal for playing the 3D video, and the two mobile terminals are matched with each other and can be used for implementing the 3D video playing method. Fig. 2 is a schematic structural diagram of the two mobile terminals, which respectively play video files on left and right sides. As shown in fig. 2, basically, the main control mobile terminal includes: a storage unit 1, a clock difference acquisition unit, and a playback unit 1.
A storage unit 1 for saving a left (or right) video file of the 3D video. The device comprises a clock difference acquisition unit, a display unit and a control unit, wherein the clock difference acquisition unit is used for acquiring the clock difference between the device and a non-master control mobile terminal for 3D video playing, determining the starting time of left-side and right-side video playing of the device and the non-master control mobile terminal according to the clock difference, and respectively informing the playing unit and the non-master control mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference. The playing unit 1 is configured to play the left (or right) video file according to the start time of playing the left (or right) video file sent by the clock difference obtaining unit.
Accordingly, at its most basic, a non-master mobile terminal includes: a storage unit 2, a synchronization control unit and a playback unit 2.
The storage unit 2 is configured to store or cache a right (or left) video file of the 3D video. The synchronous control unit is used for providing clock information for a main control mobile terminal for playing the 3D video, and the clock information is used for the main control mobile terminal to determine the clock difference between the main control mobile terminal and the main control mobile terminal; and the main control mobile terminal is also used for receiving the starting time of the right (or left) video playing determined according to the clock difference and transmitted to the playing unit. And the playing unit 2 is used for playing the right (or left) video file according to the starting time of playing the right (or left) video file sent by the synchronous control unit.
The above is the basic structure of the mobile terminal. The source of the video file stored in the storage unit can be pre-stored in the corresponding storage unit, or can be acquired by streaming media through real-time transmission.
Specifically, in order to enable the non-master control mobile terminal to obtain the video file to be played in a streaming media transmission manner, preferably, the master control mobile terminal and the non-master control mobile terminal may further include a streaming media server unit and a streaming media client unit, respectively.
For the main control mobile terminal, the storage unit 1 is further configured to store a side video file to be played by a non-main control mobile terminal. And the streaming media server unit is used for providing the video file at one side played by the non-main control mobile terminal stored in the storage unit for the non-main control mobile terminal.
For the non-main control mobile terminal, the streaming media client unit is used as a streaming media client to continuously obtain the video file of the side to be played from the main control mobile terminal, and cache the video file in the storage unit 2.
In addition, in order to realize synchronous calibration in the video file playing process, preferably, the clock difference acquisition unit of the master control mobile terminal further sends the acquired clock difference to the non-master control mobile terminal before the video file starts to be played; and the clock difference acquisition module is also used for periodically acquiring the clock difference in the video file playing process and sending the clock difference to the non-master control mobile terminal. The non-master control mobile terminal synchronous control unit is used for receiving and storing the clock difference sent by the master control mobile terminal before the video file is played; the main control mobile terminal is also used for receiving the clock difference periodically acquired by the main control mobile terminal in the video file playing process, comparing the clock difference received this time with the stored clock difference, if the clock difference changes, updating the stored clock difference into the clock difference received this time, and informing the playing unit of the change of the clock difference; and the play unit of the non-master control mobile terminal is used for adjusting the play of the right (or left) video file according to the change of the clock difference sent by the synchronous control unit.
The foregoing is a specific structure of the main control mobile terminal and the non-main control mobile terminal provided in the present application. Of course, in practical application, the two structures may be integrated into one mobile terminal, so that the mobile terminal may be used as a main control mobile terminal or a non-main control mobile terminal.
According to the specific implementation of the application, when the 3D video playing is realized by using the double mobile terminals, no special requirements are required on the screen of the mobile terminal, no polarizing film is required, and no naked eye type complex screen process is required. Expensive flash glasses are not needed, the color is full, the brightness and the resolution are not lost, and the perfect 3D effect is really achieved. Meanwhile, the screen viewing mirror is a plane mirror, so that the glasses are not damaged when the user watches the screen viewing mirror for a long time. Furthermore, the synchronization process between the two mobile terminals can be used for not only playing 3D video, but also sharing and synchronizing (2D video, audio) play between the two mobile terminals.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. A method for playing a 3D video by a mobile terminal is characterized by comprising the following steps:
the method comprises the steps that two mobile terminals used for playing the 3D video respectively obtain left and right side video files of the 3D video;
the master control mobile terminal in the two mobile terminals obtains the clock difference between the master control mobile terminal and the other mobile terminal, determines the starting time of the two mobile terminals for playing the left and right side video files according to the clock difference, and informs the other mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference;
and the two mobile terminals respectively play the left and right side video files according to the determined starting time.
2. The method of claim 1, further comprising: the master control mobile terminal periodically acquires a clock difference between the master control mobile terminal and another mobile terminal and sends the clock difference to the another mobile terminal; and the other mobile terminal compares the received current clock difference with the clock difference saved last time, and adjusts the video file playing of the other mobile terminal according to the received current clock difference when the received current clock difference is different from the clock difference saved last time.
3. The method according to claim 1 or 2, wherein the master mobile terminal obtaining the clock difference between itself and another mobile terminal comprises:
the master control mobile terminal sends a synchronization frame to the other mobile terminal, and carries time information timestamp1 when the synchronization frame is sent;
the other mobile terminal receives the synchronous frame, records the time information timestamp2 of the received synchronous frame, feeds back a synchronous response frame to the master control mobile terminal, and carries the timestamp2 and the time information timestamp3 of the sent synchronous response frame in the synchronous response frame;
the master control mobile terminal receives the synchronous response frame and records receiving time information timestamp 4; calculating the clock difference delta according to the timestamp2, the timestamp3, the timestamp1 and the timestamp4 carried in the synchronous response framets。
4. The method of claim 3, wherein the transmission of the clock difference, the synchronization frame, and the synchronization response frame is performed by means of Bluetooth, WiFi, or a wired connection.
5. The method according to claim 1, wherein the two mobile terminals respectively acquiring left and right side video files of the 3D video comprises:
pre-storing left and right side video files on the two mobile terminals;
or,
and the other mobile terminal is used as a streaming media client to obtain the left side or right side video file corresponding to the mobile terminal from the master control mobile terminal.
6. The method of claim 5, wherein the left or right video file is obtained by means of Bluetooth, WiFi or wired connection.
7. A mobile terminal, characterized in that the mobile terminal comprises: the device comprises a storage unit, a clock difference acquisition unit and a playing unit; when the mobile terminal is used as a master mobile terminal for 3D video playing,
the storage unit is used for storing a left side or right side video file of the 3D video;
the clock difference acquisition unit is used for acquiring the clock difference between the mobile terminal and the other mobile terminal for 3D video playing, determining the starting time of the left-side and right-side video playing of the mobile terminal according to the clock difference, and respectively informing the playing unit and the other mobile terminal; the starting time difference of the two mobile terminals for playing the left and right side video files is the same as the clock difference;
and the playing unit is used for playing the left side or the right side video file according to the starting time for playing the left side or the right side video file sent by the clock difference acquisition unit.
8. The mobile terminal of claim 7, wherein the mobile terminal further comprises a streaming media server unit; when the mobile terminal is used as a non-master mobile terminal for 3D video playing,
the storage unit is further used for storing a right side or left side video file of the 3D video;
the streaming media server unit is configured to provide the right side or left side video file played by the other mobile terminal and stored in the storage unit to the other mobile terminal.
9. The mobile terminal according to claim 7 or 8, wherein the clock difference obtaining unit further sends the obtained clock difference to the other mobile terminal before the video file starts to be played; and the clock difference is periodically acquired in the video file playing process and is sent to the other mobile terminal.
10. A mobile terminal, characterized in that the mobile terminal comprises: the device comprises a storage unit, a synchronous control unit and a playing unit; when the mobile terminal is used as a non-master mobile terminal for 3D video playing,
the storage unit is used for storing or caching a right side or left side video file of the 3D video;
the synchronous control unit is used for providing clock information for a main control mobile terminal for playing the 3D video, and the clock information is used for the main control mobile terminal to determine the clock difference between the main control mobile terminal and the main control mobile terminal; the master control mobile terminal is also used for receiving the starting time of the right side or left side video playing determined according to the clock difference and transmitted by the master control mobile terminal, and forwarding the starting time to the playing unit;
and the playing unit is used for playing the right side or left side video file according to the starting time for playing the right side or left side video file sent by the synchronous control unit.
11. The mobile terminal of claim 10, wherein the mobile terminal further comprises a streaming client unit; and when the mobile terminal is used as a non-main control mobile terminal for playing the 3D video, the streaming media client unit is used for continuously acquiring the right side or left side video file from the main control mobile terminal and caching the right side or left side video file into the storage unit.
12. The mobile terminal according to claim 10 or 11, wherein the synchronization control unit is configured to receive and store the clock difference sent by the master mobile terminal before the video file is played; the main control mobile terminal is also used for receiving the clock difference periodically acquired by the main control mobile terminal in the video file playing process, comparing the clock difference received this time with the stored clock difference, if the clock difference changes, updating the stored clock difference into the clock difference received this time, and informing the playing unit of the change of the clock difference;
and the playing unit is used for adjusting the playing of the right side or the left side video file according to the change of the clock difference sent by the synchronous control unit.
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| CN104467928A (en) * | 2013-09-18 | 2015-03-25 | 华为技术有限公司 | Method and equipment for cooperation between terminal equipment |
| CN104539933A (en) * | 2014-12-30 | 2015-04-22 | 北京奇艺世纪科技有限公司 | Stereoscopic video playing method and system |
| CN106454421A (en) * | 2016-10-08 | 2017-02-22 | 广东欧珀移动通信有限公司 | Clock adjusting method, device and terminal thereof, and multimedia synchronization playing system |
| WO2017041455A1 (en) * | 2015-09-10 | 2017-03-16 | 京东方科技集团股份有限公司 | 3d play system |
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| CN104467928B (en) * | 2013-09-18 | 2018-08-14 | 华为技术有限公司 | A kind of method and apparatus to cooperate between terminal device |
| CN104539933A (en) * | 2014-12-30 | 2015-04-22 | 北京奇艺世纪科技有限公司 | Stereoscopic video playing method and system |
| WO2017041455A1 (en) * | 2015-09-10 | 2017-03-16 | 京东方科技集团股份有限公司 | 3d play system |
| US11102469B2 (en) | 2015-09-10 | 2021-08-24 | Boe Technology Group Co., Ltd. | 3D play system |
| CN106454421A (en) * | 2016-10-08 | 2017-02-22 | 广东欧珀移动通信有限公司 | Clock adjusting method, device and terminal thereof, and multimedia synchronization playing system |
| CN106454421B (en) * | 2016-10-08 | 2019-07-16 | Oppo广东移动通信有限公司 | A kind of clock adjustment, device, terminal and multimedia synchronous play system |
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