CN109889691B - Synchronization method and synchronization system for scanning imaging - Google Patents
Synchronization method and synchronization system for scanning imaging Download PDFInfo
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- CN109889691B CN109889691B CN201910312771.7A CN201910312771A CN109889691B CN 109889691 B CN109889691 B CN 109889691B CN 201910312771 A CN201910312771 A CN 201910312771A CN 109889691 B CN109889691 B CN 109889691B
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Abstract
The method comprises the steps of firstly analyzing synchronous information of an acquired video source to obtain the synchronous information of the video source, wherein the synchronous information comprises line blanking and field blanking in the video source. Based on the synchronization information, galvanometer drive synchronization information and light source drive synchronization information are generated. The galvanometer driving synchronous information and the light source driving synchronous information are both based on the synchronous information of the video source, so that the galvanometer movement and the light source driving synchronous information are synchronized. The galvanometer driving synchronous information determines the motion state of the galvanometer, and the light source driving synchronous information determines the working state of the light source; because the light source driving synchronous period and the position of the vibrating mirror in the motion period have one-to-one correspondence, when the light source is driven and controlled, the light source can start to display effective data in video data at a fixed position in the motion period of the vibrating mirror, and the synchronization of the scanning of the vibrating mirror and the video data display of the light source is realized.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a synchronization method and a synchronization system for scanning imaging.
Background
In the field of projection display technology, the main projection methods include: CRT (Cathode Ray Tube), DLP (Digital Light Processing), LCD (Liquid Crystal Display), LCOS (Liquid Crystal On Silicon), and the like.
In the above projection method, the Video signals used, such as HDMI (High Definition Multimedia Interface), DVI (Digital Video Interface), DP (Display Port), VGA (Video Graphics Array), etc., all use the internal line blanking and field blanking signals as their synchronization references. The receiving or displaying device of the video signal needs to locate and analyze the video effective information in the input information according to the line blanking and the field blanking synchronous signals of the video input.
The galvanometer scanning imaging system is used as a novel imaging system, and the galvanometer plays a core role in the imaging process. Due to the characteristics of the galvanometer, the oscillating mode of the galvanometer usually adopts a constant-speed periodic oscillating mode. In the scanning and imaging process of the laser matched with the galvanometer, the input video signal and the galvanometer have independent synchronization and movement modes, so that the traditional scanning and imaging synchronization method is difficult to be applied to a galvanometer scanning and imaging system.
Disclosure of Invention
In order to solve the above technical problems, the present application provides a synchronization method and a synchronization system for scanning imaging, so as to achieve the purpose of providing a synchronization method suitable for a galvanometer scanning imaging system.
In order to achieve the technical purpose, the embodiment of the application provides the following technical scheme:
a synchronous method of scanning imaging is applied to a galvanometer scanning imaging system, and comprises the following steps:
acquiring a video source, and analyzing synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
converting the video source to video data comprising a plurality of video periods, the video periods comprising a video active area and a video blanking area;
acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship;
acquiring galvanometer driving synchronous information according to the video synchronous information, wherein the galvanometer driving synchronous information comprises a plurality of galvanometer driving synchronous periods which correspond to the video synchronous periods one to one, and the galvanometer driving synchronous periods comprise a stop area and a motion area;
driving and controlling a light source of the galvanometer scanning imaging system according to the light source driving synchronization information so as to enable the light source to display the video data;
and driving and controlling a galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
Optionally, the method for acquiring the light source driving synchronization information and the galvanometer driving synchronization information includes:
acquiring the light source driving synchronous information and the galvanometer driving synchronous information according to the video synchronous information; and the light source driving synchronous information and the galvanometer driving synchronous information are in a synchronous locking relation.
Optionally, the motion state of the galvanometer is a rotation angle of the galvanometer in one motion cycle.
Optionally, the obtaining the light source driving synchronization information according to the motion state of the galvanometer includes:
and determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to acquire the light source driving synchronization information.
A synchronous system of scanning imaging is applied to a galvanometer scanning imaging system, and comprises:
the video source analysis module is used for acquiring a video source and analyzing the synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
the data acquisition module is used for converting the video source to video data comprising a plurality of video periods, wherein each video period comprises a video effective area and a video blanking area;
the driving acquisition module is used for acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship;
the galvanometer driving synchronization module is used for acquiring galvanometer driving synchronization information according to the video synchronization information, wherein the galvanometer driving synchronization information comprises a plurality of galvanometer driving synchronization periods which correspond to the video synchronization periods one by one, and the galvanometer driving synchronization periods comprise a stop area and a motion area;
the light source control module is used for driving and controlling the light source of the galvanometer scanning imaging system according to the light source driving synchronous information so as to enable the light source to display the video data;
and the galvanometer control module is used for driving and controlling the galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
Optionally, the light source driving synchronization information and the galvanometer driving synchronization information are in a synchronous locking relationship.
Optionally, the motion state of the galvanometer is a rotation angle of the galvanometer in one motion cycle.
Optionally, the driving obtaining module obtains the light source driving synchronization information according to the video synchronization information,
and determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to acquire the light source driving synchronization information.
It can be seen from the foregoing technical solutions that, the embodiments of the present application provide a synchronization method and a synchronization system for scanning imaging, where the synchronization method for scanning imaging firstly performs synchronization information analysis on an acquired video source to obtain video synchronization information of the video source, and a video synchronization period in the video synchronization information includes a field blanking area, a plurality of line blanking areas, and a video effective area located between adjacent line blanking areas; and acquiring light source driving synchronous information based on the video synchronous information or the motion state of the galvanometer, and acquiring the galvanometer driving synchronous information based on the video synchronous information. The light source driving synchronous information and the galvanometer driving synchronous information are acquired based on the synchronous information of a video source, and the light source driving synchronous period and the position of the galvanometer in one motion period have one-to-one correspondence, so that when the light source is driven and controlled according to the light source driving synchronous information, the light source can start to display effective data in video data at a fixed position in the galvanometer motion period, and the synchronization of galvanometer scanning and video data display of the light source is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flowchart of a synchronization method for scanning imaging according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a video source format;
fig. 3 is a schematic flowchart of a synchronization method for scanning imaging according to another embodiment of the present application;
FIG. 4 is a schematic diagram of the relationship between video synchronization information, light source driving synchronization information, and galvanometer driving synchronization information;
FIG. 5 is a diagram illustrating the correspondence between the driving voltage of the galvanometer and the video active area, the video blanking area, the stop area, and the motion area;
FIG. 6 is a schematic diagram of the relationship between video synchronization information, light source driving synchronization information, and galvanometer driving synchronization information;
fig. 7 is a schematic diagram of a possible system structure of a synchronization method for scanning imaging according to an embodiment of the present application;
fig. 8 is a schematic flowchart of a synchronization method for scanning imaging according to still another embodiment of the present application;
fig. 9 is a schematic diagram of a possible system structure of a synchronization method for scanning imaging according to another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a scanning imaging synchronization method, as shown in fig. 1, which is applied to a galvanometer scanning imaging system, and the scanning imaging synchronization method includes:
s101: acquiring a video source, and analyzing synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
s102: converting the video source to video data comprising a plurality of video periods, the video periods comprising a video active area and a video blanking area;
s103: acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship;
s104: acquiring galvanometer driving synchronous information according to the video synchronous information, wherein the galvanometer driving synchronous information comprises a plurality of galvanometer driving synchronous periods which correspond to the video synchronous periods one to one, and the galvanometer driving synchronous periods comprise a stop area and a motion area;
s105: driving and controlling a light source of the galvanometer scanning imaging system according to the light source driving synchronization information so as to enable the light source to display the video data;
s106: and driving and controlling a galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
Referring to fig. 2, fig. 2 is a schematic format diagram of a video source, and as can be seen from fig. 2, the video source in fig. 2 is composed of an active area, a line blanking area and a field blanking area, wherein the active area carries a video image signal of a video; in a video display system, a video image signal is not effectively present in the line blanking region and the field blanking region, and is used only as a synchronizing signal for video.
More specifically, in the era of analog video, imaging of video images relies on an electron gun to scan sequentially from left to right across a screen. When the gun scans to the right-most end of a line, it needs to go back to the left-most end of the screen and move down a line, scanning from left to right again. The scan gap of the gun from the rightmost end back to the leftmost end is the duration of the line blanking region in the video source. When the electron gun scans the last line of a frame of image, the scanning interval from the last line of the screen back to the leftmost end of the first line of the screen is the duration of the field blanking region in the video source.
After the digital video era, in order to convert analog signals into digital signals normally, the line blanking area and the field blanking area are reserved in the video source in the form of digital signals.
In the galvanometer scanning imaging system, a light source is composed of a plurality of optical fibers, and after the galvanometer scans from one end to the other end, a frame of picture finishes the scanning process. When the galvanometer retraces from the other end, the scanning of another frame of picture is completed, namely, only one gap exists between the two frames of pictures, and the traditional line blanking area does not exist.
Therefore, in the present embodiment, it is necessary to convert the video source shown in fig. 2 to convert the video source into video data including a plurality of video periods including one video active area and one video blanking area as shown in fig. 4. Wherein the video blanking area does not contain valid video data, so that the light source does not display valid video data in the video blanking area, and in the process, the galvanometer finishes the process of ending the scanning towards one end, stopping the scanning towards the other end and starting the scanning towards the other end. More specifically, because the galvanometer scanning imaging system is a multi-point simultaneous scanning technology, that is, a light source in the galvanometer scanning system comprises a plurality of parallel sub-light sources, when the light source finishes scanning from one end to the other end, scanning of a frame of image is finished, and data of the frame of image is stored in a video effective area; when the light source returns from the other end to the start end to perform the scanning process of the next frame image again, the output of the valid video data is not performed, corresponding to the video blanking area. Due to the working characteristics of the galvanometer scanning imaging system, only one video blanking area is arranged in the video period of the video data.
The one-to-one correspondence relationship between the light source driving synchronization period and the position of the galvanometer in one motion period is as follows: the video blanking area corresponds to a fixed rotation angle in a galvanometer rotation cycle, for example, optionally, it is assumed that a range of the rotation angle of one motion cycle of the galvanometer is-12 ° - + -12 °, and areas located from-11 ° to-12 ° and from +11 ° to +12 ° correspond to the video data blanking area. I.e., the process of rotating the galvanometer from-11 ° to-12 ° and then back to-11 ° and the process of rotating the galvanometer from +11 ° to +12 ° and then back to +11 °, the video data output by the light source is the data in the video blanking area (i.e., the valid video data is not output).
In this way, the video blanking interval duration in the video data corresponds to the fixed rotation angle range of the galvanometer, thereby achieving synchronization of the galvanometer scanning process and the light source display video data.
On the basis of the above embodiment, in another embodiment of the present application, as shown in fig. 3, the synchronization method for scanning imaging includes:
s201: acquiring a video source, and analyzing synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
s202: converting the video source to video data comprising a plurality of video periods, the video periods comprising a video active area and a video blanking area;
s203: acquiring the light source driving synchronous information and the galvanometer driving synchronous information according to the video synchronous information; the light source driving synchronous information and the galvanometer driving synchronous information are in a synchronous locking relation; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship;
the galvanometer driving synchronous information comprises a plurality of galvanometer driving synchronous periods which correspond to the video synchronous periods one by one, and the galvanometer driving synchronous periods comprise a stopping area and a moving area;
s204: driving and controlling a light source of the galvanometer scanning imaging system according to the light source driving synchronization information so as to enable the light source to display the video data;
s205: and driving and controlling a galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
In this embodiment, a specific process of a feasible method for acquiring light source driving synchronization information is given, and referring to fig. 4 and 5, fig. 4 is a schematic diagram of a relationship among video synchronization information, light source driving synchronization information, and galvanometer driving synchronization information; fig. 5 is a schematic diagram showing the correspondence relationship between the galvanometer driving voltage and the video active area, the video blanking area, the stop area and the motion area.
As can be seen from fig. 4 and 5, the time interval of the video blanking area coincides with the light source blanking area in the light source driving synchronization information. When the galvanometer swings to the light source blanking area, the corresponding video data does not include valid video data, namely, the video is not output, namely, the light source does not output a valid signal. When the galvanometer swings to the effective area of the light source, the light source outputs according to the video data of the corresponding point, thereby realizing the synchronization of the light source and the galvanometer.
Specifically, in the present embodiment, the galvanometer moves based on the galvanometer driving synchronization information in fig. 4, and the light source outputs video data based on the light source driving synchronization information in fig. 4. And the galvanometer driving synchronous information and the light source driving synchronous information are in synchronous locking relation, so that the light source driving can always output corresponding video data at the fixed galvanometer moving position.
To further illustrate the synchronization locking relationship between the light source driving synchronization information and the galvanometer synchronization information, referring to fig. 6, if the video synchronization information is used as a reference in fig. 6, for example, if the first point of the vertical blanking interval is 0 position and the point before the vertical blanking interval is total position, the data of the entire video frame can be numbered. The active area, the line blanking area and the field blanking area correspond to a specific number and are fixed in all videos. This is the meaning of video synchronization information.
The stop zone and the moving zone in the galvanometer driving synchronization information can also correspond to a specific number and are fixed in all periods. For example, the first point of the stop zone corresponds to the first point of the stop zone numbered y, at which position y is always present, regardless of which cycle of the galvanometer movement.
For the same reason, the light source blanking area and the driving effective area in the light source driving synchronization information also correspond to a specific number, for example, the first point of the light source blanking area is the x position. The first point in the blanking region of the light source always corresponds to the x position.
When other synchronization information is fixed in a specific area in a numbering system based on video synchronization information, the synchronization information is in a locked relationship.
Correspondingly, an embodiment of the present application further provides a possible system structure for implementing the synchronization method for scanning and imaging provided in this embodiment, as shown in fig. 7, a video analysis module is configured to receive a video source, and perform synchronization information analysis on the video source to obtain video synchronization information; converting the video source to convert the video source into video data comprising a plurality of video periods, and storing the video data in the memory;
meanwhile, the video analysis module obtains galvanometer driving synchronous information and light source driving synchronous information according to the video synchronous information; and the galvanometer driving synchronous information is transmitted to the galvanometer driving module, so that the galvanometer driving module controls the motion of the galvanometer according to the galvanometer driving synchronous information. And transmitting the light source driving synchronous information to the light source driving module so that the light source driving module reads the video data stored in the memory and drives the light source according to the light source driving synchronous information. In addition, fig. 7 also shows the structures of the light source, the galvanometer, the lens and the like in the galvanometer scanning imaging system.
On the basis of the above embodiment, in another embodiment of the present application, as shown in fig. 8, the synchronization method for scanning imaging includes:
s301: acquiring a video source, and analyzing synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
s302: converting the video source to video data comprising a plurality of video periods, the video periods comprising a video active area and a video blanking area;
s303: acquiring the galvanometer driving synchronization information according to the video synchronization information; the galvanometer driving synchronous information comprises a plurality of galvanometer driving synchronous periods which correspond to the video synchronous periods one by one, and the galvanometer driving synchronous periods comprise a stopping area and a moving area;
s304: determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to obtain the light source driving synchronization information;
s305: driving and controlling a light source of the galvanometer scanning imaging system according to the light source driving synchronization information so as to enable the light source to display the video data;
s306: and driving and controlling a galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
In this embodiment, the moving state of the galvanometer is a rotation angle of the galvanometer in one moving cycle.
Correspondingly, an embodiment of the present application further provides a possible system structure for implementing the synchronization method for scanning and imaging provided in this embodiment, as shown in fig. 9, a video analysis module is configured to receive a video source, and perform synchronization information analysis on the video source to obtain video synchronization information; converting the video source to convert the video source into video data comprising a plurality of video periods, and storing the video data in the memory;
meanwhile, the video analysis module obtains the galvanometer driving synchronous information according to the video synchronous information and transmits the galvanometer driving synchronous information to the galvanometer driving module, so that the galvanometer driving module controls the motion of the galvanometer according to the galvanometer driving synchronous information.
The galvanometer feeds back the motion angle to the light source driving module in real time in the motion process, and the light source driving module acquires the light source driving synchronization information according to the rotation angle of the galvanometer in one motion period. In this embodiment, the rotation angle of the galvanometer in one motion cycle needs to be transmitted to the light source driving module in real time. Still referring to fig. 6, in this case, the determination of the z position may not pass through the y position and the interval between the two positions, but the video output of the light source is determined by itself in terms of the absolute angle of motion of the galvanometer. For example, the z position corresponds to +10 degrees of the galvanometer, and then the first effective pixel is output when the galvanometer is just rotated to +10 degrees through galvanometer angle feedback. The mode can also realize the synchronization of the galvanometer and the video. In addition, fig. 9 also shows the structures of the light source, the galvanometer, the lens and the like in the galvanometer scanning imaging system.
The following describes a synchronization system for scanning imaging provided in an embodiment of the present application, and the synchronization system for scanning imaging described below and the synchronization method for scanning imaging described above may be referred to in correspondence.
Correspondingly, the embodiment of the present application provides a synchronous system for scanning imaging, which is applied to a galvanometer scanning imaging system, and the synchronous system for scanning imaging includes:
the video source analysis module is used for acquiring a video source and analyzing the synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
the data acquisition module is used for converting the video source to video data comprising a plurality of video periods, wherein each video period comprises a video effective area and a video blanking area;
the driving acquisition module is used for acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship;
the galvanometer driving synchronization module is used for acquiring galvanometer driving synchronization information according to the video synchronization information, wherein the galvanometer driving synchronization information comprises a plurality of galvanometer driving synchronization periods which correspond to the video synchronization periods one by one, and the galvanometer driving synchronization periods comprise a stop area and a motion area;
the light source control module is used for driving and controlling the light source of the galvanometer scanning imaging system according to the light source driving synchronous information so as to enable the light source to display the video data;
and the galvanometer control module is used for driving and controlling the galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
Optionally, the drive obtaining module obtains the video synchronization information, the light source driving synchronization information and the galvanometer driving synchronization information in a synchronous locking relationship.
Optionally, the motion state of the galvanometer is a rotation angle of the galvanometer in one motion cycle.
Optionally, the driving obtaining module obtains the light source driving synchronization information according to the video synchronization information,
and determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to acquire the light source driving synchronization information.
In summary, the embodiment of the present application provides a synchronization method and a synchronization system for scanning imaging, where the synchronization method for scanning imaging firstly analyzes synchronization information of an acquired video source to obtain video synchronization information of the video source, and a video synchronization period in the video synchronization information includes a vertical blanking area, a plurality of horizontal blanking areas, and a video effective area located between adjacent horizontal blanking areas; and acquiring light source driving synchronous information based on the video synchronous information or the motion state of the galvanometer, and acquiring the galvanometer driving synchronous information based on the video synchronous information. The light source driving synchronous information and the galvanometer driving synchronous information are acquired based on the synchronous information of a video source, and the light source driving synchronous period and the position of the galvanometer in one motion period have one-to-one correspondence, so that when the light source is driven and controlled according to the light source driving synchronous information, the light source can start to display effective data in video data at a fixed position in the galvanometer motion period, and the synchronization of galvanometer scanning and video data display of the light source is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A synchronous method for scanning imaging is characterized in that the synchronous method is applied to a galvanometer scanning imaging system, and comprises the following steps:
acquiring a video source, and analyzing synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
converting the video source to video data comprising a plurality of video periods, the video periods comprising a video active area and a video blanking area;
acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the motion state of the galvanometer is the rotation angle of the galvanometer in one motion cycle; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the time interval of the light source blanking area is consistent with the time interval of the video blanking area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship, and the method comprises the following steps: the video blanking area corresponds to a fixed rotation angle in a rotation period of the galvanometer;
acquiring galvanometer driving synchronous information according to the video synchronous information, wherein the galvanometer driving synchronous information comprises a plurality of galvanometer driving synchronous periods which correspond to the video synchronous periods one to one, and the galvanometer driving synchronous periods comprise a stop area and a motion area;
driving and controlling a light source of the galvanometer scanning imaging system according to the light source driving synchronization information so as to enable the light source to display the video data;
and driving and controlling a galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
2. The method of claim 1, wherein the method for obtaining the light source driving synchronization information and the galvanometer driving synchronization information comprises:
acquiring the light source driving synchronous information and the galvanometer driving synchronous information according to the video synchronous information; the light source driving synchronous information and the galvanometer driving synchronous information are in a synchronous locking relation, and the synchronous locking relation is that the light source driving synchronous information and the galvanometer driving synchronous information are fixed in a specific area in a numbering system taking the video synchronous information as a reference.
3. The method of claim 1, wherein the obtaining light source driving synchronization information according to the motion state of the galvanometer comprises:
and determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to acquire the light source driving synchronization information.
4. A synchronous system for scanning imaging is characterized in that the synchronous system is applied to a galvanometer scanning imaging system, and the synchronous system for scanning imaging comprises:
the video source analysis module is used for acquiring a video source and analyzing the synchronization information of the video source to acquire video synchronization information; the video synchronization information comprises a plurality of video synchronization periods, and each video synchronization period comprises a vertical blanking area, a plurality of horizontal blanking areas and a video effective area positioned between adjacent horizontal blanking areas;
the data acquisition module is used for converting the video source to video data comprising a plurality of video periods, wherein each video period comprises a video effective area and a video blanking area;
the driving acquisition module is used for acquiring light source driving synchronization information according to the video synchronization information or the motion state of the galvanometer; the motion state of the galvanometer is the rotation angle of the galvanometer in one motion cycle; the light source driving synchronous information comprises a plurality of light source driving synchronous periods which are in one-to-one correspondence with the video synchronous periods, and each light source driving synchronous period comprises a light source blanking area and a driving effective area; the time interval of the light source blanking area is consistent with the time interval of the video blanking area; the light source driving synchronous period and the position of the galvanometer in one motion period have a one-to-one correspondence relationship, and the method comprises the following steps: the video blanking area corresponds to a fixed rotation angle in a rotation period of the galvanometer;
the galvanometer driving synchronization module is used for acquiring galvanometer driving synchronization information according to the video synchronization information, wherein the galvanometer driving synchronization information comprises a plurality of galvanometer driving synchronization periods which correspond to the video synchronization periods one by one, and the galvanometer driving synchronization periods comprise a stop area and a motion area;
the light source control module is used for driving and controlling the light source of the galvanometer scanning imaging system according to the light source driving synchronous information so as to enable the light source to display the video data;
and the galvanometer control module is used for driving and controlling the galvanometer of the galvanometer scanning imaging system according to the galvanometer driving synchronous information so as to enable the motion of the galvanometer to be synchronous with the video data display of the light source.
5. The system of claim 4, wherein the light source driving synchronization information and the galvanometer driving synchronization information are in a synchronization locking relationship, and the synchronization locking relationship is that the light source driving synchronization information and the galvanometer driving synchronization information are fixed in a specific region in a numbering system based on the video synchronization information.
6. The system of claim 4, wherein the driver obtaining module obtains light source driving synchronization information based on the video synchronization information,
and determining the corresponding relation between a blanking area and a driving effective area in the light source driving synchronization period and the rotation angle of the galvanometer according to the rotation angle of the galvanometer in one movement period so as to acquire the light source driving synchronization information.
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