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    • 2. 发明授权
    • Information storage medium, and recording/reproducing method and apparatus
    • 信息存储介质,以及记录/再现方法和装置
    • US08850111B2
    • 2014-09-30
    • US12788499
    • 2010-05-27
    • Sung-hee HwangKyung-geun LeeIn-ho Hwang
    • Sung-hee HwangKyung-geun LeeIn-ho Hwang
    • G06F12/16G11B20/18
    • G11B20/1883G11B2020/1826G11B2220/20G11B2220/235G11B2220/2537
    • An information storage medium includes: a user data area for recording user data; a spare area including spare blocks each for replacing a defective block occurring in the user data area; and a defect management area in which information about the defective block occurring in the user data area is recorded, wherein the spare blocks of the spare area include usable spare blocks with replacement blocks existing in forward parts of the usable spare blocks in a usage order, and usable spare blocks without replacement blocks existing in forward parts of the usable spare blocks in the usage order, wherein a next available position pointer of the spare area is recorded in the defect management area, and the next available position pointer of the spare area indicates a first usable spare block from among the usable spare blocks without the replacement blocks existing in the forward parts of the usable spare blocks in the usage order.
    • 信息存储介质包括:用于记录用户数据的用户数据区; 备用区,包括备用块,用于替换在用户数据区中发生的缺陷块; 以及缺陷管理区域,其中记录了在用户数据区域中发生的关于缺陷块的信息,其中备用区域的备用块包括使用顺序中存在可用备用块的前向部分中的替换块的可用备用块, 以及可用的备用块,其中使用顺序中存在于可用备用块的前端部分中的替换块,其中备用区的下一个可用位置指针被记录在缺陷管理区中,并且备用区的下一个可用位置指针指示 可用备用块中的第一可用备用块,而不使用存在于可用备用块的前向部分中的替换块。
    • 6. 发明授权
    • Device for preventing eavesdropping through speaker
    • 用于防止通过扬声器窃听的设备
    • US07920822B2
    • 2011-04-05
    • US12056670
    • 2008-03-27
    • Kwang Uk ChuIn Ho HwangJong Kyu KimSang Woo ChoDae Heon Lee
    • Kwang Uk ChuIn Ho HwangJong Kyu KimSang Woo ChoDae Heon Lee
    • H04K3/00
    • H04K3/825H04K3/42H04K3/43H04K2203/12
    • Provided is a device for preventing eavesdropping through a speaker. More particularly, a device for preventing eavesdropping by transmitting a jamming signal through a speaker common signal line is provided, the device including: a jamming signal generator for generating a jamming signal comprising a noise signal; an amplifier for amplifying the jamming signal; and a transformer for receiving the amplified jamming signal from the amplifier and outputting the amplified jamming signal to a speaker common signal line. The device may transmit a jamming signal in an audible frequency band to the speaker common signal line, thereby rendering conversations unrecognizable to eavesdroppers when an electrical signal induced from a speaker is detected through the speaker common signal line.
    • 提供了用于防止通过扬声器窃听的设备。 更具体地,提供了一种通过将扬声器公共信号线发送干扰信号来防止窃听的装置,该装置包括:干扰信号发生器,用于产生包括噪声信号的干扰信号; 用于放大干扰信号的放大器; 以及用于从放大器接收放大的干扰信号并将放大的干扰信号输出到扬声器公共信号线的变压器。 设备可以将扬声器公共信号线中的可听频带中的干扰信号发送到扬声器公共信号线,从而当通过扬声器公共信号线检测到从扬声器感应到的电信号时,使得会话无法识别到窃听器。
    • 7. 发明申请
    • INFORMATION STORAGE MEDIUM, AND RECORDING/REPRODUCING METHOD AND APPARATUS
    • 信息存储介质和记录/再现方法和装置
    • US20100306487A1
    • 2010-12-02
    • US12788499
    • 2010-05-27
    • Sung-hee HWANGKyung-geun LeeIn-ho Hwang
    • Sung-hee HWANGKyung-geun LeeIn-ho Hwang
    • G06F12/16
    • G11B20/1883G11B2020/1826G11B2220/20G11B2220/235G11B2220/2537
    • An information storage medium includes: a user data area for recording user data; a spare area including spare blocks each for replacing a defective block occurring in the user data area; and a defect management area in which information about the defective block occurring in the user data area is recorded, wherein the spare blocks of the spare area include usable spare blocks with replacement blocks existing in forward parts of the usable spare blocks in a usage order, and usable spare blocks without replacement blocks existing in forward parts of the usable spare blocks in the usage order, wherein a next available position pointer of the spare area is recorded in the defect management area, and the next available position pointer of the spare area indicates a first usable spare block from among the usable spare blocks without the replacement blocks existing in the forward parts of the usable spare blocks in the usage order.
    • 信息存储介质包括:用于记录用户数据的用户数据区; 备用区,包括备用块,用于替换在用户数据区中发生的缺陷块; 以及缺陷管理区域,其中记录了在用户数据区域中发生的关于缺陷块的信息,其中备用区域的备用块包括使用顺序中存在可用备用块的前向部分中的替换块的可用备用块, 以及可用的备用块,其中使用顺序中存在于可用备用块的前端部分中的替换块,其中备用区的下一个可用位置指针被记录在缺陷管理区中,并且备用区的下一个可用位置指针指示 可用备用块中的第一可用备用块,而不使用存在于可用备用块的前向部分中的替换块。