公开(公告)号：GB2362789A

公开(公告)日：2001-11-28

申请号：GB0028316

申请日：2000-11-21

Applicant: IBM

Inventor： BRUNHEROTO JOSE R ,  LAEMEN FRANS ,  NOGIMA JULIO ,  ANZICK WILLIAM J ,  SCHAFFA FRANK ANDRE

IPC: G06K9/00 ,  H04N7/50 ,  H04N21/235 ,  H04N21/435 ,  H04N21/81 ,  H04N21/84

Abstract: A system and method for enabling real-time searching of patterns over a shared medium including the capability of simultaneously searching multiple logical streams over the shared medium. Patterns found are reported to the host system using some pre-assigned messages. One particular application of this invention is to search an MPEG-2 program stream, indicating the points (e.g., start-codes) where a new picture starts.

公开(公告)号：GB2363295B

公开(公告)日：2003-12-31

申请号：GB0028437

申请日：2000-11-22

Applicant: IBM

Inventor： BRUNHEROTO JOSE R ,  LAEMEN FRANS ,  NOGIMA JULIO ,  SCHAFFA FRANK ANDRE ,  ANZICK WILLIAM J

IPC: H04N21/236 ,  H04N21/2365 ,  H04N21/434 ,  H04J3/24

Abstract: A system and method for re-mapping the Packet Identifier (PID)'s for a set of MPEG-2 single program streams prior to multiplexing onto one multi-program transport stream. The system eliminates any ambiguity when generating the multiplexed transport stream in 10 order to avoid PID conflicts when multiplexing several single programs containing non-unique PID values. The system includes a mechanism to assign new PID values, in such a way that it ensures that all new PID's are unique for the multiplexed transport stream. Furthermore, it performs this re-mapping in real-time as the packets are being transmitted over the multi-program transport stream.

公开(公告)号：DE10129635A1

公开(公告)日：2002-01-03

申请号：DE10129635

申请日：2001-06-20

Applicant: IBM

Inventor： BRUNHEROTO JOSE R ,  LEE PETER S ,  SCHAFFA FRANK A ,  HSIAO ERIC

IPC: H04N17/00 ,  H04N7/025 ,  H04N7/16 ,  H04N7/64

Abstract: The method involves embedding a signature in each frame of the digital video material, by a program control device in a source apparatus, e.g. using a hash algorithm, and/or by encrypting a meta-stream. The play statistics for the digital video material are determined based on the signature, by a program control device in the player. Independent claims are also included for: (a) a system for automatically monitoring the service quality of video material, (b) a method for performing automatic monitoring.

公开(公告)号：GB2362789B

公开(公告)日：2004-03-24

申请号：GB0028316

申请日：2000-11-21

Applicant: IBM

Inventor： BRUNHEROTO JOSE R ,  LAEMEN FRANS ,  NOGIMA JULIO ,  ANZICK WILLIAM J ,  SCHAFFA FRANK ANDRE

IPC: G06K9/00 ,  H04N7/50 ,  H04N21/235 ,  H04N21/435 ,  H04N21/81 ,  H04N21/84

Abstract: A system and method for enabling real-time searching of patterns over a shared media including the capability of simultaneously searching multiple logical streams over the shared media. Patterns found are reported to the host system using some pre-assigned messages. One particular application of this invention is to search an MPEG-2 program stream, indicating the points (e.g., start-codes) where a new picture starts.

公开(公告)号：GB2363295A

公开(公告)日：2001-12-12

申请号：GB0028437

申请日：2000-11-22

Applicant: IBM

Inventor： BRUNHEROTO JOSE R ,  LAEMEN FRANS ,  NOGIMA JULIO ,  SCHAFFA FRANK ANDRE ,  ANZICK WILLIAM J

IPC: H04N21/236 ,  H04N21/2365 ,  H04N21/434 ,  H04J3/24

Abstract: In order to avoid Packet Identifier (PID) conflicts in multiplexed MPEG-2 program streams, the PID's are re-mapped, in real-time, with unique values, by use of look-up tables. In operation, each program stream transport packet contains a PID value and each program stream has an associated stream identifier (eg queue ID, QID). The PID 11 is used to index a first table 10 for generating an offset value 13. The offset value is then used to address a region 22 of a second table which contains a plurality of new PID values capable of being mapped to the original PID value. The stream identifier (QID) is used to index this region to provide the new PID value 25 which is subsequently exchanged for the original PID.