Power Line Communication System and Communication Device Used in the System
First Claim
1. A power line communication (PLC) Digital Subscriber Line Access Multiplexer (DSLAM), comprising:
- a first communication port unit connecting with a predetermined Internet Protocol (IP) network and receiving a data signal via the IP network;
a second communication port unit connecting with a predetermined telephone line, the telephone line being coupled with each of at least one telephone line that connects an exchange and at least one subscriber location;
a PLC converter converting the data signal into a PLC frame signal corresponding to a predetermined PLC protocol; and
a transmission control unit controlling the PLC frame signal to be transmitted to a predetermined coupling device, which is installed in each of the at least one subscriber location, via the telephone line that connects with the second communication port unit,wherein the coupling device connects with each of the telephone line and a predetermined power line, couples the PLC frame signal, which is received via the telephone line, with the power link, and transmits the PLC frame signal to at least one communication terminal that is installed in the subscriber location.
1 Assignment
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Accused Products
Abstract
A lock device having a lever is disclosed, in which the lever is released to rotate a latch bolt only if a correct electronic key is authenticated while the latch bolt is hooked over the lever at normal times. In the lock device of the present invention, having a latch bolt which is placed to rotate for opening a door once an electronic key is authenticated by its recognition or entering a password, the lock device comprises a motor rotated in one direction by a signal input after the electronic key is authenticated; a pinion assembly connected with a rotation axis of the motor and rotated by an operation of the motor; a lever having one end hooked over a projection formed in the latch bolt so as not to rotate the latch bolt at normal times, connected with the pinion assembly, and rotated by rotation of the motor to release binding state of the latch bolt once the electronic key is authenticated; and the latch bolt not rotated at normal times as its projection is hooked over the lever, and rotated as the projection is released by rotation of the lever once the electronic key is authenticated. Therefore, the lock device makes the manufacture easy and improves reliability of the operation.
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Citations
8 Claims
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1. A power line communication (PLC) Digital Subscriber Line Access Multiplexer (DSLAM), comprising:
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a first communication port unit connecting with a predetermined Internet Protocol (IP) network and receiving a data signal via the IP network; a second communication port unit connecting with a predetermined telephone line, the telephone line being coupled with each of at least one telephone line that connects an exchange and at least one subscriber location; a PLC converter converting the data signal into a PLC frame signal corresponding to a predetermined PLC protocol; and a transmission control unit controlling the PLC frame signal to be transmitted to a predetermined coupling device, which is installed in each of the at least one subscriber location, via the telephone line that connects with the second communication port unit, wherein the coupling device connects with each of the telephone line and a predetermined power line, couples the PLC frame signal, which is received via the telephone line, with the power link, and transmits the PLC frame signal to at least one communication terminal that is installed in the subscriber location. - View Dependent Claims (2, 3)
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4. A PLC coupling device installed in a subscriber location, comprising:
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a telephone line port unit connecting with a predetermined telephone line and receiving a PLC frame signal from a predetermined PLC DSLAM connected via the telephone line; a power line port unit connecting with at least one communication terminal, which is installed in the subscriber location, via a power line; and a coupling control unit coupling the PLC frame signal with the power line and transmitting the PLC frame signal to the at least one communication terminal, wherein the PLC DSLAM converts a data signal, which is received from a predetermined IP network, into a PLC frame signal corresponding to a predetermined PLC protocol, and transmits the PLC frame signal to the telephone line port unit via the telephone line. - View Dependent Claims (5)
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6. A PLC system comprising:
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a PLC DSLAM converting a data signal, which is received from a predetermined IP network, into a PLC frame signal corresponding to a predetermined PLC protocol, and transmitting the PLC frame signal to at least one subscriber location that is connected via a predetermined telephone line, the telephone line being coupled with each of at least one telephone line that connects an exchange and at least one subscriber location; and a PLC coupling device connecting with each of the telephone line and a predetermined power line, coupling the PLC frame signal, which is received via the telephone line, with the power line, and transmitting the PLC frame signal to at least one communication terminal that is installed in the subscriber location. - View Dependent Claims (7, 8)
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Specification