Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Paul J Mcclellan

Daryl E Anderson

William C Wickes

Andrew L Van Brocklin

Makarand P Gore

Michael A Pate

Charles Robert Weirauch

Tony S Cruz-Uribe

Laurence W Grodd

David Michael Kwasny

Charles M Patton

David Pettigrew

Molly L Hladik

Susan E Bailey

Robert M Miller

Mitchell A Abrams

Todd E Walker

Gabe L Eisenstein

Eric L Vogel

A data storage device includes a data storage mechanism within which is stored a computing program. The data storage device also includes a surface used for labeling. The labeling includes machine readable security information. The data program requires machine reading of the security information before at least a portion of the program is run.

Apparatus and method for providing data storage device security

An integrated system for individually labeling a recording medium at the time that digital information is recorded thereon, by recording write data with a digital recorder on the read/write surface of the recording medium and recording image data by inducing visible color change with a laser in laser sensitive materials on the opposite surface of the recording medium.

Integrated recording and labeling with optical recording device

An optical disc has a first plate, a second plate adhered to the first plate, and an optically-activated colorant disposed between the first and second plates.

Optical disc and method of labeling the same

A method for performing unit conversion and managing units in mathematical computations. The method employs unit objects, which each have a scalar part and a unit part that together are treated as a single entity in computation. In the process of carrying out computations, the unit object operands of a particular operation are disassembled into their scalar and unit parts, new scalar and unit parts are calculated therefrom, and the new parts are combined to produce the new unit object. The method thereby simplifies computation involving physical quantities such as length and temperature and also aids in verifying that the computations are correct. To simplify the entry of the unit parts for unit objects, a unique user interface is provided.

Method and apparatus for computing with terms having units

A calculator is defined by a user-interface centered around a last in first out stack of mathematical or logical objects, that is both visible and accessible to a user. Objects may be any of a number of different types, each type characterized by specific logical or mathematical rules. Calculator operations are provided that may be applied in a uniform manner to the objects, affecting either or both the internal composition of the objects or the external positions and number of the objects on the stack. Objects of different types are distinguished upon entry on the stack and in visible display by characteristic prefix and postfix symbols, and can be entered from a keyboard or created dynamically as the result of calculator operations.

Calculator having a user-accessible object stack for the uniform

Growing community of inventors

Corvallis, OR, United States of America

Paul J Mcclellan