公开(公告)号：WO1993017421A1

公开(公告)日：1993-09-02

申请号：PCT/US1993000532

申请日：1993-01-19

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  SHIH, Lionel ,  HAGLUND, John, R.

IPC: G11B20/12

CPC classification number: G06F3/0601 ,  G06F2003/0698 ,  G11B5/0086 ,  G11B15/1875 ,  G11B15/4673 ,  G11B20/1209 ,  G11B27/032 ,  G11B27/036 ,  G11B27/107 ,  G11B27/11 ,  G11B27/3027 ,  G11B27/3036 ,  G11B27/322 ,  G11B27/328 ,  G11B27/34 ,  G11B2220/65 ,  G11B2220/90

Abstract: A helical type tape recording and reproducing system records blocks of user data of predetermined size by reformating the user data blocks into physical blocks that are recorded on tape. Each physical block is recorded as a double frame on a set of successive helical tracks, preferably 32 tracks. Each double frame has system format data interleaved with the user data. The present invention is directed to system format data that includes a sequence number for each physical block and enables the system to determine during reproducing if any physical block has been lost. The system also includes a partition access bookkeeping feature that stores information relating to locations at which searching or recording has been performed during a current load of a tape in the system, which is useful in accomplishing efficient searching for user data recorded on the tape.

Abstract translation: 螺旋式磁带记录和再现系统通过将用户数据块重新格式化为记录在磁带上的物理块来记录预定大小的用户数据块。 每个物理块被记录为一组连续螺旋轨道上的双帧，优选地为32个轨道。 每个双帧具有与用户数据交错的系统格式数据。 本发明涉及系统格式数据，该系统格式数据包括用于每个物理块的序列号，并且使系统能够在再现期间确定是否有任何物理块已经丢失。 该系统还包括分区访问簿记功能，其存储与在系统中的磁带的当前加载期间已经执行搜索或记录的位置有关的信息，这有助于实现对记录在磁带上的用户数据的有效搜索。

公开(公告)号：WO1994016234A1

公开(公告)日：1994-07-21

申请号：PCT/US1994000061

申请日：1994-01-03

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  LUBIN, John, K.

IPC: F16C35/04

CPC classification number: F16C25/083 ,  F16C27/08 ,  F16C35/04 ,  G11B5/53 ,  G11B19/20

Abstract: A method and apparatus for an axially displaced flexural bearing support assembly including a unitary or monolithic bearing support base member (40) having a bearing receiving tube (42) supported by a first and second generally parallel arrangement of flexural spoke members (43, 44) to control bearing pre-load due to axial differential expansion while eliminating radial displacement of the spindle or shaft supported within the tube. The spoke members of each arrangement include a plurality of spoke members arranged in parallel planes generally perpendicular to the axis of a spindle insertable within and supported within the tube by means of bearings. In the preferred embodiment, there are three spokes for each set in each plane, with the spokes being equiangularly displaced. To facilitate casting as a monolithic unit, one set of spokes is offset from the other by an angle half the angle between spokes, that is sixty degrees, and further, the width of the spokes is such that no spoke portion overlies any other spoke portion, as viewed from a line along the axis. The assembly also includes a generally hollow housing portion (35) having a second bearing receiving opening, the housing (35) and the base support member (40) being configured for pinning together to permit finish boring of the two coaxially aligned bearing support members at the same time to the same tolerance to ensure alignment of the centers of the openings for receiving the bearings and spindle therein. The housing is configured for receiving a scanner drive motor therein.

Abstract translation: 一种用于轴向移位的弯曲轴承支撑组件的方法和装置，其包括具有由第一和第二大致平行布置的弯曲轮辐构件（43,44）支撑的轴承接收管（42）的整体或整体式轴承支撑基座构件（40） 以控制由轴向差动膨胀引起的轴承预载，同时消除支撑在管内的主轴或轴的径向位移。 每个布置的辐条部件包括多个辐条部件，该多个辐条部件布置成大体上垂直于可插入管内并通过轴承支撑在管内的主轴的轴线的平行平面。 在优选实施例中，每个平面中每组具有三个辐条，其中辐条被等角位移。 为了便于作为整体单元的铸造，一组轮辐与轮辐之间的角度偏离角度的一半，即六十度，并且此外，轮辐的宽度使得没有轮辐部分覆盖任何其它轮辐部分 ，从轴线上看。 组件还包括具有第二轴承接收开口的大致中空的壳体部分（35），壳体（35）和基部支撑构件（40）构造成用于固定在一起以允许两个同轴对准的轴承支撑构件的精加工钻孔 同时达到相同的公差，以确保用于接收轴承和主轴的开口的中心的对准。 壳体被配置为在其中接收扫描器驱动电动机。

公开(公告)号：WO1994011991A1

公开(公告)日：1994-05-26

申请号：PCT/US1993011098

申请日：1993-11-16

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  MAGNUSSON, Steven, L. ,  MORRISON, Eric, F. ,  THOMAS, Ross, M. ,  VARIAN, George, R.

IPC: H04N05/782

CPC classification number: H04N5/9268 ,  H04N5/78266

Abstract: A magnetic tape having a selected helical track format, for use in an automatic scan tracking video tape recording and reproducing apparatus utilizing a rotary scanner assembly with a repositionable playback head, in which the audio sectors are protected in a track by placement between and in alignment with a pair of video segments, with a field of video data beginning at the start of a selected video segment of a selected track and finishing at the end of a selected video segment of a selected track, for enabling playback at a speed other than normal playback speed and enabling playback head repositioning at the end of each field in a time interval during which the head is out of contact with the tape.

Abstract translation: 一种具有选择的螺旋磁道格式的磁带，用于利用具有可重新定位的重放头的旋转扫描器组件的自动扫描跟踪磁带记录和再现装置，其中音频扇区通过放置在对准中并在对准中而被保护在轨道中 具有一对视频段，具有从所选轨道的所选视频段的开始处开始的视频数据的字段，并且在所选轨道的所选视频段的结尾处完成，以便以除正常之外的速度进行播放 播放速度，并且在磁头与磁带不接触的时间间隔内，使每个字段末尾的播放头重新定位。

公开(公告)号：WO1994010807A1

公开(公告)日：1994-05-11

申请号：PCT/US1993010630

申请日：1993-11-05

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  WESOLOWSKI, Jan, S.

IPC: H04N09/80

CPC classification number: H04N5/935 ,  H04N9/79 ,  H04N9/808

Abstract: Flywheel phasing is enabled only during times in which phasing is required and in which the synchronization information, in the form of timing reference code words in an input signal, has been processed according to a set of parameters and determined to be relatively free of noise or disturbances. The flywheel phasing is normally disabled. A phase change detector continuously monitors the phase relationship of the flywheel and the input sync and, on finding a difference, initiates a re-phasing signal. A microprocessor monitors detecting stability of the input video data and if the data is stable, it then enables the flywheel phasing for a short time, and disables it again as soon as the flywheel gets rephased, the stability detecting circuits process timing reference code words of the incoming signal to determine certain conditions, such as whether the incoming data clock is present, whether the sync information is present, or a determination of error rates in the incoming sync. The results of processing are available to the microprocessor before the new phase or re-phasing message arrives. If the error rates are sufficiently low, the phasing is enabled long enough to get the flywheel circuit phased, after which it is disabled.

Abstract translation: 仅在需要定相的时间期间使飞轮定相被使能，并且其中以输入信号中的定时参考码字的形式的同步信息已经根据一组参数被处理并被确定为相对没有噪声， 干扰。 飞轮定相通常禁用。 相变检测器连续地监视飞轮和输入同步的相位关系，并且在寻找差值时启动重定相信号。 微处理器监视检测输入视频数据的稳定性，如果数据稳定，则能够在短时间内实现飞轮定相，并且一旦飞轮重新定位就再次禁用，稳定性检测电路处理定时参考码字 输入信号以确定某些条件，例如输入数据时钟是否存在，是否存在同步信息，或确定进入同步中的错误率。 在新阶段或重新定相消息到达之前，处理结果可用于微处理器。 如果误差率足够低，则相位使能足够长以使飞轮电路相位，之后它被禁用。

公开(公告)号：WO1994010806A1

公开(公告)日：1994-05-11

申请号：PCT/US1993010627

申请日：1993-11-05

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  WESOLOWSKI, Jan, S.

IPC: H04N09/80

CPC classification number: H04N9/808 ,  H04N9/79 ,  H04N9/804

Abstract: Phase change detection enables flywheel phasing during times when phasing is required. A detected phase change between a digital input video signal and flywheeled sync signals uses an equality detector for comparing the state of a flywheel counter to the state of a phase register. Phasing of the sync flywheel circuit is accomplished by setting a flywheel counter to a predetermined number (phase word) at the time when the corresponding timing reference code, or synchronization portion of the incoming data, is detected in the digital component video signal. The result of the comparison between the flywheel counter and phase register is clocked into a latch on coincidence with a phasing pulse. If there is an inequality, a microprocessor checks the parameters of the incoming data signal to determine if the data clock is present, if the data sync is present, and if the error rates are low, and, if so re-phases the flywheel.

Abstract translation: 相变检测在需要定相的时间期间能够实现飞轮定相。 在数字输入视频信号和飞轮同步信号之间检测到的相位变化使用相等检测器来比较飞轮计数器的状态与相位寄存器的状态。 同步飞轮电路的相位通过在数字分量视频信号中检测到对应的定时参考码或输入数据的同步部分时将飞轮计数器设置为预定数量（相位字）来实现。 飞轮计数器和相位寄存器之间的比较结果与定相脉冲一致地记录到锁存器中。 如果存在不等式，则微处理器检查输入数据信号的参数，以确定数据时钟是否存在，如果存在数据同步，并且如果错误率低，并且如果这样使飞轮重新相位。

公开(公告)号：WO1994010798A1

公开(公告)日：1994-05-11

申请号：PCT/US1993010599

申请日：1993-11-05

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  WESOLOWSKI, Jan, S.

IPC: H04N05/94

CPC classification number: H04N5/945 ,  H04N5/932

Abstract: Error detection and correction of encoded timing reference (or synchronization) signals in the incoming video signal for a digital component video input interface is provided, wherein the timing reference code words in the digital component video signal include a sequence of four words, with the last binary word in the sequence of four words forming the timing reference signal carrying three bits of sync. information accompanied by four protection bits forming a seven bit Hamming code word providing the capability of detection and correction of single bit errors in the timing reference code word, as well as the capability to detect double bit errors without the capability to correct them. The timing reference code word is processed by providing a 3-bit parity checker, a 3-bit relationship checker, and a 4-bit parity checker which provide the results thereof to decision logic for error determination and kind of error. The decision logic also provides select signals which determine the value of the corrected bits which are either the sync. bits, the protection bits or their complement, or all zeroes (on a finding of a multiple bit error).

Abstract translation: 提供了用于数字分量视频输入接口的输入视频信号中的编码定时参考（或同步）信号的误差检测和校正，其中数字分量视频信号中的定时参考码字包括四个字的序列，其中最后一个 二进制字在四个字的序列中形成带有三位同步的定时参考信号。 伴随着四个保护位的信息，形成七位汉明码字，提供定时参考码字中单位错误的检测和校正能力，以及检测双位错误而无需校正它们的能力。 通过提供3位奇偶校验器，3位关系检验器和4位奇偶校验器来处理定时参考码字，其将其结果提供给用于错误确定和错误种类的判定逻辑。 判定逻辑还提供确定作为同步的校正位的值的选择信号。 位，保护位或其补码或全部零（在多位错误的发现上）。

公开(公告)号：WO1994010797A1

公开(公告)日：1994-05-11

申请号：PCT/US1993010658

申请日：1993-11-05

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  WESOLOWSKI, Jan, S.

IPC: H04N05/93

CPC classification number: H04N5/935 ,  H04N5/126 ,  H04N9/804

Abstract: The presence and stability of the input digital video signal of a digital video device, such as a digital video tape recorder system, is determined by a system control microprocessor running a program for periodically reading signals from an input data clock presence detector circuit, a circuit detecting presence of timing reference code words in the input digital video signal, and circuits measuring rates of single-bit and multiple-bit errors in the detected timing reference code words. The input signal is determined present and stable if the input data clock is present, timing reference code words are present, and if measured sync data error rates do not exceed some experimentally determined threshold values.

Abstract translation: 诸如数字录像机系统的数字视频设备的输入数字视频信号的存在和稳定性由运行用于周期性地从输入数据时钟存在检测器电路读取信号的程序的系统控制微处理器确定，电路 检测输入数字视频信号中的定时参考码字的存在，以及测量检测到的定时参考码字中的单位和多位错误率的电路。 如果存在输入数据时钟，存在定时参考码字，并且如果测量的同步数据错误率不超过某些实验确定的阈值，则输入信号被确定为存在并且是稳定的。

公开(公告)号：WO1993017432A1

公开(公告)日：1993-09-02

申请号：PCT/US1993000520

申请日：1993-01-21

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  FINCHER, Jeffrey, L. ,  HALLAMSEK, Kurt ,  KAMBIES, Keith, A.

IPC: G11B27/32

CPC classification number: G11B20/1209 ,  G11B15/1808 ,  G11B27/322 ,  G11B27/328 ,  G11B2220/90

Abstract: A helical tape recording and reproducing system which has longitudinal physical address track (174) for recording physical address data relating to the physical layout of the tape and a logical address track (172) that contains data relating to the content of the recorded helical tracks. Each address track has recorded segments with each of said segments containing data corresponding to a particular pair of helical tracks recorded in said helical recording area. Each segment has a multiple bit front field of a first predetermined timing synchronization bit pattern, a first predefined synchronizing word, a multiple bit segment information field of data, a second predefined synchronizing word and a multiple bit rear field of a second predetermined timing synchronization bit pattern.

Abstract translation: 一种螺旋带记录和再现系统，其具有用于记录与该磁带的物理布局有关的物理地址数据的纵向物理地址轨道（174）和包含与所记录的螺旋磁道的内容相关的数据的逻辑地址轨道（172）。 每个地址轨道记录了段，其中每个所述段包含对应于记录在所述螺旋记录区中的特定的一对螺旋轨道的数据。 每个段具有第一预定定时同步位模式，第一预定义同步字，数据的多位段信息字段，第二预定同步字和第二预定定时同步位的多位后场的多位前场 模式。

公开(公告)号：WO1993017424A1

公开(公告)日：1993-09-02

申请号：PCT/US1993000516

申请日：1993-01-21

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  SHIH, Lionel, C. ,  WOOD, Tracy, G.

IPC: G11B20/18

CPC classification number: G11B5/00813 ,  G11B15/04 ,  G11B20/1209 ,  G11B20/1833 ,  G11B20/1879 ,  G11B27/3027 ,  G11B27/3036 ,  G11B27/32 ,  G11B27/322 ,  G11B27/328 ,  G11B2220/90

Abstract: A tape data recording and reproducing system is disclosed which has an over-writing capability which can result in previously recorded data continuing to exist on the tape after the over-writing has been completed. The present invention uses cyclical redundancy check data that is normally recorded with the data to determine if the data recovered during reproducing is valid data.

Abstract translation: 公开了一种磁带数据记录和再现系统，其具有能够在写入完成之后先前记录的数据在磁带上继续存在的写入能力。 本发明使用通常用数据记录的循环冗余校验数据，以确定在再现期间恢复的数据是否是有效数据。

公开(公告)号：WO1993017422A1

公开(公告)日：1993-09-02

申请号：PCT/US1993000533

申请日：1993-01-19

Applicant: AMPEX SYSTEMS CORPORATION

Inventor： AMPEX SYSTEMS CORPORATION ,  SHIH, Lionel, C.

IPC: G11B20/12

CPC classification number: G11B20/10 ,  G11B5/0086 ,  G11B15/026 ,  G11B15/087 ,  G11B15/1875 ,  G11B19/02 ,  G11B20/1209 ,  G11B20/1833 ,  G11B27/032 ,  G11B27/036 ,  G11B27/107 ,  G11B27/11 ,  G11B27/3027 ,  G11B27/32 ,  G11B27/322 ,  G11B27/328 ,  G11B27/34 ,  G11B27/36 ,  G11B2220/65 ,  G11B2220/90

Abstract: A magnetic tape recording and reproducing system that has the capability of dividing the tape into a large number of separate partitions along the tape. The system defines groups of partitions of two sizes and the information relating to them is a part of system format data that is recorded with user data. The size of the partitions of each group, as well as the count of the number of partitions in each group can be specified by a host system which supplies the user data to be recorded.

Abstract translation: 具有将磁带分割成沿磁带的大量独立分区的能力的磁带记录和再现系统。 系统定义两个大小的分区组，与它们相关的信息是用用户数据记录的系统格式数据的一部分。 每个组的分区的大小以及每组中的分区数的计数可以由提供要记录的用户数据的主机系统指定。