CN106657850A - Lesson content recording method and system - Google Patents
Lesson content recording method and system Download PDFInfo
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- CN106657850A CN106657850A CN201611109441.0A CN201611109441A CN106657850A CN 106657850 A CN106657850 A CN 106657850A CN 201611109441 A CN201611109441 A CN 201611109441A CN 106657850 A CN106657850 A CN 106657850A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
-
- 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
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
-
- 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
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
- G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Electrically Operated Instructional Devices (AREA)
Abstract
The invention relates to a lesson content recording method and system. The lesson content recording method is based on a teaching computer system, and comprises the following steps: detecting whether the teaching computer system generates a human-computer interaction action at a set period; when no human-computer interaction action is detected, intercepting screen contents of the teaching computer system to generate a screen shot image; adding the screen shot image satisfying a set condition in a screen shot queue, wherein the set condition is at least one of the following conditions: the screen shot image is the first image in the screen shot queue; the difference of the screen shot image and the screen shot image at the tail of the screen shot queue exceeds a set value; and when the recording is ended, storing the screen shot queue. The lesson content recording system is used for implementing the method. By adoption of the lesson content recording method and system, data redundancy can be effectively reduced.
Description
Technical field
The present invention relates to electronic system of imparting knowledge to students, more particularly to a kind of class offerings method for recording and system.
Background technology
With the popularization of electronic information system, increasing occasion all uses electronic information, is work and life
Work brings more facilities.In teaching field, teacher is attended class using computer and has begun to popularization.For example, teacher can prepare mostly
Electronic instruction courseware, by display screen the content made in advance is presented.These coursewares can be ppt coursewares, and courseware can also
It is distributed to student oneself to see.But from for reality, if courseware is not aided with the explanation of teacher, it is difficult to play due effect.
So while showing courseware, it is also synchronous to show the process that teacher teaches, extraordinary reproduction effect can be played.
Therefore, the explanation of courseware and teacher it is synchronous be reproduction classroom key.
In traditional method, teaching resource is all by the way of video record, by the teaching process and display screen of teacher
Courseware is recorded together, the purpose synchronous to realize courseware and teaching.It is appreciated that class offerings it is critical only that two sides
Face：One is the content that teacher's courseware shows；Two is the content of teacher's explanation.
Because courseware is static content, the long-time when showing records image, will necessarily cause information redundancy, records into
Video take substantial amounts of memory space.But if not recorded, the only original courseware of teacher cannot play reproduction class again
The effect of hall.
The content of the invention
Based on this, it is necessary to provide a kind of class offerings method for recording that can reduce memory space.
Additionally, also providing a kind of class offerings recording system that can reduce memory space.
A kind of class offerings method for recording, based on training computer system, including：
Detect whether the training computer system produces interactive action with setting cycle；
When interactive action is not detected by, intercepts the training computer system screen content and generate snapshot picture；
The snapshot picture addition screenshotss queue for imposing a condition will be met；It is described to impose a condition as one of following condition：It is described
Snapshot picture is the piece image in screenshotss queue；The difference of the snapshot picture of tail of the queue in the snapshot picture and screenshotss queue
More than setting value；
At the end of recording, the screenshotss queue is preserved.
Wherein in one embodiment, also including synchronous recording audio frequency the step of.
Wherein in one embodiment, the setting cycle is 1～2 second.
Wherein in one embodiment, the interactive action be mouse action, keyboard action, touch input action with
And one or more in lettering pen action of writing.
Wherein in one embodiment, when the difference of the snapshot picture of tail of the queue in the snapshot picture with screenshotss queue exceedes
During setting value, the difference section is encoded.
A kind of class offerings recording system, based on training computer system, including：
Man-machine interaction detection module, for detecting whether the training computer system produces man-machine interaction with setting cycle
Action；
Screen capture module, for when interactive action is not detected by, intercepting the training computer system screen content
Generate snapshot picture；And the snapshot picture that imposes a condition will be met add screenshotss queue；It is described impose a condition for following condition it
One：The snapshot picture is the piece image in screenshotss queue；The snapshot of tail of the queue in the snapshot picture and screenshotss queue
The difference of picture exceedes setting value；
Preserving module, at the end of recording, preserving the screenshotss queue.
Wherein in one embodiment, also including audio recording module, for synchronous recording audio frequency.
Wherein in one embodiment, the setting cycle is 1～2 second.
Wherein in one embodiment, the interactive action be mouse action, keyboard action, touch input action with
And one or more in lettering pen action of writing.
Wherein in one embodiment, also including difference coding module, for when in the snapshot picture with screenshotss queue
When the difference of the snapshot picture of tail of the queue exceedes setting value, the difference section is encoded.
Above-mentioned class offerings method for recording and system, by the periodically intercepting in the case of without interactive action
Screen content, and preservation changes greatly snapshot picture, not only can farthest be truncated to the screen for including key content
Content, can also effectively reduce data redundancy, and final data takes less memory space.
Description of the drawings
Fig. 1 is the class offerings method for recording flow chart of an embodiment；
Fig. 2 is the class offerings recording system module map of an embodiment.
Specific embodiment
It is further described below in conjunction with drawings and Examples.
In teaching field, when teacher is given lessons using computer, the form being usually taken is as follows：Teacher is put into electronic courseware
Training computer system, is then opened courseware using software, is shown on the computer screen.By projection, will can also count
Calculation machine screen content is illustrated on bigger screen and shows.Courseware is typically the text comprising static content such as various documents, picture
Part.
Following examples are for the process based on training computer system demonstration static content, there is provided a kind of class offerings
Method for recording.
Fig. 1 is the class offerings method for recording flow chart of an embodiment.The method is calculated based on the teaching that teacher is used
Machine system, comprises the following steps S101～S105.
Step S101：Detect whether the training computer system produces interactive action with setting cycle.If so, etc.
Treat next cycle and continue executing with step S101.Otherwise execution step S102.
Teacher is when teaching of use computer system is given lessons, it is possible to operate computer system from time to time.For example switch
Courseware, annotate on courseware, open new courseware, close courseware, move window, amplifying gesture etc..The method of the present embodiment
It is based on the recognition：The content (course of action of operation) that teacher is represented in operation is not key content, only works as behaviour
The content represented after the completion of work is only key content.For example annotate when input through keyboard, wait it is to be entered after the completion of, it is possible to obtain
Complete annotation content.When for example switching courseware again, to perform the corresponding file of opening, open the operation such as courseware, only etc.
After the completion of operation, the courseware after switching just can be shown.
This step detects whether to produce interactive action with setting cycle, that is, judge whether teacher is performing when giving lessons
Some actions, produce the picture unrelated with key content.The setting cycle can be 1～2 second, or other satisfactory weeks
Phase.
According to the actual conditions of training computer system, above-mentioned interactive action can be mouse action, keyboard action,
One or more in touch input action and lettering pen action of writing.
Step S102：Intercept the training computer system screen content and generate snapshot picture.When a cycle arrive and
When being not detected by above-mentioned interactive action, it is believed that current presentation content is key content, and screen content is intercepted
Get off to generate snapshot picture.
Step S103：The snapshot picture addition screenshotss queue for imposing a condition will be met.It is described to impose a condition as following condition
One of：The snapshot picture is the piece image in screenshotss queue；The screenshotss of tail of the queue in the snapshot picture and screenshotss queue
The difference of image exceedes setting value.
A series of snapshot pictures for sorting sequentially in time are preserved in screenshotss queue.When recording process starts, screenshotss
Queue is sky, and the piece image of intercepting can be directly added into screenshotss queue.When intercept be not the first width figure when, in addition it is also necessary to will
Current snapshot picture is compared with the snapshot picture of tail of the queue in screenshotss queue, calculates the difference between two width snapshot pictures.Only
Have when the difference between two width snapshot pictures exceedes setting value, just current snapshot picture is added into screenshotss queue.Work as difference value
During less than setting value, two width snapshots are illustrated as similarity degree is higher, namely change is little, therefore there is no need similarity degree
Higher snapshot picture is all preserved, and reduces redundancy.
Step S104：Judge to record and whether terminate, if so, then execution step S105, otherwise return execution step S101.Record
Process processed not at the end of, above-mentioned steps S101～S103 is performed repeatedly, it is possible to obtain save and a series of arrange sequentially in time
The snapshot picture that sequence and satisfaction impose a condition.
Step S105：At the end of recording, the screenshotss queue is preserved.In screenshotss, every width snapshot picture all bands are sometimes
Between stab information, coordinate timestamp information, can be used for later stage broadcasting.When playing, by special player, according to sequence of pictures
The time shaft of upper each picture occurs on a player as playing lantern slides, temporally.
Further, the step of said method can also include synchronous recording audio frequency.Audio frequency is usually that teacher coordinates courseware
Explanation content, it is synchronous with the holding of courseware video.It is appreciated that audio frequency can also be post-production.Coordinate sound, it appears that
Seem a video file, but be not video.So volume can very little.
In above-mentioned steps S103, when the difference of the snapshot picture of tail of the queue in the snapshot picture and screenshotss queue exceedes setting
During value, the difference section can also be encoded.In addition to directly preserving snapshot picture, it is also an option that by difference portion
Dividing carries out coding preservation, and difference section can be used for recovering snapshot picture.Difference section is only preserved, redundancy can be further reduced
Data.Traditional video record mode is compared, data volume can be greatly reduced.
Above-mentioned class offerings method for recording, by periodically in the case where not having interactive action in screen printing
Hold, and preservation changes greatly snapshot picture, not only can farthest be truncated to the screen content for including key content, also
Data redundancy can be effectively reduced, final data takes less memory space.
Based on identical inventive concept, the class offerings recording system of an embodiment is also provided.The class offerings record system
System is based on training computer system, including man-machine interaction detection module 100, screen capture module 200 and preserving module 300.
Man-machine interaction detection module 100 is used to detect whether the training computer system produces man-machine friendship with setting cycle
Mutually action.Teacher is when teaching of use computer system is given lessons, it is possible to operate computer system from time to time.Such as switching class
Part, annotate on courseware, open new courseware, close courseware, move window, amplifying gesture etc..The method base of the present embodiment
In such understanding：The content (course of action of operation) that teacher is represented in operation is not key content, only works as operation
After the completion of the content that represents be only key content.For example annotate when input through keyboard, wait it is to be entered after the completion of, it is possible to obtained
Whole annotation content.When for example switching courseware again, to perform the corresponding file of opening, open the operation such as courseware, only wait behaviour
After the completion of work, the courseware after switching just can be shown.
Man-machine interaction detection module 100 detects whether to produce interactive action with setting cycle, that is, judge that teacher is awarding
Whether class hour is performing some actions, produces the picture unrelated with key content.The setting cycle can be 1～2 second, or other
The satisfactory cycle.
According to the actual conditions of training computer system, above-mentioned interactive action can be mouse action, keyboard action,
One or more in touch input action and lettering pen action of writing.
Screen capture module 200 is used for when interactive action is not detected by, and intercepts in the training computer system screen
Hold and generate snapshot picture；And the snapshot picture that imposes a condition will be met add screenshotss queue；It is described to impose a condition as following condition
One of：The snapshot picture is the piece image in screenshotss queue；The screenshotss of tail of the queue in the snapshot picture and screenshotss queue
The difference of image exceedes setting value.
When a cycle arrives and when being not detected by above-mentioned interactive action, it is believed that current presentation content is
Key content, screen content is intercepted and generates snapshot picture.
A series of snapshot pictures for sorting sequentially in time are preserved in screenshotss queue.When recording process starts, screenshotss
Queue is sky, and the piece image of intercepting can be directly added into screenshotss queue.When intercept be not the first width figure when, in addition it is also necessary to will
Current snapshot picture is compared with the snapshot picture of tail of the queue in screenshotss queue, calculates the difference between two width snapshot pictures.Only
Have when the difference between two width snapshot pictures exceedes setting value, just current snapshot picture is added into screenshotss queue.Work as difference value
During less than setting value, two width snapshots are illustrated as similarity degree is higher, namely change is little, therefore there is no need similarity degree
Higher snapshot picture is all preserved, and reduces redundancy.
Preserving module 300 is used at the end of recording, and using the snapshot picture in the screenshotss queue as frame of video, and matches somebody with somebody
Close timestamp information and generate class offerings video file.Recording process not at the end of, screen capture module 200 can be protected ceaselessly
Deposit and a series of sorted sequentially in time and meet the snapshot picture that imposes a condition.In screenshotss, every width snapshot picture all bands
There is timestamp information, coordinate timestamp information, preserving module 300 to be preserved screenshotss queue, for later stage broadcasting.When
During broadcasting, by special player, according to the time shaft of each picture in sequence of pictures as playing lantern slides, temporally go out
Now on a player.
Further, above-mentioned class offerings recording system can also include audio recording module, for synchronous recording audio frequency.
Audio frequency is usually the explanation content that teacher coordinates courseware, synchronous with the holding of courseware video.It is appreciated that audio frequency can also be the later stage
Make.Coordinate sound, it appears that seem a video file, but be not video.So volume can very little.
Further, above-mentioned class offerings recording system can also include difference coding module, for when the snapshot
During as exceeding setting value with the difference of the snapshot picture of tail of the queue in screenshotss queue, the difference section is encoded.Except straight
Connect outside preservation snapshot picture, it is also an option that difference section is carried out into coding preservation, difference section can be used for recovering screenshotss
Image.Difference section is only preserved, redundant data can be further reduced.Traditional video record mode is compared, can be subtracted significantly
Few data volume.
Above-mentioned class offerings recording system, by periodically in the case where not having interactive action in screen printing
Hold, and preservation changes greatly snapshot picture, not only can farthest be truncated to the screen content for including key content, also
Data redundancy can be effectively reduced, final data takes less memory space.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of class offerings method for recording, based on training computer system, including：
Detect whether the training computer system produces interactive action with setting cycle；
When interactive action is not detected by, intercepts the training computer system screen content and generate snapshot picture；
The snapshot picture addition screenshotss queue for imposing a condition will be met；It is described to impose a condition as one of following condition：The screenshotss
Image is the piece image in screenshotss queue；The snapshot picture exceedes with the difference of the snapshot picture of tail of the queue in screenshotss queue
Setting value；
At the end of recording, the screenshotss queue is preserved.
2. class offerings method for recording according to claim 1, it is characterised in that also including the step of synchronous recording audio frequency
Suddenly.
3. class offerings method for recording according to claim 1, it is characterised in that the setting cycle is 1～2 second.
4. class offerings method for recording according to claim 1, it is characterised in that the interactive action is dynamic for mouse
One or more in work, keyboard action, touch input action and lettering pen action of writing.
5. class offerings method for recording according to claim 1, it is characterised in that when the snapshot picture and screenshotss queue
When the difference of the snapshot picture of middle tail of the queue exceedes setting value, the difference section is encoded.
6. a kind of class offerings recording system, based on training computer system, including：
Man-machine interaction detection module, for detecting whether the training computer system produces man-machine interaction and move with setting cycle
Make；
Screen capture module, generates for when interactive action is not detected by, intercepting the training computer system screen content
Snapshot picture；And the snapshot picture that imposes a condition will be met add screenshotss queue；It is described to impose a condition as one of following condition：Institute
Snapshot picture is stated for the piece image in screenshotss queue；The difference of the snapshot picture of tail of the queue in the snapshot picture and screenshotss queue
It is different more than setting value；
Preserving module, at the end of recording, preserving the screenshotss queue.
7. class offerings recording system according to claim 6, it is characterised in that also including audio recording module, be used for
Synchronous recording audio frequency.
8. class offerings recording system according to claim 6, it is characterised in that the setting cycle is 1～2 second.
9. class offerings recording system according to claim 6, it is characterised in that the interactive action is dynamic for mouse
One or more in work, keyboard action, touch input action and lettering pen action of writing.
10. class offerings recording system according to claim 6, it is characterised in that also including difference coding module, be used for
When the difference of the snapshot picture of tail of the queue in the snapshot picture and screenshotss queue exceedes setting value, the difference section is carried out
Coding.
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| CN201611109441.0A CN106657850A (en) | 2016-12-02 | 2016-12-02 | Lesson content recording method and system |
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| CN201611109441.0A CN106657850A (en) | 2016-12-02 | 2016-12-02 | Lesson content recording method and system |
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| CN107948571A (en) * | 2017-12-27 | 2018-04-20 | 努比亚技术有限公司 | The method, apparatus and computer-readable recording medium of video record |
| CN108831226A (en) * | 2018-06-29 | 2018-11-16 | 合肥霞康电子商务有限公司 | A kind of blackboard information playback system of education |
| CN110010164A (en) * | 2018-11-13 | 2019-07-12 | 成都依能科技股份有限公司 | Multi-channel sound video automated intelligent edit methods |
| CN110363245A (en) * | 2019-07-17 | 2019-10-22 | 上海掌学教育科技有限公司 | Excellent picture screening technique, the apparatus and system of Online class |
| CN114257770A (en) * | 2021-11-16 | 2022-03-29 | 杭州迈杰教育科技有限公司 | Method for recording computer picture for classroom teaching, electronic equipment and storage medium |
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Application publication date: 20170510 |