公开(公告)号：GB2490068A

公开(公告)日：2012-10-17

申请号：GB201213200

申请日：2010-12-07

Applicant: IBM

Inventor： LI TIANCHAO ,  DRAESE OLIVER ,  BENDEL PETER ,  HRLE NAMIK

IPC: H03M7/30

Abstract: Generation of occurrence data of data values is discussed, for enabling encoding of a data set. Occurrences of data values in a current data batch are determined. Occurrence count information for at most a first number (M) of most frequent data values in the current data batch are determined, the occurrence count information identifying the most frequent data values and their occurrence counts. For rest of the data values in the current data batch, at least a first histogram having a second number (N) of buckets is generated. The occurrence count information and the first histogram of the current data batch are merged to merged occurrence count information and merged histogram of data batches processed earlier. A next data batch is processed as a current data batch until the whole data set has been processed. An encoding scheme is determined based at least on the merged occurrence count information and the merged histogram corresponding to the data set.

公开(公告)号：DE19939281A1

公开(公告)日：2001-02-22

申请号：DE19939281

申请日：1999-08-19

Applicant: IBM

Inventor： BENDEL PETER ,  SCHAECK THOMAS ,  WEBER ROLAND

IPC: H04L29/06 ,  H04L9/32 ,  H04L12/22 ,  G06F12/14

Abstract: Access control systems for safeguarding access to the contents of web-sites e.g. during exchange of information and business ideas on the internet suffer from shortcomings, such as proneness to bugging, and to the risk of replacement of one TCP/IP address of an authorized client by another TCP/IP address of an unauthorized client, and to provide improved security during communication , the use of a smart card during access control to web-sites is used and considerably raises the level of security of the authentication procedure, without requiring any change to the existing browser.