Granted Patent B2

US 7,035,867 · App. 10/002,290 · Granted Apr 25, 2006

Abstract

Claims (43)

1. A computer implemented method of eliminating a redundant video file, said method comprising:

obtaining a first frequency representation of a selected video file;

accessing a first unknown file, wherein the entire data set of said unknown file is stored in computer-readable storage media;

obtaining a second frequency representation of said unknown file;

comparing said first frequency representation with said second frequency representation; and

determining from said comparing whether said unknown file is said selected video file;

eliminating the entire data set of said unknown file from said computer-readable storage media as a redundant file.

2. The method as described in claim 1 wherein said obtaining said first frequency representation of said desired video file comprises:

performing a Fast Fourier Transform algorithm.

3. The method as described in claim 1 wherein said obtaining said first frequency representation comprises performing a Discrete Fourier Transform.

4. The method as described in claim 1 wherein said comparing said first frequency representation with said second frequency representation comprises:

comparing a range of frequencies of said first and second frequency representations.

5. The method as described in claim 1 and further comprising:

decoding said unknown file.

6. A computer implemented method of determining redundancies in a content object directory, said method comprising:

accessing a plurality of files stored on a memory, wherein each of said files is configured so as to be identified by a fingerprint;

for each of said files, determining said fingerprint;

establishing a redundancy standard so as to indicate whether any two of said fingerprints of said files having non-identical fingerprints are redundant of one another, wherein a user determines a criteria to be used for the standard from a set of different characteristics;

comparing said fingerprints determined for each of said files;

determining redundant files based upon said comparing said fingerprints and said redundancy standard.

7. The method as described in claim 6 and further comprising:

deleting at least one redundant file from said memory.

8. The method as described in claim 6 and further comprising:

utilizing a Fast Fourier Transform algorithm to compute said fingerprint.

9. The method as described in claim 6 and further comprising:

utilizing a watermark as said fingerprint.

10. The method as described in claim 6 and further comprising:

utilizing cyclical redundancy check data as said fingerprint.

11. The method as described in claim 6 wherein said accessing a plurality of files comprises:

accessing a plurality of files comprising video data.

12. The method as described in claim 6 wherein said accessing a plurality of files comprises:

accessing a plurality of files comprising audio data.

13. The method as described in claim 6 wherein said establishing a redundancy standard comprises:

determining a range of frequencies in a pattern of frequencies from a Fast Fourier Transform for comparison of said fingerprints.

14. The method as described in claim 6 and further comprising:

appending a fingerprint as metadata to at least one directory listing.

15. The method as described in claim 6 and further comprising:

cataloging in a database said fingerprint with the file from which said fingerprint was generated.

16. The method as described in claim 6 and further comprising:

obtaining said plurality of files from a caching server utilized as part of a video streaming network.

17. The method as described in claim 6 and further comprising:

providing a master database upon which video files are stored for video distribution; and

wherein said accessing a plurality of files comprises accessing a plurality of video filed stored on said master database.

Assignments (8)