Interactive delivery of media using dynamic playlist generation subject to restrictive criteria

• US 7,689,705 B1
• Filed: 10/29/2001
• Issued: 03/30/2010
• Est. Priority Date: 10/27/2000
• Status: Active Grant

• Current Assignee: Tahoe Research Limited (f/k/a Learndale Limited) (Vector Capital Corporation)
• Original Assignee: RealNetworks, Inc.
• Inventors: Kirk, Alexander J, Lester, James P
• Primary Examiner(s): Flynn; Nathan
• Assistant Examiner(s): Siddiqi; Mohammad A
• Application Number:
  US10/021,752
• Time in Patent Office: 3,074 Days
• Field of Search: 709/203, 709/231, 709/232, 705/51, 707/102, 707/104.1
• US Class Current: 709/231
• CPC Class Codes: G06F 16/435 Filtering based on additional data, e.g. user or group profiles
• CPC Class Codes: G06F 16/4387 by the use of playlists
• CPC Class Codes: G06F 16/44 Browsing; Visualisation therefor
• CPC Class Codes: H04H 60/06 Arrangements for scheduling broadcast services or broadcast-related services
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04N 21/2541 Rights Management protecting software against unauthorised usage in a vending or licensing environment G06F21/10; security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/26258 for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40
• CPC Class Codes: H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612

Abstract

A media delivery scheme distributes a stream of media files to a group of users while allowing individual users to request specific media files. In one embodiment, a media server maintains a playlist of media files to broadcast, and requests for media must satisfy certain restrictive criteria to be added to the playlist. In another aspect of a preferred embodiment, the media server schedules requested media so as to comply with provisions of the DMCA.

Claims

1. A computer implemented method of delivering digital media items to a user electronic device, the method comprising:

obtaining at the computer a playlist comprising a sequentially ordered plurality of digital media items that satisfies a set of restrictive criteria, wherein the set of restrictive criteria includes a condition that would preclude a media file from being slaved within a defined period of time;

playing said playlist by the computer, wherein playing said playlist comprises sequentially delivering to the user electronic device, via a computer network, said sequentially ordered plurality of digital media items; and

while the computer is playing the playlist;

receiving, from the user electronic device, an indication to add a requested digital media item to the playlist;

evaluating whether adding the requested digital media item to the playlist would satisfy the set of restrictive criteria; and

when the set of restrictive criteria is satisfied, selectively adding the requested digital media item to the playlist for delivery to the user electronic device subsequent to receipt of the request.

2. The method of claim 1, wherein the set of restrictive criteria comprises whether the playlist satisfies a set of group preferences.

3. The method of claim 1, wherein the adding comprises inserting a requested media item at a random position in the playlist.

4. The method of claim 1, wherein the adding comprises:

attempting to add the requested media item to a position in the playlist so that the modified playlist satisfies the set of restrictive criteria; and

disregarding the request if the requested media item cannot be added to the playlist so that the modified playlist would satisfy the set of restrictive criteria.

5. The method of claim 4, wherein the set of restrictive criteria comprises whether the playlist complies with the Digital Millennium Copyright Act requirement for obtaining a statutory license.

6. The method of claim 1, wherein the delivering media items comprises broadcasting media items to the user electronic device, and wherein said set of restrictive criteria comprises whether fewer than a substantial number of media items are delivered.

7. The method of claim 6, wherein the delivering media items further comprises broadcasting media items to the user electronic device, and wherein said set of restrictive criteria comprises whether fewer than a substantial number of media items are delivered at a time that the user electronic device is informed the requested media items will be delivered.

8. The method of claim 1, wherein delivering the media items comprises broadcasting media items to the user electronic device so that the media items are delivered in compliance with the Digital Millennium Copyright Act requirement for obtaining a statutory license.

9. The method of claim 1, further comprising:

providing a searchable database of media items that allows at least one of the user electronic devices to search the database by a set of media attributes;

receiving a request from one or more of the user electronic devices for a media item from the database; and

selectively adding the requested media item from the database to the playlist if the modified playlist would satisfy the set of restrictive criteria.

10. The method of claim 1, wherein the adding comprises limiting the number of requests from the user electronic device.

11. The method of claim 1, wherein the media items are sound recordings.

12. The method of claim 1, wherein the set of restrictive criteria includes a condition that would preclude a media file from outside a defined genre from being added to the playlist.

13. The method of claim 2, wherein the set group preferences defines one of a genre, type or category of a channel.

14. One or more media servers for delivering digital media files to a plurality of client electronic devices over a computer network, the one or more media servers comprising:

a network connection for communicatively coupling one or more of the media servers with the plurality of client electronic devices over the network;

a playlist memory containing a playlist, wherein the playlist comprises a sequentially ordered plurality of digital media items that satisfies a set of restrictive criteria, wherein the set of restrictive criteria includes a condition that would preclude a media file from being slaved within a defined period of time;

a media storage memory containing a library of the digital media files; and

a processor coupled with the network connection, the playlist memory, and the media storage memory, the processor operative to;

play the playlist by transmitting digital media files according to the sequential order indicated by the playlist from the media storage memory to the plurality of client electronic devices over the computer network; and

while the playlist is playing;

evaluate requests to add a requested digital media item to the playlist from one or more of the client electronic devices using the set of restrictive criteria; and

upon at least one of the requests satisfying the set of restrictive criteria, add an indication of the requested digital media file to the playlist for delivery to the user electronic device subsequent to receipt of said at least one of the requests.

15. The one or more media servers of claim 14, wherein the one or more media servers broadcast fewer than a substantial number of digital media files within an hour of receiving the request for a corresponding digital media file, or at a time that at one client electronic device is informed that the requested digital media file will be broadcast.

16. The one or more media servers of claim 14, wherein the set of restrictive criteria comprise whether the playlist satisfies a set of group preferences.

17. The one or more media servers of claim 14, wherein the digital media files are digital sound files.

18. The one or more media servers of claim 14, wherein:

the playlist memory contains a plurality of playlists, each playlist corresponding to a network media channel;

the processor is adapted to receive requests for digital media files from the plurality of client electronic devices, each request being associated with a network media channel, wherein the processor evaluates each request using one or more restrictive criteria and, if the playlist including the requested digital media file would satisfy the set of restrictive criteria, adds the requested digital media file to the playlist; and

the one or more media servers broadcast digital media files sequentially to the network on each of the plurality of network media channels according to each corresponding playlist.

19. The one or more media servers of claim 18, wherein, for each network media channel, the one or more media servers broadcast fewer than a substantial number of requested digital media files within an hour of receiving at least one of the requests for the corresponding digital media file, or at a time that at least one of the client electronic devices is informed that the requested digital media file will be broadcast.

20. The one or more media servers of claim 18, wherein the set of restrictive criteria comprises a set of group preferences to each network media channel.