TWI543002B - Video recording system and video recording method - Google Patents

Description

Image log system and image log recording method

The present invention relates to a remote computer-operated image log system and an image log recording method thereof. Specifically, the present invention relates to an image log system capable of recording and searching for images corresponding to a mouse command and an image log recording method thereof.

The Keyboard-Video-Mouse Switch (KVM Switch) allows users to control multiple controlled computers with a single keyboard, screen and mouse, saving space, energy and hardware costs. The IP-based KVM Switch further enables users of a central control computer to manage multiple remotely controlled computers and view the images transmitted by the controlled computers via the network. .

Please refer to FIG. 1A. FIG. 1A is a conventional network type KVM switch system, which comprises a network type KVM switch 20, a plurality of controlled computers 30 and a central control computer 40A. Under such a structure, the user U in front of the central control computer 40A can manage and manage any of the controlled computers 30 connected thereto through the network type KVM switch 20 via the network. In this architecture, a recording device 50 can be further included, which can be used to record the operation instructions of the user U in front of the central control computer 40A to the network type KVM switch 20 and the pictures returned by the corresponding instructions. In this way, when a problem occurs in the system, the system administrator M can query and eliminate the problem in the recording device 50 via the network or other transmission mode.

Please refer to the first B diagram. The first B is a system administrator who logs in to the recording device 50 via a central control computer 40B to view an image file to search for a problem-producing operation. An example of a scene that you might see when you see it. As shown in the first B, the recording device 50 typically saves the operation as a playable media format, such as an image file. When inquiring about the record in which a controlled computer 30 is operated, the system administrator must play the recorded file of the controlled computer 30. During playback, the system administrator must know exactly when the problem occurred in order to quickly search for the operating program that caused the problem, or try to view it at multiple different points in time, otherwise the system administrator may have to play the entire record. The file can know where the problem is occurring. It is conceivable that searching in such a manual way, if the file is recorded for a long time (for example, up to one month), it takes a long time and may often encounter a situation where nothing is obtained, because the operation that caused the problem may It's just a simple mouse tapping action, and its time in a long time image file is very short.

In another case, the recording device 50 can record the keyboard commands of the user to the network type KVM switch 20 in a textual manner. However, it can be understood that the user's operation on the controlled computer is not only a keyboard command, but also a common operation command. When the system has the most frequent problems, it is usually the result of the user's command to tap the button with the mouse, such as accidentally or deliberately pressing the data to delete the option. When the system administrator wants to find out the point in time when the problem occurs, it is difficult to quickly know from the record file when the user is instructed by what way to click the mouse button. In addition, since the number of controlled computers 30 controlled by the network type KVM switch 20 may be as many as hundreds of controlled computers, the amount of data recorded by the recording device 50 may be as high as possible because of the record office. The resulting record files can be as high as hundreds. For administrators who want to quickly find out the operational problems to eliminate, if you want to play all the records to find the problem, it will be very difficult and inconvenient for the system administrator, which is very time-consuming and human resources. Therefore, it is really necessary to provide a function to quickly search for mouse commands.

An object of the present invention is to provide an image log system and an image log recording method, which can record a mouse signal and an image corresponding thereto.

The invention provides an image log system for remote computer operation, at least Included: a remote management device externally connected to a controlled computer as an interface required for network communication between the controlled computer and a central control computer or other network device, and the remote management device serves as an image The transmitting end and a control signal receiving end, so that the controlled computer can output an image signal according to the mouse signal transmitted from the central control computer, wherein the mouse signal sent by the central control computer includes a representative When the mouse button is tapped, the remote management device adds a time stamp to the tapping signal; a remote recording device is different from the central control computer, and the remote recording device is coupled via the network The remote recording device is configured to record an image signal output by the controlled computer according to the mouse signal, an image corresponding to the tapping signal, and a time corresponding to the tapping signal.

The present invention provides an image log recording method, the method comprising: (A) providing a remote management device directly or via a network connection between a controlled computer and a central control computer for accessing the central control computer One interface of the controlled computer; (B) causing the controlled computer to output an image signal according to access by the remote management device; (C) when the remote management device receives the remote control computer from the central control computer When the control computer inputs an instruction at one of the first time points, the remote management device generates a time stamp correspondingly; and (D) provides a remote recording device to receive the time stamp to record the input instruction, the first time point And the image signal corresponds to one of the target images at the first time point.

C‧‧‧Knock signal

I‧‧‧Control signal

M‧‧‧Manager

U/UL‧‧‧ users

V‧‧‧ video signal

20‧‧‧Network type KVM switch

30‧‧‧Controlled computer

40A/40B‧‧‧Central computer

50‧‧‧recording device

100‧‧‧Image Logging System

200‧‧‧ Remote management device

250‧‧‧Internet interface

300‧‧‧Controlled computer

400‧‧‧Central computer

450‧‧‧Central control unit

500‧‧‧Remote recording device

510‧‧‧User interface

520‧‧‧Area

530‧‧‧ preview screen

The first A is a schematic diagram of a conventional switcher and a video recording system; the first B is a schematic diagram of a conventional image recorder replaying the image; the second figure is a schematic diagram of an embodiment of the image log system of the present invention; And FIG. 3B is a schematic diagram of an embodiment of interaction between a central control computer, a remote management device, a controlled computer, and a remote recording device; and FIGS. 4A and 4B are schematic views of a user interface of the remote recording device; And the fifth figure is a flowchart of an embodiment of the image log recording method of the present invention.

The invention relates to an image log system and an image log recording method for remote computer operation. In a preferred embodiment, the image log system may include a remote management device having a keyboard type video mouse over IP (KVM over IP) for controlling at least one controlled computer.

Please refer to the second figure, which is an embodiment of the image log system 100 of the present invention. In the embodiment, the image log system 100 includes a remote management device 200 and a remote recording device 500. Specifically, as shown in the second figure, the remote management device 200 is connected to the at least one controlled computer 300 directly or via a network as the controlled computer 300 and a central control computer 400 or other network device. One of the interfaces required for communication. The remote management device 200 captures the video signal output by the controlled computer 300 according to the operation of the central control computer 400, and then converts the image into a network packet that can be transmitted on the network after being compressed. The road transmits the network packet to the central control computer 400. On the other hand, the central control computer 400 can decompress the network packet corresponding to the image signal after receiving the network packet through the network to restore the same or related image signal, so as to be connected to the central computer 400. Displayed on the screen. As a result, the user of the central control computer 400 feels as if sitting directly in front of the controlled computer 300.

In addition, the remote management device 200 itself can also directly connect a set of keyboard, screen and mouse control devices 450 for a user UL to operate at the near end of the remote management device 200.

As described above, in the embodiment, the remote management device 200 is preferably a network type keyboard-video-mouse switching device. In detail, the remote management device 200 is externally connected to at least one controlled computer 300. In a preferred embodiment, the controlled computer 300 can be a desktop computer, a server, a manufacturing facility, or the like, but is not limited thereto. The remote management device 200 can be connected thereto via an input/output interface of the controlled computer 300. The input/output interface of the controlled computer 300 may include an input interface such as an image signal output, a mouse/keyboard signal input interface, and/or a universal serial bus interface (USB interface). For example, the input/output interface of the controlled computer 300 may include VGA (Video Graphics Array), DVI (Digital) Standard video interface such as Visual Interface) and HDMI (High-Definition Multimedia Interface). At the same time, the controlled computer 300 can also have a PS/2 or USB signal interface for receiving the mouse/keyboard command signal output by the remote management device 200.

As shown in the second figure, the remote management device 200 can be coupled to a central control computer 400 via a network. The central control computer 400 includes, but is not limited to, a desktop computer, a notebook computer, a tablet computer, a smart phone, or any other suitable device. In this embodiment, the central control computer 400 has a mouse and a keyboard, so that the user in front of the central control computer 400 can control the remote management device 200 or the controlled computer 300 via the mouse and/or the keyboard. In other embodiments, the central control computer 400 can also include a touch-sensitive input interface instead of a mouse and a keyboard. The user can input commands through the touch-type input interface. Alternatively, the central control computer 400 may include other types of cursor control devices other than a mouse or a keyboard. As shown in the second figure, the central control computer 400 and the remote management device 200 are coupled via a network. Therefore, in the embodiment, the central control computer 400 and the remote management device 200 preferably each have a network interface, and each has a different network address, and can be coupled to each other via the network interfaces. In the present embodiment, the remote management device 200 and the central control computer 400 communicate with each other in a TCP/IP network protocol, but are not limited thereto. Other communication protocols may be used for communication connections in other different embodiments.

Still see the second picture. In this embodiment, the remote management device 200 of the image log system 100 of the present invention serves as a bridge between the central control computer 400 and one or more controlled computers 300 for network communication, so that one or more devices are The control computer 300 can receive the control signal I output by the central control computer 400, for example, the mouse signal M in the control signal. The central control computer 400 can receive the image signal V of the image output by the controlled computer 300 via the remote management device 200, so that the user at the end of the central control computer 400 can manage and control the remote end via the network. The station or a plurality of controlled computers 300. In other words, the remote management device 200 can serve as a network interface required for network communication between the controlled computer 300 and the central control computer 400 or other network devices, and the remote management device 200 can serve as both an image transmission terminal and The control signal receiving end enables the controlled computer 300 to output the image signal V according to the operation of the central control computer 400.

As shown in the second figure, the image log system 100 of the present invention further includes a remote recording device 500. The remote recording device 500 is preferably different from the central control computer 400 and the remote tube. The device 200 has three different network addresses. As shown in the second figure, the remote recording device 500 is also coupled to the remote management device 200 via a network. In this embodiment, the remote recording device 500 is a computer management screen recorder (Video Session Recorder, VSR), such as Control Center Video Session Recorder (CCVSR) of Acer Automation Technology Co., Ltd. And other products, but not limited to this.

Specifically, in an embodiment, as shown in the second figure, the third A picture, and the third B picture, after the central control computer 400 successfully logs into the remote management device 200, the central control computer 400 will be The remote management device 200 manages/operates the controlled computer 300 managed by the remote management device 200. As shown in the second and third B diagrams, the user U in front of the central control computer 400 can cause the central control computer 400 to output one or more relatives by moving the mouse and/or clicking a button on the mouse. The network packet representing the control signal I is sent to the remote management device 200. In this embodiment, the control signal I may include a mouse signal M, a keyboard signal, and/or other command signals.

As shown in FIG. 3A, after the remote management device 200 receives the network packet representing the control signal I sent by the central control computer 400, the remote management device 200 will encapsulate the control signal I from the network. It is taken out and transmitted to the controlled computer 300 selected by the user, so that the central control computer 400 can directly control the controlled computer 300. In response to the control signal I, the controlled computer 300 returns the video signal V to the remote management device 200. The remote management device 200 forwards the network packet representing the image signal V to the central control computer 400 to display an image representing the image signal V on the screen of the central control computer 400. In other words, the remote management device 200 can serve as both the control signal receiving end and the video transmitting end.

Still referring to the third diagram A and the third diagram B, the control signal I issued by the central control computer 400 at the first time point includes the mouse signal M, and the mouse signal M contains a mouse button to be knocked. When the tapping signal C is used as an input command, the remote management device 200 will receive the image signal V generated from the controlled computer 300 in response to the tapping signal C. In this embodiment, in order to enable the administrator to quickly find the relevant image when the problem occurs, the present invention provides a function of retrieving the mouse to be tapped and the corresponding generated image. Therefore, in the embodiment, when the remote management device 200 receives the mouse signal M including the tap signal C from the central control computer 400, the remote management device 200 adds the tap signal C as an input command. The last time stamp (the content preferably includes the first time point) and transmits the time stamped tap signal C to the remote recording device 500. Therefore, the remote recording device 500 will receive the signal C+V, but the central control computer 400 will not receive the signal C+V (only V will be received). After receiving the signal C+V, the remote recording device 500 records, in addition to recording the image signal V, the target of the first time point of the tapping signal C, the first time point and the image signal V as the input command. image.

It should be noted that, in this embodiment, the remote management device 200 preferably does not transmit the entire input command mouse signal M to the remote recording device remote recording device 500, and the remote management device 200 will slide. The non-mobile signal such as the tap signal C is captured in the mouse signal, and the remote recording device 500 preferably receives only the non-mobile signal such as the tap signal C in the mouse signal M from the remote management device 200. Specifically, when the user in front of the central control computer 400 uses the mouse, the user can cause the central control computer 400 to generate the mouse signal M by moving the mouse or tapping the mouse button. Therefore, the mouse signal M may also contain a mobile signal, which represents the movement of the mouse. However, the movement of the mouse generated by the central control computer 400 usually only causes the controlled computer 300 to generate a corresponding cursor movement on the screen, that is, the movement of the mouse does not cause the controlled computer 300 to generate an execution application or The response of the program, therefore, the remote management device 200 only transmits the tap signal C as the input command in the mouse signal M to the remote recording device 500 after adding the time stamp. Preferably, the remote management device 200 does not add a time stamp to the mobile signal, and does not transmit the mouse mobile signal to the remote recording device 500. In this way, data traffic on the network can be reduced and the storage space of the remote management device 500 can be saved. However, in other different embodiments, if the controlled computer 300 can respond to the mouse movement signal, for example, the controlled computer 300 can generate an action corresponding to the execution of the mouse gestures, the remote management device 200 also The associated mobile signal can be transmitted to the remote recording device 500 for storage.

As shown in the second and third B diagrams, after the controlled computer 300 receives the mouse signal M from the remote management device 200, the controlled computer 300 returns the image signal V corresponding to the mouse signal M. . Specifically, the remote management device 200 transmits the video signal V to the central control computer 400 and the remote recording device 500, respectively, so that the user using the central control computer 400 does not perceive the remote control of the central control computer 400. The instructions issued by the device 200 and the controlled computer 300 are actually monitored and recorded. In other words, the remote recording device 500 will be in the central control computer in this embodiment. The user of the 400 is unknowingly recorded the image signal V output by the controlled computer 300 in response to the mouse signal M, the target image corresponding to the tapping signal, and the first time point corresponding to the tapping signal.

In this embodiment, the mouse of the central control computer 400 may actually have a plurality of different buttons. In the case of a general mouse, there are left and middle (rollers) on the mouse. Right button. In this case, the remote management device 500 can distinguish which mouse button is tapped from the tap signal C of the mouse signal. Therefore, by way of example, it is assumed that the right mouse button tapped when the user operates the controlled computer 300 by the central control computer 400 causes the controlled computer 300 to have a problem or causes the controlled computer 300 to malfunction due to remote management. The device 200 can distinguish, from the tap signal C, which button (left button, right button, middle button or other special function button) the user uses the mouse, and the remote management device 200 can provide the information of the input command to the remote end. The recording device 500 is configured to enable the remote recording device 500 to provide a service for searching for the point in time at which the mouse button is tapped and the corresponding image.

In another embodiment, the remote management device 200 can also add a location information to the tap signal C, and transmit the tap signal C to the remote recording device 500 for storage. The position information is generated on behalf of the user in front of the central control computer 400. The image signal V is displayed on the screen of the central control computer 400 when the mouse button is tapped.

In addition, as described above, the remote management device 200 can also directly connect to a group of intermediate control devices 450. In the present invention, the related mouse operation of the controlled computer 300 via the central control device 450 and the corresponding image can also be recorded by the remote recording device 500. In more detail, when another user UL performs a mouse operation on the controlled computer 300 via the central control device 450, the remote recording device 500 can obtain an associated operation screen via the remote management device 200 according to the above description. At the same time, the remote management device 200 also forwards the signal sent by the central control device 450 to the mouse packet and forwards it to the remote recording device 500. In this way, the related mouse operation of the controlled computer 300 via the central control device 450 and the corresponding image can be recorded by the remote recording device 500. That is, in the present invention, not only the mouse of the central control computer 400 is tapped by the remote recording device 500, but also the mouse tap of the central control device 450 located at the proximal end of the remote management device 200 is far away. Recorded by the end recording device 500.

Please refer to the fourth A picture and the fourth B picture. The fourth A and 4B diagrams are a retrieval mechanism provided by the remote recording device 500. Specifically, as shown in the second figure, the system administrator can The remote recording device 500 is boarded remotely via the network. However, in other different embodiments, the system administrator can also log in to the remote recording device 500 at a remote location by the remote recording device 500 by means of a device such as a central control computer 400. After entering the remote recording device 500, the displayed user interface will be an example of the fourth A and fourth B images. As shown in FIG. 4A, the remote recording device 500 of the present invention can provide a plurality of fields in the user interface 510 to set the search range. In other words, the user interface 510 can provide a retrieval mechanism for use by the system administrator to track/exclude problems. As shown in FIG. 4A, the retrieval mechanism can perform image retrieval according to the device name, date range, time range, and/or connection number. However, in other different embodiments, the user interface 510 may also provide other options for setting the search range.

In addition, as shown in FIG. 4A, the user interface 510 can also include a preview screen 530. Specifically, after the administrator M logs in to the remote recording device 500 and the record is assigned to a controlled computer 300 by the foregoing retrieval mechanism, the user interface 510 can display the corresponding controlled computer 300 within the set range. Image of the image. As shown in FIG. 4A, the preview screen 530 may include a plurality of image frames selected from the target screen arranged in time. This preview screen can be a static screen or a dynamic screen. If it is a dynamic screen, when the user moves the mouse over the image screen, the image screen can be continuously played like a GIF image file. By this mechanism, it is possible to quickly search and instantly confirm whether the action displayed in the screen is a problem of the controlled computer 300.

Please refer to the embodiment of the user interface of FIG. In this embodiment, the user can directly circle or set an area 520 on the image screen in the preview screen 530 or when playing back image recording of a controlled computer 300. Assuming that the controlled computer 300 is a wafer cutting device, the preview screen 530 will display a picture of the image output by the wafer cutting device. At this time, the user can draw an area 520 on the preview screen 530 to inform the remote recording device 500 that a specific range of images to be retrieved should be limited, and the mouse must be tapped in the area 520. action. Specifically, the remote recording device 500 searches for an image in which the mouse click C is generated in the region 520 according to the search range set by the user and the region 520. In fact, the remote recording device 500 can compare the generated position information of the mouse click signal C in the search range according to the area 520 drawn by the user. When it is found that the location information is met The tapping signal C of the area 520, the remote recording device 500 provides the target image corresponding to the tapping signal C to the user. In other words, the remote recording device 500 can provide a picture for retrieving the image signal V corresponding to the tap signal C according to the time stamp and/or the generated position information.

The invention further provides an image log recording method, the steps of which include at least the following steps S01 to S04. Step S01 includes providing the remote management device to connect between the controlled computer and the central control computer directly or via a network to access the interface of the controlled computer as the central control computer. As shown in the second figure, the image log system 100 of the present invention includes a remote management device 200 having a web interface 250. In this embodiment, the remote management device 200 can be a network type keyboard-mouse-over-switch (Keyboard video mouse over IP, KVM over IP), but is not limited thereto. The remote management device 200 can be coupled to a plurality of controlled computers 300. Specifically, as shown in the second figure, the network interface 250 of the remote management device 200 can be coupled to the central control computer 400 via a network. The central control computer 400 can transmit a control signal I to the remote management device 200. In detail, the control signal I can include the mouse signal M and/or the keyboard signal. When the user in front of the central control computer 400 inputs an instruction by the mouse, the central control computer 400 generates the mouse signal M according to the instruction. For example, if the user only slides the mouse, the central control computer 400 generates a mouse signal M with a mobile signal. The mobile signal here is representative of the movement of the mouse. After receiving the mouse signal M, the remote management device 200 forwards the mouse signal to the controlled computer 300. In this way, the central control computer 400 can manage and control the controlled computer 300 via the remote management device 200.

Step S02 causes the controlled computer to output an image signal according to access by the remote management device. Specifically, as shown in the second figure, after the controlled computer 300 receives the mouse signal M, the image signal V is returned.

Step S03 includes the remote management device generating a time stamp correspondingly when the remote management device receives an input command from the central control computer to the controlled computer at the first time. Specifically, when the remote management device 200 receives the mouse signal M from the central control computer 400 at the first time, the remote management device 200 can distinguish whether the mouse signal M has a tap signal C as an input command. . Taking the second picture as an example, when the user in front of the central control computer 400 taps a button on the mouse, the mouse signal M generated by the central control computer 400 will contain the tap signal C corresponding to the tap. As an input command. In this embodiment, the remote management device 200 can distinguish the tap signal C. The corresponding button on the mouse, such as the right, center or left button. When a tap signal C is found, the remote management device 200 will add a time stamp to the tap signal C for the time stamp to search after searching for the image file. In this embodiment, after the remote management device 200 adds the time stamp, the tap signal C will be forwarded to the remote recording device 500 for storage.

Step S04 includes providing a remote recording device receiving a time stamp to record an input image, a first time point, and a target image corresponding to the first time point in the image signal. Specifically, as shown in the second figure, the remote management device 200 will transmit the mouse signal M to the remote recording device 500 for storage. At the same time, the remote management device 200 also forwards the image signal V corresponding to the mouse signal received from the controlled computer 300 to the remote recording device 500. The remote recording device 500 can store the nature of the input command (eg, tapping the left button), the first time point, and the target image corresponding to the first time point in the image signal V. However, in another embodiment, the remote management device 200 may not forward the entire mouse signal M to the remote recording device 500. The remote management device 200 can forward only the tap signal C (and its time stamp) to the remote recording device 500. At the same time, the remote management device 200 does not need to forward all the video signals V to the remote recording device 500. That is, the remote management device 200 can forward only the portion of the video signal V corresponding to the tap signal C to the remote recording device 500 for storage.

In various embodiments, the image logging method may further include providing, by the remote recording device, a retrieval mechanism by using a user interface, wherein the retrieval mechanism further comprises at least setting an area or providing a preview image for retrieving the tap. Signal. Specifically, as shown in FIG. 4A and FIG. 4B, the remote recording device 500 can provide a plurality of fill-in spaces in the user interface 510 to set the search range. In other words, the user interface 510 can provide a retrieval mechanism for use by the system administrator to track/exclude problems. As shown in FIG. 4A, the retrieval mechanism can perform image retrieval according to the device name, date range, time range, and/or connection number. However, in the example of FIG. B, the user can also perform a search by setting an area 520 in the image screen. The remote recording device 200 searches for a tap signal C based on the set region 520 to be generated from the region. Specifically, when receiving the tap signal C, the remote management device 200 may add a location information to the tap signal C and forward it to the remote recording device 500. When the location information is generated to match the area 520, the remote recording device 200 The target image corresponding to the tap signal is provided to the user for reference.

The present invention has been described in connection with specific examples as examples, but these examples may have other alternatives, modifications, and variations. Accordingly, the examples presented herein are illustrative and not restrictive. There may be other changes in the scope of the patent application.

S01~S04‧‧‧Steps

Claims (8)

An image logging system for remote computer operation, comprising at least: a remote recording device; a remote management device connected directly between a controlled computer and a central control computer via a network as the central control The computer operates one of the interfaces of the controlled computer; wherein the controlled computer can output an image signal according to the operation of the remote management device, wherein the remote management device receives the computer from the central control computer for the controlled computer When a command is input at a first time point, a time stamp corresponding to the first time point is generated, and the remote management device corresponds the input command, the time stamp, and the image signal to the first time point. The target image is forwarded to the remote recording device via the network; wherein the remote recording device is coupled to the remote management device via a network, and the remote recording device can record the input command according to the time stamp. a target image corresponding to the first time point in the image signal, and a retrieval mechanism provided by a user interface, the retrieval mechanism including at least the input instruction A preview screen for the target image for retrieval. The image log system of claim 1, wherein the input command further comprises a non-mobile signal of the mouse. The image log system of claim 2, wherein the time stamp includes one of the non-mobile signals to generate location information, and the remote recording device records the generated location information. The image logging system of claim 3, wherein the remote recording device further provides a retrieval mechanism by a user interface, wherein the retrieval mechanism includes filtering the generated location information according to an input region to retrieve the Enter the command or the target image. The image log system of claim 1, wherein the remote management device is one selected from the group consisting of a KVM switch and a network type KVM switch. The image log system of claim 1, wherein the remote recording device is a shadow Like a side recorder. An image log recording method, the method comprising at least the following steps: (A) providing a remote management device directly or via a network connection between a controlled computer and a central control computer for accessing the central control computer One interface of the controlled computer; (B) causing the controlled computer to output an image signal according to access by the remote management device; (C) when the remote management device receives the remote control computer from the central control computer When the control computer inputs an instruction at one of the first time points, the remote management device generates a time stamp corresponding to the first time point, and the input command, the time stamp, and the image signal correspond to the first One of the target images is forwarded to the network at a time; and (D) providing a remote recording device to receive the input command, the time stamp and the target image via the network, the remote recording device can record the time mark according to the time stamp Inputting the command, the first time point, and the target image corresponding to the first time point in the image signal; (E) providing, by the remote recording device, a retrieval mechanism by using a user interface, wherein the retrieval mechanism includes at least According to the input command and provide a preview of the target image for retrieval. The method of claim 7, wherein the step (C) further comprises at least the following steps: (C-1) when the remote management device receives the input command, adding the input command to the time stamp One of the steps of generating location information; wherein the step (E) further comprises the following steps: (E-1) screening the generated location information according to the input region by the retrieval mechanism to retrieve the input instruction or the target image.