Method for remote desktop control by remote host input devices

• US 9,256,393 B2
• Filed: 12/21/2011
• Issued: 02/09/2016
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ivashin, Victor, Nelson, Steve
• Primary Examiner(s): SHINGLES, KRISTIE D
• Application Number:
  US13/332,751
• Publication Number:
  US 20130166629A1
• Time in Patent Office: 1,511 Days
• Field of Search: 709/227
• US Class Current: 1/1
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network

Abstract

A system for establishing a remote desktop connection between a client projector and a host computer, the client projector and the host computer being connected by a network. A private remote desktop service virtual channel is established between the host computer and the client projector. In the client projector, a processor initiates a remote desktop connection process, and completes a remote desktop connection to the host computer. The client projector receives keyboard and mouse events from the host computer across the private remote desktop service virtual channel. The keyboard or mouse events received by the client projector are injected into an operating system of the client projector. They are interpreted by a client application remote desktop connection as a valid input device event, and forwarded to the host computer to actuate a graphical user interface of a remote desktop session.

Claims

1. A method for establishing a remote desktop connection between a client computing device and a host computer, the client computing device and the host computer being connected by a network, comprising:

providing a projector as said client computing device, said projector being a client projector configured to execute a client-side application to establish a remote desktop session with said host computer;

providing said host computer, said host computer being configured to execute a serving function in said remote desktop session with said client projector, said host computer having a host image display and a host-input device for receiving host-user inputs;

establishing a remote desktop session between the client projector and the host computer over said network, said remote desktop session being characterized by the following limitations;

(a) a one-to-one remote desktop connection between the client projector and the host computer;

(b) said host computer executing a logon desktop, and as part of said remote desktop session, exclusively displaying said logon desktop on the host image display and directing all host-user inputs from the host-input device exclusively to said logon desktop;

(c) said host computer executing a user desktop separate and secure from the logon desktop, transferring control of the user desktop running on the host computer to the client projector, and transferring the user desktop over said network directly to said client projector for display by said client projector, said user desktop being a hosted desktop;

(d) said hosted desktop on the host computer being configured to be controlled by the client projector by receiving client-input-device signals from the client projector;

establishing a private, remote desktop service, virtual channel between the host computer and the client projector on said network;

in response to the establishing of the remote desktop session, launching a host control module that intercepts and captures host-user inputs signals from said host-input device that are directed to said logon desktop, and redirects the captured host-user inputs through the virtual channel to the client projector; and

in response to receiving the redirected host-user input signals from the host computer, the client projector resending the received host-user input signals over said network back to the hosted desktop on the host computer as said client-input-device signals from the client projector to control the hosted desktop running on said host computer as if the received host-user input signals were generated at the client projector by a client-input device connected to the client projector.

2. The method as in claim 1 wherein in the client projector:

the host-input signals received from the host computer are injected into an operating system of the client projector;

the received host input signals are interpreted as valid input device events local to the client projector, and forwarded back to the host computer over said network and avoiding said virtual channel to actuate a graphical user interface of the hosted desktop on the host computer.

3. The method as in claim 1 further comprising:

using the host computer to instruct the client projector to request a remote desktop connection with the host computer.

4. The method as in claim 3, wherein:

as part of using the host computer to instruct the client projector to request a remote desktop connection with the host computer, the host computer sends to the client projector access credentials including a username and password needed for establishing the remote desktop session; and

in the client projector, using the username and password received from the host computer to send a request for the remote desktop session to the host computer.

5. The method as in claim 4, wherein:

the client projector includes a web server providing a webpage accessible from the host computer and through which a user at the host computer provides the access credentials using a host computer web browser; and

said host-input device is a computer keyboard, and said client projector has a lack of any computer keyboard.

6. The method as in claim 5, wherein:

the webpage is a an access credential page; and

the web server in the client projector is configured to securely provide the access credential page with a digital certificate to the host computer.

7. The method as in claim 4, comprising:

storing in the client projector the username and password sent from the host computer; and

on a subsequent instruction from the host computer to the client projector instructing the client projector to request a remote desktop connection with the host computer, the host client projector using the stored username and password without necessitating that the access credentials be resent anew by the host computer.

8. The method as in claim 3, further comprising:

as part of using the host computer to instruct the client projector to request a remote desktop connection with the host computer, sending a network address of the host computer to the client projector.

9. The method as in claim 1, wherein said host-input device is a computer mouse, and said client projector has a lack of any computer mouse.

10. One or more tangible, non-transitory computer-readable media embodying instructions executable by a computer to perform the method of claim 1.

11. The method as in claim 1, wherein said host computer has a plurality of said host-input devices including a computer keyboard and a computer mouse, and said client projector has a lack of any computer keyboard or computer mouse.

12. A system for establishing a remote desktop connection between a client computing device and a host computer, the client computing device and the host computer being connected by a network, comprising:

a projector as said client computing device, said projector being a client projector configured to execute a client-side application to establish a remote desktop session with said host computer;

said host computer being configured to execute a serving function in said remote desktop session with said client projector, said host computer having a host image display and a host-input device for receiving host-user inputs;

a remote desktop session established between the client projector and the host computer over said network, said remote desktop session being characterized by the following limitations;

(a) a one-to-one remote desktop connection between the client projector and the host computer;

(b) said host computer executing a logon desktop, and as part of said remote desktop session, exclusively displaying said logon desktop on the host image display and directing all host-user inputs from the host-input device exclusively to said logon desktop;

(c) said host computer executing a user desktop separate and secure from the logon desktop, transferring control of the user desktop running on the host computer to the client projector, and transferring the user desktop over said network directly to said client projector for display by said client projector, said user desktop being a hosted desktop;

(d) said hosted desktop on the host computer being configured to be controlled by the client projector by receiving client-input-device signals from the client projector;

a private, remote desktop service, virtual channel on said network between the host computer and the client projector; and

wherein in the host computer, in response to the remote desktop session being established, launching a host control module that intercepts and captures host-user inputs signals from said host-input device that are directed to said logon desktop, and redirects the captured host-user inputs through the virtual channel to the client projector; and

in response to receiving the redirected host-user input signals from the host computer, the client projector resending the received host-user input signals over said network back to the hosted desktop on the host computer as said client-input-device signals from the client projector to control the hosted desktop running on said host computer as if the received host-user input signals were generated at the client projector by a client-input device connected to the client projector.

13. The system as in claim 12, wherein in the client projector:

the host-input signals received from the host computer are injected into an operating system of the client projector;

the received host input signals are interpreted as valid input device events local to the client projector, and forwarded back to the host computer over said network avoiding said virtual channel to actuate a graphical user interface of the hosted desktop session.

14. The system as in claim 13, wherein said host-input device is a computer keyboard, and said client projector has a lack of any computer keyboard.

15. The system as in claim 12 wherein:

the host computer to instructs the client projector to accept a remote desktop connection with the host computer.

16. The system as in claim 15 wherein:

the client projector further comprises a memory that stores the username and password sent from the host computer; and

on a subsequent instruction from the host computer to the client projector instructing the client projector to request a remote desktop connection with the host computer, the host client projector uses the stored username and password without necessitating that the access credentials be resent anew by the host computer.

17. The system as in claim 15 wherein:

as part of the host computer instructing the client projector to request a remote desktop connection with the host computer, the host computer sends to the client projector access credentials including a username and password needed for establishing the remote desktop session; and

in the client projector, the username and password received from the host computer are used to send a request for the remote desktop session to the host computer.

18. The system as in claim 17 wherein the client projector further comprises a web server providing an access credential webpage with a digital certificate to the host computer through which a user at the host computer provides access credentials using a host computer web browser, said access credentials including a username and password needed for establishing the remote desktop session.

19. The system as in claim 12, wherein said host-input device is a computer mouse, and said client projector has a lack of any computer mouse.

20. The system of claim 12, wherein said host computer has a plurality of said host-input devices including a computer keyboard and computer mouse, and said client projector has a lack of any computer keyboard or computer mouse.