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1. 发明授权

US4928196A Magnetic recording device using circumferentially offset heads with double sided media 失效
标题翻译：使用带双面介质的圆周偏移磁头的磁记录装置
公开(公告)号：US4928196A
公开(公告)日：1990-05-22
申请号：US176964
申请日：1988-04-04
申请人： William K. Hickok , John M. Riley , Gerald J. Kosarko
发明人： William K. Hickok , John M. Riley , Gerald J. Kosarko
IPC分类号： G11B5/48 , G11B17/32 , G11B21/00
CPC分类号： G11B17/32 , G11B21/00 , G11B5/4886
摘要： A pair of oppositely-disposed stabilizer devices support opposed magnetic heads for interfacing with opposite sides of a rotating magnetic disk. Each stabilizer device includes a block with an opening through which the magnetic head protrudes for engagement with a respective side of the disk. A flat, circumferential air bearing surface on each block surrounds the opening adjacent the disk for generating coupling forces that deform the disk out of its nominal plane on opposite sides thereof and into intimate contact with the transducing gaps on the respective heads. The stabilizer devices are positioned in relation to separate radii depending from the center of the drive spindle so that a circumferential offset is established that permits substantially separate interaction of the air bearing surfaces with the disk.
摘要翻译：一对相对设置的稳定器装置支撑用于与旋转磁盘的相对侧对接的相对的磁头。每个稳定器装置包括具有开口的块，磁头通过该开口突出以与盘的相应侧接合。每个块上的平坦的周向空气支承表面围绕与盘相邻的开口，用于产生使盘在其相对侧上的标称平面变形并且与各个头上的换能间隙紧密接触的耦合力。稳定器装置相对于从驱动主轴的中心离开的单独的半径而定位，使得建立允许空气轴承表面与盘的基本上分离的相互作用的周向偏移。

2. 发明授权

US4785359A Dual purpose memory for time division multiplexing and time base error correction 失效
标题翻译：用于时分复用和时基误差校正的双重存储器
公开(公告)号：US4785359A
公开(公告)日：1988-11-15
申请号：US915489
申请日：1986-10-06
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： H04N9/81 , H04N9/893 , H04N5/95 , H04N5/92
CPC分类号： H04N9/893 , H04N9/81
摘要： In a time division multiplex video reproducing apparatus, a dual purpose memory serves to (a) perform time compression for time division multiplexing and (b) perform as a variable delay line for time base error correction. Seemingly unavoidable conflicts in the allocation of memory space (between multiplexing operations and time base error correction operations) are eliminated by performing the time base error correction operations during a memory idle time inherent in the time division multiplexing process. As a result, time base error correction in this invention requires little additional hardware and no additional space in the memory beyond that required for time division multiplexing.
摘要翻译：在时分复用视频再现装置中，双用途存储器用于（a）对时分多路复用执行时间压缩，（b）执行用于时基误差校正的可变延迟线。通过在时分复用处理中固有的存储器空闲时间期间执行时基误差校正操作，消除了存储器空间分配（多路复用操作和时基纠错操作之间）中不可避免的冲突。因此，本发明中的时基误差校正需要少量额外的硬件，并且在存储器中没有额外的空间超出时分复用所需的空间。

3. 发明授权

US4763202A Time division multiplex video recorder with high resolution 失效
标题翻译：具有高分辨率的时分复用录像机
公开(公告)号：US4763202A
公开(公告)日：1988-08-09
申请号：US915486
申请日：1986-10-06
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： H04N9/81 , H04N9/80
CPC分类号： H04N9/81
摘要： A time division multiplex video tape recorder has a channel for receiving the main portion of an incoming video signal, comprising the luminance signal and horizontal synchronization pulse, and a separate channel for receiving the modulated sub-carrier portion of the video signal, comprising the chrominance signal. The luminance channel includes a signal processor for separating the luminance signal and horizontal synchronization pulse from one another. The signal processor removes the horizontal synchronization pulse from the luminance channel and inserts it into the chrominance channel. The luminance signal of each horizontal video line is time-compressed by itself into a first time segment, while the horizontal sync pulse and the chrominance signal of the same horizontal line are time-compressed together into a second time segment, the two segments being recorded serially within the space of one horizontal line scan period. The removal of the horizontal sync pulse from the luminance channel facilitates a decrease in the time compression ratio of the luminance signal and of the time-compressed luminance bandwidth so as to avoid the magnetic tape-to-head interaction cut-off frequency, thereby providing an improvement in overall image quality.
摘要翻译：时分多路复用录像机具有用于接收输入视频信号的主要部分的通道，包括亮度信号和水平同步脉冲，以及用于接收视频信号的调制副载波部分的单独信道，包括色度信号。亮度通道包括用于将亮度信号和水平同步脉冲彼此分离的信号处理器。信号处理器从亮度通道去除水平同步脉冲并将其插入色度通道。每个水平视频行的亮度信号自身被时间压缩成第一时间段，而水平同步脉冲和相同水平线的色度信号被一起压缩成第二时间段，记录两个段连续地在一个水平行扫描周期的空间内。从亮度通道去除水平同步脉冲有助于降低亮度信号的时间压缩比和时间压缩的亮度带宽，以避免磁带到头的交互频率，从而提供改善整体图像质量。

4. 发明授权

US4750054A Noise-impervious video timing recovery and automatic skew compensation 失效
标题翻译：无噪声视频定时恢复和自动偏移补偿
公开(公告)号：US4750054A
公开(公告)日：1988-06-07
申请号：US915487
申请日：1986-10-06
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： H04N5/95
CPC分类号： H04N5/95
摘要： Timing in a time division multiplex video cassette recorder is improved and skew jump error is virtually eliminated by recording video signals with a superimposed pilot signal synchronized to--but having a frequency greater than--the incoming horizontal sync pulse frequency. During playback, a local pilot signal--similar to the previously recorded superimposed pilot signal--and a local horizontal sync signal control the de-multiplexing process and timing. The local pilot and horizontal sync signals are controlled by a three-tiered feedback timing control loop: a phase lock loop varies a local clock signal in order to correct very fine time differences between the recorded and local pilot signals; a digital loop changes the frequency ratio between the clock signal and the local pilot signal to correct larger time differences between the recorded and local horizontal sync pulse signals; and a look-ahead up/down counter counts and stores the net cumulative change in the pulse repetition frequency ratio. The ratio is changed by the entire cumulative amount during (or just prior to) the first horizontal line (only) of each video field as a very large automatic correction which anticipates skew jump error. The phase lock loop is virtually unaffected by interruption of the digital control loop (due to temporary drop-outs of the imcoming horizontal sync pulse signal), and the systm timing is therefore impervious to dropouts or noise.
摘要翻译：改进了时分多路复用录像机的时序，并且通过以与大于进入的水平同步脉冲频率同步的叠加导频信号记录视频信号，实际上消除了偏斜跳跃误差。在重放期间，类似于先前记录的叠加导频信号的本地导频信号和本地水平同步信号控制解复用处理和定时。本地导频和水平同步信号由三层反馈定时控制环控制：锁相环改变本地时钟信号，以便校正记录和本地导频信号之间非常精细的时间差; 数字环路改变时钟信号和本地导频信号之间的频率比，以校正记录和本地水平同步脉冲信号之间的较大时间差; 并且前进上/下计数器计数并存储脉冲重复频率比的净累积变化。在每个视频场的第一个水平线（仅）之间的（或之前）期间，该比率被改变为作为预期偏斜跳跃误差的非常大的自动校正的整个累积量。锁相环实际上不受数字控制环路的中断（由于即将发生的水平同步脉冲信号的暂时丢失）的影响，因此系统定时不会出现掉落或噪声。

5. 发明授权

US4264163A Exposure control apparatus with compensation for film reciprocity failure 失效
标题翻译：曝光控制装置，补偿薄膜互易性故障
公开(公告)号：US4264163A
公开(公告)日：1981-04-28
申请号：US7528
申请日：1979-01-29
申请人： William K. Hickok , Robert C. Wheeler
发明人： William K. Hickok , Robert C. Wheeler
IPC分类号： G03B7/083
CPC分类号： G03B7/083
摘要： A camera includes a photographic film having a given film speed which decreases when the film is exposed to light which varies from a given illumination level. A camera shutter is controlled by a timing circuit adapted to produce an exposure which is adjusted to compensate for the decreased film speed.
摘要翻译：照相机包括具有给定胶片速度的照相胶片，当胶片暴露于从给定照明级别变化的光时，胶片速度降低。相机快门由适于产生曝光的定时电路控制，该曝光被调整以补偿降低的胶片速度。

6. 发明授权

US4723181A Tape memory with integral disk index on reel 失效
标题翻译：磁带存储器，带卷盘上的整体磁盘索引
公开(公告)号：US4723181A
公开(公告)日：1988-02-02
申请号：US911198
申请日：1986-09-24
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： G06F3/06 , G11B15/02 , G11B19/02 , G11B25/10 , G11B27/10 , G11B27/11 , G11B27/32
CPC分类号： G06F3/0601 , G11B15/026 , G11B19/02 , G11B25/10 , G11B27/107 , G11B27/11 , G06F2003/0697 , G11B2220/20 , G11B2220/90
摘要： A peripheral memory controller controls a helical scan magnetic tape recorder so as to record and play back data files in parallel tracks on a magnetic tape. The tape is contained in a cassette having a magnetic disk fixably mounted on one reel of the cassette so that the movement of the tape and rotation of the disk are simultaneous. The peripheral memory controller refers to a file allocation table stored in one (or more) tracks on the disk, in order to correlate data file descriptions with track locations on the tape. A disk head rapidly scans the file allocation table disk track(s) within just one (or a few) revolutions of the disk while transmitting the contents of the table to the peripheral memory controller. The controller deduces therefrom the tape track location of a particular data file and commands the tape to be transported to that location in order to access that file. In another embodiment, sub-file allocation tables, each describing the tape track location of each sub-file within a given data file, are recorded in other disk tracks whose locations are recorded, in turn, in the file allocation table disk track. In order to take advantage of the co-movement of the tape and the disk, each sub-file allocation table stores the names of sub-files whose tape track locations fall within a length of tape covered during one rotation of the reel and disk, so that each sub-file allocation table disk track may be scanned completely while maintaining the position of the tape within the tape location range of the corresponding sub-file allocation table.
摘要翻译：外围存储器控制器控制螺旋扫描磁带录像机，以便在磁带上记录和再现并行轨道中的数据文件。磁带被容纳在具有可固定地安装在盒的一个卷轴上的磁盘的盒中，使得磁带的移动和磁盘的旋转同时进行。外围存储器控制器是指存储在磁盘上的一个（或多个）磁道中的文件分配表，以便将数据文件描述与磁带上的轨道位置相关联。磁盘头在将表的内容传送到外围存储器控制器的同时，在磁盘的一个（或几个）转圈内快速扫描文件分配表磁盘轨道。控制器从其中推导出特定数据文件的磁带位置，并命令磁带被传送到该位置以访问该文件。在另一个实施例中，每个描述给定数据文件内的每个子文件的磁带轨迹位置的子文件分配表被记录在其位置被记录在文件分配表磁盘轨道中的其他磁盘轨道中。为了利用磁带和磁盘的共同运动，每个子文件分配表存储磁带位置落在卷轴和磁盘的一个旋转期间所覆盖的磁带长度内的子文件的名称，使得可以完全扫描每个子文件分配表磁盘轨道，同时将磁带的位置保持在相应的子文件分配表的磁带位置范围内。

7. 发明授权

US4691245A Method and apparatus for combining two color video signals 失效
标题翻译：用于组合两个彩色视频信号的方法和装置
公开(公告)号：US4691245A
公开(公告)日：1987-09-01
申请号：US677270
申请日：1984-12-03
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： H04N7/08 , H04N9/81 , H04N9/80 , H04N5/782 , H04N11/06
CPC分类号： H04N9/81 , H04N7/0806
摘要： Method and apparatus for the processing of color video signals in which the two fields of a color video frame are compressed into a single field without appreciable loss of picture resolution and without image disturbance and degradation. The compressed signal may be recorded on a single track of a VCR and played back in a still-frame mode without picture jitter, color loss, or image degradation. According to the invention, first and second color video signals of a predetermined time period (such as a field period) are compressed into a time-division-multiplexed (TDM) signal of a single time period. The luminance components of the first and second signals are summed to produce a sum luminance signal and subtracted to produce a difference luminance signal, the sum signal having a greater bandwidth than the difference signal. A chrominance signal is produced which is a function of the chrominance components of the first and second signals. The luminance signals and chrominance signal are compressed and arranged sequentially to form a TDM signal of a single time period.
摘要翻译：用于处理彩色视频信号的方法和装置，其中彩色视频帧的两个场被压缩成单个场，而没有明显的图像分辨率损失并且没有图像干扰和降级。压缩信号可以被记录在VCR的单个轨道上，并以静止帧模式回放，而没有图像抖动，颜色损失或图像劣化。根据本发明，将预定时间段（例如场周期）的第一和第二彩色视频信号压缩成单个时间段的时分复用（TDM）信号。将第一和第二信号的亮度分量相加以产生和亮度信号并减去以产生差分亮度信号，该和信号具有比差分信号更大的带宽。产生色度信号，其是第一和第二信号的色度分量的函数。亮度信号和色度信号被依次压缩和排列，形成单个时间周期的TDM信号。

8. 发明授权

US5172224A Printer calibration method using electronically-decoupled color and tone scale adjustments 失效
标题翻译：打印机校准方法采用电子去耦颜色和色阶调节
公开(公告)号：US5172224A
公开(公告)日：1992-12-15
申请号：US629515
申请日：1990-12-18
申请人： Robert P. Collette , William K. Hickok
发明人： Robert P. Collette , William K. Hickok
IPC分类号： H04N1/60
CPC分类号： H04N1/6033 , Y10S347/90
摘要： A calibration utility 22 for electronically-generated images decouples tone scale and color corrections by completing tone scale and color balance corrections upon separate RGB image signals (representative of intensity) and hue and saturation corrections upon combinations of RGB signals (representative of chrominance). An operator adjusts tone scale controls 32 and color controles 34, which provide values for calibrating separate RGB tone scale look-up tables 49a, 49b, and 49c and a color matrix 48 in a printer 14. To decouple the corrections, the tone scale look-up tables 49a, 49b, 49c are adjusted until the brightness of a predetermined number of image levels is accurately rendered. If the resultant image signal contains coloration in neutral areas, the values in the particular look-up table(s) for the color(s) producing the color cast in the neutral areas is adjusted, thereby producing a neutrally-adjusted image signal substantially free of neutral coloration. The hue and saturation of the image can then be adjusted by modifying terms in the color matrix 48 without affecting the tone scale reproduction.
摘要翻译：用于电子产生图像的校准实用程序22通过在RGB信号（代表色度）的组合上完成分离的RGB图像信号（代表强度）和色调和饱和度校正后完成色阶和色平衡校正来解耦色阶和色彩校正。操作员调节色阶控制器32和色彩控制器34，其提供用于校准打印机14中的分离的RGB色阶查找表49a，49b和49c以及彩色矩阵48的值。为了分离校正，色阶外观调整表49a，49b，49c直到准确地呈现预定数量的图像级的亮度。如果所得到的图像信号在中性区域中包含着色，则调节在中性区域中产生色调的颜色的特定查找表中的值，从而产生基本上无空白的中和调整图像信号的中性着色。然后，可以通过修改颜色矩阵48中的项来调整图像的色相和饱和度，而不影响色阶重现。

9. 发明授权

US4931883A Zero guard-band skip-field video cassette recorder 失效
标题翻译：零保卫带跳过式录像机
公开(公告)号：US4931883A
公开(公告)日：1990-06-05
申请号：US908750
申请日：1986-09-18
申请人： Hans-Peter Baumeister , William K. Hickok , Lawrence J. Bernstein , Matthew DiPietro , William T. Hochreiter
发明人： Hans-Peter Baumeister , William K. Hickok , Lawrence J. Bernstein , Matthew DiPietro , William T. Hochreiter
IPC分类号： H04N5/7826
CPC分类号： H04N5/7826
摘要： A skip-field guard-bandless video tape recorder records and plays back adjacent tracks on a video tape with two closely adjacent heads of opposing head gap azimuth angles (to suppress cross-talk), only during alternate (odd) half-rotations of the head drum. Unavoidable cross-talk of synchronization pulses from adjacent tracks does not create visible interference or timing errors during playback by virtue of a special offset angle .theta..sub.1, between the adjacent recording heads, proportional to the linear offset distance between adjacent tracks. During playback, skipped fields are "filled-in" by a repetition of each recorded field through a second (duplicate) pair of closely adjacent heads of opposing azimuth positioned to retrace the recorded tracks during the other alternate (even) half-rotations of the head drum. An offset angle .theta..sub.2 between the two head pairs (i.e., between opposing heads of like azimuth) corresponds to a half horizontal video line and provides for precise self-interlacing of the repeated fields.
摘要翻译：跳过式无障碍磁带录像机在具有相对的头部间隙方位角（具有抑制串扰）的两个相邻的头部的视频磁带上记录和重放相邻的轨道，仅在交替（奇数）半转的头鼓。来自相邻轨道的同步脉冲的不可避免的串扰通过凭借相邻记录头之间的特殊偏移角θ1与相邻轨道之间的线性偏移距离成比例而在再现期间不产生可见的干扰或定时误差。在播放期间，通过重复每个记录的场通过相对方位角的邻近的第二（重复的）一对的位置来跳过的场被放置，以在另一个（偶数）半个旋转的半转期间回扫记录的轨道头鼓。两个头对之间（即，相似的方位角的相对头之间）之间的偏移角度θ2对应于半水平视频线，并提供重复场的精确自交错。

10. 发明授权

US4752830A Time division multiplex video recorder with enhanced vertical chrominance sampling rate 失效
标题翻译：具有增强垂直色度采样率的时分复用录像机
公开(公告)号：US4752830A
公开(公告)日：1988-06-21
申请号：US912863
申请日：1986-09-29
申请人： William K. Hickok
发明人： William K. Hickok
IPC分类号： H04N5/7826 , H04N9/825 , H04N9/79
CPC分类号： H04N5/78263 , H04N9/825
摘要： A time division multiplex video recording system records every other one of the two chrominance signals (I and Q or R-Y and B-Y) of successive video fields and records the luminance signal (Y) of every field in separate time division segments. During odd fields, it records the luminance signal and the I chrominance signal of every horizontal line and during even fields it records the luminance signal with the Q chrominance signal of every horizontal line. During playback, a field store memory receives and stores the previously recorded chrominance signal of each field for repetition during the next to fill in for the unrecorded chrominance signal. In another embodiment, a helical scan four-head video playback system repeats every field during playback of the next field by playing back the adjacent tape tracks of both fields simultaneously, to fill in for the unrecorded chrominance signal (thereby eliminating the requirement for a field store memory). The invention represents a dramatic improvement because it achieves at least twice the vertical chrominance sampling rate of known time division multiplex video recording techniques.
摘要翻译：时分复用视频记录系统记录连续视频场的两个色度信号（I和Q或R-Y和B-Y）中的每一个，并将各场的亮度信号（Y）记录在分开的时分片段中。在奇数场期间，它记录每个水平线的亮度信号和I色度信号，并且在偶数场期间，其记录具有每个水平线的Q色度信号的亮度信号。在重放期间，场存储存储器接收并存储先前记录的每个场的色度信号，用于在下一个期间重复以填充未记录的色度信号。在另一个实施例中，螺旋扫描四头视频播放系统在播放下一个场期间通过同时播放两个场的相邻磁道轨迹来重复每个场，以填补未记录的色度信号（从而消除对场的要求存储内存）。本发明表现出显着的改进，因为它实现了已知时分复用视频记录技术的垂直色度采样率的至少两倍。

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