Method for recognizing audio-visual data in transmission networks, in particular internet

• US 20040141495A1
• Filed: 03/22/2004
• Published: 07/22/2004
• Est. Priority Date: 02/27/2001
• Status: Active Grant

• Current Assignee: Digital Audio Encoding Systems, LLC (Equitable IP Corporation)
• Original Assignee: MAYAH Communications GmbH
• Inventors: Wiese, Detlef, Rimkus, Joerg, Plenge, Georg
• Granted Patent: US 7,900,049 B2
• Time in Patent Office: Days
• US Class Current: 370/353
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/8113 comprising music, e.g. song in MP3 format

Abstract

The present invention regards a method for recognizing an audio and/or visual format in a digital transmission network, in particular the Internet, wherein formats consist of a quasi-continuous or divided in packets sequence of data, and all or parts of said sequence of data are analyzed for the presence of one or more bit patterns and a notice is given in the case that from an analyzed bit pattern a determined format can be recognized.

Claims

1. Method for recognizing and audio and/or visual format in a digital transmission network, namely in Internet, wherein formats consist of a quasi continuous or divided in packets sequence of data, and all or part of said sequence of data are analyzed for the presence of one or more bit patterns and a notice is given in the case that from an analyzed bit pattern a determined format can be recognized and that the recognizing of a determined bit pattern sequence of data is performed by means of analysis of a synchronizing word (sync-word).

2. Method for recognizing a format according to claim 1, characterized in that determined bit patterns correspond to determined uses, for instance MP3, MPEG 4 Video.

3. Method for recognizing a format according to claim 1, characterized in that the address of the sender of the analyzed data stream and the analyzed sequence of data are memorized, if the sequence of data shows a determined data format.

4. Method according to any one of the preceding claims, characterized in that the memorized sender addresses are stored in a first list and said list is compared with a second list, wherein there are stored the addresses of allowed (legal) addresses.

5. Method according to any one of the preceding claims, characterized in that the transmission of the sequence of data is interrupted, if it has been established that the address of the sender is not contained in the list of the allowed addresses.

6. Method according to any one of the preceding claims, characterized in that the address of the receiver of the sequence of data (data stream) is memorized and preferably the duration of the transmission is calculated and memorized.

7. Method according to any one of the preceding claims, characterized in that the format to be recognized is MP3, mp3 pro, AAC, AAC Plus, MPEG 1 or 2, Layer 2 or Layer 3 or MPEG 2,5 Layer 3.

8. Method according to any one of the preceding claims, characterized in that the recognizing of a determined bit pattern is additionally performed through a plausibility verification on the basis of the distance between sync-words, which is calculated on the basis of the available frame lengths of a sequence of data.

9. Method according to any one of the preceding claims, characterized in that the transmitted contents and the proprietor/composer/author/writer is memorized.

10. Method according to any one of the preceding claims, characterized in that all the found data are table organized and memorized.

11. Method according to any one of the preceding claims, characterized in that a virtual Internet user (virtual receiver) is simulated, who performs the complete decoding and memorizing of the audio-visual data.

12. Method according to any one of the preceding claims, characterized in that known method are additionally used for locking the information before unlocking.

13. Method according to any one of the preceding claims, characterized in that the analysis takes place at the Internet server.

15. Method according to any one of the preceding claims, characterized in that the method is realized by means of a plug-in card for the Internet-router.

16. Method according to any one of the preceding claims, characterized in that at the router of different Internet servers the prepared lists are continuously compared one to the other and/,or updated or exchanged.

17. Method according to any one of the preceding claims, characterized in that for analyzing the bit patterns neither decoding is performed nor a decoder is employed.

18. Method according to claim 1, characterized in that the recognizing of a determined bit pattern in the sequence of data is performed through the analysis of Header-information, e.g. ID, Layer, Protection-bit, Bitrate-index, etc.

20. Apparatus for recognizing an audio and/or visual format in a digital transmission network, namely the Internet, implementing the method as defined in one or more of the preceding claims.

21. System for recognizing an audio and/or visual format in a digital transmission network, namely the Internet, implementing the method as defined in one or more of the preceding claims.

14. Method according to claim 14, characterized in that the analysis is made at the Internet server by means of a personal computer.

19. Method for recognizing and audio and/or visual format in a digital transmission network, namely in Internet, wherein formats consist of a quasi continuous or divided in packets sequence of data, and all or part of said sequence of data are analyzed for the presence of one or more bit patterns and a notice is given in the case that from an analyzed bit pattern a determined format can be recognized wherein all or parts of said sequence of data are insulated from the bit transmission layer. (Layer 1) and are further analyzed.