A method of forming resistance changing elements with improved operational characteristics for use in memory devices and the resulting structures are disclosed. A chalcogenide glass having the formula (Ge x 1 Se 1−x1 ) 1−y1 Ag y1 , wherein 18 ≦x l ≦28 , or the formula (Ge x2 Se l−x2 ) 1−y2 Ag y2 wherein 39 ≦x 2 ≦42 , and wherein in both the silver is in a concentration which maintains the germanium selenide glass in the glass forming region is used in a memory cell. The glass may also have a glass transition temperature (Tg) near or higher than typical temperatures used for fabricating and packaging memory devices containing the memory cell.

Stoichiometry for chalcogenide glasses useful for memory devices and method of formation

A computing system includes data encryption in the data path between a data source and data storage devices. The data encryption may utilize a key which is derived at least in part from an identification code stored in a non-volatile memory. The key may also be derived at least in part from user input to the computer.

Data security for digital data storage

An integrated circuit is disclosed for selectively encrypting plaintext data received from a first device to produce encrypted data to send to a second device. The integrated circuit comprises controllable encryption circuitry comprising a data input, an enable input, and a data output. The integrated circuit further comprises a plaintext input for providing the plaintext data to the data input, an encrypted text output for providing the encrypted data from the data output, and a first control input for receiving a first device authentication signal for authenticating the first device. The integrated circuit further comprises a verification circuit responsive to the first device authentication signal for producing a first verification signal for use in controlling the enable input of the encryption circuitry to enable the encryption circuitry to provide the encrypted data via the encrypted text output.

Integrated circuit comprising encryption circuitry selectively enabled by verifying a device

Methods and apparatus to determine audience viewing of video-on-demand programs are disclosed (Fig. 3). An example method disclosed herein comprises creating a reference database 304, 324 corresponding to a set of VOD programs, determining 320 whether a VOD program is selected at a subscriber site, extracting at least one identifier from a signal carrying the VOD program, and cross-referencing 328 the at least one identifier with the reference database.

Methods and apparatus to determine audience viewing of video-on-demand programs

The present invention provides compounds having formula (I), and additionally provides methods for the synthesis thereof and methods for the use thereof in the treatment of various disorders including inflammatory or autoimmune disorders, and disorders involving malignancy or increased angiogenesis, wherein R1 -R11, t, X, Y, Z, and n are as defined herein.

Macrocyclic compounds useful as pharmaceuticals

A data processor (20) which flexibly encrypts data within different address ranges includes an encryption determination circuit (50) to monitor an address conducted on an internal address bus (22) and when the address is within certain predefined ranges, perform encryption or decryption of address and/or data. For example the encryption determination circuit (50) may be used to selectively enable a data encryption-decryption circuit (60). When the data encryption-decryption circuit (60) is disabled, data conducted on an internal data bus (23) becomes "cleartext", i.e., non-encrypted. In one embodiment, the data encryption-decryption is performed in partial dependence on the address itself, and the address conducted to the external address bus is itself selectively encrypted as well.

Paul J. Polansky

Papers

Data processor with flexible data encryption