Method and architecture to support interaction between a host computer and remote devices

• US 7,299,304 B2
• Filed: 11/20/2001
• Issued: 11/20/2007
• Est. Priority Date: 11/20/2001
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Saint-Hilaire, Ylian, Edwards, Jim W.
• Primary Examiner(s): PEYTON, TAMMARA R
• Application Number:
  US09/989,136
• Publication Number:
  US 20030101294A1
• Time in Patent Office: 2,191 Days
• Field of Search: 710/8, 710/11, 710/10, 710/15, 345/738, 709/217, 709/328, 370/432, 370/390
• US Class Current: 710/11
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/50 Address allocation

Abstract

A method and architecture for enabling interaction between a remote device and a host computer. A service provided by the remote device is discovered, and a description pertaining to the service is retrieved by the host computer. A network communication link is the established between the remote device and the host computer based on connection information provided by the description. Host-side and client-side software service modules are run on the host and remote devices to enable interaction between the devices using a service protocol that is specific to the service. Various service protocols are provided, including a display service protocol and an input service protocol. Using commands provided by each protocol, the host computer is enabled to control the service remotely by pushing data and appropriate commands to the remote device, whereupon these commands are processed by the client-side service module to perform service operations that employ the sent data.

Claims

1. A method for controlling a remote display device, comprising:

defining a service-specific protocol to facilitate remote control of a service provided by the remote display device, wherein the service-specific protocol defines display commands that are used to display content on the display device by sending display commands and data pertaining to the display content from the host computer to the remote device over the network communication link;

sending data corresponding to the service provided by the remote display device via a host-side software module running on the host computer in a format defined by the service-specific protocol from the host computer to the remote display device over a network communication link; and

sending control commands from the host computer to the remote display device based on the service-specific protocol to cause the remote display device to perform the service using the data that are sent to the remote display device.

2. The method of claim 1, wherein the network communication link is established by:

connecting the host computer to a network to which at least one remote device is already connected;

obtaining an IP address for the host computer;

broadcasting a search message over the network requesting that any device meeting a search criteria defined by data contained in the search message to contact the host computer using the IP address for the host computer;

listening for a response to the search message, and in response thereto;

retrieving a description of a service provided by a remote device that responds to the search message to obtain a port number that may be used to communicate with the service; and

opening a TCP (transmission control protocol) socket that uses the port number.

3. The method of claim 1, wherein the service-specific protocol further defines commands that are used to display streaming video on the display device by sending streaming video commands and data pertaining to the streaming video content from the host computer to the remote device over the network communication link.

4. A machine-readable media on which a plurality of instructions are stored that when executed by the processor of a host computer perform the operations of:

interacting with a remote device to discover a service provided by the remote device, wherein the remote device comprises an input service;

interacting with the remote device to establish a network communication link between the remote device and the host computer;

sending data corresponding to the service from the host computer to the remote device over the network communication link;

sending commands from the host computer to the remote device over the network communication link based on a service protocol that is specific to the service provided by the remote device to cause the remote device to perform service operations specified by the commands that employ the data sent to the remote device, wherein the service protocol includes input primitives to enable input data to be sent from the remote device to be interpreted by the host-side software module running on the host computer.

5. The machine-readable media of claim 4, wherein the plurality of input primitives are further to:

listen for input data from the remote device, wherein the input data has a format corresponds to said plurality of input primitives; and

interpret the input data to generate input commands based on the input protocol.

6. The machine-readable media of claim 4, wherein establishing the network communication link comprises performing the operation of:

broadcasting a search message from the host computer over the network requesting that any device meeting a search criteria defined by data contained in the search message to contact the host computer using a network address assigned to the host computer;

retrieving a description of a service provided by a remote device that responds to the search message to obtain a port number that may be used to communicate with the service; and

opening a TCP (transmission control protocol) socket that uses the port number.

7. A device comprising:

a network interface;

a memory in which a plurality of machine instructions are stored comprising a set of client-side software to control a service provided by the device in response to service protocol specific data and commands received by the device having a format defined by a protocol specific to the service; and

a controller, coupled to the network interface and the memory, to execute said plurality of machine instructions to perform the operations of;

interacting with a remote host computer to establish a network communication link via the network interface with the remote host computer; and

in response to receiving service protocol specific data and commands that are pushed to the device from the remote host computer over the network communications link, performing service operations specified by the commands that employ the data,

wherein the device further includes a display coupled to the controller, and the service provided by the device comprises a streaming video service that is driven by commands defined by the service specific protocol to cause the device to display streaming video on the display in response to receiving data and display commands from the remote host computer over the network communication link.

8. The device of claim 7, wherein the network communication link is established by performing the operations of:

broadcasting device identification and service information identifying a service provided by the device and a communications port via which other devices connected to the network including the remote host computer may communicate with the device;

opening a TCP/IP socket via the communications port.

9. The device of claim 7, wherein the service provided by the device further comprises a streaming video service that is driven by streaming video commands defined by the service specific protocol to cause the device to display streaming video content on the display in response to receiving data and streaming video commands from the remote host computer over the network communication link.

10. The device of claim 7, wherein the device comprises a display adapter that further includes an interface to couple to a display, and the service provided by the device comprises a display service that is driven by display commands defined by the service specific protocol to cause the device send display content to the display in response to receiving data and display commands from the remote host computer over the network communication link.

11. The device of claim 7, further comprising an audio driver coupled to the controller and speakers, and wherein the service specific protocol includes audio commands that are used to cause the device to playback audio content in response to receiving audio commands and audio data pertaining to the audio content from the remote host computer over the network communication link.