Systems and methods for connecting networked devices

• US 7,889,678 B2
• Filed: 12/28/2006
• Issued: 02/15/2011
• Est. Priority Date: 12/28/2005
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Electric US Incorporated (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Digital Electronics America Incorporated (Mitsubishi Electric Corporation)
• Inventors: Peterson, Brian
• Primary Examiner(s): Wu; Daniel
• Assistant Examiner(s): OTT, FREDERICK R
• Application Number:
  US11/617,520
• Publication Number:
  US 20070217426A1
• Time in Patent Office: 1,510 Days
• Field of Search: 370/254
• US Class Current: 370/254
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/2816 Controlling appliance services of a home automation network by calling their functionalities arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00
• CPC Class Codes: H04L 12/2838 Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths adaptations of television systems for transmission by electric cable for domestic distribution H04N7/106; hybrid transport H04L12/6418; home network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 12/40052 High-speed IEEE 1394 serial bus bus transfer protocol on a daisy chain bus using an embedded synchronisation G06F13/426
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/40 using virtualisation of network functions or resources, e.g. SDN or NFV entities
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066

Abstract

Systems and methods that facilitate the selection and connection of sub-devices managed by virtual device or logical units (LUs) within a network. In one exemplary embodiment, LU connections are preferably brought to the IP layer using HTTP commands and responses. These IP layer commands are used to communicate connection information among the LUs involved in the connection and to allow for LUs to determine which sub-devices within the LU will be used in a connection. When the specific details have been determined, the sink device will work at the network specific level to make the actual connection. This allows for the connections between LUs to be network independent until all of the specific details of the connection have been determined. After that, a connection is established using network specific commands and protocols.

Claims

1. In a method of connecting devices within a digital network of devices wherein the services and functions of the devices and sub-devices of the devices are represented as a plurality of logical units and wherein the logical units comprise one or more logical units that represent the services and control the functions of a single physical device, one or more logical units that represent the services and control the functions of one or more sub-devices of a single physical device, one or more logical units that represent the services and control the functions of a sub-device of a single physical device, and one or more logical units that represent the services and control the functions of a plurality of sub-devices of more than one physical device, the improvement comprising the steps of

presenting a list of source logical units from the plurality of logical units to a user,

communicating a connection request from a control logical unit to a first logical unit selected by the user to be a source logical unit of a connection, the request including an identification of a second logical unit selected by the user to be a sink logical unit of the connection, wherein the source logical unit controls a plurality of source sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device, and wherein the sink logical unit controls a plurality of sink sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device,

identifying a source sub-device for connection to a sink sub-device, wherein the source logical unit determines which of the plurality of source sub-devices it controls is available for connection to a sink sub-device,

appending the identity of the source sub-device determined to be available for connection to a sink sub-device to the connection request,

communicating the connection request from the source logical unit to the sink logical unit,

identifying a sink sub-device for connection to the source sub-device determined to be available for connection to the sink sub-device, wherein the sink logical unit determines which of the plurality of sink sub-devices it controls is available for connection to a source sub-device determined to be available for connection to a sink sub-device, and

connecting the source sub-device determined to be available for connection to a sink sub-device to the sink sub-device determined to be available for connection to a source sub-device.

2. The method of claim 1 further comprises a step of presenting a list of sink logical units.

3. The method of claim 1 wherein the step of presenting a list of sink logical units includes presenting a graphical user interface.

4. The method of claim 1 wherein the steps of communicating include communicating using an IP that is independent of an underlying network protocol.

5. The method of claim 4 wherein the IP is a web based protocol.

6. The method of claim 1 wherein the steps of communicating include communicating over a medium that is separate from medium over which the devices are linked.

7. The method of claim 1 further comprising the step of assigning a connection ID to the connection.

8. The method of claim 7 further comprising the step of storing the connection ID in persistent memory.

9. The method of claim 1 wherein the step of determining the available source sub-device includes issuing a notification to the user to resolve an ambiguity.

10. The method of claim 9 wherein the notification includes a program guide associated with the source sub-devices.

11. The method of claim 9 wherein the notification includes a track list associated with the source sub-devices.

12. The method of claim 1 further comprising the step of creating and storing a results file upon successful connection.

13. The method of claim 12 wherein the results file includes a unique connection ID and an identification of the logical unit that owns the connection.

14. The method of claim 13 wherein the results file further identifies a connection initiator logical unit, the logical unit, the logical unit, the sub-device and the sub-device.

15. The method of claim 13 further comprising the steps of

communicating a request to display a service banner of the source sub-device on the sink sub-device from the control logical unit to the source logical unit, and

identifying the service banner to be displayed using the unique connection ID.

16. The method of claim 13 further comprising the steps of

communicating a request to display a control panel of the source sub-device on the sink sub-device from the control logical unit to the source logical unit, and

identifying the control panel to be displayed using the unique connection ID.

17. The method of claim 13 further comprising the step of preventing a logical unit that is not the owner of the connection from altering the connection.

18. A method of reserving a connection between devices within a digital network of devices wherein the services and functions of the devices and sub-devices of the devices are represented as a plurality of logical units and wherein the logical units comprise one or more logical units that represent the services and control the functions of a single physical device, one or more logical units that represent the services and control the functions of one or more sub-devices of a single physical device, one or more logical units that represent the services and control the functions of a sub-device of a single physical device, and one or more logical units that represent the services and control the functions of a plurality of sub-devices of more than one physical device, comprising the steps of

communicating a request for a reservation from a source logical unit to a sink logical unit, wherein the source logical unit controls a plurality of source sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device, and the sink logical unit controls a plurality of sink sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device,

checking the reservation of the request for a reservation for conflicts wherein the sink logical unit checks the request for a reservation against reservations stored in its reservation database, each reservation stored in the reservation database is assigned a unique reservation ID,

assigning a first reservation ID to the reservation of the request for a reservation,

communicating a request for a connection having a second reservation ID from the source logical unit to the sink logical unit,

comparing the second reservation ID in the connection request with the reservation IDs of reservations stored in the reservation database of the sink logical unit, and

making a connection if the second reservation ID in the connection request matches one of the reservation IDs of reservations stored in the reservation database of the sink logical unit.

19. In a method for time shift viewing (TSV) within a digital network of devices wherein the services and functions of the devices and sub-devices of the devices are represented as a plurality of logical units and wherein the logical units comprise one or more logical units that represent the services and control the functions of a single physical device, one or more logical units that represent the services and control the functions of one or more sub-devices of a single physical device, one or more logical units that represent the services and control the functions of a sub-device of a single physical device, and one or more logical units that represent the services and control the functions of a plurality of sub-devices of more than one physical device, the improvement comprising the steps of

presenting a list of source and sink logical units from the plurality of logical units to a user,

identifying a logical unit that supports TSV,

communicating a first connection request from a control logical unit to a first logical unit selected by the user to be a first source logical unit of a first connection, the request including an identification of a TSV logical unit to be a first sink logical unit in a first leg of a TSV connection, wherein the first source logical unit controls a plurality of source sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device, and wherein the TSV logical unit identified to be the first sink logical unit controls a plurality of sink sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device,

identifying a source sub-device to be used in the first leg of the TSV connection, wherein the first source logical unit determines which of the plurality of source sub-devices it controls is available for connection in the first leg of the TSV connection,

appending the identity of the source sub-device determined to be available for connection in the first leg of the TSV connection to the connection request,

communicating the first connection request from the first source logical unit to the TSV logical unit,

identifying a TSV sink sub-device for connection to the source sub-device determined to be available for connection in the first leg of the TSV connection, wherein the TSV logical unit determines which of the plurality of sink sub-device it controls is available for connection to the source sub-device determined to be available for connection in the first leg of the TSV connection,

connecting the source sub-device determined to be available for connection in the first leg of the TSV connection to the TSV sink sub-device determined to be available for connection to the source sub-device determined to be available for connection in the first leg of the TSV connection,

assigning a first TSV connection ID to the first leg of the TSV connection,

communicating a second connection request from the control logical unit to the TSV logical unit to be a second source logical unit of a second connection, the request identifying a second logical unit to be a second sink logical unit in a second leg of the TSV connection and identifying the connection of the first leg of the TSV connection, wherein the TSV logical unit controls a plurality of source sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device, and wherein and the second sink logical unit controls a plurality of sink sub-devices comprising more than one sub-device of a single physical device or a plurality of sub-devices of more than one physical device, and wherein,

identifying a source sub-device to be used in the second leg of the TSV connection, wherein the TSV logical unit determines which of the plurality of source sub-devices it controls is available for connection in the second leg of the TSV connection,

appending the identity of the source sub-device determined to be available for connection in the second leg of the TSV connection to the second connection request,

communicating the second connection request from the TSV logical unit to the second sink logical unit,

identifying a sink sub-device for connection to the source sub-device determined to be available for connection in the second leg of the TSV connection, wherein the second sink logical unit determines which of the plurality of sink sub-devices it controls is available for connection to the source sub-device determined to be available for connection in the second leg of the TSV connection,

connecting the source sub-device determined to be available for connection in the second leg of the TSV connection to the sink sub-device determined to be available for connection to the source sub-device determined to be available for connection in the second leg of the TSV connection.

20. A method for a sink logical unit taking possession of a converter logical unit within a digital network of devices wherein the services and functions of the devices and sub-devices of the devices are represented as a plurality of logical units and wherein the logical units comprise one or more logical units that represent the services and control the functions of a single physical device, one or more logical units that represent the services and control the functions of one or more sub-devices of a single physical device, one or more logical units that represent the services and control the functions of a sub-device of a single physical device, and one or more logical units that represent the services and control the functions of a plurality of sub-devices of more than one physical device, comprising the steps of

scanning a list of devices to insure that a converter networked sub-device is not already included as a sub-device of one of the plurality of logical units, and

taking possession of the converter logical unit and including the converter networked sub-device information as part of the sink logical unit'"'"'s sub-device information to form an updated sink logical unit.

21. The method of claim 20, further comprising a step of setting a unit type tag to invisible.