Personal Area Network.

Using wireless networking with your personal gadgets is often called PAN, which stands for Personal Area Network. The idea is that, in the future, we’ll all have laptop computers with their batteries charged and no more need to connect any wires to them at all — you just place your Bluetooth device near the computer, and the computer sees it and can use it straightaway.

Bluetooth has been around and in-use since 1999, and it’s only getting more popular. It was designed to be secure, low cost, and easy to use from day one.

There are two classes of Bluetooth that are in popular use: class 1 and class 2. Class 2 is the most common and cheaper standard, allowing you to use a device that is up to 10 metres (32 feet) away. Class 1 is rarer, but you can still find devices that use it easily enough, and it has ten times the range: 100 metres or 320 feet.

How Does It Work?

Bluetooth is more flexible than 802.11 wireless networking, in exchange for the shorter range. Essentially, a Bluetooth-enabled computer has one Bluetooth receiver installed in it, and this receiver can then be used with up to 7 nearby Bluetooth devices. On the other end, wireless devices do not need to have Bluetooth installed if they support it — it is already integrated.

Like 802.11, Bluetooth works by using radio signals to create bandwidth. It is not, though, the same thing as an old-style wireless mouse or keyboard, which required a receiver to be plugged into one of your computers’ ports, and didn’t have range or stability anywhere near that of Bluetooth.

Many computers now come with built in Bluetooth, especially Apple Macs. If you want to add Bluetooth to a computer that doesn’t come with it pre-installed, you should probably use a USB to Bluetooth adapter, although internal Bluetooth devices to install in your computer are available. If you have a laptop and a spare PCMCIA slot, you can get Bluetooth cards for that too.

What Can You Do With Bluetooth?

Mobile phones with Bluetooth are very popular, and so are PDAs — the instant synchronisation of addresses and calendars to a computer is a useful feature. Other than that, almost anything that would usually use USB can be done using Bluetooth, including digital cameras, mp3 players, printers, and even mice and keyboards. If you take a look through the comprehensive list of Bluetooth ‘profiles’ (kinds of devices that could, in theory, be Bluetooth enabled), it includes cordless phones, faxes, headsets, and even video.

Basically, more than anything, Bluetooth is a replacement for USB: some say that while 802.11 wireless networking is wireless Ethernet, Bluetooth is wireless USB.

Not Just for Computers.

Part of the power of Bluetooth is that it isn’t just used to connect things to computers — it can be used to connect almost anything to anything else, if both things are Bluetooth-enabled and recognise each other.

Mobile phones, in particular, take advantage of this. Hands-free headsets often use Bluetooth to communicate with the phone. Some cars, for example, now have on-board computers that will connect with a Bluetooth phone and allow you to make hands-free calls, regardless of where the phone is in the car (even if you’ve left it in your bag in the trunk!)

On top of that, of course, Bluetooth devices can communicate with each other. This has led to some people sending messages from their Bluetooth PDAs to others in close range — not an especially useful feature, but quite fun. This is called ‘bluejacking’, and the first recorded instance of it was a man who sent a Bluetooth message to another man’s Nokia phone while they were in a bank together. What did the message say? ‘Buy Ericsson’.

Since then, it has become possible to send images by bluejacking, and it is widely believed to be the newest advertising medium — yes, it lets billboards send messages to your phone, a practice known as ‘bluecasting’. Whether you think that’s cool or annoying, of course, is your choice.

Now what I am talking about is a company that manufactures user-friendly products! Canon the camera making company that now gives varied other products and services to the world such as printers, inks and fax machines and copiers!

Canon’s Roots

Canon’s roots were laid in 1933 with very few employees as a precision optical instruments lab. The Laboratory was founded in 1933 in a third-floor apartment of the Takekawaya Building in Roppongi, Azabu Ward, Tokyo. Its objective was to produce high-grade cameras.

A young man named Goro Yoshida, a passionate camera-lover; and his brother-in-law, Saburo Uchida, set up the Laboratory jointly. Their aim was to make cameras that could compete with the German models that were considered the most advanced of the day.

They started by analyzing existing cameras, which were difficult to obtain. Systematically, they studied each camera’s internal workings, examined mechanisms, drew up design diagrams and procured parts. Takeshi Mitarai, a close friend of Uchida provided the funds required for the research. Mitarai later became president of the company and built its foundation.

It then went on to become a renowned camera making company. When it grew and decided to diversify its business plans it had to shed its image of a company that manufactured only cameras, therefore the top brass of the company decided to take on the name Canon Inc in 1969. The year1969 was also the year that canon forayed into business machines and eventually into the printing business.

Product Chronology

To go through a brief chronology of Canon’s printing and copying history – Canon successfully developed the laser beam printer in 1975. In 1982, the PC-10 and PC-20, the world’s first personal copying machines with replaceable cartridges, were introduced. Canon, in collaboration with IBM Japan, Ltd., developed the world’s first notebook PC with an installed printer in 1993.

Bubble Jet Discovery

One of canon’s most interesting discoveries in the field of printing technology was the bubble jet printing technology. Researchers while working on the inkjet printing technology hit upon the discovery when a hot solder gun accidentally touched the tip of an ink-filled needle due to which ink sprayed out! Therefore, the researchers concluded that heat instead of pressure could be used to eject the ink on the media.
The development of this technology gave the world it’s first bubblejet printer in 1981.

Laser Beam Printing

Another important technology in the field of printing by Canon was the development of laser beam printers (LBP). It started research on laser as a means of writing as early as 1962. However it was unable to develop a practical laser source and hence could not acquire the patents it had applied for due to which the research and development was suspended.

In the 1970s when lasers came into practical application fields Canon resumed its research on laser beam printers and developed the LBP’s of today combining their electro photographic technologies with laser technology.

The development of lasers imprinting also gave birth to a number of high-speed copy machines by Canon such as The NP-8500, the world’s first retention-type copying machine in 1978.

The NP-8500 SUPER, an ultrahigh speed-copying machine capable of producing 135 copies per minute 1981; and the PC-10 and PC-20, the world’s first personal copying machines with replaceable cartridges were introduced by Canon in 1982.

In 1984 Canon gave the world its LBP-8/CX, the smallest and lightest laser beam printer.

Today Canon develops technology that couples direct printing options from Cell phones equipped with a digital camera, hence integrating printing technology with photography! One such latest technology is the direct wireless printing from a camera! The printing is achieved using infrared and Bluetooth communication technology embedded in the cell phones or PCs. Being wireless no cables are required, and the image quality parallels that of printouts from PCs using memory cards.

One important feature Canon uses to achieve real true to life image quality on paper is:

Color reproduction: The color range of digital cameras (YCC) is much wider, making it possible to capture a vast amount of color information when shooting. To achieve similar quality Canon added red ink and green ink, which offers high brightness and chromaticity, to the six existing inks in their inkjet printers, raising the saturation of the red and green output range by 1.6 times and 1.2 times respectively. The result is photo image output with improved depth and translucence, and color reproduction comparable to that of prints from photo film.