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公开(公告)号：KR100748554B1
公开(公告)日：2007-08-10
申请号：KR1020050068033
申请日：2005-07-26
Applicant: 삼성전자주식회사
Inventor： 김학수
CPC classification number: G06F11/1443 , G06F1/266 , G06F11/1441
Abstract: 본 발명은 USB(Universal Serial Bus) 시스템에 관한 것이다. 본 발명에 따른 USB 시스템은 호스트와 USB 케이블을 통해 호스트와 연결된 적어도 하나 이상의 디바이스를 포함하며, 호스트와 디바이스 간의 통신이 데드락 상태에 빠지게 되면, 호스트는 디바이스로의 전원공급을 차단하고, 초기화 과정을 거친 후, 디바이스로의 전원공급을 재개함으로써, 호스트와 디바이스 간의 통신이 데드락 상태로부터 자동적으로 빠져나오도록 한다.
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公开(公告)号：KR1020070013605A
公开(公告)日：2007-01-31
申请号：KR1020050068033
申请日：2005-07-26
Applicant: 삼성전자주식회사
Inventor： 김학수
CPC classification number: G06F11/1443 , G06F1/266 , G06F11/1441
Abstract: A USB(Universal Serial Bus) host, a USB system, and a driving method thereof are provided to automatically get out from a deadlock state without removing and reconnecting a USB cable when USB data communication is got into a deadlock state. A device(200) is connected to the host(100) through the USB cable(300). If the deadlock state is generated, the host cuts off power supplied to the device through a power line and supplies again the power to the device after an initialization process. The host includes the first switch for controlling power supply for the device by connecting to the power line. The device is equipped with a pull-up resistor connected to a data line of the USB and the pull-up resistor is connected to the second switch. The second switch cuts off the connection between the pull-up resistor and the data line if the power supply through the power line is cut off, and makes the connection between the pull-up resistor and the data line if the power supply is restarted.
Abstract translation: 提供USB（通用串行总线）主机，USB系统及其驱动方法，以在USB数据通信进入死锁状态时自动脱离死锁状态而不移除和重新连接USB电缆。 设备（200）通过USB电缆（300）连接到主机（100）。 如果产生死锁状态，则主机通过电源线切断提供给设备的电源，并在初始化过程之后再次向设备供电。 主机包括通过连接到电源线来控制设备的电源的第一开关。 该器件配有连接到USB数据线的上拉电阻，并且上拉电阻连接到第二开关。 如果通过电源线的电源被切断，第二个开关切断上拉电阻和数据线之间的连接，如果电源重新启动，则上拉电阻和数据线之间的连接。
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63.发明公开
公开(公告)号：KR1020030094479A
公开(公告)日：2003-12-12
申请号：KR1020020031411
申请日：2002-06-04
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: H04W84/20
CPC classification number: H04W84/20 , H04W4/06 , H04W28/04 , H04W72/005
Abstract: PURPOSE: A method for transmitting broadcast packets in the piconet of a Bluetooth system and determining the transmission frequency of broadcast packets is provided to flexibly adjust the transmission frequency in broadcast packet communication according to channel states in order to prevent a waste of channels due to unnecessary retransmission in the case of a good channel state. CONSTITUTION: A Bluetooth system receives a data packet from a host(310) and determines whether the received data packet is a broadcast packet(320). In case that the received data packet is not a broadcast packet, the Bluetooth system repeatedly transmits the data packet until a master receives an ACK(ACKnowledgement) signal from each slave(331). Then the Bluetooth system stores the number of data packets transmitted to each slave in the master(332). However, if the received data packet is a broadcast packet, the Bluetooth system compares the number of data packets repeatedly transmitted for each channel, obtains the maximum value through the comparison, and determines the obtained value as the frequency of transmission(341). Then the Bluetooth system repeatedly transmits broadcast packets as much as the determined transmission frequency(342).
Abstract translation: 目的：提供一种在蓝牙系统的微微网中发送广播数据包并确定广播数据包的传输频率的方法，以便根据信道状态灵活地调整广播数据包通信中的传输频率，以防止由于不必要的信道浪费 在通道状态良好的情况下进行重发。 构成：蓝牙系统从主机（310）接收数据分组，并确定接收的数据分组是否是广播分组（320）。 在接收到的数据分组不是广播分组的情况下，蓝牙系统重复发送数据分组，直到主机从每个从机（331）接收到ACK（确认）信号为止。 然后蓝牙系统存储发送到主机中的每个从机的数据分组的数量（332）。 然而，如果接收到的数据分组是广播分组，则蓝牙系统比较每个信道重复发送的数据分组的数量，通过比较获得最大值，并将所获得的值确定为传输频率（341）。 然后，蓝牙系统重复地发送广播分组多达所确定的传输频率（342）。
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公开(公告)号：KR1020020062409A
公开(公告)日：2002-07-26
申请号：KR1020010003387
申请日：2001-01-20
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: H04B1/54
CPC classification number: H04B1/04 , H03F1/56 , H03F3/72 , H04B1/0458 , H04B1/406
Abstract: PURPOSE: A circuit for efficiently improving a power amplifier in a dual mode portable wireless terminal is provided to decrease a consumption power of the terminal by satisfying characteristics of CDMA(Code Division Multiple Access) and AMPS(Advanced Mobile Phone Service) modes in dual mode using only one power amplifier and optimizing efficiency. CONSTITUTION: A CDMA matching unit(20) connects to an output terminal of a power amplifier(10) and performs a matching when being operated as a CDMA mode. An AMPS matching unit(30) connects to an output terminal of a power amplifier(10) and performs a matching when being operated as an AMPS mode. A switch(40) connects to one between the CDMA matching unit(20) and the AMPS matching unit(30) on the basis of a signal provided according to the selection of one between the CDMA and AMPS modes.
Abstract translation: 目的：提供一种双模便携式无线终端中功率放大器有效改善的电路，通过满足双模式CDMA（码分多址）和AMPS（高级移动电话业务）模式的特点，降低终端消耗功率 仅使用一个功率放大器并优化效率。 构成：CDMA匹配单元（20）连接到功率放大器（10）的输出端子，并且当作为CDMA模式工作时执行匹配。 AMPS匹配单元（30）连接到功率放大器（10）的输出端子，并且当作为AMPS模式被操作时执行匹配。 基于根据CDMA和AMPS模式之间的选择提供的信号，开关（40）连接到CDMA匹配单元（20）和AMPS匹配单元（30）之间。
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公开(公告)号：KR100267363B1
公开(公告)日：2000-10-16
申请号：KR1019940000023
申请日：1994-01-03
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: G06T1/00
Abstract: PURPOSE: A method for classifying a document area is provided to classify a document area by extracting each characteristic of scanned image data. CONSTITUTION: Scanned image data stored in a memory portion are blocked through a CRLA(Constrained Run Length Algorithm)(21). A coordinate value of a document area is set up after the blocking process is performed(22). A height of divided area, the number of black pixel by unit area within the divided original image, and a mean length of horizontal black pixels within the divided original image are extracted after the coordinate value for the document area is set up(23). A document area is classified by using learning vector quantization(24).
Abstract translation: 目的：提供一种分类文档区域的方法，通过提取扫描图像数据的每个特征来对文档区域进行分类。 构成：通过CRLA（约束运行长度算法）（21）阻止存储在存储器部分中的扫描图像数据。 在执行阻塞处理之后建立文档区域的坐标值（22）。 （23），分割原始图像的高度，分割原始图像中的黑色像素单位面积的数量和分割原始图像内的水平黑色像素的平均长度被提取。 通过使用学习向量量化（24）对文档区域进行分类。
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Patent Agency Ranking
公开(公告)号：KR100195007B1
公开(公告)日：1999-06-15
申请号：KR1019950023090
申请日：1995-07-29
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: H04N7/15
Abstract: [청구범위에 기재된 발명이 속한 기술분야]
화상회의시스템의 비디오엔코더에 관한 것이다.
[발명이 해결하려고 하는 기술적 과제]
비디오엔코더의 비정상 상태를 정확히 판별하여 자동으로 복구 가능하게 하는 장치 및 그 방법을 제공함에 있다.
[발명의 해결방법의 요지]
화상처리시스템의 비디오엔코더 비정상 상태 판별 및 자동복구장치에 있어서, 영상신호의 송신을 위한 부호화 및 표시를 위한 부복호화부와, 송신할 데이터를 상기 부복호화부로부터 전달받아 일시적으로 저장하는 제1데이터를 상기 부복호화부로부터 전달받아 일시적으로 저장하는 제1메모리와, 표시할 영상데이터를 상기 부복호화부로 전달하는 제2메모리와, 상기 제1메모리에서 제공되는 영상데이터 혹은 상기 제2메모리로 전달할 영상데이터에 대한 오차정정부호화를 실시하는 오차정정부호화부와, 상기 제1메모리 혹은 상기 제2메모리를 읽어 각각에 대한 이전 및 현재상태를 비교하여 이전 및 현재상태가 동일하면 상기 부복호화부가 비정상 상태인 것으로 판단하여 상기 부복화부를 재기동시키는 제어부로 구성됨을 특징으로 한다.
[발명의 중요한 용도]
화상회의시스템의 비디오엔코더에서 발생하는 비정상 상태를 판별하여 자동으로 복구하게 하는 데에 이용한다.-
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公开(公告)号：KR1019960012544B1
公开(公告)日：1996-09-20
申请号：KR1019930010948
申请日：1993-06-16
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: H04N1/32
Abstract: The method is designed to process a picture by converting ODA(Open Document Architecture) format of the picture into ODIF(Open Document Interchange Format) datastream. The device comprises: a central processor (10); a memory section (20); an operation panel section(30); a scanner (40); a communication controller (50); an ISDN interface section (60); and an auxiliary decoder (70). The method includes steps of scanning the material, outputting the scanned data, and performing picture zone configuration in text or image area by the central processor.
Abstract translation: 该方法旨在通过将图像的ODA（开放文档架构）格式转换为ODIF（开放文档交换格式）数据流来处理图片。 该装置包括：中央处理器（10）; 存储部分（20）; 操作面板部（30）; 扫描器（40）; 通信控制器（50）; ISDN接口部分（60）; 和辅助解码器（70）。 该方法包括扫描材料，输出扫描数据，以及通过中央处理器在文本或图像区域中执行图像区域配置的步骤。
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公开(公告)号：KR1019930002199B1
公开(公告)日：1993-03-27
申请号：KR1019900016336
申请日：1990-10-15
Applicant: 삼성전자주식회사
Inventor： 김학수
IPC: H04N1/32
Abstract: A melody producing circuit uses a fax modem for producing the various melody in a facsimile coupled with a multifunctional telephone, and eliminates a melody IC. The method to produce the melody comprises the steps of: detecting the reservation key input; searching the tone data in a memory; reading the tone data and setting the tone data to the fax modem; transmitting the tone data through the telephone line; detecting the end of the tone transmission; and cutting off the tone transmission by turning-off the RTS bit of the fax modem.
Abstract translation: 旋律产生电路使用传真调制解调器来生产与多功能电话耦合的传真机中的各种旋律，并且消除旋律IC。 产生旋律的方法包括以下步骤：检测预约键输入; 在存储器中搜索音调数据; 读取音调数据并将音调数据设置到传真调制解调器; 通过电话线传输音调数据; 检测音调传输的结束; 并通过关闭传真调制解调器的RTS位来切断音调传输。
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