Multimedia information network on power line in village level

Abstract

Multimedia information station in village level is connected to multimedia transmitter receiver set of containing modem of power line carrier in village station. Using capacitance of isolation network connects power line. Through capacitance of isolation network, power line connects multimedia transmitter receiver set at user's sides. Normalized circuit for connecting to household or outdoor modem in high frequency for connecting to household is adopted for power line carrier. Through capacitance of isolation network for entering to household, power line carrier is connected to user's multimedia transmitter receiver set of containing modem of power line carrier. Guaranteeing power supply, the invention can accommodate TV, broadcasting, computer network, and telephone through multiplexing wideband modulation. The information network is compatible mode between digital and analog or in digital mode. Features are: low initial construction cost, and low maintenance cost.

Description

technical field [0001] The invention relates to a wired communication technology, in particular to a village-level power line multimedia information network. Background technique [0002] The use of low-voltage power lines to open power line carrier intercoms has long existed. Power line communication does not need to lay lines again, and the cost is low and the implementation is fast. It is a very promising communication method. In the early 1970s, I invented the "power line multiplexed telephone network system", but its technology was outdated, and its frequency band was very narrow, so it could not transmit digital telephone, radio and television, and broadband computer to the Internet. In particular, the power lines in many rural areas are not standardized, especially the household power lines are not standardized, which directly affects the promotion of power line communication in rural areas. Contents of the invention [0003] In order to make up for the above short...

AI Technical Summary

Problems solved by technology

In the early 1970s, I invented the "Power Line Multiplexed Telephone Network System", but its technology was outdated, and the frequency band was very narrow, so it could not transmit digital telephone, radio and television, and broadband computer Internet access.

In particular, the power lines in many rural areas are not standardized, especially the household power lines are not standardized, which directly affects the promotion of power line communication in rural areas

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