Network user for maintaining data and energy transmission
First Claim
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1. A local area network, comprising:
- means for transmitting data and energy throughout the local area network;
means for supplying energy to said transmitting means at a predetermined level from a central location on the local area network, wherein the energy is alternating-current voltage with a half-wave cycle for synchronizing data;
at least one network user connected to said transmitting means for sending data containing destination addresses throughout the network and for receiving data only if the destination address identifies said network user, so when the data is for said network user identified by the destination address, said network user also receives the energy with the alternating-current voltage, otherwise said network user being connected to said transmitting means merely modulates the energy on said transmitting means to the predetermined level of the local area network, wherein on failure of said energy supply means said user is converted by a network driver, into the "out of operation" state with low energy consumption, and the operation energy is maintained by an accumulator is said user, until said network driver converts the user back into the "ready for operation" state after receipt of a destination address, andsaid user coupled with UART, USART through said network driver to the network.
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Abstract
The transmission of data and energy takes place by separate or the same lines, and the users of the network do not themselves supply any energy into the network. For transmission, the users successively modulate the supplied energy. The energy consumption of the users is minimized through the data transmission procedure, in which the users are successively set into operating state and after completion of the required action automatically return into the "ready for operation" state with lower energy consumption.
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Citations
15 Claims
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1. A local area network, comprising:
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means for transmitting data and energy throughout the local area network; means for supplying energy to said transmitting means at a predetermined level from a central location on the local area network, wherein the energy is alternating-current voltage with a half-wave cycle for synchronizing data; at least one network user connected to said transmitting means for sending data containing destination addresses throughout the network and for receiving data only if the destination address identifies said network user, so when the data is for said network user identified by the destination address, said network user also receives the energy with the alternating-current voltage, otherwise said network user being connected to said transmitting means merely modulates the energy on said transmitting means to the predetermined level of the local area network, wherein on failure of said energy supply means said user is converted by a network driver, into the "out of operation" state with low energy consumption, and the operation energy is maintained by an accumulator is said user, until said network driver converts the user back into the "ready for operation" state after receipt of a destination address, and said user coupled with UART, USART through said network driver to the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A network user for maintaining data and energy transmission on a local area network, comprising:
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means for transferring energy with alternating-current voltage from the local area network to said network user; a network driver connected to said transferring means, said network driver including means for storing a source address which is unique to said network user and identifies said network user as particular network user on the local area network, an address switch for switching said network user from a reduced energy consumption state such as "ready for operation" to an energy consumption state such as "in operation", means for identifying a destination address from the local area network as the address for said particular network user by comparing the destination address with the unique stored source address, so when the compared addresses match said network driver through said address switch power-ups said network user; and a responder for transmitting a reply either by the source address stored and then the destination address, thereby taking over the access priority of the requesting, network user, or said responder starts transmission of the reply without said source address and appends to the received request command its transmitting reply with said responder forming a data-security from the transmitted reply and appending it to the reply as a termination. - View Dependent Claims (13, 14, 15)
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Specification