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1. 发明授权

US4716454A Chroma phase word encode/decode in a video processing system 失效
标题翻译：视频处理系统中的色相相位字编码/解码
公开(公告)号：US4716454A
公开(公告)日：1987-12-29
申请号：US788597
申请日：1985-10-17
申请人： Reginald W. Oldershaw , Steven D. Wagner
发明人： Reginald W. Oldershaw , Steven D. Wagner
IPC分类号： H04N9/89 , H04N9/87 , H04N9/873 , H04N9/877 , H04N9/888 , H04N9/47 , H04N5/78
CPC分类号： H04N9/877 , H04N9/873 , H04N9/888
摘要： A video signal correction circuit of a signal processing system includes means for determining the chroma line type, for inserting the line type information in the video signal, and for extracting the line type information from the video signal downstream to allow selecting the phase of the chroma subcarrier to match the phase of the output station reference.
摘要翻译：信号处理系统的视频信号校正电路包括用于确定色度线类型的装置，用于将视频信号中的线型信息插入，并从下行的视频信号中提取线型信息，以允许选择色度的相位副载波匹配输出站参考相位。

2. 发明授权

US4763203A Time base corrector with accurate timing corrector control 失效
标题翻译：时基校正器，具有精确的时序校正器控制
公开(公告)号：US4763203A
公开(公告)日：1988-08-09
申请号：US788997
申请日：1985-10-17
申请人： Reginald W. Oldershaw , Steven D. Wagner , Jan S. Wesolowski
发明人： Reginald W. Oldershaw , Steven D. Wagner , Jan S. Wesolowski
IPC分类号： H04N9/896 , H04N5/76
CPC分类号： H04N9/896
摘要： A digital time base corrector for correcting time base errors of the digital samples of a video signal for all the various speed modes of a reproducing apparatus. The time base corrector is configured having a small capacity memory and a large capacity memory wherein the small capacity memory is divided into a first section and a second section. The first section of the small capacity memory retimes data samples for subcarrier phase errors without losing or repeating data, while the second section of the small capacity memory retimes data for horizontal frequency error without losing or repeating data in all reproducing modes except shuttle. Further, the second section of the small capacity memory in reverse and forward shuttle retimes the data for horizontal frequency and phase errors while equalizing the data rate through the time base corrector by selectively discarding or repeating horizontal lines based on line type. The large capacity memory in all reproducing modes except shuttle retimes data for timing errors of line and field phase while in shuttle the memory retimes for field phase only.
摘要翻译：一种数字时基校正器，用于校正重放装置的所有各种速度模式的视频信号的数字样本的时基误差。时基校正器被配置为具有小容量存储器和大容量存储器，其中小容量存储器被分成第一部分和第二部分。小容量存储器的第一部分用于子载波相位误差的数据采样，而不丢失或重复数据，而小容量存储器的第二部分对水平频率误差重新定位数据，而不会丢失或重复除梭之外的所有再现模式中的数据。此外，反向和前向穿梭的小容量存储器的第二部分通过选择性地丢弃或重复基于线路类型的水平线来平均通过时基校正器来均衡数据速率的水平频率和相位误差的数据。所有复制模式下的大容量存储器，除了穿梭重新定时数据，用于线和场相位的定时误差，同时仅在场相位的存储器复位中。

3. 发明授权

US4760470A Multi-standard adaptive dropout compensator 失效
标题翻译：多标准自适应压差补偿器
公开(公告)号：US4760470A
公开(公告)日：1988-07-26
申请号：US781279
申请日：1985-09-27
申请人： Steven D. Wagner , Reginald W. Oldershaw
发明人： Steven D. Wagner , Reginald W. Oldershaw
IPC分类号： H04N9/88 , H04N5/94 , H04N9/79 , H04N9/888
CPC分类号： H04N9/888 , H04N9/7925
摘要： An adaptive dropout compensator is fully digital and employs an adaptive logic circuit to detect dropout characteristics such as the extent thereof and the best available replacement data, and generates an adaptive logic decision for supplying the optimum replacement data. The circuit configuration lends itself to a switchable implementation for accommodating the various color television standards.
摘要翻译：自适应压差补偿器是完全数字的，并且使用自适应逻辑电路来检测诸如其程度和最佳可用替换数据之类的丢失特性，并且生成用于提供最佳替换数据的自适应逻辑判定。电路配置适用于适应各种彩色电视标准的可切换实现。

4. 发明授权

US4933784A Automatic head position tracking system for video signals recorded in a segmented format 失效
标题翻译：用于以分段格式记录的视频信号的自动头位置跟踪系统
公开(公告)号：US4933784A
公开(公告)日：1990-06-12
申请号：US265189
申请日：1988-10-31
申请人： Reginald W. Oldershaw , Robert B. Steele
发明人： Reginald W. Oldershaw , Robert B. Steele
IPC分类号： G11B5/588 , G11B5/592 , G11B15/467 , G11B21/08
CPC分类号： G11B5/588 , G11B21/086
摘要： Plural magnetic transducing heads are employed to record and reproduce video information that is stored in a segmented format. One head is in contact with the magnetic recording tape while the other head is out of contact with it. The position of the head which is in contact with the tape is controlled by a suitable ramp voltage generated in accordance with the ratio of actual tape speed to normal play speed, to maintain the head generally aligned with a track on the tape. The other head, which is out of contact with the tape, is also positioned in the same fashion. When a repositioning of the heads is required, a determination is made whether the track of information being reproduced by the head in contact with the tape relates to a particular segment of a field, for example the last field. If so, the head which is out of contact with the tape is appropriately repositioned so that it is in the proper location when it comes into contact with the tape to begin scanning the first segment associated with the next field that is being reproduced. Once the other head has come out of contact with the tape at the end of the previous field, it is repositioned to bring it to the location of the head which is now in contact with the tape.

5. 发明授权

US4037260A Tape timer error corrector circuit for tape recorder/reproducers 失效
标题翻译：磁带录像机/复制机的磁带定时器误差校正电路
公开(公告)号：US4037260A
公开(公告)日：1977-07-19
申请号：US668678
申请日：1976-03-19
申请人： Edwin S. Busby, Jr. , Reginald W. Oldershaw
发明人： Edwin S. Busby, Jr. , Reginald W. Oldershaw
IPC分类号： H04N5/7826 , G11B15/52 , G11B15/54 , G11B27/11 , G11B27/19
CPC分类号： G11B15/52 , G11B15/54
摘要： An error corrector circuit for correcting a tape timer in a video tape recorder/reproducer (VTR) having a multiple frequency control track, wherein a selected control track frequency is separated from the composite frequencies via commutating filter means capable of following frequency variations caused by variable tape speeds. The resulting filtered control track signal of selected frequency is phase compared with a tach clock signal of similar frequency obtained from the capstan tachometer. In the absence of slip, creep, tension variations, and other speed errors caused by playing the tape on different devices, there is no phase difference between the compared signals, which are thus phase locked together. Any phase deviations between the filtered control signal and the tach clock signal are detected and fed back to correct the tach clock signal so that it accurately represents the passage of tape past the VTR head means. A television frame rate pulse output derived from the corrected tach clock signal is fed to the tape timer of the VTR.
摘要翻译：一种用于校正具有多频控制轨道的磁带录像机/再现器（VTR）中的磁带计时器的误差校正电路，其中所选择的控制磁道频率通过能够跟随由变量引起的频率变化的换向滤波器装置与复合频率分离磁带速度。所得到的所选频率的滤波控制轨道信号与从主导轴转速计获得的类似频率的时钟信号进行相位比较。在没有滑动，蠕变，张力变化以及由不同装置上播放磁带引起的其他速度误差的情况下，比较信号之间没有相位差，因此相位锁定在一起。滤波后的控制信号和时钟信号之间的任何相位偏差被检测并被反馈以校正时钟信号，使得其精确地表示磁带经过VTR磁头装置的通过。从校正的时钟信号导出的电视帧速率脉冲输出被馈送到VTR的磁带计时器。

6. 发明授权

US4935827A Dynamic head position tracking control for a magnetic tape playback system 失效
标题翻译：用于磁带播放系统的动态头位置跟踪控制
公开(公告)号：US4935827A
公开(公告)日：1990-06-19
申请号：US269279
申请日：1988-11-09
申请人： Reginald W. Oldershaw , John Hutson
发明人： Reginald W. Oldershaw , John Hutson
IPC分类号： G11B5/588
CPC分类号： G11B5/588
摘要： A dynamic head position tracking control for a magnetic tape playback system employs a detected dither signal to determine the elevational position of a pair of magnetic transducing heads relative to tracks of recorded information being scanned by the heads. This detection is carried out at several locations along the lengths of the tracks being scanned, and a value is stored for each of the locations. Based upon the stored information, an estimation is made of a position value for the first location along the length of the tracks. This estimation is determined from a weighted extrapolation of the following two samples taken during the scan of the track. The elevational position of the heads is then dynamically controlled in accordance with the actual and estimated head position values.

7. 发明授权

US4814875A Digital envelope shaping apparatus 失效
标题翻译：数字信封成型设备
公开(公告)号：US4814875A
公开(公告)日：1989-03-21
申请号：US853304
申请日：1986-04-17
申请人： Reginald W. Oldershaw
发明人： Reginald W. Oldershaw
IPC分类号： H04N5/067 , H04N5/06
CPC分类号： H04N5/0675
摘要： There is disclosed herein a system for digitally forming synchronization signals. In the preferred embodiment, these synchronization signals are for substitution in place of the original synchronization signals in a television signal. These digitally generated synchronization signals are generated synchronously with the digitization of the video portions of the television signal, and the digitally generated synchronization signals are multiplexed into the stream of digital video data in the appropriate blanking intervals. The system uses a first digital signal number generator to generate a plurality of digital signals which represent the peak amplitudes of the desired synchronization signals. A second digital signal number generator synchronously generates a second plurality of digital signal values representative of the shape of the desired edges for the synchronization signal being generated. The second first and second digital signal number generators are synchronized with the clock controlling the input of the digitized video signals into the system and receive reference signals indicating when the first and second pluralities of digital signal values are to be generated and their intervals. During the appropriate blanking interval, the first and second pluralities of digital values are multiplied, and the products are output to be added to the input video signal. During times other than the blanking intervals, the incoming digitized video is multiplied by a digital gain value. The resultant stream of digital values are coupled to a digital to analog converter. The resulting analog level signal is passed through a low pass filter having specific characteristics to derive the analog television signal. There is also apparatus to allow the user to digitally adjust the sync to subcarrier phase by selecting a different one of a family of sets of digital transition edge gain control values.
摘要翻译：这里公开了一种用于数字地形成同步信号的系统。在优选实施例中，这些同步信号代替电视信号中的原始同步信号。这些数字产生的同步信号与电视信号的视频部分的数字化同步产生，并且数字产生的同步信号在适当的消隐间隔中被复用到数字视频数据流中。该系统使用第一数字信号号发生器来产生表示期望的同步信号的峰值幅度的多个数字信号。第二数字信号编号发生器同步地产生代表正在产生的同步信号的期望边缘的形状的第二多个数字信号值。第二第一和第二数字信号编号发生器与控制数字化视频信号输入到系统的时钟同步，并接收指示何时将产生第一和第二多个数字信号值及其间隔的参考信号。在适当的消隐间隔期间，将第一和第二多个数字值相乘，并将产品输出以添加到输入视频信号。在消隐间隔以外的时间段，输入的数字化视频乘以数字增益值。所得到的数字值流耦合到数模转换器。所得到的模拟电平信号通过具有特定特性的低通滤波器以导出模拟电视信号。还有一种装置，允许用户通过选择一组数字转换边增益控制值中的不同的一个数字地将同步调整到子载波相位。

8. 发明授权

US4044389A Method and apparatus for measuring the speed at which a tape was recorded 失效
标题翻译：用于测量记录带的速度的方法和装置
公开(公告)号：US4044389A
公开(公告)日：1977-08-23
申请号：US668677
申请日：1976-03-19
申请人： Reginald W. Oldershaw , Edwin S. Busby, Jr.
发明人： Reginald W. Oldershaw , Edwin S. Busby, Jr.
IPC分类号： H04N5/7826 , G05D13/62 , G11B15/087 , G11B15/52 , G11B15/54 , G11B27/10 , H04N17/06 , G11B15/46
CPC分类号： G11B15/54 , G11B15/52
摘要： A tape speed measuring circuit for use with quadruplex video recorder/reproducers, which identifies the speed at which the recording was made to allow automatically switching to the correct speed upon playback. The circuit measures the ratio of control track frequency relative to the capstan tach frequency to obtain the recorded tape speed. A commutating filter means responsive to the capstan tach signal allows the accurate extraction of the desired control track signal component at all tape speeds. Divider means counts the number of tach pulses received during a selected time period. If the number of pulses is more or less than a pre-selected quantity, a high or low logic level respectively is generated commensurate with the standard 15 or 71/2 inches/second recorded tape speed.
摘要翻译：一种用于四路录像机/复制器的磁带速度测量电路，用于识别记录的速度，以便在播放时自动切换到正确的速度。该电路测量控制轨道频率相对于主导轴频率的比率，以获得记录的磁带速度。响应于主导轴测速信号的换向滤波器装置允许在所有磁带速度下精确地提取期望的控制轨道信号分量。分频器装置计数在所选时间段内接收的脉冲数。如果脉冲数大于或小于预选数量，则分别产生与标准15或71/2英寸/秒记录磁带速度相当的高或低逻辑电平。

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