CN109922292A - Screen recording system and screen recording method thereof - Google Patents
Screen recording system and screen recording method thereof Download PDFInfo
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Abstract
A screen recording system and a screen recording method thereof are disclosed, wherein the screen recording system comprises: the device comprises a main chip, a screen recording control module and a signal conversion module; the main chip is connected with the screen recording control module and the signal conversion module, and the signal conversion module is also connected with the screen recording control module; the signal conversion module is used for performing signal conversion and output on a first screen image signal output by the main chip according to the task condition; when the task is screen recording, the signal conversion module converts a first screen image signal output by the main chip into a camera signal and outputs the camera signal to the screen recording control module; and the screen recording control module is used for entering a camera recording mode after receiving a screen recording notification sent by the main chip and recording the camera signal converted and output by the signal conversion module. The screen recording system and the screen recording method thereof provided by the embodiment of the invention convert the video image signal into the camera signal, so that the screen recording control module can record the screen content in a camera recording mode without additionally arranging a camera.
Description
Technical field
The invention belongs to technical field of video image processing, and in particular to a kind of record screen system and its record screen method.
Background technique
As performance of the Intelligent mobile equipment in terms of processing, display and system compatible is continuously improved and optimizes, user couple
The functional requirement of Intelligent mobile equipment is increasing, promotes Intelligent mobile equipment that can provide service for more and more applications,
It is realized so that being only capable of also gradually being transferred to through Intelligent mobile equipment in the function that the end PC is run in the past, such as screen recording.
The existing screen recording completed by Intelligent mobile equipment is needed by the camera of Intelligent mobile equipment to need
The picture to be recorded is shot, and the picture of camera shooting is as the image recorded.The mode recorded by camera,
The image effect of recording depends greatly on the performance of the camera of Intelligent mobile equipment, when the performance of camera is not high
When, the effect of recording is undesirable, is unable to reach requirement of the user to image is recorded.
Summary of the invention
It is above-mentioned by camera progress screen recording in order to solve, lead to the technical problem that recording result is undesirable, this hair
Bright embodiment proposes a kind of record screen system and its record screen method.
A kind of record screen system, comprising: master chip, record screen control module and signal conversion module；Wherein, master chip and record are shielded
Control module is connected with signal conversion module, and signal conversion module is also connect with record screen control module；
Signal conversion module is used to carry out corresponding signal according to task to the first screen image signal of master chip output and turn
It changes and exports；Wherein, when the task is record screen, the first screen image signal that the signal conversion module exports master chip
Camera signals are converted to, and exports and gives record screen control module；
Record screen control module is used to enter camera recording mode after the record screen notice for receiving master chip transmission, to letter
Number conversion module is converted and the camera signals exported are recorded.
Further, the signal conversion module includes the first conversion module and the second conversion module, signal conversion module
The first conversion module connection master chip and the second conversion module, the second conversion module also connect with record screen control module；
The first screen image signal that first conversion module exports master chip is converted into video signal, and second turn
It changes the mold block and the video signal that the first conversion module is converted to is converted into camera signals.
Further, the record screen system further includes driving screen control module, and the signal conversion module further includes that third turns
Change the mold block, the third conversion module connection master chip and drive screen control module of signal conversion module；The third conversion module will
The first screen image signal of master chip output is converted into the second screen image signal, and exports and give the drive screen control module, drives
When screen control module receives the second screen image signal, driving display screen is shown.
Further, the record screen control module enters back after the play-back command for receiving the video image that playback is recorded
Mode playback will need the video image played back to be sent to master chip and carry out image procossing, the video figure that master chip plays back needs
As exporting the first screen image after carrying out image procossing；When the task is playback, the signal conversion module is defeated by master chip
The first screen image signal out is converted to the second screen image signal and exports to screen control module is driven, and drives screen control mould
Block driving display screen is shown.
Further, when the task is record screen, the signal conversion module is also by the first screen figure of master chip output
It as signal is converted to the second screen image signal, and exports to screen control module is driven, drives screen control module driving display screen and shown
Show.
Further, master chip includes the first communication interface and the first video image interface, and record screen control module includes the
Two communication interfaces and the second video image interface；First communication interface of master chip and the second communication interface of record screen control module
Connection；First video image interface of master chip is connect with the second video image interface of record screen control module.
Further, the camera signals are MIPICSI-2 signal.
A kind of record screen methods of such as preceding described in any item record screen systems, the record screen method includes recording step, is recorded
Step includes:
Step S21: master chip Xiang Luping control module sends record screen notice, and the external video image signal that will be received
Or interior video image signal process is sent to signal conversion module at the first screen image signal；
Step S22: the first screen image signal received is converted into camera signals by signal conversion module, is sent to record
Shield control module；
Step S23: record screen control module receives the record screen notice of master chip transmission, into camera recording mode, when
When receiving the camera signals of signal conversion module transmission, start to record.
Further, the record screen method further includes replay procedure, the replay procedure the following steps are included:
Step S31: record screen control module detects whether to receive the play-back command for the video image that playback is recorded；
Step S32: record screen control module enters playback mode after receiving the play-back command, stops record screen operation, simultaneously
It will stop recording screen notice and the video image played back needed to be sent to master chip；
Step S33: after master chip receives stopping record screen notice, stop record screen function, and need to play back to what is received
Video image carry out image procossing, obtain the first screen image signal, and the first screen image signal is sent to signal modulus of conversion
Block；
Step S34: the first screen image signal received is converted into the second screen image signal by signal conversion module, concurrently
Give drive screen control chip；
Step S35: after driving the second screen image signal that screen control chip receives signal conversion module transmission, liquid crystal is driven
The second screen image signal that screen display receives.
Further, the recording step further include: when needing to stop record screen, master chip Xiang Luping control module is sent
Stop record screen notice, while exiting camera recording mode.
The embodiment of the present invention the utility model has the advantages that the record screen system and its record screen method that the embodiment of the present invention proposes by video figure
As signal is converted into camera signals, so that the mode of camera recording mode can be used to record screen in record screen control module
Content, without camera is additionally arranged.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the record screen system that the embodiment of the present invention 1 proposes；
Fig. 2 is the flow chart for the recording step that the record screen method that the embodiment of the present invention 1 proposes includes；
Fig. 3 is the flow chart for the replay procedure that the record screen method that the embodiment of the present invention 1 proposes includes；
Fig. 4 is the structural schematic diagram for the record screen system that the embodiment of the present invention 2 proposes；
Fig. 5 is the flow chart for the recording step that the record screen method that the embodiment of the present invention 2 proposes includes；
Fig. 6 is the flow chart for the replay procedure that the record screen method that the embodiment of the present invention 2 proposes includes.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.But as known to those skilled in the art, the invention is not limited to attached drawings and following reality
Apply example.
Embodiment 1:
The record screen system that the embodiment of the present invention proposes, as shown in Figure 1, comprising: master chip, record screen control module, signal turn
It changes the mold block and drives screen control module.Wherein master chip is connect with record screen control module and signal conversion module, signal conversion module
Also it is connect with record screen control module and drive screen control module.
Wherein, core component of the master chip as whole system controls the running of whole system, such as controls to record screen
Molding block sends record screen notice or Xiang Luping control module sends and stops record screen notice；The master chip can also carry out at image
Reason, such as by external video image signal or interior video image signal process at the first screen image signal, or will be from record
Shield the video image processing of the recording of control module into the first screen image signal.The master chip includes the first operating system.The
One operating system can be Android system.The external video image signal can be by HDMI, VGA, DP, AV, YPBPR,
The interfaces such as USB input to the video signal of master chip, and the interior video picture signal can be the first behaviour of master chip
Make the user interface UI signal of system.
Signal conversion module is used to carry out signal to the first screen image signal that master chip exports according to different tasks to turn
It changes, the task includes recording and playback.When being recorded, the first screen image signal is converted into imaging by signal conversion module
Head signal；When being played back, the first screen image signal is converted into the second screen image signal by signal conversion module.Wherein recording
When processed, for the video image content recorded simultaneously in liquid crystal screen display, signal conversion module can also be by the first screen image
Signal is converted into the second screen image signal, in liquid crystal screen display.
First screen image signal is converted into the effect of camera signals by signal conversion module, is so that record screen control module
When receiving camera signals, it is identified as the signal from camera, so as to use camera recording mode
Mode is recorded.Camera signals can be MIPICSI-2 (Mobile Industry Processor Interface
Camera Serial Interface-2, mobile industry processor interface camera serial line interface -2) signal.
First screen image signal is converted into the effect of the second screen image signal by signal conversion module, is that can be driven
Shield control module identification, to be shown.The format of second screen image signal can be with the format phase of the first screen image signal
Together, it can also be different, this depends on the type of conversion chip used by inside signal conversion module and drives screen control module
Type.
Wherein, signal conversion module can be the module independently of master chip, be also possible to be integrated in the mould in master chip
Block.
Record screen control module is used to enter camera recording mode after the record screen notice for receiving master chip transmission, to letter
The camera signals of number conversion module output are recorded, and the video image of recording is stored in record screen control module and includes
It stores in equipment；The play-back command of the video image for the recording stored in the storage equipment for receiving playback record screen control module
Enter playback mode afterwards, is sent to master chip and stop record screen notice, and the video image that the recording in storage equipment will be stored in
It is sent to master chip and carries out image procossing.The video image of record screen control module output can be HDMI (High Definition
Multimedia Interface, high-definition multimedia interface) format video image.Record screen control module includes the second behaviour
Make system.Second operating system can be Android system.
The second screen image signal driving liquid crystal display that screen control module is used to export according to signal conversion module is driven to be shown
Show.
The record screen system further includes record screen indicator light, is used to indicate whether record screen control module is in record screen state, just
The working condition of record screen control module is intuitively understood in user.When master chip Xiang Luping control module sends record screen notice
When, record screen indicator light is opened, shows that record screen control module is in record screen state；It is sent when master chip receives record screen control module
Stopping record screen notice when or master chip Xiang Luping control module send stop record screen notice when, close record screen indicator light, table
Bright record screen control module is not in record screen state.
The master chip includes record screen control key, starts record screen by clicking record screen control key or stops recording screen.The record
Shielding control key can be physical button, the virtual key being also possible in user interface.Receiving pressing record screen control key
After indication signal, master chip Xiang Luping control module sends record screen notice or stops record screen notice.
The record screen method that the embodiment of the present invention proposes, including record step and replay procedure.Replay procedure can recorded
Insertion during step carries out suspends or stops so that recording step, can not also carry out recording step when progress.
Wherein, the recording step is as shown in Figure 2, comprising the following steps:
Step S21: master chip Xiang Luping control module sends record screen notice, and the external video image signal that will be received
Or interior video image signal process is sent to signal conversion module at the first screen image signal；
Step S22: the first screen image signal received is converted into camera signals by signal conversion module, is sent to record
Shield control module；
Step S23: record screen control module receives the record screen notice of master chip transmission, into camera recording mode, opens
Dynamic camera recording function starts to record when receiving the camera signals of signal conversion module transmission.The video figure of recording
As being stored in the storage equipment that record screen control module includes.
The step of recording can also include: that the first screen image signal for will receiving of signal conversion module is converted into second
Screen image signal is sent to drive screen control module；Drive the second screen image that screen control module receives signal conversion module transmission
After signal, driving liquid crystal display shows the second screen image signal received.This step can carry out simultaneously with step S22.
The recording step further include: when needing to stop record screen, master chip Xiang Luping control module, which is sent, stops record screen
Notice, while exiting camera recording mode.
In the step s 21, while master chip Xiang Luping control module sends record screen notice, record screen indicator light is opened.
While master chip Xiang Luping control module sends and stops recording screen notice, closes record and shield indicator light.
The replay procedure is as shown in Figure 3, comprising the following steps:
Step S31: record screen control module, which detects whether to receive, to be stored in the storage equipment of playback record screen control module
The play-back command of the video image of recording；The play-back command can be to be stored in the storage equipment for clicking record screen control module
The video image of recording；
Step S32: record screen control module enters playback mode after receiving the play-back command, stops record screen operation, simultaneously
It will stop recording screen notice and the video image played back needed to be sent to master chip；
Step S33: after master chip receives stopping record screen notice, stop record screen function, such as master chip is no longer to outside
Video signal and interior video picture signal carry out image procossing, to avoid winding recording；And the needs received are returned
The video image put carries out image procossing, obtains the first screen image signal, the first screen image signal is sent to signal modulus of conversion
Block；
Step S34: the first screen image signal received is converted into the second screen image signal by signal conversion module, concurrently
Give drive screen control chip；
Step S35: after driving the second screen image signal that screen control chip receives signal conversion module transmission, liquid crystal is driven
The second screen image signal that screen display receives.
Wherein, in step S33, after master chip receives stopping record screen notice, record screen indicator light is closed.
Video signal is converted into camera signals by the record screen system and record screen method that the embodiment of the present invention proposes, is made
Screen control module, which must be recorded, can be used the mode of camera recording mode to record screen content, without camera shooting is additionally arranged
Head.
The record screen system and record screen method that the embodiment of the present invention proposes can be used for the Intelligent mobile equipments such as plate, mobile phone.
Embodiment 2:
The embodiment of the present invention also proposes a kind of record screen system, as shown in Figure 4, comprising: master chip, record screen control module, letter
Number conversion module and drive screen control module.
Wherein, core component of the master chip as whole system controls the running of whole system, such as controls to record screen
Molding block sends record screen notice or stops record screen notice；The master chip can also carry out image procossing, such as by external video
Picture signal or interior video image signal process, or will be from the recordings of record screen control module at the first screen image signal
Video image processing is at the first screen image signal.The master chip includes the first operating system.First operating system can be peace
Tall and erect system.The external video image signal, which can be, inputs to main core by interfaces such as HDMI, VGA, DP, AV, YPBPR, USB
The video signal of piece, the interior video picture signal can be the user interface UI letter of the first operating system of master chip
Number.
Master chip includes the first communication interface and the first video image interface, and record screen control module includes the second communication interface
With the second video image interface.First communication interface of master chip is connect with the second communication interface of record screen control module, is passed through
First communication interface and the second communication interface interactively communicate, and can transmit notice between master chip and record screen control module,
Such as master chip Xiang Luping control module transmission record screen notice, record screen control module is transmitted to master chip stops record screen notice.It is main
First video image interface of chip is connect with the second video image interface of record screen control module, and record shields control module to main core
The video image that piece transmission is recorded.
First communication interface and the second communication interface can connect for USB interface, UART interface, I2C interface or SPI
Mouthful.
The first video image interface and the second video image interface can be HDMI interface.
The first screen image signal that signal conversion module is used to export master chip carries out signal conversion.Signal conversion module
Including third conversion module, the first conversion module and the second conversion module, the third conversion module of signal conversion module connects master
Chip and drive screen control module, the first conversion module connection master chip of signal conversion module and the second conversion module, second turn
Mold changing block is also connect with record screen control module.
When needing to show video image (video image when video image when including recording shows and plays back is shown),
The first screen image signal that the third conversion module exports master chip is converted into the second screen image signal, is sent to drive screen control
Coremaking piece.When needing recorded video image, the first screen image signal that the first conversion module exports master chip is converted into regarding
Frequency picture signal is sent to the second conversion module；The video image that first conversion module is converted to by the second conversion module is believed
Number camera signals are converted into, are sent to record screen control module.
First screen image signal is converted into the effect of the second screen image signal by third conversion module, is that can be driven
Shield control module identification, to be shown.The format of second screen image signal can be with the format phase of the first screen image signal
Together, it can also be different, this depends on the type of third conversion module and drives the type of screen control module.
Video signal is converted into the effect of camera signals by the second conversion module, is so that record screen control module exists
When receiving camera signals, it is identified as the signal from camera, so as to be recorded.Camera signals can be with
For MIPI CSI-2 signal, record screen control module further includes MIPI-CSI2 interface.When the video signal is HDMI signal
When, second conversion module is that HDMI turns MIPICSI-2 chip.
Record screen control module is used to after the record screen notice for receiving master chip transmission by the second communication interface enter to take the photograph
As head recording mode, the camera signals of the second conversion module output are recorded, and the video image of recording is stored in
In the storage equipment that record screen control module includes；The recording stored in the storage equipment for receiving playback record screen control module
Enter playback mode after the play-back command of video image, is stopped by the second communication interface to the transmission of the first communication interface of master chip
Only record screen notice, and the video image for the recording being stored in storage equipment is sent to main core by the second video image interface
First video image interface of piece carries out image procossing by video image of the master chip to the recording.The video image of the recording
It can be the video image of HDMI format, or the video image of extended formatting, this depends on the first video image interface
With the type of the second video image interface.Record screen control module includes the second operating system.Second operating system can be Android
System.
The second screen image signal driving liquid crystal display that screen control module is used to export according to third conversion module is driven to be shown
Show.
The record screen system further includes record screen indicator light, is used to indicate whether record screen control module is in record screen state, just
The working condition of record screen control module is intuitively understood in user.When master chip Xiang Luping control module sends record screen notice
When, record screen indicator light is opened, shows that record screen control module is in record screen state；It is sent when master chip receives record screen control module
Stopping record screen notice when or master chip Xiang Luping control module send stop record screen notice when, close record screen indicator light, table
Bright record screen control module is not in record screen state.
The master chip includes record screen control key, starts record screen by clicking record screen control key or stops recording screen.The record
Shielding control key can be physical button, the virtual key being also possible in user interface.Receiving pressing record screen control key
After indication signal, the second communication interface of the first communication interface Xiang Luping control module of master chip sends record screen notice or stops
Record screen notice.
The record screen method that the embodiment of the present invention proposes, including record step and replay procedure.Replay procedure can recorded
Insertion during step carries out suspends or stops so that recording step, can not also carry out recording step when progress.
Wherein, the recording step is as shown in Figure 5, comprising the following steps:
Step S51: master chip sends record screen by the second communication interface of the first communication interface Xiang Luping control module and leads to
Know, and the external video image signal received or interior video image signal process are sent at the first screen image signal
Second conversion module of signal conversion module；
The the first screen image signal received is converted into video signal by the S52: the first conversion module of step, is sent to
Second conversion module of signal conversion module；The video signal received is converted into camera letter by the second conversion module
Number, it is sent to record screen control module；
Step S53: record screen control module receives the record screen notice of master chip transmission, into camera recording mode, opens
Dynamic camera recording function starts to record when receiving the camera signals of the second conversion module transmission.The video figure of recording
As being stored in the storage equipment that record screen control module includes.
In the step S51, the first screen image signal is also sent to the third conversion module of signal conversion module.Institute
It states and records step can also to include: third conversion module be converted into the second screen image letter for the first screen image signal received
Number, it is sent to drive screen control module；After driving the second screen image signal that screen control module receives signal conversion module transmission, drive
Hydrodynamic crystalline substance screen shows the second screen image signal received.This step can carry out simultaneously with step S52.
The recording step further include: when needing to stop record screen, the first communication interface of master chip shields control mould to record
Second communication interface of block, which is sent, stops record screen notice, after record screen control module receives stopping record screen notice, exits camera shooting
Head recording mode.
In step s 51, while master chip Xiang Luping control module sends record screen notice, record screen indicator light is opened.
While master chip Xiang Luping control module sends and stops recording screen notice, closes record and shield indicator light.
The replay procedure is as shown in Figure 6, comprising the following steps:
Step S61: record screen control module, which detects whether to receive, to be stored in the storage equipment of playback record screen control module
The play-back command of the video image of recording；The play-back command can be to be stored in the storage equipment for clicking record screen control module
The video image of recording；
Step S62: record screen control module enters playback mode after receiving the play-back command, stops record screen operation, simultaneously
It will stop recording and shield the first communication interface that notice is sent to master chip by the second communication interface, the video image that needs are played back
The first video image interface of master chip is sent to by the second video image interface；
Step S63: after master chip receives stopping record screen notice, stop record screen function, such as master chip is no longer to outside
Video signal and interior video picture signal carry out image procossing, to avoid winding recording；And the needs received are returned
The video image put carries out image procossing, obtains the first screen image signal, and the first screen image signal is sent to third conversion
Module；
Step S64: the first screen image signal received is converted into the second screen image signal by third conversion module, concurrently
Give drive screen control chip；
Step S65: after driving the second screen image signal that screen control chip receives the transmission of third conversion module, liquid crystal is driven
The second screen image signal that screen display receives.
Wherein, in step S63, after master chip receives stopping record screen notice, record screen indicator light is closed.
The record screen system and record screen method that the embodiment of the present invention proposes convert video signal (such as HDMI signal)
At camera signals (such as MIPI-CSI2 signal), so that the mode of camera recording mode can be used in record screen control module
Screen content is recorded, without camera is additionally arranged.
The record screen system and record screen method that the embodiment of the present invention proposes can be used for the Intelligent mobile equipments such as plate, mobile phone.
It will be understood by those skilled in the art that in flow charts indicate or logic described otherwise above herein and/or
Step may be embodied in and appoint for example, being considered the order list of the executable instruction for realizing logic function
In what computer-readable medium, for instruction execution system, device or equipment (such as computer based system including processor
System or other can be from instruction execution system, device or equipment instruction fetch and the system executed instruction) use, or combine this
A little instruction execution systems, device or equipment and use.For the purpose of this specification, " computer-readable medium " can be it is any can be with
Include, store, communicate, propagate, or transport program is for instruction execution system, device or equipment or in conjunction with these instruction execution systems
System, device or equipment and the device used.
The more specific example (non-exhaustive list) of computer-readable medium include the following: there are one or more wirings
Electrical connection section (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of record screen system characterized by comprising master chip, record screen control module and signal conversion module；Wherein, main
Chip is connect with record screen control module and signal conversion module, and signal conversion module is also connect with record screen control module；
Signal conversion module is used for according to task, to the first screen image signal of master chip output carry out corresponding signal conversion and
Output；Wherein, when the task is record screen, the first screen image signal that the signal conversion module exports master chip is converted
For camera signals, and exports and give record screen control module；
Record screen control module is used to enter camera recording mode after the record screen notice for receiving master chip transmission, turns to signal
Mold changing block is converted and the camera signals exported are recorded.
2. record screen system according to claim 1, which is characterized in that the signal conversion module includes the first conversion module
With the second conversion module, the first conversion module connection master chip of signal conversion module and the second conversion module, the second modulus of conversion
Block is also connect with record screen control module；
The first screen image signal that first conversion module exports master chip is converted into video signal, the second modulus of conversion
The video signal that first conversion module is converted to is converted into camera signals by block.
3. record screen system according to claim 2, which is characterized in that the record screen system further includes driving screen control module,
The signal conversion module further includes third conversion module, the third conversion module connection master chip and drive screen of signal conversion module
Control module；The first screen image signal that the third conversion module exports master chip is converted into the second screen image letter
Number, and export and give the drive screen control module, when driving screen control module and receiving the second screen image signal, driving display screen into
Row display.
4. record screen system according to claim 3, which is characterized in that the record screen control module is receiving playback recording
Video image play-back command after enter playback mode, the video image that plays back will be needed to be sent to master chip and carried out at image
Reason, master chip export the first screen image after carrying out image procossing to the video image that needs play back；When the task is playback,
The first screen image signal that the signal conversion module exports master chip is converted to the second screen image signal and defeated
Out to screen control module is driven, drives screen control module driving display screen and shown.
5. record screen system according to claim 3, which is characterized in that when the task is record screen, the signal conversion
The first screen image signal that master chip exports also is converted to the second screen image signal by module, and is exported and given drive screen control module,
Screen control module driving display screen is driven to be shown.
6. record screen system according to claim 1, which is characterized in that master chip includes the first communication interface and the first video
Image interface, record screen control module includes the second communication interface and the second video image interface；First communication interface of master chip
It is connect with the second communication interface of record screen control module；First video image interface of master chip and record shield the second of control module
The connection of video image interface.
7. record screen system according to any one of claim 1 to 6, which is characterized in that the camera signals are MIPI
CSI-2 signal.
8. a kind of record screen method of the record screen system as described in any one of claims 1 to 7, which is characterized in that the record screen
Method includes recording step, records step and includes:
Step S21: master chip Xiang Luping control module sends record screen notice, and by the external video image signal received or interior
Portion's video signal is processed into the first screen image signal, is sent to signal conversion module；
Step S22: the first screen image signal received is converted into camera signals by signal conversion module, is sent to record screen control
Molding block；
Step S23: record screen control module receives the record screen notice of master chip transmission, into camera recording mode, works as reception
To signal conversion module send camera signals when, start to record.
9. record screen method according to claim 8, which is characterized in that the record screen method further includes replay procedure, described
Replay procedure the following steps are included:
Step S31: record screen control module detects whether to receive the play-back command for the video image that playback is recorded；
Step S32: record screen control module enters playback mode after receiving the play-back command, stops record screen operation, while will stop
The video image that only record screen notice and needs play back is sent to master chip；
Step S33: after master chip receives stopping record screen notice, stop record screen function, and to the view that the needs received play back
Frequency image carries out image procossing, obtains the first screen image signal, and the first screen image signal is sent to signal conversion module；
Step S34: the first screen image signal received is converted into the second screen image signal by signal conversion module, and is sent to
Drive screen control chip；
Step S35: after driving the second screen image signal that screen control chip receives signal conversion module transmission, liquid crystal screen display is driven
Show the second screen image signal received.
10. record screen method according to claim 8 or claim 9, which is characterized in that the recording step further include: when needs stop
Only when record screen, master chip Xiang Luping control module, which is sent, stops record screen notice, while exiting camera recording mode.
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