Introduction and Goals
The goal of the Home Entertainment system is let people watch TV programs via satellite or stream content from the internet.
The main system requirements are:
HE-SYS-01: Convert satellite television program into video and audio signal
HE-SYS-02: Change television program using a remote control
HE-SYS-03: Stream video/audio content from the internet
HE-SYS-04: Control streaming content via LAN connected device e.g. smartphone
HE-SYS-05: Automatically check for updated software
The following diagram shows the weighted SQuaRE model of ISO25010 (Systems and software Quality Requirements and Evaluation - System and software quality models).
The main focus of the system lies on Usability by the Owner and Viewer. Security aspects are relevant to the extent that neither the system integrity nor the Owners privacy may be compromised. The third category of important quality attributes concerns the compatibility of the entire system that should allow easy installation and a certain degree of fault tolerance towards errors in individual system components.
As the system is a consumer good with relatively short lifespan, maintainability is not of high importance.