This document defines a set of standard application layer interfaces called JAUS HMI Services. JAUS Services provide the means for software entities in an unmanned system or system of unmanned systems to communicate and coordinate their activities. The HMI Services represent the platform-independent Human Machine Interface (HMI) capabilities commonly found across all domains and types of unmanned systems. Five services are defined in this document:

• Drawing

• Pointing Device

• Keyboard

• Digital Control

• Analog Control

Each service is described by a JAUS Service Definition (JSD) which specifies the message set and protocol required for compliance. Each JSD is fully compliant with the JAUS Service Interface Definition Language (JSIDL) [AS5684].

Purpose

The purpose of this document is to provide unmanned systems, subsystems, and payloads a standard message set for the definition of HMI drawing functions and associated control mechanisms. While this standard does not mandate a particular application, a common use allow an unmanned system to provide a consistent user interface across a variety of Operator Control Units (OCUs).

JAUS Core Service Set

The JAUS Service Definitions defined herein make use of the inheritance functionality provided by JSIDL to incorporate capabilities as specified by the JAUS Core Service Set [AS5710]. These documents must be used together to define a complete service.

It is important to note that details related to ‘Message Serialization' and ‘Understanding Protocol Descriptions' can be found in the JAUS Core Service Set document, and are not repeated here.

Compliance

The JAUS HMI Service Set must support compliance assessment. To do so, this specification must be sufficiently precise to enable the "compliant"/"not compliant" distinction to be made independently of the underlying transport mechanism. It is important to note that implementations are considered compliant to individual Service Definitions within this Specification; it is not necessary that a single entity realize each service to be considered compliant.

Document Organization

The layout of this document is as follows. Section 2 lists external references used throughout the specification. Section 3 specifies common conventions and definitions. Section 4 specifies the JAUS Service Definition for each of the HMI Services, with particular emphasis on the description, assumptions, message set, and protocol behavior. Section 5 describes the message encoding for each message set. Section 6 contains any applicable notes. Finally, APPENDIX A and APPENDIX B contain the complete JSIDL representation for each service and their associated message set.