Tuesday, 20 February 2018

Bluetooth car radio: how does it work?

February 20, 2018 0 Comments
The car is the preferred partner of any motorist, which is why some people do not hesitate to afford the best in the field and opt for a car stereo Bluetooth. But how does it work?


Bluetooth car radio: convenient to call the steering wheel

The legislation on the phone while driving is very strict in United States. This is why many motorists choose a Bluetooth car radio that allows them to communicate on board (the hands-free kit is now prohibited). With this system, your car radio is directly connected to your phone (if it is Bluetooth enabled). In this way, you control your smartphone with the voice without ever having to leave your steering wheel of the hands. When you make or receive a call, you hear the other party directly in the speakers of your Bluetooth car stereo . A solution all the more useful that the Bluetooth headset was, meanwhile, prohibited in 2015. If you are looking for a Best Bluetooth Audio Transmitter, i recomend you to read all the reviews before purchasing it.

Bluetooth car radio: how to call?

When you get into your vehicle, you first need to activate the Bluetooth feature of your smartphone. Your Bluetooth car radio then detects it automatically, and synchronizes your repertoire and your music. Then, all you have to do is use the voice command to call your interlocutors. And if you listen to music before receiving a call, it automatically turns off. Simple and much safer.

Bluetooth car radio: other features and prices

The other advantage of a Bluetooth car stereo is that it automatically synchronizes the music on your smartphone. So you can listen to your playlists without having to plug in your phone. In terms of price, there is for all the scholarships. Count around 50 € for a classic entry-level model. For a car stereo Bluetooth with touch screen and integrated GPS , you will pay between 200 and 400 euros, or 700 euros for high-end models. Before buying your Bluetooth car, remember to check that it is compatible and adapted to the cabin of your vehicle.

Watch my latest video on bluetooth Transmitter for Car

By at No comments:

Monday, 19 February 2018

Bluetooth: a safer and more energy efficient alternative to your body

February 19, 2018 0 Comments
Bluetooth serves us every day to transfer data over short distances, it is a technology that can be expensive in resources and can cover a wide range of emissions. In recent days, researchers at UCSD (University of California San Diego) have developed a new technology even more powerful: send a signal via the magnetic field of our body rather than the air.


For the moment, the project of these student-researchers is in the stage of development but the first phases were conclusive and promising. This advance in wireless data transmission could change the way we use our current connected objects, and especially those we carry. The researchers discovered a way to emit a signal through our body, using our natural magnetic field . In addition, this technology could be much safer and cheaper than Bluetooth.

Also Read: 

Bluetooth 5: how does it work and what will it change?



If the latter makes our life easier, he is still unable to function if an obstacle is in his way. The connections, despite the advances of Bluetooth 4.2 , remain unstable and prone to cuts as soon as an element gets in the way. In these cases, communications are harder to maintain and require more energy to cross these barriers. One of these obstacles is the human body but it could finally provide a solution.
By operating a little like an MRI scanner with a much lower power consumption, the prototype that Jiwoong Park wears on his arm represents a kind of armband made up of cables wrapped in PVC. This armband generates magnetic fields through the different parts of the body .


Using this means of the human body, the loss of signal induced by interference between devices would be 10 million times less than with Bluetooth. As a result, connected objects may require less power by operating more easily.
 
 The problem with connected objects that we carry on us as smartwatches is that they do not hold the charge very long because of their small batteries. With this system of communication via the energy released by the human body, we could reduce the consumption of energy in a consequent way - Jiwoong Park, UCSD Ph.D student and lead author

Security side, the system would be much safer too . Bluetooth is spreading about 30 meters around, whereas here, because of the spreading field limited to our body, potential hackers should be particularly close to us if they wanted to intercept your connection.

This technology does not seem really useful for remote objects, but for watches, headphones and other devices carried on us, these  could be a great improvement . Still in the research and development phase, let's wait a little while before seeing if this advance will interest manufacturers enough to find it within new connected devices.
By at No comments:

Bluetooth 5: how does it work and what will it change?

February 19, 2018 0 Comments
First photo sharing between two phones, streaming lossless music, Bluetooth technology has evolved very important. The deployment of Bluetooth 5 with the Galaxy S8 as a standard-bearer opens the door to new digital mutations. For the occasion, we take a look in the rearview mirror to understand the progress made in less than 20 years. 

From Bluetooth 1.0 to Bluetooth 4.0

The Bluetooth was born in the premises of the Swedish company Ericsson in 1994. An origin that undoubtedly explains its name taken from the Nordic history. He refers to the Danish king Harald the blue tooth, which unified the kingdoms of Denmark and Norway through communication. The purpose of Bluetooth being to be a standard of communication between different technologies, the name was all found.
In 1998, several telecommunications companies (IBM, Nokia, Toshiba ...) created the Bluetooth Special Interest Group (SIG) to specify the standards of this communication standard. The following year, Bluetooth 1.0 came with his first phone, the Ericsson T39 .
The following versions will be mainly dedicated to fix bugs and increase the bitrate. It was not until 2004, to see the Bluetooth 2.0 + EDR (Enhanced Data Rate). This then makes it possible to increase the bit rates to 2.1 Mbps. It will be necessary to wait again 5 years before seeing a new important evolution. In 2009, the Bluetooth 3.0 + HS (High Speed) multiplies by 10 the bandwidth. Most importantly, it now uses  an 802.11 connection (identical to Wi-Fi) for data transfer .
Bluetooth 4.0, deployed from 2010, is part of a different logic. Two standards coexist. The classic and the Low Energy . The latter, much less greedy in energy allowed different uses that impact us today still.

The revolution of Bluetooth 5

The last born is the Bluetooth 5. If we can be surprised by the radical change in numbering, it is actually to follow the current trend. Like Chrome and Google, the idea is to limit to whole numbers. But, to tell the truth, chance is a good thing since it is also a major evolution .
Specifically, the range is doubled and the flow rate of Bluetooth Low Energy low energy transmissions is quadrupled. This change announced last year by the Bluetooth Special Interest Group (SIG) makes it possible to increase the bit rate to 4 Mbits and the range to 200 m. What seriously upset the uses. While we might have feared that it increases energy consumption, it is not the case, it is done on an equal level.
Bluetooth 5 also improves interoperability and coexistence with other wireless technologies. This involves reducing interference , especially those that could exist with Wi-Fi. The blessed bread to be able to install networks based on Bluetooth in a house or in a company but also for the manufacturers of smartphones.

The Galaxy 8, the first smartphone in Bluetooth 5.0

 

The first smartphone to integrate the Bluetooth 5 standard is the Galaxy S8. For the South Korean brand, it is of course an important movement in terms of brand image. That his flagship is the first to offer this feature is an element reinforcing its pioneering brand image . This should also attract new customers already eager to benefit from this technology. The fact that the brand is part of Bluetooth Sig has undoubtedly helped facilitate the process to integrate.

 

At first, this will mainly connect two Bluetooth audio devices at the same time. Gadget? In appearance yes, we rarely share a call on two headsets. But this benefit is to look at the yardstick of another technological revolution, that of connected objects .

Connected objects, a new development engine for Bluetooth 5

 

Because it is in this sector of activity that the development of Bluetooth 5 will play an important role. While the smartphone market is skating, that of connected objects is still in its infancy. Experts estimate that by 2020, there will be more than 50 billion! France already represents a leading market, with 30% of the French being equipped.
And connected objects are greedy for communication. Domotics, Quantified Self or E-Health are leading sectors that generate an immeasurable amount of data that circulates and accumulates. These transfers are carried out mainly through two communication standards. Wi-Fi and Bluetooth .
For a long time, Bluetooth has benefited from the advantage of its lower battery consumption, reinforced by the standardized Low Energy in 2010. What's more, this standard benefits from an almost perfect interoperability between the different objects for a very high data consumption. low. From a health point of view also the advantage is Bluetooth. Although the debate still reigns over the actual dangers of electromagnetic waves , the power of emission is much lower than for Wi-Fi.
But, he  tried to line up last year with the announcement of Halow . Also called passive Wi-Fi, it has a longer range and is much less energy. His profile seems almost destined for the market of connected objects. Bluetooth 5 is also a reaction to try to establish itself as the basic standard in the market for connected objects.

 

 



By at No comments: