TW201442464A - The controlling system and the method of the remote device and the server - Google Patents

Abstract

The controlling system and the method of the remote device and the server applies to remote the device. The device control method comprises of steps. A server generates a plurality of the virtual machine. The virtual machine generates a virtual port. When the client connects to the server, the server selects one of the virtual machines. The client connects to the selected virtual machine. The virtual machine maps the virtual port to the target port of the client. The virtual machine sends the operation command to the target port via the virtual port. When the client loses connection, the virtual machine stores the operation command into the buffer. The client connects the virtual machine again; the virtual machine sends the operation command in the buffer to device and the target port.

Description

Remote peripheral control system, method and remote server thereof

A peripheral control system, method and server thereof are particularly related to a remote peripheral control system, method and remote server thereof.

The conventional virtualization host only provides an environment for the text input interface, and there are many restrictions on the process for the user to use. Therefore, as the network architecture matures and the computing power of the computer increases, the virtualization host can provide multiple sets of Virtual Desktop Infrastructures to different terminal devices (Terminal). The user can connect to the virtual machine in the remote server through the terminal device, and display the operation screen of the window environment running by the remote server on the screen of the terminal device.

The remote server has the ability to provide services for multiple virtual machines, so the information manager can perform subordinates of the virtual machine on the remote server. In general, terminal devices do not have to have fast computing power. Therefore, information management personnel can use a personal computer (PC) or a thin computer (Thin Client) as a terminal device. For example, a cash register in a supermarket or a computer used by various customer service personnel in a Call Center may be the aforementioned terminal device.

The known remote server can only provide the display processing of the display screen and the input device, so the remote server cannot make calls to various peripheral devices connected to the terminal device. Taking the RS-232 peripheral device as an example, in the case of this machine, the host can directly open, transmit, receive, stop or close the connected peripheral device through the RS-232 communication port. There is no physical RS-232 communication in the virtual machine. Therefore, once the virtual machine is running the application, the application does not detect the physical RS-232 communication, and the application will respond to the error message and terminate the operation of the entity's RS-232 communication.

Although the mapping process between the virtual machine and the terminal device can be performed, the virtual machine can detect the RS-232 peripheral device to which the terminal device is connected. When the terminal device is interrupted When connecting to a virtual machine, the virtual machine may still send operational instructions to the terminal device. Since the virtual machine is not connected to the terminal device, the virtual machine's application will fail to find the communication port.

Therefore, the information manager needs to set the communication port again. If the information management staff wants to set up multiple virtual machines at the same time, the information management personnel must consider the network deployment of the virtual machine in addition to the above problems. The configuration of these terminal devices is almost identical, and these terminal devices are connected to the virtual machines of the remote server. Therefore, in the process of deploying virtual machines in a large amount, it is a heavy burden for information managers.

In addition to the aforementioned missing errors in the connection, the virtual machine also has a problem of identifying peripheral devices connected to the terminal device. These problems also occur in other types of communication devices in the terminal device.

In view of the above problems, the present invention provides a remote peripheral control system. The remote server performs mapping processing with peripheral devices connected to the client, and is characterized by immediate data output or control of peripheral devices for input processing.

The remote peripheral control system disclosed by the present invention includes a client and a remote server. The client has multiple target communications, each of which is coupled to the peripheral device; the remote server generates at least one virtual communication port and cache space when the application is running; when the client and the remote server are not connected, the far The server stores the operation instructions sent by the application to the virtual communication port in the cache space; the remote server simulates the normal response action of the target communication port, and transmits the responses back to the application; when the client connects to the remote server The remote server maps the virtual communication port to the target communication port of the client, and the remote server transmits the operation instruction in the cache space to the client.

The remote peripheral control method of the present invention further comprises the steps of: generating at least one virtual communication port and buffer space when the remote server runs the application; waiting for the client to connect to the remote server; During the period when the server is not connected to the remote server, the application sends an operation command to the virtual communication port, and the remote server temporarily stores the operation instruction in the cache space; if the client connects to the remote server, the remote server will each A virtual communication port corresponds to the target communication of the client; if the client and the remote server are disconnected, the remote server The operation instruction is temporarily stored in the cache space; when the client is connected to the remote server again, the remote server maps the operation instruction temporarily stored in the cache space to the corresponding target communication port and the peripheral device through the virtual communication port.

The remote peripheral control method disclosed in the present invention includes the following steps: deploying multiple virtual machines in a remote server, and generating at least one virtual communication port and cache space when the virtual machine runs the application, and the application program is virtual communication埠 Send operation instructions; if the client and the virtual machine are not connected, the virtual machine temporarily stores the operation instructions in the cache space; if the client connects to the virtual machine, the virtual machine smashes the virtual communication with the client. The target communication is mapped, and the virtual machine transmits the operation command to the target communication port through the virtual communication.

The invention further discloses a remote server, which comprises a network transmission interface and a control unit; the network transmission interface is connected to at least one client; the control unit is connected to the network transmission interface; and the control unit runs at least one virtual machine, the virtual machine Each has multiple virtual communication ports and cache space, the virtual machine sends operation instructions to the virtual communication port; the client connects to the remote server, the control unit selects any virtual machine, and connects the virtual machine to the client, when the client When the terminal is connected to the remote server, the virtual machine maps the operation instruction to the client through the virtual communication port and transmits the operation instruction to the target communication port of the client. When the client interrupts the connection with the virtual machine, the virtual machine operates the instruction. Stored in the cache space.

The remote peripheral control system disclosed by the present invention includes a client and a remote server. The client has multiple target communication ports, each of which is coupled to the peripheral device; the remote server is connected to the client, and when the client is connected to the remote server, the remote server generates the cache space according to the confirmation information of the client. After at least one virtual communication, the remote server maps the operation command to the corresponding target communication device and the peripheral device through the virtual communication port; when the connection between the client and the remote server is interrupted, the remote server stores the operation instruction sent to the client terminal. The cache space, until the client connects to the remote server, the remote server transmits the operation instructions in the cache space to the client.

The remote peripheral control system and method and the remote server thereof provided by the present invention can recognize the peripheral devices connected to the terminal device, and can also ensure that the virtual machine does not access the peripheral devices during the disconnection period. An error will occur. The features and implementations of the present invention are described in detail below with reference to the drawings.

110‧‧‧Client

111‧‧‧Processing unit

112‧‧‧Network access unit

113‧‧‧Target Communication埠

114‧‧‧First storage unit

120‧‧‧Remote Server

121‧‧‧Control unit

122‧‧‧Second storage unit

123‧‧‧Network transmission interface

124, 513‧‧‧Virtual Communications埠

125, 512‧‧‧ cache space

126‧‧‧ mapping table

130‧‧‧ Peripherals

500‧‧‧Virtual Machine

510‧‧‧Virtual Control Unit

514‧‧‧Virtual second storage unit

515‧‧‧Virtual network transmission interface

710‧‧‧ cash register

721‧‧‧Barcode reader

722‧‧‧Printer

723‧‧‧ screen

724‧‧‧ card reader

725‧‧‧ cash box

731‧‧‧COM1 Communication埠

732‧‧‧LTP Communication埠

733‧‧‧Video Graphics Array Communication埠

734‧‧‧COM2 Communication埠

735‧‧‧USB communication埠

Figure 1 is a schematic diagram of the architecture of the present invention.

Figure 2 is a schematic diagram of the client architecture of the present invention.

Figure 3 is a schematic diagram of the architecture of the remote server of the present invention.

Figure 4 is a schematic diagram of the operational flow of the present invention.

Figure 5 is a schematic diagram of the architecture of another embodiment of the present invention.

Figure 6 is a schematic diagram of the operational flow of another embodiment of the present invention.

Figure 7A is a schematic diagram of the operation of the present invention.

Figure 7B is a schematic diagram of the operation of the present invention.

Figure 7C is a schematic diagram of the operation of the present invention.

Figure 7D is a schematic diagram of the operation of the present invention.

Figure 8 is a schematic diagram of the architecture of the remote server of the present invention.

Figure 9 is a schematic diagram of the operational flow of the present invention.

Figure 10 is a schematic diagram showing the architecture of another embodiment of the present invention.

Figure 11 is a schematic diagram of the operational flow of another embodiment of the present invention.

Figure 12 is a schematic diagram of the operational flow of this embodiment of the present invention.

Figure 13 is a schematic diagram of the architecture of the mapping table of the present invention.

Please refer to FIG. 1 , which is a schematic diagram of the architecture of the present invention. The remote peripheral control system of the present invention includes a client 110 and a remote server 120. The remote server 120 connects at least one client 110 over the network. The client 110 can be implemented by a compact computer, a personal computer, an embedded system, or a computing device having computing power and network connectivity. Client 110 may choose to connect peripheral devices 130 as needed.

Please refer to FIG. 2, which is a schematic diagram of the client architecture of the present invention. The client 110 of the present invention includes a processing unit 111, a network access unit 112, a plurality of target communication ports 113, and a first storage unit 114. The processing unit 111 is coupled to the network access unit 112, the first storage unit 114, and the target communication ports 113. The network access unit 112 is used to connect to the remote service. 120. The processing unit 111 transmits or receives a data packet from the remote server 120 via the network access unit 112. For example, the remote server 120 can transmit its operation screen to the client 110 through the network, and the client 110 receives the operation screen through the network access unit 112. The network access unit 112 is not limited to a wired or wireless connection. The first storage unit 114 is configured to store related programs of the client 110 during operation, such as an operation system (OS), a communication agent (Agent), or a network transmission processing program. The first storage unit 114 can be implemented by a flash memory or a read only memory (ROM) or a hard disk. In addition, the client 110 may be further connected to a display for drawing an operation screen from the operating system output by the remote server 120.

The type of the target communication port 113 is a Parallel Port or a Serial Port. The target communication port 113 is used to connect the peripheral device 130. The type of the peripheral device 130 may be, but not limited to, a Bar Code Reader, a Cash Box Drawer, a Card Reader, or a printer. The target communication port 113 can be the communication port of the client 110 itself, or the extended communication port of the client 110. For example, the client 110 can add an interface card having a plurality of serial ports (that is, the communication port of the present invention), and the added interface card can also be regarded as a target communication in the present invention. 113.

For the purposes of the present invention, the configuration of the Human Interface Device (HID) can be determined by the remote server 120 (or virtual machine, and the description of the virtual machine will be explained later). However, the HID is determined by the operating system (that is, the application layer), so the configuration settings of the HID are the same. In other words, the configuration of the HID will not change due to different machines. However, since the peripheral device 130 of the present invention needs to set the hardware layer, the peripheral device 130 and the HID of the present invention are different in the layer level of the configuration.

Please refer to FIG. 3, which is a schematic diagram of the architecture of the remote server of the present invention. The remote server 120 further includes: a control unit 121, a second storage unit 122, a network transmission interface 123, a virtual communication port 124, and a cache space 125. The control unit 121 is coupled to the second storage unit 122 and the network transmission interface 123. The second storage unit 122 can store the virtual machine in addition to The application can also store the application that the client 110 needs to run. The control unit 121 exchanges data with the connected client 110 through the network transmission interface 123. At least one virtual communication port 124 is configured in the remote server 120. In the present invention, it is possible to distinguish the target communication port 113 on the terminal device, and thus the communication port configured on the remote server 120 is defined as the virtual communication port 124. In addition, the virtual communication port 124 may also be the communication port of the entity in the remote server 120.

The cache space 125 can be implemented by a physical storage device (for example, a hard disk, a solid-state drive (SSD)), or can be completed by each remote server 120 according to a dynamic configuration. The capacity of the cache space 125 can be determined according to different usage conditions, so the capacity of the cache space 125 is not limited in the present invention. To clearly illustrate the specific architecture of the present invention, the cache space 125 is also represented in Figure 3 as a separate component. The cache space 125 is used to temporarily store the operation instructions sent to the peripheral device 130.

Please refer to FIG. 4, which is a schematic diagram of the operational flow of the present invention. The method for controlling the peripheral device 130 of the remote server 120 of the present invention includes the following steps: Step S410: When the remote server runs the application, generate at least one virtual communication port and the cache space; Step S420: Wait for the connection of the client to the far end End server; step S430: in the period when the client is not connected to the remote server, the application sends an operation instruction to the virtual communication, the remote server temporarily stores the operation instruction in the cache space; step S440: the client accesses the network The path is connected to the remote server, and the remote server confirms the type and quantity of the target communication port of the client; Step S441: If the client does not meet the condition, the remote server disconnects from the client; Step S442: If the client When the terminal meets the condition, the remote server communicates each virtual communication port with the target communication of the client; step S450: the remote server forwards the operation instruction to the client and the corresponding target communication port through the virtual communication; step S460 : determining whether the connection of the client is interrupted; step S461: if the client is connected to the remote server Remote server through a virtual communications 传送 transmitting the operation command to the target communication device and the connected peripheral device; step S462: if the client disconnects with the remote server, the remote server temporarily stores the operation instruction in the cache space; and step S470: when the client When the terminal is connected to the remote server again, the remote server maps the operation instructions temporarily stored in the cache space to the corresponding target communication port and the peripheral device through the virtual communication port.

First, after the remote server 120 is started, the remote server 120 can generate at least one virtual communication port 124 in advance. The timing of generating the virtual communication port 124 may be before the client 110 is connected to the remote server 120, or after the client 110 is connected to the remote server 120. The type and number of virtual communication ports 124 can be changed according to different environments. When the client 110 connects to the remote server 120 for the first time, the remote server 120 receives the connection request from the client 110. At least the type and number of target communication ports 113 are included in the connection requirements of the present invention. The remote server 120 determines whether the type and number of the virtual communication ports 124 meet the connection requirements of the client 110. When the type and quantity of the virtual communication port 124 of the remote server 120 meet the connection requirements, the remote server 120 maps the virtual communication port 124 to the target communication port 113 of the client 110. The definition of meeting the connection requirement is as follows: the type of virtual communication port 124 and the target communication port 113, and the number of virtual communication ports 124 is consistent with the number of target communication ports 113.

When the connection requirements of the client 110 are met, the remote server 120 will decide whether to accept the client 110 that is currently required to connect. If the connection request is not met, the remote server 120 will reject the connection request with the client 110. In other words, when the type of the target communication port 113 of the client 110 does not match the type of the virtual communication port 124, the remote server 120 will not provide the associated service to the client 110. If the type of the target communication port 113 of the client 110 conforms to the type of the virtual communication port 124, the remote server 120 further compares the number of each of the target communication ports 113 with the number of corresponding virtual communication ports 124.

If the number of target communication ports 113 of the client 110 is less than or equal to the number of virtual communication ports 124, the remote server 120 performs processing of connection and mapping to the client 110. After the remote server 120 confirms, the remote server 120 converts the operation instruction into a network packet, and transmits the network path packet to the client 110, and the client 110 converts the network packet into an operation instruction, and drives the operation instruction to drive the target. The communication port 113 and the peripheral device 130.

During the connection between the client 110 and the remote server 120, the connection between the client 110 and the remote server 120 may be interrupted due to reasons such as poor operation or network quality. In the event of a connection interruption, the remote server 120 can obtain an abnormal feedback response via the network transmission interface 123. When a connection interruption occurs between the remote server 120 and the client 110, the remote server 120 starts to retrieve an operation instruction, determines the type of the operation instruction, and determines whether it is necessary to perform a process of simulating the operation instruction response. The operation instructions described can be classified into a set type and an operation type. The setting type generally refers to an instruction to set the environment of the peripheral device. The purpose of the operation type is to control various peripheral devices. For example, the operation command of the set type is to open the communication port, set the baud rate, and the like. The operation instructions of the operation type are read, write or pause.

When the remote server 120 detects the disconnection, the remote server 120 processes the operation instructions. If the operation command belongs to the aforementioned setting type, the remote server 120 executes the operation command in an analog manner. For example, when the remote server 120 receives the communication port, the remote server 120 sends a response message to the application that the connection is successful. If the operation command is an operation type, the remote server 120 dumps the operation instruction into the cache space 125 so that the operation instruction is not directly transmitted to the virtual communication port 124. Therefore, the virtual communication port 124 does not map the operation instructions to the client 110. As a result, the virtual communication 124 is prevented from receiving the response of the client 110, which may cause an operational error. In addition, the client 110 may store the received operations in the associated memory during the disconnection. When the client 110 and the remote server 120 are connected again, the client 110 sequentially transfers the operations in the memory to the remote server 120.

Taking the RS-232 communication port as the target communication port 113 as an example, the application program will open, set, read, write, and end the RS-232 communication port and the connected peripheral device 130. When the virtual communication port 124 issues the operation command, the operation command does not reach the peripheral device 130 due to the network interruption. Therefore, the virtual communication 埠124 will not receive the relevant response. Therefore, the remote server 120 of the prior art has a problem of communication error after the operation is overdue. At the same time, the client 110 also temporarily stores the issued operation in the associated memory. After detecting the network connection interruption, the remote server 120 of the present invention temporarily stores the operation instruction into the buffer space 125. Remote server 120 detects that the client 110 is connected again, and the remote server 120 will sequentially send the operation instructions in the cache space 125 to the client 110 and the peripheral device 130. The client 110 also transmits operations in the memory to the remote server 120.

For example, when the remote server 120 is not connected to the client 110, the remote server 120 will begin running the application. The application will pre-open the RS-232 communication port. The remote server 120 stores the opened operational commands in the cache space 125. The remote server 120 will wait for the client 110 to connect. When the client 110 is again connected to the remote server 120, the remote server 120 fetches the operation instructions from the cache space 125 and transmits them to the client 110 via the virtual communication port 124.

In addition to the described embodiments, the present invention can further classify operational instructions and, after sorting, decide whether to directly respond or store in the cache space 125. Following the example described above, the open and close operational commands are fixed announcement operations. Therefore, the remote server 120 can respond to the application with the corresponding result. If it is an operation command that is set, written, or read, the result cannot be generated by simulation because of these operation instructions. Therefore, the remote server 120 stores the operation instructions in the cache space 125, and the temporary client 110 connects to the remote server 120.

In addition to the foregoing mapping process in which the remote server 120 can directly perform connection and communication with the client 110, the present invention can be applied to the communication port mapping process of the virtual machine 500. The services required by the plurality of clients 110 can be provided due to the computing power of the remote server 120. Therefore, multiple virtual machines 500 can be operated on the remote server 120, as shown in FIG. Each virtual machine 500 is configured with: a virtual control unit 510, a cache space 512, a virtual communication port 513, a virtual second storage unit 514, and a virtual network transmission interface 515. The virtual control unit 510 is connected to the cache space 512, the virtual communication port 513, the virtual second storage unit 514, and the virtual network transmission interface 515. The cache space 512, the virtual communication port 513, the virtual second storage unit 514, and the virtual network transmission interface 515 are respectively associated with the cache space 125 of the remote server 120, the virtual communication port 124, the second storage unit 122, and the network transmission interface. 123 plays the same role, so its function will not be repeated here.

For the client 110, the virtual machine 500 provides an operating environment for the associated operating system, so the virtual machine 500 can invoke the peripheral device 130 of the client 110. And each The configuration of a virtual machine 500 can be adjusted according to the actual situation. Please refer to FIG. 6, which is a schematic diagram of the operational flow of another embodiment of the present invention. This embodiment of the present invention includes the following steps: Step S610: deploying at least one virtual machine on the remote server; Step S620: generating at least one virtual communication port and cache space when the virtual machine runs the application, and the application is in virtual communication埠 sending an operation instruction; step S630: determining whether the client is connected to the remote server; step S640: if the client is not connected to the virtual machine, the virtual machine temporarily stores the operation instruction in the cache space; step S650: if the client When the terminal is connected to the virtual machine, the client connects to the remote server through the network, the remote server selects the virtual machine, and connects the selected virtual machine to the client; step S660: the virtual machine connects the virtual communication with the client The plurality of target communications of the terminal perform mapping processing, and the virtual machine transmits the operation command to the target communication port through the virtual communication; step S670: determining whether the connection of the client is interrupted; and step S680: if the client disconnects with the virtual machine , the virtual machine temporarily stores the operation instruction in the cache space; and step S690: when the client re When connected to the virtual machine, the virtual machine operating temporarily in the instruction buffer space is mapped through a virtual communications port corresponding to a target Port and peripheral devices.

At least one or more virtual machines 500 are deployed in the remote server 120. The deployment mode of the virtual machine 500 and its operating environment are determined according to the needs of the client 110. For example, the information manager can use the preset virtual machine 500 to perform batch copying, so that the rapid deployment of multiple virtual machines 500 can be performed in the remote server 120. The configuration device (for example, computing power, memory capacity, storage space, or network configuration) of each virtual machine 500 will be the same. Alternatively, each virtual machine 500 may be set by the information manager one by one.

At least one virtual communication port 513 and a cache space are set in the virtual machine 500. 512. The virtual communication port 513 of each virtual machine 500 is independent. In other words, the virtual communication ports 513 of different virtual machines 500 do not interfere with each other. For example, virtual machine A and virtual machine B are configured in remote server 120. The virtual machine A can be configured with RS-232 port, USB (Universal Serial Bus) and LPT (Line Print Terminal Port), and the virtual machine B is configured with RS-232 port and USB port. Since the two virtual machines A and B are independent of each other, the RS-232 ports configured by the two virtual machines A and B will not interact with each other during the transmission of the two virtual machines A and B. put one's oar in. Similarly, the cache space 512 of each virtual machine 500 in the remote server 120 is also independent.

The client 110 is connected to the remote server 120 via a network, and the remote server 120 can select the corresponding virtual machine 500 according to the manner described above. The remote server 120 determines whether the type and number of virtual communication ports 513 of the virtual machine 500 are consistent with the target communication port 113. When the remote server 120 confirms whether there are remaining virtual machines 500 and the virtual machine 500 is not configured to other clients 110, the remote server 120 will preferentially select the virtual machine 500 to the client 110 and perform virtualization. The mapping between the communication port 513 and the target communication port 113 is performed. If the remote server 120 does not find a suitable virtual machine 500, the remote server 120 queries the virtual machine 500 of the virtual communication device 513 for a type and number greater than the client 110.

If the aforementioned virtual machine 500 exists in the remote server 120, the remote server 120 also selects the virtual machine 500 that meets the condition. In addition to the foregoing determination conditions, the remote server 120 may also perform the screening judgment of the virtual machine 500 according to the following conditions, such as: connection time, network address (IP Address) or media access control address (Media Access Control Address) ). The remote server 120 can select the virtual machine 500 according to the connection order of the client 110, and connect the selected virtual machine 500 to the client 110.

The remote server 120 can confirm whether the client 110 is legitimate according to the connection request. In the legitimate client 110 referred to in the present invention, the type and number of the target communication ports 113 of the client 110 are the same as the type and number of the virtual communication ports 513. In addition to the aforementioned legal case, when the type of the target communication port 113 of the client 110 coincides with the virtual communication port 513, the number of the target communication port 113 can be regarded as legal if it is less than the virtual communication port 513.

The type and related settings of the peripheral device 130 to which the client 110 is connected may be recorded in advance in the virtual machine 500. When the client 110 is connected to the virtual machine 500, the virtual machine 500 The peripheral device 130 to which the client 110 is connected can be further determined according to the connection requirements. The virtual machine 500 maps the virtual communication port 513 to the target communication port 113 of the client 110 according to the connection request, and the virtual machine 500 transmits the operation command to the target communication port 113 through the virtual communication port 513.

The virtual machine 500 will immediately monitor the connection status to the client 110. When the virtual machine 500 detects an interrupted connection, the virtual machine 500 classifies the operation instructions. If the operation command belongs to the set type, the virtual machine 500 executes the operation command in an analog manner. For example, when the virtual machine 500 receives the communication port, the virtual machine 500 sends a response message to the application that the connection is successful.

When the client 110 interrupts the connection with the virtual machine 500, the virtual machine 500 immediately dumps the operation instructions to the cache space 512. Therefore, the operation command is not directly transmitted to the virtual communication port 513. When the client 110 is again connected to the virtual machine 500, the virtual machine 500 detects whether there is an operation instruction in the cache space 512. If there is an operation instruction in the cache space 512, the virtual machine 500 sequentially transmits the operation instructions in the cache space 512 to the client 110 and the corresponding peripheral device 130.

If the cash register 710 of the store is taken as an example, each cash register 710 can be regarded as the client 110 described in the present invention. The main functions of the cash register 710 are the confirmation of the goods, the settlement of the amount, and the transaction processing of the bank. Please refer to Figures 7A and 7B. Therefore, the cash register 710 is configured with a bar code reader 721, a printer 722, a screen 723, a card reader 724 and a cash box 725, and the peripheral device 130 can communicate via RS-232 communication, LTP communication or USB. Communication, etc. are connected. It is assumed that the barcode reader 721 and the card reader 724 are respectively connected to the COM1 communication port 731 and the COM2 communication port 734 (which is a general name of RS-232), the printer 722 is connected to the LTP communication port 732, and the cash box 725 is connected to USB communication port 735, the screen 723 is connected to the video graphics array communication 埠 733 (Video Graph Array, referred to as VGA). The cash register 710 can be connected to the remote server 120 via a local area network (LAN) or to the remote server 120 outside the domain via the Internet.

The information manager can pre-generate the virtual machine 500 in the remote server 120, and the number of virtual machines 500 can be determined based on the number of cash registers 710 in the store. The virtual machine 500 to which the client 110 is connected in FIG. 7A is indicated by a dashed box. In Figure 7B, the virtual machine 500 generates virtual communication at the same time when the application is running. 513.

In general, the number of virtual machines 500 can be equal to (or less than) the total number of cash registers 710. When the number of virtual machines 500 is equal to the number of cash registers 710, the remote server 120 can configure the virtual machines 500 and the cash register 710 one-to-one. After the configuration is completed, the virtual machine 500 performs a mapping process between the virtual communication port 513 and the target communication port 113 with the client 110. Corresponding connections between the virtual communication ports 513 and the target communication port 113 in Fig. 7C are indicated by broken lines. The client 110 can operate on the virtual machine 500, and the virtual machine 500 can also invoke the target communication port 113 and the peripheral device 130 through the virtual communication port 513.

The virtual machine 500 will immediately monitor whether the cash register 710 has been connected. The virtual machine 500 can determine the connection status to the cash register 710 through the network transmission interface 123 of the remote server 120. In general, the cash register 710 may be shut down outside of business hours. Therefore, in the non-business hours, the cash register 710 and the virtual machine 500 are not connected. Such a situation is also considered a case of network interruption for the present invention. If a cashout occurs at the cash register 710, the virtual machine 500 temporarily interprets the operational command in the cache space 512 as shown in FIG. 7D. When the cash register 710 is again connected to the virtual machine 500, the virtual machine 500 checks whether there is an operation command in the cache space 512. If there is an operation instruction in the cache space 512, the virtual machine 500 sequentially transmits the operation instruction of the buffer space 512 to the cash register 710. For multiple virtual machines 500 in the remote server 120, each virtual machine 500 is connected to a different cash register 710. The operation of each cash register 710 can be considered to be independent of each other.

In addition to the foregoing embodiments, the present invention can be implemented in the following manner. Please refer to Figure 8 for the composition of this implementation. This embodiment is composed of a remote server 120 and a client 110. The client 110 includes a processing unit 111, a network access unit 112, a plurality of target communication ports 113, and a first storage unit 114. The processing unit 111 is coupled to the network access unit 112, the first storage unit 114, and the target communication ports 113. The network access unit 112 is used to connect to the remote server 120. The processing unit 111 transmits or receives a data packet from the remote server 120 via the network access unit 112.

The remote server 120 includes a control unit 121, a second storage unit 122, a network transmission interface 123, a virtual communication port 124, and a cache space 125. The control unit 121 is coupled to the second storage unit 122 and the network transmission interface 123. The second storage unit 122 can store the virtual machine The application of the device 500 can also store the application running by the client 110. The control unit 121 exchanges data with the connected client 110 through the network transmission interface 123. At least one virtual communication port 124 is configured in the remote server 120.

Please refer to FIG. 9 , which is a schematic diagram of the operational flow of the present invention. The method for controlling the peripheral device of the remote server 120 of the present invention includes the following steps: Step S910: The remote server waits for the connection of the client; Step S920: The remote server generates at least one virtual communication according to the confirmation information of the client; Step S930: Mapping the virtual communication port to the plurality of target communication ports of the client; step S940: detecting whether the connection of the client is interrupted; and step S950: if the client connects with the remote server, the operation command of the remote server is passed The virtual communication is transmitted to the corresponding target communication port; step S960: if the client disconnects with the remote server, the remote server temporarily stores the operation instruction in the cache space; and step S970: when the client is connected to the remote again When the server is in the server, the remote server maps the operation instructions temporarily stored in the cache space to the corresponding target communication port and the peripheral device through the virtual communication port.

First, after the remote server 120 is started, the remote server 120 listens for the connection request of the client 110. After the remote server 120 receives the connection request from the client 110, the client 110 additionally sends a confirmation message to the remote server 120. When the client 110 connects to the remote server 120 for the first time, the remote server 120120 receives the confirmation information of the client 110. The client 110 generates corresponding confirmation information according to the interface card or the communication port of the interface.

The remote server 120 generates a virtual communication port 124 based on the confirmation information. The type and number of virtual communication ports 124 are consistent with the type and number of target communication ports 113. The remote server 120 converts the operational instructions into network packets and transmits the network packets to the client 110. The client 110 then converts the network packet into an operation command, and drives the target communication port 113 and the peripheral device 130.

During the connection between the client 110 and the remote server 120, the connection between the client 110 and the remote server 120 may be interrupted due to reasons such as poor operation or network quality. In the event of a disconnection, the remote server 120 can transmit through the network interface 123. Get a feedback response if the connection is abnormal. At the same time, the remote server 120 dumps the operation instructions into the cache space 125 so that the operation instructions are not directly communicated to the virtual communication port 124. Therefore, the virtual communication port 124 does not map the operation instruction to the client 110, and the virtual communication port 124 is prevented from receiving an response from the client 110, which may cause an operation error.

Taking RS-232 as the target communication port 113 as an example, the RS-232 communication port performs operation commands such as opening, reading, writing, and ending to the connected peripheral device 130. When the virtual communication port 124 issues the operation command, the peripheral device 130 does not have any response to the remote server 120 due to the network interruption. Therefore, the remote server 120 of the prior art has a problem of communication error after the operation is overdue. After detecting the network connection interruption, the remote server 120 of the present invention temporarily stores the operation instruction into the buffer space 125. When the remote server 120 detects that the client 110 is connected again, the remote server 120 will sequentially send the operation instructions in the cache space 125 to the client 110 and its peripheral devices 130.

In addition to the foregoing mapping process in which the remote server 120 can directly perform connection and communication with the client 110, the present invention can be applied to the communication port mapping process of the virtual machine 500. The services required by the plurality of clients 110 can be provided due to the computing power of the existing remote server 120. Therefore, the remote server 120 can simultaneously run multiple virtual machines 500, as shown in FIG.

For the client 110, the virtual machine 500 provides an operating environment for the associated operating system, so the virtual machine 500 can invoke the peripheral device 130 of the client 110. The configuration of each virtual machine 500 can be adjusted according to the actual situation. The virtual machine 500 of the present invention is configured with a virtual control unit 510, a cache space 512, a virtual communication port 513, a virtual second storage unit 514, and a virtual network transmission interface 515. The virtual control unit 510 is connected to the cache space 512, the virtual communication port 513, the virtual second storage unit 514, and the virtual network transmission interface 515.

Please refer to FIG. 11 , which is a schematic diagram of the operational flow of this embodiment of the present invention. This embodiment of the present invention includes the following steps: Step S1110: deploying at least one virtual machine on the remote server; Step S1120: The remote server waits for the connection of the client; Step S1130: The client connects to the remote through the network Server, the remote server selects the virtual machine and connects the selected virtual machine to the client; Step S1140: The selected virtual machine generates at least one virtual communication according to the confirmation information of the client. Step S1150: the virtual machine maps the virtual communication to the target communication of the client according to the confirmation information, and the virtual machine transmits the operation instruction through the virtual communication. To the target communication port; step S1150: detecting whether the connection of the client is interrupted; step S1170: if the client disconnects the virtual machine, the virtual machine temporarily stores the operation instruction in the cache space; and step S1180: when the client When the terminal is connected to the virtual machine again, the virtual machine maps the operation instruction temporarily stored in the cache space to the corresponding target communication port and the peripheral device through the virtual communication port.

First, at least one or more virtual machines 500 are deployed in the remote server 120. The number of deployments of the virtual machine 500 and its operating environment are determined according to the needs of the client 110. After the remote server 120 initials the virtual machines 500, the remote server 120 waits for the connection of the client 110. The client 110 connects to the remote server 120 through a network, and the remote server 120 can select the corresponding virtual machine 500 according to the confirmation information of the client 110. The type of confirmation information may be, but is not limited to, the connection time, the IP address, the Media Access Control Address, or the user account. The remote server 120 can select the virtual machine 500 according to the connection order of the client 110, and connect the selected virtual machine 500 to the client 110.

Next, the virtual machine 500 sets at least one virtual communication port 513 and the cache space 512 according to the confirmation information. The virtual machine 500 maps the virtual communication port 513 to the target communication port 113 of the client 110, and the virtual machine 500 transmits the operation command to the target communication port 113 via the virtual communication port 513. The virtual communication port 513 of each virtual machine 500 is independent. The virtual machine 500 will immediately monitor the connection status to the client 110. When the client 110 interrupts the connection with the virtual machine 500, the virtual machine 500 immediately dumps the operation instructions to the cache space 512. Therefore, the operation command is not directly transmitted to the virtual communication port 513. When the client 110 is again connected to the virtual machine 500, the virtual machine 500 detects whether there is an operation instruction in the cache space 512. If there is an operation instruction in the cache space 512, the virtual machine 500 will refer to the operation in the cache space 512. The sequence is sent to the client 110 and the corresponding peripheral device 130.

The present invention can further achieve the purpose of connecting a plurality of different clients 110 to the same virtual machine 500. Please refer to FIG. 12, which is a flowchart of operation of another embodiment of the present invention. The embodiment includes the following steps: Step S1210: The remote server records the confirmation information of the multiple clients and the connected virtual machine into the mapping table; Step S1220: The remote server waits for the connection of the client; Step S1230: The client When the terminal is connected to the remote server, the remote server searches for the presence of the client and the virtual machine in the mapping table. Step S1240: If there is no virtual machine in the mapping table, step S1130 is performed; step S1250: if there is virtual in the mapping table The machine determines whether the virtual machine is connected to other clients; step S1251: if the virtual machine is not connected to other clients, the client is connected to the virtual machine; and step S1252: if the virtual machine has other client connections Line, the remote server suspends the client's connection to the virtual machine.

A mapping table 126 is stored in the second storage unit 122. The mapping table 126 records the corresponding association of the virtual machine 500 with the plurality of clients 110. Please refer to FIG. In this implementation aspect, virtual machine 500 can be provided to different clients 110 for use at different time periods. Therefore, which client 110 the virtual machine 500 can be used in the mapping table 126 is recorded. When the remote server 120 is connected to the client 110, the remote server 120 determines the virtual machine 500 corresponding to the client 110. Next, the remote server 120 determines whether the virtual machine 500 has a connection with other clients 110. If the virtual machine 500 is currently connected to other clients 110, the remote server 120 may select to suspend the connection processing of the client 110 to the remote server 120 or to connect the client 110 to be connected to other clients. Connected virtual machine 500.

The remote peripheral control system and method and the remote server 120 of the present invention can recognize the peripheral device 130 to which the terminal device is connected, and can also ensure the virtual machine 500 for the peripheral device 130 during the disconnection. No errors will occur during the fetching process. this In addition, the information management personnel can set the virtual machine 500 environment configuration one by one when deploying the virtual machine 500. Moreover, the remote server 120 can automatically assign the virtual machine 500 to the connected client 110.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

Claims (13)

A remote peripheral control system, wherein the remote server performs mapping processing with a peripheral device connected to the client, and is characterized by immediate data output or control of peripheral devices for input processing, and the remote peripheral control system includes: a client End, having a plurality of target communication ports, each of the target communication ports being coupled to a peripheral device; and a remote server for generating at least one virtual communication port and a buffer space when running an application; wherein When the client is not connected to the remote server, an operation instruction sent by the remote server to the virtual communication port is stored in the cache space, and the client is connected to the remote server. The end server maps the virtual communication port to the target communication port of the client, and the remote server transmits the operation instruction in the cache space to the client. The control system of the remote periphery as described in claim 1, wherein the type of the target communication port is a Parallel Port or a Serial Port, and the type of the peripheral device is a barcode reading. Bar Code Reader, Cash Box Drawer, Card Reader, Human Interface Device, Printer or Screen. The remote peripheral control system according to claim 1, wherein the remote server classifies the operation instruction when the remote server is not connected to the client or the remote server disconnects the connection with the client The remote server simulates the operation instruction of the set type, and returns the simulation result of the operation instruction to the application, and the remote server stores the remaining operation instructions in the cache space. A method for controlling a remote peripheral device includes the following steps: when a remote server runs an application, generates at least one virtual communication port and a cache space; waits for a client to connect to the remote server; During the period when the client is not connected to the remote server, the application sends an operation instruction to the virtual communication, and the remote server temporarily stores the operation instruction in the cache space; if the client is connected When the remote server is reached, the remote server will each of the virtual channels Corresponding to a target communication port of a client; if the client disconnects from the remote server, the remote server temporarily stores the operation instruction in a cache space; and when the client is connected to the server again The remote server maps the operation command temporarily stored in the cache space to the corresponding target communication device and the peripheral device through the virtual communication port. The method for controlling a remote peripheral device according to claim 4, wherein before the step of establishing the virtual communication ports, the method further comprises: deploying at least one virtual machine in the remote server; and each of the virtual machines generates at least one virtual machine One of the virtual communications. The method for controlling a remote peripheral device according to claim 5, wherein the step of mapping the virtual communication ports further comprises: the remote server from the virtual communication port has more than or equal to the virtual number of the target communication port Selecting any one of the machines; the client and the remote server connect the selected virtual machine; and the remote server maps the virtual communication port to the target communication port. The method for controlling a remote peripheral device according to claim 4, wherein when the remote server is not connected to the client or the remote server disconnects the connection with the client, the remote server performs the operation instruction Classification, the remote server simulates the operation instruction of the set type, and sends the simulation result of the operation instruction to the application, and the remote server stores the remaining operation instructions in the cache space. A method for controlling a remote peripheral device, characterized by control processing when a virtual machine and a peripheral device are interrupted, the control method comprising the steps of: deploying a plurality of virtual machines in a remote server, the virtual machine running an application The program generates at least one virtual communication port and a cache space, and the application sends an operation instruction to the virtual communication port; if a client is not connected to the virtual machine, the virtual machine temporarily stores the operation command in a In the cache space; and if the client is connected to the virtual machine, the virtual machine maps the virtual communication port to the target communication port of the client, and the virtual machine transmits the virtual communication 传送 Transfer the operation command to the target communication port. The method for controlling a remote peripheral device according to claim 8, wherein the step of connecting the client further comprises: if the client is connected to the remote server for the first time, the remote server is connected according to different clients. In the order, the remote server selects any of the virtual machines that are not configured; and assigns the selected virtual machine to the client to be connected. The method for controlling a remote peripheral device according to claim 8, wherein the step of connecting the client further comprises: if the client connects to the remote server for the first time, the remote server is configured from the virtual The number of the virtual communication ports selected in the machine is greater than or equal to the virtual machine of the target communication ports; and the selected virtual machine is assigned to the client to be connected. A remote server includes: a network transmission interface connecting at least one client; and a control unit connected to the network transmission interface, the control unit running at least one virtual machine, the virtual machines having multiple a virtual communication port and a cache space, the virtual machine sends an operation command to the virtual communication port; wherein the client is connected to the remote server, the control unit selects any of the virtual machines, and the virtual machine The machine is connected to the client, and when the client is connected to the remote server, the virtual machine maps the operation instruction to the client through the virtual communication, and transmits the operation instruction to a target communication of the client. When the client disconnects the virtual machine, the virtual machine stores the operation instruction in the cache space. A remote peripheral control system is characterized in that the remote server performs mapping processing with a peripheral device connected to the client, and the remote peripheral control system includes: at least one client, each of the clients having multiple target communications每一, each of the target communication ports is coupled to a peripheral device; and a remote server is connected to the client, and when the client is connected to the remote server, the remote server is configured according to the client The confirmation information generates a cache space and at least one virtual communication port, and the remote server maps an operation command to the virtual communication port to The corresponding target communication port is connected to the peripheral device. The remote peripheral control system of claim 12, wherein when the connection between the client and the remote server is interrupted, the remote server stores the operation instruction sent to the client in the cache space until the client When connected to the remote server, the remote server transmits an operation instruction in the cache space to the client.