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    Pulse anti coincidence methods and circuits
    1.
    发明授权
    Pulse anti coincidence methods and circuits 失效
    脉冲反巧合方法和电路

    公开(公告)号：US3922610A

    公开(公告)日：1975-11-25

    申请号：US43728474

    申请日：1974-01-28

    Applicant: BASF AG

    Inventor： BUCHAN WILLIAM A ,  ARNS HAROLD E

    IPC: H04N5/7826 ,  G05D3/12 ,  G05D13/62 ,  G11B15/467 ,  H03K19/21 ,  H03K21/02 ,  H03K5/20 ,  H03D13/00

    CPC classification number: H03K21/02

    Abstract: Methods and circuits for preventing the coincidence of reference and feedback pulses in a servo system which utilizes a phase detector incorporating an up-down counter, wherein an anticoincidence circuit assigns separate time zones in which reference and feedback output pulse can occur.

    Abstract translation: 用于防止参考和反馈脉冲重合的方法和电路，该伺服系统利用结合有升降计数器的相位检测器，其中反重合电路分配其中可以发生参考和反馈输出脉冲的单独的时区。

    ELECTRONIC TIME BASE ERROR CORRECTION METHODS AND ARRANGEMENTS
    3.
    发明专利
    ELECTRONIC TIME BASE ERROR CORRECTION METHODS AND ARRANGEMENTS 未知

    公开(公告)号：CA1115410A

    公开(公告)日：1981-12-29

    申请号：CA284055

    申请日：1977-08-04

    Applicant: BASF AG

    Inventor： AN DER HEIDEN RAINER E ,  BUCHAN WILLIAM A

    IPC: G11B20/02 ,  H04N9/89 ,  H04N9/893 ,  H04N9/12

    Abstract: An electronic time base error correction technique in which the color video signal is recorded so that in playback in at least one channel sync information is provided along with the luminance information and the color burst information along with the chrominance information. Feedback loops are provided to derive from the sync information coarse-correction of the video signal and derive from the burst information fine-correction of the video signal. The color burst extends over the entire blanking interval. Three different approaches are specifically disclosed: in the first, coarse- and fine-correction are carried out in tow tandem connected stages, respectively. In the second, coarseand fine-correction are accomplished in the same stage by means of a bi-level phase comparator. The third approach is a modification of the second approach, in which the first and second techniques have been combined.

    4.
    发明专利
    未知

    公开(公告)号：DE2742807A1

    公开(公告)日：1978-04-06

    申请号：DE2742807

    申请日：1977-09-23

    Applicant: BASF AG

    Inventor： HEIDEN RAINER AN DER ING GRAD ,  BUCHAN WILLIAM A

    IPC: G11B20/02 ,  H04N9/89 ,  H04N9/893 ,  H04N5/76

    Abstract: An electronic time base error correction technique in which the color video signal is recorded so that in playback in at least one channel sync information is provided along with the luminance information and the color burst information along with the chrominance information. Feedback loops are provided to derive from the sync information coarse-correction of the video signal and derive from the burst information fine-correction of the video signal. The color burst extends over the entire blanking interval.

    METHOD AND CIRCUIT FOR DETECTING AND COMPENSATING FOR DROP-OUT DISTORTION OF F.M. VIDEO SIGNALS
    7.
    发明专利
    METHOD AND CIRCUIT FOR DETECTING AND COMPENSATING FOR DROP-OUT DISTORTION OF F.M. VIDEO SIGNALS 未知

    公开(公告)号：CA1070009A

    公开(公告)日：1980-01-15

    申请号：CA235117

    申请日：1975-09-04

    Applicant: BASF AG

    Inventor： BUCHAN WILLIAM A

    IPC: G11B20/06 ,  H04N5/94 ,  H04N5/78

    Abstract: A circuit for use in a magnetic video tape recorder/playback system capable of detecting not only amplitude loss due to tape detects or less of head-tape contact, but also zero crossing loss due to an increase of sideband amplitude with respect to carrier amplitude in the playback signal. The circuit comprises a high speed voltage comparator coupled to a one-shot and OR gate arrangement to cause the insertion of a compensating video signal should the FM playback signal fail to have a zero crossing and pass through a threshold level within a predetermined time period.

    8.
    发明专利
    未知

    公开(公告)号：DE2538891A1

    公开(公告)日：1976-04-08

    申请号：DE2538891

    申请日：1975-09-02

    Applicant: BASF AG

    Inventor： BUCHAN WILLIAM A

    IPC: G11B20/06 ,  H04N5/94 ,  H04N5/76 ,  H04N5/795

    Abstract: A circuit for use in a magnetic video tape recorder/playback system capable of detecting not only amplitude loss due to tape defects or loss of head-tape contact, but also zero crossing loss due to an increase of sideband amplitude with respect to carrier amplitude in the playback signal. The circuit comprises a high speed voltage comparator coupled to a one-shot and OR gate arrangement to cause the insertion of a compensating video signal should the FM playback signal fail to have a zero crossing and pass through a threshold level within a predetermined time period.

    ELECTRONIC TIME BASE ERROR CORRECTION
    10.
    发明专利
    ELECTRONIC TIME BASE ERROR CORRECTION 未知

    公开(公告)号：AU509806B2

    公开(公告)日：1980-05-22

    申请号：AU2838977

    申请日：1977-08-31

    Applicant: BASF AG

    Inventor： HEIDEN RAINER AN DER ,  BUCHAN WILLIAM A ,  HEIDEN R AN DER ,  BUCHAN W A

    IPC: G11B20/02 ,  H04N9/89 ,  H04N9/893 ,  H04N5/76

    Abstract: An electronic time base error correction technique in which the color video signal is recorded so that in playback in at least one channel sync information is provided along with the luminance information and the color burst information along with the chrominance information. Feedback loops are provided to derive from the sync information coarse-correction of the video signal and derive from the burst information fine-correction of the video signal. The color burst extends over the entire blanking interval.

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