Universal object delivery and template-based file delivery

• US 9,294,226 B2
• Filed: 01/29/2013
• Issued: 03/22/2016
• Est. Priority Date: 03/26/2012
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Luby, Michael George, Fall, Kevin Roland, Stockhammer, Thomas
• Primary Examiner(s): Blair, April Y
• Assistant Examiner(s): GANDHI, DIPAKKUMAR B
• Application Number:
  US13/753,442
• Publication Number:
  US 20130254634A1
• Time in Patent Office: 1,148 Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 12/1881 with schedule organisation, e.g. priority, sequence management
• CPC Class Codes: H04L 65/00 Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]

Abstract

Data objects can be delivered over a network using a file delivery system and universal object delivery and template-based file delivery. This might be done by forming source data into a sequence of data objects represented by symbols in packets, sending those to receivers on request, wherein a transmitter obtains a template file delivery table with delivery metadata for the data objects, and constructing a first transmission object identifier for a data object based on a transmission object identifier construction rule described in the template file delivery table. A receiver might receive packets, extract a second transmission object identifier, associate encoded symbols comprising the received data packet with the data object if the first transmission object identifier and the second transmission object identifier identify the same data object, and recover, at least approximately, the source data for the data object based on the encoded symbols associated with the data object.

Claims

1. A method of generating a template file delivery table for a sequence of data objects, wherein source data of one or more data objects in the sequence is represented by encoded symbols in packets such that the source data is recoverable, at least approximately, from the encoded symbols, the method comprising:

generating data in a structured form, including metadata;

generating a template file delivery table that comprises the metadata for the sequence of data objects, the sequence of data objects comprising a plurality of related data objects, wherein the template file delivery table includes a set of common object transmission information that is common for the plurality of related data objects so that a separate file delivery table is not to be sent for each of the plurality of related data; and

transmitting the template file delivery table over a network to a client device.

2. A method of delivering a sequence of data objects from an electronic device or system over a network to a client device, wherein source data of the sequence of data objects is represented by encoded symbols in packets such that the source data is recoverable, at least approximately, from the encoded symbols, the method comprising:

obtaining a template file delivery table that comprises delivery metadata for the sequence of data objects, the sequence of data objects comprising a plurality of related data objects, wherein the template file delivery table includes a set of common object transmission information that is common for the plurality of related data objects so that a separate file delivery table is not to be sent for each of the plurality of related data objects;

constructing a first transmission object identifier for a data object from the sequence of data objects based on a transmission object identifier construction rule described in the template file delivery table for the sequence of data objects;

receiving one or more data packets;

extracting a second transmission object identifier from a received data packet;

associating encoded symbols comprising the received data packet with the data object if the first transmission object identifier and the second transmission object identifier identify the same data object; and

recovering, at least approximately, the source data for the data object based on the encoded symbols associated with the data object.

3. The method of claim 2, wherein a start transmission time and end transmission time for the data object are constructed for the sequence of data objects described in the template file delivery table, and wherein the client device receives data packets for the data object at times that are between the start transmission time and end transmission time.

4. The method of claim 2, wherein more than one data object is recovered from the sequence of data objects.

5. The method of claim 2, wherein more than one sequence of data objects is described within a same session in the template file delivery table.

6. The method of claim 2, wherein the template file delivery table also comprises information that relates how the sequence of data objects are associated with segments of a representation described in a DASH media presentation description (MPD).

7. The method of claim 2, wherein the set of common object transmission information includes FEC object transmission information parameters that are common to all related data objects in the sequence of data objects.

8. The method of claim 2, wherein the template file delivery table comprises metadata delivery information for objects within the sequence of data objects that do not exist at the time that the template file delivery table is obtained by the client device.

9. The method of claim 2, wherein the template file delivery table includes transmission object identifiers for one or more objects, wherein the transmission object identifiers described within the template file delivery table for all objects are unique.

10. The method of claim 9, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects are unique.

11. The method of claim 9, wherein the transmission object identifiers for all objects with overlapping transmission times are unique, and wherein a transmission object identifier, a start transmission time, and an end transmission time of each object in the sequence of data objects is described within the template file delivery table.

12. The method of claim 11, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects with overlapping transmission times are unique.

13. A method of delivering a sequence of data objects from an electronic device or system over a network to a client device, wherein source data of the sequence of data objects is represented by encoded symbols in packets such that the source data is recoverable, at least approximately, from the encoded symbols, the method comprising:

obtaining a template file delivery table that comprises delivery metadata for the sequence of data objects, the sequence of data objects comprising a plurality of related data objects, wherein the template file delivery table includes a set of common object transmission information that is common for the plurality of related data objects so that a separate file delivery table is not to be sent for each of the plurality of related data objects;

receiving one or more data packets;

extracting a transmission object identifier from a received data packet;

associating encoded symbols comprising the received data packet with a data object from the sequence of data objects that corresponds to the transmission object identifier; and

recovering, at least approximately, source data for the data object based on the encoded symbols associated with the data object.

14. The method of claim 13, wherein a start transmission time and end transmission time for the data object are constructed for the sequence of data objects described in the template file delivery table, and wherein the client device receives data packets for the data object at times that are between the start transmission time and end transmission time.

15. The method of claim 13, wherein more than one data object is recovered from the sequence of data objects.

16. The method of claim 13, wherein more than one sequence of data objects is described within a same session in the template file delivery table.

17. The method of claim 13, wherein the template file delivery table also comprises information that relates how the sequence of data objects are associated with segments of a representation described in a DASH media presentation description (MPD).

18. The method of claim 13, wherein the set of common object transmission information includes FEC object transmission information parameters that are common to all related data objects in the sequence of data objects.

19. The method of claim 13, wherein the template file delivery table comprises metadata delivery information for objects within the sequence of data objects that do not exist at the time that the template file delivery table is obtained by the client device.

20. The method of claim 13, wherein the template file delivery table includes transmission object identifiers for one or more objects, wherein the transmission object identifiers described within the template file delivery table for all objects are unique.

21. The method of claim 20, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects are unique.

22. The method of claim 20, wherein the transmission object identifiers for all objects with overlapping transmission times are unique, and wherein a transmission object identifier, a start transmission time, and an end transmission time of each object in the sequence of data objects is described within the template file delivery table.

23. The method of claim 22, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects with overlapping transmission times are unique.

24. An object delivery server for delivering a sequence of data objects over a network to one or more client devices, wherein source data of the sequence of data objects is represented by encoded symbols in packets such that the source data is recoverable, at least approximately, from the encoded symbols, the object delivery server comprising:

storage for a template file delivery table comprising delivery metadata for the sequence of data objects, the sequence of data objects comprising a plurality of related data objects, wherein the template file delivery table includes a set of common object transmission information that is common for the plurality of related data objects so that a separate file delivery table is not to be sent for each of the plurality of related data objects;

a packet constructor that constructs a first transmission object identifier for a data object from the sequence of data objects based on a transmission object identifier construction rule described in the template file delivery table for the sequence of data objects, and constructs a second transmission object identifier for a different data object from the sequence of data objects based on a transmission object identifier construction rule described in the template file delivery table for the sequence of data objects; and

a packet output that outputs one or more data packets as constructed by the packet constructor for the data object and the different data object, wherein data objects are encoded with transmission object identifiers.

25. The object delivery server of claim 24, the data objects further comprising a start transmission time and end transmission time for the data object constructed for the sequence of data objects described in the template file delivery table, such that the one or more client device receives data packets for the data object at times that are between the start transmission time and end transmission time.

26. The object delivery server of claim 24, wherein more than one sequence of data objects is described within a same session in the template file delivery table.

27. The object delivery server of claim 24, wherein the template file delivery table also comprises information that relates how the sequence of data objects are associated with segments of a representation described in a DASH media presentation description (MPD).

28. The object delivery server of claim 24, wherein the set of common object transmission information includes FEC object transmission information parameters that are common to all related data objects in the sequence of data objects.

29. The object delivery server of claim 24, wherein the template file delivery table includes transmission object identifiers for one or more objects, wherein the transmission object identifiers described within the template file delivery table for all objects are unique.

30. The object delivery server of claim 29, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects are unique.

31. The object delivery server of claim 29, wherein the transmission object identifiers for all objects with overlapping transmission times are unique, and wherein a transmission object identifiers and the start transmission time, and an end transmission time of each object in the sequence of data objects is described within the template file delivery table.

32. The object delivery server of claim 31, wherein there are at least two sequences of objects described within a same delivery session within the template file delivery table and the transmission object identifiers for all objects with overlapping transmission times are unique.