1. A portable server for sending and receiving data to and from a plurality of terminal devices, comprising:
a wireless communication unit for sending and receiving the data via wireless communication;
a radio field intensity input unit that allows the radio field intensity of the wireless communication unit to be input using an interactive interface, having a plurality of keys, located on the outer surface of the portable server;
a memory unit for storing the data; a battery in a housing for supplying power to an internal circuit, the wireless communication unit, and the memory unit;
an authentication unit that compares a stored password with a password entered at power-on and allows the data to be sent and received only when the passwords match; and
a supply circuit adapted to distribute power to components of the portable server and adapted to draw power from a second power supply when the portable server is connected to a cradle, and to draw power from the battery when the portable server is not connected to the cradle.
2. The portable server according to claim 1, further comprising a power-off unit that stores, in the memory unit, the state of the internal circuit and shuts off the supply of power when the battery voltage drops to a certain level.
3. The portable server according to claim 1, wherein the supply circuit provides power from the second power supply to charge the battery.
4. The portable server according to claim 1, further comprising a wired communication unit for sending and receiving the data via a wired network.
5. The portable server according to claim 1, wherein the supply circuit includes a protection circuit, a charge monitoring circuit, and a voltage stability circuit.
6. The portable server according to claim 5, wherein power from an AC adapter is routed through the protection circuit to the charge monitoring circuit and the voltage stability circuit.
7. The portable server according to claim 6, wherein the protection circuit shuts of high voltage input caused by misuse of the AC adapter.
8. The portable server according to claim 1, wherein the power supply circuit provides voltage at two different power levels.
9. The portable server according to claim 1, wherein the portable server is configured to create a wireless network with at least one local terminal device upon start-up.
10. The portable server according to claim 1, wherein the portable server is configured to create a wireless network with a plurality of terminal devices upon start-up.
11. A portable server according to claim 1, wherein the portable server is configured to communicate with terminals on the wired LAN via a wired LAN interface provided by the cradle when the portable server is coupled to the cradle.
12. A portable server according to claim 1, wherein a radio field intensity input unit allows a radio field intensity to be input using an interface, having a plurality of keys, located on the outer surface of the portable server.
13. A portable server according to claim 12, wherein the radio field intensity input unit allows the radio field intensity to be input by a user using the interface, and the interface provides the user with a plurality of selectable preset radio intensities corresponding to an effective distance of the transmission at each of the plurality of preset radio intensities.
14. A portable server according to claim 12, wherein when the user selects the radio field intensity, the radio field intensity input unit provides the user with a list of the effective distances of transmission at the preset radio intensities.
15. A portable server according to claim 1, wherein the portable server is in communication with at least one other portable server form a network, and the portable servers are configured to send and receive data directly with each other.
16. A portable server according to claim 15, wherein each of the at least one other portable server in the network is in communication with at least one terminal.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A large capacity wind power generator, comprising:
an outer rotor including an upper partitioning plate having a plurality of spokes formed along a circular circumference of the upper partitioning plate at equal intervals and a side partitioning plate formed on one side surface of the outer rotor, the outer rotor having a lower surface and the other side surface which are open; and
a windmill formed inside the outer rotor to be rotated by wind flowing through the outer rotor;
wherein the side partitioning plate is formed to have an area that is smaller than a half of the entire circumferential area of the outer rotor, and spaces between the respective spokes are open so as to facilitate an inflow of the wind through the side surface of the outer rotor.
2. The large capacity wind power generator according to claim 1, further comprising a wind indicator plate, which is rotatable according to the wind direction, installed on an upper side of the upper partitioning plate so as to position the outer rotor in a wind blowing direction.
3. The large capacity wind power generator according to claim 1, wherein the windmill comprises:
blades which are rotated by the wind flowing through wind inlets;
a center post which prevents movement of the blades in left and right directions; and
upper and lower surface plates placed on upper and lower sides of the blades, respectively;
wherein the blades extend in a radial direction from the center post, and each of the blades is in the shape of an arc.
4. The large capacity wind power generator according to claim 3, wherein when the wind blows and the wind indicator plate is positioned in the rear, the side partitioning plate, which has an area that is \xbc of the entire circumferential area of the outer rotor, is positioned in the counterclockwise direction based on the wind blowing direction.
5. The large capacity wind power generator according to claim 4, further comprising:
a bottom frame formed on the bottom of the wind power generator;
a middle frame installed on an upper side of the bottom frame, being apart from the bottom frame, and formed of a plurality of shafts;
an upper frame provided on an upper side of the middle frame, being apart from the middle frame;
a plurality of fixing shafts extending upward from edges of the bottom frame and connected up to edges of the upper frame through the middle frame; and
a support block extending from the bottom frame up to a height between the middle frame and the upper frame to support the outer rotor and the windmill;
wherein the outer rotor and the wind indicator plate are positioned between the support block and the upper frame, and the support block has a horizontal sectional area that is equal to that of the outer rotor.
6. The large capacity wind power generator according to claim 5, further comprising:
a first bearing formed in the center of the upper surface of the upper frame;
a third bearing formed in the center of the upper surface of the middle frame; and
a first rotary shaft which vertically penetrates the windmill and is inserted into the first bearing and the third bearing;
wherein the first rotary shaft is rotated as the blades are rotated.
7. The large capacity wind power generator according to claim 6, further comprising:
a second bearing formed in the center of the lower surface of the upper frame; and
a second rotary shaft which is inserted into the second bearing and extends up to the center of the upper partitioning plate;
wherein the second bearing has a diameter that is larger than that of the first bearing and the third bearing.
8. The large capacity wind power generator according to claim 7, wherein the wind indicator plate comprises:
a plurality of vertical plates formed at a height that corresponds to the second rotary shaft and positioned in parallel to each other, being apart from each other;
a first horizontal plate connecting the upper sides of the vertical plates;
a second horizontal plate connecting the middle sides of the vertical plates; and
a third horizontal plate connecting the lower sides of the vertical plates;
wherein the front end portions of the vertical plates, the first horizontal plate, the second horizontal plate, and the third horizontal plate are open.
9. The large capacity wind power generator according to claim 8, wherein the odd-numbered vertical plates are formed to extend backward from the front end portions of the upper partitioning plate to the end points of the upper frame.
10. The large capacity wind power generator according to claim 9, wherein on the upper surface of the support block, a plurality of windmill supports, each of which includes an elastic member that absorbs impact and a first roller positioned on the upper side of the elastic member, and a plurality of outer rotor supports, each of which includes a second roller, are provided.
11. The large capacity wind power generator according to claim 10, further comprising:
a main gear provided below the lower surface plate to rotate simultaneously with the first rotary shaft;
a first acceleration gear rotating in engagement with the main gear;
a second acceleration gear rotating in engagement with the first acceleration gear; and
a support gear rotating in engagement with the second acceleration gear;
wherein as the second acceleration gear is rotated, the power generator provided in a generator case that is positioned between the bottom frame and the middle frame outputs AC current.
12. The large capacity wind power generator according to claim 2, wherein the windmill comprises:
blades which are rotated by the wind flowing through wind inlets;
a center post which prevents movement of the blades in left and right directions; and
upper and lower surface plates placed on upper and lower sides of the blades, respectively;
wherein the blades extend in a radial direction from the center post, and each of the blades is in the shape of an arc.
13. The large capacity wind power generator according to claim 12, wherein when the wind blows and the wind indicator plate is positioned in the rear, the side partitioning plate, which has an area that is \xbc of the entire circumferential area of the outer rotor, is positioned in the counterclockwise direction based on the wind blowing direction.
14. The large capacity wind power generator according to claim 13, further comprising:
a bottom frame formed on the bottom of the wind power generator;
a middle frame installed on an upper side of the bottom frame, being apart from the bottom frame, and formed of a plurality of shafts;
an upper frame provided on an upper side of the middle frame, being apart from the middle frame;
a plurality of fixing shafts extending upward from edges of the bottom frame and connected up to edges of the upper frame through the middle frame; and
a support block extending from the bottom frame up to a height between the middle frame and the upper frame to support the outer rotor and the windmill;
wherein the outer rotor and the wind indicator plate are positioned between the support block and the upper frame, and the support block has a horizontal sectional area that is equal to that of the outer rotor.