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31. 发明公开

EP0174789A2 Methods of and apparatus for reproducing signals 失效
标题翻译：用于信号再现方法和装置。
公开(公告)号：EP0174789A2
公开(公告)日：1986-03-19
申请号：EP85306227.1
申请日：1985-09-02
申请人： SONY CORPORATION
发明人： Sugiki, Hiraku c/o Patents Division , Yamada, Makoto c/o Patents Division , Miyamori, Shinji c/o Patents Division
IPC分类号： G11B5/588
CPC分类号： G11B15/4677 , G11B21/103
摘要： In an apparatus for reproducing signals in a plurality of oblique tracks (5A,5B) on a recording medium (2) by a rotary head (1A,1B), the signals in the tracks (5A,5B) contain a digital information signal in a first predetermined area on the oblique tracks (5A,5B) and a tracking control signal including a tracking pilot signal (P) and an erase signal (E) in a second predetermined area. When the recorded tracks (5A,5B) are reproduced by a rotary playback head (1A,1B) having a tracing width greater than the track width, the pilot signals (P) from the adjacent tracks (5A,5B) will be detected and compared in level. A tracking signal for controlling the tracking alignment of the rotary playback head (1A,1B) is generated in response to the level comparison, and is adjusted in level response to the level of the tracking control signal.

32. 发明公开

EP0172441A1 Tracking control system for a video tape recorder 失效
标题翻译：跟踪控制系统的磁带录像机。
公开(公告)号：EP0172441A1
公开(公告)日：1986-02-26
申请号：EP85109342.7
申请日：1985-07-25
申请人： HITACHI, LTD.
发明人： Tejima, Tsunehiko
IPC分类号： H04N5/782 , G11B5/588
CPC分类号： G11B15/4676 , G11B21/103
摘要： In a system for controlling a tracking position of a rotary head for a VTR which has a rotary head including an audio (1) and video heads (13), the existence of an audio signal reproduced by the audio head (1) is detected and the tracking control is carried out on the basis of either the level of said audio FM signal when it exists or the level of a video FM signal reproduced by the video head (13) when the audio FM signal does not exist.

33. 发明公开

EP0150992A2 Methods of and apparatus for recording digital signals 失效
标题翻译：用于记录数字数据的方法和设备。
公开(公告)号：EP0150992A2
公开(公告)日：1985-08-07
申请号：EP85300470.3
申请日：1985-01-24
申请人： SONY CORPORATION
发明人： Sugiki, Hiraku c/o Sony Corporation , Odaka, Kentaro c/o Sony Corporation , Satake, Tomoji c/o Sony Corporation , Ohmori, Takashi c/o Sony Corporation , Yamada, Makoto c/o Sony Corporation
IPC分类号： G11B5/588 , G11B20/10 , G11B15/18
CPC分类号： G11B20/10527 , G11B15/4677 , G11B21/103
摘要： In a system for recording and reproducing digital signals on a magnetic tape (2) by using a rotary head (1A, 1B), in which signals are recorded as a series of oblique tracks (5A. 5B) without guard bands, a pilot signal (P) that controls tracking alignment of a playback head (1 A, 1B) is recorded at a particular position in a specific pilot signal record region, independent from the information signal record region. The pilot signal (P) is arranged at first predetermined positions separated from the ends of the oblique tracks (5A, 5B) in the pilot signal record region on every other one of the oblique tracks (5A. 5B) and at second predetermined positions separated from the ends of the oblique tracks (5A, 5B) in the pilot signal record region on the alternate ones of the oblique tracks (5A, 5B). An erase signal (E) can also be recorded in the pilot signal record region such that a start position of the erase signal (E) corresponds substantiallyto a centre portion of the pilot signal (P) on the adjacent oblique track (5A, 5B). When the recorded oblique tracks (5A. 5B) are reproduced by a rotary playback head (1A. 1B) having a tracking width greater than the track width, the pilot signal (P) from the adjacent oblique tracks (5A. 58) will be detected and compared in level, and the comparison output used to control the tracking alignment of the rotary playback head (1A. 1B).

34. 发明公开

EP0113986A1 Methods of and apparatus for recording a digital information signal 失效
标题翻译： Verfahren undGerätzur Aufzeichnung eines digitalen信息信号。
公开(公告)号：EP0113986A1
公开(公告)日：1984-07-25
申请号：EP83307691.2
申请日：1983-12-16
申请人： SONY CORPORATION
发明人： Odaka, Kentaro c/o Sony Corporation
IPC分类号： G11B5/52
CPC分类号： G11B5/0086 , G11B5/588 , G11B5/5921 , G11B15/4678 , G11B21/103
摘要： In a method of an apparatus for recording a digital information signal, an information signal to be recorded is pulse-code-modulated (PCM) and the PCM signal is recorded on a recording medium by a rotary head, as slanting tracks (T) with no guard bands between adjacent tracks, and then reproduced therefrom. A tracking pilot signal (P) is recorded on a part or parts (PT 1 , PT 2 , PT s ) of each track (T) independently of the PCM signal. The recording positions of the pilot signals (P) on respective tracks (T) are determined in such a manner that, as viewed from a direction perpendicular to the tracing direction (13) of the rotary head, the positions are not superimposed upon one another, that is they do not overlap one another. Upon reproducing, when a recorded track is traced by the rotary head, the pilot signals from both tracks adjacent to the track to be traced are reproduced and a tracking signal is generated from the reproduced outputs whereby a playback rotary head traces the record track.
摘要翻译：在用于记录数字信息信号的装置的方法中，要记录的信息信号是脉冲编码调制（PCM），并且PCM信号由旋转磁头记录在记录介质上，作为倾斜磁道（T）与相邻轨道之间没有保护带，然后从其再现。跟踪导频信号（P）独立于PCM信号被记录在每个磁道（T）的一部分（PT1，PT2，PT3）上。导频信号（P）在各个磁道（T）上的记录位置以如下方式确定：从垂直于旋转磁头的跟踪方向（13）的方向观察，位置彼此不叠加，那就是它们不重叠。在再现时，当通过旋转磁头跟踪所记录的轨道时，将再现与要跟踪的轨道相邻的两个轨道的导频信号，并且从再现的输出产生跟踪信号，由此重放旋转磁头跟踪记录磁道。

35. 发明公开

EP0089816A2 Apparatus for controlling the tracking position of a head in an apparatus for recording or reproducing information 失效
标题翻译：设备，用于控制在装置中用于记录或再现信息的磁头的寻迹位置。
公开(公告)号：EP0089816A2
公开(公告)日：1983-09-28
申请号：EP83301497.0
申请日：1983-03-17
申请人： SONY CORPORATION
发明人： Yasuda, Yukihiro , Yoshioka, Hiroshi , Takahashi, Takao
IPC分类号： G11B21/10 , G11B15/52 , G11B17/00
CPC分类号： G11B21/103 , G11B15/1808 , G11B17/34
摘要： In an apparatus for controlling a tracking position of magnetic head which reproduces parallel tracks sequentially formed on magnetic tape, the parallel tracks containing a video signal and a pilot signal having mutually different frequencies changing in cyclic sequence from track to track, a pair of control signals are generated in response to amplitudes of the reproduced pilot signals, said pair of control signals (S21 & S22) are generated in response to of the head from the track to be traced, and a tracking error signal (S17) is formed by mixture of the pair of control circuits to control the tracking position in response to said tracking error signal. The magnitudes of the pair of control signals (S21 & S22) are independently controlled according to the desired tracking position of the head so that the head can track at a location offset from a central track.

36. 发明公开

EP2880656A1 SYSTEM AND METHOD FOR OFF-TRACK WRITE PREVENTION AND DATA RECOVERY IN MULTIPLE HEAD OPTICAL TAPE DRIVES 无效
标题翻译：系统和方法预防SPURVERSETZTEM写入和数据恢复更HEADED光学磁带驱动器
公开(公告)号：EP2880656A1
公开(公告)日：2015-06-10
申请号：EP13750205.0
申请日：2013-08-01
申请人： Oracle International Corporation
发明人： MAHNAD, Faramarz
IPC分类号： G11B7/003 , G11B7/14 , G11B19/04
CPC分类号： G11B21/103 , G11B7/003 , G11B7/14
摘要： In an optical tape drive having optical heads for writing data in tracks on an optical tape, each track having an off-track threshold, a system and method are disclosed for off-track write prevention. The system includes multiple actuators, each actuator configured to control a position of an associated optical heads. The system also includes a controller configured to determine a position of each of the optical heads relative to an associated track on the optical tape and to prevent, in response to an event causing an optical heads to have a position outside the off-track threshold of the associated track, only that optical head from writing data to the optical tape and to buffer a stream of data for that optical head for later processing.

37. 发明公开

EP1482504A1 Method for tracking control 有权
标题翻译： Verfahren zur Spurverfolgungsregelung
公开(公告)号：EP1482504A1
公开(公告)日：2004-12-01
申请号：EP04016777.7
申请日：1999-09-27
申请人： DEUTSCHE THOMSON-BRANDT GMBH
发明人： Kaaden, Jürgen , Mahr, Peter
IPC分类号： G11B21/10 , G11B5/584 , G11B11/105 , G11B21/08
CPC分类号： G11B5/584 , G11B5/5508 , G11B7/0031 , G11B11/10547 , G11B11/10576 , G11B11/10578 , G11B21/086 , G11B21/103
摘要： The invention relates to a recording method which is matched according to a method for tracking control of a head unit with respect to data tracks on a data medium and in particular on a magnetic tape. On the magnetic tape, the data tracks are split into successive data sections (21) which, for their part, are each divided into an initial region (22) and a useful region (23). At least one control track (18a) extends over the entire length of the data section (21), in each data section. In addition to this, an additional control track (18b,18c) is provided in the initial region of each data section, and is likewise used for tracking control. The data for tracking control, which are obtained while the initial region is moving past a head unit, are also used in order to improve the tracking control while the useful region is moving past the head unit. Fast and good tracking control is achieved in this way.
摘要翻译：该方法涉及使用磁光感测系统[4,6,8]读取和写入多轨磁带[1]。使用由致动器[11]调节的导轨板[9]对准光束。控制输入由磁带上的三个控制轨道提供。对于具有多个并行数据轨道的磁带，包括独立权利要求。

38. 发明授权

EP0996127B1 Method for tracking control 有权
标题翻译：跟踪控制的方法
公开(公告)号：EP0996127B1
公开(公告)日：2004-08-04
申请号：EP99118991.1
申请日：1999-09-27
申请人： DEUTSCHE THOMSON-BRANDT GMBH
发明人： Kaaden, Jürgen , Mahr, Peter
IPC分类号： G11B21/10 , G11B11/10 , G11B5/584 , G11B11/105
CPC分类号： G11B5/584 , G11B5/5508 , G11B7/0031 , G11B11/10547 , G11B11/10576 , G11B11/10578 , G11B21/086 , G11B21/103

39. 发明公开

EP1054402A3 Adaptive servo gap detection for timing based servo 有权
标题翻译：伺服间隙的自适应检测zeitgebungsabhängigen伺服
公开(公告)号：EP1054402A3
公开(公告)日：2004-01-21
申请号：EP00303870.0
申请日：2000-05-09
申请人： International Business Machines Corporation
发明人： Bui, Nhan Xuan, c/o IBM United Kingdom Ltd. , Fukuda, Junichi, c/o IBM United Kingdom Ltd. , Jaquette, Glen Alan, c/o IBM United Kingdom Ltd. , Koski, John Alexander, c/o IBM United Kingdom Ltd. , Tsuruta, Kazuhiro, c/o IBM United Kingdom Ltd.
IPC分类号： G11B21/10 , G11B5/584
CPC分类号： G11B21/103 , G11B5/00878 , G11B5/584 , G11B27/13 , G11B2220/93
摘要： Disclosed are a method and a detector for adaptively detecting servo gaps in a timing based servo pattern (50) prerecorded on a variable velocity media. The timing based servo pattern has groups of repeated pairs of non-parallel transition stripes arranged in bursts (52,54,55), the bursts separated by servo gaps whose (70-75) length is variable. A servo system sensor (26) senses the transition stripes in the longitudinal direction of the media. A group interval detector coupled to the sensor detects the timing interval between the same slope transition stripes of two sequential groups of bursts (BX,BY). A divider (170) divides the detected group timing interval by a predetermined divisor to provide a divided timing interval gap detection threshold (181). A sequential stripe interval detector coupled to the sensor measures the timing interval between stripes, and a comparator (110) compares the divided timing interval and the timing interval, identifying a servo gap upon the measured timing interval at least equaling the gap threshold. The detector responds to "valid" signals (BXOK,BYOK) which indicate the validity of the detected group timing interval, repeating operation of the divider to update the gap threshold, and repeating operation of the comparator with the updated gap threshold to continue to identify the servo gaps.

40. 发明公开

EP1309967A1 METHOD AND POSITION CONTROL FOR A SERVO SYSTEM FOR POSITIONING A HEAD LATERALLY WITH RESPECT TO DEFINED SERVO TRACKS 有权
标题翻译：方法和定位的动力系统用于磁头相对于定义的功率TRACKS横向定位
公开(公告)号：EP1309967A1
公开(公告)日：2003-05-14
申请号：EP01947657.1
申请日：2001-07-06
申请人： International Business Machines Corporation
发明人： BUI, Nhan, Xuan , KOSKI, John, Alexander , SASAKI, Akimitsu,Clover Hill Apt. D4 , TSURUTA, Kazuhiro
IPC分类号： G11B5/58 , G11B21/10 , G11B21/08 , G11B5/584 , G11B5/55
CPC分类号： G11B5/584 , G11B5/5508 , G11B21/088 , G11B21/103
摘要： A method and position control for a servo system for positioning a head laterally with respect to defined servo tracks. The servo system comprises a servo sensor and detector (115) for sensing lateral position of the head (15) and a compound actuator (14) having a fine actuator portion (20) and a coarse actuator portion (16). The position control (116) provides position indications for the coarse actuator portion (16), which may comprise a table relating predetermined nominal lateral position indications to the defined servo tracks. The position control (116) positions the coarse actuator portion (116) at an estimated position with respect to the defined servo tracks, and responds to the servo sensor to determine which servo track is closest to the estimated position. The position control (116) sets the coarse actuator portion (16) position indication to the predetermined nominal lateral position indication of the closest defined servo track, e.g., by looking it up in the table. This thereby corrects the indication of the position of the coarse actuator portion (16).

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