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公开(公告)号：KR101521803B1
公开(公告)日：2015-05-21
申请号：KR1020130105325
申请日：2013-09-03
Applicant: 한국전자통신연구원
CPC classification number: G06F21/577 , G06F2221/034 , H04L63/00 , H04W4/00
Abstract: 본발명은모바일애플리케이션의보안성검증을위한이벤트발현장치및 그방법에관한것으로, 테스터대상애플리케이션으로부터추출되는애플리케이션정보를토대로상기테스터대상애플리케이션을테스트하는테스터애플리케이션을제작하는테스터애플리케이션제작부; 상기추출된애플리케이션정보에포함된이벤트를발현시켜상기테스트대상애플리케이션을실행시키고, 상기테스트대상애플리케이션이실행될때 스마트기기의화면에출력되는사용자뷰 객체를추출하는테스터애플리케이션실행부; 및상기추출된사용자뷰 객체를토대로터치이벤트를생성하여화면전환을수행하는테스터애플리케이션데몬실행부;를포함하는것을특징으로한다.
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公开(公告)号：KR100576721B1
公开(公告)日：2006-05-03
申请号：KR1020030096900
申请日：2003-12-24
Applicant: 한국전자통신연구원
IPC: H04L29/06
Abstract: 제로카피(zero-copy) 전송 기능을 구비한 네트워크 카드와 서버 및 그 전송 방법이 개시된다.
본 발명에 따른 제로 카피(zero-copy) 전송 기능을 지원하는 네트워크 카드는, 네트워크로 전송될 데이터를 디스크로부터 읽어 들이는 디스크 컨트롤러; 상기 디스크 컨트롤러가 읽어 들인 상기 데이터를 일시 저장하는 PCI 메모리; 상기 PCI 메모리를 제어하는 PCI 메모리 컨트롤러; 및 상기 PCI 메모리로부터 상기 데이터를 읽어서 네트워크로 전송하는 네트워크 컨트롤러를 포함하며, 상기 네트워크 컨트롤러는, 중간의 메모리 복사과정이 없이 디스크로부터 데이터를 읽어 상기 PCI 메모리를 통해 네트워크에 전송하는 제로 카피(zero-copy) 전송 기능을 지원하는 것을 특징으로 한다.
이에 따라, 로컬 메모리 대역폭 및 로컬 PCI버스 대역폭의 사용이 최소화되고 메모리간 복사가 일어나지 않기 때문에 CPU의 개입을 최소화함으로써 로컬 CPU의 부하를 경감시킬 수 있다.
TCP/IP 스택, zero-copy, PCI 메모리, TOE(TCP/IP Offload Engine), BSD 소켓 API, Linux-
公开(公告)号：KR100466588B1
公开(公告)日：2005-01-24
申请号：KR1020010082918
申请日：2001-12-21
Applicant: 한국전자통신연구원
IPC: H04N21/439 , H04N19/103
Abstract: PURPOSE: A decoding apparatus by detecting a digital audio encoding type and a method therefor are provided to decode audio streams regardless of the audio encoding type, thereby reducing system load. CONSTITUTION: A memory unit(15) stores audio decoding programs according to audio encoding types. A demultiplexer(11) demultiplexes a received transport stream for dividing the transport stream into video, audio, and additional information streams. An audio encoding type detector(13) analyzes program specific information based on the additional stream transmitted from the demultiplexer for detecting an encoding type of the audio stream. An audio decoding unit(14) extracts the corresponding audio decoding program from the memory unit according to the audio encoding type information for decoding the audio stream based on the audio decoding program. A video decoding unit(12) decodes the video stream through the MPEG(Moving Picture Expert Group) method.
Abstract translation: 目的：提供一种通过检测数字音频编码类型的解码设备及其方法来解码音频流，而不管音频编码类型如何，从而减少系统负载。 组成：存储单元（15）根据音频编码类型存储音频解码程序。 解复用器（11）解复用接收的传输流，以将传输流划分为视频，音频和附加信息流。 音频编码类型检测器（13）基于从解复用器发送的附加流来分析节目特定信息，以检测音频流的编码类型。 音频解码单元（14）根据音频解码程序根据用于解码音频流的音频编码类型信息从存储单元提取相应的音频解码程序。 视频解码单元（12）通过MPEG（运动图片专家组）方法解码视频流。
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公开(公告)号：KR1020040055894A
公开(公告)日：2004-06-30
申请号：KR1020020082341
申请日：2002-12-23
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: PURPOSE: A method for operating/managing a distributed/shared RAID(Redundant Array of Inexpensive Disks) system based on a SAN(Storage Area Network) is provided to reduce a load of a web server and a diagnosis/management program, and enhance the security reliability by managing/controlling a system through a server based on the web. CONSTITUTION: If a management object is downloaded by using the node information obtained through a heartbeat message, a current state of the server is judged(S402). If the current state of the server is in-service, a download process is terminated. In case that the download of the management object is needed, the state of the server is changed to going-in-service, and the state of all nodes of the in-service is changed to a standby state by broadcasting a standby message to all servers and controllers(S406). Thus, the discordance during the download of the management object is removed by making the standby nodes process only a restricted message.
Abstract translation: 目的：提供一种操作/管理基于SAN（存储区域网络）的分布式/共享RAID（廉价磁盘冗余阵列）系统的方法，以减少Web服务器和诊断/管理程序的负载，并增强 通过基于网络的服务器管理/控制系统来实现安全可靠性。 构成：如果通过使用通过心跳消息获得的节点信息来下载管理对象，则判断服务器的当前状态（S402）。 如果服务器的当前状态处于使用状态，则终止下载过程。 在需要管理对象的下载的情况下，将服务器的状态改变为正在运行状态，并且通过向全部广播备用消息将在役中的所有节点的状态改变为待机状态 服务器和控制器（S406）。 因此，通过使备用节点仅处理受限消息来删除管理对象下载期间的不一致。
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公开(公告)号：KR100406253B1
公开(公告)日：2003-11-14
申请号：KR1020010084447
申请日：2001-12-24
Applicant: 한국전자통신연구원
IPC: H04N21/431 , H04N21/434
Abstract: PURPOSE: A system and method for automatically converting digital broadcasting program guide information are provided to automatically convert ATSC program guide information into digital video broadcasting program guide information. CONSTITUTION: A system for automatically converting digital broadcasting program guide information includes a packet receiver(120), a program guide information extractor(130), a system and information program table generator(140). The packet receiver receives a program and system Internet transmission stream packet from ATSC broadcasting stream. The program guide information extractor constructs table data using the PSIP transmission stream packet to extract ATSC program guide information. The system and information program table generator generates DVB program guide information tables with respect to channels using the extracted program guide information.
Abstract translation: 目的：提供一种用于自动转换数字广播节目指南信息的系统和方法，以将ATSC节目指南信息自动转换为数字视频广播节目指南信息。 用于自动转换数字广播节目指南信息的系统包括分组接收器（120），节目指南信息提取器（130），系统和信息节目表发生器（140）。 分组接收器从ATSC广播流接收节目和系统互联网传输流分组。 节目指南信息提取器使用PSIP传输流数据包构造表数据以提取ATSC节目指南信息。 系统和信息节目表产生器使用提取的节目指南信息产生关于频道的DVB节目指南信息表。
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Patent Agency Ranking
公开(公告)号：KR1020030055414A
公开(公告)日：2003-07-04
申请号：KR1020010084934
申请日：2001-12-26
Applicant: 한국전자통신연구원
IPC: H04N7/01
CPC classification number: H04N21/2343 , H04N21/23608
Abstract: PURPOSE: A system for converting digital broadcasting program and system information is provided to convert program and system information loaded in a transport stream packet into a desired digital broadcasting system standard information in real time. CONSTITUTION: A system for converting digital broadcasting program and system information includes a transport stream demultiplexer(420), a user interface(430), a program and system information generator(450), and an output unit(460). The transport stream demultiplexer receives a digital broadcasting transport stream and divide the transport stream into a contents-stream packet and a program and system information packet. The user interface allows an operator to input data required for generating program and system information. The program and system information generator generates program and system information of a desired digital broadcasting standard using the data received from the multiplexer and the user interface. The output unit outputs the program and system information.
Abstract translation: 目的：提供一种用于转换数字广播节目和系统信息的系统，用于将加载在传输流分组中的节目和系统信息实时转换成所需的数字广播系统标准信息。 构成：用于转换数字广播节目和系统信息的系统包括传输流解复用器（420），用户接口（430），节目和系统信息发生器（450）以及输出单元（460）。 传输流解复用器接收数字广播传输流，并将传输流划分为内容流分组以及程序和系统信息分组。 用户界面允许操作员输入生成程序和系统信息所需的数据。 程序和系统信息发生器使用从多路复用器和用户接口接收的数据产生期望的数字广播标准的程序和系统信息。 输出单元输出程序和系统信息。
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7.发明公开
公开(公告)号：KR1020020097389A
公开(公告)日：2002-12-31
申请号：KR1020010035177
申请日：2001-06-20
Applicant: 한국전자통신연구원
IPC: H04N21/2362 , H04N1/41
CPC classification number: H04N21/235 , H04N1/411 , H04N21/2362
Abstract: PURPOSE: A method for generating an encoding table for Korean character compression encoding and a method for Korean character compression encoding by using the same are provided to transmit a lot of Korean character data generated in case of data broadcasting by using a digital TV after compressing the Korean character data. CONSTITUTION: A method for generating an encoding table for Korean character compression encoding includes the steps of extracting samples of Korean character data being used for broadcasting(11), obtaining the generation probability of each symbol in the extracted Korean character data samples(12), generating an encoding table by executing Huffman encoding after confirming whether the generation probability of each symbol is more than a predetermined value(13-14), and constructing a compression encoding table related to all symbols having the generation probability over the regular value(15-16).
Abstract translation: 目的：提供一种用于生成用于韩文字符压缩编码的编码表的方法和使用该方法的韩文字符压缩编码方法，用于在压缩数字电视之后通过使用数字电视发送数据广播时产生的大量韩文字符数据 韩文字符数据。 构成：用于生成韩文字符压缩编码的编码表的方法，包括以下步骤：提取用于广播的韩文字符数据的样本（11），获取所提取的韩文字符数据样本（12）中的每个符号的生成概率， 在确认每个符号的生成概率是否大于预定值（13-14）之后，通过执行霍夫曼编码来生成编码表，并且构造与具有超过常规值的生成概率的所有符号相关的压缩编码表（15- 16）。
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公开(公告)号：KR1020020074817A
公开(公告)日：2002-10-04
申请号：KR1020010014852
申请日：2001-03-22
Applicant: 한국전자통신연구원
IPC: H04N21/242 , H04N7/24
CPC classification number: H04N21/242 , H04N21/236
Abstract: PURPOSE: A PCR(Program Clock Reference) jitter removing method and a device thereof are provided to correct a PCR delay value of a TS stream generated in the procedure of multiplexing by adding a time stamp per input packet of respective packets, thereby removing the PCR jitter. CONSTITUTION: A PCR jitter removing device includes a packet expanding unit(12) for recording a packet input time with respect to a multiplexer in the packet, extending the packet, and outputting the extension packet to a multiplexer buffer, and a PCR corrector for obtaining a buffer delay time via an entire delay time of an initial extension packet when calculating the entire delay time in the packet multiplexer by extracting the packet input time from the extension packet output via the multiplexer buffer, and compensating the multiplexing delay of the PCR packet by using the entire delay time of the PCR packet and the buffer delay time by extracting the PCR packet in the extension packet. The packet extension unit includes FIFO(41) storing the input packet, a clock generator(60) for generating system time clocks, STC counter(42) for counting the system time clocks and providing the system time clock to a PCR corrector, and a packet extension element(43) for outputting the extension packet by receiving the packet from the FIFO and a system time clock counting value from the STC counter and adding the input time to the packet.
Abstract translation: 目的：提供PCR（程序时钟参考）抖动消除方法及其装置，以通过对每个分组的每个输入分组添加时间戳来校正在多路复用过程中产生的TS流的PCR延迟值，从而去除PCR 抖动。 一种PCR抖动消除装置，包括：分组扩展单元，用于记录分组中的多路复用器的分组输入时间，扩展分组，并将扩展分组输出到多路复用器缓冲器;以及PCR校正器，用于获得 通过从经由多路复用器缓冲器输出的扩展分组提取分组输入时间来计算分组多路复用器中的整个延迟时间，通过初始扩展分组的整个延迟时间的缓冲器延迟时间，并且通过 通过提取扩展分组中的PCR分组，使用PCR分组的整个延迟时间和缓冲器延迟时间。 分组扩展单元包括存储输入分组的FIFO（41），用于产生系统时钟的时钟发生器（60），用于对系统时钟进行计数并向PCR校正器提供系统时钟的STC计数器（42） 分组扩展元件（43），用于通过从FIFO接收分组来输出分组分组，并且从STC计数器输出系统时间时钟计数值，并将输入时间添加到分组。
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公开(公告)号：KR100473116B1
公开(公告)日：2005-03-10
申请号：KR1020020042931
申请日：2002-07-22
Applicant: 한국전자통신연구원
IPC: H04N21/4402
CPC classification number: H04N21/2335 , H04N21/23406 , H04N21/2355 , H04N21/23608 , H04N21/8126
Abstract: 본 발명은 컨텐츠 변환 장치 및 그 방법에 관한 것이다.
본 발명은 외부로부터 입력되는 컨텐츠인 제1 방송 규격의 방송 스트림을 역다중화하여 오디오 스트림, 비디오 스트림, 및 데이터 스트림으로 분리하는 역다중화부; 상기 오디오 스트림의 부호화 포맷을 방송하고자 하는 제2 방송 규격에 따른 부호화 포맷으로 변환시키고, 상기 데이터 스트림의 방송 서비스 포맷을 제2 방송 규격에 따른 서비스 포맷으로 변환시키는 변환부; 제2 방송 규격에 따른 프로토콜 스트림을 제공하는 프로토콜 서버; 및 상기 변환된 오디오 스트림 및 데이터 스트림 그리고 비디오 스트림과 상기 프로토콜 서버로부터 제공되는 프로토콜 스트림을 다중화하여 하나의 전송 스트림을 생성하는 다중화부를 포함한다.
이러한 본 발명에 따르면, 다른 규격의 컨텐츠를 복호화하지 않고 방송하고자 하는 규격으로 변환시켜 사용함으로써, 방송 품질을 저하시키지 않고 서로 다른 규격을 사용하는 방송 시스템간에 컨텐츠를 공유할 수 있다.-
公开(公告)号：KR100448220B1
公开(公告)日：2004-09-10
申请号：KR1020020060991
申请日：2002-10-07
Applicant: 한국전자통신연구원
IPC: H04N7/12
CPC classification number: H04N21/23611 , H04N21/23608 , H04N21/23614 , H04N21/4348
Abstract: A null packet insertion apparatus including a null packet remover for removing an irregularly inserted null packet from an externally received video/audio transport stream; a null packet bit rate calculator for calculating a bit rate of the removed null packet; a GUI for determining the transmission period of a periodic null packet to be newly inserted, based on the calculated bit rate, by an external user; a periodic null packet generator; a multiplexer for regularly inserting the periodic null packet preferentially and inserting the video/audio transport stream with the irregular null packet removed, and performing multiplexing; a non-periodic null packet generator; and a PCR corrector.
Abstract translation: 一种空分组插入装置，包括：空分组去除器，用于从外部接收的视频/音频传送流中去除不规则插入的空分组; 空分组比特率计算器，用于计算去除的空分组的比特率; GUI，用于由外部用户基于所计算的比特率来确定要新插入的周期性空分组的传输周期; 一个周期性的空包生成器; 多路复用器，用于优先有规律地插入周期性空分组，并插入移除了不规则空分组的视频/音频传输流，并执行多路复用; 非周期性空分组发生器; 和一个PCR校正器。
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