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1.发明申请PRINTING WITH ALTERNATIVE HALFTONE PATTERNS IN INK JET PRINTING TO REDUCE INK PENETRATION 有权印刷墨水喷墨打印机中的替代型牛皮纸图案，以减少墨水渗透公开(公告)号：US20100231978A1
公开(公告)日：2010-09-16
申请号：US12403492
申请日：2009-03-13
IPC分类号： H04N1/405
摘要： Systems and methods of printing to a tangible medium provide for reducing ink penetration via the controlled selection of halftone patterns. One method includes steps of printing to the tangible medium (e.g., via a multicolor ink supply such as CMYK) using a plurality of initial halftone patterns, measuring ink absorption of the tangible medium in response to printing to the tangible medium, and determining a subset of the plurality of initial halftone patterns based on the absorption measurement. The method also includes printing a print job to the tangible medium based on the subset of the plurality of initial halftone patterns. For example, a print controller may be reprogrammed with the subset of the plurality of initial halftone patterns to print a print job to reduce the amount of ink applied to the tangible medium.
摘要翻译： 打印到有形介质的系统和方法通过受控选择的半色调图案来减少油墨渗透。 一种方法包括使用多个初始半色调图案打印到有形介质（例如，经由多色墨水供应例如CMYK）的步骤，测量有形介质响应于有形介质的打印的吸墨，以及确定子集 基于吸收测量的多个初始半色调图案。 该方法还包括基于多个初始半色调图案的子集将打印作业打印到有形介质。 例如，打印控制器可以利用多个初始半色调图案的子集来重新编程，以打印打印作业以减少施加到有形介质的墨的量。
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2.发明授权
公开(公告)号：US5629813A
公开(公告)日：1997-05-13
申请号：US406277
申请日：1995-03-16
CPC分类号： G11B5/584 , G11B5/5508
摘要： The present invention provides an apparatus and method for initializing a magnetic tape when it is mounted in a tape drive. In one embodiment, each time a tape is mounted, control parameters pertaining to the servo system are set to predetermined values and servo read elements in the tape head are activated. The tape is moved and a number of position error signal (PES) samples are read and averaged for each of the active servo elements. The value of one or more of the parameters is modified and new PES readings and averages are obtained. This process is repeated for a predetermined combination of parameter values whereupon read and write offsets are calculated and stored for each servo element. During an actual read (or write) operation, the tape head is positioned relative to the data tracks on which the desired data is located and servo control enabled. An actual PES generated by each active servo element is adjusted by the read (or write) offset calculated for that servo element, thereby substantially canceling the effects of element-to-element, module-to-module and azimuthal deviations. The resulting adjusted PES is used by the servo controller to optimize track following.
摘要翻译： 本发明提供一种当磁带安装在磁带驱动器中时初始化磁带的装置和方法。 在一个实施例中，每次安装磁带时，与伺服系统相关的控制参数被设置为预定值，磁带头中的伺服读取元件被激活。 磁带被移动，并且对于每个有效的伺服元件读取和平均多个位置误差信号（PES）样本。 修改一个或多个参数的值，并获得新的PES读数和平均值。 对于参数值的预定组合重复该过程，由此为每个伺服元件计算和存储读取和写入偏移量。 在实际的读取（或写入）操作期间，磁带头相对于所需数据所在的数据磁道定位，伺服控制使能。 由每个有效伺服单元产生的实际PES通过为该伺服单元计算出的读（或写）偏移量进行调整，从而基本上消除了元件间元件，模块间模块和方位偏差的影响。 所得到的经调整的PES由伺服控制器用于优化跟踪跟踪。
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3.发明授权Method and system for position error signal generation using auto correlation 失效使用自动相关的位置误差信号生成方法和系统
公开(公告)号：US5309299A
公开(公告)日：1994-05-03
申请号：US958151
申请日：1992-10-07
申请人： James F. Crossland , Don G. East , John A. Koski , James E. Smith
发明人： James F. Crossland , Don G. East , John A. Koski , James E. Smith
摘要： The present invention provides a method and system for generating a position error signal from a signal produced by a read element detecting a track comprising two harmonically unrelated patterns positioned parallel to each other on a magnetic media. The apparatus of the present invention produces a delayed signal from the read signal produced by the read element. The read signal is multiplied with the delayed signal to form a product signal. The product signal is integrated to produce a position error signal, wherein changes in the position error signal that are proportional to changes in position of the read element over the two patterns positioned parallel to each other on the magnetic media.
摘要翻译： 本发明提供一种方法和系统，用于根据由磁性介质上彼此平行定位的包含两个谐波不相关图形的轨道的读取元件产生的信号产生位置误差信号。 本发明的装置根据由读取元件产生的读取信号产生延迟的信号。 读信号与延迟信号相乘以形成乘积信号。 积分产品信号以产生位置误差信号，其中位置误差信号的变化与在磁介质上彼此平行定位的两个图案上的读取元件的位置变化成比例。
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公开(公告)号：US06995873B1
公开(公告)日：2006-02-07
申请号：US09713985
申请日：2000-11-16
IPC分类号： G06K15/00
CPC分类号： H04N1/4055
摘要： Apparatus and methods for flexible digital halftoning are provided in which novel pattern choices are allowed by not restricting the basic halftone patterns to grow sequentially. Rather, positions in a threshold array allow multiple transitions between on (i.e., printed with toner/ink) and off (not printed) as a function of the input value at the corresponding position. In one embodiment, multiple threshold matrices are employed and the output decision is a vote (e.g., exclusive OR) of the outputs of the individual threshold matrices. In another embodiment, each position contains an arbitrary bit vector to express the output for each input. In yet another embodiment, space efficiency may be achieved by sorting the arbitrary bit vectors into collections of adjacent decisions for a given input value, such as into bytes.
摘要翻译： 提供了用于灵活数字半色调的装置和方法，其中通过不限制基本半色调图案以顺序生长来允许新颖的图案选择。 相反，阈值阵列中的位置允许在打开（即，用墨粉/墨水打印）和关闭（未打印）之间的多个转变作为在相应位置处的输入值的函数。 在一个实施例中，采用多个阈值矩阵，并且输出决定是各个阈值矩阵的输出的投票（例如，异或）。 在另一实施例中，每个位置包含用于表示每个输入的输出的任意位向量。 在又一个实施例中，空间效率可以通过将任意比特向量分类为给定输入值的相邻决策的集合来实现，诸如以字节为单位。
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5.发明授权Printing with alternative halftone patterns in ink jet printing to reduce ink penetration 有权用喷墨打印中的替代半色调图案打印以减少墨水渗透公开(公告)号：US08134750B2
公开(公告)日：2012-03-13
申请号：US12403492
申请日：2009-03-13
摘要： Systems and methods of printing to a tangible medium provide for reducing ink penetration via the controlled selection of halftone patterns. One method includes steps of printing to the tangible medium (e.g., via a multicolor ink supply such as CMYK) using a plurality of initial halftone patterns, measuring ink absorption of the tangible medium in response to printing to the tangible medium, and determining a subset of the plurality of initial halftone patterns based on the absorption measurement. The method also includes printing a print job to the tangible medium based on the subset of the plurality of initial halftone patterns. For example, a print controller may be reprogrammed with the subset of the plurality of initial halftone patterns to print a print job to reduce the amount of ink applied to the tangible medium.
摘要翻译： 打印到有形介质的系统和方法通过受控选择的半色调图案来减少油墨渗透。 一种方法包括使用多个初始半色调图案打印到有形介质（例如，经由多色墨水供应例如CMYK）的步骤，测量有形介质响应于有形介质的打印的吸墨，以及确定子集 基于吸收测量的多个初始半色调图案。 该方法还包括基于多个初始半色调图案的子集将打印作业打印到有形介质。 例如，打印控制器可以利用多个初始半色调图案的子集来重新编程，以打印打印作业以减少施加到有形介质的墨的量。
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6.发明授权Processing servo signals concurrently read from plural spaced-apart servo areas for a magnetic tape having serpentine data track scanning 失效对于具有蛇形数据轨道扫描的磁带，从多个间隔开的伺服区域同时读取伺服信号
公开(公告)号：US5574602A
公开(公告)日：1996-11-12
申请号：US75624
申请日：1993-06-14
CPC分类号： G11B5/584 , G11B15/026 , G11B15/04 , G11B5/5508
摘要： In a magnetic tape drive, a magnetic head simultaneously senses plural track lateral position indicators to generate a like plurality of independently generated sensed position error signals. The sensed position error signals are combined to provide an output position error signal that drives a positioning system to position the magnetic laterally of the length of the magnetic tape. The output position error signal represents an average of the position errors indicated by the sensed position error signals. The quality of the sensed position error signal is monitored, enabling eliminating poor quality signals from the output position error signal for maintaining a quality servo control. If less than a predetermined number of sensed position error signals have acceptable quality, then recording data is prohibited. Independently of sensing servo indicia on a record member to generate the sensed position error signals, a lateral position of the multi-track head is sensed. Upon loading the record member to a load point, the plural track position indicators are simultaneously sensed for centering the head to a predetermined track position. Then, an independent head position sensor is calibrated to the load point track position indicators for use as a verification of validity of the output position error signal. During recording and reading operations, the independent head position is determined on a periodic basis. If an unacceptable change in head position during any measurement period occurs or if the independent measurement indicates an unacceptable lateral deviation from the reference position, all recording is prohibited.
摘要翻译： 在磁带驱动器中，磁头同时感测多个轨道横向位置指示器以产生相似多个独立产生的感测位置误差信号。 感测到的位置误差信号被组合以提供输出位置误差信号，其驱动定位系统以将磁体的横向方向定位在磁带的长度上。 输出位置误差信号表示由感测到的位置误差信号指示的位置误差的平均值。 监测感测到的位置误差信号的质量，从而能够消除来自输出位置误差信号的质量差的信号，以保持质量伺服控制。 如果小于预定数量的感测位置误差信号具有可接受的质量，则禁止记录数据。 独立于在记录构件上感测伺服标记以产生感测到的位置误差信号，感测多轨头的横向位置。 在将记录构件加载到加载点时，同时感测多个轨道位置指示器以将磁头定中心到预定轨道位置。 然后，将独立的头部位置传感器校准到负载点轨道位置指示器，以用作验证输出位置误差信号的有效性。 在记录和读取操作期间，定期地确定独立的头位置。 如果在任何测量期间发生头部位置的不可接受的变化，或者如果独立测量表明与参考位置的不可接受的横向偏差，则禁止所有记录。
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公开(公告)号：US5448430A
公开(公告)日：1995-09-05
申请号：US102368
申请日：1993-08-05
申请人： James A. Bailey , James F. Crossland , James E. Malmberg , Yogesh B. Patel , Maxey P. Von Senden
发明人： James A. Bailey , James F. Crossland , James E. Malmberg , Yogesh B. Patel , Maxey P. Von Senden
CPC分类号： G11B5/584
摘要： The present invention provides an apparatus and method for precise servo tracking of a multi-track magnetic tape head. The magnetic tape has at least one servo area with at least two servo tracks. Adjoining servo tracks have different servo patterns recorded thereon, one being a single frequency, constant amplitude signal, the other alternating between a zero amplitude null signal and a constant amplitude signal of a second frequency. A servo element in the tape head senses and combines the signals from both of the tracks. A detector outputs the peak-to-peak amplitude values of the combined signal and two register modules detect and store the maximum and minimum peak-to-peak values over a predetermined period of time. These maximum and minimum values are provided to a signal processor which determines their ratio. The ratio indicates the amount and direction of any position error of the servo element relative to the edge between the two adjacent servo tracks and is used to direct an actuator to adjust the position of the tape head to minimize the error.
摘要翻译： 本发明提供了一种用于多轨磁带头的精确伺服跟踪的装置和方法。 磁带具有至少一个具有至少两个伺服磁道的伺服区域。 相邻的伺服磁道具有记录在其上的不同的伺服模式，一个是单频，恒定幅度信号，另一个在零幅值零信号和第二频率的恒定幅度信号之间交替。 带头中的伺服元件感测并组合来自两个轨道的信号。 检测器输出组合信号的峰 - 峰幅度值，两个寄存器模块在预定时间段内检测并存储最大和最小峰 - 峰值。 这些最大值和最小值被提供给确定它们的比率的信号处理器。 该比率表示伺服单元相对于两个相邻伺服轨道之间的边缘的任何位置误差的量和方向，并且用于引导致动器来调节磁带头的位置以使误差最小化。
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