公开(公告)号：US5457581A

公开(公告)日：1995-10-10

申请号：US866932

申请日：1992-04-10

申请人： Kurt F. Hallamasek

发明人： Kurt F. Hallamasek

IPC分类号： G11B20/14 ,  G11B27/13 ,  G11B5/09

CPC分类号： G11B27/13

摘要： A timing recovery system for the low density longitudinal record channels utilizing capstan velocity or feed forward rate in a magnetic tape recording/reproducing system in which the capstan feed forward velocity, derived from an encoder, provides a signal whose frequency is proportional to the speed of the tape driven by the capstan. A scaling circuit is provided by a frequency-to-voltage converter followed by a voltage-to-frequency converter, the output signal providing a demodulation clock having a multiplied frequency proportional to the data rate reproduced from the tape. The demodulation clock, fed to the timing window generation circuitry, provides an input to data detection circuitry to provide a clocked data output, regardless of the reproduce speed within a very large range of speeds.

摘要翻译： 用于低密度纵向记录通道的定时恢复系统，其利用磁带记录/再现系统中的主导速度或前馈速率，其中从编码器导出的主导轴前馈速度提供频率与 由主导带驱动的磁带。 缩放电路由频率到电压转换器，随后是电压 - 频率转换器提供，输出信号提供具有与从磁带重现的数据速率成比例的倍频的解调时钟。 馈送到定时窗口生成电路的解调时钟为数据检测电路提供输入，以提供时钟数据输出，而不管在非常大的速度范围内的再现速度如何。

公开(公告)号：US5315452A

公开(公告)日：1994-05-24

申请号：US847290

申请日：1992-03-10

申请人： Kwon-pyo Hong

发明人： Kwon-pyo Hong

IPC分类号： G11B15/02 ,  G11B15/03 ,  G11B15/093 ,  G11B15/18 ,  G11B15/46 ,  G11B15/467 ,  G11B15/52 ,  G11B27/13 ,  G11B27/17 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10 ,  H04N5/76 ,  H04N5/782 ,  H04N7/088

CPC分类号： H04N7/0887 ,  G11B15/026 ,  G11B15/03 ,  G11B15/093 ,  G11B15/1875 ,  G11B15/4673 ,  G11B15/52 ,  G11B27/13 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10 ,  H04N5/782 ,  G11B2220/90

摘要： An apparatus and a method for automatically adjusting the recording speed of a recorder, such as a video cassette recorder (VCR) are provided, wherein the recording speed is automatically changed by comparing the remaining length of a recording medium such as a tape with the remaining recording time of a program, thereby enabling the program to be recorded without interruption. The apparatus includes a reel rotation sensing device for sensing the states of a take-up reel and a supply reel, data input device for inputting data and setting a mode, a memory for storing the data input from the data input device, a system-control microcomputer for calculating a remaining tape length in accordance with the output signal from the reel rotation sensing device, and outputting a signal for controlling the tape's recording mode by comparing the remaining tape length with the data recorded in the memory, and a servo microcomputer for driving motors in accordance with the control signal from the system-control microcomputer.

摘要翻译： 提供了一种用于自动调节诸如录像机（VCR）的记录器的记录速度的装置和方法，其中记录速度通过将诸如磁带的记录介质的剩余长度与其余的 程序的记录时间，从而使得能够不间断地记录程序。 该装置包括用于感测卷取卷轴和供带盘的状态的卷轴旋转检测装置，用于输入数据和设置模式的数据输入装置，用于存储从数据输入装置输入的数据的存储器， 控制微型计算机，用于根据来自卷轴旋转感测装置的输出信号计算剩余胶带长度，并通过将剩余胶带长度与记录在存储器中的数据进行比较来输出用于控制胶带记录模式的信号;以及伺服微型计算机 根据系统控制微机的控制信号驱动电机。

公开(公告)号：US5309300A

公开(公告)日：1994-05-03

申请号：US740800

申请日：1991-08-06

申请人： David R. Lee

发明人： David R. Lee

IPC分类号： G11B15/093 ,  G11B15/43 ,  G11B15/54 ,  G11B27/13 ,  G11B15/46

CPC分类号： G11B27/13 ,  G11B15/093 ,  G11B15/43 ,  G11B15/54

摘要： This invention is a beginning-of-tape/end-of-tape detection apparatus and method for use in a tape drive system having supply reel, take-up reel, and capstan motion sensors. The invention comprises monitoring means for monitoring each of the angular position signals and processor means for computing beginning-of-tape and end-of-tape utilizing the varying diameters of the supply reel and its tape pack and the take-up reel and its tape pack, and angular velocities of the reels and capstan. This invention provides a plurality of systems and methods for BOT/EOT detection with selectable tolerance levels. These include coarser detection without capstan engagement of tape (for use in high-speed spacing operations), finer detection utilizing capstan engagement, and absolute BOT/EOT detection utilizing the physical ends of the tape. This invention has the advantage of accurately determining beginning and end of tape without requiring special detectors.

摘要翻译： 本发明是用于具有供带盘，卷取卷轴和主导轴运动传感器的带驱动系统中的带状带开始检测装置和方法。 本发明包括监测装置，用于监测每个角位置信号和处理器装置，用于利用供带盘及其带盒和卷取卷筒及其带的变化直径来计算胶带开始和胶带末端 卷轴和卷轴的角速度。 本发明提供了用于具有可选公差水平的BOT / EOT检测的多个系统和方法。 这些包括较粗略的检测，没有带状磁带接合（用于高速间距操作），使用主导轴接合的更精细的检测，以及利用磁带物理端的绝对BOT / EOT检测。 本发明的优点在于，无需专门的检测器即可精确地确定胶带的开始和结束。

公开(公告)号：US5275351A

公开(公告)日：1994-01-04

申请号：US875810

申请日：1992-04-30

申请人： Tzong-Sheau Wu ,  Jing-Chung Shen

发明人： Tzong-Sheau Wu ,  Jing-Chung Shen

IPC分类号： G11B15/46 ,  G11B27/13 ,  G11B27/22

CPC分类号： G11B15/46 ,  G11B27/13

摘要： An apparatus and method are disclosed for advancing a tape at a constant, high speed. Two detectors are provided for detecting values representative of the rotational periods of the reels at both low and high tape advance speeds. A calculator is included for determining particular arithmetic functions of these values. A comparator is also provided, which has a memory for storing a parameter dependent on a particular arithmetic function of values representative of low speed rotational periods of the reels. The comparator is provided for comparing the results of a particular arithmetic function of values representative of high speed rotational periods of the reels with the parameter and for outputting an error signal for adjusting the tape advance speed to maintain a constant, high speed.

摘要翻译： 公开了用于以恒定的高速推进带的装置和方法。 提供两个检测器，用于检测代表低和高磁带进给速度的卷轴的旋转周期的值。 包含一个计算器用于确定这些值的特定算术功能。 还提供了一种比较器，其具有用于存储取决于表示卷轴的低速旋转周期的值的特定算术函数的参数的存储器。 提供比较器，用于将表示卷轴的高速旋转周期的值的特定运算功能的结果与参数进行比较，并输出用于调整磁带进给速度以维持恒定的高速的误差信号。

公开(公告)号：US5125588A

公开(公告)日：1992-06-30

申请号：US585606

申请日：1990-09-20

申请人： Luciano Perego

发明人： Luciano Perego

IPC分类号： G11B23/113 ,  G11B27/13

CPC分类号： G11B23/113 ,  G11B27/13

摘要： In the described method and apparatus a leader, distributed between two winding hubs of a magnetic tape cassette, is first completely wound onto one hub by means of a first motor. Then, a second motor carries out a complete rewinding of the leader onto the second hub to enable an encoder to execute the counting of the overall length of the leader. Subsequently the first motor is operated again to rewind the leader onto the first hub. The encoder counts how much leader has been rewound on the first hub and causes the stoppage of the rewinding when the length of the rewound leader reaches a predetermined value. The invention arranges a leader so that it may be partly extracted from the cassette and then cut into two equal pieces which will be spliced to the opposite ends of magnetic tape.

摘要翻译： 在所描述的方法和装置中，分配在磁带盒的两个绕组轮毂之间的引导件首先通过第一马达完全卷绕到一个轮毂上。 然后，第二电动机将引导件完全倒转到第二集线器上，以使得编码器能够执行对引导件的总长度的计数。 随后，第一马达再次被操作以将引导器重绕到第一枢轴上。 编码器计数在第一集线器上重新卷绕多少引导件，并且当重绕引线的长度达到预定值时导致重绕的停止。 本发明设置一个引导件，使其可以从盒中部分地提取，然后切成两个相等的片段，这些片段将被拼接到磁带的相对端。

公开(公告)号：US5032937A

公开(公告)日：1991-07-16

申请号：US381257

申请日：1989-07-18

申请人： Yutaka Suzuki ,  Masaharu Hayakawa ,  Takehiko Yonekawa

发明人： Yutaka Suzuki ,  Masaharu Hayakawa ,  Takehiko Yonekawa

IPC分类号： G11B15/02 ,  G11B15/03 ,  G11B27/10 ,  G11B27/13 ,  G11B27/34 ,  G11B27/36 ,  H04N5/76

CPC分类号： G11B27/34 ,  G11B15/03 ,  G11B27/13 ,  G11B2220/90 ,  G11B27/36

摘要： A magnetic tape player which includes a tape transport speed selector capable of assuming one of first and second modes during which the magnetic recording tape is transported at a first transport speed and a second transport speed which is 1/n (n being an integer other than 1) of the first transport speed, respectively, a remaining tape length measuring means for measuring a length of time available for recording information to an end of the magnetic recording tape when the magnetic recording tape is transported at the first transport speed, a recording timer for outputting a remaining time signal indicative of the balance between a preset recording time and the length of time actually passed in recording and for outputting a terminating signal necessary to terminate the transport of the magnetic recording tape when the balance becomes zero, and a comparator for comparing the available recording time signal and the remaining time signal with a conversion value during information recording with the magnetic recording tape transported at the second transport speed. If the available recording time signal is higher than the remaining time, the magnetic recording tape is transported at the first transport speed, but if the available recording time signal is lower than the remaining time, the magnetic recording tape is transported at the second transport speed.

摘要翻译： 一种磁带播放器，其包括带传送速度选择器，其能够采用第一和第二模式之一，在该方式期间磁记录带以第一传送速度传输，第二传输速度为1 / n（n为除了 1）第一传送速度的磁带长度测量装置，用于当以第一传送速度传送磁记录带时测量可用于记录信息到磁记录带的一端的时间长度的剩余磁带长度测量装置;记录计时器 用于输出指示预设记录时间与记录中实际通过的时间长度之间的平衡的剩余时间信号，以及当余额变为零时输出终止磁记录带的传送所需的终止信号;以及比较器 在信息记录器期间将可用记录时间信号和剩余时间信号与转换值进行比较 以第二传送速度运输磁记录带。 如果可用记录时间信号高于剩余时间，则以第一传送速度传送磁记录带，但是如果可用记录时间信号低于剩余时间，则磁记录带以第二传输速度 。

公开(公告)号：US4953040A

公开(公告)日：1990-08-28

申请号：US462874

申请日：1989-12-29

申请人： Rolf Hedtke ,  Reinhard Fach

发明人： Rolf Hedtke ,  Reinhard Fach

IPC分类号： G11B27/19 ,  G11B27/13 ,  G11B27/28 ,  G11B27/32

CPC分类号： G11B27/28 ,  G11B27/13 ,  G11B27/323 ,  G11B2220/90

摘要： Picture field ordinal numbers recorded near the synchronizing signals of video tape recordings are currently stored in a register as the tape is played back while a modulo 4 up/down counter is incremented or decremented according to the direction of tape transport. A comparison operation checks whether the picture field numbering is in step with the counter for detection of discontinuities or errors. Then a longitudinal track with coded pulses can be read from the tape. A further comparison can be made for checking reliability, bridging errors, and for detecting and indicating discontinuities in picture field numbering sequences.

摘要翻译： 根据磁带传送的方向，当模4递增/递减计数器递增或递减时，随着磁带被重放，记录在磁带记录同步信号附近的图象字数序号被存储在寄存器中。 比较操作检查图像字段编号是否与用于检测不连续性或错误的计数器步进。 然后可以从带读取具有编码脉冲的纵向轨道。 可以进一步比较检查可靠性，桥接误差，以及用于检测和指示图像场编号序列中的不连续性。

公开(公告)号：US4933781A

公开(公告)日：1990-06-12

申请号：US262109

申请日：1988-10-19

申请人： Hiroshi Nishimura ,  Tatsuo Ogawa

发明人： Hiroshi Nishimura ,  Tatsuo Ogawa

IPC分类号： G11B27/00 ,  G06K19/06 ,  G08B25/14 ,  G11B15/02 ,  G11B27/024 ,  G11B27/10 ,  G11B27/11 ,  G11B27/13 ,  G11B27/32 ,  G11B27/34 ,  G11B31/00

CPC分类号： G11B15/023 ,  G06K19/06187 ,  G08B25/14 ,  G11B27/024 ,  G11B27/107 ,  G11B27/11 ,  G11B27/13 ,  G11B27/328 ,  G11B27/34 ,  G11B31/00 ,  G11B2220/65 ,  G11B2220/90

摘要： A recording system and a recording and/or reproducing apparatus in which a first information unit signal is recorded on a recording medium; a first data unit signal relating to the first information unit signal is recorded on the recording medium at the rear side of the first information unit signal; when a succeeding second information unit signal newly appears thereafter, second information unit signal is recorded on the recording medium at the rear side of the first information unit signal; and a second data unit signal relating to the second information unit signal and the first data unit signal are recorded together on the recording medium at the rear side of the second information unit signal.

摘要翻译： 一种记录系统和记录和/或再现装置，其中第一信息单元信号被记录在记录介质上; 与第一信息单元信号相关的第一数据单元信号被记录在第一信息单元信号的后侧的记录介质上; 当随后的第二信息单元信号新出现时，第二信息单元信号被记录在第一信息单元信号的后侧的记录介质上; 并且与第二信息单元信号和第一数据单元信号相关的第二数据单元信号被一起记录在第二信息单元信号的后侧的记录介质上。

公开(公告)号：US4758913A

公开(公告)日：1988-07-19

申请号：US851810

申请日：1986-04-14

申请人： Jeremy Saltzman ,  Betsy Hipp ,  John J. Dwyer

发明人： Jeremy Saltzman ,  Betsy Hipp ,  John J. Dwyer

IPC分类号： G11B27/10 ,  G11B27/11 ,  G11B27/13 ,  G11B27/28 ,  G11B27/34

CPC分类号： G11B27/107 ,  G11B27/11 ,  G11B27/13 ,  G11B27/28 ,  G11B27/34 ,  G11B2220/65 ,  G11B2220/90

摘要： A method and apparatus for indicating the number of the particular message that has been reached on a bi-directionally movable record medium used with a record/playback device. A position count is incremented and decremented as the record medium moves in forward and reverse directions, respectively; and end-of-message counts representing the locations of the ends of messages relative to an arbitrary reference location of the record medium are stored. Information representing the number of each message whose end-of-message count is stored is provided; and the number of the message which has been reached is determined as a function of which stored end-of-message count is greater than the present position count and which stored end-of-message count is less than that position count. To prevent ambiguities in determining the number of the message which has been reached, as when a new, partially used record medium is loaded into the record/playback device and is reversed to a location which precedes the reference location (i. e. the starting point of the record medium when it is loaded into the device), the position count is preset to a predetermined count when the record medium is replaced. This predetermined count is sufficient to prevent decrementing of the position count below zero, which would be interpreted as being greater than any of the stored end-of-message counts, even if the full amount of the newly-loaded record medium moves in the reverse direction.

摘要翻译： 一种用于指示在与记录/重放装置一起使用的双向可移动记录介质上已经达到的特定消息的编号的方法和装置。 当记录介质分别沿正向和反向移动时，位置计数递增和递减; 并且存储表示消息的相对于记录介质的任意参考位置的位置的消息结束计数。 提供表示存储结束消息计数的每个消息的号码的信息; 并且确定已经达到的消息的数量作为存储的消息结束计数大于当前位置计数并且存储的消息结束计数小于该位置计数的功能的函数。 为了防止确定已经达到的消息的数量的模糊性，就像当新的部分使用的记录介质被加载到记录/重放装置中并且被反转到在参考位置之前的位置（即， 当记录介质被加载到设备中时），当更换记录介质时，位置计数被预设为预定的计数。 这个预定的计数足以防止位置计数的递减低于零，这将被解释为大于存储的消息结束计数中的任何一个，即使新加载的记录介质的全部量在相反的方向上移动 方向。

公开(公告)号：US4747126A

公开(公告)日：1988-05-24

申请号：US833888

申请日：1986-02-27

申请人： William G. Hood ,  Thomas D. Klarquist ,  Kai-Dick Lee ,  Bruce C. Nepple ,  Daniel C. Olin ,  Lawrence B. Park ,  Michael C. Park

发明人： William G. Hood ,  Thomas D. Klarquist ,  Kai-Dick Lee ,  Bruce C. Nepple ,  Daniel C. Olin ,  Lawrence B. Park ,  Michael C. Park

IPC分类号： G11B15/02 ,  G11B27/10 ,  G11B27/11 ,  G11B27/13 ,  G11B27/28 ,  H04M3/533 ,  H04M3/537 ,  H04M1/65

CPC分类号： G11B27/28 ,  G11B15/023 ,  G11B27/107 ,  G11B27/11 ,  G11B27/13 ,  H04M3/533 ,  H04M3/537 ,  G11B2220/65 ,  G11B2220/90

摘要： The present invention is a magnetic tape-based "voice mail" multi-user message system. The system transmits audio prompts to callers to help guide them through the various procedures. The callers respond with Touch-Tone commands. A novel circuit is provided to detect these tone commands without significant interference from the audio prompt signals. This circuit is highly insensitive to deviations in the impedance of the incoming telephone line from its expected value. A circuit is also provided to prevent Touch-Tone commands which are recorded on tape from being re-executed when they are played back from the tape. A single L.E.D. indicator on each recipient's telephone set indicates the status of the system: idle with new message waiting; idle without new message waiting; busy with new message waiting; or busy without new message waiting.

摘要翻译： 本发明是一种基于磁带的“语音邮件”多用户消息系统。 系统向呼叫者发送音频提示，以帮助他们指导各种程序。 来电者使用Touch-Tone命令进行响应。 提供了一种新颖的电路来检测这些音调命令而没有来自音频提示信号的显着干扰。 该电路对输入电话线路的阻抗与其预期值的偏差高度不敏感。 还提供了一种电路，用于防止录制在磁带上的Touch-Tone命令在从磁带播放时重新执行。 一个L.E.D. 每个接收者的电话机上的指示灯指示系统的状态：空闲，新消息等待; 闲置没有新消息等待; 忙于新消息等待; 或忙碌而没有新消息等待。