CA2996140A1 - Communications management - Google Patents
Communications management Download PDFInfo
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- CA2996140A1 CA2996140A1 CA2996140A CA2996140A CA2996140A1 CA 2996140 A1 CA2996140 A1 CA 2996140A1 CA 2996140 A CA2996140 A CA 2996140A CA 2996140 A CA2996140 A CA 2996140A CA 2996140 A1 CA2996140 A1 CA 2996140A1
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- peripheral manager
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5061—Partitioning or combining of resources
- G06F9/5077—Logical partitioning of resources; Management or configuration of virtualized resources
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer And Data Communications (AREA)
Abstract
The present invention relates to a system (300) and method for managing communication between a server (100') and peripheral devices (250, 260, 270, 280) associated with at least one client (200) deployed with an airport environment so that a virtualised application (130') running on the server (100') can be connected with at least one of the peripheral devices (250, 260, 270, 280). A communications link (310) is established between the server (100') and the client (200) associated with the peripheral devices (250, 260, 270, 280) and the application (130') is directed to one of the peripheral devices (250, 260, 270, 280) via a virtual channel (320) established between a server peripheral manager simulator component (160) and a client peripheral manager simulator component (245) and passing through the communications link (310). The client peripheral manager simulator (245) is associated with a peripheral manager (240) in the client (200) which controls the peripheral devices (250, 260, 270, 280).
Description
=
COMMUNICATIONS MANAGEMENT
Field of the Invention The present invention relates to communications management and is more particularly, although not exclusively, concerned with the management of communication between peripheral devices within a virtualised communications system for airports.
Background to the Invention In airport communication systems, a peripheral manager containing device drivers forms part of a client computer system which is geographically local to and is directly connected to one or more peripherals via a local communications system. Such a peripheral manager is constrained in establishing communications with central server-based applications due to the use of non-static internet protocol (IP) addresses and the requirement for IP address translation when the communication needs to traverse networks comprising a mix of public and private addressing schemes.
Within airport environments, workstations (including thin client devices, mobile/tablet devices) and peripheral devices may be shared for multiple airline usage. However, different airlines tend to utilise different systems and a problem arises where the same peripheral devices need to communicate with those different systems. One way of providing such communication requires the adaptation of existing client applications and print emulators to target remote hostnames in conjunction with addressing schemes based on fixed IP addresses.
.=
COMMUNICATIONS MANAGEMENT
Field of the Invention The present invention relates to communications management and is more particularly, although not exclusively, concerned with the management of communication between peripheral devices within a virtualised communications system for airports.
Background to the Invention In airport communication systems, a peripheral manager containing device drivers forms part of a client computer system which is geographically local to and is directly connected to one or more peripherals via a local communications system. Such a peripheral manager is constrained in establishing communications with central server-based applications due to the use of non-static internet protocol (IP) addresses and the requirement for IP address translation when the communication needs to traverse networks comprising a mix of public and private addressing schemes.
Within airport environments, workstations (including thin client devices, mobile/tablet devices) and peripheral devices may be shared for multiple airline usage. However, different airlines tend to utilise different systems and a problem arises where the same peripheral devices need to communicate with those different systems. One way of providing such communication requires the adaptation of existing client applications and print emulators to target remote hostnames in conjunction with addressing schemes based on fixed IP addresses.
.=
- 2 -However, this is problematic for a number of reasons, including: the limited availability of public IP addresses; the complexity associated with security, firewalls and mobile data modes where 3G and/or 4G networks are used; the need for many routing configurations that need to be 5 established and effectively managed; and the need to manage multiple stakeholders providing different elements of the communications, for example, airport authorities, network providers, airport information technology providers etc.
US-B-8032363 describes a bridged computer system in 10 which a. host computer executes peripheral driver software associated := with a remote client computer and communications between the host computer and the remote client is processed using peripheral emulation of an audio codec. Audio signals are communicated between the host and remote computer using network Interfaces provided in both the host 15 and the remote computer. In the .host computer, an audio interface is provided which connects to a communications network, and, in the remote computer, interfaces are provided for connecting to speakers and a microphone associated with the remote computer. In one embodiment, a peripheral emulator including an audio controller emulator and a coder ;
20 emulator Is provided in the host computer for connecting to the host computer network Interface, the peripheral emulator implementing =
transcoding functions, such as, compression of outbound audio data samples and/or decompression of inbound audio samples. At the remote computer, a link interface is provided which terminates audio links by 25 providing a physical Interface, bus transceiver logic and transport layer termination, the link interface transmitting output audio data and commands, receiving input audio data and responses, communicating codec control Information to codec modules, distributing a sample clock, = executing a power mode state machine, and providing bus reset and 30 initialisation functions. Registers associated with the link interface maintain the configuration states of the codec modules and these . WO 7014/118349 perEp2014/051969 =
US-B-8032363 describes a bridged computer system in 10 which a. host computer executes peripheral driver software associated := with a remote client computer and communications between the host computer and the remote client is processed using peripheral emulation of an audio codec. Audio signals are communicated between the host and remote computer using network Interfaces provided in both the host 15 and the remote computer. In the .host computer, an audio interface is provided which connects to a communications network, and, in the remote computer, interfaces are provided for connecting to speakers and a microphone associated with the remote computer. In one embodiment, a peripheral emulator including an audio controller emulator and a coder ;
20 emulator Is provided in the host computer for connecting to the host computer network Interface, the peripheral emulator implementing =
transcoding functions, such as, compression of outbound audio data samples and/or decompression of inbound audio samples. At the remote computer, a link interface is provided which terminates audio links by 25 providing a physical Interface, bus transceiver logic and transport layer termination, the link interface transmitting output audio data and commands, receiving input audio data and responses, communicating codec control Information to codec modules, distributing a sample clock, = executing a power mode state machine, and providing bus reset and 30 initialisation functions. Registers associated with the link interface maintain the configuration states of the codec modules and these . WO 7014/118349 perEp2014/051969 =
- 3 -registers are emulated at the host computer so that audio software On the host computer has rapid access to codec state information during driver initialisation or when the remote computer is disconnected. In another embodiment, a peripheral interface Including a peripheral emulator in the 5 host computer is connected to the network, and a peripheral controller is provided In the remote computer for controlling a peripheral. The peripheral emulator in this case interacts with the driver software to emulate the Interface of the peripheral. The,peripheral interface interacts =
through the network with the peripheral controller within the remote client 10 computer, the peripheral controller comprising a remote driver or other = software and/or hardware for coupling to the peripheral.
= However, whilst the system described in U5-13-8032353 uses peripheral emulation in a peripheral interface in the host computer, interfaces need to be provided on both sides of the communications 15 network to convert the audio signals into and from appropriate data signals for transmittal over the communications network. Whilst this can readily be implemented over a known communications network, it is dIffICUft to implement this over different types of networks where the communications network is not known, and more importantly, where 20 several different types of networks need to be negotiated in a single communications link.
In systems where a host computer is required to be in communication with a remote client computer, multiple addressing schemes and transEation across heterogeneous local and wide area 25 networks, Including mobile carrier networks, are required to enable communications between the host computer and the remote client computer. In this ease, it is difficult to establish a reliable link irrespective of the multiple addressing schemes and the different types of networks = required for the necessary communication.
i = = WQ 2014/113349 n..:I/ErZU14/US19b9
through the network with the peripheral controller within the remote client 10 computer, the peripheral controller comprising a remote driver or other = software and/or hardware for coupling to the peripheral.
= However, whilst the system described in U5-13-8032353 uses peripheral emulation in a peripheral interface in the host computer, interfaces need to be provided on both sides of the communications 15 network to convert the audio signals into and from appropriate data signals for transmittal over the communications network. Whilst this can readily be implemented over a known communications network, it is dIffICUft to implement this over different types of networks where the communications network is not known, and more importantly, where 20 several different types of networks need to be negotiated in a single communications link.
In systems where a host computer is required to be in communication with a remote client computer, multiple addressing schemes and transEation across heterogeneous local and wide area 25 networks, Including mobile carrier networks, are required to enable communications between the host computer and the remote client computer. In this ease, it is difficult to establish a reliable link irrespective of the multiple addressing schemes and the different types of networks = required for the necessary communication.
i = = WQ 2014/113349 n..:I/ErZU14/US19b9
-4-Summay of the Invention It is therefore an object of the present invention to provide a system and method for virtuallsing applications between a host computer and at least one remote client computer.
5 It is another object of the present invention to provide a method for managing the communication of peripheral devices deployed within an airport environment via a virtualised.communications protocol.
It is a further object of the present invention to enable virtuallsed applications running on a server to establish communications = 10 with client-based peripheral managers and their associated peripheral , devices.
In accordance with a first aspect of the present invention, =
there is provided a system for operating a peripheral device associated with a client from a server, the system comprising:-15 a server being configured for running at least one application;' at least one client being configured to be connected to the server via a communications link;
at least one peripheral device associated with each client;
20 and a peripheral manager associated with each client and being =
configured for controlling each associated peripheral device;
characterised in that the server comprises an application virtuallsation platform for virtualising at least one application running 25 thereon; and each client comprises a client virtualisation platform for interacting with the application vIrtualisation platform;
and in that the system further comprises at least one peripheral manager simulator configured to establish a virtual channel =
through which communication is enabled between at least one ;
30 application running on the server and at least one peripheral device associated with at least one client.
yyj h1/14/110.347 .1./EXhili4/u3lycly = Advantageously, the provision of the virtualisation platforms on the server and each client enables applications running on the server to interact with one or more clients at the same time via virtual channels established between each client and the server. This means that the 5 server can be located at any suitable location with the clients located at various remote locations with respect to the server.
In addition, by the establishment of effectively dedicated virtual channels between each client and the server, different applications on the server can be accessed by each client and connected to relevant 10 client-associated peripheral devices without having to compensate for different types of multiple addressing schemes and translation across heterogeneous local and wide area networks, including mobile carrier networks.
Each peripheral manager simulator preferably comprises at 15 least one client peripheral manager simulator component associated with each client and a server peripheral manager simulator component associated with the server, the virtual channel being established between the server peripheral manager simulator component .and the client peripheral manager simulator component.
20 In one embodiment, each server peripheral manager simulator component may be embedded in at least one application on the server. In another embodiment, each server peripheral manager may be connected to at least one application on the server.
Each application may further comprise a peripheral 25 emulator and each server peripheral manager simulator component connects with each application by way of the peripheral emulator.
The system may further comprise an interface provided between the peripheral emulator and the server peripheral manager simulator component. In one embodiment, the interface may comprise a 30 ,common use passenger processing system.
= WO
2014/115349 PC.1.7.E1'2014/U51YbY
It is a further object of the present invention to enable virtuallsed applications running on a server to establish communications = 10 with client-based peripheral managers and their associated peripheral , devices.
In accordance with a first aspect of the present invention, =
there is provided a system for operating a peripheral device associated with a client from a server, the system comprising:-15 a server being configured for running at least one application;' at least one client being configured to be connected to the server via a communications link;
at least one peripheral device associated with each client;
20 and a peripheral manager associated with each client and being =
configured for controlling each associated peripheral device;
characterised in that the server comprises an application virtuallsation platform for virtualising at least one application running 25 thereon; and each client comprises a client virtualisation platform for interacting with the application vIrtualisation platform;
and in that the system further comprises at least one peripheral manager simulator configured to establish a virtual channel =
through which communication is enabled between at least one ;
30 application running on the server and at least one peripheral device associated with at least one client.
yyj h1/14/110.347 .1./EXhili4/u3lycly = Advantageously, the provision of the virtualisation platforms on the server and each client enables applications running on the server to interact with one or more clients at the same time via virtual channels established between each client and the server. This means that the 5 server can be located at any suitable location with the clients located at various remote locations with respect to the server.
In addition, by the establishment of effectively dedicated virtual channels between each client and the server, different applications on the server can be accessed by each client and connected to relevant 10 client-associated peripheral devices without having to compensate for different types of multiple addressing schemes and translation across heterogeneous local and wide area networks, including mobile carrier networks.
Each peripheral manager simulator preferably comprises at 15 least one client peripheral manager simulator component associated with each client and a server peripheral manager simulator component associated with the server, the virtual channel being established between the server peripheral manager simulator component .and the client peripheral manager simulator component.
20 In one embodiment, each server peripheral manager simulator component may be embedded in at least one application on the server. In another embodiment, each server peripheral manager may be connected to at least one application on the server.
Each application may further comprise a peripheral 25 emulator and each server peripheral manager simulator component connects with each application by way of the peripheral emulator.
The system may further comprise an interface provided between the peripheral emulator and the server peripheral manager simulator component. In one embodiment, the interface may comprise a 30 ,common use passenger processing system.
= WO
2014/115349 PC.1.7.E1'2014/U51YbY
- 6 -In one embodiment, the peripheral emulator may comprise = a print emulator and at least one of the peripheral devices connected to at least one client comprises a printer.
The communication link may comprise at least a 30 or a 40 = 5 mobile telecommunications network.
In accordance with another aspect of the present invention, there is provided a method of connecting at least one application on a server to at least one peripheral device associated with at least one client connected to the server, the server having an application virtualisation 10 platform and each client having a client virtualisation platform, the method comprising the steps of:
a) establishing a communications link between the server and at least one client;
b) vidualising communication protocols associated with 15 each client and making the virtualised communications protocols available to the application virtuelisation platform on the server; and c) connecting at least one application on the server to at least one client using the client communication protocol;
characterised in that the method further comprises the steps 20 of:-d) establishing a virtual channel between a server peripheral manager simulator component and at feast one client peripheral manager simulator component within the communications link;
and 25 e) operating at least one peripheral device associated with at least one client using the established virtual channel between the server peripheral manager simulator component and each client peripheral manager simulator component.
By establishing the virtual channel within the = 30 communications link, a reliable connection can be provided between the =WQ Aulaittoso, ruf/E1"24114/M1YOY
The communication link may comprise at least a 30 or a 40 = 5 mobile telecommunications network.
In accordance with another aspect of the present invention, there is provided a method of connecting at least one application on a server to at least one peripheral device associated with at least one client connected to the server, the server having an application virtualisation 10 platform and each client having a client virtualisation platform, the method comprising the steps of:
a) establishing a communications link between the server and at least one client;
b) vidualising communication protocols associated with 15 each client and making the virtualised communications protocols available to the application virtuelisation platform on the server; and c) connecting at least one application on the server to at least one client using the client communication protocol;
characterised in that the method further comprises the steps 20 of:-d) establishing a virtual channel between a server peripheral manager simulator component and at feast one client peripheral manager simulator component within the communications link;
and 25 e) operating at least one peripheral device associated with at least one client using the established virtual channel between the server peripheral manager simulator component and each client peripheral manager simulator component.
By establishing the virtual channel within the = 30 communications link, a reliable connection can be provided between the =WQ Aulaittoso, ruf/E1"24114/M1YOY
-7 -server and each client irrespective of the type(s) of Communications network(s) at the locality of the client, = The method may further comprise the step of transferring data from at least one peripheral device connected to a client to the 5 server using the established virtual channel between the client peripheral manager Simulator component and the server peripheral manager simulator component.
= Brief Descrietion of the Drawinos 10 For a better understanding of the present invention, reference will now be made, by way of example only, to the accompanying drawings in which:-Figure 1 illustrates a block diagram of a server in accordance with the present invention;
15 Figure 2 is similar to Figure 1 but illustrates another configuration of the server in accordance with the present invention;
Figure 3 illustrates a block diagram of a client in accordance with the present invention;
Figure 4 illustrates a block diagram of a system in 20 accordance with the present invention utilising the server of Figure 2 and the client of Figure 3;
.=
Figure 5 illustrates a block diagram of a system in accordance with the present invention which comprises a server and a plurality of clients; and 26 Figure 6 is a flow chart illustrating the steps of operation of the system shown in Figure 4.
Description of the Invention The present invention will be described with respect to 30 particular embodiments and with reference to certain drawings but the invention is not limited thereto. The drawings described are only vVJ 4U.1.4/A10.1431 YIL Irrarzvialuz
= Brief Descrietion of the Drawinos 10 For a better understanding of the present invention, reference will now be made, by way of example only, to the accompanying drawings in which:-Figure 1 illustrates a block diagram of a server in accordance with the present invention;
15 Figure 2 is similar to Figure 1 but illustrates another configuration of the server in accordance with the present invention;
Figure 3 illustrates a block diagram of a client in accordance with the present invention;
Figure 4 illustrates a block diagram of a system in 20 accordance with the present invention utilising the server of Figure 2 and the client of Figure 3;
.=
Figure 5 illustrates a block diagram of a system in accordance with the present invention which comprises a server and a plurality of clients; and 26 Figure 6 is a flow chart illustrating the steps of operation of the system shown in Figure 4.
Description of the Invention The present invention will be described with respect to 30 particular embodiments and with reference to certain drawings but the invention is not limited thereto. The drawings described are only vVJ 4U.1.4/A10.1431 YIL Irrarzvialuz
- 8 -schematic and are non-limiting, In the drawings, The size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes.
The term "server' as used herein Is Intended to include any host computer that can connect to a communications network. In addition, the term "server" is also used to identify elements within the server.
The terms "remote client computer" or 'client" as used herein are intended to Include any computer or terminal that can connect to a server via a communications network. The term "client' is also used to identify elements within a remote client computer_ The term "emulator" as used herein refers to hardware or software that duplicates (emulates) the functions of a first computer system (for example, a client computer) in a second computer system (for example, a host computer) to provide an exact reproduction of the behaviour of the first computer system.
The term "simulator" as used herein refers to a hardware or software that provides a representation of the operation of a physical system over time using a model representing key characteristics and/or behaviours of the physical system.
The present invention is capable of exploitation by airports and any other parties that are involved in the provision a shared Infrastructure to users in airport environments, including but not limited to, use in check-in and boarding areas, baggage claim desks and airline back offices. In addition, the present invention can also be utilised in non-airport environments, =
This present invention provides a method for managing the =
communication with peripheral devices, such as printers, scanners and readers, deployed within an airport environment via a virtualised communications protocol extended over a network. Such a network may comprise of heterogeneous network types, including local area networks = WO 2014/118349 r. unrAu.114/IPZ1797
The term "server' as used herein Is Intended to include any host computer that can connect to a communications network. In addition, the term "server" is also used to identify elements within the server.
The terms "remote client computer" or 'client" as used herein are intended to Include any computer or terminal that can connect to a server via a communications network. The term "client' is also used to identify elements within a remote client computer_ The term "emulator" as used herein refers to hardware or software that duplicates (emulates) the functions of a first computer system (for example, a client computer) in a second computer system (for example, a host computer) to provide an exact reproduction of the behaviour of the first computer system.
The term "simulator" as used herein refers to a hardware or software that provides a representation of the operation of a physical system over time using a model representing key characteristics and/or behaviours of the physical system.
The present invention is capable of exploitation by airports and any other parties that are involved in the provision a shared Infrastructure to users in airport environments, including but not limited to, use in check-in and boarding areas, baggage claim desks and airline back offices. In addition, the present invention can also be utilised in non-airport environments, =
This present invention provides a method for managing the =
communication with peripheral devices, such as printers, scanners and readers, deployed within an airport environment via a virtualised communications protocol extended over a network. Such a network may comprise of heterogeneous network types, including local area networks = WO 2014/118349 r. unrAu.114/IPZ1797
- 9 -and wide area networks, the latter including fixed networks or 36/46 data communications networks. (36 relates to the third generation of mobile communications for mobile telephones and comprises COMA2000, a family of protocols that use code division multiple access systems, and 5 Universal Mobile Telecommunications System (MATS). CDMA is also known as International Mobile Telecommunications Multi-Carrier (IMT-MC). 40 relates to the fourth generation which provides mobile Ultra-broadband intemet access using, for example, Long Term Evolution (LTE).) =
= 10 In particular, a method will be described which overcomes the challenges associated with communication between a remote central =
server and peripheral devices associated with airport-based clients where the communication may include multiple addressing schemes and translation across heterogeneous local and wide area networks, including 15 mobile carrier networks. As mentioned above, the present invention can be implemented in any system in which communication is to be established where multiple addressing schemes are needed between a remote central server and a local client and associated peripheral devices.
20 In the system of the present invention, a server is in =
cOmmunication with at least one remote client computer. A peripheral manager simulator simulates a peripheral manager on the server to communicate with a client peripheral manager in each remote client computer. The peripheral manager simulator preferably comprises a .
25 server peripheral manager simulator component and a client peripheral manager simulator component between which the virtual channel Is = established, The server peripheral manager simulator component and the client peripheral manager simulator component work together to simulate application communication from the server to each remote client 30 computer so that the peripheral manager associated with each remote =
=
client computer can control the operation of its associated peripheral =
. = - 10 -devices. Additionally, the virtual channel. can also be used for data transfer between a peripheral device connected to the client end the server. In effect, the virtual channel is bi-directional_ Referring initially to Figure 1, a server 100 in accordance 5 with the present invention is shown which has a server-based application virtualisation platform 110. A plurality of applications 120, 130, 140 are shown running on the server 100 but which are virtualised on the application virtualisation platform 110. An emulator 160, for example, a = print emulator, is associated with one particular application 1301 for
= 10 In particular, a method will be described which overcomes the challenges associated with communication between a remote central =
server and peripheral devices associated with airport-based clients where the communication may include multiple addressing schemes and translation across heterogeneous local and wide area networks, including 15 mobile carrier networks. As mentioned above, the present invention can be implemented in any system in which communication is to be established where multiple addressing schemes are needed between a remote central server and a local client and associated peripheral devices.
20 In the system of the present invention, a server is in =
cOmmunication with at least one remote client computer. A peripheral manager simulator simulates a peripheral manager on the server to communicate with a client peripheral manager in each remote client computer. The peripheral manager simulator preferably comprises a .
25 server peripheral manager simulator component and a client peripheral manager simulator component between which the virtual channel Is = established, The server peripheral manager simulator component and the client peripheral manager simulator component work together to simulate application communication from the server to each remote client 30 computer so that the peripheral manager associated with each remote =
=
client computer can control the operation of its associated peripheral =
. = - 10 -devices. Additionally, the virtual channel. can also be used for data transfer between a peripheral device connected to the client end the server. In effect, the virtual channel is bi-directional_ Referring initially to Figure 1, a server 100 in accordance 5 with the present invention is shown which has a server-based application virtualisation platform 110. A plurality of applications 120, 130, 140 are shown running on the server 100 but which are virtualised on the application virtualisation platform 110. An emulator 160, for example, a = print emulator, is associated with one particular application 1301 for
10 example, a print application. The application 130 interfaces with the print emulator 150 via connection 135 . to provide print Instructions for a = peripheral device, for example, a printer (not shown) located at the location of the client.
In accordance with the present invention, a server 15 peripheral manager simulator component 160 is provided at the server = 100, the server peripheral manager simulator component 160 interfacing with the print emulator 160 via connection 155, The operation of the server 100 within the system of the present invention will be described in more detail with reference to Figures 4 to 6 below.
20 The application virtualisation platform 110 includes software which virtualises the applications 120, 130, 140 or an operation system = (not shown) on which each application runs. The server peripheral = manager simulator component 160 simulates a peripheral manager (as will be described in more detail below) to enable local communications 26 with the application emulator 150, in this case, the print emulator_ A
.=
Common Use Passenger Processing System (CUPPS) or any other suitable interface type may be provided which enables communication between the print emulator and the server peripheral manager simulator component 160. (CUPPS is effectively the next generation of Common 30 Use Terminal Equipment (CUTE) in accordance with lATA
Recommended Practice 1797.) J.E.I'd1J14/1.131YOY
In accordance with the present invention, a server 15 peripheral manager simulator component 160 is provided at the server = 100, the server peripheral manager simulator component 160 interfacing with the print emulator 160 via connection 155, The operation of the server 100 within the system of the present invention will be described in more detail with reference to Figures 4 to 6 below.
20 The application virtualisation platform 110 includes software which virtualises the applications 120, 130, 140 or an operation system = (not shown) on which each application runs. The server peripheral = manager simulator component 160 simulates a peripheral manager (as will be described in more detail below) to enable local communications 26 with the application emulator 150, in this case, the print emulator_ A
.=
Common Use Passenger Processing System (CUPPS) or any other suitable interface type may be provided which enables communication between the print emulator and the server peripheral manager simulator component 160. (CUPPS is effectively the next generation of Common 30 Use Terminal Equipment (CUTE) in accordance with lATA
Recommended Practice 1797.) J.E.I'd1J14/1.131YOY
11 -In the embodiment of the server 100 Shown in Figure 1, the application emulator 150 (or print emulator) is located within the application virtualisation platform 110. It may be connected to more than one application (not shown) if similar or identical applications are running on the server 100 and which require the same type of application emulation.
in Figure 2, a modified embodiment of the server 100' is shown. Elements which have been described above with reference to Figure 1 have the same reference numerals and will not be described in detail again. In the embodiment of Figure 2, the application virtualisation platform 110' has been modified so that the print emulator 150' forms part of the application 130' itself and interfaces , with the server peripheral manager simulator component 160 via connection 155'. In this case, a suitable interface is provided to enable communications between the print (or application) emulator 150' and the server peripheral manager simulator component 160.
In a further embodiment (not shown), the server peripheral manager simulator component may be embedded in the application itself.
In an airport implementation, the server 100 (or 100') is located remotely from the airport itself and is connected thereto by means of conventional communications links. A single server 100 (or 100') may be connected to more than one airport 83 well as to different areas, for exaMple, check-in, boarding gates, baggage halls and other airport front and/or back offices.
Figure 3 illustrates a client 200 which is connectable to the server 100 (Figure 1) or server 100' (Figure 2) as will be described in more detail below with reference to Figures 4 to 6. The client 200 has a client virtualisation platform 210 which interfaces with a keyboard 220 and a display 230 as shown by respective links 225, 235. Although the keyboard 220 and display 230 are shown as separate elements, they may form part of a single module (not shown). The client 200 also =
= WO
2014/118319 ri211.EX2U14/U31YbY
in Figure 2, a modified embodiment of the server 100' is shown. Elements which have been described above with reference to Figure 1 have the same reference numerals and will not be described in detail again. In the embodiment of Figure 2, the application virtualisation platform 110' has been modified so that the print emulator 150' forms part of the application 130' itself and interfaces , with the server peripheral manager simulator component 160 via connection 155'. In this case, a suitable interface is provided to enable communications between the print (or application) emulator 150' and the server peripheral manager simulator component 160.
In a further embodiment (not shown), the server peripheral manager simulator component may be embedded in the application itself.
In an airport implementation, the server 100 (or 100') is located remotely from the airport itself and is connected thereto by means of conventional communications links. A single server 100 (or 100') may be connected to more than one airport 83 well as to different areas, for exaMple, check-in, boarding gates, baggage halls and other airport front and/or back offices.
Figure 3 illustrates a client 200 which is connectable to the server 100 (Figure 1) or server 100' (Figure 2) as will be described in more detail below with reference to Figures 4 to 6. The client 200 has a client virtualisation platform 210 which interfaces with a keyboard 220 and a display 230 as shown by respective links 225, 235. Although the keyboard 220 and display 230 are shown as separate elements, they may form part of a single module (not shown). The client 200 also =
= WO
2014/118319 ri211.EX2U14/U31YbY
- 12 -includes a peripheral manager 240 which Is connected for controlling peripheral devices 250, 260. 270, 280 via link 290. Typical peripheral devices which may be controlled by the peripheral manager 240 include, but are not limited to, printers, scanners, and readers. Whilst link 290 5 may be a physical link, for example, using a universal serial bus (USB) =
connection, the link 290 may also be a wireless link forming part of a local area network (LAN) or a wide area network (WAN). .It is also possible that the link 290 operates using mobile telecommunications, for example, = forming Dart of a 3G or 4G network or is connected via Bluetooth.
10 (Bluetooth is a wireless technology standard managed by the Bluetooth Special Interest Group.) In accordance with the present invention, a client peripheral manager simulator component 245 is provided which is associated with the client peripheral manager 240_ The client peripheral manager 16 simulator component 246 is used to form a virtual channel (not shown) with the server peripheral manager simulator component 160 (Figures 1 and 2) as will be described in more detail below.
In an airport environment, a plurality of clients 200 would be provided within the airport itself, for example, at check-in desks, at 20 boarding gates, in baggage halls etc. Each client 200 connects to the remote server 100 (or 100') to access applications running on the = application virtualisation platform 110 (or 110') provided in the server (or 100') as will be described in more detail below.
In Figure 4, a virtualisation system 300 in accordance with 25 the present invention is shown. The system 300 comprises the server 100' as shown in Figure 2, but it will be appreciated that this is by way of example and the server 100 shown in Figure 1 could also be used.
Elements of the server 100' as described above have the same reference numerals and will not be described in detail again here. The system 300 30 also includes the client 200 which is connected to the server 100' via a communications link 310. Communications link 310 may GmPrise a =
. -13 -WAN or a LAN communications System which is capable of running a =
virtualisation protocol. As shown, the communications link 310 effectively connects the application virtualisation platform 110' to the client virtualisation platform 210. In particular, the communications link 310 5 comprises an Internet protocol (IP) connection. In one embodiment, the virtualisation protocol utilises Citrix XenServer on the server and Cltrix XenApp on each remote client computer to provide the respective virtualisation platforms. (Citrix, XenServer and XenApp are trademarks of Citrix Systems Inc. of Fort Lauderdale, Florida, USA) However, it will be 10 appreciated that other virtualisation protocols may be used, for example, VMWare, and Citrix applications are given by way of example. (VMWare = is a trademark of VMWare Inc. of Palo Alto, California, USA.) In addition, in accordance with the present invention, the communications link 310 effectively connects the server peripheral 15 manager simulator component 160 with the client peripheral manager simulator component 245 forming part of the client peripheral manager 240 using a virtual channel 320 as indicated by dot-dash line as will be described in more detail below.
The client virtualisation platform 210 includes software 20 which allows communications with the server 100 via the application virtualisatlon platform 110' and manages the delivery of the virtualised application or operating system to the peripheral manager 244 at the client 200. The peripheral manager 240 includes suitable device drivers (not shown) for each peripheral device 250, 260, 270, 280.
25 The client peripheral simulator component 245 enables communication between the client virtualisation platform 210 and the peripheral manager 240. As shown, the client peripheral manager simulator component 245 can be embedded within the peripheral manager 240. Alternatively, the client peripheral manager simulator 30 component 245 may stand alone within the client 200 (not shown).
=
WI) 2014/110:349 PL'I'MY2914/051969 =
In accordance with the present invention, the provision of the server peripheral manager simulator component 160 and the client peripheral manager simulator component 245 enables the virtualisation of the system as will be described below with reference to Figure 6_ Although not shown in Figure 4, It is to be noted that the virtual channel 320 extends through the communications link 310 via the application virtualisation platform 110* and the client virtualisation platform 210.
Figure 5 illustrates a system 400 in which a plurality of clients 2001, 2002, 2003, 2004, ..., 200õ are connected to a single server 100. Each client 2001, 2002, 2003, 2004, ..., 200, has its own client virtualisation platform 2101, 2102, 2103, 2104, ..., 210,, and own client peripheral manager and client peripheral manager simulator component.
For clarity, only the client peripheral manager 2401 and client peripheral manager simulator component 2451 for one client 2001 is referenced, but it will be appreciated that the other clients also have client peripheral manager and client peripheral manager simulator components as shown.
The server 100 may be located at a central remote location and each client 2001, 2002, 2003, 2004, 200, may be located at any suitable location. For example, clients may be located at one airport or at a plurality of different airports all over the globe. As described above, the clients could also be located at locations, for example, at hotels or conference centres, where passengers can check-in prior to leaving for the airport.
As shown, a communications link 410 may be established between each of the clients 2001, 2002, 2003, 2004, ..., 200õ at the same time. A virtual channel 420 is also shown extending between the client peripheral manager simulator component 2451 and the server peripheral manager simulator component 160. Although not shown in Figure 5, it is to be noted that the virtual channel 420 extends through the communications link 410 via the application virtualisation platform 110 and the client virtualisation platform 210.
= =
WV At14/11W4Y
reaterenaersieee Naturally, a virtual channel can also be established for the other client peripheral manager simulator components of each client 2001, 2002, 2003,, 2004, ..., 200. Each client 2001, 2002, 2003, 2004,....
200n may access the same application at the same time, or alternatively, mere than one application may be accessed by the same or different clients. It will be appreciated that each client 2001, 2002, 2003, 2004, 200n accesses the server 100 via its own dedicated virtual channel within the communications link 410, that is, a plurality of virtual channels can be established between the server peripheral manager simulator 160 and each client 2001, 2002, 2003, 2004, ..., 200n via the link 410.
By hosting all applications to be used by the clients on a common server, updates need only be applied once on the server without recourse to any of the clients. This reduces the complexity of keeping individual clients running the same application(s) up-to-date. In addition, as different applications can be hosted, in an airport environment, different airlines or other users of the system can use different applications but still use the same remote client computer to access their applications on the server.
In Figure 6, a flow chart 500 Illustrating the basic steps of a method for operating the system is shown. Reference numerals relating to elements of the server 100 (Figure 2), the client 200 (Figure 3) and the system 300 (Figure 4) are also used In the following description. The flow chart 500 comprises four basic steps in addition to "start", step 510, and "end", step 560.
In step 510, a user logs onto the client using the keyboard 220 and the display 230 and initiates a session In which the client 200 is connected to the server 100' via communications link 310 (Figure 4). The connection between the client and the server initialises at least one graphic user interface (GUI) for one of more applications on the server 100' by calling the IP address of the server 100'. At the same time, the server peripheral simulator component 160 is also initialised.
VT .10.'141 ............................................... Kt,. A114"
All A*1110.1.)9JIY
=
In step 620, the connection 310 is made between the client virtualisation platform 210 and the application virtualisation platform 110' on the server 100. A connection is established for the session via the virtualisation protocol according to the platform used, for example, using Citrix as described above, provided on the two platforms 110', 210 in step 530. Support for virtual channels within this protocol enables communications with peripherals to be reliably established and which are unaffected by network address translation and blocking due to the Presence of firewalls.
In step 540, the client looalhost/Transmission Control Protocol (TCP) is virtualised on the client virtualisation platform 210 and made available, via the connection 310 established in step 530, to the application 130' running on the virtualised platform 110' on the server 100'. in step 550, the virtual channel 320 is established between the 1.5 initialised server peripheral manager simulator component 160 and the client peripheral manager simulator component 245. The application 130' connects to the client localhost/TCP made available on the application virtualisation platform 110' in step 540, is virtualised and redirected via the virtual channel 320 back to the client peripheral manager. 240 via the client peripheral manager simulator component 245.
Once the virtual channel 320 is established, all communication between the application 130' and the peripheral device With which it is to communicate is performed via the virtual channel 320, that is, all data is transferred over the virtual channel 320, either from the server 100' to the client 200 or from the client 200 to the server 100'.
The virtual channel 320 can be established regardless of the type(s) of communications network(s) operating within the communications link 310 and effectively provides a channel of direct communication between the application 130 running on the application virtualisation platform 110' and one of the peripheral devices 250, 260, 270, 280 connected to the client 200 via link 290. As described above, VT', 4,1114/110.7.1), ru f rarL
1.111.12,1Y07 the application 130' may be a print application and the peripheral device connected to the client 200 may be a printer.
Naturally, other functionality may be provided by the peripheral devices, for example, scanning or reading. In thlS Case, the scan or read is passed back from the relevant peripheral device 250,260, 270, 280 via link 200 to the server peripheral manager simulator component 160, via the associated client peripheral manager 240, the client peripheral manager simulator component 245 and the virtual channel 320. From the server peripheral manager simulator component 160, the scan or read Is passed to an associated application within the application virtualisation platform 110'. The information relating to the scan or read may then be stored in a database or memory (not shown) if required_ In step 560, the session ends when the connection between the server 100' and the client 200 is terminated when the user logs off the client 200.
As described above, the server peripheral manager simulator component is launched each time the virtualised application is launched, that is, every time a client connects to the server. However, it is also possible to have a single server peripheral manager simulator component which provides a connection port for each instance of the virtualisecl application being launched on the server in response to the connection of a client with the server. The latter option is not preferred as all connections between clients and the server will be lost if the server peripheral manager simulator needs to be restarted for whatever reason.
A peripheral emulator is described above which is associated with the application on the server which needs to connect to a peripheral device on the client. However, this is not essential and its functionality can be included in the server peripheral manager simulator corn ponent.
Although the present invention has been described with reference to an airport environment in which airport-related applications are run with each client corresponding to a check-in terminal, for example, connected to a single server, it will be appreciated that the present Invention can also be used in non-airport environments irrespective of worldwide location, for example, Cruise liner terminals.
ferry terminals, hotels, resorts and conference centres, that is, any application where multiple clients need to establish a connection with a server to access the same application over a communications link having multiple addressing schemes and translation across heterogeneous local and wide area networks, including mobile carrier networks, to enable communications between applications running on the server and peripheral devices associated with the clients_
connection, the link 290 may also be a wireless link forming part of a local area network (LAN) or a wide area network (WAN). .It is also possible that the link 290 operates using mobile telecommunications, for example, = forming Dart of a 3G or 4G network or is connected via Bluetooth.
10 (Bluetooth is a wireless technology standard managed by the Bluetooth Special Interest Group.) In accordance with the present invention, a client peripheral manager simulator component 245 is provided which is associated with the client peripheral manager 240_ The client peripheral manager 16 simulator component 246 is used to form a virtual channel (not shown) with the server peripheral manager simulator component 160 (Figures 1 and 2) as will be described in more detail below.
In an airport environment, a plurality of clients 200 would be provided within the airport itself, for example, at check-in desks, at 20 boarding gates, in baggage halls etc. Each client 200 connects to the remote server 100 (or 100') to access applications running on the = application virtualisation platform 110 (or 110') provided in the server (or 100') as will be described in more detail below.
In Figure 4, a virtualisation system 300 in accordance with 25 the present invention is shown. The system 300 comprises the server 100' as shown in Figure 2, but it will be appreciated that this is by way of example and the server 100 shown in Figure 1 could also be used.
Elements of the server 100' as described above have the same reference numerals and will not be described in detail again here. The system 300 30 also includes the client 200 which is connected to the server 100' via a communications link 310. Communications link 310 may GmPrise a =
. -13 -WAN or a LAN communications System which is capable of running a =
virtualisation protocol. As shown, the communications link 310 effectively connects the application virtualisation platform 110' to the client virtualisation platform 210. In particular, the communications link 310 5 comprises an Internet protocol (IP) connection. In one embodiment, the virtualisation protocol utilises Citrix XenServer on the server and Cltrix XenApp on each remote client computer to provide the respective virtualisation platforms. (Citrix, XenServer and XenApp are trademarks of Citrix Systems Inc. of Fort Lauderdale, Florida, USA) However, it will be 10 appreciated that other virtualisation protocols may be used, for example, VMWare, and Citrix applications are given by way of example. (VMWare = is a trademark of VMWare Inc. of Palo Alto, California, USA.) In addition, in accordance with the present invention, the communications link 310 effectively connects the server peripheral 15 manager simulator component 160 with the client peripheral manager simulator component 245 forming part of the client peripheral manager 240 using a virtual channel 320 as indicated by dot-dash line as will be described in more detail below.
The client virtualisation platform 210 includes software 20 which allows communications with the server 100 via the application virtualisatlon platform 110' and manages the delivery of the virtualised application or operating system to the peripheral manager 244 at the client 200. The peripheral manager 240 includes suitable device drivers (not shown) for each peripheral device 250, 260, 270, 280.
25 The client peripheral simulator component 245 enables communication between the client virtualisation platform 210 and the peripheral manager 240. As shown, the client peripheral manager simulator component 245 can be embedded within the peripheral manager 240. Alternatively, the client peripheral manager simulator 30 component 245 may stand alone within the client 200 (not shown).
=
WI) 2014/110:349 PL'I'MY2914/051969 =
In accordance with the present invention, the provision of the server peripheral manager simulator component 160 and the client peripheral manager simulator component 245 enables the virtualisation of the system as will be described below with reference to Figure 6_ Although not shown in Figure 4, It is to be noted that the virtual channel 320 extends through the communications link 310 via the application virtualisation platform 110* and the client virtualisation platform 210.
Figure 5 illustrates a system 400 in which a plurality of clients 2001, 2002, 2003, 2004, ..., 200õ are connected to a single server 100. Each client 2001, 2002, 2003, 2004, ..., 200, has its own client virtualisation platform 2101, 2102, 2103, 2104, ..., 210,, and own client peripheral manager and client peripheral manager simulator component.
For clarity, only the client peripheral manager 2401 and client peripheral manager simulator component 2451 for one client 2001 is referenced, but it will be appreciated that the other clients also have client peripheral manager and client peripheral manager simulator components as shown.
The server 100 may be located at a central remote location and each client 2001, 2002, 2003, 2004, 200, may be located at any suitable location. For example, clients may be located at one airport or at a plurality of different airports all over the globe. As described above, the clients could also be located at locations, for example, at hotels or conference centres, where passengers can check-in prior to leaving for the airport.
As shown, a communications link 410 may be established between each of the clients 2001, 2002, 2003, 2004, ..., 200õ at the same time. A virtual channel 420 is also shown extending between the client peripheral manager simulator component 2451 and the server peripheral manager simulator component 160. Although not shown in Figure 5, it is to be noted that the virtual channel 420 extends through the communications link 410 via the application virtualisation platform 110 and the client virtualisation platform 210.
= =
WV At14/11W4Y
reaterenaersieee Naturally, a virtual channel can also be established for the other client peripheral manager simulator components of each client 2001, 2002, 2003,, 2004, ..., 200. Each client 2001, 2002, 2003, 2004,....
200n may access the same application at the same time, or alternatively, mere than one application may be accessed by the same or different clients. It will be appreciated that each client 2001, 2002, 2003, 2004, 200n accesses the server 100 via its own dedicated virtual channel within the communications link 410, that is, a plurality of virtual channels can be established between the server peripheral manager simulator 160 and each client 2001, 2002, 2003, 2004, ..., 200n via the link 410.
By hosting all applications to be used by the clients on a common server, updates need only be applied once on the server without recourse to any of the clients. This reduces the complexity of keeping individual clients running the same application(s) up-to-date. In addition, as different applications can be hosted, in an airport environment, different airlines or other users of the system can use different applications but still use the same remote client computer to access their applications on the server.
In Figure 6, a flow chart 500 Illustrating the basic steps of a method for operating the system is shown. Reference numerals relating to elements of the server 100 (Figure 2), the client 200 (Figure 3) and the system 300 (Figure 4) are also used In the following description. The flow chart 500 comprises four basic steps in addition to "start", step 510, and "end", step 560.
In step 510, a user logs onto the client using the keyboard 220 and the display 230 and initiates a session In which the client 200 is connected to the server 100' via communications link 310 (Figure 4). The connection between the client and the server initialises at least one graphic user interface (GUI) for one of more applications on the server 100' by calling the IP address of the server 100'. At the same time, the server peripheral simulator component 160 is also initialised.
VT .10.'141 ............................................... Kt,. A114"
All A*1110.1.)9JIY
=
In step 620, the connection 310 is made between the client virtualisation platform 210 and the application virtualisation platform 110' on the server 100. A connection is established for the session via the virtualisation protocol according to the platform used, for example, using Citrix as described above, provided on the two platforms 110', 210 in step 530. Support for virtual channels within this protocol enables communications with peripherals to be reliably established and which are unaffected by network address translation and blocking due to the Presence of firewalls.
In step 540, the client looalhost/Transmission Control Protocol (TCP) is virtualised on the client virtualisation platform 210 and made available, via the connection 310 established in step 530, to the application 130' running on the virtualised platform 110' on the server 100'. in step 550, the virtual channel 320 is established between the 1.5 initialised server peripheral manager simulator component 160 and the client peripheral manager simulator component 245. The application 130' connects to the client localhost/TCP made available on the application virtualisation platform 110' in step 540, is virtualised and redirected via the virtual channel 320 back to the client peripheral manager. 240 via the client peripheral manager simulator component 245.
Once the virtual channel 320 is established, all communication between the application 130' and the peripheral device With which it is to communicate is performed via the virtual channel 320, that is, all data is transferred over the virtual channel 320, either from the server 100' to the client 200 or from the client 200 to the server 100'.
The virtual channel 320 can be established regardless of the type(s) of communications network(s) operating within the communications link 310 and effectively provides a channel of direct communication between the application 130 running on the application virtualisation platform 110' and one of the peripheral devices 250, 260, 270, 280 connected to the client 200 via link 290. As described above, VT', 4,1114/110.7.1), ru f rarL
1.111.12,1Y07 the application 130' may be a print application and the peripheral device connected to the client 200 may be a printer.
Naturally, other functionality may be provided by the peripheral devices, for example, scanning or reading. In thlS Case, the scan or read is passed back from the relevant peripheral device 250,260, 270, 280 via link 200 to the server peripheral manager simulator component 160, via the associated client peripheral manager 240, the client peripheral manager simulator component 245 and the virtual channel 320. From the server peripheral manager simulator component 160, the scan or read Is passed to an associated application within the application virtualisation platform 110'. The information relating to the scan or read may then be stored in a database or memory (not shown) if required_ In step 560, the session ends when the connection between the server 100' and the client 200 is terminated when the user logs off the client 200.
As described above, the server peripheral manager simulator component is launched each time the virtualised application is launched, that is, every time a client connects to the server. However, it is also possible to have a single server peripheral manager simulator component which provides a connection port for each instance of the virtualisecl application being launched on the server in response to the connection of a client with the server. The latter option is not preferred as all connections between clients and the server will be lost if the server peripheral manager simulator needs to be restarted for whatever reason.
A peripheral emulator is described above which is associated with the application on the server which needs to connect to a peripheral device on the client. However, this is not essential and its functionality can be included in the server peripheral manager simulator corn ponent.
Although the present invention has been described with reference to an airport environment in which airport-related applications are run with each client corresponding to a check-in terminal, for example, connected to a single server, it will be appreciated that the present Invention can also be used in non-airport environments irrespective of worldwide location, for example, Cruise liner terminals.
ferry terminals, hotels, resorts and conference centres, that is, any application where multiple clients need to establish a connection with a server to access the same application over a communications link having multiple addressing schemes and translation across heterogeneous local and wide area networks, including mobile carrier networks, to enable communications between applications running on the server and peripheral devices associated with the clients_
Claims
1.A system for remotely operating airport terminals comprising:
a server remote from an airport comprising a virtualisation platform, the virtualisation platform hosting a device emulator for a peripheral device and applications associated with multiple airlines, the applications connected to the device emulator;
a first airport terminal communicatively connected to the server and to the peripheral device, the first airport terminal configured to establish a virtual channel for communication between the device emulator and a peripheral manager associated with the client, the peripheral manager including a device driver configured to control the peripheral device.
a server remote from an airport comprising a virtualisation platform, the virtualisation platform hosting a device emulator for a peripheral device and applications associated with multiple airlines, the applications connected to the device emulator;
a first airport terminal communicatively connected to the server and to the peripheral device, the first airport terminal configured to establish a virtual channel for communication between the device emulator and a peripheral manager associated with the client, the peripheral manager including a device driver configured to control the peripheral device.
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| EP13305125.0 | 2013-02-01 | ||
| EP13305125.0A EP2763037B1 (en) | 2013-02-01 | 2013-02-01 | Communications management |
| US13/756,823 | 2013-02-01 | ||
| CA2899404A CA2899404C (en) | 2013-02-01 | 2014-01-31 | Communications management |
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| CA2996140C CA2996140C (en) | 2022-05-24 |
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| US9986040B2 (en) | 2015-07-21 | 2018-05-29 | Amadeus S.A.S. | Communications management system with a separate peripherals server |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060041651A1 (en) * | 2004-06-16 | 2006-02-23 | Air-Transport It Services, Inc. | Shared airport terminal equipment with peripheral management |
| US8032353B1 (en) | 2007-03-30 | 2011-10-04 | Teradici Corporation | Method and apparatus for providing peripheral connection management in a remote computing environment |
| US8479195B2 (en) * | 2007-05-16 | 2013-07-02 | Vmware, Inc. | Dynamic selection and application of multiple virtualization techniques |
| US20090043921A1 (en) * | 2007-08-09 | 2009-02-12 | Protip Roy | Method and System for Virtualization and Re-Direction of I/O Connections to Peripheral Devices |
| US8521915B2 (en) * | 2009-08-18 | 2013-08-27 | Fusion-Io, Inc. | Communicating between host computers and peripheral resources in an input/output (I/O) virtualization system |
| KR101253560B1 (en) * | 2009-11-05 | 2013-04-11 | 한국전자통신연구원 | System for managing a virtualization solution and Apparatus and Method for managing the same |
| US9015706B2 (en) * | 2010-07-08 | 2015-04-21 | Symantec Corporation | Techniques for interaction with a guest virtual machine |
| US9043754B2 (en) * | 2010-12-28 | 2015-05-26 | Microsoft Corporation | Virtualizing embedded devices |
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| WO2014118349A1 (en) | 2014-08-07 |
| CA2899404C (en) | 2018-02-27 |
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| AU2014211318A1 (en) | 2015-08-13 |
| CA2899404A1 (en) | 2014-08-07 |
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