Method for multi-tasking multiple Java virtual machines in a secure environment

• US 20030204550A1
• Filed: 04/24/2002
• Published: 10/30/2003
• Est. Priority Date: 04/24/2002
• Status: Active Grant

• Current Assignee: MicroPairing Technologies LLC (Micropairing Technologies Ltd.)
• Original Assignee: Medius Inc
• Inventors: Lutter, Robert Pierce
• Granted Patent: US 7,178,049 B2
• Time in Patent Office: Days
• US Class Current: 718/102
• CPC Class Codes: G01S 19/37 Hardware or software details of the signal processing chain
• CPC Class Codes: G06F 9/468 Specific access rights for resources, e.g. using capability register
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources

Abstract

The present invention allows construction of a secure, real-time operating system from a portable language such as Java that appears to be a Java virtual machine from a top perspective but provides a secure operating system from a bottom perspective. This allows portable languages, such as Java, to be used for secure embedded multiprocessor environments.

Claims

1. An operating system, comprising:

an operating language that provides as an open software access system for software development; and

a secure real-time executive that manages message security for the operating language.

2. An operating system according to claim 1 wherein the operating language is Java.

3. An operating system according to claim 1 wherein the operating language and the real-time executive operate in multiple processors at the same time.

4. An operating system according to claim 1 wherein the operating language is used to control vehicle operations in real-time.

5. An operating system according to claim 2 wherein the real-time executive manages different JAVA applications at the same time.

6. An operating system according to claim 5 wherein the real-time executive assigns priority values to JAVA messages and processes the JAVA messages according to the assigned priority values.

7. An operating system according to claim 6 wherein the real-time executive assigns priority preemption to messages for controlling how the operating language in different applications talk to each other.

8. An operating system according to claim 6 wherein the real-time executive determines how data is achieved by the JAVE operating language.