公开(公告)号：CA2402486A1

公开(公告)日：2001-09-13

申请号：CA2402486

申请日：2001-03-05

Applicant: IBM

Inventor： DUTTA RABINDRANATH

IPC: G06F12/00 ,  G06F13/00 ,  G06F17/30

Abstract: In a system and method for transferring information using a client/server network, link popularity information characterising the popularity of files linked to a requested file may be transmitted from a server to a client. The popularity may include the relative likelihood of a user request for each of the linked files. The link popularity information may be used in selecting only the more popular linked files for anticipatory caching. The files corresponding to the links most likely to be selected by a user may be loade d into the cache memory of the server and/or downloaded to the client, in advance of any link selection by the user. Ordering of files for anticipator y caching based on their popularity may provide a high probability that the fi le corresponding to a selected link is already stored on a client computer at t he time the link is selected. The time between selection of the link by a user and viewing of the corresponding file may therefore be shortened. Because th e most popular linked files are cached first, and less popular files may not b e selected for anticipatory caching at all, the time and resources needed to perform the caching may also be reduced as compared to the case of anticipatory caching of all files linked to a requested file.

公开(公告)号：GB2358313A

公开(公告)日：2001-07-18

申请号：GB0029073

申请日：2000-11-29

Applicant: IBM

Inventor： BELLWOOD THOMAS ALEXANDER ,  DUTTA RABINDRANATH ,  EILBOTT SETH AARON ,  LITA CHRISTIAN ,  RUTKOWSKI MATTHEW FRANCIS ,  STERLING MERLE DOUGLAS

IPC: G06T1/00 ,  H04N1/32

Abstract: Upon receiving a request for a document, recipient- specific identifying information for the requester is secured, including at least the TCP/IP address(es) of the client being utilized by the requester and the proxy, if any, transmitting the request from the client, and optionally including client authentication information such as userid and password or HTTP request header information such as authorization header information, "From" header information, proxy-authorization information, and user-agent header information. The recipient-specific identifying information is then compared to a watermark database for the requested document. If a match is found, the associated unique watermark is retrieved from the database. If no match is found, a unique watermark is generated for the document and associated with the recipient-specific identifying information in a new entry within the watermark database for the document. The watermark is employed to generate a uniquely watermarked version of the requested document, with the watermarked version being returned in response to the request. Subsequently, when an infringing copy of the document is located, the infringing copy is compared to the original, unwatermarked version of the document to extract the watermark. The extracted watermark is then looked up in the watermark database for the document to determine the "original" copyright infringer, and the associated recipient identifying information is retrieved.

公开(公告)号：CA2313558A1

公开(公告)日：2001-02-26

申请号：CA2313558

申请日：2000-07-06

Applicant: IBM

Inventor： LITA CHRISTIAN ,  DUTTA RABINDRANATH ,  RODRIGUEZ JEFFREY EDWARD

IPC: G06F17/21 ,  G06F17/00 ,  G06F17/30 ,  H04L29/02

Abstract: Initially, a client requests a specific document and provides the preference s, including readability level preferences of the document, locale preferences, content filtering instructions preferences, governmental regulations preferences, natural language preferences, and document syntactic format preferences. The transcoding proxy requests and receives th e document from the origin server, with the document having origin semantic characteristics. The document from the origin server has an origin readability level and origin locale, is conformant with origin content filtering instructions and origin governmental regulations, and is i n origin natural language and in origin document syntactic format. Using the client semantics preferences, the transcoding proxy revises the document in a sequential or parallel fashion. The origin semantics characteristics of the document are, thus, revised to the semantic preferenc es specified by the client.