Data processing: generic control systems or specific application – Generic control system – apparatus or process – Having specific algorithm
Reexamination Certificate
2006-03-28
2006-03-28
Patel, Ramesh (Department: 2121)
Data processing: generic control systems or specific application
Generic control system, apparatus or process
Having specific algorithm
C700S001000, C700S002000, C700S018000, C700S019000, C700S086000, C717S152000, C717S152000, C717S152000, C717S152000, C709S220000, C709S223000, C709S224000
Reexamination Certificate
active
07020532
ABSTRACT:
The invention provides improved methods and apparatus for control using field and control devices that provide a virtual machine environment and that communicate via an IP network. By way of non-limiting example, such field device can be an “intelligent” transmitter or actuator that includes a low power processor, along with a random access memory, a read-only memory, FlashRAM, and a sensor interface. The processor can execute a real-time operating system, as well as a Java virtual machine (JVM). Java byte code executes in the JVM to configure the field device to perform typical process control functions, e.g., for proportional integral derivative (PID) control and signal conditioning. Control networks can include a plurality of such field and control devices interconnected by an IP network, such as an Ethernet.
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Badavas Paul C.
Christiansen T. Eric
Hansen Peter D.
Johnson Alexander
Keyghobad Seyamak
Invensys Systems Inc.
Nutter & McClennen & Fish LLP
Patel Ramesh
Powsner David J.
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