Television

Abstract

The invention provides a television which is applicable to the television field and comprises a processor, a carrier coupling circuit used for receiving demodulated signals sent by a low-voltage power line, a filter circuit and a signal demodulation circuit, wherein the filter circuit is connected at the output end of the carrier coupling circuit and used for performing filter processing for the demodulated signals, and the signal demodulation circuit is connected with the filter circuit and used for demodulating originally modulated signals from the filtered demodulated signals and sending the signals to the processor for decoding. In the television, power line carriers are used for receiving the modulated signals transmitted by the power line in communication mode, effective data information is output to a television system through the carrier coupling circuit, the filter circuit and the demodulation circuit, and data are decoded at a television end and displayed on a television screen. Transmitting of all signals can be completed simply through the power line, so that wires for connecting the television and other devices are saved. Except for a power grid, no other signal networks are needed to be added so that national network covering cost is saved. Compared with optical fiber communication and open wire communication, the television is low in cost.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a television. Background technique [0002] Low-voltage power line carrier communication is a special communication method that uses low-voltage distribution lines (380 / 220V subscriber lines) as the information transmission medium to transmit analog or digital signals for voice or data through carrier waves. [0003] As a dedicated network for power transmission, the power grid is one of the national basic networks. Its network construction quality, mechanical strength, safety, economic and technical indicators, etc. are rationally optimized after repeated demonstrations. Its wide coverage and large capacity are unmatched by any network. Therefore, the power grid is a rare resource of high quality. Power line carrier technology has been developed and applied in China for many years, and the technical standards and management regulations have been quite complete...

AI Technical Summary

Problems solved by technology

[0004] However, the power network has not been effectively utilized. The existing TV signal transmission requires a dedicated network channel. Compared with using the power network communication, it is equivalent to re-distributing the transmission network again, which is a serious waste of resources; the current existing Few household electrical appliances use power lines as signal channels, which creates a bottleneck in the development of power carrier technology

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