Abstract:
Dual connection device for memory mediums and a mobile communication terminal including the same. The dual connection device has a body portion electrically connected with a mobile communication terminal, a first receiving portion formed to the body portion for receiving therein a first memory medium, a second receiving portion formed to the body portion as to be arranged piled up to the first receiving portion for receiving therein a second memory medium, a first connection terminal installed in the first receiving portion so as to be electrically connected with a terminal of the first memory medium, and a second connection terminal installed in the second receiving portion so as to be electrically connected with a terminal of the second memory medium.
Abstract:
Provided are a system and method for searching information using synonyms. The system including: a synonym storing unit for storing synonyms; a similar Korean alphabet character elements storing unit for storing numbers and Korean alphabet character elements, or a combination of Korean alphabet character elements; a similar Korean alphabet character elements synonym creating unit for automatically creating a plurality of synonyms by combining synonym information and information on the numbers, and Korean alphabet character elements or the combination of Korean alphabet character elements, and providing the created synonyms to a querying unit; the querying unit for searching information stored in a database using synonyms stored in the synonym storing unit and a plurality of synonyms of the keyword automatically created by the similar Korean alphabet character elements synonym creating unit based on the inputted keyword.
Abstract:
A method and device for receiving a digital multimedia broadcasting (DMB) signal in a wireless terminal where an external antenna is detachable from the wireless terminal, an internal antenna is embedded in the wireless terminal, a switch connects one of the external antenna and the internal antenna to a DMB receiver. The DMB receiver receives a DMB signal through one of the external antenna and the internal antenna. A controller controls the switch to connect the internal antenna and transmit the DMB signal to the DMB receiver when the external antenna is detached from the wireless terminal and controls the switch to connect the external antenna to the DMB receiver and transmit the DMB signal to the DMB receiver, when the external antenna is attached to the wireless terminal.
Abstract:
A gray-scale representation method for a plasma display panel, which method includes arranging, in time sequence, a plurality of subfields each having a brightness weight and achieving gray-scale representation by a combination of the subfields, each subfield including an address period and a sustain period. In the gray-scale representation method, the number of sustain pulses for each subfield is determined so that a light generated from the difference of the number of sustain pulses between two adjacent gray scales can be greater than a light discharged in the address period, when the number of subfields for the higher one of the two adjacent gray scales is less than that for the lower one. The reversion of gray scales that occurs when the address light is increased as high as the sustain light can be eliminated to achieve correct gray-scale representation. A smoother gray-scale representation can be achieved with reduced power consumption by adjusting the difference of the number of sustain pulses between the two adjacent gray scales in consideration of the address light.
Abstract:
An inverted F antenna (IFA) which reduces specific absorption rate (SAR) includes a ground; an auxiliary radiator which is attached to one end of the ground and disposed along a plane direction of the ground; a radiator which lies at an interval from the auxiliary radiator in parallel and radiates electromagnetic waves; a feed which supplies current to the radiator; and a short which interconnects the radiator with the ground and discharges the current to the ground. Accordingly, the SAR can be decreased and the antenna size can be miniaturized.
Abstract:
Disclosed is an antenna capable of micro-tuning and macro-tuning for a wireless terminal, comprising: a radiator radiating electromagnetic waves; a ground connected to the radiator; at least one switching element positioned at a lengthwise region of the radiator, for shorting or opening the region of the radiator; and a voltage controlling element positioned at the radiator between the switching element and the ground, for controlling the extent of a voltage potential applied across the radiator. In accordance with the present invention, the antenna is capable of the macro-tuning between the service bands and micro-tuning for channel control within the service bands. Furthermore, the size of the antenna is significantly reduced and the antenna is installed on a circuit board in a patch type, thereby simplifying a work process.
Abstract:
An etching end point of a plasma etch is determined by defining an etch-stop condition. A layer formed on a substrate is etched using a plasma. A luminous intensity of the plasma is measured to determine a first luminous intensity. The luminous intensity is measured again after a predetermined time to determine a second luminous intensity. A determination is made whether a disturbance occurs. Compensation is applied to the measured luminous intensity if the disturbance occurs. A determination is made whether the measured luminous intensity or the compensated luminous intensity satisfies the etch stop condition.
Abstract:
An antenna for a slide-type wireless terminal device includes a radiator formed in a first body, a ground surface formed on a second body, a power feeder connected to the ground surface in the second body, a first connection part connected to the radiator in the first body and operative to come in contact with the power feeder when the first body is slidably moved, and a short-circuit wire operative to come in contact with the radiator and the ground surface when the first body is slidably moved.
Abstract:
A compound semiconductor device and method of manufacturing the same. The method includes coating a plurality of spherical balls on a substrate and selectively growing a compound semiconductor thin film on the substrate on which the spherical balls are coated. The entire process can be simplified and a high-quality compound semiconductor thin film can be grown in a short amount of time in comparison to an epitaxial lateral overgrowth (ELO) method.
Abstract:
A transmission line conversion apparatus connecting a parallel transmission line to a coplanar waveguide (CPW) is provided. To this end, the CPW including a transmission line composed of a signal line and a ground line which is formed on one surface of a dielectric substrate, and a parallel transmission line connected to the CPW, at a predetermined angle with respect to a substrate constituting the CPW, and composed of a signal line and a ground line, are proposed. In addition, the signal line of the CPW and the signal line of the parallel transmission line are connected to each other, and the ground line of the CPW and the ground line of the parallel transmission line are connected to each other. As such, by connecting the CPW to the parallel transmission line, a return loss can be minimized.