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    • 81. 发明申请
    • RECORDING AND REPRODUCING DEVICE FOR MULTIPLE-SPEED REPRODUCTION
    • 记录和复制装置以实现多速复制
    • WO0000973A3
    • 2000-04-27
    • PCT/IB9901186
    • 1999-06-24
    • KONINKL PHILIPS ELECTRONICS NVPHILIPS SVENSKA AB
    • VAN HUSEN GUENTHER
    • G11B5/008G11B15/12G11B15/18G11B15/467G11B20/12G11B27/00G11B27/30H04N5/7826H04N5/783H04N5/92H04N9/804H04N9/82
    • H04N5/783G11B5/0086G11B15/125G11B15/1875G11B15/4673G11B20/1208G11B27/005G11B27/3063G11B2220/90H04N5/78263H04N9/8042H04N9/8227
    • A recording and reproducing device (1) comprises recording means (4) which include at least two magnetic heads (A, B), mounted on a rotatably supported head disc (14) and having Z different azimuth angles, for the recording of recording data (AD) in helical recording tracks (S) on a magnetic tape (12), a part of the recording data (AD) being recordable as information data (ID) in an information data recording area (SC) of each helical recording track (S), which recording area is always the same as regards its position in a helical recording track (S), and comprises reproducing means (5) for reproducing at a maximum N-fold reproducing speed information data (ID) recorded on a magnetic tape (12), each of the at least two magnetic heads (A, B) being capable of scanning a helical reproducing track (W) which traverses N helical recording tracks (S), which device now further comprises partitioning means (35) for partitioning additional data (ZU) into K=(N*Z)-1 partitions of information data (ID) which can each be recorded in an information data recording area (SC), the recording means (4) being adapted to at least K times record the K partitions of information data (ID), which can each be recorded in an information data recording area (SC) of a helical recording track (S), in total in at least K * K information data recording areas (SC) of at least K * K helical recording tracks (S).
    • 一种记录和再现设备(1)包括记录装置(4),该记录装置包括安装在可旋转支撑的磁头盘(14)上并具有Z个不同方位角的至少两个磁头(A,B),用于记录记录数据 (AD)记录在磁带(12)上的螺旋记录道(S)中,记录数据(AD)的一部分可作为信息数据(ID)记录在每个螺旋记录道(SC)的信息数据记录区 S),该记录区域在螺旋记录磁道(S)中的位置总是相同的,并且包括用于以记录在磁带上的最大N倍重放速度信息数据(ID)重放的重放装置(5) (12)中,至少两个磁头(A,B)中的每一个能够扫描穿过N个螺旋记录磁道(S)的螺旋再生磁道(W),该设备现在还包括分区装置(35) 附加数据(ZU)分解成K =(N * Z)-1个信息数据分区 (ID),每个记录装置可以记录在信息数据记录区(SC)中,记录装置(4)适于至少K次记录信息数据(ID)的K个分区,每个K分区可以记录在信息 至少K * K个螺旋记录轨道(S)的K * K个信息数据记录区域(SC)中,总共有一个螺旋记录轨道(S)的数据记录区域(SC)。
    • 85. 发明申请
    • INTERMITTENT SLOW CONTROLLER
    • INTERMITTENT慢速控制器
    • WO1997028531A1
    • 1997-08-07
    • PCT/JP1997000222
    • 1997-01-29
    • SANYO ELECTRIC CO., LTD.HIROSE, Yoshiki
    • SANYO ELECTRIC CO., LTD.
    • G11B15/467
    • H04N5/783G11B15/026G11B15/125G11B15/1875G11B15/4671G11B15/4731
    • At the time of intermittent slow start, an increase in velocity between a magnetic tape and a magnetic head causes a horizontal distortion in the reproduced image. To prevent this, the rotational speed of a drum motor (11) must be increased. Hence, a microcomputer (19) forms a control output PWM by adding a predetermined value to a value for instructing an ordinary rotational speed, to effect correction at the time of start. Even when a dynamic point of the drum motor (11) is deviated, therefore, the speed is corrected to remain constant at all times by changing the data PWM at an ordinary rotational speed. Even when the brake is applied to the capstan motor (10), a change in relative velocity between the magnetic tape and the magnetic head causes a horizontal distortion in the reproduced image. Therefore, the distortion is corrected by subtracting a predetermined value from the drum control data PWM at the ordinary rotational speed.
    • 在间歇性慢启动时,磁带和磁头之间的速度增加导致再现图像中的水平失真。 为了防止这种情况,必须增大鼓马达(11)的旋转速度。 因此,微型计算机(19)通过将预定值与用于指示普通转速的值相加来形成控制输出PWM,从而在启动时进行校正。 因此,即使当鼓马达(11)的动态点偏离时,通过以普通转速改变数据PWM,一直保持恒定的速度。 即使当制动器被施加到主导轴马达(10)时,磁带和磁头之间的相对速度的变化导致再现图像中的水平失真。 因此,通过从正常旋转速度的滚筒控制数据PWM减去预定值来校正失真。
    • 87. 发明申请
    • MAGNETIC RECORDING/REPRODUCING DEVICE HAVING HIGH-SPEED REPRODUCTION MODE
    • 具有高速再现模式的磁记录/再现设备
    • WO1996010822A1
    • 1996-04-11
    • PCT/JP1995001991
    • 1995-09-29
    • HITACHI, LTD.SUGIMURA, NaozumiNAKAGAKI, HarushigeOHARA, YasunoriAMADA, NobutakaARAI, TakaoSANO, Masato
    • HITACHI, LTD.
    • G11B15/467
    • G11B27/005G11B5/0086G11B15/1875G11B15/4675G11B27/324G11B2220/90G11B2220/91
    • A magnetic recording/reproducing device provided with a recording device which records signals on a magnetic tape with a rotary head and a reproducing device having a standard reproduction mode in which signals are reproduced at a standard tape speed and a high-speed reproducing mode in which signals are reproduced at a prescribed tape speed faster than the standard tape speed. A recording signal processing section processes digital signals to be recorded so that the data of the digital signals to be reproduced in the high-speed reproducing mode may be dispersedly recorded at prescribed positions on a plurality of prescribed tracks. In the high-speed reproducing mode, the data to be reproduced at the high-speed are recorded so that the data can be arranged along the scanning locus of the rotary head on the magnetic tape. A mark adding section generates marks corresponding to the positions of the tracks on which the data of digital signals to be reproduced in the high-speed reproducing mode are recorded and adds the marks to control signals. A control head records the control signals to which are added the marks corresponding to the positions of the tracks on a magnetic tape when the recording device records signals or reproduces the control signals to which the marks are added when the reproducing device reproduces the signals. A mark detecting section detects the marks from the reproduced control signals. A phase comparing section detects the phase differences between the marks and a reference signal synchronizing with the rotation of the rotary head. A capstan servo section controls the speed of the magnetic tape so that the phase difference may be a prescribed reference value.
    • 一种具有记录装置的磁记录/再现装置,该记录装置用具有旋转头的磁带和具有标准再现模式的再现装置记录信号,其中以标准磁带速度和高速再现模式再现信号,其中 以比标准磁带速度更快的规定磁带速度再现信号。 记录信号处理部分处理待记录的数字信号,使得以高速再现模式再现的数字信号的数据可以分散地记录在多个规定的轨道上的规定位置。 在高速再现模式中,以高速再现的数据被记录,使得可以沿着磁带上的旋转磁头的扫描轨迹布置数据。 标记添加部分生成与高速再现模式下要再现的数字信号的数据的轨迹的位置对应的标记,并将该标记加到控制信号上。 当记录装置记录信号或再现当再现装置再现信号时添加标记的控制信号时,控制头记录与磁道位置相对应的标记相加的控制信号。 标记检测部分根据再现的控制信号检测标记。 相位比较部分检测与旋转头的旋转同步的标记与参考信号之间的相位差。 主导轴伺服部分控制磁带的速度,使得相位差可以是规定的参考值。