Method and device for processing digital data with a unique identifier

• US 8,782,116 B2
• Filed: 10/08/2004
• Issued: 07/15/2014
• Est. Priority Date: 10/09/2003
• Status: Expired due to Fees

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Nassor, Eric, Donescu, Ioana, Le Leannec, Fabrice
• Primary Examiner(s): Beharry, Noel
• Assistant Examiner(s): MUSA, ABDELNABI O
• Application Number:
  US10/962,141
• Publication Number:
  US 20050114386A1
• Time in Patent Office: 3,567 Days
• Field of Search: 709/201, 709/200, 709/203, 709/204, 709/205, 709/202
• US Class Current: 709/201
• CPC Class Codes: G06F 16/51 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: H04N 19/63 using sub-band based transform, e.g. wavelets

Abstract

The invention relates to a method of processing digital data constituting a signal in a distributed communication network comprising a plurality of communication apparatuses, the signal being identified by a unique identifier (ID), characterized in that the method comprises the following steps:

• • storing one or more parts of the signal, termed exploitable parts of the signal, at one at least given address of a memory location and in a format readable by an application,
  • associating the unique identifier of the signal with each exploitable part of the signal,
  • storing in at least one communication apparatus a data structure establishing a link between each exploitable part of the signal and the unique identifier of that signal.

Claims

1. A method of processing digital data constituting a signal in a distributed communication network comprising a plurality of communication apparatuses, the signal being identified by a unique identifier (ID), wherein the method comprises the following steps:

storing in a first cache memory location of a communication apparatus the signal;

storing in one or more second memory locations of the communication apparatus distinct from the first cache memory location one or more exploitable parts of the signal in a format readable by an application, so that each exploitable part of the signal is directly exploitable by a user, wherein at least one of said exploitable parts of the signal comprises less than the entirety of the signal, and wherein the one or more second memory locations are chosen by the user and the exploitable part of the signal is stored at an arbitrary address of the second memory location chosen by the user;

associating the unique identifier of the signal with each respective stored exploitable part of the signal stored in the one or more second memory locations; and

storing in at least one communication apparatus a data structure establishing a link between each respective exploitable part of the signal stored in the one or more second memory locations and the unique identifier of the signal stored in the first cache memory location, wherein the data structure also establishes a link between each exploitable part of the signal and an index representing the data present in the part considered,

and the method further comprises the following steps performed by the communication apparatus or apparatuses in which the one or more exploitable parts of the signal are stored;

a prior reception of at least some data constituting the signal stored in the first cache memory; and

managing, after the prior reception, memory locations, wherein data received that is stored in the first cache memory location, which are determined to be contained in the exploitable part or parts of the signal stored respectively in the one or more second memory locations chosen by the user, are deleted from the first cache memory location in a case where the data received and the exploitable part or parts are in the same format, or in a case where the data received and the exploitable part or parts are not in the same format but can be passed from the format of the exploitable part or parts to the format of the data received without a loss of information.

2. A method according to claim 1, wherein the data structure takes the form of a location table for all the exploitable parts of the signal having the same unique identifier of the signal.

3. A method according to claim 1, wherein the data structure also establishes a link between the unique identifier of the signal and the addresses in memory of the one or more second memory locations where the different exploitable parts of the signal are stored.

4. A method according to claim 1, wherein, for each exploitable part of the signal, the index describes sub-parts of data constituting the part considered.

5. A method according to claim 1, wherein the data structure establishes a link between the unique identifier of the signal and the addresses in memory of the indices of the different exploitable parts of the signal.

6. A method according to claim 1, wherein each index specific to a given exploitable part of the signal corresponds to a data structure in table form comprising an identification of the data present in the part considered and respective addresses in memory enabling such data to be retrieved in said part stored in memory in the one or more second memory locations.

7. A method according to claim 1, further comprising a step of selecting at least one format in which each exploitable part of the signal is stored.

8. A method according to claim 1, further comprising a step of transferring over the network sub-parts of data constituting at least one exploitable part of the signal.

9. A method according to claim 8, wherein the step of associating the unique identifier of the signal with an exploitable part of the signal is performed by the communication apparatus or apparatuses receiving all or part of the data constituting that part.

10. A method according to claim 1, wherein the step of associating the unique identifier of the signal corresponds to a step of inserting that identifier in an exploitable part of the signal.

11. A method according to claim 10, wherein the unique identifier is either inserted in a header of the exploitable parts of the signal or in the content of the exploitable parts of the signal.

12. A method according to claim 1, wherein the step of storing the data structure in memory is performed by the communication apparatus or apparatuses receiving all or part of the data constituting an exploitable part of the signal.

13. A method according to claim 1, further comprising a step of obtaining, by at least one communication apparatus receiving all or part of the data constituting an exploitable part of the signal, at least one data descriptor representing the data present on one or more other communication apparatuses of the network.

14. A method according to claim 1, further comprising a step, performed on a communication apparatus on which one or more exploitable parts of the signal are stored, of viewing all or part of each exploitable part of the stored signal.

15. A method according to claim 1, further comprising a step, performed on a communication apparatus on which one or more exploitable parts of the signal are stored, of viewing information specific to each stored part and adapted to inform a user of the state of the part considered.

16. A method according to claim 15, wherein the state of the exploitable signal part considered represents the availability of other data constituting the signal.

17. A method according to claim 15, wherein the state of the exploitable signal part considered represents the possibility of sharing that part with one or more other communication apparatuses.

18. A method according to one of claims 15 to 17, wherein the information specific to each stored part is in particular obtained from the stored data structure.

19. A method according to claim 1, further comprising a step, performed on a communication apparatus on which one or more exploitable parts of the signal are stored, of viewing commands enabling a user, on the basis of an exploitable part of the signal stored in memory in the one or more second memory locations, of performing different operations specific to the sharing of the part considered with one or more other communication apparatuses, to complete the part considered with supplementary data or to share the part considered with one or more other communication apparatuses.

20. A method according to claim 1, further comprising a prior step of generating the unique identifier of the signal.

21. A method according to claim 20, wherein the step of generating the unique identifier of the signal is performed by the communication apparatus transferring all or part of the data constituting an exploitable part of the signal to one or more other communication apparatuses.

22. A method according to claim 1, wherein the digital signal is an image signal.

23. An non-transitory information storage means which can be read by a computer or a microprocessor containing computer-executable code instructions of a computer program for executing the steps of the method according to claim 1.

24. A method according to claim 1, wherein a signature calculated from the exploitable parts of the signal is associated with the identifier in a table.

25. A method according to claim 1, wherein the arbitrary address of a memory location is provided by a user.

26. A device for processing digital data constituting a signal in a distributed communication network comprising a plurality of communication apparatuses, the signal being identified by a unique identifier (ID), wherein the device comprises:

means for storing in a first cache memory location of a communication apparatus the signal and for storing in one or more second memory locations of the communication apparatus distinct from the first cache memory location one or more exploitable parts of the signal in a format readable by an application, so that each exploitable part of the signal is directly exploitable by a user, wherein at least one of said exploitable parts of the signal comprises less than the entirety of the signal, wherein the one or more second memory locations are chosen by the user and the exploitable part of the signal is stored at an arbitrary address of the second memory location chosen by the user;

means for associating the unique identifier of the signal with each respective stored exploitable part of the signal stored in the one or more second memory locations;

means for storing in at least one communication apparatus a data structure establishing a link between each respective exploitable part of the signal stored in the one or more second memory locations and the unique identifier of the signal stored in the first cache memory location, wherein the data structure also establishes a link between each exploitable part of the signal and an index representing the data present in the part considered;

and further comprising in the communication apparatus or apparatuses in which the one or more exploitable parts of the signal are stored;

means for a prior reception of at least some data constituting the signal stored in the first cache memory; and

means for managing, after the prior reception, memory locations, wherein data received that is stored in the first cache memory location, which are determined to be contained in the exploitable part or parts of the signal stored respectively in the one or more second memory locations chosen by the user, are deleted from the first cache memory location in a case where the data received and the exploitable part or parts are in the same format, or in a case where the data received and the exploitable part or parts are not in the same format but can be passed from the format of the exploitable part or parts to the format of the data received without a loss of information.

27. A device according to claim 26, wherein the data structure takes the form of a location table for all the exploitable parts of the signal having the same unique identifier of the signal.

28. A device according to claim 26, further comprising means for selecting at least one format in which each exploitable part of the signal is stored.

29. A device according to claim 26, further comprising means for transferring over the network the sub-parts of data constituting at least one exploitable part of the signal.

30. A device according to claim 26, further comprising means for viewing all or part of each exploitable part of the signal stored on a communication apparatus, said means forming part of a communication apparatus in which one or more exploitable parts of the signal are stored.

31. A device according to claim 26, further comprising means for viewing information specific to each stored part and adapted to inform a user of the state of the part considered, said means forming part of a communication apparatus on which one or more exploitable parts of the signal are stored.

32. A device according to claim 31, wherein the state of the exploitable signal part considered represents the availability of other data constituting the signal.

33. A device according to claim 31, wherein the state of the exploitable signal part considered represents the possibility of sharing that part with one or more other communication apparatuses.

34. A device according to claim 26 further comprising means for viewing commands enabling a user, on the basis of an exploitable part of the signal stored in memory in the one or more second memory locations, to perform different operations specific to the sharing of the part considered with one or more other communication apparatuses, to complete the part considered with supplementary data or to share the part considered with one or more other communication apparatuses, said means forming part of a communication apparatus on which one or more exploitable parts of the signal are stored.

35. A device according to claim 26, further comprising means for generating the unique identifier of the signal.

36. A communication apparatus comprising:

a device according to claim 26

storage means for storing the exploitable parts; and

an interface to the communication network.

37. A device according to claim 26, wherein the unique identifier is either inserted in a header of the exploitable parts of the signal or in the content of the exploitable parts of the signal.

38. A device according to claim 26, wherein a signature calculated from the exploitable parts of the signal is associated with the identifier in a table.

39. A device according to claim 26, wherein the arbitrary address of a memory location is provided by a user.