System for preparing data

• US 8,635,199 B2
• Filed: 11/18/2004
• Issued: 01/21/2014
• Est. Priority Date: 12/18/2003
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Aires, Kevin B., Hughes, Ian, Shaw, Darren M.
• Primary Examiner(s): Mofiz, Apu
• Assistant Examiner(s): NGUYEN, THU N
• Application Number:
  US10/992,489
• Publication Number:
  US 20050138053A1
• Time in Patent Office: 3,351 Days
• Field of Search: 707/203
• US Class Current: 707/695
• CPC Class Codes: G06F 16/258 Data format conversion from or to a database
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70

Abstract

A system for preparing data, operable with a server computer system having a store for a first file comprising data (e.g. audio data) and a plurality of sets of lossy data generated from the data in the first file. The system comprises a requesting component for requesting at least two sets of the plurality of sets of lossy data; a receiving component for receiving the at least two sets; and a combining component for combining the at least two sets in order to generate a second file. The data in the second file is of reduced lossiness with respect to the data in the first file.

Claims

1. A system for preparing data, operable with a server computer system having a store for a first file comprising data and a plurality of sets of lossy data generated from the data in the first file, the system comprising:

a requesting component for requesting at least two sets of the plurality of sets of lossy data, wherein each of the plurality of sets of lossy data is a stand alone, fully functioning file, providing a lossy version of the first file;

a first receiving component for receiving the at least two sets; and

a combining component for combining the at least two sets of lossy data, in order to generate a second file comprising data of reduced lossiness with respect to the data in the first file, wherein, when only two sets of lossy data are initially generated from the first file, said combining provides a lossless recreation of the first file.

2. A system as claimed in claim 1, further comprising a rendering component for rendering the second file.

3. A system as claimed in claim 1, wherein each set of the plurality of sets of lossy data are combined using metadata within the sets of lossy data from among a base address, an offset, and a spacing between portions of the lossy data, said offset and spacing metadata being utilized by the combining component to correctly position data in the two sets of lossy data relative to each other to generate the less lossy second file.

4. A system as claimed in claim 1, wherein the combining component further comprises means for using information associated with the plurality of sets, wherein the information represents at least one of:

a number of the plurality of sets to be combined and identifiers associated with the sets from among the plurality of sets to be combined.

5. A system as claimed in claim 1, wherein the data in the first file comprises multimedia data and each set of lossy data represents a lossy version of the entire scope of original data within the first file with a lower associated quality and combining the two sets of lossy data provides a higher quality representation of the first file.

6. A system as claimed in claim 1, wherein the combining component is invoked in response to a proximity of a second client system, wherein when the client system and the second client system, which have received different ones of the sets of lossy data, move into a communication proximity of each other:

a sending component of the client system sends the second file to the second client system and receives one or more different lossy files from the second client system; and

the combining component combines the received one or more different lossy files with the second file to generate a third file that is less lossy than the second file.

7. A system as claimed in claim 1, further comprising:

a server computer system having;

a lossy data generating component for reading the data in the first file and separating the data in the first file into the plurality of sets of lossy data;

a second receiving component for receiving a request for the at least two sets from the system; and

a sending component, in response to receiving the request, for sending the at least two sets to the system.

8. A system as claimed in claim 7, wherein the server computer system further comprises a generating component for generating metadata associated with the plurality of sets of lossy data, the metadata representing at least one of a base address, an offset, a spacing between portions of the lossy data, wherein said metadata is transferred within the at least two sets of lossy data during said sending and is utilized to correctly combine the two sets of lossy data.

17. A system as claimed in claim 1, wherein:

said receiving component stores each received set of lossy data; and

when said requesting component subsequently requests a next set of lossy data while at least one existing set of lossy data exists on the client system, said combining component combines the next set of lossy data with the existing set of lossy data, wherein when the at least two previously received sets are combined as the second file on the client system, said combining component combines the next set of lossy data to the second file to generate a third, even less lossy file than the second file.

18. A system as claimed in claim 7, wherein:

the lossy data generating component of the server computer system generates and displays icons representing the sets of lossy data;

the second receiving component detects a selection of one or more of the icons representing specific ones of the sets of lossy data, retrieves the one or more sets of lossy data whose icons are selected and semis the one or more sets to a client system from which the one or more icons are selected.

19. A system as claimed in claim 7, wherein:

the lossy data generating component of the server computer system generates and displays an icon representing the first file; and

the second receiving component detects a selection of the icon representing the first file, retrieves the first file, and sends the first file to the client system.

20. A system as claimed in claim 7, wherein said server further comprises:

a load balancing component that balances a distribution of the plurality of sets of lossy data among multiple requesting clients, wherein multiple requests for a lossy file receive a different one of the lossy sets of data to avoid serialization of file access to the sets of lossy data.

9. A method of preparing data for use with a server computer system having a store for a first file comprising data and a plurality of sets of lossy data generated from the data in the first file, the method comprising the steps of:

requesting at least two sets of the plurality of sets of lossy data generated from the data of the first file, wherein each of the plurality of sets of lossy data is a stand alone, fully functioning file, providing a lossy version of the first file;

receiving the at least two sets; and

combining the at least two sets, in order to generate a second file comprising data of reduced lossiness with respect to the data in the first file;

wherein when said requesting includes subsequently requesting a next set of lossy data while at least one existing set of lossy data exists on the client system, said combining combines the next set of lossy data with the existing set of lossy data, wherein when at least two previously received sets are combined as the second file on the client system, said combining component combines the next set of lossy data to the second file to generate a third, even less lossy file than the second file.

14. A method as claimed in claim 9, wherein:

each set of the plurality of sets of lossy data are combined using metadata within the sets of lossy data from among a base address, an offset, and a spacing between portions of the lossy data, said offset and spacing metadata being utilized by the combining to correctly position data in the two sets of lossy data relative to each other to generate the less lossy second file; and

said combining utilizes information associated with the plurality of sets, wherein the information represents at least one of;

a number of the plurality of sets to be combined and identifiers associated with the sets from among the plurality of sets to be combined.

15. A method as claimed in claim 9, wherein the data in the first file comprises multimedia data and each set of lossy data represents a lossy version of the entire scope of original data within the first file with a lower associated quality and combining the two sets of lossy data provides a higher quality representation of the first file.

16. A method as claimed in claim 9, wherein:

the combining is invoked in response to a proximity of a second client system, wherein, when the client system and the second client system, which have received different ones of the sets of lossy data, move into a communication proximity of each other, said method further comprises;

sending the second file to the second client system;

receiving one or more different lossy files from the second client system; and

combining the received one or more different lossy files with the second file to generate a third file that is less lossy than the second file.

10. A computer program product comprising;

a non-transitory computer readable medium; and

program code on the non-transitory computer readable medium adapted to perform the following

functions when said program code is run on a computer;

requesting at least two sets of the plurality of sets of lossy data generated from data in a first file, wherein each of the plurality of sets of lossy data is a stand alone, fully functioning file, providing a lossy version of the first file;

receiving the at least two sets; and

combining the at least two sets, in order to generate a second file comprising data of reduced lossiness with respect to the data in the first file, said combining provided to prepare data for use with a server computer system having a store for the first file;

wherein when said requesting includes subsequently requesting a next set of lossy data while at least one existing set of lossy data exists on the client system, said combining combines the next set of lossy data with the existing set of lossy data, wherein when at least two previously received sets are combined as the second file on the client system, said combining component combines the next set of lossy data to the second file to generate a third, even less lossy file than the second file.

11. A computer program product as claimed in claim 10, wherein:

each set of the plurality of sets of lossy data are combined using metadata within the sets of lossy data from among a base address, an offset, and a spacing between portions of the lossy data, said offset and spacing metadata being utilized by the combining to correctly position data in the two sets of lossy data relative to each other to generate the less lossy second file; and

said code for combining utilizes information associated with the plurality of sets, wherein the information represents at least one of;

a number of the plurality of sets to be combined and identifiers associated with the sets from among the plurality of sets to be combined.

12. A computer program product as claimed in claim 10, wherein the data in the first file comprises multimedia data and each set of lossy data represents a lossy version of the entire scope of original data within the first file with a lower associated quality and said code for combining the two sets of lossy data provides a higher quality representation of the first file.

13. A computer program product as claimed in claim 10, wherein:

the combining is invoked in response to a proximity of a second client system, wherein, when the client system and the second client system, which have received different ones of the sets of lossy data, move into a communication proximity of each other, said program code further comprises code for;

sending the second file to the second client system;

receiving one or more different lossy files from the second client system; and

combining the received one or more different lossy files with the second file to generate a third file that is less lossy than the second file.