Patent ID: 6349123
Filing Date: 2002-02-19
Classification: H04Q

Abstract:
An asymmetric data transmission apparatus using asymmetric digital subscriber lines, which connects a high-speed data network to telephone subscriber lines in response to a demand of a subscriber, said apparatus comprising:a plurality of subscriber line connectors which are respectively connected to said telephone subscriber lines, which respectively comprise activation sensors that receive activation signals from remote units via said telephone subscriber lines, and which respectively receive output signals from said remote units and output corresponding received analog signals, wherein said activation signals are requested from said remote units to be respectively connected to said high-speed data network, and wherein a particular subscriber line connector inputs a particular output signal from a particular remote unit via a particular telephone subscriber line and outputs a particular received analog signal; a plurality of subscriber modems which are respectively connected to digital lines of said high-speed data network, which respectively modulate output digital signals transmitted from said high-speed data network via said digital lines into output analog signals, and which respectively demodulate input analog signals into input digital signals and supply said input digital signals to said high speed network, wherein a particular subscriber modem inputs a particular input analog signal and outputs a particular input digital signal; and a connection circuit which selectively connects said particular subscriber modem to said particular subscriber line connector and which inputs said particular received analog signal and outputs said particular input analog signal, wherein said connection circuit comprises: a subscriber line switching circuit which is operatively coupled between said subscriber line connectors and said subscriber modems and which selectively connects said particular subscriber line connector to said particular subscriber modem; and a line connection controller which is coupled to said subscriber line connectors, which activates said particular subscriber modem by outputting a connection control signal when a particular activation signal is sensed by a particular activation sensor of said particular subscriber line connector, and which outputs a first switching control signal to said subscriber line switching circuit to instruct said subscriber line switching circuit to connect said particular subscriber modem to said particular subscriber line connector, wherein said line connection controller is operatively coupled to said subscriber modems, wherein said particular subscriber modem outputs a connection release request signal when a communication between said particular subscriber modem and said particular subscriber line connector has ended, and wherein said line connection controller outputs a second switching control signal to instruct said subscriber line switching circuit to disconnect said particular subscriber modem and said particular subscriber line connector.