1
Gerald S Lang: Method and apparatus for protecting material on storage media and for transferring material on storage media to various recipients. Hoffman Wasson & Gitler, March 2, 1993: US05191611 (483 worldwide citation)

A method and apparatus for granting privileges for securely and selectively retrieving material such as data and databases, messages and other textual information, graphics, tables, analogs such as maps, facsimiles (FAX) of all manner of transmitted materials, audio such as voice or speech and music ...


2
Gerald S Lang: Method and apparatus for protecting material on storage media. Hoffman Wasson & Gitler, November 12, 1991: US05065429 (249 worldwide citation)

A method and apparatus for granting selected access to material such as data and databases, messages and other textual information, graphs, tables, maps, facsimiles (FAX) of all manner of transmitted materials, audio such as speech and music, video, images, and photographs, provided on storage media ...


3
Robert B J Warnar, Gerald S Lang: Method and apparatus for controlling optical characteristics of a programmable surface medium. Hoffman Wasson & Gitler, August 22, 1995: US05444559 (4 worldwide citation)

An electromagnetic radiation control device is proposed using visually transparent computers and associated components to control the device's optical memory and the characteristics of its active optical component all contained within a capsule. The invention can be applied to items such as eyeglass ...


4
Gerald S Lang: Method for protecting material on recorded medium and device for the same. Gerald S Lang, June 1, 1993: JP1993-134863

PURPOSE: To provide a safety system and device for permitting access to only one part of program information or more than one program from the plural programs, and access to only a part whose usage is limited provided on a recorded medium by various individuals. CONSTITUTION: A recorded medium is in ...