Proxy apparatus and method for streaming media information

• US 6,484,212 B1
• Filed: 04/20/1999
• Issued: 11/19/2002
• Est. Priority Date: 04/20/1999
• Status: Expired due to Term

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Corporation (AT&T, Inc.)
• Inventors: Rosen, Kenneth H, Stuntebeck, Peter H, Markowitz, Robert Edward, OʼNeil, Joseph Thomas
• Primary Examiner(s): Najjar, Saleh
• Application Number:
  US09/294,525
• Time in Patent Office: 1,309 Days
• Field of Search: 709/217, 709/219, 709/225, 709/226, 709/229, 709/231, 709/235, 709/246
• US Class Current: 709/246
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04N 21/222 Secondary servers, e.g. proxy server, cable television Head-end provisioning of proxy services in data packet switching networks H04L67/56
• CPC Class Codes: H04N 21/2265 Server identification by a unique number or address, e.g. serial number network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/23113 involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions storage management, e.g. defragmentation G06F3/0604; snloading stored programs G06F9/445; housekeeping operations in file systems, e.g. deletion policies G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/25833 involving client hardware characteristics, e.g. manufacturer, processing or storage capabilities allocation of resources considering hardware capabilities in multiprogramming arrangements G06F9/5044; allocation of resources considering software capabilities in multiprogramming arrangements G06F9/5055
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/6581 Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Abstract

A proxy apparatus and method for streaming media information via at least one network. When a user device communicates with the proxy apparatus using a particular bandwidth and requests that media information be provided from a media server, the proxy apparatus first determines if a version of the media information encoded for the user device'"'"'s connection bandwidth has been stored in the proxy apparatus. If a version of the media information encoded for the user device'"'"'s bandwidth is not available from the proxy apparatus, the proxy apparatus sends a request to a media server for the media information. Once the media server receives the request, the media server begins to stream a copy of the media information encoded for the user device'"'"'s bandwidth to the user device via the network and proxy device. If a version of the media information for the bandwidth is not available from the media server, the version for the largest bandwidth that does not exceed the bandwidth of the user device connection, is streamed to the user device. After the user device receives the media information, the proxy apparatus sends requests to the media server for versions of the same media information but encoded for different bandwidths. These copies of these various versions, along with the version actually received by the user device, are stored in a media storage device associated with the proxy device.

Claims

1. A method of streaming information from a proxy device to a user device, comprising:

receiving a request for a version of the media information;

streaming media information to the user device without interacting with a media server, if the requested version of the media information is available from the proxy device;

streaming the requested version of the media information from a media server to the user device through the proxy device if the requested version is not available from the proxy device;

reading meta-tag information of the version of the media information;

identifying other versions of the media information available from the media server based on the meta-tag information;

retrieving the other versions of the media information from the media server; and

storing the other versions of the media information in the media storage device.

2. The method of claim 1, wherein the media information includes at least one of video and audio information.

3. The method of claim 1, wherein the media storage device includes at least one of a hard disk, a magnetic tape, a read/write CD-ROM, a RAM and a cache memory.

4. The method of claim 1, wherein the media information is streamed to the user device using a first communication protocol and the media information is streamed to the proxy device using a second communication protocol.

5. The method of claim 4, wherein the first communication protocol is different from the second communication protocol, and wherein the first communication protocol is determined by the user device and the second communication protocol is determined by the proxy device.

6. A proxy device, comprising:

a controller; and

a user device interface through which the controller communicates with a user device, wherein;

the controller receives a request for a version of media information from the user device via the user device interface;

streams the requested version of the media information to the user device without interacting with a media server, if the requested version of the media information is available from the proxy device; and

streams the requested version of the media information from a media server to the user device if the requested version is not available from the proxy device;

wherein the controller reads meta-tag information of the version of the requested media information, identifies other versions of the requested media information available from the media server based on the meta-tag information, retrieves the other versions of the requested media information from the media server and stores the other versions of the requested media information in the media storage device.

7. The proxy device of claim 6, wherein the media information includes at least one of video and audio information.

8. The proxy device of claim 6, wherein the media storage device includes at least one of a hard disk, a magnetic tape, a read/write CD-ROM, a RAM and a cache memory.

9. The proxy device of claim 6, wherein the media information is streamed to the user device using a first communication protocol and the media information is streamed to the proxy device using a second communication protocol.

10. The proxy device of claim 9, wherein the first communication protocol is different from the second communication protocol, and wherein the first communication protocol is determined by the user device and the second communication protocol is determined by the proxy device.