公开(公告)号：EP0935239A3

公开(公告)日：2001-09-26

申请号：EP99200765.8

申请日：1993-10-19

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： Mimura, Yoshiaki, Mitsubishi Denki K.K.

IPC分类号： G11B5/008 ,  G11B5/035 ,  G11B5/02 ,  G11B15/02 ,  H04N5/931 ,  H04N17/06 ,  G11B27/36

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 (f1,f2) of different frequencies are recorded on a magnetic recording medium (9) while gradually increasing or decreasing recording current (7), and the variation of the level of each of the replayed test signals (f1,f2) 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 (4) 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 (1), 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 (1) applies, the frequency characteristic of the recording equalizer (4), and the gain of a recording amplifier (7) 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。