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公开(公告)号：EP0390554B1
公开(公告)日：1994-10-26
申请号：EP90303354.6
申请日：1990-03-29
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公开(公告)号：EP0286842B1
公开(公告)日：1994-08-17
申请号：EP88103926.7
申请日：1988-03-11
发明人： Naito, Saishi , Hayashi, Masaaki
CPC分类号： G06K7/087
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83.发明公开Recording signal control apparatus capable of optimizing recording conditions for magnetic recording medium 失效记录适合于优化记录条件的磁记录介质的信号的控制装置。
公开(公告)号：EP0594407A2
公开(公告)日：1994-04-27
申请号：EP93308325.5
申请日：1993-10-19
CPC分类号： G11B15/07 , G11B5/00813 , G11B5/0086 , G11B5/02 , G11B5/035 , G11B15/02 , G11B15/06 , G11B15/087 , G11B23/08714 , H04N5/782 , H04N5/923 , H04N5/931 , H04N17/06
摘要： A plurality of test signals of different frequencies are recorded on a magnetic recording medium while gradually increasing or decreasing recording current, and the variation of the level of each of the replayed test signals and the variation of the recording current are stored in a memory. From these variations, the amount of detail emphasis and/or the frequency characteristic of a recording equalizer and/or the recording current value for optimum recording of video signals are calculated and stored in another memory, and based on the thus stored optimum data for the magnetic recording medium displayed on display means, a detail emphasis circuit, a recording equalizer frequency correction circuit, and a recording current value setting circuit are controlled singly or in any combination thereof, thereby controlling one or other or any combination of three factors, i.e. the amount of detail emphasis that the detail emphasis circuit applies, the frequency characteristic of the recording equalizer, and the gain of a recording amplifier for FM signal recording.
摘要翻译： 不同频率的测试信号的多个被记录在磁记录介质上，同时逐渐递增或递减的记录电流，并且每个重放测试信号和记录电流的变化的电平的变化被存储在存储器中。 从合成的变化，细节强调的量和/或记录均衡器和/或视频信号的最佳记录的记录电流值的频率特性被计算并存储在另一存储器中，并且基于用于所述这样存储最佳数据 显示在显示器装置，细节强调电路，记录均衡器频率校正电路，和一个记录电流值设定电路的磁记录介质可以单独使用或以任何组合来控制它们，从而控制一个或另一个或三个因素的任意组合，即 细节强调的量做的细节强调电路适用，记录均衡器的频率特性，以及用于FM信号记录的记录放大器的增益。
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公开(公告)号：EP0314360B1
公开(公告)日：1993-12-29
申请号：EP88309715.6
申请日：1988-10-17
CPC分类号： G11B20/10046 , G11B5/035 , G11B20/10009
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公开(公告)号：EP0310356B1
公开(公告)日：1993-02-24
申请号：EP88308995.5
申请日：1988-09-28
申请人： SONY CORPORATION
CPC分类号： G11B5/035 , G11B5/00878 , G11B5/09 , G11B20/10
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公开(公告)号：EP0240286B1
公开(公告)日：1992-12-09
申请号：EP87302735.3
申请日：1987-03-30
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87.发明公开
公开(公告)号：EP0507196A2
公开(公告)日：1992-10-07
申请号：EP92105065.4
申请日：1992-03-24
CPC分类号： G11B20/10194 , G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B27/36
摘要： A write equalization circuit that including a data encoder for producing a binary data signal wherein a 1 is represented by a transition at the start of a bit interval and a 0 is represented by no transition at the start of a bit interval, an equalization timing generator for generating a start signal indicative of the initial edges of equalization pulses for predetermined 0's in the binary data signal, and a multiple stage delay circuit having logic gates implemented in an integrated circuit and responsive to the start signal and a control word for providing equalization pulses of a substantially constant width, wherein the number of stages employed for delay is determined by the control word. Logic circuitry implemented in the same integrated circuit as the multiple stage delay circuit detects changes in the propagation delay characteristics of the logic gates of the multiple stage delay circuit, and a processor responsive to the logic circuitry adjusts the control word so as to maintain the width of the equalization pulses substantially constant. Also disclosed is a method for adjusting write equalization pulses in a tape drive to achieve a desired suppression in the read signal.
摘要翻译： 一个写均衡电路，包括用于产生二进制数据信号的数据编码器，其中a由位间隔开始时的转变表示，0表示在位间隔开始时没有转换，均衡定时发生器 用于产生表示二进制数据信号中的预定0的均衡脉冲的初始边沿的起始信号，以及具有在集成电路中实现的逻辑门并响应于起始信号的多级延迟电路和用于提供均衡脉冲的控制字 基本上恒定的宽度，其中用于延迟的级的数量由控制字确定。 在与多级延迟电路相同的集成电路中实现的逻辑电路检测多级延迟电路的逻辑门的传播延迟特性的变化，并且响应逻辑电路的处理器调整控制字以便保持宽度 的均衡脉冲基本上恒定。 还公开了一种用于调整磁带驱动器中的写均衡脉冲以在读信号中实现所需抑制的方法。
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公开(公告)号：EP0486322A3
公开(公告)日：1992-09-02
申请号：EP91310571.4
申请日：1991-11-15
CPC分类号： H04N5/78213 , G11B20/06 , H04N9/802
摘要： An automatic filter adjusting apparatus for adjusting an adjustable filter (34) having an input and an output. The apparatus includes a reference signal provider (32) for providing an FM signal to the filter (34), an adjusting signal generator (45, 44, 35) for providing an adjusting signal to the filter (34), a comparator (40) for comparing the output of the filter (34) to a reference level and a controller (41, 42, 43) responsive to the comparator (40) for controlling the adjusting signal generator (45, 44, 35).
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89.发明公开
公开(公告)号：EP0488811A2
公开(公告)日：1992-06-03
申请号：EP91311154.8
申请日：1991-11-29
申请人： SONY CORPORATION
发明人： Yoshida, Teruyuki, c/o Patents Division , Arai, Hideki, c/o Patents Division , Kanetsuka, Keiko, c/o Patents Division
CPC分类号： G11B5/035 , G11B5/0086 , G11B5/09 , G11B5/53 , G11B33/122 , H03G5/10
摘要： In a magnetic recording and reproducing apparatus, a reproduced output (V2) obtained from a magnetic tape (3) by means of a rotary head (2) mounted within a drum is current-amplified (6), and a low frequency component thereof is suppressed (11). The reproduced output is thereafter voltage-amplified (12A) and then transmitted outside of the drum via a rotary transformer (12B). The suppression of the low frequency component is compensated by de-emphasis means (12C) arranged outside of the drum. A number of equalising circuits (15A to 15F) may receive an output of the de-emphasis means (12C), the equalising circuits being so arranged as to equalise a higher frequency component of the output in an order of frequencies of the equalising circuits that increases in accordance with the proximity of the equalising circuits to a terminating resistance (R10).
摘要翻译： 在磁记录和再现装置中，通过安装在滚筒内的旋转头（2）从磁带（3）获得的再现输出（V2）被电流放大（6），其低频分量为 被压制（11）。 然后再生输出电压放大（12A），然后通过旋转变压器（12B）传输到滚筒外部。 低频分量的抑制由布置在滚筒外侧的去加重装置（12C）补偿。 多个均衡电路（15A至15F）可以接收去加重装置（12C）的输出，均衡电路被布置为使均衡电路的频率的顺序对输出的较高频率分量进行均衡， 根据均衡电路与终端电阻（R10）的接近度而增加。
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公开(公告)号：EP0486322A2
公开(公告)日：1992-05-20
申请号：EP91310571.4
申请日：1991-11-15
CPC分类号： H04N5/78213 , G11B20/06 , H04N9/802
摘要： An automatic filter adjusting apparatus for adjusting an adjustable filter (34) having an input and an output. The apparatus includes a reference signal provider (32) for providing an FM signal to the filter (34), an adjusting signal generator (45, 44, 35) for providing an adjusting signal to the filter (34), a comparator (40) for comparing the output of the filter (34) to a reference level and a controller (41, 42, 43) responsive to the comparator (40) for controlling the adjusting signal generator (45, 44, 35).
摘要翻译： 一种用于调节具有输入和输出的可调节过滤器（34）的自动过滤器调节装置。 该装置包括用于向滤波器（34）提供FM信号的参考信号提供器（32），用于向滤波器（34）提供调整信号的调整信号发生器（45,44,35），比较器（40） 用于将滤波器（34）的输出与参考电平进行比较，以及响应于比较器（40）控制调节信号发生器（45,44,35）的控制器（41,42,43）。
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