computer science

SmartDeviceLink

SmartDeviceLink is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SmartDeviceLink rather than just read about it. In short: SmartDeviceLink consists of two distinct software elements: a core automotive piece which wraps in-vehicle services and integrates to the in-vehicle HMI, and a mobile proxy, which executes APIs to access and use services on the automotive head unit. It is a project intended to standardize and wrap the many in-vehicle interfaces which may exist in the automotive context.

Key takeaways

SmartDeviceLink belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SmartDeviceLink to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SmartDeviceLink from memory before moving on to harder problems.

Reference excerpt

SmartDeviceLink consists of two distinct software elements: a core automotive piece which wraps in-vehicle services and integrates to the in-vehicle HMI, and a mobile proxy, which executes APIs to access and use services on the automotive head unit. It is a project intended to standardize and wrap the many in-vehicle interfaces which may exist in the automotive context. The end goal is to provide an expandable software framework to both mobile application developers and automotive head unit creators for the creation of brought-in applications that appear integrated onto a head unit.

Features

In-vehicle core The in-vehicle core has some of the following features:

Manages the physical discovery and logical transport connection to a mobile device application Can support white-labeled, multi-function but single application use cases, as well as single app, single function use cases Provides a consistent interface for applications to understand the capabilities of an in-vehicle head unit Manages and maintains the state of connected mobile applications and notifies applications of appropriate state changes Wraps in-vehicle services such as buttons, displays, voice, menu systems, audio controls and other common vehicle inputs and outputs to a common messaging format and API Is expandable to allow for specific OEM or head unit manufacturer APIs or messaging Creates a template- and meta-based UI that creates consistent developer experiences regardless of the actual HMI representation

Mobile proxy components The mobile proxy components support some of the following:

Provides a common, abstracted interface to the in-car entertainment system to integrate to SmartDeviceLink-enabled mobile applications Is available for Android and iPhone applications Supports TCP, Bluetooth and Apple-specific protocol implementations for transport, and can be expanded to include other transports Simplifies transport discovery, connection, and protocol use Is expandable to allow for specific-OEM or head unit manufacturer APIs or messaging

Operation Smart device and car connect via standard protocols such as Bluetooth and Wi-Fi. Application makes requests to the vehicle and the vehicle responds (Remote Procedure Calls). Application appears to be running inside the vehicle, but all business logic is contained on mobile device. User interacts with the vehicle, and it notifies application of any system or user events Application reacts by sending requests to modify application behavior or appearance in the vehicle.

References

Tim Stevens: Ford races to create standard for connected cars, CNET, 26 November 2013

External links GENIVI Alliance, now called COVESA (Connected Vehicle Systems Alliance): SmartDeviceLink Horak, Andrej (5 January 2017). "Sygic Car Navigation Partners with Ford Motor Company as the First Navigation App". Sygic. Retrieved 2 October 2020.

Illustrations

Worked examples

Example 1 — a first encounter with SmartDeviceLink

Start with the simplest possible case. Write down what SmartDeviceLink claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SmartDeviceLink before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SmartDeviceLink ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SmartDeviceLink

In research: SmartDeviceLink appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses SmartDeviceLink in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: SmartDeviceLink is common in secondary-school and first-year university syllabi. It links to neighbouring topics Application programming interfaces, Automotive software, so understanding it makes those chapters shorter.
In everyday life: Look for SmartDeviceLink outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study SmartDeviceLink in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SmartDeviceLink means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain SmartDeviceLink out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SmartDeviceLink in simple terms?

Why does SmartDeviceLink matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SmartDeviceLink?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SmartDeviceLink.