The Development of Videophone

Published:2010/7/14 19:44:00 Author:Li xiao na From:SeekIC

Being the necessary communication tool, telephone is welcomed by people all over the world for its convenience and portability; however, people can not see each other through the ordinary device. The desire for seeing each other becomes become stronger and stronger. The videophone is utilized by connecting with the public telephone network. The moving image of people is displayed via this device; however, the new device has not widely applied for its high price recently years. With the rapid development of micro electro technology and the wide application of large scale integrated circuit, the new device will play an important role in the future.

The new device is belonging to the multimedia communication, which has visible conference system. The system makes it not only suitable for family life, but also ideal for business activities, education, monitoring and scientific research. According to the different information transmission, the new device can be divided into public telephone network type, integrated service digital network type and special network type. The video phone of public telephone network type can transmit ten to fifteen roll of image per second; while the integrated service digital network type transmits fifteen roll of image per second. The video phone products can also be divided into personal computer related device and the special video phone. The personal computer related device should have other equipments, such as camera, amplifier and microphone, while the special video phone can access the family through the telephone line directly as well as the traditional device. The special video phone will have a large market in the future because the ordinary phones are very popular nowadays.

The new device develops rapidly in the developed country, especially after the announcement of international videophone standards. Many standard devices were released, and entered the family in America, Japan and German. Some limitations still make it hard to be popular in China, but the application rate in communities and families is becoming higher. Some manufacturers in China have developed new products which use the advanced compression technology to connect the new device with telephone line together. People all over the world will pursue the advanced the technology with no stop, therefore, the video phone is able to enter the ordinary families in the near future. The related integrated circuit is Z02922.

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