Abstract: A semiconductor package comprise a downset has a first end coupled to a connection portion and a second opposite end electrically coupled to a lead of a lead frame; and an adhesion layer disposed between the lead and the second end of the downset to allow adhesion therebeween; wheiren the downset is bent in a non-right angle at the first end thereof such that a bottom face of the second end of the downset is tilted toward a top face of the lead and thus a first side of both sides of the bottom face is closer to the top face of the lead than a second side opposite the first side, wherein a first trap region is defined between a side face of the second end at the first side and the top face of the lead to trap therein an adhesion material of the adhesion layer, wherein a second trap region is defined between the bottom face of the second end and the top face of the lead to trap therein an adhesion material of the adhesion layer.

Abstract: Provided is a method for inputting household accounting data for double-entry bookkeeping, the method comprising steps of: a user device 200 which has a household accounting program in a double-entry bookkeeping scheme installed therein and runs the household accounting program, (1) providing a questionnaire for inputting a property overview; (2) receiving a response to the provided questionnaire; (3) automatically inputting property overview data obtained by processing the received response into a financial status of a user in accordance with a double-entry bookkeeping form; and (4) updating the financial status of the user from income or expense data that is received, wherein in (1), an owner item including a person concerned, family members, and a joint ownership is provided together with questions of the questionnaire, and a property owner is allowed to be selected from the owner item.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: A location tracking method in a coordinator-based wireless network is provided. The location tracking method in a coordinator-based wireless network includes transmitting a first frame including its own identifier and time information to the wireless network by a device associated with the wireless network in order to disclose its location information; and receiving a second frame including the location information of the device transmitted from the wireless network by the device, as a response to the first frame.

Abstract: A location tracking method in a coordinator-based wireless network is provided. The location tracking method in a coordinator-based wireless network includes transmitting a first frame including its own identifier and time information to the wireless network by a device associated with the wireless network in order to disclose its location information; and receiving a second frame including the location information of the device transmitted from the wireless network by the device, as a response to the first frame.

Abstract: A method of allocating frequency subbands in an ultrawideband (UWB) wireless communication system and an apparatus adopting the same are provided. The method of allocating frequency subbands to a device in a communication system, the method including: (a) determining whether usage of a first frequency band including upper frequency subbands is necessary; and (b) if it is determined that the usage of the first frequency band is necessary, not setting usage permission for the first frequency band to the device and not granting access to the first frequency band if a request for usage of the first frequency band is received from the device. When generation of a new piconet is necessary or generation of a new piconet is requested in a multi-piconet environment, since subbands of a high frequency group are allocated through negotiation, frequency resources are efficiently managed.

Abstract: A location tracking method in a coordinator-based wireless network is provided. The location tracking method in a coordinator-based wireless network includes transmitting a first frame including its own identifier and time information to the wireless network by a device associated with the wireless network in order to disclose its location information; and receiving a second frame including the location information of the device transmitted from the wireless network by the device, as a response to the first frame.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: A method of allocating frequency subbands in an ultrawideband (UWB) wireless communication system and an apparatus adopting the same are provided. The method of allocating frequency subbands to a device in a communication system, the method including: (a) determining whether usage of a first frequency band including upper frequency subbands is necessary; and (b) if it is determined that the usage of the first frequency band is necessary, not setting usage permission for the first frequency band to the device and not granting access to the first frequency band if a request for usage of the first frequency band is received from the device. When generation of a new piconet is necessary or generation of a new piconet is requested in a multi-piconet environment, since subbands of a high frequency group are allocated through negotiation, frequency resources are efficiently managed.

Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.

Abstract: A method of allocating frequency subbands in an ultrawideband (UWB) wireless communication system and an apparatus adopting the same are provided. The method of allocating frequency subbands to a device in a communication system, the method including: (a) determining whether usage of a first frequency band including upper frequency subbands is necessary; and (b) if it is determined that the usage of the first frequency band is necessary, not setting usage permission for the first frequency band to the device and not granting access to the first frequency band if a request for usage of the first frequency band is received from the device. When generation of a new piconet is necessary or generation of a new piconet is requested in a multi-piconet environment, since subbands of a high frequency group are allocated through negotiation, frequency resources are efficiently managed.

Abstract: A location tracking method in a coordinator-based wireless network is provided. The location tracking method in a coordinator-based wireless network includes transmitting a first frame including its own identifier and time information to the wireless network by a device associated with the wireless network in order to disclose its location information; and receiving a second frame including the location information of the device transmitted from the wireless network by the device, as a response to the first frame.

Abstract: A method and apparatus for ultra wideband (UWB) communication are provided. The method includes generating a UWB signal having different types of data segments composed of at least one bit, the data segments being mapped to different central frequencies according to the types of the data segments, transmitting the UWB signal to a device through a wireless medium, receiving, by the device, the UWB signal transmitted through the wireless medium, and determining a data segment mapped to a central frequency of the received UWB signal.

Abstract: A method and apparatus for Ultra Wideband (UWB) communication, wherein in a UWB transmission method, a codeword stream is generated by performing spread spectrum used in Direct Sequence Code Division Multiple Access (DS CDMA) on a bitstream, followed by performing Orthogonal Frequency Division Multiplexing (OFDM) modulation .on the codeword stream. In a UWB reception method, UWB signals are received and subjected to UWB demodulation to obtain OFDM signals. The obtained OFDM signals are subjected to OFDM demodulation to obtain a codeword stream. Then, spread spectrum used in the DS CDMA is performed on the codeword stream, thereby generating a bitstream. The method and apparatus provide UWB communication having characteristics of both of Multi-Band OFDM (ODM) and Direct Sequence Code Division Multiple Access (DS CDMA).

Abstract: A method for multi-band ultra wide band (UWB) communication of a frequency hopping type. The method includes requesting a piconet coordinator (PNC) of a piconet to allocate a time, at which data is transmitted, according to a predetermined PNC sequence using frequency hopping. Information regarding the time, which is allocated by the PNC for data transmission, is received according to the PNC sequence using the frequency hopping. Then, data is transmitted to a predetermined device according to the information regarding the time allocated by the PNC for data transmission. Since a mechanism needed by a medium access control (MAC) layer for the multi-band UWB communication of the frequency hopping type is provided, the multi-band UWB communication of the frequency hopping type is accomplished.

Abstract: A method of allocating frequency subbands in an ultrawideband (UWB) wireless communication system and an apparatus adopting the same are provided. The method of allocating frequency subbands to a device in a communication system, the method including: (a) determining whether usage of a first frequency band including upper frequency subbands is necessary; and (b) if it is determined that the usage of the first frequency band is necessary, not setting usage permission for the first frequency band to the device and not granting access to the first frequency band if a request for usage of the first frequency band is received from the device. When generation of a new piconet is necessary or generation of a new piconet is requested in a multi-piconet environment, since subbands of a high frequency group are allocated through negotiation, frequency resources are efficiently managed.

Abstract: Provided are a method and system for ultra wideband (UWB) wireless communication using frequency band modulation (FBM). The method includes grouping digital data in unit of a predetermined number n of bits to produce bit groups and modulating the bit groups to generate UWB signals of m subbands having different center frequencies mapped according to the type of each bit group, transmitting the generated UWB signals over at least one wireless channel, and receiving the UWB signals transmitted over the wireless channel(s) and demodulating the received USB signals into digital data using a predetermined demodulation method. The system includes a transmitter and a receiver that together carry out the method. The method and system for UWB communication using multiple bands enable high rate data transmission.