摘要:
A signal transmission system for a peer-to-peer optical network. The system includes an optical line terminal, an optical distribution node, and a plurality of optical network units. The optical network unit and the optical distribution node are connected in a tree distribution having an ordered relation. The optical line terminal transmits optic signals via the optical distribution node to a first ordered optical network unit, to allow the first ordered optical network unit to process the optic signals and to generate combined optic signals, which are transmitted to a next ordered optical network unit via the optical distribution node. The above steps are iterated, until a last ordered optical network unit transmits combined optic signals to the optical line terminal via the optical distribution node.
摘要:
An optical wavelength division node includes an optical splitter, a plurality of optical circulators, and a colorless light source module. The optical splitter receives and splits a downstream signal light source into a first-path and a second-path signal light source. The optical circulator in a first-order position receives and transmits the first-path signal light source to an optical network unit in a first-order position, and receives a return signal and passes it to a next optical circulator, and finally the optical circulator in a last-order position receives the return signal and transmits it. The colorless light source module receives the second-path signal light source and the return signal transmitted by the optical circulator in a last-order position, and uses the second-path signal light source to modulate the return signal to generate an upstream signal light source to be transmitted to the optical line terminal by the optical splitter.
摘要:
An optical wavelength division node includes an optical splitter, a plurality of optical circulators, and a colorless light source module. The optical splitter receives and splits a downstream signal light source into a first-path and a second-path signal light source. The optical circulator in a first-order position receives and transmits the first-path signal light source to an optical network unit in a first-order position, and receives a return signal and passes it to a next optical circulator, and finally the optical circulator in a last-order position receives the return signal and transmits it. The colorless light source module receives the second-path signal light source and the return signal transmitted by the optical circulator in a last-order position, and uses the second-path signal light source to modulate the return signal to generate an upstream signal light source to be transmitted to the optical line terminal by the optical splitter.
摘要:
A schema parser may determine one or more datasets of a database schema, wherein the datasets include one or more fields from a data source and represents data corresponding to the one or more fields. An input handler may receive a selection of one or more of the datasets via an interface. A translation engine may provide operations for refining the data of the selected datasets into a result set via a query, wherein the operations may be determined based on metadata defining relationships amongst the data sources and fields. A query engine may provide a graphical query including operational flow indicators indicating a directional flow of the query from the selected datasets with the selected operation to the result set.
摘要:
A signal transmission system for a peer-to-peer optical network. The system includes an optical line terminal, an optical distribution node, and a plurality of optical network units. The optical network unit and the optical distribution node are connected in a tree distribution having an ordered relation. The optical line terminal transmits optic signals via the optical distribution node to a first ordered optical network unit, to allow the first ordered optical network unit to process the optic signals and to generate combined optic signals, which are transmitted to a next ordered optical network unit via the optical distribution node. The above steps are iterated, until a last ordered optical network unit transmits combined optic signals to the optical line terminal via the optical distribution node.
摘要:
A foot heel massaging device is located in the heel of a shoe to massage the foot heel of a person wearing the shoe. The device consists essentially of a fixed member located fixedly in the shoe heel, a movable member located movably on the fixed member and provided with a plurality of massaging knobs, a confining member for confining the fixed member and the movable member, and two magnets located respectively in the fixed member and the movable member such that the like magnetic poles of the two magnets are opposite to each other to bring about a repulsion force to cause the movable member to move away from the fixed member at the time when the movable member is relieved of an external force exerting thereon.