公开(公告)号：US06198585B1

公开(公告)日：2001-03-06

申请号：US09186282

申请日：1998-11-05

Applicant: Seiji Higurashi ,  Yoichi Zenno ,  Takeo Ohishi

Inventor： Seiji Higurashi ,  Yoichi Zenno ,  Takeo Ohishi

IPC: G11B509

CPC classification number: G11B20/10055 ,  G11B5/0086 ,  G11B20/10009 ,  G11B20/1403

Abstract: A digital signal recording apparatus includes an amble generator for generating an amble signal representing a bit-sequence amble pattern. The bit-sequence amble patter can be detected and reproduced by a partial-response detection system “PR(1, 0, −1)” as a detected amble pattern having a period of state inversions which is shorter than a period of state inversions in a detected amble pattern corresponding to a recorded amble pattern of alternation of “1” and “0”. The amble signal generated by the amble generator and a first digital information signal are combined into a second digital information signal on a time sharing basis. The second digital information signal is recorded on a magnetic recording medium. For example, the bit-sequence amble pattern represented by the amble signal has repetition of six bits of “111000”.

Abstract translation: 一种数字信号记录装置，包括一个产生代表比特序列无序模式的信号的信号的交流发生器。 可以通过部分响应检测系统“PR（1，0，-1）”来检测和再现比特序列逗号模式，作为具有比状态反转周期短的状态反转周期的检测到的失真码型， 对应于记录的交替“1”和“0”的交替模式的检测到的交叉图案。 由交流发生器产生的交流信号和第一数字信息信号在时间共享的基础上组合成第二数字信息信号。 第二数字信息信号被记录在磁记录介质上。 例如，由码元信号表示的比特序列导码模式具有六比特“111000”的重复。

公开(公告)号：US6122432A

公开(公告)日：2000-09-19

申请号：US25750

申请日：1998-02-18

Applicant: Seiji Higurashi ,  Yoichi Zenno

Inventor： Seiji Higurashi ,  Yoichi Zenno

IPC: G11B5/09 ,  G11B5/008 ,  G11B15/04 ,  G11B15/12 ,  G11B15/18 ,  G11B15/467 ,  G11B27/032 ,  H04N5/91

CPC classification number: G11B15/125 ,  G11B15/04 ,  G11B27/032 ,  G11B5/0086 ,  G11B15/1875 ,  G11B15/4673

Abstract: The present invention provides an information recording apparatus having a rotary drum, plural rotary heads provided on the rotary drum. Each of the plural rotary heads has a rotary transformer to record a recording signal which is obtained by processing a digital information signal to be recorded with a predetermined treatment, on a magnetic tape to form a predetermined track pattern by supplying the recording signal to the plural rotary heads through the rotary transformers. The apparatus further has a signal generating device for generating a signal having an intermediate voltage of an amplitude of the recording signal to be supplied to the rotary heads. When an intermittent recording is performed with the plural rotary heads by running the magnetic tape more slowly than a normal recording to form such a normal track pattern as formed in the normal recording, the signal having the intermediate value of the amplitude of the recording signal to be supplied is applied to the plural rotary heads which perform an overlapping run on tracks already recorded by the signal generating device.

Abstract translation: 本发明提供了一种具有旋转鼓的信息记录装置，设置在旋转滚筒上的多个旋转头。 多个旋转磁头中的每一个具有旋转变压器，用于将通过以预定处理记录的数字信息信号处理获得的记录信号记录在磁带上，以通过向多个旋转变压器提供记录信号来形成预定的轨道图案 旋转头通过旋转变压器。 该装置还具有一个信号产生装置，用于产生具有要提供给旋转磁头的记录信号幅度的中间电压的信号。 当通过使磁带比正常记录更慢地运行磁带来进行间歇记录以形成正常记录中形成的正常轨道图案时，具有记录信号的幅度的中间值的信号至 被施加到在由信号发生装置已经记录的轨道上执行重叠行驶的多个旋转磁头。

公开(公告)号：US06504991B1

公开(公告)日：2003-01-07

申请号：US09321606

申请日：1999-05-28

Applicant: Seiji Higurashi ,  Yoichi Zenno

Inventor： Seiji Higurashi ,  Yoichi Zenno

IPC: H06N591

CPC classification number: G11B27/324 ,  G11B15/087 ,  G11B15/125 ,  G11B15/14 ,  G11B15/1875 ,  G11B15/4673 ,  G11B15/52 ,  G11B2220/90 ,  G11B2220/91

Abstract: First and second magnetic heads provided on a rotary drum alternately scan a magnetic tape. The first and second magnetic heads are different from each other in azimuth angle. A digital information signal is fed to the first magnetic head and is recorded on the magnetic tape via the first magnetic head while the first magnetic head is scanning the magnetic tape in a long time recording mode of operation where the magnetic tape is driven at a speed equal to a predetermined standard speed multiplied by 1/N. Here, N denotes a predetermined integer equal to or greater than 2. The digital information signal is fed to the second magnetic head and is recorded on the magnetic tape via the second magnetic head while the second magnetic head is scanning the magnetic tape in the long time recording mode of operation. In the long time recording mode of operation, the feed of the digital information signal to the first magnetic head and the second magnetic head is inhibited during an (N−1)/2 turn of the rotary drum after either the feed of the digital information signal to the first magnetic head or the feed of the digital information signal to the second magnetic head. A control pulse signal is recorded on the magnetic tape via a third magnetic head which is fixed. The control pulse signal has a period corresponding to one turn of the rotary drum. The control pulse signal has a duty cycle depending on timings at which the first and second magnetic heads record the digital information signal on the magnetic tape.

Abstract translation: 设置在旋转鼓上的第一和第二磁头交替地扫描磁带。 第一和第二磁头在方位角上彼此不同。 数字信息信号被馈送到第一磁头，并且通过第一磁头被记录在磁带上，而第一磁头在长时间记录操作模式下扫描磁带，其中磁带以速度驱动 等于预定的标准速度乘以1 / N。 这里，N表示等于或大于2的预定整数。数字信息信号被馈送到第二磁头，并通过第二磁头记录在磁带上，而第二磁头在长时间扫描磁带 时间记录操作模式。 在长时间记录操作模式下，在数字信息的馈送之后，在旋转磁鼓的（N-1）/ 2圈期间，数字信息信号到第一磁头和第二磁头的传送被禁止 信号到第一磁头或将数字信息信号馈送到第二磁头。 控制脉冲信号通过固定的第三磁头记录在磁带上。 控制脉冲信号具有对应于旋转磁鼓的一圈的周期。 控制脉冲信号具有取决于第一和第二磁头在磁带上记录数字信息信号的定时的占空比。

公开(公告)号：US06288857B1

公开(公告)日：2001-09-11

申请号：US09761750

申请日：2001-01-18

Applicant: Seiji Higurashi ,  Yoichi Zenno ,  Takeo Ohishi

Inventor： Seiji Higurashi ,  Yoichi Zenno ,  Takeo Ohishi

IPC: G11B509

Abstract: A digital signal recording apparatus includes an amble generator for generating an amble signal representing a bit-sequence amble pattern. The bit-sequence amble patter can be detected and reproduced by a partial-response detection system “PR(1, 0, −1)” as a detected amble pattern having a period of state inversions which is shorter than a period of state inversions in a detected amble pattern corresponding to a recorded amble pattern of alternation of “1” and “0”. The amble signal generated by the amble generator and a first digital information signal are combined into a second digital information signal on a time sharing basis. The second digital information signal is recorded on a magnetic recording medium. For example, the bit-sequence amble pattern represented by the amble signal has repetition of six bits of “111000”.

公开(公告)号：US06191900B1

公开(公告)日：2001-02-20

申请号：US09060144

申请日：1998-04-15

Applicant: Seiji Higurashi ,  Yoichi Zenno

Inventor： Seiji Higurashi ,  Yoichi Zenno

IPC: G11B502

CPC classification number: G11B19/28 ,  G11B15/087 ,  G11B15/125 ,  G11B15/4671 ,  G11B15/52 ,  G11B19/12

Abstract: A digital signal recording and reproducing apparatus includes a plurality of heads. A digital signal containing an information signal is recorded on a recording medium via heads among the heads while tracks are sequentially formed on the recording medium. The digital signal is reproduced from the recording medium via heads among the heads. A reproduced signal processing circuit operates for processing the reproduced digital signal at a changeable data processing rate to recover the information signal from the reproduced digital signal. During the recording, a speed of the heads, a speed of the recording medium, a data rate of the recording, and a number of used heads are set to changeable values respectively. The digital signal and a mode signal representative of the set values are recorded on the tracks at approximately a predetermined constant recording wavelength. At a start of playback, the speed of the heads, the speed of the recording medium, the data processing rate, and the number of used heads are set to predetermined initial values respectively. The mode signal is recovered from the reproduced digital signal. After the start of playback, the speed of the heads, the speed of the recording medium, and the number of used heads are substantially equalized to the respective corresponding values represented by the recovered mode signal. After the start of playback, the data processing rate is controlled at a value substantially corresponding to the value of the data rate of the recording which is represented by the recovered mode signal.

Abstract translation: 数字信号记录和再现装置包括多个头。 包含信息信号的数字信号通过磁头之间的磁头被记录在记录介质上，而磁道依次形成在记录介质上。 数字信号通过磁头中的磁头从记录介质再现。 再现信号处理电路用于以可变数据处理速率处理再现的数字信号，以从再现的数字信号中恢复信息信号。 在记录过程中，磁头的速度，记录介质的速度，记录的数据速率和使用的磁头的数量分别被设置为可变的值。 代表设定值的数字信号和模式信号以大约预定的恒定记录波长记录在轨道上。 在回放开始时，磁头的速度，记录介质的速度，数据处理速率和使用磁头的数量分别被设置为预定的初始值。 从再现的数字信号中恢复模式信号。 在重放开始之后，磁头的速度，记录介质的速度和使用磁头的数量基本上与由恢复的模式信号表示的相应的对应值相等。 在重放开始之后，数据处理速率被控制在大致对应于由恢复的模式信号表示的记录的数据速率的值的值。

公开(公告)号：US6084737A

公开(公告)日：2000-07-04

申请号：US966254

申请日：1997-11-07

Applicant: Seiji Higurashi ,  Yoichi Zenno

Inventor： Seiji Higurashi ,  Yoichi Zenno

IPC: H04N5/783 ,  G11B5/09 ,  G11B15/467 ,  G11B15/473 ,  G11B15/46

CPC classification number: G11B15/4671

Abstract: A magnetic playback system wherein, during high-speed playback, the speed of rotation of a drum motor is controlled so that the data rate of the playback signal from that one of two rotary heads for which the scanned area on the magnetic tape from which a playback signal can be obtained is larger, will be equal to the data rate of the recorded digital data signal. This drum motor speed control is effected by a speed control servo loop that includes a frequency detector which controls the speed control servo loop based on a speed detection signal and a speed information voltage generated by a speed information voltage generator. The speed information voltage generator generates this speed information voltage based on a control signal played back from the tape by a control head and a tape direction signal.

Abstract translation: 一种磁回放系统，其中在高速重放期间，控制鼓马达的旋转速度，使得来自两个旋转头中的一个的重放信号的数据速率，其中磁带上的扫描区域 播放信号可以获得较大，将等于记录的数字数据信号的数据速率。 该鼓式电动机速度控制由速度控制伺服回路实现，该速度控制伺服回路包括基于速度检测信号和由速度信息电压发生器产生的速度信息电压来控制速度控制伺服回路的频率检测器。 速度信息电压发生器基于通过控制头和磁带方向信号从磁带重放的控制信号产生该速度信息电压。

公开(公告)号：US6052246A

公开(公告)日：2000-04-18

申请号：US882284

申请日：1997-06-25

Applicant: Seiji Higurashi ,  Yoichi Zenno

Inventor： Seiji Higurashi ,  Yoichi Zenno

IPC: G11B20/12 ,  G11B27/30 ,  H04N5/92 ,  G11B5/09 ,  H04N5/91 ,  H04N5/926 ,  H04N9/79

CPC classification number: G11B27/3063 ,  G11B20/12 ,  G11B27/3027 ,  G11B27/3036 ,  H04N5/9201 ,  G11B2020/10592 ,  G11B2220/20 ,  G11B2220/90

Abstract: Additional information of multi-programs can be recorded using a source pack which indicates channel numbers and the like in multi-channel or single-channel recording. An additional flag AF in this pack indicates whether the pack is auxiliary information which is constructed with a plurality of pack groups or auxiliary information which is constructed with a single pack. If AF is 0 and the total pack number (T.P. No.) is 0, the pack is a source pack of a single channel. If AF is 0 and T.P. No. is n (.noteq.0), the T.P. No. is defined to indicate the source pack number. Also, if AF is 1 and T.P. No. is 0, the pack is the last pack; if AF is 1 and T.P. No. is n (.noteq.0), the T.P. No. indicates the total number of packs appended to the pack.

Abstract translation: 可以使用在多声道或单声道录制中指示频道号等的源码包来记录多节目的附加信息。 该包中的附加标志AF表示该包是否是由多个包组构成的辅助信息或由单个包构成的辅助信息。 如果AF为0，总包编号（T.P.No。）为0，则该包是单个通道的源包。 如果AF为0和T.P. No.是n（NOTEQUAL 0），T.P. 否定义为指示源包号。 此外，如果AF为1和T.P. 编号是0，包是最后一个包; 如果AF为1和T.P. No.是n（NOTEQUAL 0），T.P. No.表示附加到包中的包的总数。