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    • 61. 发明授权
    • 비디오 카세트 레코더의 제어신호 듀티비 판별 방법 및 장치
    • 控制信号负载辨别方法及录像机设备
    • KR1019950013377B1
    • 1995-11-02
    • KR1019880008053
    • 1988-06-30
    • 주식회사 엘지이아이
    • 김동수
    • G11B20/10
    • discriminating level variation of a control signal; if the control signal is changed from a low potential to a high potential, setting the signal as an up-counter to determinate whether or not a carry is generated according to the counted value; if the carry is generating, outputting a high potential of duty signal, but if the carry is not generated, outputting a low potential of duty signal; if the control signal is changed from the high potential to the low potential, setting the signal as a down-counter; if the level variation of the control signal does not exist, determinating whether set to the up-counter is executed; if the set to the up-counter is executed, performing an up counting operation by "1" and if set to the down-counter is executed, performing a down counting operation by "1" to thereby compare a count time with a reference time; and if the counter time is greater than the reference time, determining it as error generation to generate an error generation signal.
    • 识别控制信号的电平变化; 如果控制信号从低电位变为高电位,则将信号设置为递增计数器,以根据计数值确定进位是否产生; 如果进位正在产生,则输出高电位的占空比信号,但是如果不产生进位,则输出低电位的占空比信号; 如果控制信号从高电位变为低电位,则将该信号设置为递减计数器; 如果控制信号的电平变化不存在,则确定是否执行了向上计数器的设置; 如果执行了向上计数器的设置,则执行“1”的向上计数操作,并且如果被设置为递减计数器,则执行递减计数操作“1”,从而将计数时间与参考时间进行比较 ; 并且如果计数器时间大于参考时间,则将其确定为产生错误产生信号的错误产生。
    • 69. 发明授权
    • 브이씨알의 저속모드시 속도제어방법
    • 电机速度控制方法
    • KR1019910000960B1
    • 1991-02-19
    • KR1019870014237
    • 1987-12-14
    • 주식회사 엘지이아이
    • 김동수
    • G11B15/46
    • A method for controlling the travelling speed of a tape at the slow speed mode comprises the following routines of: setting a microprocessor with a slow flag; a key signal processing routine for setting a slow up flag or a slow down flag according to the input key signal; a slow speed mode control routine for resetting the slow up or down flags and for setting a slow counter; and a slow time control routine for providing the driving signal to a capstan motor during l time in case that the delay flag is not setting, calculating the value of a slow time counter according to the value of said slow counter, and increasing/decreasing the driving time of the capstan motor in accordance with the value of the slow time counter.
    • 用于以慢速模式控制带的行进速度的方法包括以下例程:设置具有缓慢标志的微处理器; 用于根据输入的键信号设置减速标志或减速标志的键信号处理程序; 用于复位慢速上升或下降标志并用于设置慢计数器的慢速模式控制程序; 以及缓慢时间控制程序,用于在延迟标志未设置的情况下,在l个时间内向主导轴电动机提供驱动信号,根据所述慢计数器的值计算慢时间计数器的值,并且增加/减少 主动马达的驾驶时间按照慢时间计数器的值。