science

Qterics

Qterics is a 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 Qterics rather than just read about it. In short: Qterics (formerly Broadcast Data Corporation and later UpdateLogic Incorporated ) is a company which has developed a system for datacasting firmware upgrades to digital television devices. It appears that UpdateTV is the only product the company, founded in 2003, has yet developed.

Key takeaways

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

Reference excerpt

Qterics (formerly Broadcast Data Corporation and later UpdateLogic Incorporated ) is a company which has developed a system for datacasting firmware upgrades to digital television devices. It appears that UpdateTV is the only product the company, founded in 2003, has yet developed.

Products

UpdateTV UpdateTV is a multipath worldwide distribution system which allows digital televisions to automatically receive firmware upgrades and software patches sent out via terrestrial broadcast, digital cable networks, and the Internet. The network and technology has been under development by UpdateLogic since 2004, was completed in 2006, first shipped in TV sets in 2008 by Sony Electronics, and is now shipped in TVs from Sanyo and others. In the terrestrial case, the UpdateTV solution which works within the ATSC A/97 (Software Data Download Service, or SDDS) protocol, will be datacast by National Datacast on PBS TV stations across the United States. Major cable operators are required by contract to transmit the data such that the software upgrades are also passed to their customers. UpdateLogic works with content delivery network providers, or Internet service providers, to download the software update(s) to connected devices. TV manufacturers work with UpdateLogic to schedule the network distribution of the software patch(es) and optimize the roll-out to ensure the TVs receive it. The upgrades are transmitted repeatedly every day over a period of many months, in part so that the update is not missed due to a power outage, being unplugged (such as to prevent lightning damage while a resident is away, or perhaps being in storage), or due to data corruption or data loss caused by interference or weak signal strength in rural areas or mountainous terrain - which only occurs in the terrestrial broadcast distribution. UpdateTV does ask the user to give consent to install the software on their TV. There is no charge to the consumer for installing an update. Software updates for television sets have fixed issues with video resolution, format compatibility, channel changing speed, V-chip ratings, user interface, timer controls, and more. UpdateTV is enabled on silicon chip set solutions from Broadcom, AMD, Zoran and others. The UpdateTV network can deliver updates to many types of devices - not just television sets. Devices such as Blu-ray players, mobile/handheld TVs, set-top boxes and gaming consoles are capable of using the service - since they are connected to the Internet, a cable network, and/or a digital TV antenna.

Sale to Silicon Image On May 6, 2014, Silicon Image purchased UpdateLogic for an undisclosed price. On December 4, 2014, Qualcomm purchased a 7% stake in the company for US$7 million. Effective on that date, UpdateLogic was renamed Qterics.

Notes

External links UpdateTV site at the Wayback Machine (archived January 24, 2007)

Worked examples

Example 1 — a first encounter with Qterics

Start with the simplest possible case. Write down what Qterics claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 Qterics 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 Qterics 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 Qterics

In research: Qterics appears in 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 Qterics 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: Qterics is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2014 mergers and acquisitions, American companies established in 2003, Companies based in Plymouth, Minnesota, so understanding it makes those chapters shorter.
In everyday life: Look for Qterics 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 Qterics in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Qterics 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 Qterics out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Qterics in simple terms?

Why does Qterics matter?

Because it connects several 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 Qterics?

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 Qterics.