Bluetooth

Showing posts with label Radio frequency. Show all posts

It's Safe To Use Bluetooth Technology In Cars

With more and more parts of modern vehicles being made with computer chips controlling their functions, you might worry that busing Bluetooth technology in cars would mess up your car. Bluetooth gadgets have been known to interfere with medical equipment and occasionally microwave ovens. However, it is highly unlikely that a car with a computer chip in it would ever crash because it used a Bluetooth audio device.

Frequency Hopping In Timeslots

Bluetooth technology in cars can hook your cell phone to a hands-free headset or it can hook up to your iPod and play the music through your car speakers. There are many other things you can use Bluetooth technology in cars, but playing music and talking on the phone are two of the most used activities.

Bluetooth technology in cars works very much like a combination of a radio and a walkie-talkie. It just doesn't pick up one kind of radio frequency, however. It can pick up several frequencies of radio waves. This is how it can concentrate on one source of information at a time, instead of trying to broadcast all radio stations or telephone conversations in the area at once.

Data or information is sent in units called "packets" to your Bluetooth device. This could be your phone sending it to your headset, for example. Your Bluetooth and your cell phone work together to send these packets from one radio frequency to another, never staying on one frequency for too long. Technically, this is called "frequency hopping in timeslots".

Bluetooth can only work in a small area, such as your car. This means that you can't pick up the music from the Bluetooth used in the Hummer next to you and you only hear the music that you want to from your Bluetooth. However, if the Hummer next to you has the window down and the volume set high, you will hear the music. No Bluetooth technology in cars can help you with that…yet.

Be Sensible

Somebody else with a wireless handheld device or a laptop and a good encryption program can listen in on your packets sent between your Bluetooth and your electronic devices. However, they pretty much have to be in the car with you in order to transmit any malware (malicious software). However, you should never have your Bluetooth on when you have somebody you do not know in your car. You also should keep your Bluetooth hidden, if at all possible.

How Bluetooth Wireless Works

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The world of communication has changed greatly in a short amount of time. Thanks to the revolutionary world of cell phones, the world can be connected in an instant. However, cell phones without a wireless device can prove to be deadly if you are driving and talking at the same time. Luckily Bluetooth wireless items have come along, and they help to ensure that the world of communication gets smaller and smaller all the time. Understanding how a wireless Bluetooth device actually works though, is something that most of us do not think of when using one. But, as with any other type of gadget, understanding how it works can make us a better user.

Basic Bluetooth Wireless Information

The first thing to understand about the Bluetooth wireless device is that it uses a radio frequency to actually work. If you have a child then you also have another device that uses the same type of frequency. A baby monitor acts just like a Bluetooth wireless device. The actual radio waves that work with a wireless Bluetooth device are very low and can actually work up to thirty two feet away from the device, such as a cell phone that it is compatible with when working. The good thing about using a Bluetooth wireless headset is that because the Bluetooth wireless device does what is known as frequency hopping, rarely will two or more devices interfere with each other. That is why so many people can drive on the same road and not hear each other’s conversation. Granted, though, sometimes this may actually occur, but it is really a rarity.

Since this may be a draw back for some to purchase a Bluetooth wireless device, one may be wondering how often a Bluetooth wireless device actually does change it frequency. The answer is a whopping one thousand six hundred a second. That is enough to make anyone’s head do a double take. A person who is reluctant to purchase a Bluetooth wireless device on the grounds that they will hear others should really put their fears at ease.

Owning and operating a Bluetooth wireless device is easy once you understand how they work. Just as with other devices including a garage door opener and a baby monitor, a Bluetooth wireless device uses radio frequency. This is a plus for those who may be pondering whether or not to purchase one. Bluetooth wireless devices have come a long way, and they help to keep us safe while we drive, so go ahead and buy one. It may save your life.

What Is Bluetooth Technology? A Really Fancy Radio

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You know the expression, "The more things change -- the more things stay the same?" That certainly applies to what Bluetooth technology is. It works very much like that crazy little high tech device we call a radio. When a station broadcasts on radio waves, a radio (designed to pick up those waves) makes the inaudible signals audible. You could stand right next to a radio station and not know what song they were playing unless you had a radio with you.

Frequency Hopping In Timeslots

So, what is Bluetooth technology? It's a radio for wireless devices. It's also a translator, making, say, phones with Bluetooth technology able to download information to your PC or Laser printer. It only works for short distances, but it does keep your hands free. If you do a lot of driving for your job, then what is Bluetooth technology for you? A lifeline!

The actual science to describe every detail of what Bluetooth technology is would take up a book in and of itself. This will just be a summary, but it will still give you a good idea of what it's all about. Technically, the name of the means a Bluetooth device uses to do the magic it does is called "frequency hopping in timeslots".

Now, what does that mean? It means a Bluetooth device keeps changing from one radio frequency to another after a certain "packet" of data is received. This packet of data could be a unit or time, an email or small bits of information. Data or information is sent out on a global radio frequency. A computer chip in the Bluetooth device picks it up and acknowledges receiving it and then switches to another frequency. The gizmo sending the information also changes to that frequency. In case you're wondering, there are a lot of frequencies a Bluetooth can pick up.