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81. 发明专利

JPS6116078A Magnetic disk device 失效
标题翻译：磁盘设备
公开(公告)号：JPS6116078A
公开(公告)日：1986-01-24
申请号：JP13595484
申请日：1984-06-30
申请人： Toshiba Corp
发明人： YOSHIKAWA TADASHI
IPC分类号： G11B21/08 , G11B5/55 , G11B19/04 , G11B21/12
CPC分类号： G11B5/5526 , G11B19/04
摘要： PURPOSE:To attain read-out of the data recorded to the entire recording area excluding the faulty parts by using selectively the most outer or inner circumferential track as a start position. CONSTITUTION:A start position changeover switch 16 is set to put an outer guard band detecting circuit 13 under an action inhibiting mode. While an inner guard band detecting circuit 14 is put under an action mode to perform a disk loading action. This action is different from the normal one and no position control is carried out in an outer guard band. The position control is performed after a head moves up to the most inner guard band. The head is stopped on the most inner circumferential track, and this track is set to a reference counter 19. Thus a magnetic disk can be loaded despite the destruction of the most outer circumferential servo signal. Then all data excluding the destructed areas can be read out.
摘要翻译：目的：通过选择性地使用最外侧或内圆周轨迹作为起始位置，可以读取记录到整个记录区域的数据，而不包括故障部件。构成：设置开始位置切换开关16，将外部保护带检测电路13置于动作抑制模式。当内部保护带检测电路14处于动作模式以执行磁盘加载动作时。该动作与正常动作不同，在外部保护带中不进行位置控制。在头部移动到最内侧保护带之后执行位置控制。头部停在最内圆周轨道上，该轨道被设置为参考计数器19.因此，尽管最外周伺服信号被破坏，也可以装载磁盘。然后可以读出不包括被破坏区域的所有数据。

82. 发明专利

JPS59215082A Magnetic disc device 失效
标题翻译：磁碟设备
公开(公告)号：JPS59215082A
公开(公告)日：1984-12-04
申请号：JP8828683
申请日：1983-05-19
申请人： Tokico Ltd
发明人： SUGIYAMA TOKUJI
IPC分类号： H02P8/32 , G11B5/55 , G11B21/08 , H02P8/00
CPC分类号： G11B5/5526
摘要： PURPOSE:To attain read/write of information instantly by providing a control circuit outputting the final one pulse with a signal from a peak value detecting circuit after pulses less than a prescribed number by one pulse is outputted to minimize the vibration of a magnetic head at positioning. CONSTITUTION:A control circuit 13 sets a numeral (n) inputted from a signal line 14 to an internal subtraction counter, (n-1)-set of step pulses are being outputted in a prescribed pulse rate, the circuit 13 becomes in the standby state to the final pulse and outputs the n-th step pulse after the magnetic head 3 is stopped first during the standy of the control circuit 13. Since the control circuit 13 outputs the (n-1)-th pulse and outputs the n-th pulse when the pulse signal falls down first after the standby state, a stepping motor 8 is turned further by one track's share. As a result, the amplitude of the attenuating oscillation on the n-th track is brought into a minimized amplitude and the magnetic head 3 is positioned on the objective n-th track in the shortest time suitably.
摘要翻译：目的：输出一个控制电路，通过提供输出最后一个脉冲的控制电路，在脉冲数小于规定数量的脉冲之前输出来自峰值检测电路的信号，以最小化磁头的振动定位。构成：控制电路13将从信号线14输入的数字（n）设定为内部减法计数器（n-1），以规定的脉冲率输出步进脉冲，电路13成为待机状态状态为最终脉冲，并且在控制电路13的状态期间首先停止磁头3之后输出第n个步进脉冲。由于控制电路13输出第（n-1）个脉冲并输出n- 当脉冲信号在待机状态之后首先下降时，步进电机8进一步转动一个磁道的共享。结果，将第n个磁道上的衰减振荡的振幅调制成最小化的幅度，并且磁头3在最短的时间内适当地位于物镜第n个磁道上。

83. 发明专利

JPS59124021A Safety device of tracking mechanism in magnetic recording device 失效
标题翻译：磁记录装置中跟踪机构的安全装置
公开(公告)号：JPS59124021A
公开(公告)日：1984-07-18
申请号：JP23133382
申请日：1982-12-29
申请人： Tokyo Electric Co Ltd
发明人： OGAWA IZUMI , SUGIYAMA TOSHIO , AOKI CHIHIRO
IPC分类号： G11B5/55 , G11B5/584 , G11B5/588
CPC分类号： G11B5/5526
摘要： PURPOSE:To prevent a deformation and a breakdown accident of a movable body by stopping a tracking motor securely by the signal from an emergency stop sensor even when the tracking motor rotates owing to an error of the detection of a zero-track sensor. CONSTITUTION:A magnetic head 18 records or reproduces data. Then, the rotation of the tracking motor 9 is transmitted to a feed screw 14 through gears 10 and 12 and a head base 19 moves in a track direction together with the magnetic head 18, etc., to select a specified track. When holes 29 of gears 26 and 28 are aligned to each other, the zero-track sensor 30 outputs a signal to indicate that the magnetic head 18 is at a track-zero position. When the base 19 moves down beyond a permissible stroke, a boss 31 turns on the emergency stop sensor 32 to stop the motor 9. Consequently, the deformation and breakdown accidents of the moving body are prevented.
摘要翻译：目的：为了防止由于检测到零轨道传感器的错误而使跟踪电机旋转时，通过紧急停止传感器的信号使跟踪电机牢固地停止，可以防止移动体发生变形和故障事故。构成：磁头18记录或再现数据。然后，跟踪电动机9的旋转通过齿轮10和12传递到进给螺杆14，并且头部基座19与磁头18等一起在轨道方向上移动以选择指定的轨道。当齿轮26和28的孔29彼此对准时，零轨道传感器30输出一个信号以指示磁头18处于轨道零位置。当基座19向下移动超过允许冲程时，凸台31打开紧急停止传感器32以停止马达9.因此，防止移动体的变形和击穿事故。

84. 发明专利

JPS59113572A Measuring device of off-track quantity of magnetic disc device 失效
标题翻译：磁盘设备离轨量的测量装置
公开(公告)号：JPS59113572A
公开(公告)日：1984-06-30
申请号：JP22418982
申请日：1982-12-21
申请人： Mitsubishi Electric Corp
发明人： TAMAMUSHI SEIICHIROU , SAKAI HIDEAKI , MAEKAWA ZENROKU
IPC分类号： G11B21/10 , G11B5/55
CPC分类号： G11B5/5526
摘要： PURPOSE:To measure easily an off-track quantity, by writing two or more signals different in frequency onto adjacent concentric circles of a disc and reading out these signals simultaneously by a magnetic head and comparing levels of two or more read-out frequency components. CONSTITUTION:A magnetic head 2 is positioned in a preliminarily set position by an external positioning mechanism 5, and a signal having a frequency f1 is outputted from a write data oscillator 7, and this signal is written on a magnetic disc 3 by a writing circuit 6. The magnetic head 2 is moved for a preliminarily set length by the external positioning mechanism 5, and a signal having a frequency f2 is outputted from the write data oscillator 7, and this signal is written on the magnetic disc 3 by the writing circuit 6. The magnetic head 2 is moved for a prescribed length from a center position 20 of a preliminarily set track by the external positioning mechanism 5, and signals are read out by a reading circuit 9, and output signals are inputted to a frequency analyzer to perform the frequency analysis.
摘要翻译：目的：通过将两个或更多个频率不同的信号写入光盘的相邻同心圆上，通过磁头同时读出这些信号并比较两个或多个读出的频率分量的电平，来轻松测量离轨量。构成：磁头2由外部定位机构5位于预先设定的位置，从写入数据振荡器7输出具有频率f1的信号，该信号通过写入电路写入磁盘3 磁头2通过外部定位机构5移动预先设定的长度，从写入数据振荡器7输出具有频率f2的信号，该信号由写入电路写入磁盘3 磁头2由外部定位机构5从预先设定的轨道的中心位置20移动规定长度，由读取电路9读出信号，并将输出信号输入到频率分析仪进行频率分析。

85. 发明专利

JPS5952474A Magnetic disc device 失效
标题翻译：磁碟设备
公开(公告)号：JPS5952474A
公开(公告)日：1984-03-27
申请号：JP16120782
申请日：1982-09-16
申请人： Toshiba Corp
发明人： HAMAOKA HIROMI
IPC分类号： G11B21/10 , G11B5/55
CPC分类号： G11B5/5526
摘要： PURPOSE:To increase the amount of data, by producing a position signal from a selected head and switching a head selecting means at each fixed time so as to obtain position information at all times and to attain accurate positioning of a head even if the number of servo sectors is decreased. CONSTITUTION:The head selecting circuit 3 switches the head at each fixed time with a timer circuit 28 based on a position signal (a). The position signal (a) changes as ''+'',''-'',''+'' and the position signal being ''0'' is inputted to a cylinder pulse producing circuit 22 at each crossing of the head over the track. In the position information of the disc, each position of the servo sector (10, 10a in Figure) recording the position information corresponding to an even number head is shifted by 180 deg. and in obtaining the position information at the shift of head, the head is switched from the even number head to the odd number head at each fixed time, then even if the amount of position information is reduced by decreasing the servo sector 10 on the disc, the cylinder pulse is generated surely.
摘要翻译：目的：为了增加数据量，通过从所选择的头部产生位置信号并在每个固定时间切换头部选择装置，以便始终获得位置信息并且即使数量伺服扇区减少。构成：头部选择电路3基于位置信号（a），利用定时器电路28在每个固定时间切换头部。位置信号（a）以“+”，“ - ”，“+”的形式变化，位置信号为“0”，在头部的每个交叉处输入到气缸脉冲发生电路22 在轨道上。在盘的位置信息中，记录与偶数头相对应的位置信息的伺服扇区（图10,10a）的每个位置偏移了180度。并且在头部移位获得位置信息时，头部在每个固定时间从偶数头切换到奇数头，然后即使通过减小盘上的伺服扇区10来减少位置信息量气瓶脉冲可靠地产生。

86. 发明专利

JPS5922267A Magnetic disc device 失效
标题翻译：磁碟设备
公开(公告)号：JPS5922267A
公开(公告)日：1984-02-04
申请号：JP13149882
申请日：1982-07-28
申请人： Nec Corp
发明人： MIYAZAKI OSAMU
IPC分类号： G11B21/08 , G11B5/55
CPC分类号： G11B5/5526
摘要： PURPOSE:To prevent a seek error and to improve the processing efficiency of a high-order device, by providing a magnetic disc device with functions to compare an objective cylinder address with cylinder address information included in the data and to detect the result of the seeking operation and retry the seeking operation. CONSTITUTION:An objective cylinder address signal (a) sent from a high-order device is inputted to a seek controlling circuit 2 and a comparison retrying circuit 7 as an objective cylinder address (b) inside the magnetic disc device. The circuit 2 drives a positioner 3 by a seek controlling circuit (c) to seek up to the objective cylinder, and at the completion of seek, sends a cylinder matching signal (d) to the circuit 7. Data including the cylinder address information is read out by a magnetic head 4, sent to the high-order device as data (f) and also inputted to the circuit 7. At the reception of the signal (d), the circuit 7 compares the cylinder address included in the data (f) with the signal (b), and when both signals coincide with each other, a seek completion signal (h) is sent to the high-order device. In case of dissidence, a seek retrying signal (g) is sent to the circuit 2 and the seeking operation is repeated until both the signals coincide with each other.
摘要翻译：目的：为了防止寻找错误并提高高阶设备的处理效率，通过提供具有将目标气缸地址与数据中包含的气缸地址信息进行比较的功能的磁盘设备，并检测寻找结果操作并重试寻求操作。构成：从高位装置发送的目标气缸地址信号（a）被输入到磁盘装置内的寻道控制电路2和比较重试电路7作为目标气缸地址（b）。电路2通过搜索控制电路（c）驱动定位器3，直到目标气缸，而在完成寻道时，将气缸匹配信号（d）发送到电路7.包括气缸地址信息的数据是由磁头4读出，作为数据（f）发送到高阶装置，并且还输入到电路7.在接收到信号（d）时，电路7比较包括在数据（ f）与信号（b），并且当两个信号彼此一致时，搜索完成信号（h）被发送到高阶器件。在不一致的情况下，向电路2发送寻道重试信号（g），重复寻道操作，直到两个信号彼此一致。

87. 发明专利

JPS592266A Magnetic recording and reproducing device 失效
标题翻译：磁记录和再现设备
公开(公告)号：JPS592266A
公开(公告)日：1984-01-07
申请号：JP10840682
申请日：1982-06-25
申请人： Hitachi Ltd
发明人： FUJITA NAOYA , TAKEDA KATSUNOBU
IPC分类号： G11B21/10 , G11B5/55
CPC分类号： G11B5/5526
摘要： PURPOSE:To shift a head up to its optimum position in a short time, by sending the head at a high speed until a reproduced signal is obtained, then the sending speed is lowered to give the wave detection of envelope curve to the reproduced signal, and detecting the maximum level to stop the head at the position of the maximum level. CONSTITUTION:When a magnetic head 8 moves on a magnetic sheet 9 toward a signal recording part 17b. In this case, the head 8 is shifted at a high speed via a motor control circuit 2 unitl the reproduction voltage 18 reaches up to a fixed level 19. The position information of the head 8 at that time point is calculated in the form of the number of output pulses of a rotary encoder 10 and then stored in a memory 15. Then a motor 4 is repetitively revolved at a low speed and stopped until the number of output pulses of the encoder 10 reaches a fixed level with a command given from the circuit 2. Then the head 8 is sent back to a position equivalent to the sum of the number of output pulses of the encoder 10 which is obtained the voltage 18 reaches its maximum level set by an amplifier 11 through a control circuit 16 and the number of pulses generated by the encoder 10 until the head 8 moves up to the level 19. Then the head 8 is fixed at its optimum position.
摘要翻译：目的：为了在短时间内将头部移动到最佳位置，通过高速发送头，直到获得再现信号，然后降低发送速度，使再生信号的包络线波形检测，并且检测在最大水平位置处停止头部的最大水平。构成：当磁头8在磁片9上朝向信号记录部17b移动时。在这种情况下，头8经由电动机控制电路2高速移位，再生电压18达到固定电平19.头8的位置信息以该时刻的形式被计算旋转编码器10的输出脉冲数，然后存储在存储器15中。然后，马达4以低速重复地旋转并停止，直到编码器10的输出脉冲的数量达到固定的水平，并从然后，头8被发送回等效于编码器10的输出脉冲数之和的位置，该输出脉冲的数量通过控制电路16获得的电压达到放大器11设定的最大电平，数字直到头8移动到等级19为止，由编码器10产生的脉冲。然后头部8固定在其最佳位置。

88. 发明专利

JPS58194176A Positioning system of magnetic head 失效
标题翻译：磁头定位系统
公开(公告)号：JPS58194176A
公开(公告)日：1983-11-12
申请号：JP7472082
申请日：1982-05-04
申请人： Comput Basic Mach Technol Res Assoc
发明人： SASAKI HAJIME , SATOU TADASHI
IPC分类号： G05D3/12 , G11B5/55 , G11B21/08
CPC分类号： G11B5/5526
摘要： PURPOSE:To position a magnetic head at the center of a data track by the response to the position shift of the data track produced by a difference of ambient temperatures of a magnetic disc device. CONSTITUTION:A readout signal 14 obtained from the magnetic head when the magnetic head 5 passes through data tracks T1-T5, is inputted to an LPF 18 and a change in the amplitude of a readout voltage 16 produced when the magnetic head passes through the data tracks is extracted and an amplitude signal (a) is formed. This amplitude signal (a) is compared with comparison voltages VA, VB of two voltage comparators A19, B20 respectively and output pulses (b) and (c) are formed. The output pulses (b) and (c) are inputted to an FF 21, a gate signal (d) is formed and gated at a track pulse generating circuit 22 to generate a track pulse (e). The track pulse (e) is inputted to a counter 23, where the number of counts is updated with a falling edge ef, to output a present track address 24 of the data track on which the magnetic head 5 passes. When an objective track address 26 and the present track address 24 are coincident, a track moving signal (f) is stopped and then a motor drive pulse 12 and a motor drive current 13 are stopped accordingly. Thus, the rotation of a step motor 7 is stopped and the magnetic head 5 is positioned at the center of the objective data track.
摘要翻译：目的：通过对由磁盘装置的环境温度差异产生的数据轨道的位置偏移的响应，将磁头定位在数据轨道的中心。构成：当磁头5通过数据轨道T1-T5时从磁头获得的读出信号14被输入到LPF 18，并且当磁头通过数据时产生的读出电压16的振幅的变化提取轨迹并形成幅度信号（a）。将该振幅信号（a）分别与两个电压比较器A19，B20的比较电压VA，VB进行比较，形成输出脉冲（b）和（c）。输出脉冲（b）和（c）被输入到FF21中，在轨道脉冲发生电路22上形成门控信号（g），并产生轨迹脉冲（e）。磁道脉冲（e）被输入到计数器23，计数器的数量用下降沿ef更新，以输出磁头5通过的数据磁道的当前磁道地址24。当目标轨道地址26和当前轨道地址24一致时，轨道移动信号（f）停止，然后马达驱动脉冲12和马达驱动电流13相应地停止。因此，步进马达7的旋转停止，磁头5位于物镜数据轨道的中心。

89. 发明专利

JPS5723340B2 JPS5723340B2 - 失效
公开(公告)号：JPS5723340B2
公开(公告)日：1982-05-18
申请号：JP4521175
申请日：1975-04-16
IPC分类号： G11B27/10 , G06F3/06 , G11B5/55 , G11B21/08
CPC分类号： G11B5/5526

90. 发明专利

JP2018156716A 磁気ディスク装置、コントローラ及び方法审中-公开
公开(公告)号：JP2018156716A
公开(公告)日：2018-10-04
申请号：JP2017054867
申请日：2017-03-21
申请人：株式会社東芝 , 東芝デバイス&ストレージ株式会社
发明人：松尾隆 , 吉田賢治
IPC分类号： G11B20/10
CPC分类号： G11B5/553 , G11B5/187 , G11B5/5526 , G11B21/083 , G11B2005/001 , G11C11/34
摘要：【課題】複数トラックを連続して好適にアクセスすることができる磁気ディスク装置を提供すること。【解決手段】実施形態によれば、磁気ディスク装置は、複数のトラックを含む磁気ディスクと、磁気ディスクからデータを読み出すための磁気ヘッドと、コントローラとを具備する。コントローラは、複数のトラックのうち第1トラック及び第2トラックからのデータを読み出す場合に、磁気ヘッドから出力された第1トラックの信号の復号が完了する前に、第2トラックへの磁気ヘッドの移動を開始する。【選択図】図3

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