Peer- to- peer set-top box system

• US 20090300673A1
• Filed: 06/11/2007
• Published: 12/03/2009
• Est. Priority Date: 07/24/2006
• Status: Abandoned Application

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: NDS Limited (Cisco Systems, Inc.)
• Inventors: Smith, Trevor, Smith, Nigel, Ashley, Alex, Bachet, Franck, Hall, Nicholas Ashton, Poupon, David, Walker, James Geoffrey
• Application Number:
  US12/308,431
• Publication Number:
  US 20090300673A1
• Time in Patent Office: Days
• US Class Current: 725/31
• CPC Class Codes: G06F 16/683 using metadata automatically derived from the content
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1063 Discovery through centralising entities
• CPC Class Codes: H04L 67/1076 Resource dissemination mechanisms or network resource keeping policies for optimal resource availability in the overlay network
• CPC Class Codes: H04L 67/108 characterised by resources being split in blocks or fragments
• CPC Class Codes: H04N 21/2221 being a cable television head-end CATV in broadcast systems H04H20/78
• CPC Class Codes: H04N 21/23109 by placing content in organized collections, e.g. EPG data repository details of retrieval of video data and associated meta data in video databases G06F16/739
• CPC Class Codes: H04N 21/25891 being end-user preferences retrieval of video data in a video database based on user preferences G06F16/739; arrangements for recognizing users' preferences H04H60/46; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18
• CPC Class Codes: H04N 21/4425 Monitoring of client processing errors or hardware failure
• CPC Class Codes: H04N 21/47202 for requesting content on demand, e.g. video on demand
• CPC Class Codes: H04N 21/4788 communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/632 using a connection between clients on a wide area network, e.g. setting up a peer-to-peer communication via Internet for retrieving video segments from the hard-disk of other client devices broadcast-related systems characterised by transmission among terminal devices H04H60/80; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 21/6375 for requesting retransmission , e.g. of data packets lost or corrupted during transmission from serverARQ protocols H04L1/18; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A content sharing system, for implementation in a requesting peer, to receive at least a part of a chunk from a serving peer, the chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers including the serving peer via a communications network, the content item being media content originally broadcast in a media stream by a Headend to at least some of the peers, the system including a metadata module to receive chunk metadata identifying the location of the chunk based on an identifier in the media stream originally broadcast by the Headend, a content transfer module to request the at least part of the chunk from the serving peer based on the chunk metadata, and receive the at least part of the chunk from the serving peer. Related apparatus and methods are also described.

Claims

1-58. -58. (canceled)

59. A content sharing system, for implementation in a requesting peer, to receive at least a part of a first chunk from a first serving peer and at least part of a second chunk from a second serving pear, the first chunk and the second chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers including the first serving peer and the second serving peer via a communications network, the first serving peer being associated with a storage arrangement in which the first chunk is recorded, the second serving peer being associated with a storage arrangement in which the second chunk is recorded, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of peers, the system comprising:

a metadata module to receive chunk metadata identifying the location of the first chunk and the second chunk based on an identifier in the media stream originally broadcast by the Headend; and

a content transfer module operationally connected to the metadata module, the content transfer module being operative to;

request the at least part of the first chunk from the first serving peer based on the chunk metadata;

request the at least part of the second chunk from the second serving peer based on the chunk metadata;

receive the at least part of the first chunk from the first serving peer; and

receive the at least part of the second chunk from the second serving peer, and wherein;

at least part of the content item is recorded in the storage arrangement of the first serving peer recorded from the media stream broadcast by the Headend;

at least part of the content item is recorded in the storage arrangement of the second serving peer recorded from the media stream broadcast by the Headend;

the recording of the at least part of the content item in the first serving peer is different from the recording of the at least part of the content item in the second serving peer based on a bit-to-bit comparison; and

the identifier is at least one of the following;

an entitlement control message, a program clock reference, a group of pictures timecode, and an RTS timecode.

60. A content sharing system, for implementation in a requesting peer, to receive at least a part of a first chunk from a first serving peer, the first chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers including the first serving peer via a communications network, the first serving peer being associated with a storage arrangement in which the first chunk is stored, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of peers, the system comprising:

a metadata module to receive chunk metadata identifying the location of the first chunk based on an identifier in the media stream originally broadcast by the Headend; and

a content transfer module operationally connected to the metadata module, the content transfer module being operative to;

request the at least part of the first chunk from the first serving peer based on the chunk metadata; and

receive the at least part of the first chunk from the first serving peer.

61. The system according to claim 60, wherein the peers include a second serving peer, the second serving peer being associated with a storage arrangement in which the first chunk is stored, the content transfer module being operative to:

request another part of the first chunk from the second serving peer based on the chunk metadata; and

receive the other part of the first chunk from the second serving peer.

62. The system according to claim 60, wherein the peers include a second serving peer, the second serving peer having a storage arrangement in which a second chunk of the content item is stored, the metadata module being operative to receive chunk metadata identifying the location of the second chunk based on the identifier in the media stream originally broadcast by the Headend, the content transfer module being operative to:

request at least part of the second chunk from the second serving peer based on the chunk metadata; and

receive the at least part of the second chunk from the second serving peer.

63. The system according to claim 60, wherein:

at least part of the content item is included in a recording in the storage arrangement of the first serving peer;

at least part of the content item is included in a recording in the storage arrangement of the second serving peer; and

the recording of the first serving peer is different from the recording of the second serving peer based on a bit-to-bit comparison.

64. The system according to claim 63, wherein the content item stored in the storage arrangement of at least one of the first serving peer and the second serving peer is recorded from the media stream broadcast by the Headend.

65. The system according to claim 60, wherein the identifier is at least one of the following:

an entitlement control message, a program clock reference, a group of pictures timecode, and an RTS timecode.

66. The system according to claim 60, wherein the first chunk is at least partially encrypted, the identifier not being encrypted.

67. The system according to claim 60, wherein once the first chunk is received, the content transfer module is able to serve the first chunk to the other peers.

68. The system according to claim 60, wherein the content transfer module is operative to receive the at least part of the first chunk from the first serving peer while the content item is still being received by the first serving peer from the Headend.

69. The system according to claim 60, wherein the communications network is an Internet protocol network.

70. The system according to claim 60, wherein the metadata module is operative to receive index metadata from the first serving peer, the system further comprising an indexer operationally connected to the metadata module, the indexer being operative to build, based on the index metadata, a random access index to at least part of the content item received by the content transfer module.

71. The system according to claim 60, wherein the requesting peer is associated with a storage arrangement having a subscriber section and an operator section, the subscriber section being operative to store the content item, wherein the system includes a deletion module operative to transfer the content item from the subscriber section to the operator section when a subscriber of the requesting peer requests to delete the content item.

72. The system according to claim 71, wherein the content item has a sharing expiration date, the deletion module being operative to delete the content item from the operator section on, or after, the sharing expiration date.

73. The system according to claim 60, further comprising an interactive search application to search for the content item based on event information data received in the media stream broadcast by the Headend.

74. The system according to claim 60, wherein:

the requesting peer is operative to receive the content item in the media stream broadcast by the Headend so that the content item is recordable by the requesting peer;

the requesting peer is associated with a storage arrangement to store at least part of the content item;

the system further comprises a correction sub-system to identify a bad/missing chunk of the content item, the first chunk being a replacement for the bad/missing chunk, the correction sub-system being operationally connected to the content transfer module;

the content transfer module is operative to receive the first chunk from at least one of the peers; and

the correction sub-system is operative to add the first chunk to the at least part of the content item stored in the storage arrangement associated with the requesting peer.

75. The system according to claim 74, wherein the correction sub-system is operative to automatically suggest, to a subscriber, recovery of the bad/missing chunk from at least one of the peers.

76. The system according to claim 74, wherein the missing chunk was not recorded by the requesting peer from the media stream broadcast by the Headend.

77. The system according to claim 74, wherein the bad chunk was received with an error by the requesting peer from the media stream broadcast by the Headend.

78. The system according to claim 74, wherein the requesting peer started recording the content item after the beginning of the content item, resulting in the missing chunk at the beginning of the content item.

79. The system according to claim 74, wherein the requesting peer stopped recording the content item before the end of the content item, resulting in the missing chunk at the end of the content item.

80. The system according to claim 74, wherein the content item is a pushed content item, pushed by the Headend, the missing chunk not being recorded by the requesting peer from the media stream broadcast by the Headend.

81. A content sharing system, for implementation in a requesting peer, to receive a first chunk from a first serving peer and a second chunk from a second serving peer, the first chunk and the second chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers via a communication network, the peers including the first serving peer and the second serving peer, the first serving peer being associated with a storage arrangement which has a recording including at least part of the content item, the second serving peer being associated with a storage arrangement which has a recording including at least part of the content item, the recording of the first serving peer is different from the recording of the second serving peer based on a bit-to-bit comparison, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the system comprising a content transfer module to:

request the first chunk from the first serving peer and the second chunk from the second serving peer; and

receive the first chunk from the first serving peer and the second chunk from the second serving peer.

82. A content sharing system, for implementation in a serving peer, to transfer at least a part of a first chunk to a requesting peer, the first chunk being part of a content item, the serving peer being operationally connected to a plurality of peers including the requesting peer via a communications network, the serving peer being associated with a storage arrangement in which the first chunk is stored, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the system comprising:

a metadata module to receive chunk metadata identifying the location of the first chunk based on an identifier in the media stream originally broadcast by the Headend; and

a content transfer module operationally connected to the metadata module, the content transfer module being operative to;

receive a request to transfer the at least part of the first chunk to the requesting peer based on the chunk metadata; and

transfer the at least part of the first chunk to the requesting peer.

83. The system according to claim 82, wherein the content item stored in the storage arrangement of the serving peer was recorded from the media stream broadcast by the Headend.

84. The system according to claim 82, wherein the identifier is based on at least one of the following:

an entitlement control message, a program clock reference, a group of pictures timecode, and an RTS timecode.

85. The system according to claim 82, wherein the content transfer module is operative to transfer the at least part of the first chunk to the requesting peer while the content item is still being received by the serving peer from the Headend.

86. The system according to claim 82, wherein the communications network is an Internet protocol network.

87. The system according to claim 82, wherein the serving peer is associated with a storage arrangement having a subscriber section and an operator section, the subscriber section being operative to store the content item, wherein the system includes a deletion module operative to transfer the content item from the subscriber section to the operator section when a subscriber of the serving peer requests to delete the content item.

88. The system according to claim 87, wherein the content item has a sharing expiration date, the deletion module being operative to delete the content item from the operator section on, or after, the sharing expiration date.

89. A system for enabling sharing of a content item among a plurality of peers, the peers being operationally connected via a communications network, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the system comprising:

a content monitor to create a chunk metadata file which logically divides the content item into a plurality of chunks, such that each of the chunks is identified based on an identifier in the media stream originally broadcast by the Headend, the chunk metadata file being a separate file from the content item.

90. The system according to claim 89, further comprising a server, operationally connected to the content monitor and the peers, to serve the chunk metadata to the peers.

91. The system according to claim 89, wherein the content monitor is operative to forward the chunk metadata for inclusion in the media stream being broadcast by the Headend.

92. A content sharing system for implementation in a serving peer, the serving peer being operationally connected to a plurality of other peers via a communications network, the system comprising:

a content transfer module to transfer content between the serving peer and the other peers; and

a bandwidth allocation module to limit the time availability of the content transfer module to serve the content to the other peers.

93. A content sharing system for implementation in a serving peer being operationally connected to a plurality of other peers via a communications network, the system comprising:

a content transfer module to transfer content between the serving peer and the other peers;

a IPTV service module for receiving an IPTV service via the communications network; and

a bandwidth allocation module to decrease a download bandwidth allocated to the content transfer module when the IPTV service module is receiving the IPTV service.

94. An electronic program guide system, comprising an RSS reader application operative to:

link to an RSS feed having content item information for content items available for sharing among a plurality of peers;

check the RSS feed to see if the feed has new content item information since the last time the RSS feed was checked by the RSS reader;

retrieve the new content item information; and

present the new content item information in an electronic program guide.

95. The system according to claim 94, wherein the content items were previously broadcast by a Headend to the peers.

96. A method for managing access to a content item among a plurality of peers operationally connected via a communications network, access control to the content item being subject to a first business scenario when the content item is received from a broadcast media stream, the method comprising:

determining at least one new business scenario; and

associating the at least one new business scenario to the content item in order to define access control to the content item when the content item is shared among the peers via the communications network.

97. The method according to claim 96, further comprising generating at least one set of entitlement control messages for the content item for the at least one new business scenario.

98. A method for sharing a plurality of content items among a plurality of peers, the peers being operationally connected via a communications network, each of the content items associated with one of a plurality of TV channels, the content items being originally broadcast in a media stream by a Headend, the method comprising:

defining a plurality of different sharing rules, each of the sharing rules describing how an associated one of the content items is allowed to be shared among the peers; and

assigning one of the sharing rules to one of the TV channels and another one of the sharing rules to another one of the TV channels, so that the content items of the one channel are subject to the one sharing rule and the content items of the other channel are subject to the other sharing rule.

99. A content sharing method, for implementation in a requesting peer, to receive at least a part of a chunk from a serving peer, the chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers including the serving peer via a communications network, the serving peer being associated with a storage arrangement in which the chunk is stored, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of peers, the method comprising:

receiving chunk metadata identifying the location of the chunk based on an identifier in the media stream originally broadcast by the Headend;

requesting the at least part of the chunk from the serving peer based on the chunk metadata; and

receiving the at least part of the chunk from the serving peer.

100. A content sharing method, for implementation in a requesting peer, to receive a first chunk from a first serving peer and a second chunk from a second serving peer, the first chunk and the second chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers via a communication network, the peers including the first serving peer and the second serving peer, the first serving peer being associated with a storage arrangement which has a recording including at least part of the content item, the second serving peer being associated with a storage arrangement which has a recording including at least part of the content item, the recording of the first serving peer is different from the recording of the second serving peer based on a bit-to-bit comparison, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the method comprising:

requesting the first chunk from the first serving peer and the second chunk from the second serving peer; and

receiving the first chunk from the first serving peer and the second chunk from the second serving peer.

101. A content sharing method, for implementation in a serving peer, to transfer at least a part of a chunk to a requesting peer, the chunk being part of a content item, the serving peer being operationally connected to a plurality of peers including the requesting peer via a communications network, the serving peer being associated with a storage arrangement in which the chunk is stored, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the method comprising:

receiving chunk metadata identifying the location of the chunk based on an identifier in the media stream originally broadcast by the Headend;

receiving a request to transfer the at least part of the chunk to the requesting peer based on the chunk metadata; and

transferring the at least part of the chunk to the requesting peer.

102. A method for enabling sharing of a content item among a plurality of peers, the peers being operationally connected via a communications network, the content item being media content originally broadcast in a media stream by a Headend to at least some of the plurality of the peers, the method comprising:

receiving the content item; and

creating a chunk metadata file which logically divides the content item into a plurality of chunks, such that each of the chunks is identified based on an identifier in the media stream originally broadcast by the Headend, the chunk metadata file being a separate file from the content item.

103. A content sharing method for implementation in a serving peer being operationally connected to a plurality of other peers via a communications network, the method comprising:

transferring content between the serving peer and the other peers;

receiving an IPTV service via the communications network; and

decreasing a download bandwidth allocated to the content transfer when the IPTV service is being received.

104. An electronic program guide method, comprising:

linking to an RSS feed having content item information for content items available for sharing among a plurality of peers;

checking the RSS feed to see if the feed has new content item information since the last time the RSS feed was checked;

retrieving the new content item information; and

presenting the new content item information in an electronic program guide.