In today's world based on consumption, it is difficult to find someone who does not own a cell phone. In addition to making phone calls and text messages from mobile phones currently used for a variety of purposes. Most cell phones today includes features like cameras, music players, and even programs that can operate on the shares.
One of the best features provided by cell phones is the ability to connect to the internet which has opened up a world of possibilities in mobile phone communications.
When you are having a conversation over the phone, wouldn't it be amazing to see the person at the same? This is now possible through video conferencing. Video phone calls have been possible since the 1970's but are surely coming of age now with the introduction of 3G technology.
3G technology, while the third generation mobile technology that enables high-speed data transmission over fiber optic networks. 3G is definitely a step up from its predecessor, 1G and 2G technology uses analog technology and digital.
When the first video phones were introduced in the market, they could not be used commercially because of their high price and the amount of connections that they required in order to function. This was solved to a certain extent by technology that compressed the audio and video thereby reducing the amount of external connections. However the compression affected the quality of the audio and video.
Webcams also became popular in enabling video conversations. But these are not as portable as a phone and require the user to install software. However the newer models of laptops now include a webcam in their original design.
Transmitting a digital video implies sending a greater amount of data as compared to transmitting audio. This is a major challenge for a cell phone which sends information through radio signals and has only a limited amount of bandwidth to work with. Thus even with powerful 3G networks it is impractical to send individual bits of information. Instead the video is compressed thereby reducing the digital information into a manageable size. The phone at the receiving end then simply has to decode the file and expand it.
Through 3G networks, the quality of the video does not suffer as much as it would with any other network. This is because files transferred over 3G networks employ better spectral efficiency and thus get the most out of the available bandwidth. An application like this would generally use up a lot of power. But 3G phones have inbuilt microchips that can compress video in real-time without using up too much of the phone's battery.
3G technology is relatively new to the Indian Market, but will soon make its mark with the large number of private companies that will soon release their services.
One of the best features provided by cell phones is the ability to connect to the internet which has opened up a world of possibilities in mobile phone communications.
When you are having a conversation over the phone, wouldn't it be amazing to see the person at the same? This is now possible through video conferencing. Video phone calls have been possible since the 1970's but are surely coming of age now with the introduction of 3G technology.
3G technology, while the third generation mobile technology that enables high-speed data transmission over fiber optic networks. 3G is definitely a step up from its predecessor, 1G and 2G technology uses analog technology and digital.
When the first video phones were introduced in the market, they could not be used commercially because of their high price and the amount of connections that they required in order to function. This was solved to a certain extent by technology that compressed the audio and video thereby reducing the amount of external connections. However the compression affected the quality of the audio and video.
Webcams also became popular in enabling video conversations. But these are not as portable as a phone and require the user to install software. However the newer models of laptops now include a webcam in their original design.
Transmitting a digital video implies sending a greater amount of data as compared to transmitting audio. This is a major challenge for a cell phone which sends information through radio signals and has only a limited amount of bandwidth to work with. Thus even with powerful 3G networks it is impractical to send individual bits of information. Instead the video is compressed thereby reducing the digital information into a manageable size. The phone at the receiving end then simply has to decode the file and expand it.
Through 3G networks, the quality of the video does not suffer as much as it would with any other network. This is because files transferred over 3G networks employ better spectral efficiency and thus get the most out of the available bandwidth. An application like this would generally use up a lot of power. But 3G phones have inbuilt microchips that can compress video in real-time without using up too much of the phone's battery.
3G technology is relatively new to the Indian Market, but will soon make its mark with the large number of private companies that will soon release their services.
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