3. Glossary

Here is an explanation of terminology.

#	Item	Description
1	IVI	In-Vehicle-Infotainment. On-board equipment which has navigation, audio functions, and so on.
2	IVI system	The system for booting IVI up.
3	ACC(Accessory)	The power source that supplies electricity to the IVI and other electrical components.When ACC is turned on, the information is sent to IVI and IVI is activated. In addition to ACC, there are other power sources such as +B and IG in general.
4	HMI	Human Machine Interface. In particular, this document refers to the Interface, which is operated by the user on the IVI device.
5	Basesystem	A group of software located in a layer close to Operating System. As an asset of Toyota, it has been contributed to AGL in March 2021.
6	Heartbeat	The function to confirm the behaviors by the regular communication between the two processes.
7	Resident service	A service that starts automatically at system startup and is always running in the launched state.
8	Non-resident service	A service that is activated by a request from an application.
9	Service launcher	A function to launch services other Service launcher.
10	Service terminator	A function to terminate services other Service launcher.
11	Service Failure Detection and Procedure module	The module with the ability to detect failure in system and provide the procedure like restoring or storing logs.
12	System Logging Support module	The module to leave a log in a specified location in the IVI system when a request to leave a log is received.
13	Backup Data Management module	The module with the ability to store data permanently in the IVI system.
14	Vehicle Parameter Configuration module	The module with the ability to provide necessary information in response to a request from a service to acquire necessary environmental variables, or to determine whether an IVI product supports various functions and return the results to the service.
15	Vehicle Parameter Configuration module	The module with the ability to provide necessary information in response to a request from a service to acquire necessary environmental variables, or to determine whether an IVI product supports various functions and return the results to the service.
16	CAN communication module	The module for CAN data processing between other ECUs and applications.
17	GPS	Global(Satellite) Positioning System
18	Sensor data	Gyroscope, Accelerometer, Speed pulse, vehicle reverse info, etc.
19	GPS and Sensor Communication module	The module with the ability to get and send GPS data or Sensor data to necessary applications.