公开(公告)号：US5237461A

公开(公告)日：1993-08-17

申请号：US935480

申请日：1992-08-25

申请人： Jurgen Heitmann ,  Rolf Loos ,  Roland Mester

发明人： Jurgen Heitmann ,  Rolf Loos ,  Roland Mester

IPC分类号： H04N5/937

CPC分类号： H04N5/937

摘要： As many as three of the four heads spaced at 90.degree. intervals around the periphery of a head wheel may be in contact with the magnetic tape of a video recorder and reproducer at the same time. Oblique tracks are recorded on the tape record video date in blocks corresponding to sectors, each composed of the same numbers of lines, each track beginning with a video sector and ending with another video sector with small audio blocks inbetween. Four different sector designations succeed each other in turn. The video data of each block is preceded by an identification signal of which the two most significant bits designate the sector. The sector designations are separated from the outputs of each of the magnetic heads and control a PROM, the output of which controls a crosspoint switch to direct data blocks in accordance with the sector identification to four memories and the audio blocks to an audio memory. When reproduction is performed at a speed faster or slower than the recording speed, the control data for the switch normally still has enough redundance for correct switching but when the control data becomes inconsistent with the track pattern, an error is detected and the previous setting of the switch is preserved. Errors can be reduced by taking into account head wheel pulses on the tape or data from a longitudinal track on the tape.

摘要翻译： 在围绕头轮的周边以90度间隔分开的四个头部中的多达三个可以同时与录像机和再现器的磁带接触。 倾斜轨道以对应于扇区的块记录在磁带录像视频日期上，每个扇区由相同数量的行组成，每个轨道以视频扇区开头，并以其间具有小音频块的另一个视频扇区结束。 四个不同的部门名称依次相继成功。 每个块的视频数据之前是两个最高有效位指定扇区的识别信号。 扇区指定与每个磁头的输出分开，并控制PROM，其输出控制交叉点开关，以根据扇区标识将数据块指向四个存储器，并将音频块传送到音频存储器。 当以比记录速度更快或更慢的速度执行再现时，开关的控制数据通常仍然具有足够的冗余以用于正确的切换，但是当控制数据与轨迹图案不一致时，检测到错误并且先前设置 保护开关。 可以通过考虑磁带上的前轮脉冲或磁带上的纵向轨道的数据来减少错误。

公开(公告)号：US4905099A

公开(公告)日：1990-02-27

申请号：US201484

申请日：1988-06-01

申请人： Roland Mester ,  Jurgen Heitmann ,  Rolf Loos ,  Jurgen Muller

发明人： Roland Mester ,  Jurgen Heitmann ,  Rolf Loos ,  Jurgen Muller

IPC分类号： H04N5/907 ,  G11B20/10 ,  H04N9/877 ,  H04N9/896

CPC分类号： H04N9/896 ,  H04N9/877

摘要： Four picture field memories which contain storage places for luminance data, chrominance data, error flags and write flags are switchable from write in to read out by changeover switches controlled by an access control unit for connection of the address and control inputs of the memories either to a write in control circuit or a read out control circuit. The access control unit can be set for operation at normal speed, which is the recording speed of the tape from which signals are read out, below normal speed or above normal speed. The read-out control circuit is synchronized by a synchronizing signal that contains a vertical scan frequency reference pulse. The several picture field memories are cyclically interchanged, written into and read out from. One of the picture field memories is read out while the others are available for write-in. The incoming error flags are passed on. Use is made of write flags and error flags to improve operation at speeds different from the recording speed.

摘要翻译： 包含用于亮度数据，色度数据，错误标志和写入标志的存储位置的四个图像场存储器可从写入切换到由访问控制单元控制的转换开关读出，用于将存储器的地址和控制输入连接到 写入控制电路或读出控制电路。 访问控制单元可以设置为以正常速度操作，即从其读出信号，低于正常速度或高于正常速度的带的记录速度。 读出控制电路由包含垂直扫描频率参考脉冲的同步信号同步。 这些几个画面存储器被循环地交换，写入和读出。 读出其中一个画面存储器，而其他画面存储器可用于写入。 传入的错误标志被传递。 使用写入标志和错误标志来改善与录制速度不同的速度下的操作。

公开(公告)号：US4931885A

公开(公告)日：1990-06-05

申请号：US198135

申请日：1988-05-24

申请人： Roland Mester ,  Rolf Loos ,  Jurgen Heitmann ,  Jurgen Muller

发明人： Roland Mester ,  Rolf Loos ,  Jurgen Heitmann ,  Jurgen Muller

IPC分类号： G11B27/10 ,  G11B27/30 ,  G11B27/32

CPC分类号： G11B27/107 ,  G11B27/3027 ,  G11B27/322 ,  G11B2220/90

摘要： Data blocks recorded on oblique tracks on magnetic tape are preceded by synhronizing signals and block identification signals. The serial data identification signals are converted to 8-bit parallel form and then are split between an undelayed channel and a channel delayed by one data block. Under control of a sync detector the parallel data are made to correspond with data words and are then decoded for comparison of the block numbers. Since the block numbering is consecutive, the delayed decoded block number is incremented by one for comparison. When a positive comparison is obtained the block number of the delayed decoded signals is made available to identify the data block. A counter in a so called fly wheel circuit assures provision of a new block start signal if a synchronizing signal is missed and prevents the timing of the circuit from being put off by a false detection of a synchronizing signal. A block identification output appears only if its block number is in sequence.

摘要翻译： 记录在磁带上的倾斜轨道上的数据块之前是同步信号和块识别信号。 将串行数据识别信号转换为8位并行形式，然后在未延迟的通道和延迟一个数据块的通道之间进行分割。 在同步检测器的控制下，使并行数据与数据字相对应，然后被解码以便比较块号。 由于块编号是连续的，所以延迟解码块号被增加1以进行比较。 当获得正比较时，延迟解码信号的块号可用于识别数据块。 在所谓的飞轮电路中的计数器确保提供新的块起始信号，如果错过同步信号，并且防止电路的定时被同步信号的错误检测所推迟。 块标识输出仅在其块号顺序显示时才会出现。

公开(公告)号：US4926425A

公开(公告)日：1990-05-15

申请号：US204622

申请日：1988-06-09

申请人： Rolf Hedtke ,  Rolf Loos ,  Roland Mester ,  Jurgen Hansel

发明人： Rolf Hedtke ,  Rolf Loos ,  Roland Mester ,  Jurgen Hansel

IPC分类号： G01R31/317 ,  G01R31/28 ,  G06F11/22 ,  G06F11/267

CPC分类号： G06F11/221

摘要： Test node equipment is provided between successive component groups operating in cascade and each test node is connected to a data bus system through which test patterns can be provided by a test pattern generator and from which signals can be evaluated by a test pattern analyzer, the test pattern generator and the test pattern analyzer being under control of a test computer. Each test node has a state in which the output of the preceding component group passes through it to the next component group with only a possibility of monitoring possible deficiencies by the test computer and other states in which the cascade operation of component groups can be interrupted at a test node for inserting a test pattern to a following component group or receiving a processed test pattern from a preceding component group. A test node may also contain driver circuits for transfer of rapid data to a memory of the test computer for subsequent processing at a lower speed and may also contain equipment to assist in the use of a so-called signature analysis system.

摘要翻译： 在连续的级联组件组之间提供测试节点设备，每个测试节点连接到数据总线系统，测试模式发生器可以通过该数据总线系统提供测试模式，并通过测试模式分析仪从中可以评估哪些信号，测试 模式发生器和测试模式分析仪在测试计算机的控制下。 每个测试节点具有这样的状态，其中前一组件组的输出通过它到下一个组件组，只有可能监视测试计算机和组件组的级联操作可能被中断的其他状态的可能性 用于将测试模式插入到后续组件组或从前一组件组接收经处理的测试模式的测试节点。 测试节点还可以包含用于将快速数据传送到测试计算机的存储器的驱动器电路，用于以较低速度进行后续处理，并且还可以包含有助于使用所谓的签名分析系统的设备。

公开(公告)号：US4907181A

公开(公告)日：1990-03-06

申请号：US204194

申请日：1988-06-08

申请人： Rolf Hedtke ,  Rolf Loos ,  Roland Mester ,  Jurgen Hansel

发明人： Rolf Hedtke ,  Rolf Loos ,  Roland Mester ,  Jurgen Hansel

IPC分类号： G11B20/18 ,  H04N17/06

CPC分类号： H04N17/06

摘要： A system for testing and/or monitoring a digital videotape apparatus makes use of the presence several identically equipped recording and reproducing channels to detect or test for errors by comparing the treatment of the same data in two or more channels. Comparisons are made at test nodes between reference "signatures" and actual "signatures" in normal operation or in test operation. Syndrome units are used to test or monitor circuits for protection against errors and for error correction. The monitoring and testing is done in a system which connects a microcomputer to test nodes of the equipment to be tested or monitored over a test bus.

摘要翻译： 用于测试和/或监视数字录像带设备的系统通过比较两个或更多个信道中的相同数据的处理，利用存在几个相同装备的记录和再现信道来检测或测试错误。 在正常操作或测试操作中，参考“签名”和实际“签名”之间的测试节点进行比较。 综合征单位用于测试或监测电路以防止错误和纠错。 监视和测试是在将微型计算机连接到通过测试总线进行测试或监视的设备的测试节点的系统中进行的。

公开(公告)号：US4939605A

公开(公告)日：1990-07-03

申请号：US286317

申请日：1988-12-19

申请人： Jurgen Heitmann ,  Rolf Loos ,  Hannfried Preissler

发明人： Jurgen Heitmann ,  Rolf Loos ,  Hannfried Preissler

IPC分类号： G11B5/09 ,  G11B5/008 ,  G11B5/53 ,  G11B15/14 ,  G11B27/032 ,  G11B27/036 ,  G11B27/32 ,  H04N5/7826

CPC分类号： H04N5/78266 ,  G11B15/14 ,  G11B27/032 ,  G11B27/036 ,  G11B27/322 ,  G11B5/0086 ,  G11B5/531 ,  G11B2220/90

摘要： The head wheel of a video recorder-reproducer is equipped with a set of four advanced read heads, in addition to the usual sets of four read and write heads, so that each advanced read head can read the contents of an oblique track on a magnetic tape on which one of the write heads will be able to record thereafter and which will be read still later by one of the normal read heads. The advanced read heads are so located that while one of them is reading a track, one of the normal read heads is out of contact with the tape. The advanced read heads are used for reading out audio sections of video tape tracks for processing and rerecording in accordance with a previously known processing procedure used in editing newly recorded video tapes for better audio recording. The normal read heads are available for an after-check of the rerecorded audio. A switching system timed by the rotation of the head wheel disconnects each of the normal read heads in a sequence during the periods in which they are respectively out of contact with the tape and at the same time the switches in one of the advanced read heads for scanning the mid-portion of the recorded tracks where the audio sections of the recording are located.

摘要翻译： 视频记录器 - 再现器的头轮除了通常设置的四个读写头之外还配备有一组四个高级读取头，使得每个高级读取头可以读取磁性的倾斜轨道的内容 其中一个写入头将能够在其上记录的磁带，并且稍后将由正常的读取头之一读取。 先进的读取头是如此的位置，当其中一个正在读取轨道时，其中一个正常的读取头与磁带不接触。 高级读取头用于根据用于编辑新记录的录像带以用于更好的音频记录的先前已知的处理程序来读出视频磁带的音频部分进行处理和重新录制。 正常的读取头可用于重新录制的音频的检查。 通过头轮的旋转定时的切换系统在它们分别与带不接触的时段期间以一系列顺序断开每个正常读头，并且同时在其中一个高级读取头中的开关 扫描记录的音频部分所在的记录的轨道的中间部分。

公开(公告)号：US4849994A

公开(公告)日：1989-07-18

申请号：US894304

申请日：1986-08-07

申请人： Jurgen Heitmann ,  Rolf Loos

发明人： Jurgen Heitmann ,  Rolf Loos

IPC分类号： G11B20/12 ,  G11B20/14 ,  G11B27/30 ,  H04L7/08

CPC分类号： H04L7/08 ,  G11B20/12 ,  G11B20/1426 ,  G11B27/3027 ,  H04L7/0008

摘要： For transmission of serial digitally coded signals over a path having a high-pass frequency characteristic synchronizing signals are transmitted in synchronizing word pairs at the beginning of each data block in which the synchronizing words are either identical or else both have the same number of bits of each of the two binary logic levels, for reduction of d.c. and low-frequency components while permitting the choice of a synchronizing signal word which occurs at most rarely in a television video signal, for example.

摘要翻译： 为了在具有高通频率特性的路径上发送串行数字编码信号，在每个数据块的开始处以同步字对中的同步字对发送同步信号，其中同步字是相同的，或者两者具有相同的位数 两个二进制逻辑电平中的每一个，用于减少直流 和低频分量，同时允许选择在电视视频信号中最少发生的同步信号字。

公开(公告)号：US4578719A

公开(公告)日：1986-03-25

申请号：US679035

申请日：1984-12-06

申请人： Jurgen Heitmann ,  Rolf Loos ,  Peter Wagner

发明人： Jurgen Heitmann ,  Rolf Loos ,  Peter Wagner

IPC分类号： G11B5/588 ,  G11B27/36 ,  G11B21/10

CPC分类号： G11B5/588

摘要： A conventional multiple recognition unit provides a multiple error signal whenever digitally coded television signals supplied in successive data blocks to the error recognition unit finds by reference to check-words that the error correction capabilities of the unit are exceeded in any data block. In order to determine when such multiple errors are related to faulty tracking, the multiple error signals are prolonged in duration, overlaps between the multiple error signal and a preceding prolonged signal are detected, and the latter are then integrated. The level of the integrated signal determines the likelihood or presence of tracking error.

摘要翻译： 传统的多重识别单元，只要在连续的数据块中提供的数字编码的电视信号到错误识别单元通过参考检查词来查找在任何数据块中超过了单元的纠错能力，就提供多个误差信号。 为了确定这样的多个误差何时与故障跟踪相关，多个误差信号在持续时间上延长，检测到多个误差信号与先前的延迟信号之间的重叠，然后将后一个积分。 积分信号的电平决定了跟踪误差的可能性或存在。

公开(公告)号：US4894070A

公开(公告)日：1990-01-16

申请号：US269826

申请日：1988-11-10

申请人： Wolfram Keidel ,  Wilhelm Barlag ,  Rolf Loos

发明人： Wolfram Keidel ,  Wilhelm Barlag ,  Rolf Loos

IPC分类号： B01D39/20 ,  B01D46/24 ,  F16L13/10

CPC分类号： B01D46/2407 ,  B01D39/2086 ,  F16L13/103

摘要： An elongate tubular porous ceramic filter for use in the filtration of fluid media, e.g. the filtration of particulate matter from hot gases, is formed from a plurality of shorter tubular portions (10, 11, 12, 13, 14, 15, 20, 21) adhered together by a high-temperature adhesive at bonding points (30, 31) to provide long filter tubes.

公开(公告)号：US5004545A

公开(公告)日：1991-04-02

申请号：US544945

申请日：1990-06-28

申请人： Hans-Peter Wahl ,  Rudolf Schlueter ,  Wolfgang P. Kaettlitz ,  Rolf Loos

发明人： Hans-Peter Wahl ,  Rudolf Schlueter ,  Wolfgang P. Kaettlitz ,  Rolf Loos

IPC分类号： B01D29/01 ,  B01D39/20 ,  B22C9/08 ,  B22D43/00

CPC分类号： B01D39/2093 ,  B22C9/086

摘要： A filter for use in the filtration of molten metals comprises a ceramic foam having a gasket made from fibrous material surrounding its peripheral surface and a metallic foil, such as aluminum foil, fixed to the gasket, for example by means of an adhesive, around the outer peripheral surface of the gasket.