At&t Bell Laboratories

Other

John F McDonald

Martin J Welt

Timothy A Wendt

John D Palframan

Frank Kaplan

Glenn R Babecki

Gregory S Yates

George F MacLachlan

Hueichi R Liu

Pankaj K Das

Carlos Escolar

Harry F Tiersten

Paul M Zislis

Hsin-Kuo Kan

Peter J Matteo

Craig M Garnant

Roger T Tran

A geographically distributed multiprocessor system is implemented by locating groups of processors at nodes which are interconnected by way of a transport network and which are connected by way of local lines to customer terminals and hosts. Each processor supports a plurality of processes including certain process executing programs 'customized' for the customers and other processes executing programs having 'universal capabilities' which serve common needs of a plurality of customers. Processes communicate with other processes in the same processor by way of internal links and with other processes in other processors by way of combinations of internal links and external communication links. Interface processes exchange data between the internal and external links. A process can initiate a call to any other process and define the communication parameters for exchanging data information by selecting the appropriate internal link and supplying the code defining the communication parameters to the selected internal link.

Geographically distributed multiprocessor time-shared communication

A geographically distributed multiprocessor system is implemented by locating groups of processors at nodes which are interconnected by way of a transport network and which are connected by way of local lines to customer terminals and hosts. Each processor supports a plurality of processes which communicate with other processes in the same processor by way of internal links and with other processes in other processors by way of combinations of internal links and external communication links. Interface processes exchange data between the internal and external links. A process can initiate a call to any other process and define the communication parameters for exchanging data information by selecting the appropriate internal link and supplying the code defining the communication parameters to the selected internal link. The interface process relays the communication parameter code to the external link when the terminating end process is in the remote processor and processes the code when the terminating end process is the interface process.

A transducer array comprising a large number of separated sets of electrodes plated on a single piezoelectric plate of uniform thickness is described. Each set of electrodes is made to act essentially independently by placing them sufficiently far apart and employing an essentially trapped energy mode.

Monolithic mosaic piezoelectric transducer utilizing trapped energy modes

Growing community of inventors

Watchung, NJ, United States of America

John F McDonald