1
Gordon W Braudaway, Karen A Magerlein, Frederick C Mintzer: Color correct digital watermarking of images. International Business Machines Corporation, Richard M Ludwin, June 25, 1996: US05530759 (366 worldwide citation)

A system for placing a visible "watermark" on a digital image is disclosed, wherein an image of the watermark is combined with the digital image. The pixels of the watermark image are examined, and for each pixel whose value is not a specified "transparent" value, the corresponding pixel of the orig ...


2
Joel L Wolf, Philip S Yu: Look-ahead scheduling to support video-on-demand applications. International Business Machines Corporation, Richard M Ludwin, October 24, 1995: US05461415 (295 worldwide citation)

A system and method of supporting pause-resume in a video-on-demand service of a type which can accommodate multiple viewers sharing a common data stream is described. When a video server receives a performance request from one of the viewers for showing a particular video, it identifies and reserve ...


3
Lawrence A Clevenger, Louis Lu Chen Hsu, Jack A Mandelman, Carl J Radens: Self-trimming method on looped patterns. International Business Machines Corporation, Richard M Ludwin Esq, McGinn & Gibb PLLC, October 14, 2003: US06632741 (226 worldwide citation)

A method of self-trimming pattern, includes forming a pattern containing a plurality of regular or irregular features within a first material deposited on a substrate, depositing a conformal layer of second material, and etching the second material to form spacers of the second material along the si ...


4
Alan George Ganek, Louis Paul Herzberg, Antonio Ruiz, Barry Edward Willner: Fixed video-on-demand. International Business Machines Corporation, Richard M Ludwin, Louis P Herzberg, March 3, 1998: US05724646 (209 worldwide citation)

A system, method and apparatus for Video-on-demand (VOD) satisfying the desire of `surfers`. The process entails a server operating in a standard Near-Video-on-demand (NVOD) mode, whereby it repeatedly transmits multiple copies of each program on separate channels. Each copy is delayed by a staggere ...


5
Clement Richard Attanasio, Maria Angela Butrico, James Lyle Peterson, Christos Alkiviadis Polyzois, Stephen Edwin Smith: Virtual shared disks with application transparent recovery. International Business Machines Corporation, Richard M Ludwin, Kevin M Jordan, September 16, 1997: US05668943 (203 worldwide citation)

A system and method for recovering from failures in the disk access path of a clustered computing system. Each node of the clustered computing system is provided with proxy software for handling physical disk access requests from applications executing on the node and for directing the disk access r ...


6
Jong Deok Choi, Ravi Konuru, Harini Srinivasan: Method and system for recording and replaying the execution of distributed java programs. International Business Machines Corporation, Richard M Ludwin Esq, McGinn & Gibb PLLC, December 14, 2004: US06832367 (198 worldwide citation)

A method for recording and replaying execution of distributed programs on a computer system in a distributed environment, includes identifying an execution order of critical events of a program, generating groups of critical events of the program, wherein for each group, critical events belonging to ...


7
Daniel M Dias, Ambuj Goyal, Francis N Parr: Intelligent page store for concurrent and consistent access to a database by a transaction processor and a query processor. International Business Machines Corporation, Ronald L Drumheller, Richard M Ludwin, May 31, 1994: US05317731 (195 worldwide citation)

An apparatus, embodied in an Intelligent Page Store, for providing concurrent and consistent access to a functionally separate transaction entity and a query entity to a shared database, while maintaining a single physical copy of most of the data. The Intelligent Page Store contains shared disk sto ...


8
Charu Chandra Aggarwal, Joel Leonard Wolf, Philip Shi Lung Yu: Permutation based pyramid block transmission scheme for broadcasting in video-on-demand storage systems. International Business Machines Corporation, Richard M Ludwin, Louis P Herzberg, May 12, 1998: US05751336 (195 worldwide citation)

Portions of multimedia program (presentation) are repetitively broadcast to receiving stations with subsequent portions being broadcast less frequently than preceding portions. Blocks of at least one of the portions are broadcast in varying permutations from one repetition to a next repetition. Furt ...


9
Clement Richard Attanasio, German Sergio Goldszmidt, Guerney Douglas Holloway Hunt, Stephen Edwin Smith: System and method for providing dynamically alterable computer clusters for message routing. Internatioinal Business Machines, Richard M Ludwin, Anne V Dougherty, Kevin M Jordan, June 29, 1999: US05918017 (157 worldwide citation)

A TCP-connection-router performs encapsulated clustering by dividing each encapsulated cluster into several Virtual EC (VECs), dynamically distributing incoming connections within a VEC based on current server load metrics according to a configurable policy. In one embodiment, the connection router ...


10
Murthy V Devarakonda, William A Kish, Ajay Mohindra: Non-disruptive recovery from file server failure in a highly available file system for clustered computing environments. International Business Machines Corporation, Richard M Ludwin, October 15, 1996: US05566297 (149 worldwide citation)

A system and method for non-disruptive recovery from a file server failure. State information for a file system managed by a server is maintained among a plurality of client nodes of a distributed system. When a failure of the server is detected, all ongoing requests to server are suspended. Then, t ...