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    • 12. 发明授权
    • Recording and playbackk apparatus
    • 录音和播放设备
    • US5617535A
    • 1997-04-01
    • US978729
    • 1992-11-19
    • Toshiro AizawaShigemitsu HiguchiHiromasa Fujii
    • Toshiro AizawaShigemitsu HiguchiHiromasa Fujii
    • G11B5/00G11B15/00G11B15/02G11B19/04G11B20/18G11B27/34G11B27/36G11B33/00G11B33/10H04N5/782G06F11/00
    • G11B27/34G11B15/026G11B19/04G11B27/36H04N5/782
    • A recording and playback apparatus for recording and playing back onto and from a magnetic tape and utilizable with a memory card adapted to be mounted onto the apparatus. The memory card is adapted to at least one of store operational characteristics for the apparatus to enable automatic setting of the operational characteristics of the apparatus when mounted and, if the apparatus includes a self-diagnostic information unit, the memory card enables storage of at least self-diagnostic information generated upon occurrence of a trouble during operation of the apparatus. The stored self-diagnostic information enables analyzing of the cause of a cause of the trouble occurring during operation of the apparatus at a time subsequent to the occurrence and taking of countermeasures with respect thereto. If the memory card is not mounted or is in a nonwritable state, the apparatus is provided with a storage device for storing the self-diagnostic information. The memory card also enables storage of other information relating to the apparatus.
    • 一种记录和播放装置,用于在磁带上记录和播放并且可用于适于安装到设备上的存储卡。 存储卡适于装置的存储操作特性中的至少一个,以便能够在安装时自动设置装置的操作特性,并且如果装置包括自诊断信息单元,则存储卡至少能够存储 在设备操作期间发生故障时产生的自诊断信息。 所存储的自诊断信息能够分析在发生和发生对策之后的时间期间设备操作期间发生故障的原因。 如果存储卡未安装或处于不可写状态,则该设备设置有用于存储自诊断信息的存储设备。 存储卡还能够存储与该装置有关的其它信息。
    • 15. 发明授权
    • Digital video signal reproducing apparatus with compression and
expansion of playback time
    • 具有压缩和扩展播放时间的数字视频信号再现装置
    • US5392163A
    • 1995-02-21
    • US161455
    • 1993-12-06
    • Shigemitsu HiguchiAtsuo SugaYuji InabaToshiro Aizawa
    • Shigemitsu HiguchiAtsuo SugaYuji InabaToshiro Aizawa
    • G11B15/43G11B15/467G11B20/00G11B20/10H04N5/783H04N5/919H04N5/92H04N5/926H04N9/802H04N5/78
    • H04N5/926G11B15/43G11B15/4671G11B20/00007H04N5/783H04N5/919H04N9/802
    • For the purpose of data compression and expansion in the playback mode reproducing data including video data and audio data recorded on a magnetic tape, a relative speed signal is generated from a circuit on the basis of the moving speed of the magnetic tape and the rotation speed of a head drum, and the characteristic of the recorded data is controlled according to this relative speed signal. The tension of the magnetic tape is detected by a circuit, and the phase difference between the detected tape tension signal and a reel rotation speed command signal is detected by a circuit so as to control the tape tension according to the detected phase difference. When a target value of the drum rotation speed is changed, a drum drive signal is changed stepwise at a predetermined time interval, and the amount of delay of a drum rotation reference signal delayed according to a signal indicative of the rotation speed of a capstan is changed, so as to determine the range in which both the capstan rotation speed and the drum rotation speed can be changed. Interfaces are disposed between a system controller and a pitch controller so as to control the tone pitch of the audio signal according to the capstan rotation speed signal.
    • 为了在重放模式下进行数据压缩和扩展,再现包括记录在磁带上的视频数据和音频数据的数据,基于磁带的移动速度和转速,从电路产生相对速度信号 并且根据该相对速度信号控制记录数据的特性。 通过电路检测磁带的张力,通过电路检测检测到的带张力信号和卷轴转速指令信号之间的相位差,以根据检测到的相位差来控制带张力。 当滚筒旋转速度的目标值改变时,滚筒驱动信号以预定的时间间隔逐步改变,并且根据表示主导体的转速的信号而延迟的滚筒旋转基准信号的延迟量是 改变,以便确定可以改变主导轮转速和转鼓旋转速度的范围。 接口设置在系统控制器和俯仰控制器之间,以便根据主导轴转速信号来控制音频信号的音调。
    • 16. 发明授权
    • Digital magnetic reproducing apparatus with variable tape speed
    • 具有可变磁带速度的数字磁再现装置
    • US5057949A
    • 1991-10-15
    • US421358
    • 1989-10-13
    • Atsuo SugaShigemitsu HiguchiHideo NishijimaKaneyuki OkamotoMasataka Sekiya
    • Atsuo SugaShigemitsu HiguchiHideo NishijimaKaneyuki OkamotoMasataka Sekiya
    • H04N5/92G11B5/588G11B5/592G11B15/18G11B15/467H04N5/783
    • G11B15/1875G11B15/4677G11B5/592
    • A magnetic recording and reproducing apparatus having a construction in which a digital signal including index signals recorded on a magnetic tape is reproduced and rotary magnetic heads are movable. The digital signal is reproduced by digital signal reproducing means including the rotary magnetic heads. A particular index signal among the index signals is detected by index signal detecting means. Further, the timing for reproducing the particular index signal is detected by timing detecting means. The rotary magnetic heads are moved and deviated in the direction of the rotary shaft of the rotary cylinder by rotary magnetic head position deviating means. Tape speed detecting means compares a reproduction clock with a reference clock and outputs a tape speed signal. First rotary magnetic head position deviation control means forms a control input for the rotary magnetic head position deviating means on the basis of the tape speed signal. Second rotary magnetic head position deviation control means forms the control input for the rotary magnetic head position deviating means on the basis of an output signal of the timing detecting means.
    • 具有这样的结构的磁记录和再现装置,其中再现包括记录在磁带上的索引信号的数字信号,旋转磁头是可移动的。 数字信号由包括旋转磁头的数字信号再现装置再现。 索引信号中的特定索引信号由索引信号检测装置检测。 此外,由定时检测装置检测用于再现特定索引信号的定时。 旋转磁头通过旋转磁头位置偏移装置在旋转磁盘的旋转轴的方向上移动和偏离。 磁带速度检测装置将再现时钟与参考时钟进行比较并输出磁带速度信号。 第一旋转磁头位置偏差控制装置基于带速度信号形成用于旋转磁头位置偏离装置的控制输入。 第二旋转磁头位置偏差控制装置基于定时检测装置的输出信号形成用于旋转磁头位置偏移装置的控制输入。
    • 17. 发明授权
    • Video signal processing circuit
    • 视频信号处理电路
    • US5041904A
    • 1991-08-20
    • US327594
    • 1989-03-23
    • Shigemitsu HiguchiHisanobu TsukazakiMotohiro Sasaki
    • Shigemitsu HiguchiHisanobu TsukazakiMotohiro Sasaki
    • H04N9/77H04N9/78
    • H04N9/78Y10S348/91
    • In a digital video signal processing circuit where digital composite video signals are inputted and processed in separation into a luminance signal and a chrominance signal, the digital video signal processing circuit is provided with a device for separating a first frequency component including a luminance signal in a relatively low region from the digital composite video signals, a device for separating a second frequency component including a luminance signal in the vicinity of a color subcarrier and a chrominance signal, a line comb-shaped filter for separating the second frequency component into the luminance signal in the vicinity of the color subcarrier and the chroninance signal, an adding device for adding the first frequency component and the luminance signal in the vicinity of the color subcarrier, a phase inversion device for inverting the phase of the chrominance signal, and an adding device for adding the chrominance signal in phase inversion to the first frequency component or the luminance signal in the vicinity of the color subcarrier, so that the picture quality of the reproduction image can be improved.
    • 在将数字复合视频信号分离输入并分离成亮度信号和色度信号的数字视频信号处理电路中,数字视频信号处理电路设置有用于分离包含亮度信号中的亮度信号的第一频率分量的装置 来自数字复合视频信号的相对低的区域,用于分离包括彩色副载波附近的亮度信号的第二频率分量和色度信号的装置,用于将第二频率分量分离成亮度信号的线梳状滤波器 在彩色副载波附近和高频信号附近,添加装置,用于将彩色副载波附近的第一频率分量和亮度信号相加,用于反相色度信号的相位的相位反转装置和加法装置 用于将相位反相中的色度信号添加到第一频率分量 或彩色副载波附近的亮度信号,从而可以提高再现图像的图像质量。
    • 18. 发明授权
    • Control circuit for a stepping motor
    • 步进电机控制电路
    • US4661754A
    • 1987-04-28
    • US732696
    • 1985-05-10
    • Taiji TajimaShigemitsu Higuchi
    • Taiji TajimaShigemitsu Higuchi
    • H02P8/00H02P8/14H02P8/18
    • H02P8/14H02P8/18
    • A control circuit comprises a first counter for counting up stepping pulses and counting down the number of steps of a stepping motor, a memory for storing therein a drive timing of the stepping motor, a variable timer for converting a data in the memory to a real time, a second counter for counting up an output signal of the variable timer when a count of the second counter is smaller than a count of the first counter and counting down the output signal of the variable timer when the count of the second counter is equal to or larger than the count of the first counter, and a drive circuit for driving the stepping motor in accordance with the output signal of the variable timer.Signals to set the first counter in the count-up mode and the count-down mode are synchronized with two clock signals having the same frequency and different phases. The control circuit drives the stepping motor immediately after the control pulse signal was applied to accelerate or decelerate the stepping motor so that a velocity pattern of the stepping motor is controlled in a pedestal pattern.
    • 控制电路包括:第一计数器,用于对步进脉冲进行计数和对步进电机的步数进行计数;存储器,用于存储步进电机的驱动定时;可变定时器,用于将存储器中的数据转换为真实的 当第二计数器的计数小于第一计数器的计数并且当第二计数器的计数相等时对可变定时器的输出信号进行计数,计数可变定时器的输出信号的第二计数器 达到或大于第一计数器的计数,以及用于根据可变定时器的输出信号驱动步进电机的驱动电路。 用于将第一个计数器置于递增模式和递减模式的信号与具有相同频率和不同相位的两个时钟信号同步。 控制电路在施加控制脉冲信号之后立即驱动步进电机,以加速或减速步进电机,使得步进电机的速度模式被控制在基座图案中。