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公开(公告)号：KR1019910008433B1
公开(公告)日：1991-10-15
申请号：KR1019890008242
申请日：1989-06-15
Applicant: 한국전자통신연구원 , 전화기산업기술연구조합 , 주식회사KDC상사
IPC: G06K15/00
Abstract: The method for reading the permanent code written on the magnetic layer of the card comprises steps: a) amplifying the signal read by the magnetic head and filtering the high frequency noise; b) differentiating the filtered signal; c) detecting the zero point from the differentiated signal and providing pulse; and d) reproducing the information signal with the pulse.
Abstract translation: 读取写在卡的磁性层上的永久代码的方法包括步骤：a）放大由磁头读取的信号并滤除高频噪声; b）区分滤波信号; c）从微分信号检测零点并提供脉冲; 以及d）用脉冲再现信息信号。
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公开(公告)号：KR1019920005875B1
公开(公告)日：1992-07-23
申请号：KR1019890008241
申请日：1989-06-15
Applicant: 한국전자통신연구원 , 전화기산업기술연구조합 , 주식회사KDC상사
IPC: G11B20/08
Abstract: Magnetic material having high permiability is printed on a base film and a magnetic material having normal permiability is sprayed on the printed region flatly to record forgery prevention data. A reader detects the residual magnetism difference between the printed region and non-printed region to discriminate the forgery. The method includes: (A) detecting the residual magnetism using a magnetic head, amplifying the detected signal and eliminating noise having high frequency; (B) detecting the variation of the residual magnetic density; (C) modulating the digital signal having TTL level; and (E) reproducing the forgery protecting data.
Abstract translation: 具有高容许性的磁性材料被印刷在基膜上，并且具有正常可容性的磁性材料被平坦地喷涂在印刷区域上以记录防伪数据。 读取器检测打印区域和非印刷区域之间的残余磁差，以区分伪造。 该方法包括：（A）使用磁头检测剩磁，放大检测信号，消除高频噪声; （B）检测残留磁密度的变化; （C）调制具有TTL电平的数字信号; 和（E）再现伪造保护数据。
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Patent Agency Ranking
公开(公告)号：KR1019960008139B1
公开(公告)日：1996-06-20
申请号：KR1019930027636
申请日：1993-12-14
IPC: H03K19/086
Abstract: The ECL circuit is for improving the delaying problem for the signal transmission of the logic output. An input signal Vin and a first constant voltage signal Vbb are provided to a first transistor Q10 and a second transistor Q20, respectively. A second constant voltage signal Vcs is applied to a third transistor Q30. A fourth transistor Q40 and a fifth transistor Q60 provide output signals Voutb and Vout, respectively. A second voltage signal VEE is provided to a sixth transistor Q50 and a seventh transistor Q70 through R50 and R70.
Abstract translation: ECL电路用于改善逻辑输出信号传输的延迟问题。 输入信号Vin和第一恒定电压信号Vbb分别提供给第一晶体管Q10和第二晶体管Q20。 第二恒定电压信号Vcs被施加到第三晶体管Q30。 第四晶体管Q40和第五晶体管Q60分别提供输出信号Voutb和Vout。 第二电压信号VEE被提供给第六晶体管Q50和第七晶体管Q70至R50和R70。
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公开(公告)号：KR1019930001474B1
公开(公告)日：1993-02-27
申请号：KR1019900017925
申请日：1990-11-07
Applicant: 한국전자통신연구원
IPC: G06K19/06
Abstract: The circuit for integrating the total circuit a one chip comprises: a data modulating circuit (2) converting the serial data inputted from CPU (1) to the F2F (frequency two frequency) output signal; a current driving circuit (3) for recording the data to the magnetic card by changing of residual magnetic flux density; a head signal processing circuit (6) outputting the F2F input signal using analog signal induced when the data recorded magnetic card moves on the magnetic head for reading; a data demodulating circuit (7) outputting the data and the synchronizing pulse of same period to the CPU according to the level state change of F2F input signal.
Abstract translation: 用于将总电路集成为一个芯片的电路包括：数据调制电路（2），将从CPU（1）输入的串行数据转换为F2F（频率二频）输出信号; 用于通过改变剩余磁通密度将数据记录到磁卡的电流驱动电路（3）; 一个头信号处理电路（6），当数据记录磁卡在磁头上移动以读取时，使用模拟信号输出F2F输入信号; 数据解调电路（7）根据F2F输入信号的电平状态变化向CPU发送数据和相同周期的同步脉冲。
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公开(公告)号：KR1019920006122B1
公开(公告)日：1992-07-27
申请号：KR1019890009750
申请日：1989-07-08
Applicant: 한국전자통신연구원 , 전화기산업기술연구조합 , 주식회사KDC상사
IPC: G11B5/187
Abstract: The magnetic head for magnetic cards reads the variable information and the permanent information for preventing the counterfeit simultaneously. The head gap for recording and reading the variable information is formed at the lower side of the head approaching to the magnetic card. The permanent signal reader, which provides the head gap having the inclined angles (Q1) with the driving direction of the card, is parallely coupled with the variable information reader and recorder. The pivot which provides the inclined angle (Q2) at the edge of hed excepting the contacted area with a card supports the head. The outer terminal having the 3x2 matrix structure is formed on the back of the head body.
Abstract translation: 用于磁卡的磁头读取可变信息和用于防止伪造的永久信息。 用于记录和读取可变信息的磁头间隙形成在靠近磁卡的磁头的下侧。 提供具有卡的驱动方向的倾斜角度（Q1）的头部间隙的永久信号读取器与可变信息读取器和记录器平行耦合。 在卡的边缘处提供倾斜角（Q2）的枢轴除了与卡的接触区域支撑头部。 具有3×2矩阵结构的外部端子形成在头部本体的背面。
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