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    • 85. 发明专利
    • MORSE SIGNAL PROCESSING METHOD
    • JPH1132090A
    • 1999-02-02
    • JP21793697
    • 1997-07-09
    • YAMAZAKI TSUTOMU
    • YAMAZAKI TSUTOMU
    • H04L15/04H04L15/24
    • PROBLEM TO BE SOLVED: To improve the identification of Morse codes by leading or delaying the timewise position of at least one edge part among the rising front edge part and falling rear edge part of Morse signals and adjusting the timewise length of the Morse signals and the timewise length of an interval. SOLUTION: A front edge delay part 3 delays the timewise position of the front edge of the Morse signals and a rear edge delay part 4 delays the timewise position of the rear edge. A capacitor C1 is charged by a time constant C1 R1 at the front edge of the Morse signals and discharged at the rear edge. For instance, if C1 =10 F, R1 =10 Ω and r1 =10Ω, the front edge of the Morse signals is delayed about 100 milliseconds with C1 R1 =100 millisecond. The rear edge essentially is not delayed with C1 r1 =0.01 millisecond. Similarly, if C2 =10 F, R2 =10 Ω and r2 =10Ω, the front edge essentially is not delayed with C2 r2 =0.01 millisecond. The rear edge is delayed by about 100 milliseconds with C2 R2 =100 milliseconds. A waveform is shaped in buffer logics B1 and B2 .
    • 89. 发明专利
    • Signal detecting method
    • 信号检测方法
    • JPS6141255A
    • 1986-02-27
    • JP16264084
    • 1984-07-31
    • Zeniraito V:Kk
    • SATO YUJI
    • H04L15/24H04L25/08H04L25/40
    • H04L25/40
    • PURPOSE:To detect accurately a specific mark with the prescribed timing and also to prevent the misoutput of the detection signal due to the misdetection, by using a comparatively short space deciding time which is slightly longer than a space of a long time width following a pre-space for detection of this pre-space and using a comparatively short mark deciding time slightly longer than a mark of a longer than a long time width following the specific mark for detection of this specific mark. CONSTITUTION:The space deciding time Ts is set at about 0.2sec, for example, that is shorter than the time width of a normal pre-space in a reception signal, i.e., the time width of the longest space and also slightly longer than the time width of the 2nd longest space. While the mark deciding time Tm is set at about 0.5sec, for example, that is shorter than the time width of a normal specific mark in the reception signal, i.e., the time width of the longest mark and also slightly longer than the time width of the 2nd longest mark. The time Ts has the shorter time width than that of the time Tm. Therefore a mark identification signal and the 1st and 2nd latch signals are outputted with the prescribed timing of a specific mark. Then this specific mark can be detected accurately with the prescribed timing.
    • 目的:在规定的时间内精确检测特定的标记,并且通过使用相对较短的空间决定时间,比预先设定的长时间宽度的空间稍长,以防止由于误检而导致的检测信号的错误输出 - 用于检测该预留空间的空间,并且使用比标记更长的比较短的标记决定时间,其长度大于具有用于检测该特定标记的特定标记的长时间宽度的标记。 构成:空间决定时间Ts设定为例如比接收信号中的正常预留空间的时间宽度短的约0.2秒,即最长空间的时间宽度,并且稍长于 时间宽度第二长的空间。 虽然标记判定时间Tm设定为例如比接收信号中的正常特定标记的时间宽度(即,最长标记的时间宽度)还稍长于时间宽度的大约0.5秒 是第二长的标记。 时间Ts具有比时间Tm短的时间宽度。 因此,标记识别信号和第一和第二锁存信号以特定标记的规定定时输出。 然后可以在规定的时间内准确检测该特定标记。