Abstract: A parallel acquisition system configured using a reference matched filter, thereby obtaining a superior acquisition performance and a high throughput as compared to conventional serial acquisition systems and conventional parallel acquisition systems including no reference matched filter. The parallel acquisition system includes a reference matched filter connected in parallel to a plurality of detection matched filters connected together in parallel. The reference matched filter serves to estimate a dispersion of interference components of reception signals respectively input at the detection matched filters. The parallel acquisition system can be applied to the receiver of a spread spectrum system for a packet radio data communication in a multiple access environment.

Abstract: Methods for performing origination and termination processes to control reserved semi-permanent virtual path connections in an asynchronous transfer mode virtual path switching system. A service can flexibly be provided based on semi-permanent virtual path connection information for a desired time in response to a reserved semi-permanent virtual path registration command received through an operator interface during the operation of the system. Also, the reserved semi-permanent virtual path connections can be controlled up to 256 per subscriber link of 155 Mbps class. A subscriber service using time is designated and resources in a network are occupied only for the designated time. Therefore, a plurality of subscribers are set at different service time zones in such a manner that the network resources can be utilized at the maximum at each service time zone.

Abstract: An identification scheme, a digital signature scheme giving message recovery, and a digital signature scheme with appendix are disclosed. In processing and transmitting information, a transmitting counterpart of a transmission message is confirmed. The unauthorized modification of the message is confirmed and transmitting behavior is detected, thereby providing the reliable information service.

Abstract: A moving picture expert group 2(MPEG-2) encoder pre-processor for processing split picture video of standard definition (SDTV) and high definition television (HDTV). The MPEG-2 encoder pre-processor includes signal separation and synchronizing signal detector, multiplexor, and video processor. The pre-processor is capable of processing both of SDTV video and HDTV split picture video by performing the processes such as 4:2:2/4:2:0 conversion, pre-processing adaptive filtering and scene change detection, so as to simplify the compression of the video from the input video signals. Accordingly, there is no need to develop pre-processors for SDTV and HDTV, individually.

Abstract: An improved video window control apparatus and a method thereof which are capable of generating a plurality of video windows on a television or a computer monitor, controlling the size and position thereof, and providing a video window overlap function and a picture-in-picture function.

Abstract: A dielectric resonator includes a dielectric block having an open surface at one of the surfaces thereof, the remaining surfaces being plated with a conductor. The dielectric block has an inner conductor hole formed at a surface of the dielectric block opposite to the open surface, the inner conductor hole extending a predetermined depth toward the open surface such that it does not perforate through the open surface. An electrode pattern is formed on the open surface such that it faces an end surface of the inner conductor hole, the electrode pattern being adapted to provide an input/output capacitor. The dielectric block has a coupling window formed on a predetermined portion of one of the surfaces of the dielectric block, except for the open surface and the surface formed with the inner conductor hole, at a position adjacent to one of the open surface and the surface formed with the inner conductor hole.

Abstract: A method for automatically verifying the accuracy of an electronic map by an algorism which is adapted to verify irregular unit objects on the electronic map, thereby reducing the verification time and costs while obtaining improved verification accuracy. The method includes the steps of calculating a desired number of unit straight lines to be included in a broken line, overlapping an image, which is indicative of raster data transformed from vector data obtained based on original raster data of an original map, with an image indicative of the original raster data, thereby calculating the number of overlapping unit straight lines, and verifying the accuracy of the electronic map, based on the calculated results along with desired limitations associated with those results.

Abstract: A dematrixing processor for an MPEG-2 multichannel audio decoder, which is capable of performing a decoding matrix process with respect to five compositely decoded signals to restore them to their original status. To this end, the dematrixing processor comprises an arithmetic/control logic unit for performing a dematrixing operation with respect to the five compositely decoded signals to restore them to their original status, and an IIR filter for low pass filtering an output signal from the arithmetic/control logic unit and providing the low pass filtered result to the arithmetic/control logic unit.

Abstract: A method for controlling the data bit rate of a differential pulse code modulation/discrete cosine transform (DPCM/DCT) video encoder, which is adapted to achieve a bit rate control in accordance with a video signal band compression scheme using a differential pulse code modulation (DPCM) and a discrete cosine transform (DCT), thereby obtaining a supreme picture quality while preventing a buffer overflow or underflow phenomenon from occurring in the encoder. The method includes the steps of determining an initial bit allocation amount for every group of pictures (GOP) of an input video, allocating bits for every picture of each GOP, allocating bits for every macroblock of each picture, determining a quantizer step parameter based on the bit allocation amount, and determining a quantizer step size proportional to the determined quantizer step parameter.

Abstract: A method for providing automatic telephone response services by using an intelligent peripheral system (IP) is disclosed. Particularly the invention provides to an apparatus and a method for providing automatic telephone response services by using an IP, in which, when the called subscriber is absent or when the line is busy, the caller records a vocal message in the IP by using the IP instead of a recording device so as for the called subscriber to be able to receive the message later, and therefore, general telephone subscribers having no automatically responding telephone can receive the recorded vocal message through the IP when the called subscriber is absent or the line is busy.

Abstract: A phase locked loop for synchronizing decoding clocks with encoding clocks in a Moving Picture Experts Group (MPEG) system. The phase-locked loop circuit includes a voltage controlled oscillator for converting a decoding clock into an encoding clock, a register unit for storing multiplexing program clock reference signals, each input with a desired number of bits, a counter being initialized by a first program clock reference signal output from the register unit, thereby generating a local program clock reference signal, and a phase error control unit for combinationally operating the program clock reference signal stored in the register unit and the local program clock reference signal, thereby generating a phase error signal for controlling the voltage controlled oscillator.

Abstract: A method for directly performing a data analysis, a logical design and a physical design processes on an EDIF file and an initial data, without utilizing Troll relational Database system, to create an optimized schema, a meta data and a processor load (PLD) without any overlapped process. First, the EDIF file and the initial data file are received and an initial system environment is set for creating the meta data and the processor load data. Further, a DBMS.sub.-- MODE.sp file and a DBMS.sub.-- REL.sp file are created such that the database mode specification file represent a recorded definition of a SET mode defined in all the EDIF files, and such that the database relation specification file represent a recorded definition of the relation in all the EDIF files which are being converted into Chill Syntax Structure. Various meta data corresponding to each processor are created based on the catalogue of transaction files.

Abstract: An identification scheme which allows a prover to identify his own identity to a verifier more certainly and prevents already used authentication information from being re-used, a key exchange which uses a common secret key between two users in order not to allow an unauthorized to find it out, a digital signature scheme giving message recovery and digital signature scheme with appendix for producing a digital signature of a message recovery type or appendix type according to the size of a message to be signed, a multi-digital signature scheme for allowing multiple signers to generate digital signatures with respect to the same message and producing them in a message recovery type or appendix type according to the length of the message to be signed, and a blind digital signature scheme for producing a digital signature when a message to be signed should not be opened to the public as well as the signer and therefore a signer does not know the contents thereof.

Abstract: A block-matching motion estimation apparatus in the form of linear systolic array architecture.

Abstract: An improved rare probability connection call registration method which utilizes automatic congestion level (ACL) information within a release message for an asynchronous transfer mode (ATM) switching system. The method includes the steps of setting a predetermined threshold value, receiving a call releasing message, checking automatic congestion level (ACL) information in the call release message, and determining whether an ACL information is set. When the ACL information is not set continuous checks are made, and the method continues by increasing the count value when the ACL information is set, and it is determined whether the value of the ACL counter is greater than a predetermined threshold value.

Abstract: The present invention relates to a latch structure for effectively controlling the users' simultaneous accesses to a critical section in a system supporting a multi-user environment and a method for managing the same. The latch is a data structure, having a mutual exclusion variable and a pointer to a request queue, used in providing a schedule for user requests. It is an object of the present invention to provide a latch structure and a method for managing the same which are simple and are capable of improving the concurrence of the users' accesses to a critical section through the implementation of a complete latch satisfying all of the conditions required by the critical section. The concurrence for the multi-user system and the performance of the entire system can be greatly improved.

Abstract: The present invention relates to a method of extracting a call set-up failure probability and a premature disconnect probability, which are factors for accessing the quality control of a data network. In accordance with the present invention the method comprises the steps of configuring a database for causes of premature disconnect and a configuration database which stores quality values which includes originating and destination numbers. Reading the corresponding billing record and verifying whether the record is normal, and if so, determining whether the origination/destination number of the billing record is the same as that stored in the configuration database. Updating a statistics database for each configuration database, each origination/destination call, each time and date when the numbers match, and then calculating the call set-up failure probability and premature disconnect probability for each configuration database, call and each time and date of the statistics database.

Abstract: An nB2P coding/decoding device having a line code function facilitating data transmission and data recovery in the transmission line or link, and a function of a channel code for detecting errors in the recovered data, is provided, including: an nB2P coding device for dividing n bit width parallel data into two data units each having a predetermined bit width, and serial-transmitting the resulting n+2 bit coded data to which two odd parity bits are added, with predetermined n+2 bit with block synchronization data which is orthogonal to the coded data; and an nB2P decoding device for detecting the block synchronization data from the serially transmitted data, converts serial data to parallel form of n+2 bits, checking for errors in the coded data using the odd parity, and removing the odd parity to decode them into the original n bit width parallel data.

Abstract: A dielectric microwave filter includes a dielectric body, a trinity of first, second and third resonant slots, a pair of cavities for transmitting input/output signals, a pair of slits, and a trinity of first, second and third resonant holes. Each of the resonant slots (and an associated resonant hole in some embodiments) functions as a resonator having a quarter wavelength. Each of the slits modulates a coupling of electromagnetic fields among the resonant slots (and resonant holes if present). All surfaces of the dielectric microwave filter are completely covered with an electrically conducting material, except for front and top surfaces of the dielectric body. Since the resonators having a quarter wavelength may have reduced surface dimensions, the filter may accommodate associated surface input/output coupling cavities and also be more easily manufactured in a miniaturized structure.

Abstract: A method of creating signal message common files for a mobile switching center which is capable of simplifying a process and effectively and directly creating a signal message common file is disclosed.