CN110995959B - Method and device for synchronously displaying information on double screens - Google Patents
Method and device for synchronously displaying information on double screens Download PDFInfo
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- CN110995959B CN110995959B CN201911420517.5A CN201911420517A CN110995959B CN 110995959 B CN110995959 B CN 110995959B CN 201911420517 A CN201911420517 A CN 201911420517A CN 110995959 B CN110995959 B CN 110995959B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
Abstract
The present disclosure provides a method and apparatus for synchronizing dual-screen display information. The method comprises the following steps: respectively receiving first display information and second display information; sequentially acquiring a time threshold value of each packet according to a preset packet interval value; and sequentially generating corresponding synchronous data packets for each group of the first display information and the second display information meeting the packet time threshold range, and respectively marking time stamps on the first display information and the second display information corresponding to the marking moment in each synchronous data packet. And the first display information and the second display information are simultaneously generated into a synchronous data packet, so that the display effect of double-screen display is ensured. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, and the synchronous error is limited in the synchronous data packets, so that the accuracy of synchronous double-screen display information is improved.
Description
Technical Field
The disclosure relates to the technical field of computers, in particular to a method and a device for synchronously displaying information on two screens.
Background
With the development of the internet, the online teaching can lead excellent teachers to give lessons in a centralized way, the number of students attending lessons is not limited by places, the time of attending lessons is flexible, and a plurality of advantages such as repeated watching and learning can be achieved, so that the online teaching becomes a development trend gradually. Especially for training institutions, the teaching aid is an important teaching means.
In online teaching, the double-screen online teaching is increasingly popular with students due to the harmonious and lively classroom contents.
The double-screen online teaching is to display two different information sources related to the teaching content of the teacher to students simultaneously through the network. For example, one display screen displays instructional content and another display screen displays augmentation content associated with the instructional content; or one display screen displays the teaching image of an excellent teacher, and the other display screen displays the synchronous teaching content of the teacher. Thereby achieving the teaching effect of sound, emotion and vivid image. The double-screen online teaching is suitable for live broadcasting, and the live broadcasting can ensure the synchronization of double-screen display information.
For courses such as vocational training, the sources of students are various, and a flexible on-line lesson listening mechanism is needed to ensure that the students can successfully complete the learning task. Recorded broadcast is a flexible online teaching mechanism which is ubiquitous at present. That is, the teaching contents of the teacher are recorded in advance, and the students can study the courseware at any time according to the actual needs.
However, how to ensure the synchronous playing of the two recorded information sources in the double-screen online teaching is a premise for ensuring the teaching effect.
Disclosure of Invention
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
An object of the present disclosure is to provide a method, an apparatus, a medium, and an electronic device for synchronizing dual-screen display information, which can solve at least one of the above-mentioned technical problems. The specific scheme is as follows:
according to a specific implementation manner of the present disclosure, in a first aspect, the present disclosure provides a method for synchronizing information displayed on two screens, which is applied to a synchronization device of an acquisition end, and includes:
respectively receiving first display information and second display information;
sequentially acquiring a time threshold value of each packet according to a preset packet interval value;
and sequentially generating corresponding synchronous data packets from each group of the first display information and the second display information which meet the packet time threshold range, and respectively marking the first display information and the second display information corresponding to the marking time in each synchronous data packet with time stamps.
According to a second aspect, the present disclosure provides an apparatus for synchronizing information displayed on two screens, including:
a receiving unit for receiving the first display information and the second display information, respectively;
a packet time threshold value obtaining unit, configured to obtain each packet time threshold value in sequence according to a preset packet interval value;
and the time stamp marking unit is used for sequentially generating corresponding synchronous data packets from each group of the first display information and the second display information meeting the packet time threshold range, and respectively marking time stamps on the first display information and the second display information corresponding to the marking time in each synchronous data packet.
According to a specific implementation manner of the present disclosure, in a third aspect, the present disclosure provides a method for synchronizing dual-screen display information, which is applied to a playing device at a playing end, and includes:
sequentially acquiring synchronous data packets;
analyzing the synchronous data packets in sequence to obtain corresponding first display information and second display information;
and controlling the first display information to be displayed on a first display screen and controlling the second display information to be displayed on a second display screen in each synchronous data packet according to the matching relation between the timestamp of the first display information and the timestamp of the second display information and a time axis.
According to a fourth aspect, the present disclosure provides an apparatus for synchronizing information displayed on two screens, including:
the synchronous data packet acquisition unit is used for sequentially acquiring synchronous data packets;
the analysis unit is used for sequentially analyzing the synchronous data packets to acquire corresponding first display information and second display information;
and the display unit is used for controlling the first display information to be displayed on a first display screen and controlling the second display information to be displayed on a second display screen in each synchronous data packet according to the matching relation between the time stamp of the first display information and the time stamp of the second display information and a time axis.
Compared with the prior art, the scheme of the embodiment of the disclosure at least has the following beneficial effects:
the present disclosure provides a method and apparatus for synchronizing dual-screen display information. And the first display information and the second display information are simultaneously generated into a synchronous data packet, so that the display effect of double-screen display is ensured. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, and the synchronous error is limited in the synchronous data packets, so that the accuracy of synchronous double-screen display information is improved. In the synchronization packet, not only the start time of the discontinuous display information but also the corresponding time of the continuous display information are marked with the synchronization time stamp. Therefore, the synchronous display effect of double-screen display can be ensured.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale. In the drawings:
FIG. 1 illustrates a flow chart of a method of synchronizing dual screen display information in accordance with an embodiment of the present disclosure;
FIG. 2 illustrates a schematic diagram of a marking instant of a method of synchronizing dual screen display information in accordance with an embodiment of the present disclosure;
FIG. 3 illustrates a block diagram of elements of an apparatus for synchronized dual screen display of information in accordance with an embodiment of the present disclosure;
FIG. 4 illustrates a flow chart of another method of synchronizing dual screen display information in accordance with an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a timeline of another method of synchronizing dual-screen display information according to an embodiment of the present disclosure;
fig. 6 shows a block diagram of elements of another apparatus for synchronized dual screen display of information according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.
It should be understood that the various steps recited in the method embodiments of the present disclosure may be performed in a different order, and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present disclosure is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.
It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.
The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.
Alternative embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
For the first embodiment provided by the present disclosure, that is, the embodiment of the method for synchronizing information displayed on two screens, the embodiment of the present disclosure is applied to a synchronization device at an acquisition end.
The embodiments of the present disclosure are described in detail below with reference to fig. 1.
Step S101, respectively receiving first display information and second display information.
The first display information and the second display information come from two different display information sources respectively. For example, the first display information is from a real-time video recording information that a teacher gives a lecture, the second display information is from a computer that plays a presentation associated with the lecture, and the second display information is the presentation information.
And S102, sequentially acquiring time threshold values of all packets according to a preset packet interval value.
The preset packet interval value is used to define the frequency of generating the synchronization data packets. For example, if the predetermined packet interval value is set to 2 minutes, then
The packet time threshold for the first isochronous packet is: less than or equal to 2 minutes;
the packet time threshold for the second isochronous packet is: greater than 2 minutes and less than or equal to 4 minutes;
the packet time threshold for the third isochronous packet is: greater than 4 minutes and less than or equal to 6 minutes;
and so on.
Step S103, sequentially generating each group of the first display information and the second display information that satisfy the packet time threshold range into a corresponding synchronous data packet, and respectively marking a timestamp on the first display information and the second display information corresponding to the marking time in each synchronous data packet.
For computational convenience, the timestamp may be defined as the time from the earliest time of receiving the display information to the time of marking. The display information includes both the first display information and the second display information. For example, continuing the above example, the real-time recording is started at the earliest, and the time when the video recording information starts to be received is set as the earliest time when the display information is received, only when the presentation is started to be opened according to the progress of the lecture during the course of the lecture.
Time information is relatively accurate information in a computer. A clock server exists in the Internet to provide time synchronization for computers around the world, but due to the fact that network environments are different, the time obtained from the clock server cannot be guaranteed to be accurate to a certain extent. The embodiment of the present disclosure only needs one relative time, and the time is not accurate, so the marking time in the embodiment of the present disclosure is derived from the clock of the synchronization apparatus. The interference of external factors on the acquisition of the marking time is avoided. The accuracy of the time stamp is improved.
Referring to fig. 2, the marked time includes at least one of the following times:
the first time is the starting time of the synchronous data packet;
a second time point which is a start time point of the first display information which is not continuous in the synchronization packet;
the third time is a start time of the second display information that is not consecutive in the synchronization packet.
The first time is to ensure that the sync packet starts to be displayed at the correct time when displayed.
The second time and the third time are both for ensuring that the discontinuous display information can be displayed at the correct time.
In order to ensure the synchronous operation of the two-screen display, when the second time and the third time appear, in the synchronous data packet, not only the time stamp is marked at the position of the starting time of the discontinuous display information, but also the synchronous time stamp is marked at the position of the corresponding time of the continuous display information. Therefore, the synchronous display effect of double-screen display can be ensured.
Further, after generating the corresponding synchronous data packets for each group of the first display information and the second display information meeting the packet time threshold range in sequence, the method further includes the following steps:
and step S104, storing each synchronous data packet in a corresponding acquired data packet file under a preset first directory, and naming the file name of each acquired data packet file in sequence.
And the synchronous data packet is stored in a file, so that the synchronous data packet is beneficial to simultaneous online calling of multiple users.
The embodiment of the disclosure generates the first display information and the second display information into a synchronous data packet at the same time, thereby ensuring the display effect of double-screen display. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, and the synchronous error is limited in the synchronous data packets, so that the accuracy of synchronous double-screen display information is improved. In the synchronization packet, not only the time stamp is marked at the start time of the non-consecutive display information, but also the synchronization time stamp is marked at the corresponding time position of the consecutive display information. Therefore, the synchronous display effect of the double-screen display can be ensured.
Corresponding to the first embodiment provided by the present disclosure, the present disclosure also provides a second embodiment, that is, a device for synchronizing information displayed on two screens, that is, a synchronization device at an acquisition end. Since the second embodiment is basically similar to the first embodiment, the description is simple, and the relevant portions should be referred to the corresponding description of the first embodiment. The device embodiments described below are merely illustrative.
Fig. 3 illustrates an embodiment of an apparatus for synchronizing dual-screen display information provided by the present disclosure.
Referring to fig. 3, the present disclosure provides an apparatus for synchronizing information displayed on two screens, including: receiving section 301, packet time threshold acquiring section 302, and time stamp marking section 303.
A receiving unit 301, configured to receive first display information and second display information, respectively;
a packet time threshold obtaining unit 302, configured to obtain each packet time threshold in sequence according to a preset packet interval value;
a timestamp marking unit 303, configured to generate, in sequence, corresponding synchronous data packets for each set of the first display information and the second display information that meet the packet time threshold range, and respectively mark, in each synchronous data packet, a timestamp on the first display information and the second display information that correspond to a marking time.
Optionally, the time stamping unit 303 further includes:
and the acquisition clock subunit is used for acquiring the marked time from the clock of the synchronization device.
Optionally, the marked time includes at least one of the following times:
the start time of the synchronization packet;
starting time of the discontinuous first display information in the synchronous data packet;
and starting time of the second display information is not continuous in the synchronous data packet.
Optionally, in the apparatus, the apparatus further includes:
and the storage unit is used for storing each synchronous data packet in a corresponding acquired data packet file under a preset first directory and naming the file name of each acquired data packet file in sequence.
The embodiment of the disclosure generates the first display information and the second display information into a synchronous data packet at the same time, thereby ensuring the display effect of double-screen display. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, and the synchronous error is limited in the synchronous data packets, so that the accuracy of synchronous double-screen display information is improved. In the synchronization packet, not only the time stamp is marked at the start time of the non-consecutive display information, but also the synchronization time stamp is marked at the corresponding time position of the consecutive display information. Therefore, the synchronous display effect of the double-screen display can be ensured.
For the third embodiment provided by the present disclosure, that is, another embodiment of the method for synchronizing information displayed on two screens, the embodiment of the present disclosure is applied to a playing device at a playing end. Since the third embodiment is related to the first embodiment, the description is relatively simple, and the relevant portions only need to refer to the corresponding description of the first embodiment. The device embodiments described below are merely illustrative.
The embodiments of the present disclosure are described in detail below with reference to fig. 4.
Step S401, sequentially acquiring synchronous data packets.
The method for sequentially acquiring the synchronous data packets comprises the following steps:
and step S401-1, respectively receiving returned display response messages based on the request playing messages.
When the playing device needs to watch the display content, it can send a request playing message to the calling server, and the calling server sequentially calls the synchronous data packet files from the preset first directory in the first embodiment, and generates a display response message according to the synchronous data packets stored in the synchronous data files. And in turn returned to the playback device.
Step S401-2, analyzing each display response message, and respectively acquiring the synchronous data packet.
Step S401-3, acquiring a character string of a start time stamp of each synchronous data packet.
Step S401-4, each synchronous data packet is stored in a corresponding playing data packet file under a preset second directory, and the file name of each playing data packet file is named as a corresponding character string.
And naming the file name of each playing data packet file as a character string of the corresponding start timestamp, so that repeated naming is avoided.
And step S401-5, sequentially acquiring synchronous data packets from the corresponding playing data packet files based on the file names of the playing data packet files.
The data packet files may be sequentially obtained by obtaining the synchronization data packets from the corresponding play data packet files.
Step S402, analyzing the synchronous data packets in sequence, and acquiring corresponding first display information and second display information.
Specifically, the method comprises the following steps:
step S402-1, obtaining the current start time stamp of the synchronous data packet and the previous start time stamp of the synchronous data packet played last.
Since the synchronization packets are obtained from the current synchronization packets stored in the preset second directory, however, the synchronization packets obtained from the calling server may not arrive at the playing device in the sequence due to the network. For example, the synchronization packets sequentially received by the playback device are: a fifth, seventh, sixth, and eighth synchronization packet; when the fifth synchronous data packet is played and the sixth synchronous data packet does not arrive, sequentially acquiring a seventh synchronous data packet from a preset second directory and then playing; when the seventh synchronization data packet is played, the sixth synchronization data packet is obtained, and after the seventh synchronization data packet is played, the sixth synchronization data packet is sequentially obtained from the preset second directory, so that playing confusion may be caused, and this situation is avoided. The disclosed embodiments provide a filtering mechanism.
Step S402-2, when the current starting time stamp is larger than the previous starting time stamp, acquiring the first display information and the second display information in the synchronous data packet.
And step S402-3, when the current starting timestamp is less than or equal to the previous starting timestamp, acquiring a next synchronization data packet.
Through the steps, the prior synchronous data packet arriving at the later stage is not played.
Step S403, in each synchronization data packet, according to a matching relationship between the timestamp of the first display information and the timestamp of the second display information and a time axis, controlling the first display information to be displayed on a first display screen, and controlling the second display information to be displayed on a second display screen.
Referring to fig. 5, the embodiment of the present disclosure uses the timestamp of each synchronization packet as a basis for synchronization. In the synchronization packet, not only the time stamp is marked at the start time of the non-consecutive display information, but also the synchronization time stamp is marked at the corresponding time position of the consecutive display information. Thereby ensuring the synchronous display effect of the double-screen display.
The embodiment of the disclosure simultaneously generates the first display information and the second display information into a synchronous data packet, thereby ensuring the synchronous display effect of double-screen display. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, synchronous errors are limited in the synchronous data packets, and the accuracy of synchronous double-screen display information is improved.
Corresponding to the third embodiment provided by the present disclosure, the present disclosure also provides a fourth embodiment, that is, another apparatus for synchronously displaying information on two screens. Since the fourth embodiment is substantially similar to the third embodiment, the description is simple, and the related portions should be referred to the corresponding description of the third embodiment. The device embodiments described below are merely illustrative.
Fig. 6 shows an embodiment of another apparatus for synchronous dual-screen display of information provided by the present disclosure.
Referring to fig. 6, the present disclosure provides an apparatus for synchronizing information displayed on two screens, including: a synchronous data packet acquiring unit 601, an analyzing unit 602 and a display unit 603.
An acquire synchronization packet unit 601 configured to sequentially acquire synchronization packets;
an analyzing unit 602, configured to sequentially analyze the synchronous data packets and obtain corresponding first display information and second display information;
a display unit 603, configured to control, in each synchronization data packet, the first display information to be displayed on a first display screen and control the second display information to be displayed on a second display screen according to a matching relationship between the timestamp of the first display information and the timestamp of the second display information, respectively, and a time axis.
Optionally, in the analysis unit 602, the method includes:
the acquisition and comparison time stamp subunit is used for acquiring the current starting time stamp of the synchronous data packet and the previous starting time stamp of the synchronous data packet played previously;
and the display information acquiring subunit is configured to acquire the first display information and the second display information in the synchronous data packet when the current start timestamp is greater than the previous start timestamp.
Optionally, in the analysis unit 602, further includes:
and the post-acquisition synchronization data packet subunit is used for acquiring a post-acquisition synchronization data packet when the current starting timestamp is less than or equal to the previous starting timestamp.
Optionally, the synchronization packet acquiring unit 601 includes:
a receiving display response message subunit, configured to receive returned display response messages based on the request playback messages, respectively;
the analysis display response message subunit is used for analyzing each display response message and respectively acquiring the synchronous data packet;
the character string acquiring subunit is used for acquiring a character string of a starting time stamp of each synchronous data packet;
the synchronous data packet saving subunit is used for saving each synchronous data packet in a playing data packet file corresponding to a preset second directory and respectively naming the file name of each playing data packet file as a corresponding character string;
and the synchronous data packet acquisition subunit is used for sequentially acquiring synchronous data packets from the corresponding playing data packet files based on the file names of the playing data packet files.
The embodiment of the disclosure generates the first display information and the second display information into a synchronous data packet at the same time, thereby ensuring the display effect of double-screen display. Meanwhile, the first display information and the second display information generate synchronous data packets according to the packet time threshold, and the synchronous error is limited in the synchronous data packets, so that the accuracy of synchronous double-screen display information is improved. In the synchronization packet, not only the time stamp is marked at the start time of the non-consecutive display information, but also the synchronization time stamp is marked at the corresponding time position of the consecutive display information. Therefore, the synchronous display effect of the double-screen display can be ensured.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other embodiments in which any combination of the features described above or their equivalents does not depart from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (7)
1. A method for synchronizing double-screen display information is applied to a synchronizing device of an acquisition end, and is characterized by comprising the following steps:
respectively receiving first display information and second display information, wherein the first display information and the second display information come from different display information sources and respectively comprise discontinuous display information;
sequentially acquiring a time threshold value of each packet according to a preset packet interval value;
sequentially generating a synchronous data packet from each group of the first display information and the second display information which meet the packet time threshold range, and respectively marking the first display information and the second display information corresponding to the marking time in each synchronous data packet with a timestamp;
wherein the marking of the time comprises:
the start time of the synchronization packet;
starting time of the discontinuous first display information in the synchronous data packet;
and starting time of the second display information is not continuous in the synchronous data packet.
2. The method of claim 1, wherein the marked moment is derived from a clock of the synchronization device.
3. The method according to claim 1, wherein after the sequentially generating each set of the first display information and the second display information that satisfy the packet time threshold range into a corresponding synchronization data packet, further comprising:
and storing each synchronous data packet in a corresponding acquisition data packet file under a preset first directory, and naming the file name of each acquisition data packet file in sequence.
4. An apparatus for synchronizing information displayed on two screens, comprising:
the display device comprises a receiving unit, a display unit and a display unit, wherein the receiving unit is used for respectively receiving first display information and second display information, and the first display information and the second display information are from different display information sources and respectively comprise discontinuous display information;
a packet time threshold value obtaining unit, configured to obtain each packet time threshold value in sequence according to a preset packet interval value;
a time stamp marking unit, configured to generate a synchronous data packet from each set of the first display information and the second display information that meet the packet time threshold range in sequence, and respectively mark a time stamp on the first display information and the second display information corresponding to a marking time in each synchronous data packet;
wherein, the marking the time comprises:
the start time of the synchronization packet;
starting time of the discontinuous first display information in the synchronous data packet;
and starting time of the second display information which is not continuous in the synchronous data packet.
5. A method for synchronizing double-screen display information is applied to a playing device of a playing end, and is characterized by comprising the following steps:
sequentially acquiring synchronous data packets, wherein the time stamps of the synchronous data packets are marked at the starting time of the synchronous data packets;
analyzing the synchronous data packets in sequence to obtain corresponding first display information and second display information, wherein the first display information and the second display information come from different display information sources and respectively comprise discontinuous display information;
controlling the first display information to be displayed on a first display screen and controlling the second display information to be displayed on a second display screen according to the matching relationship between the timestamp of the first display information and the timestamp of the second display information and a time axis in each synchronous data packet, wherein the timestamp of the first display information is marked at the starting moment of the first display information, and the timestamp of the second display information is marked at the starting moment of the second display information;
wherein, the analyzing the synchronous data packet in sequence to obtain corresponding first display information and second display information comprises:
acquiring a current starting timestamp of a current synchronous data packet and a previous starting timestamp of a previous playing synchronous data packet;
when the current starting timestamp is greater than the previous starting timestamp, acquiring first display information and second display information in the current synchronous data packet;
and when the current starting timestamp is less than or equal to the previous starting timestamp, acquiring first display information and second display information in a next playing synchronization data packet.
6. The method of claim 5, wherein the sequentially acquiring the synchronization packets comprises:
respectively receiving returned display response messages based on the request playing messages;
analyzing each display response message and respectively acquiring the synchronous data packet;
acquiring a character string of a start time stamp of each synchronous data packet;
storing each synchronous data packet in a corresponding playing data packet file under a preset second directory, and naming the file name of each playing data packet file as a corresponding character string;
and acquiring synchronous data packets from the corresponding playing data packet files in sequence based on the file names of the playing data packet files.
7. An apparatus for synchronizing information displayed on two screens, comprising:
the device comprises an acquisition synchronous data packet unit, a synchronization data packet unit and a synchronization data packet unit, wherein the acquisition synchronous data packet unit is used for sequentially acquiring synchronous data packets, and the time stamps of the synchronous data packets are marked at the starting time of the synchronous data packets;
the analysis unit is used for sequentially analyzing the synchronous data packets and acquiring corresponding first display information and second display information, wherein the first display information and the second display information are from different display information sources and respectively comprise discontinuous display information;
the display unit is used for controlling the first display information to be displayed on a first display screen and controlling the second display information to be displayed on a second display screen according to the matching relation between the timestamp of the first display information and the timestamp of the second display information and a time axis in each synchronous data packet, wherein the timestamp of the first display information is marked at the starting moment of the first display information, and the timestamp of the second display information is marked at the starting moment of the second display information;
wherein, in the analysis unit, includes:
the obtaining and comparing time stamp subunit is used for obtaining a current starting time stamp of the current synchronous data packet and a previous starting time stamp of a previous playing synchronous data packet;
the display information acquiring subunit is configured to acquire, when the current start timestamp is greater than the previous start timestamp, first display information and second display information in the current synchronization packet;
and the acquired synchronous data packet subunit is used for acquiring first display information and second display information in a next playing synchronous data packet when the current starting timestamp is less than or equal to the previous starting timestamp.
Priority Applications (1)
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| US6510279B1 (en) * | 1997-11-26 | 2003-01-21 | Nec Corporation | Audio/video synchronous reproducer enabling accurate synchronization between audio and video and a method of audio/video synchronous reproduction |
| CN1696923A (en) * | 2004-05-10 | 2005-11-16 | 北京大学 | Networked, multimedia synchronous composed storage and issuance system, and method for implementing the system |
| CN109922230A (en) * | 2017-12-12 | 2019-06-21 | 阿里巴巴集团控股有限公司 | Synchronous broadcast method, control method for playing back and the device of dynamic content |
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| US6510279B1 (en) * | 1997-11-26 | 2003-01-21 | Nec Corporation | Audio/video synchronous reproducer enabling accurate synchronization between audio and video and a method of audio/video synchronous reproduction |
| CN1696923A (en) * | 2004-05-10 | 2005-11-16 | 北京大学 | Networked, multimedia synchronous composed storage and issuance system, and method for implementing the system |
| CN109922230A (en) * | 2017-12-12 | 2019-06-21 | 阿里巴巴集团控股有限公司 | Synchronous broadcast method, control method for playing back and the device of dynamic content |
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