Abstract:
PURPOSE: A triangle prosumer U(Universal) commerce system using and service method thereof are provided to enable a user to confirm the location of ordered products by enabling the user to rapidly and easily search information for various products. CONSTITUTION: A central server(400) stores product information in online. The central server orders materials by searching the product information and publicized images. A neighborhood entrusted shop(300) sells and arranges a part of products. The location information of the product transmits and receives the state information and location information of the product when a smart delivery box(500) stores the products. The smart delivery box takes charge of the delivery service of the products.
Abstract:
PURPOSE: A triangle prosumer ultimate commerce system and service method thereof are provided to rapidly deliver ordered products by enabling a customer to rapidly search information for various products and easily purchase the products. CONSTITUTION: A central server(400) stores product information in online. The central server stores publicized images related to products. A customer(200) orders and searches the desired products by connecting to the central server. Plural manufacturers(100) register the product information and the publicized image by connecting to the central server. A neighborhood entrusted shop(300) sells the products by arranging a part of the products. The neighborhood entrusted shop delivers the ordered product to the customer.
Abstract:
A circuit for generating constant transconductance using an on-chip resistance equivalent circuit in place of an off-chip resistor. The on-chip resistance equivalent circuit includes first and second MOSFETs. The first MOSFET is configured to operate in a triode region for generating a first resistance. The second MOSFET is configured to operate in a triode region and to mirror the first resistance of the first MOSFET, thereby generating a second resistance. The second resistance generated by the second MOSFET is then used for biasing a transconductance generating circuit to provide a biasing voltage with constant transconductance.
Abstract:
The present invention relates to a method for manufacturing a transparent substrate, and to an LED display board using the transparent substrate. More particularly, the present invention relates to a method for manufacturing a transparent substrate, in which a glass surface is screen-printed with transparent conductive ink, and sequentially sintered in air and nitrogen environments to reduce surface resistance and improve light transmittance. The method for manufacturing a transparent substrate according to the present invention comprises a step of screen-printing one side of a transparent glass with transparent conductive ink containing conductive nanopowder as a filler to pattern a conductive film electrode onto one side of the glass, a first sintering step of heating the glass which is patterned with the conductive film electrode by the screen-printing, in the air, to sinter the conductive film electrode, and a second sintering step of heating the glass on which the conductive film electrode is firstly sintered in a nitrogen gas to sinter the conductive film electrode. The LED display board using the transparent substrate according to the present invention is configured such that LEDs are arranged on one surface of the transparent substrate on which the conductive film electrode is formed by the above-described method, and said LEDs are connected to the conductive film electrode.
Abstract:
The present invention is the system for providing secure access to certified and authenticated electronic documents. The system enables authenticating or certifying authorities (103) to make available electronic documents in a secure repository (101). The system provides for online viewing of documents without their certification marks and direct printing of documents to a printer remote from the repository (101) in a secure manner.
Abstract:
A circuit for generating constant transconductance using an on-chip resistance equivalent circuit in place of an off-chip resistor. The on-chip resistance equivalent circuit includes first and second MOSFETs. The first MOSFET is configured to operate in a triode region for generating a first resistance. The second MOSFET is configured to operate in a triode region and to mirror the first resistance of the first MOSFET, thereby generating a second resistance. The second resistance generated by the second MOSFET is then used for biasing a transconductance generating circuit to provide a biasing voltage with constant transconductance.
Abstract:
The present invention is the system for providing secure access to certified and authenticated electronic documents. The system enables authenticating or certifying authorities (103) to make available electronic documents in a secure repository (101). The system provides for online viewing of documents without their certification marks and direct printing of documents to a printer remote from the repository (101) in a secure manner.
Abstract:
A biasing circuit is described for a radio frequency (RF) amplifier that provides a stable signal source. The described bias circuit has two or more transistors coupled in at least one feedback loop, with a buffering transistor providing the output biasing signal and buffering the feedback loops from the output of the of the biasing circuit. This arrangement provides thermal compensation, reduces fluctuations in the feedback loops that stabilize the biasing circuit, and allows for higher biasing current demand.