公开(公告)号：US4837624A

公开(公告)日：1989-06-06

申请号：US45693

申请日：1987-04-30

申请人： Jurgen Heitmann ,  Peter Wagner

发明人： Jurgen Heitmann ,  Peter Wagner

IPC分类号： H04N7/26 ,  H04N5/21

CPC分类号： H04N5/21

摘要： Digital video signals are subjected to band limiting by a high pass filter with a pass band terminating somewhat above half of the digital sampling frequency. The filtered signal is in effect subtracted from the original signal in an addition circuit with suitably phased inputs in order to make available a substitute signal of the interpolation low pass filtered kind. A circuit for determining the presence of an erroneous digital word accepts the high pass filtered signal, differentiates it twice and then digitally rectifies it in order to detect a possible maximum at half the sampling rate. When such a maximum is found, a changeover switch is caused to substitute the interpolation-low-pass-filtered signal for the orginal signal. Only a single digital filter is necessary for this operation. The high pass filter is a FIR filter of, for example, eleventh order and the middle coefficient is in effect changed from minus 1 to 0 when the delay equalized original signal is added to the output of the high pass filter.

摘要翻译： 数字视频信号通过高通滤波器进行频带限制，该通带滤波器的终端略高于数字采样频率的一半。 滤波后的信号实际上在具有合适的相位输入的加法电路中从原始信号中减去，以便提供内插低通滤波种的替代信号。 用于确定错误数字字的存在的电路接受高通滤波的信号，将其区分两次，然后对其进行数字整流，以便以一半采样速率检测可能的最大值。 当发现这样的最大值时，使用切换开关代替原始信号的内插低通滤波信号。 此操作只需要一个数字滤波器。 高通滤波器是例如第11级的FIR滤波器，当将延迟均衡的原始信号添加到高通滤波器的输出时，中间系数实际上从负1变为0。

公开(公告)号：US4717972A

公开(公告)日：1988-01-05

申请号：US840572

申请日：1986-01-17

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： G11B20/10 ,  G11B27/02 ,  G11B27/032 ,  G11B27/038 ,  G11B27/10 ,  H04N5/928 ,  H04N9/802 ,  H04N5/78

CPC分类号： H04N9/802 ,  G11B27/032 ,  H04N5/928 ,  G11B2220/90 ,  G11B27/10

摘要： A process for storing picture synchronous sound signals is provided. The sound signals are divided into segments for this purpose, whose cycle is equal to the cycle of the associated video signal segments. In addition to the sound data of the actual video signal segment each sound signal segment also includes one portion of the sound data of the preceding video signal segment and the subsequent video signal segment. The sound signal segments are time compressed to the length of the video signal segments for recording or transmitting. The sound signals can be softly changed over due to overlapping during backplay and cutting.

摘要翻译： PCT No.PCT / DE85 / 00212 Sec。 371日期1986年1月17日第 102（e）日期1986年1月17日PCT归档1985年6月25日PCT公布。 公开号WO86 / 00772 1986年1月30日。一种用于存储图像同步声音信号的处理。 为此，声音信号被分成多个段，其周期等于相关视频信号段的周期。 除了实际视频信号段的声音数据之外，每个声音信号段还包括前一视频信号段的声音数据和随后的视频信号段的一部分。 声音信号段被时间压缩到用于记录或发送的视频信号段的长度。 由于背景和切割过程中的重叠，声音信号可能会轻而易举地变化。

公开(公告)号：US4513328A

公开(公告)日：1985-04-23

申请号：US352009

申请日：1982-02-24

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N5/92 ,  G11B5/09 ,  H04N5/926 ,  G11B5/00 ,  G11B15/02

CPC分类号： H04N5/926

摘要： Digital data are stored on a magnetic tape at a bit rate which does not exceed the storage capabilities of the tape of about 80 Mbit/s, although received digital video signals have a bit rate of about 100 Mbit/s per channel in a two-channel system. In order to record such a bit-stream, the signals are applied to a head wheel having at least three transducer heads, and the bits are applied to the transducer heads in time-expanded form, the time-expanded signals being recompressed upon reproduction. Time compression and expansion is preferably carried out by buffer memories which have data entered and read-out in the FIFO method, at respectively different clock rates, switched under control of a control unit (24) which receives head wheel position input signal information.

摘要翻译： 数字数据以不超过约80Mbit / s的磁带的存储能力的比特率存储在磁带上，尽管接收的数字视频信号在两通道中具有每通道约100Mbit / s的比特率， 通道系统。 为了记录这样的位流，信号被施加到具有至少三个换能器头的头轮，并且这些位以时间扩展形式施加到换能器头，时间扩展信号在再现时被再压缩。 时间压缩和扩展优选地通过缓冲存储器进行，缓冲存储器在FIFO方法中以分别不同的时钟速率输入和读出数据，在接收头轮位置输入信号信息的控制单元（24）的控制下切换。

公开(公告)号：US4496974A

公开(公告)日：1985-01-29

申请号：US393775

申请日：1982-06-30

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N7/01 ,  H04N5/02

CPC分类号： H04N7/0135 ,  H04N7/0105

摘要： Digitalized television signals of an entire picture field are stored and then are read out with a cross scanning of the lines of the picture field while the next picture field is stored in the memory in the memory cells vacated by cross scanning, thus in a different sequence of memory addresses. The cross scanned digital television signals are then subjected to low-pass filtering to provide output picture point signals at the rate of twice the filter cut-off frequency. If the picture format is to be changed, a sampling rate converter then restores the original sample rate and the digital signals are stored in a second picture field store from which a second cross read-out is made. Where no change of picture format is made the number of lines in the picture is changed in accordance with the setting of the filter cut-off and the related new sampling rate. When the picture format has been changed a vertically compressed picture bordered by black or a vertically expanded picture cut off at top or bottom or both is provided. In the latter two cases a second filtering and restoration of the sample rate is done to provide the same compression or expansion in the horizontal dimension of the picture.

摘要翻译： 存储整个图像场的数字化电视信号，然后通过扫描图像场线的扫描来读出，同时下一个图像场被存储在存储器中，通过交叉扫描排出的存储器单元中，因此以不同的顺序 的内存地址。 然后对交叉扫描的数字电视信号进行低通滤波，以以两倍于滤波器截止频率的速率提供输出图像点信号。 如果要更改图像格式，则采样率转换器然后恢复原始采样率，并且将数字信号存储在从其进行第二十字读出的第二图像字段存储中。 在不改变图像格式的情况下，根据滤波器截止的设置和相关的新采样率来改变图像中的行数。 当图像格式被改变时，提供了由黑色或者在顶部或底部或两者上切断的垂直展开图像的垂直压缩图像。 在后两种情况下，进行采样率的第二次滤波和恢复，以在图像的水平维度上提供相同的压缩或扩展。

公开(公告)号：US4445135A

公开(公告)日：1984-04-24

申请号：US317421

申请日：1981-11-02

申请人： Jurgen Heitmann ,  Hans-Peter Maly

发明人： Jurgen Heitmann ,  Hans-Peter Maly

IPC分类号： H04N5/12 ,  H04N5/073 ,  H04N9/44 ,  H04N9/475 ,  H04N9/46 ,  H04N5/04

CPC分类号： H04N5/0736

摘要： A digital main store having a capacity of one field and a buffer store of much lower capacity upstream of the main store are so arranged that the buffer control controls the buffer store to compensate frequency differences between an input television signal and a reference signal. An address generator controls the main store to compensate phase differences between the two signals.

摘要翻译： 具有一个场容量的数字主存储器和在主存储器上游的低容量的缓冲器存储器被布置成使得缓冲器控制器控制缓冲存储器以补偿输入电视信号和参考信号之间的频率差。 地址发生器控制主存储器来补偿两个信号之间的相位差。

公开(公告)号：US4415938A

公开(公告)日：1983-11-15

申请号：US319786

申请日：1981-11-09

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N5/94 ,  G11B5/09 ,  G11B20/18 ,  H04N5/945 ,  G11B27/36

CPC分类号： H04N5/945 ,  G11B20/1816

摘要： To correct erroneously recorded video data, or other data which have periodically recurring gaps or intervals in the data stream, the data are applied to two channels, one channel applying the data to a recording head (2) on the tape, and immediately thereafter reproduction by a reproducing head (4); the second channels applies the data to a time delay circuit (14) which has a delay time corresponding to the time interval between recording/reproduction in the first channel. The time-delayed original data in the second channel are compared with the reproduced data in the first channel by a correlator (13), and if the comparison indicates inconsistency, the time-delayed data are stored, for example in a random excess memory (RAM) 23, and re-recorded upon recall from the RAM 23 during a recording interval or gap, as determined by a control signal applied to a transfer switch (6) in series circuit with the recording head (2). Substantial deviation between the data in the first and second channel can also be indicated by integrating an output signal from the correlator (13) representative of errors, and providing an alarm output (27, 28) if a certain alarm threshold reference is exceeded.

摘要翻译： 为了校正错误记录的视频数据或在数据流中具有周期性重复间隙或间隔的其他数据，将数据应用于两个通道，一个通道将数据施加到磁带上的记录头（2），并且立即再现 通过再现头（4）; 第二通道将数据应用于具有对应于第一通道中的记录/再现之间的时间间隔的延迟时间的时间延迟电路（14）。 第二通道中的时间延迟原始数据由相关器（13）与第一通道中的再现数据进行比较，如果比较指示不一致，则将时间延迟的数据存储在例如随机多余存储器 RAM）23，并且在通过与记录头（2）串联电路施加到转印开关（6）的控制信号确定的记录间隔或间隙期间从RAM 23调用时重新记录。 也可以通过对代表错误的相关器（13）的输出信号进行积分来指示第一和第二通道中的数据之间的明显偏差，并且如果超过某个报警阈值参考值则提供报警输出（27,28）。

公开(公告)号：US4365308A

公开(公告)日：1982-12-21

申请号：US279746

申请日：1981-07-02

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N5/262 ,  H04N9/75 ,  H03K5/08 ,  G06G7/30

CPC分类号： H04N9/75 ,  H04N5/2622

摘要： The invention concerns a method of time-correcting a digital switching signal. To derive a switching signal from a television signal in conventional analog technique, the television signal is passed through a threshold value device which provides the switching signal when the threshold value is exceeded. In digital processing, however, this can give rise to faults since the exceeding of the threshold value is not recognized until the following scanned value of the digital television signal so that the switching signal is delayed relative to its true position. To avoid this a time correction signal is formed which corresponds to the amount by which the actual switching signal is delayed relative to its true position, and this correction signal is used to produce a series of control signals which effect a progressive switching of the digital signal.

摘要翻译： 本发明涉及一种对数字切换信号进行时间校正的方法。 为了从常规模拟技术中的电视信号导出切换信号，电视信号通过阈值装置，当超过阈值时提供切换信号。 然而，在数字处理中，由于在数字电视信号的后续扫描值之后才能识别到超过阈值，因此切换信号相对于其真实位置延迟，因此可能会导致故障。 为了避免这种情况，形成对应于实际开关信号相对于其真实位置延迟的量的时间校正信号，并且该校正信号用于产生一系列控制信号，这些控制信号影响数字信号的逐行切换 。

公开(公告)号：US4298896A

公开(公告)日：1981-11-03

申请号：US8973

申请日：1979-02-02

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N5/915 ,  H04N9/87 ,  H04N5/76

CPC分类号： H04N9/87 ,  H04N5/915

摘要： The alternate line first picture field of a television picture frame is delayed for one line scan period and the delayed signals are averaged with the currently picked up signals to provide a second field of interpolated lines. Each recorded field is played twice and, for the first playing, a switch actuated at half the vertical scan frequency furnishes the delayed signals to the picture reproducing circuits, while for the second playing of the same field from the record, the averaged signals are supplied to the picture reproduction circuits. For color television signals, only the low-frequency components are processed in the foregoing manner, and the high-frequency components are separated by a frequency dividing network ahead of the delay circuit and added back to the processed low-frequency signals for provision to the picture reproducing circuits.

摘要翻译： 电视图像帧的交替行第一图像字段被延迟一行扫描周期，并且将延迟的信号与当前拾取的信号进行平均，以提供第二场插值线。 每个记录的场被播放两次，并且对于第一次播放，以垂直扫描频率的一半激活的开关将延迟的信号提供给图像再现电路，而对于来自记录的相同场的第二次播放，提供平均的信号 到图像再现电路。 对于彩色电视信号，只有低频分量以上述方式处理，并且高频分量由延迟电路之前的分频网络分离，并加回到经处理的低频信号以提供给 图像再现电路。

公开(公告)号：US4295156A

公开(公告)日：1981-10-13

申请号：US124478

申请日：1980-02-25

申请人： Michael Hausdorfer ,  Jurgen Heitmann

发明人： Michael Hausdorfer ,  Jurgen Heitmann

IPC分类号： H04N11/12 ,  H04N11/24 ,  H04N9/02

CPC分类号： H04N11/12 ,  H04N11/002

摘要： To transmit color video information from one point to another within a color television studio complex, particularly for distribution of source signals which are intended to be processed in a digital mode at another location in the studio, the information is transmitted in form of a color television signal comprising a luminance component having a given frequency range and a carrier frequency chrominance component having a frequency range outside that of the luminance component, the chrominance component simultaneously obtaining the full color information for the luminance component. The selected mode permits the ready separation of the luminance and chrominance components without perceptible quality losses, and recording and cutting processing.

摘要翻译： 为了在彩色电视演播室综合体中将彩色视频信息从一个点传输到另一个点，特别是为了分发旨在在演播室中的另一个位置以数字模式处理的源信号，该信息以彩色电视的形式发送 信号包括具有给定频率范围的亮度分量和频率范围在亮度分量之外的载波频率色度分量，色度分量同时获得用于亮度分量的全色信息。 所选择的模式允许亮度和色度分量的准备分离，而没有可察觉的质量损失，以及记录和切割处理。

公开(公告)号：US4232330A

公开(公告)日：1980-11-04

申请号：US16990

申请日：1979-03-02

申请人： Jurgen Heitmann

发明人： Jurgen Heitmann

IPC分类号： H04N9/78 ,  H04N9/535

CPC分类号： H04N9/78

摘要： A comb filter filters the luminance signal and a difference signal indicative of the difference in signal content between two sequential lines. A low-pass filter furnishes a low frequency luminance signal having only the low frequency components of the luminance signal. The low frequency signal is applied to a horizontal aperture correction circuit which furnishes substitute high frequency signals. The low frequency luminance signal and the substitute high frequency signals are applied to one input of a fade-in fade-out circuit whose other input receives the luminance signal. The ratio of signals at the output of the fade-in fade-out circuit is controlled by a correlation signal derived from the difference signal. In the digital embodiment, the fade-in fade-out circuit receives the luminance signal and the substitute high frequency signals only and the low frequency luminance signal is added to the output of the fade-in fade-out circuit. The chrominance signals are derived by synchronous detection from the difference signal.

摘要翻译： 梳状滤波器对亮度信号和指示两条连续线之间的信号内容的差异的差信号进行滤波。 低通滤波器提供仅具有亮度信号的低频分量的低频亮度信号。 低频信号被施加到提供替代高频信号的水平孔径校正电路。 低频亮度信号和替代高频信号被施加到其他输入接收亮度信号的淡入淡出电路的一个输入。 淡入淡出电路的输出端的信号比由由差信号导出的相关信号来控制。 在数字实施例中，淡入淡出电路仅接收亮度信号和替代高频信号，并将低频亮度信号添加到淡入淡出电路的输出。 色度信号通过差分信号的同步检测得出。