TWI693836B - Method for controlling projectors and control system thereof - Google Patents

Abstract

A method for controlling projectors includes identifying a first projector and a second projector by using a database, acquiring a first control code of the first projector and a second control code of the second projector after the first projector and the second projector are identified, generating at least one control signal to the first projector and the second projector according to the first control code and the second control code for controlling operation actions of the first projector and the second projector.

Description

Method and control system for controlling projector

The invention discloses a method and a control system for controlling a projector, in particular to a method and a control system having the ability to control multiple projectors with different specifications.

With the rapid development of technology, various forms of projectors have been equipped with the function of independently displaying the projection screen or the function of cooperating the display screen. Users can set various display parameters of the projector through near-end or remote control. As far as the current trend is concerned, projectors that support remote control via the network are more pleasing. Users can remote control or even monitor specific projectors remotely by using a remote control or a smart phone with a network function. Therefore, the projector with the end control function has high operation convenience.

In order to facilitate remote control for users, the projectors currently on the market have built-in dedicated communication protocols to quickly establish Internet connections. However, projectors of different brands have different communication protocols due to the differences in communication specifications. If the user wants to use the central console to control two or more projectors of different brands at the same time, the central console must install a dedicated driver or control program corresponding to each projector to perform the control function. In other words, the central control terminal needs to install multiple sets of drivers or control programs to obtain the exclusive control codes and communication settings of more than two projectors of different brands. For a central control terminal in a single installation environment (operating system), installing multiple sets of drivers or control programs is not only time-consuming and laborious, but also prone to software conflicts or operating systems The problem of instability.

An embodiment of the invention provides a method for controlling a projector, which includes using a database to identify a first projector and a second projector, and after identifying the first projector and the second projector, obtaining the first of the first projector The control code and the second control code of the second projector, and according to the first control code and the second control code, generate at least one control signal to the first projector and the second projector to control the first projector and the second The operating behavior of the projector.

Another embodiment of the present invention provides a control system including a first projector, a second projector, and a central control terminal. The first projector includes a first memory, a first recognition module, and a first processor. The first memory is used to store the first control code list. The first identification module is coupled to the first memory for identifying the first control code from the first control code list. The first processor is coupled to the first identification module and the first memory, and is used to control the operation behavior of the first projector according to the first control code. The second projector includes a second memory, a second identification module, and a second processor. The second memory is used to store the second control code list. The second identification module is coupled to the second memory for identifying the second control code from the second control code list. The second processor is coupled to the second identification module and the second memory, and is used to control the operation behavior of the second projector according to the second control code. The central control end is coupled to the first projector and the second projector. The central control terminal includes a database, a third processor and a transceiver. The database is used to store the identification data of the first projector and the second projector, and the control codes of the first projector and the second projector. The third processor is coupled to the database and used to generate at least one control signal according to the first control code and the second control code. The transceiver is coupled to the third processor for transmitting at least one control signal to the first projector and the second projector. The third processor uses the database to identify the first projector and the second projector. After identifying the first projector and the second projector, the first control code of the first projector and the second control code of the second projector are obtained.

100: control system

10: The first projector

11: Second projector

12: Central control terminal

10a: first memory

10b: the first identification module

10c: the first processor

11a: Second memory

11b: Second identification module

11c: Second processor

12a: database

12b: third processor

12c: Transceiver

12d: input module

12e: display module

S1: The first wired control signal

S2: Second wired control signal

P1: the first packet

P2: second packet

P3: third packet

P4: The fourth packet

T1 to T5: time interval

R: wireless control signal

UI1: select interface

A and B: Group

A1 to A2 and B1 to B3: projector

UI2: Setting interface

W1 to W4 and W6 to W7: Area

W5: Storage key

UI3: Button graphical input interface

BTN1 to BTN5: virtual buttons

S901 to S903: Steps

Figure 1 is a block diagram of an embodiment of the control system of the present invention.

Figure 2 is a schematic diagram of the first projector and the second projector controlled by two wired control signals in the control system of Figure 1.

Figure 3 is a schematic diagram of the first mode in which two wired control signals transmit two packets in the control system of Figure 2 respectively.

Figure 4 is a schematic diagram of the second mode in which two wired control signals transmit two packets in the control system of Figure 2 respectively.

FIG. 5 is a schematic diagram of controlling the first projector and the second projector through the wireless control signal in the control system of FIG.

Figure 6 is a schematic diagram of the wireless control signal transmitting two packets in the control system of Figure 5.

Figure 7 is a schematic diagram of the selection interface displayed by the display module in the control system of Figure 1.

Figure 8 is a schematic diagram of the setting interface of a specific projector displayed by the display module in the control system of Figure 1.

Figure 9 is a schematic diagram of the graphical input interface of the buttons displayed on the display module in the control system of Figure 1.

Figure 10 is a flow chart of the method for controlling the projector in the control system of Figure 1.

FIG. 1 is a block diagram of an embodiment of the control system 100 of the present invention. The control system 100 includes a first projector 10, a second projector 11, and a central control terminal 12. The first projector 10 may be a projector of any specification under any brand. The first projector 10 includes a first memory 10a, a first identification module 10b, and a first processor 10c. The first memory 10a is used to store a first control code (Control Code) list. First A memory 10a may be any kind of memory unit, such as non-volatile memory or electronically erasable programmable read only memory (Electrically Erasable Programmable Read Only Memory), etc. Each control code in the first control code list may be a binary, octal, or hexadecimal data sequence, which may be regarded as a digital command that drives the operation behavior of the first projector 10. The first identification module 10b is coupled to the first memory 10a for identifying the first control code from the first control code list. For example, the first identification module 10b may compare whether the first control code exists in the first control code list to determine the legality of the first control code and the corresponding operation behavior. The first processor 10c is coupled to the first identification module 10b and the first memory 10a, and is used to control the operation behavior of the first projector 10 according to the first control code. The first processor 10c may be any kind of processing element, such as a microprocessor, a chip processor (Scaler), a central processing unit, or the like. Similarly, the second projector 11 can be a projector of any specification under any brand. The second projector 11 includes a second memory 11a, a second identification module 11b, and a second processor 11c. The second memory 11a is used to store a second control code list. The second memory 11a may also be any kind of memory unit, such as a non-volatile memory or an electronically erasable rewritable read-only memory. Each control code in the second control code list can be a binary, octal, or hexadecimal data sequence, which can be regarded as a digital command that drives the operation behavior of the second projector 11. The second identification module 11b is coupled to the second memory 11a for identifying the second control code from the second control code list. For example, the second identification module 11b may compare whether the second control code exists in the second control code list to determine the legality of the second control code and the corresponding operation behavior. The second processor 11c is coupled to the second identification module 11b and the second memory 11a, and is used to control the operation behavior of the second projector 11 according to the second control code. The second processor 11c may be any kind of processing element, such as a microprocessor, a chip processor, or a central processing unit. In the control system 100, the first projector 10 and the second projector 11 may be two projectors with the same or different specifications. If the first projector 10 and the second projector 11 are two projectors with the same specifications, the first control code list and the second control code list in the memory will also be the same. On the contrary, if the first projector 10 and the second projector 11 are two projectors with different specifications, the first control code list and the second control code list in the memory will also be different. The first projector 10 and the second projector 11 are in control Any reasonable hardware changes in the control system 100 belong to the scope disclosed by the present invention.

The central control terminal 12 is coupled to the first projector 10 and the second projector 11 and includes a database 12a, a third processor 12b and a transceiver 12c. The database 12a is used to store identification data of the first projector 10 and the second projector 11. The database 12a may be a memory or a hard disk. The identification data of the first projector 10 and the second projector 11 may be a program code built in a text form of a data exchange language (JavaScript Object Notation File, JSON File). However, the JSON File is only one form of the identification data of the first projector 10 and the second projector 11, and the present invention is not limited to a specific form of identification data. The database 12a is also used to store the control codes of the first projector 10 and the second projector 11. Moreover, the user can also edit (for example, add) the control codes of the first projector 10 and the second projector 11 in the database 12a to expand the database 12a. The third processor 12b is coupled to the database 12a and used to generate at least one control signal according to the first control code and the second control code. The third processor 12b may be a processing element such as a microprocessor or a central processing unit. In other words, after the user selects the first projector 10 and the second projector 11 through the central control terminal 12, the third processor 12b can use the database 12a to identify the first projector 10 and the second projector 11. After identifying the first projector 10 and the second projector 11, the third processor 12 b can obtain the first control code of the first projector 10 and the second control code of the second projector 11. In addition, the third processor 12b may perform processing such as encoding, encryption, or modulation on the first control code and the second control code to generate at least one control signal. The transceiver 12c is coupled to the third processor 12b for transmitting at least one control signal to the first projector 10 and the second projector 11. In the control system 100, the transceiver 12c may be a wired transceiver or a wireless transceiver. For example, the transceiver 12c may be connected to the first projector 10 and the second projector 11 via a cable. The transceiver 12c can also communicate with the first projector 10 and the second projector 11 through Bluetooth broadcasting, infrared transmission, and wireless fidelity (Wi-Fi) transmission. The central control terminal 12 can also selectively introduce devices of the display module 12e and the input module 12d, and their functions will be described in detail later. The operation mode of the control system 100 and the remote operation details of the first projector 10 and the second projector 11 will be described below.

Figure 2 shows that in the control system 100, the first investment is controlled by two wired control signals S1 and S2 A schematic diagram of the projector 10 and the second projector 11. FIG. 3 is a schematic diagram of a first mode in which two wired control signals S1 and S2 transmit two packets P1 and P2 in the control system 100, respectively. FIG. 4 is a schematic diagram of a second mode in which two wired control signals S1 and S2 transmit two packets P1 and P2 in the control system 100, respectively. As shown in FIG. 2, the transceiver 12c of the central control terminal 12 may be a wired transceiver. Therefore, the transceiver 12c can transmit the first wired control signal S1 corresponding to the first projector 10 and the second wired control signal S2 corresponding to the second projector 11. The first wired control signal S1 includes a first packet corresponding to the first control code (the first packet P1 in FIGS. 3 and 4). The second wired control signal S2 includes a second packet corresponding to the second control code (the second packet P2 in FIGS. 3 and 4). Here, the definition of the first packet P1 and the second packet P2 may be two data packets (Data Packet), and the portion of the packet load (Payload) may carry the message of the control code. After the first projector 10 receives the first wired control signal S1, the first processor 10c can decode the first packet P1 to obtain the data of the first control code. Similarly, after the second projector 11 receives the second wired control signal S2, the second processor 11c can decode the second packet P2 to obtain the data of the second control code. The details are as follows.

The transceiver 12c can transmit the first wired control signal S1 and the second wired control signal S2 "simultaneously". In this case, the time when the first projector 10 receives the first packet P1 and the time when the second projector 11 receives the second packet P2 are almost equal, so the effect of synchronous control can be achieved. As shown in FIG. 3, the transceiver 12c can transmit the first wired control signal S1 to the first projector 10 and the second wired control signal S2 to the second projector 11 during the time interval T1. In other words, the first packet P1 and the second packet P2 can be regarded as two packets transmitted simultaneously in the time interval T1. Therefore, when the first processor 10c of the first projector 10 decodes the first packet P1 to obtain the data of the first control code, at the same time, the second processor 11c of the second projector 11 also converts the second packet P2 Decode to obtain the data of the second control code. Furthermore, after the first processor 10c recognizes the data of the first control code by using the first recognition module 10b, it can control the first projector 10 to perform the corresponding operation behavior. After the second processor 11c uses the second identification module 11b to identify the data of the second control code, it can control the second projector 11 to perform the corresponding operation. Since the first projector 10 and the second projector 11 obtain the control codes almost simultaneously, the central control terminal 12 can be regarded as controlling the A projector 10 and a second projector 11.

The transceiver 12c can also transmit the first wired control signal S1 and the second wired control signal S2 "time-sharing". In this case, the time when the first projector 10 receives the first packet P1 is different from the time when the second projector 11 receives the second packet P2. As shown in FIG. 4, the transceiver 12c can transmit the first wired control signal S1 to the first projector 10 in the time interval T2 and the second wired control signal S2 to the second in the time interval T3 Projector 11. In other words, after the first packet P1 is transmitted in the time interval T2, the second packet P2 is transmitted in the time interval T3. The first packet P1 and the second packet P2 can be regarded as two packets transmitted in time-sharing in two different time intervals. Therefore, after the first processor 10c of the first projector 10 decodes the first packet P1 to obtain the data of the first control code, the second processor 11c of the second projector 11 decodes the second packet P2 to obtain the first 2. The information of the control code. Furthermore, after the first processor 10c recognizes the data of the first control code by using the first recognition module 10b, it can control the first projector 10 to perform the corresponding operation behavior. After the second processor 11c uses the second identification module 11b to identify the data of the second control code, it can control the second projector 11 to perform the corresponding operation. Although the first projector 10 and the second projector 11 do not obtain the control codes at the same time, for the central control terminal 12, the transceiver 12c does not need to consume a large amount of power in an instant to "transmit" the first wired control signal S1 and The second wired control signal S2 is sent to the corresponding projector. In other words, although the central control terminal 12 does not use the synchronized method to control the first projector 10 and the second projector 11, the design of the transceiver 12c does not require the use of high-spec high-power transmitters, so it has design flexibility .

FIG. 5 is a schematic diagram of the first projector 10 and the second projector 11 controlled by the wireless control signal R in the control system 100. FIG. 6 is a schematic diagram of two packets P1 and P2 transmitted by the wireless control signal R in the control system 100. As shown in FIG. 5, the transceiver 12c of the central control terminal 12 may be a wireless transceiver. Therefore, the transceiver 12c can transmit or broadcast the wireless control signal R to the first projector 10 and the second projector 11. The wireless control signal R may include a third packet P3 corresponding to the first control code and a fourth packet P4 corresponding to the second control code. The definition of the third packet P3 and the fourth packet P4 can be two data packets, whose packet load Some messages may contain control codes. After the first projector 10 receives the wireless control signal R, the first processor 10c can extract only the data of the first control code in the third packet P3. Similarly, the second processor 11c may only extract the data of the second control code in the fourth packet P4. The details are as follows.

In the wireless control signal R, the third packet P3 and the fourth packet P4 can be transmitted in time-sharing. As shown in FIG. 6, the time interval T4 of the wireless control signal R may include the third packet P3. The time interval T5 of the wireless control signal R may include the fourth packet P4. In other words, the first projector 10 and the second projector 11 will first receive the third packet P3 and then the fourth packet P4. Therefore, after the first projector 10 receives the wireless control signal R, the first processor 10c can sequentially decode the third packet P3 and the fourth packet P4 to sequentially obtain the data of the first control code and the data of the second control code data. Then, the first identification module 10b can identify the data of the first control code and ignore the data of the second control code. Therefore, the first processor 10c can control the first projector 10 to perform the corresponding operation according to the data of the first control code. Similarly, after the second projector 11 receives the wireless control signal R, the second processor 11c can sequentially decode the third packet P3 and the fourth packet P4 to sequentially obtain the data of the first control code and the second control code data of. Then, the second identification module 11b can identify the data of the second control code and ignore the data of the first control code. Therefore, the second processor 11c can control the second projector 11 to perform the corresponding operation according to the data of the second control code. Any reasonable hardware changes of the transceiver 12c and the transmission mode of the control signal are within the scope disclosed by the present invention.

In the control system 100, the first projector 10 and the second projector 11 comply with the cross-standard communication link protocol (PJ Link). Each of the first projector 10 and the second projector 11 may additionally include a serial data transmission port (RS-232 Port), a local area network (Local Area Network) transmission port and And/or infrared transmission port for receiving the wired control signal or wireless control signal transmitted by the aforementioned transceiver 12c.

The central control terminal 12 may also include an input module 12d. The input module 12d can be any data input device such as a keyboard, a mouse, a touch screen, or keys. The input module 12d is coupled to the third processor 12b and the database 12a for inputting data to the database 12a. The input module 12d can also be coupled to the third place only Manager 12b. The third processor 12b can transmit the input data of the input module 12d to the database 12a. As mentioned above, the database 12a in the central control terminal 12 can be used to store the identification data of the first projector 10 and the second projector 11, such as a program code built in a text format of a data exchange language (JSON File). If the identification data of the first projector 10 and the second projector 11 in the database 12a is incomplete, the central control terminal 12 may also provide an editing function. The user can use the editing function to expand the content in the database 12a. For example, the user can use the input module 12d (such as a keyboard) to edit the text content of the data exchange language (JSON File) in the database 12a to modify the identification data of the first projector 10 and the second projector 11. The user can also add the identification data of other brand projectors to the database 12a, or delete the identification data of obsolete brand projectors in the database 12a. After the user uses the input module 12d to expand the identification data of the database 12a, the third processor 12b will be able to identify different brands or projectors of the same brand more accurately and more quickly.

FIG. 7 is a schematic diagram of the selection interface UI1 displayed by the display module 12e in the control system 100. The central control terminal 12 may further include a display module 12e. The display module 12e is coupled to the third processor 12b for generating various interfaces. In FIG. 7, the third processor 12b can control the display module 12e according to the data in the database 12a to generate a selection interface UI1 including at least one projector group. For example, the left side of the selection interface UI1 may be a configuration relationship of a layered structure projector. All projectors can be divided into projector group A and projector group B. The projector group A includes projectors A1 and A2. The projector group B includes projectors B1 to B3. When the user browses the projector group B, selecting the right side of the interface UI1 can display the details of the projectors B1 to B3. For example, the addresses (such as Internet Protocol address), brand, and status of projectors B1 to B3. The user can select the first projector 10 and the second projector 11 from at least one projector group by selecting the interface UI1. For example, the user selects the projector B1 as the first projector 10 and the projector B3 as the second projector 11 by using the check window of the selection interface UI1.

FIG. 8 is a schematic diagram of the setting interface UI2 of the specific projector displayed by the display module 12e in the control system 100. The control system 100 also provides detailed setting functions for each projector. E.g, When the user selects the projector B1 for setting, the display module 12e can display the setting interface UI2 of the projector B1. The setting interface UI2 of the projector B1 may include items such as power setting, quick setting, control code input, and function key setting. Moreover, the area W1 of the setting interface UI2 of the projector B1 may include a plurality of power setting options, such as on and standby options. The area W2 may include multiple options for quick setting, such as data source, lighting mode, aspect ratio, picture mode, volume mode and other options. The area W3 may include a window for input of control codes. The user can input a specific control code (hereinafter referred to as a third control code) through the input module 12d into the window for input of the control code to update the database 12a. Subsequently, the third processor 12b may generate a custom control signal according to the third control code to control the custom operation behavior of the projector B1. The area W4 of the setting interface UI2 of the projector B1 includes at least one virtual button. For example, the area W4 contains function keys Fn1 to Fn4. These function keys (Fn1 to Fn4) can be built-in function keys, which are generated according to the functions corresponding to the first control code and the second control code. However, users can also customize function keys. For example, the setting interface UI2 of the display module 12e can also generate a customized function key according to the third control code (a control code manually input by the user). The setting interface UI2 may also include a storage key W5. After the user adjusts all the settings in the setting interface UI2 of the projector B1, the user can use the save key W5 to store all the setting parameters of the projector B1. In addition, in the control system 100, if the projector B1 is a projector of a specific brand and its identification data has been built in the data exchange language (JSON File), the detailed settings and function keys in the setting interface UI2 will be directly corresponding Projector B1. If the identification data of the projector B1 has not been built in the JSON File, the user can input and edit the function of the projector B1 through the window for input of the control code in the area W3. Subsequently, all the settings are stored in the database 12a using the storage key W5. For example, the user can input the corresponding control code for the “ON” setting of the projector B1 through the area W3. After the control code corresponding to the "ON" setting is stored in the database 12a, the central control terminal 12 can control the "ON" setting function of the projector B1.

FIG. 9 is a schematic diagram of the button graphical input interface UI3 displayed on the display module 12e in the control system 100. As mentioned above, the display module 12e can display at least one virtual key. and, The display module 12e can also display a button graphical input interface UI3 including at least one virtual button. For example, the area W6 of the button graphical input interface UI3 may include a cross direction control key, a return and a confirmation key. The area W7 may include many hot keys, such as a power button BTN1, an option button BTN2, an automatic button BTN3, an energy saving button BTN4, and a signal source button BTN5. The button graphical input interface UI3 may correspond to the control interface of a specific brand projector stored in the database 12a. Therefore, the user can use the familiar button graphical input interface UI3 to adjust the projector's setting parameters more efficiently. In addition, the button graphical input interface UI3 in FIG. 9 can also be used to control multiple projectors in the same group, for example, the selected projector B1 and projector B3 in the group B in FIG. 8. Therefore, when the user uses the button graphical input interface UI3 to set at least one function (such as using the option button BTN2 to set functions such as brightness, volume, etc.), multiple projectors in the same group can be controlled simultaneously. In other words, the central control terminal 12 in the control system 100 can perform a one-to-many projector control function through the graphical input interface UI3 of the buttons, so the convenience of operation can be increased.

FIG. 10 is a flowchart of a method for controlling the projector in the control system 100. The method of performing control of the projector includes steps S901 to S903. Any reasonable steps and technical content changes belong to the scope disclosed by the present invention. Steps S901 to S903 are described below. Step S901: Using the database 12a, identify the first projector 10 and the second projector 11; Step S902: After identifying the first projector 10 and the second projector 11, obtain the first control code of the first projector 10 And the second control code of the second projector 11; step S903: generating at least one control signal to the first projector 10 and the second projector 11 according to the first control code and the second control code to control the first projector 10 and the operation behavior of the second projector 11.

In step S901, if the identification data of the first projector 10 and the second projector 11 of the database 12a (such as the content of the JSON File mentioned above) is incomplete, the user can manually edit the database 12a, for example Various controls of the first projector 10 or the second projector 11 of a specific brand or a specific specification Codes, identification codes, communication modes, control protocols and other parameters are completely added to the database 12a to expand the database 12a. If the identification data of the first projector 10 and the second projector 11 of the database 12a are complete, the user can select the automatic mode to perform the identification process of the projector. Subsequently, the central control terminal 12 can identify the first projector 10 and the second projector 11 according to the database 12a. In step S902, the central control terminal 12 can obtain the first control code of the first projector 10 and the second control code of the second projector 11 in an automated manner. The central control terminal 12 can also be manually input by the user Method to obtain the first control code of the first projector 10 and the second control code of the second projector 11. These control codes may be stored in the control code list of the database 12a according to brands. In step S903, the central control terminal 12 may generate at least one control signal (wired control signal or wireless control signal) to the first projector 10 and the second projector 11 according to the first control code and the second control code, to Control the first projector 10 and the second projector 11 to be turned on, off, or any user-defined operation behavior. In addition, steps S901 to S903 can also be reasonably added with a warning step to inform the user that the central control terminal 12 is currently in an abnormal state that cannot be supported. For example, in step S901, after the user selects to perform the identification process of the projector in the automatic mode, if the specifications of one of the first projector 10 and the second projector 11 cannot be recognized (or recognized) Failed), indicating that the identification data of the first projector 10 and the second projector 11 in the database 12a is incomplete. The central control terminal 12 can generate a warning signal to inform the user that the current database 12a cannot fully support the control functions of the first projector 10 and the second projector 11. After the user receives the warning signal, the central control terminal 12 can be switched to the manual mode to manually expand the database 12a.

In summary, the present invention describes a method of controlling a projector and its control system. The control system can control at least two projectors by wired or wireless transmission. Since the database of the central control terminal in the control system already stores the identification data and control codes of at least two projectors, the central control terminal does not need to install a dedicated driver or control program for each projector. In other words, the central control terminal can directly control the operating behavior of at least two projectors of different brands. Since the control system of the present invention can be regarded as integrating the control setting functions of all projectors in the central control terminal, This increases the convenience of operation for users. In addition, the central control terminal in the control system also provides the expansion function of the database. Therefore, projectors of new brands or specifications can be easily added to the projector group in the central console. In other words, the method and control system for controlling a projector of the present invention have high operation convenience, high scalability, and control functions for supporting multiple projectors of different brands.

The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

100: control system

10: The first projector

11: Second projector

12: Central control terminal

10a: first memory

10b: the first identification module

10c: the first processor

11a: Second memory

11b: Second identification module

11c: Second processor

12a: database

12b: third processor

12c: Transceiver

12d: input module

12e: display module

Claims (18)

A method for controlling a projector, comprising: grouping a plurality of projectors according to data in a database to generate at least one projector group; generating a selection interface including the at least one projector group; through the selection Interface, from the items under the at least one projector group, select a first projector and a second projector; use the database to identify the first projector and the second projector; in identifying the first After a projector and the second projector, obtain a first control code of the first projector and a second control code of the second projector; and according to the first control code and the second control code, At least one control signal is generated to the first projector and the second projector to control an operation behavior of the first projector and the second projector. The method of claim 1, wherein the at least one control signal is a first wired control signal corresponding to a first projector and a second wired control signal corresponding to a second projector, the first wired control The signal includes a first packet corresponding to the first control code, and the second wired control signal includes a second packet corresponding to the second control code. The method according to claim 2, further comprising: after receiving the first wired control signal, the first projector decodes the first packet to obtain data of the first control code; the first projector identifies the Data of the first control code to trigger the operation behavior; after receiving the second wired control signal, the second projector decodes the second packet to obtain data of the second control code; and the second projector Identify the data of the second control code to trigger the operation behavior; Wherein if the first projector and the second projector are two projectors with different specifications, the first packet and the second packet are different. The method of claim 1, wherein the at least one control signal is a wireless control signal, the wireless control signal includes a third packet corresponding to the first control code and a fourth packet corresponding to the second control code , And the third packet and the fourth packet are two packets transmitted in time-sharing. The method according to claim 4, further comprising: after receiving the wireless control signal, the first projector sequentially decodes the third packet and the fourth packet to sequentially obtain data of the first control code and The data of the second control code; the first projector recognizes the data of the first control code and ignores the data of the second control code to trigger the operation behavior; after the second projector receives the wireless control signal, Decoding the third packet and the fourth packet in order to sequentially obtain the data of the first control code and the data of the second control code; and the second projector recognizes the data of the second control code, and Ignore the data of the first control code to trigger the operation behavior; wherein if the first projector and the second projector are projectors with two different specifications, the third packet is different from the fourth packet. The method according to claim 1, further comprising: if the identification data of the first projector and the second projector in the database are incomplete, editing the identification of the first projector and the second projector Information to update the database. The method as described in claim 1 additionally includes: Enter a third control code in the database to update the database; and generate a custom control signal to the first projector or the second projector according to the third control code to control the first A customized operation behavior of the projector or the second projector. The method according to claim 1, further comprising: displaying at least one virtual key or displaying a key graphic input interface including the at least one virtual key according to functions corresponding to the first control code and the second control code. The method of claim 1, wherein the first projector and the second projector comply with a cross-standard communication link protocol (PJ Link), and each of the first projector and the second projector The projector includes a serial data transmission port (RS-232 Port), a local area network (Local Area Network Port) transmission port and/or an infrared transmission port established by the American Electronics Industry Alliance. A control system includes: a first projector, including: a first memory for storing a list of first control codes; and a first identification module coupled to the first memory for use by the Identifying a first control code in the first control code list; and a first processor, coupled to the first identification module and the first memory, for controlling the first projector according to the first control code An operating behavior; a second projector, including: a second memory for storing a list of second control codes; a second identification module, coupled to the second memory, used by the second memory Identified in the second control code list A second control code; and a second processor, coupled to the second identification module and the second memory, for controlling the operation behavior of the second projector according to the second control code; and a The central control terminal, coupled to the first projector and the second projector, includes: a database for storing identification data of the first projector and the second projector, and the first projector and Control codes of the two projectors; a third processor, coupled to the database, for generating at least one control signal according to the first control code and the second control code; a transceiver, coupled to the A third processor, used to transmit the at least one control signal to the first projector and the second projector; and a display module, coupled to the third processor, to be used according to the data in the database Data, generating a selection interface including at least one projector group; wherein the third processor groups a plurality of projectors according to the data in the database to generate the at least one projector group, the third processing The display module controls the display module to generate the selection interface including the at least one projector group. The selection interface is used to select the first projector and the second projection from the items under the at least one projector group Machine, the third processor uses the database to identify the first projector and the second projector, and after identifying the first projector and the second projector, obtains the first of the first projector The control code and the second control code of the second projector. The system of claim 10, wherein the at least one control signal is a first wired control signal corresponding to a first projector and a second wired control signal corresponding to a second projector, the first wired control The signal includes a first packet corresponding to the first control code, and the second wired control signal includes a second packet corresponding to the second control code. The system according to claim 11, wherein after the first projector receives the first wired control signal, the first processor decodes the first packet to obtain data of the first control code, and the second projection After receiving the second wired control signal, the second processor decodes the second packet to obtain the data of the second control code. The system according to claim 10, wherein the at least one control signal is a wireless control signal, and the wireless control signal includes a third packet corresponding to the first control code and a fourth packet corresponding to the second control code , And the third packet and the fourth packet are two packets transmitted in time-sharing. The system according to claim 13, wherein after the first projector receives the wireless control signal, the first processor sequentially decodes the third packet and the fourth packet to sequentially obtain the first control code Data of the second control code, the first recognition module recognizes the data of the first control code, and ignores the data of the second control code. After the second projector receives the wireless control signal, the first The two processors decode the third packet and the fourth packet in order to sequentially obtain the data of the first control code and the data of the second control code, and the second identification module identifies the data of the second control code Data, and ignore the data of the first control code. The system according to claim 10, wherein the central control terminal further comprises: an input module, coupled to the third processor and the database, for inputting data; wherein if the first in the database The identification data of the projector and the second projector is incomplete. The input module is used to edit the identification data of the first projector and the second projector to update the database. The system according to claim 10, wherein the central control terminal further comprises: An input module, coupled to the third processor and the database, for inputting a third control code in the database to update the database; wherein the third processor is based on the third control code , Generate a custom control signal, and send the custom control signal to the first projector or the second projector through the transceiver to control a custom operation of the first projector or the second projector behavior. The system according to claim 10, wherein the central control terminal further comprises: a display module, coupled to the third processor, for displaying according to the functions corresponding to the first control code and the second control code At least one virtual key or display a key graphical input interface including the at least one virtual key. The system according to claim 10, wherein the first projector and the second projector comply with a cross-standard communication link protocol (PJ Link), and each of the first projector and the second projector The projector further includes a serial data transmission port (RS-232 Port), a local area network (Local Area Network) transmission port and/or an infrared transmission port established by the American Electronics Industry Alliance.

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