METHODS AND APPARATUS FOR IMPROVED CONTENT DELIVERY INCLUDING CONTENT DELIVERY STREAMS DYNAMICALLY POPULATED IN RESPONSE TO USER REQUESTS
In response to user requests for content, content may be dynamically mapped to communications channels, e.g., QAM channels, used to communicate multiple programs during the same transmission time slot, e.g., through the use of multiplexed MPEG streams. A customer premise device, e.g., STB, uses a tuner tuned to the QAM channel to receive the communicated stream, recovers multiple programs communicated using the single communications channel, and records and/or displays the recovered programs. In this manner, more programs can be received and recorded than there are tuners in the customer premise device, e.g., STB. In some embodiments a content service provider control node processes user requests for content, maps requested programs to transport streams, communicates mapping decision information to a content distribution node, and communicates QAM tuning information to the user devices which can then receive and record multiple programs communicated via a single communications channel.
1 . A content delivery method, the method comprising:
receiving a first request for first content from a first user device;
assigning the requested first content to a first content delivery stream for delivery;
receiving a second request for second content from the first user device; and
assigning the requested second content to said first content delivery stream for delivery during a period of time during which at least some of said first content is to be delivered.
2 . The method of claim 1 , wherein said first and second requests for content are included in a single content request message received from the first user device.
3 . The method of claim 1 , wherein said first and second content include video content and wherein said first content delivery stream is a Transport stream.
4 . The method of claim 3 , wherein said Transport stream is an MPEG-2 transport stream, the method further comprising:
communicating said transport stream to the first user device using a first QAM channel.
5 . The method of claim 4 , wherein said first user device is a set to box.
6 . The method of claim 1 , further comprising:
receiving a third request for third content from a second user device;
determining if the requested third content is assigned for delivery to one of a plurality of content delivery streams; and
if said requested content is already assigned to be delivered by a content delivery stream, communicating tuning information to the second user device corresponding to the content delivery stream to which the requested third content has been assigned for delivery.
7 . The method of claim 6 , further comprising:
if said requested content has not already been assigned to be delivered by a content delivery stream:
assigning the requested third content to a content delivery stream; and
communicating tuning information to the second user device corresponding to the content delivery stream to which the requested third content has been assigned for delivery.
8 . The method of claim 7 , wherein said step of assigning the requested third content to a content delivery stream includes:
determining whether the first content delivery stream has capacity to communicate said third content; and
if said first content delivery stream has capacity to communicate said third content, assigning the third content for delivery using said first content delivery stream, at least a portion of said third content being assigned for delivery during a portion of time during which said first and second content is delivered.
9 . The method of claim 7 , wherein said step of assigning the requested third content to a content delivery stream includes:
determining whether the first content delivery stream has capacity to communicate said third content; and
wherein if said first content delivery stream does not have capacity to communicate said third content, assigning the third content for delivery to another content delivery stream.
10 . The, method of claim 9 , further comprising:
receiving a fourth request for first content from the second user device;
determining if the requested first content is assigned for delivery in said another content delivery stream to which other content requested by the second user is assigned for delivery; and
if it is determined that the requested first content is not assigned for delivery in said another content delivery stream, assigning the requested first content to said another content delivery stream for delivery during a period of time during which at least some of said third content is to be delivered.
11 . The method of claim 9 , further comprising:
receiving a fourth request for first content from the second user device;
determining if the requested first content is assigned for delivery in said another content delivery stream to which other content requested by the second user is assigned for delivery; and
if it is determined that the requested first content is not assigned for delivery in said another content delivery stream,
determining whether said another content delivery stream has capacity to communicate said first content;
wherein if said another content delivery stream does not have capacity to communicate said first content, assigning the first and third content for delivery to a third content delivery stream; and
communicating tuning information to the second user device corresponding to the third content delivery stream to which the requested first and third content has been assigned for delivery.
12 . A content delivery system, the system comprising:
a content request processing module for receiving and processing multiple content requests from a first user device, said multiple content requests including a first request for first content and a second content request from the first user device; and
a content to content delivery stream assignment module for assigning requested content to individual ones of a plurality of available content delivery streams, at least some of said content delivery streams having sufficient bandwidth to support the delivery of multiple programs, said content to content delivery stream assignment module assigning content corresponding to multiple different content requests from the first user to at least one content delivery stream according to a predetermined content to content stream assignment mapping process; and
a multiplexing control module for controlling multiplexing of content assigned to the same content delivery stream.
13 . The system of claim 12 ,
wherein said content request processing module is a message processing module; and
wherein said first and second requests for content are included in a single content request message received from the first user device.
14 . The system of claim 12 , wherein said first and second content includes video content, the system further comprising:
a multiplexer for generating an MPEG-2 Transport stream from a first MPEG-2 elementary stream including at least some of said first content and a second elementary stream including at least some of said second content.
15 . The system of claim 14 , wherein said system further includes:
an information generating module for generating multiplexing information to be included in said MPEG-2 Transport stream, said information generating module generating information used to identify first packets included in said MPEG-2 transport stream which correspond to said first content and to identify second packets included in said MPEG-2 Transport stream corresponding to said second content.
16 . The system of claim 15 , further comprising said first user device, said first user device being a set to box.
17 . The system of claim 12 , further comprising a QAM modulator for modulating the content of said content delivery stream onto a QAM communications channel.
18 . The system of claim 12 , wherein said content request processing module is configured to process and receive additional request from other users, said content request processing module including:
a previous assignment determination module for determining if content requested by an additional user device has already been assigned for delivery to one of the plurality of content delivery streams; and
an assignment communication module for communicating tuning information to the additional user device, said tuning information corresponding to the content delivery stream to which the requested additional content has been assigned for delivery.
19 . The system of claim 18 , wherein said content to content delivery stream assignment module includes means for assigning the additional requested content to a content delivery stream when said content has not already been assigned to be delivered by a content delivery stream.
20 . The system of claim 19 , wherein said content to content delivery stream assignment module includes:
means for determining whether the first content delivery stream has capacity to communicate said additional content; and
means for assigning said additional requested content to the first content delivery stream when said first content delivery stream has capacity to communicate said additional content.
21 . The system of claim 19 , wherein said content to content delivery stream assignment module includes:
means for determining whether the first content delivery stream has capacity to communicate said additional content; and
means for assigning the additional content for delivery to another content delivery stream when said first content delivery stream does not have capacity to communicate said additional content.
22 . A method of operating a user device used to deliver program content, the method comprising:
sending a first request for first content;
sending a second request for send content;
receiving tuning information corresponding to a first content delivery stream to which the requested first content and second content have been assigned to for delivery;
receiving from said first content delivery stream multiplexed data including at least some of said first and second content.
23 . The method of claim 22 , further comprising:
controlling recording of data including at least some of said first and second content received from said first content delivery stream.
24 . The method of claim 23 , wherein said first content corresponds to a first program, wherein said second content corresponds to a second program, the method further comprising:
receiving from said first content delivery stream multiplexed data including at least some content corresponding to a third program, said content corresponding to a third program being delivered during a time interval in which at least some first and second program content is delivered; and
outputting third program image data for display, said third program image data being generated from the received third program content.
25 . The method of claim 24 , wherein said outputting third program image data for display is performed while controlling recoding of said first and second content.
26 . The method of claim 25 , further comprising:
operating a recording device under control of said user device to record said first and second program content on a digital data storage device.
27 . The method of claim 25 , wherein said recording device is included within said user device.
28 . The method of claim 27 , user device includes a sealed housing,
said storage device being located within said sealed housing.
29 . The method of claim 28 , wherein said user device is a set top box.
30 . The method of claim 24 , further comprising:
tuning a QAM receiver to a frequency band identified by said received tuning information, said first frequency band being used to communicate said first content delivery stream.
31 . The method of claim 30 , wherein said frequency band is identified by a stream channel indicator.
32 . The method of claim 31 , further comprising:
operating a MPEG-2 Transport stream demultiplexer to demultiplex packets corresponding to different programs recovered by said QAM receiver from said first content delivery stream.
33 . An apparatus used to deliver program content, the apparatus comprising:
a transmission module for sending requests for content including a first content request and a second content request;
a tuner module for receiving tuning information corresponding to a first content delivery stream to which the requested first content and second content have been assigned to for delivery;
a receiver for receiving from said first content delivery stream multiplexed data including at least some of said first and second content.
34 . The apparatus of claim 33 , further comprising:
a control module for controlling recording of data including at least some of said first and second content received from said first content delivery stream.
35 . The apparatus of claim 34 ,
wherein said first content corresponds to a first program;
wherein said second content corresponds to a second program;
wherein said receiver receives from said first content delivery stream multiplexed data including at least some content corresponding to a third program, said content corresponding to a third program being delivered during a time interval in which at least some first and second program content is delivered; and
means for outputting third program image data for display, said third program image data being generated from the received third program content.
36 . The apparatus of claim 35 , wherein said receiver is a QAM receiver; and wherein said apparatus further includes:
a MPEG-2 Transport stream demultiplexer to demultiplex packets corresponding to different programs recovered by said QAM receiver from said first content delivery stream.
37 . The apparatus of claim 35 ,
wherein said apparatus is a set top box; and
wherein said receiver is coupled to a cable television input.