Abstract: The present invention is to provide a support for holding a housing of an electronic device, which comprises a flat, elongate base having a recess at either end, and two L-shaped members each hingedly attached to the mouth of the recess. The L-shaped members are adapted to pivot to fit its horizontal sections in the recesses for defining a first receiving space by two parallel vertical sections thereof and an intermediate portion of the base so that the housing in an upright position is adapted to be disposed in the first receiving space and clamped by the vertical sections.

Abstract: The present invention is to provide a communication system, which is adapted to employ a HTTP as a transfer protocol, and enables the VoIP device to issue required provision-request documents in XML syntax to a provisioning server of an ITSP over the Internet, the provisioning server then verifies the identification thereof. If the verification is true, the provisioning server retrieves setting parameters required to configure the VoIP device from a user database, stores the parameters in a provision-response package written in XML syntax, and sends the package back to the VoIP device. Then, the VoIP device performs a configuration on itself based on the parameters and proceeds with a registration to a call agent of the ITSP automatically.

Abstract: The present invention is to provide a power measurement system comprising a PC and a voltage meter, which comprises a power to voltage converter to receive input signals from a wireless communication product to be tested and convert the input signals into voltage signals, a voltage meter to measure a voltage value of the voltage signals, and a PC to read the measured voltage value of the voltage meter and convert the read voltage value into an actual power based on a created calibration table. As an end, a correct power measurement is obtained.

Abstract: The present invention is to provide a spectrum measurement system, which comprises a preamplifier for receiving input signals from a wireless communication device to be measured and pre-amplifying the same; a down converter coupled to the preamplifier for decreasing a frequency of the amplified signals to an IF; an IF filter coupled to the down converter for filtering the IF signals based on a predetermined frequency resolution and center frequency; a power meter coupled to the IF filter for measuring a power of the IF signals; and a PC coupled to the power meter, the PC being operative to read the measured power, convert the read measured frequency into a real frequency based on a created calibration table, and plot a frequency analysis graph with respect to the wireless communication device.

Abstract: The present invention discloses an antenna with a fixed base rotary positioning structure, which can be placed on a table or hung on a wall, comprising: a fixed base; a protrusion disposed on the fixed base and having an open end on one side; a chamber enclosed by the rest of three sides; a pivotal axial hole and an arc groove being correspondingly disposed on both sides of the inner wall of the protrusion, such that the pivotal axial hole and the arc groove precisely and pivotally coupling the pivotal axis and the protruded fixing point to the two corresponding sides at one end of the antenna, and the antenna using such pivotal axis as the rotary axis to adjust the antenna to any angle by the open end of the protrusion.

Abstract: The present invention is to provide method and apparatus for adapting a GBIC module to an Ethernet switch capable of outputting one of different voltages in which in a case of the GBIC module coupled to the Ethernet switch, a DC converter of the GBIC module is adapted to lower an input voltage thereof supplied by the Ethernet switch prior to boosting the lowered voltage to an operating voltage required by a GBIC logic circuit of the GBIC module without confirming whether the input voltage has the same value as the operating voltage. Thus, the present invention can prevent the GBIC module from not working due to low input voltage or being damaged due to high current when the GBIC module is coupled to the Ethernet switch.

Abstract: The present invention is to provide an ADSL modem for providing an IPoA, a PPPoA, or a PPPoE based dial-up networking service over Ethernet, which comprises a DHCP server coupled to at least one computer, each computer is adapted to use a DHCP provided by an OS thereof to obtain an authorized IP address and associated settings from an ISP through the DHCP server, and the DHCP server is adapted to assign the authorized IP address and the associated settings to each computer, enabling at least one computer to access the Internet without installing any driver or application program.

Abstract: The present invention discloses a miniature monopole antenna for dual-frequency printed circuit board, which individually prints a printed wire, two radiators, and a metal grounding surface on a dielectric printed wire board to form a monopole antenna. Therefore, the antenna can be operated within the dual-frequency range as specified by the IEEE 802.11a protocol and the IEEE 802.11b protocol. The monopole antenna designed in this invention not only can receive dual-frequency signals, but also can reduce the occupying volume to about one half of that of the traditional inverted L-shaped monopole antenna, which can effectively reduce the volume of the wireless communication products and comply with the trend of the compact design.

Abstract: A method for calibrating a propagation delay in a network trunk includes the step of calculating a time period Ti in a first network switch between sending a marker and receiving a trunk package acknowledgement marker from the second network switch, and a time period Tt in the second switch between receiving the trunk package and the marker and transmitting an acknowledgement marker containing the trunk package back to the first switch, the second switch appending the time period Tt to the acknowledgement marker before sending it back to the first switch. The time gap is read and a time delay caused by sending the trunk package on each channel is calculated. The second switch decodes the received trunk package and calibrates the propagation delay based on the time delay to determine a time gap between the packages in the same channel.

Abstract: The present invention discloses a miniature monopole antenna for dual-frequency printed circuit board, which individually prints a printed wire, two radiators, and a metal grounding surface on a dielectric printed wire board to form a monopole antenna. Therefore, the antenna can be operated within the dual-frequency range as specified by the IEEE 802.11a protocol and the IEEE 802.11b protocol. The monopole antenna designed in this invention not only can receive dual-frequency signals, but also can reduce the occupying volume to about one half of that of the traditional inverted L-shaped monopole antenna, which can effectively reduce the volume of the wireless communication products and comply with the trend of the compact design.

Abstract: A planar L-shaped antenna. The antenna is operable at two different frequency ranges and includes a patch line printed on top of a dielectric substrate and has one end formed as a signal feed point. A ground metal plate is printed on a bottom of the dielectric substrate. First and second radiating elements extend oppositely from another end of the patch line. The first and second radiating elements are perpendicular to the patch line and disposed above and beyond the ground metal plate for receiving signals having different frequencies respectively.

Abstract: The present invention discloses a low-cost coaxial cable fed inverted-L antenna with a structure using only one coaxial cable and extending an internal conductor outside one end of the coaxial cable to a predetermined length outside an external conductor on the other end, and then bending the coaxial cable backward in an opposite direction along the external conductor and parallel to the direction of the external conductor to extend to a predetermined length outside to define a radiating member, which doesn't require additional components or any other manufacturing procedure, and will greatly lower the production and manufacturing costs of the antenna and improve the yield rate of production.

Abstract: The present invention is to provide a processing method enabling each unit in a stacking network device to utilize the functions and the Port Role Selection procedure updtRolesBridge( ) provided by the RSTP to rapidly select the port having the best priority from the stacking network device for executing STP and the relating algorithm in order to effectively reduce the working burden of the master unit through uniformly distributing the work to the slave units, which not only greatly increase the network transmission efficiency of the stacking network system, but also greatly improve the quality and speed of the network information transmission.

Abstract: This invention is to provide a planar monopole antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; a first radiating element extended from the other end of the patch line beyond the ground metal plate and being perpendicular to the patch line and then further extended a predetermined distance in a direction parallel to the patch line toward and spaced apart from the ground metal plate; and a second radiating element operated at a high frequency projected from a side of the patch line beyond the ground metal plate and spaced apart from the first radiating element operated at a low frequency.

Abstract: The present invention is to provide a planar L-shaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; first and second radiating elements extended oppositely from the other end of the patch line, wherein the first and second radiating elements being perpendicular to the patch line and disposed above and beyond the ground metal plate for receiving signals having different frequencies respectively.

Abstract: This invention is to provide a planar monopole antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; a first radiating element extended from the other end of the patch line beyond the ground metal plate and being perpendicular to the patch line and then further extended a predetermined distance in a direction parallel to the patch line toward and spaced apart from the ground metal plate; and a second radiating element operated at a high frequency projected from a side of the patch line beyond the ground metal plate and spaced apart from the first radiating element operated at a low frequency.

Abstract: The present invention is to provide a planar double L-shaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; a first radiating element formed at the other end of the patch line and extended in a direction perpendicular to the patch line above and beyond the ground metal plate to shape as an inverted L shape; and a second radiating element extended beyond the ground metal plate to shape as an inverted L shape and spaced apart from the first radiating element, so that the first and the second radiating elements are capable of receiving signals having different frequencies.

Abstract: A cable fixing structure on a flat panel is to have an elliptical through hole on the flat panel of an electronic device enclosure, a protruding joint board is on the end of the connector of a cable, an upper and lower panel wedge each is near the top and lower portion of the elliptical through hole, wherein the shape and physical size of the joint board is equal to the elliptical through hole, the joint board is in parallel with the end of the connector, an upper and a lower joint wedges corresponding to the panel wedges are on the inner edge of the joint board. While installing the connector onto the panel, the joint board passes through the elliptical through hole enabling the upper and lower joint wedges to reach the upper and lower panel wedges by turning the connector. Thus, the connector of the cable is easily and rapidly fixed to the flat panel.

Abstract: The present invention is to provide a planar double L-shaped antenna operable at two different frequency ranges comprising a patch line printed on a top of a dielectric substrate and having one end formed as a signal feed point; a ground metal plate printed on a bottom of the dielectric substrate; a first radiating element formed at the other end of the patch line and extended in a direction perpendicular to the patch line above and beyond the ground metal plate to shape as an inverted L shape; and a second radiating element extended beyond the ground metal plate to shape as an inverted L shape and spaced apart from the first radiating element, so that the first and the second radiating elements are capable of receiving signals having different frequencies.