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1. 发明专利

JPH0312382B2 失效
公开(公告)号：JPH0312382B2
公开(公告)日：1991-02-20
申请号：JP6554783
申请日：1983-04-15
申请人： HITACHI LTD
发明人： NISHIJIMA HIDEO , KOBORI YASUNORI , FUKUSHIMA ISAO , GOTO KATSUHIKO , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： H04N5/7826 , G11B15/467

2. 发明专利

JPS59191165A Servo device of magnetic recording and reproducing device 失效
标题翻译：磁记录和再现装置伺服装置
公开(公告)号：JPS59191165A
公开(公告)日：1984-10-30
申请号：JP6554783
申请日：1983-04-15
申请人： Hitachi Ltd
发明人： NISHIJIMA HIDEO , KOBORI YASUNORI , FUKUSHIMA ISAO , GOTOU KATSUHIKO , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： H04N5/7826 , G11B15/467
CPC分类号： G11B15/467
摘要： PURPOSE:To reduce the deterioration of S/N ratio, etc. in picture quality at the place near a joint area by deciding the phase jump of a capstan servo system of a consecutive recording mode from the resolution of the clock frequency which produces a reference signal. CONSTITUTION:When a pause switch 19 is operated, a record state (''L'' period) is set with a delay equivalent to a period of time required for matching of phase between the synchronizing signal on a magnetic tape 1 and the synchronizing signal to be newly recorded as shown in a waveform 21 given from a system controller 20. Then a signal generator 33 delivers at least >=1 shot pulse outputs 34 which are synchronous with the output 28 of a frequency divider 18. Thus a frequency divider 32 is preset. At the same time, a switch 12 is inverted. Then the input to be supplied to a phase comparator 15 is changed to the output 28 of the divider 18 from a reproduction synchronizing signal 27. The phase jump which is generated at this time point is set at maximum (2pi/M) radian as shown by a waveform 35 in the figure, where M defines the dividing ratio of the divider 32.
摘要翻译：目的：通过从产生参考的时钟频率的分辨率决定连续记录模式的主导轴伺服系统的相位跳跃来减少关节区附近的图像质量的S / N比等的劣化信号。构成：当暂停开关19被操作时，记录状态（“L”周期）被设置为具有等于在磁带1上的同步信号与同步信号之间的相位匹配所需的时间段的延迟如从系统控制器20给出的波形21中所示的那样被新记录。然后，信号发生器33传送与分频器18的输出28同步的至少≥1个触发脉冲输出34。因此，分频器32 是预设的。同时，开关12反转。然后，将要提供给相位比较器15的输入从再现同步信号27改变为分频器18的输出28.在该时间点产生的相位跳变被设置为最大（2pi / M）弧度，如图所示通过图中的波形35，其中M定义分频器32的分频比。

3. 发明专利

JPS5930259A Servo device of magnetic recording and reproducing device 失效
标题翻译：磁记录和再现装置伺服装置
公开(公告)号：JPS5930259A
公开(公告)日：1984-02-17
申请号：JP13850482
申请日：1982-08-11
申请人： Hitachi Ltd
发明人： KOBORI YASUNORI , NISHIJIMA HIDEO , FUKUSHIMA ISAO , GOTOU KATSUHIKO , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： H04N5/7826 , G11B15/467 , G11B15/52 , G11B27/02
CPC分类号： G11B15/52
摘要： PURPOSE:To record a continuous control signal during concatenate recording by recording the control signal on a magnetic tape during switching from reproducing to recording and then supplying the output signal of a frequency generator to the phase synchronizing circuit for a capstan motor. CONSTITUTION:A control (CTL) head 17 records a CTL signal D. The output of a reference oscillator 23 is supplied to a frequency divider 24 to obtain a reference signal I, which drives a trapezoid wave generator 25. The signal of the frequency generator (FG), on the other hand, is passed through a frequency divider 30 and a sampling puluse generator 27 to supply a pulse G to a sample holding circuit 26. The circuit 26 samples and holds the slanted part of the trapezoid wave output of the trapezoid wave generator 25 to control a capstan 6 through an amplifier 28. When a delay circuit 32 operates in a reoperating state after a pause state, the signal D presets the reference signal I through a differentiation circuit 36 and the frequency divider 24 to synchronize the signals I and D with each other. Therefore, the continuous control signal is recorded during concatenate recording.
摘要翻译：目的：通过在从再现到记录切换期间将控制信号记录在磁带上，然后将频率发生器的输出信号提供给主导轴马达的相位同步电路，在级联记录期间记录连续控制信号。构成：控制（CTL）头17记录CTL信号D.参考振荡器23的输出被提供给分频器24，以获得驱动梯形波发生器25的参考信号I.频率发生器的信号（FG）另一方面通过分频器30和采样脉冲发生器27，以将脉冲G提供给采样保持电路26.电路26采样并保持脉冲G的梯形部分梯形波发生器25通过放大器28控制主导轴6.当延迟电路32在暂停状态之后以再操作状态操作时，信号D通过微分电路36和分频器24预设参考信号I，信号I和D彼此。因此，在级联录制期间记录连续控制信号。

4. 发明专利

JPS60211513A Device for correcting steady-state speed error 失效
标题翻译：用于校正稳态速度错误的装置
公开(公告)号：JPS60211513A
公开(公告)日：1985-10-23
申请号：JP6766384
申请日：1984-04-06
申请人： Hitachi Ltd
发明人： KOBORI YASUNORI , OKAMOTO CHIKAYUKI , FUKUSHIMA ISAO , NISHIJIMA HIDEO , KANOU KENJI , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： G05D13/62 , G05B11/36 , H02P23/00 , H02P29/00
CPC分类号： H02P23/16
摘要： PURPOSE:To allow the device to correct automatically a speed offset due to temperature changes or aging changes for itself by using frequency shift information detected by a frequency-voltage converter to change a signal being a reference of the converter. CONSTITUTION:It is supposed that a motor 9 has a speed offset at steady-state and a frequency (f) of an FG signal is provided as f=f0+DELTAf1. A steady-state speed error detecting circuit 11 extracts a DC component of the DELTAf1 in this case, sets a preset value of a preset circuit 4 to N0-DELTAN1 and fixes it to the value. As a result, an output H of a latch circuit 6 is H-DELTAH1 at the measurement of the next FG period, an output of a D/A converter 7 is V-DELTAV1 and the speed of the motor 9 is made slightly slow. Thus, when the state reaches the steady-state again, the frequency of the FG signal is f=f0+DELTAf1-f2 and approaches the reference signal f0. When the steady-speed error DELTAf1-f2 is large, the circuit 11 detects again the steady-state error and rewrites the preset value of the circuit 4 to N0-DELTAN1-DELTAN2. As a result, the speed of the motor 9 slows down further and approaches the prescribed speed.
摘要翻译：目的：通过使用由频率 - 电压转换器检测到的频移信息来改变作为转换器参考的信号，允许设备自动校正由于温度变化或其老化变化引起的速度偏移。构成：假设电动机9在稳态下具有速度偏移，并且FG信号的频率（f）被提供为f = f0 + DELTAf1。在这种情况下，稳态速度误差检测电路11提取DELTAf1的DC分量，将预设电路4的预设值设置为N0-DELTAN1并将其固定为该值。结果，在下一个FG周期的测量时，锁存电路6的输出H为H-DELTAH1，D / A转换器7的输出为V-DELTAV1，电动机9的速度略慢。因此，当状态再次达到稳态时，FG信号的频率为f = f0 + DELTAf1-f2并接近参考信号f0。当稳定速度误差DELTAf1-f2较大时，电路11再次检测稳态误差，并将电路4的预置值重写为N0-DELTAN1-DELTAN2。结果，马达9的速度进一步减慢并接近规定的速度。

5. 发明专利

JPS5938804A Method and device for correcting steady-state phase error 失效
标题翻译：用于校正稳态相位误差的方法和装置
公开(公告)号：JPS5938804A
公开(公告)日：1984-03-02
申请号：JP14930382
申请日：1982-08-30
申请人： Hitachi Ltd
发明人： KOBORI YASUNORI , OKAMOTO CHIKAYUKI , NISHIJIMA HIDEO , FUKUSHIMA ISAO , GOTOU KATSUHIKO , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： G11B15/467 , G05B11/36 , H02P23/00
CPC分类号： H02P23/186
摘要： PURPOSE:To correct a DC phase error accurately and stably without malfunctions due to a stationary phase fluctuation and a sporadic disturbing input, by smoothing a phase error output to detect the DC phase error. CONSTITUTION:A phase comparator 28 outputs a digital signal (a binary bit signal train) corresponding to the phase difference between two input pulses (a reference pulse and a feedback phase control pulse). A latch output C of the phase comparator 28 has only DC components extracted by a digital low-pass filter (LPF) 26. The output of this LPF26 is connected to a preset circuit 32 of a speed control circuit 13, and a preset value P0 of a detecting counter 23 is changed in accordance with the change of the output of the LPF26. A preset value of a detecting counter 33 of the speed control circuit 13 is changed to change a speed control output J, thus correcting the steady-state phase error.
摘要翻译：目的：通过平滑相位误差输出以检测直流相位误差，可以通过平稳的相位波动和零星干扰输入来正确，稳定地校正直流相位误差，而不会发生故障。构成：相位比较器28输出与两个输入脉冲（参考脉冲和反馈相位控制脉冲）之间的相位差对应的数字信号（二进制位信号序列）。相位比较器28的锁存输出C仅具有由数字低通滤波器（LPF）26提取的直流分量。该LPF26的输出连接到速度控制电路13的预设电路32，并且预设值P0 根据LPF26的输出的变化来改变检测计数器23。改变速度控制电路13的检测计数器33的预设值，以改变速度控制输出J，从而校正稳态相位误差。

6. 发明专利

JPS6259379B2 失效
公开(公告)号：JPS6259379B2
公开(公告)日：1987-12-10
申请号：JP13850482
申请日：1982-08-11
申请人： HITACHI LTD
发明人： KOBORI YASUNORI , NISHIJIMA HIDEO , FUKUSHIMA ISAO , GOTO KATSUHIKO , ICHIMURA SHINYA , OIKAWA TADAYOSHI , KAWABATA HIROMI
IPC分类号： H04N5/7826 , G11B15/467 , G11B15/52 , G11B27/02

7. 发明专利

JPS59191983A Still picture reproducer of magnetic recording and reproducing device 失效
标题翻译：磁记录和再现设备的静态图像再现器
公开(公告)号：JPS59191983A
公开(公告)日：1984-10-31
申请号：JP6554983
申请日：1983-04-15
申请人： Hitachi Ltd
发明人： KOBORI YASUNORI , OKAMOTO CHIKAYUKI , SEKIYA MASATAKA , FUKUSHIMA ISAO , NISHIJIMA HIDEO , ISHIKAWA SHIGERU , KAWABATA HIROMI
IPC分类号： H04N5/93
CPC分类号： H04N5/93
摘要： PURPOSE:To suppress the generation of noise by detecting the signal corresponding to a noise part in a still picture screen with use of a horizontal synchronizing signal contained in a composite synchronizing signal and using a pulse to drive a tape driving motor. CONSTITUTION:In a still reproduction mode a switch 11 is connected to the (b) side, and a capstan motor 8 is driven with control by a still control means 12. A horizontal synchronizing signal A separated by a signal processing circuit 7 is impressed to a noise detecting means 13 and converted into a signal B with which the missing of horizontal synchronism, noise, etc. are detected. If a signal C lacks the horizontal synchronism, a noise part is decided by the second shot signal of the noise detection signal B. Then the signal C is delivered from a waveform shaping circuit 14. A drive pulse generating circuit 15 is triggered at the rise edge of the signal C, and a signal D is delivered. The signal D is supplied to a driving circuit 9, and a capstan motor 15 is pulse driven at a low speed.
摘要翻译：目的：通过使用包含在复合同步信号中的水平同步信号并使用脉冲来驱动磁带驱动电机，通过检测与静止图像屏幕中的噪声部分相对应的信号来抑制噪声的产生。构成：在静止再现模式中，开关11连接到（b）侧，主导电动机8由静止控制装置12控制地驱动。由信号处理电路7分离的水平同步信号A被压入噪声检测装置13，并被转换为检测到水平同步，噪声等缺失的信号B. 如果信号C缺少水平同步，则噪声部分由噪声检测信号B的第二拍摄信号决定。然后信号C从波形整形电路14传送。驱动脉冲发生电路15在上升时被触发信号C的边缘和信号D被传送。信号D被提供给驱动电路9，主导轴电动机15以低速脉冲驱动。

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