Abstract: A wiring substrate for a semiconductor chip includes a substrate having a first face and a second face opposite to the first face. The substrate has a window from the first face to the second face that exposes chip pads of a semiconductor chip adherable to the first face. A first bonding pad is arranged on the second face along a side portion of the window. The first bonding pad is connected to a bonding wire drawn from the chip pad through the window at a predetermined angle with respect to the side portion. A second bonding pad is adjacent to the first bonding pad on the second face. The second bonding pad includes an end portion having an inclined side portion at an angle corresponding to the drawn angle of the first bonding wire for avoiding an overlap of the second bonding pad with the first bonding wire.

Abstract: A visible light communication apparatus of the present invention includes: a target signal receiver filtering only a signal having a target wavelength from a visible light received signal received from a transmitting terminal; a signal generator judging a reception quality of the visible light received signal by using characteristics of the signal having the target wavelength and generating a visible signal by using at least one light source having a wavelength different from the target wavelength in accordance with the reception quality; and an optical signal transmitter transmitting the signal having the target wavelength for transmitting data together with the visible signal and changing a light emitting color of a visible light transmitted signal.

Abstract: An apparatus and method of variable bandwidth multi-codec quality of service (QoS) control are provided. The apparatus for controlling the QoS of a variable bandwidth multi-codec includes: a network state detection unit detecting a network state including at least one of a packet loss ratio, a packet loss interval, and a packet delay time based on an RTP packet transmitted to and received from a destination for which a call connection is established; and a codec control unit updating a transmission rate by comparing the detected resultant value with an already set reference value and increasing or decreasing the transmission rate, and controlling the variable bandwidth multi-codec to code data with the updated transmission rate. According to the apparatus and method, data can be coded with a codec transmission rate suitable for a network state identified during a voice call after the call is set up.

Abstract: The present invention manages media gateway control (megaco) protocols according to changes of lower layer network protocol by implementing the megaco package in the network adaptor. A method for managing the megaco protocols by using a network adaptor includes steps of: a) requesting an installation of a megaco protocol package to a network adaptor; b) determining whether the megaco protocol exists in a network protocol table; c) adding a new protocol in the network protocol table; d) searching a specific megaco protocol package in the megaco protocol package list by using the specific package ID and connecting the specific megaco protocol package; and e) installing the megaco protocol packages and the specific megaco protocols, and managing the megaco protocols.

Abstract: Provided are a method for controlling errors of an Internet fax data according to the statue of a network by using a receiver report (RR) message in a real-time transport control protocol (RTCP) and a gateway to which the method is applied. Therefore, transmission errors are reduced and a transmission speed of a fax data is improved in transmitting a fax data over the Internet. The provided method includes receiving a T.38 fax data for analyzing a predetermined QoS motoring data of the T.38 fax data and generating status information, transmitting the status information to a gateway which has transmitted the T.38 fax data, receiving the status information for analyzing a packet loss of the transmitted T.38 fax data based on the status information, and increasing or decreasing a secondary message sequence length based on an analysis result. The provided method can control errors of a T.38 packet in real time, according to the status of a network, in transmitting a T.38 fax data over the Internet.

Abstract: A media-gateway controller for call set-up processing when different codecs are used and a method therefor are provided. A storage unit stores a codec conversion table indicating a relationship between a first codec and a second codec in conversion from the first codec to the second codec. A receiver receives first call setting data including codec data of a caller from the caller and receives first call response data including codec data of a callee from the callee as a response to second call setting data having been transmitted to the callee. A data transformer searches the codec conversion table for a first codec using the caller's codec data as an index and adds a second codec corresponding to the searched first codec to the first call setting data to generate the second call setting data.

Abstract: The present invention relates to a method of controlling common call connection and a media gateway for executing the method, which are capable of performing call connection control without a change in a control procedure under different protocols and the interworking of the different protocols. In the method of the present invention, each of a plurality of termination points connected by a call in the media gateway, each of a plurality of multimedia services transmitted and received between the terminations through connection setup of the call and each of a plurality of physical resources per multimedia service in the multimedia are defined as a termination, a stream and a channel, respectively, a call processing request based on one of various media gateway control protocols is mapped into a model defined as described above, and resource allocation, connection setup or release with respect to a channel belonging to a call and a termination are requested according to the type of the call processing request.

Abstract: Disclosed is a system and method for expandibly operating protocol PDU (Protocol Data Unit) encoding/decoding blocks communicating with a protocol executing block in the same protocol. With at least two types of protocol PDU encoding/decoding blocks for data communication in the same protocol, the protocol executing block does not implement the execution of protocol PDUs independently according to the respective encoding/decoding methods, but converts the information of the protocol PDU encoding/decoding block into that of the protocol executing block using a protocol PDU common data structure disposed between the protocol PDU encoding/decoding blocks and the protocol executing block.

Abstract: A method and apparatus for controlling a variable bit-rate voice codec are provided. The method of controlling the variable bit-rate voice codec may include: extracting calling capability of terminals that request a new call to be made; extracting network parameters from existing calls in the network through an exchanged packet; measuring voice quality of the existing calls based on the extracted network parameters; and determining whether to permit a new call to be made based on the measured voice quality and the calling capability. Accordingly, it is possible to secure QoS of a voice service between terminals by adjusting a transmission rate of the variable bit-rate codec based on transmission capability of a network.

Abstract: Provided is a transmission apparatus for matching sound quality measurement sections of a variable bandwidth multi-codec. The apparatus includes a measurement section setting unit setting a measurement section, which is to be measured for sound quality, in units of time; a first conversion unit converting the measurement section into a measurement section in units of samples; and an information synthesis unit synthesizing information regarding the measurement section in units of samples with a digital original sound and outputting the synthesis result. In addition, provided is a method of matching a measurement section of a reference sound, based on which the end-to-end sound quality measurement of the variable bandwidth multi-codec is performed, and a measurement section of a sound produced by the variable bandwidth multi-codec in a real-time Internet multimedia service. Therefore, distortion of measurement results due to un-matching measurement sections can be reduced.

Abstract: Provided are a method and apparatus for measuring sound quality in a variable band multi-codec.

Abstract: Provided are a method for controlling errors of an Internet fax data according to the statue of a network by using a receiver report (RR) message in a real-time transport control protocol (RTCP) and a gateway to which the method is applied. Therefore, transmission errors are reduced and a transmission speed of a fax data is improved in transmitting a fax data over the Internet. The provided method includes receiving a T.38 fax data for analyzing a predetermined QoS motoring data of the T.38 fax data and generating status information, transmitting the status information to a gateway which has transmitted the T.38 fax data, receiving the status information for analyzing a packet loss of the transmitted T.38 fax data based on the status information, and increasing or decreasing a secondary message sequence length based on an analysis result. The provided method can control errors of a T.38 packet in real time, according to the status of a network, in transmitting a T.38 fax data over the Internet.

Abstract: Provided is a method and apparatus for minimizing the number of transcodings between network devices in a multi-network multi-codec environment. The method includes: creating a received codec list by receiving a transmit codec comprised in a call setting message from a transmission device and the number of transcodings of the transmit codec, which has been performed from a codec of an initial transmission device; creating a codec Quality of Service (QoS) list containing total codecs of the multi-network and quality information of each of the total codecs; creating a transcodec list containing internally providable transcodecs and quality information of the transcodecs based on the codec QoS list; and creating an updated codec list by adding codecs of the transcodec list matching codecs of the received codec list to the received codec list and adjusting codec priority according to the number of transcodings.

Abstract: Provided are a method for controlling errors of an Internet fax data according to the statue of a network by using a receiver report (RR) message in a real-time transport control protocol (RTCP) and a gateway to which the method is applied. Therefore, transmission errors are reduced and a transmission speed of a fax data is improved in transmitting a fax data over the Internet. The provided method includes receiving a T.38 fax data for analyzing a predetermined QoS motoring data of the T.38 fax data and generating status information, transmitting the status information to a gateway which has transmitted the T.38 fax data, receiving the status information for analyzing a packet loss of the transmitted T.38 fax data based on the status information, and increasing or decreasing a secondary message sequence length based on an analysis result. The provided method can control errors of a T.38 packet in real time, according to the status of a network, in transmitting a T.38 fax data over the Internet.

Abstract: An apparatus and method of variable bandwidth multi-codec quality of service (QoS) control are provided. The apparatus for controlling the QoS of a variable bandwidth multi-codec includes: a network state detection unit detecting a network state including at least one of a packet loss ratio, a packet loss interval, and a packet delay time based on an RTP packet transmitted to and received from a destination for which a call connection is established; and a codec control unit updating a transmission rate by comparing the detected resultant value with an already set reference value and increasing or decreasing the transmission rate, and controlling the variable bandwidth multi-codec to code data with the updated transmission rate. According to the apparatus and method, data can be coded with a codec transmission rate suitable for a network state identified during a voice call after the call is set up.

Abstract: Provided is a real-time multimedia transcoding apparatus and method using personal characteristic information. The apparatus provides a real-time multimedia transcoding apparatus using personal characteristic information for providing a fresh communication service by transforming a media type and/or a media codec by reflecting personal characteristic information such as gender and emotional condition between terminals calling through different media types and media codecs in a real-time multimedia service. The apparatus includes a receiving block for receiving a media stream; a characteristic extracting block for extracting user characteristics from the received media stream; a transforming block for transcoding the received media stream; and a transmitting block for transmitting the transcoded media stream.

Abstract: Provided is a method for a network adaptive error control for selecting an appropriate error control method according to the statue of a network, in transmitting a fax data over the Internet by using a T.38 protocol. The provided method includes receiving a T.38 fax data to recognize errors, transmitting a predetermined statistical information on the T.38 fax data to the media gateway controllers, selecting an error control method by determining the status of a network over which the T.38 fax data is transmitted, based on the statistical information, transmitting the error control method to the gateway that transmits the T.38 fax data, and renewing an existing error control method by receiving the error control method and transmitting the T.38 fax data according to the renewed error control method. According to the provided method, an appropriate error control method can be used according to the status of a network in real time, in transmitting a fax data over the Internet.

Abstract: The present invention relates to a method of controlling common call connection and a media gateway for executing the method, which are capable of performing call connection control without a change in a control procedure under different protocols and the interworking of the different protocols. In the method of the present invention, each of a plurality of termination points connected by a call in the media gateway, each of a plurality of multimedia services transmitted and received between the terminations through connection setup of the call and each of a plurality of physical resources per multimedia service in the multimedia are defined as a termination, a stream and a channel, respectively, a call processing request based on one of various media gateway control protocols is mapped into a model defined as described above, and resource allocation, connection setup or release with respect to a channel belonging to a call and a termination are requested according to the type of the call processing request.

Abstract: The present invention manages media gateway control (megaco) protocols according to changes of lower layer network protocol by implementing the megaco package in the network adaptor. A method for managing the megaco protocols by using a network adaptor includes steps of: a) requesting an installation of a megaco protocol package to a network adaptor; b) determining whether the megaco protocol exists in a network protocol table; c) adding a new protocol in the network protocol table; d) searching a specific megaco protocol package in the megaco protocol package list by using the specific package ID and connecting the specific megaco protocol package; and e) installing the megaco protocol packages and the specific megaco protocols, and managing the megaco protocols.

Abstract: Disclosed is a system and method for expandibly operating protocol PDU (Protocol Data Unit) encoding/decoding blocks communicating with a protocol executing block in the same protocol. With at least two types of protocol PDU encoding/decoding blocks for data communication in the same protocol, the protocol executing block does not implement the execution of protocol PDUs independently according to the respective encoding/decoding methods, but converts the information of the protocol PDU encoding/decoding block into that of the protocol executing block using a protocol PDU common data structure disposed between the protocol PDU encoding/decoding blocks and the protocol executing block.