• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A quasi-vertical synchronizing signal generator is disclosed, for use with a helical scan video tape recorder (VTR) to generate a quasi-vertical synchronizing signal during a special video effects reproducing operation, which signal occurs at the same relative location during the scanning trace of the reproducing head even if the effective length of that trace varies in accordance with the special video effects then in operation. A signal is produced when the head reaches a pre-established location in the track which it is scanning, and then a delayed signal, which is delayed from the time that the head reached the pre-established location, is generated, this delayed time being selectable as a function of the particular special video effect which has been selected for operation. The delayed signal constitutes the quasi-vertical synchronizing signal. If the selected special video effect results in a longer-than-normal effective length of the scanning trace, then the quasi-vertical synchronizing signal is produced with a greater delay than if the selected special video effect results in a scanning trace of smaller-than-normal effective length.
    公开号:SU1061711A3
    申请号:SU792750751
    申请日:1979-04-05
    公开日:1983-12-15
    发明作者:Татами Мицусиге
    申请人:Сони Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the field of information storage, namely, devices for generating a quay and vertical signal synchronization of a video signal in a video recorder. A device is known for generating a quaie vertical signal synchronization signal of a video recorder containing a magnetic head mounted on a holder rotatably relative to magnetic tape and connected to the input of the playback amplifier, the output of which is connected to the input of the scan corrector connected to the output bus . The device provides the formation of a quasi-vertical signal of the synchronization of a video signal in a video recorder with relative simplicity of its design 1. A disadvantage of the known device is the considerable complexity of its maintenance. It is also known a device for generating a quasi-vertical video signal synchronization signal in a video recorder, comprising a magnetic head mounted on a holder rotatably with respect to a magnetic tape and connected to an input of a reproduction amplifier, the output of which is connected to the input of a scan corrector made from a control input and the connected output bus, and the driver for controlling the position of the magnetic head. This device allows for relative ease of maintenance 2. The disadvantage of such a device is a significant error in the formation of a quasi-vertical video signal synchronization signal in a video recorder, this is due to depositions of the reproduced signal, as well as due to the change in the speed of movement of the magnetic tape during recording compared to its speed during recording. The purpose of the invention is to reduce in error the formation of a quasi-vertical synchronization signal in the form of a signal in a video recorder. The goal is achieved in that a device for generating a quasi-vertical signal for video signal synchronization in a video recorder, containing a magnetic head mounted 0 on a holder with the possibility of rotation relative to the magnetic ribbon and connected to the input of the playback amplifier, the output of which is connected to the input of the spin corrector made A control input of the magnetic head is connected to the control input and connected to the output bus, and the driver of the control of the position of the magnetic head. Connected between the output of the signal generator control | 1 by the position of the magnetic head and the holder, made in the form of a bimorph piezoceramic plate, connected in series with a phase comparator, a lower frequency filter, a controlled oscillator, the first frequency divider and. the second frequency divider and the synchronization separator connected in series, the unit is set to its initial position, the counter, the decoder and the switch made with the control input and connected to the control input of the sweep corrector, the first frequency divider connected to the counter inputs connected to the output of the switch, the control input, which is connected to the output of the shaper of the position control signal of the magnetic head, and the output of the playback amplifier is connected to the input of the splitter with synchronization latter is present, whose output is connected to one input of the phase comparator, the other of which is connected .The inputs -k vkodu second frequency divider. The drawing shows one of the possible variants of the proposed device for generating a quasi-terminal signal of video signal synchronization in a video recorder. The proposed device comprises a magnetic head 1 mounted on a holder 2 made in the form of a bimorph piezo ceramic plate rotatably with respect to a magnetic tape not shown in the drawing. The magnetic head 1 is connected to the input of the playback amplifier 3, the output of which is connected to the input of the scanner corrector 4, made with a control input and connected to the output bus 5, The proposed device also includes a controlled sawtooth generator 6 connected between the output of the control signal generator 7 the position of the magnetic head 1 and the holder 2, the phase comparator 8 connected in series, the low-pass filter 9 controlled by the generator .10, the first AND and the second 12 frequency dividers and are turned on e, sequentially, the separator 13 of the synchronization signals, the installation block 14 to the initial position, the counter, made in the form of the first and second p counters 15 and ib, the decoder l7 and the switch 18. With etsm switch 18 is made with the control
    权利要求:
    Claims (1)
    [1]
    DEVICE; FOR FORMING SIGNAL quasivertical T SYNC tions VIDEO IN VCR, comprising a magnetic head mounted on a carrier rotatable with respect to the magnetic tape and connected ko.vhodu playback amplifier whose output is connected to the input scan corrector configured to control input and connected to the - output bus , and a shaper of the control signal for the position of the magnetic head, characterized in that, in order to reduce the error in the formation of quasi-vertical video signal synchronization signal, a sawtooth-driven controlled oscillator inserted between the output of the magnetic head position control signal shaper and a holder made in the form of a bimorph piezoceramic plate, a phase comparator, a low-pass filter, a controlled generator, a first frequency divider and a second divider frequencies And sequentially divided signal separator, reset unit, counter, decoder and switch an amplifier made with a control input and connected to the control input of the sweep corrector, the first frequency divider connected to the inputs of the counter connected to the output of the switch, the control input of which is connected to the output of the driver of the signal to control the position of the magnetic head, and the output of the playback amplifier is connected to the input of the signal splitter synchronization, the output of which is connected to one input of the phase comparator, the other input of which is connected to the output of the second frequency divider.
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    类似技术:
    公开号 | 公开日 | 专利标题
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    US4283744A|1981-08-11|Video reproducing apparatus with variable delay means
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    US4470079A|1984-09-04|Tracking control system in a magnetic recording and reproducing apparatus
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    CA1250047A|1989-02-14|Reproduced signal switching circuit for reproducingapparatus having rotary heads for specialreproduction
    US3345457A|1967-10-03|Tension control for wideband recording system
    GB2133587A|1984-07-25|Magnetic reproducing apparatus having a capstan servo circuit
    EP0091187B1|1989-06-28|Microprocessor controlled reproducing apparatus having asynchronous reproducing capability
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    同族专利:
    公开号 | 公开日
    FR2422306A1|1979-11-02|
    AU521188B2|1982-03-18|
    GB2019157B|1982-08-25|
    ATA258879A|1985-05-15|
    IT1111238B|1986-01-13|
    FR2422306B1|1984-11-23|
    BR7902096A|1979-11-27|
    JPS6219108B2|1987-04-27|
    GB2019157A|1979-10-24|
    JPS54132120A|1979-10-13|
    AT379481B|1986-01-10|
    DE2914024C2|1989-04-27|
    AU4547279A|1979-10-18|
    IT7921622D0|1979-04-05|
    US4257073A|1981-03-17|
    CA1134505A|1982-10-26|
    NL7902420A|1979-10-09|
    DE2914024A1|1979-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3384708A|1965-08-23|1968-05-21|Mvr Corp|Video preproducer switching and signal processing system|
    GB1372973A|1972-02-10|1974-11-06|Video Logic Corp|Video tape recorder systemhaving means for suppressing videotrack crossover noise during slow and fast motion operation|
    JPS524013Y2|1972-09-29|1977-01-27|
    DE2602420A1|1976-01-23|1977-07-28|Basf Ag|COLOR VIDEO RECORDING / PLAYBACK SYSTEM|
    DE2642019C2|1976-09-18|1982-06-03|Robert Bosch Gmbh, 7000 Stuttgart|Method for reproducing video signals recorded in individual tracks on a recording medium - preferably magnetic tape|
    JPS6031009B2|1976-12-02|1985-07-19|Sony Corp|
    US4203138A|1978-07-14|1980-05-13|Elenbaas William J|Video signal recording system with delayed vertical sync|JPS6231870B2|1979-07-18|1987-07-10|Sony Corp|
    JPS634387B2|1980-02-16|1988-01-28|Sony Corp|
    DE3045541C2|1980-12-03|1988-12-22|Robert Bosch Gmbh, 7000 Stuttgart, De|
    JPH0152824B2|1981-04-02|1989-11-10|Sony Corp|
    US4387407A|1981-08-27|1983-06-07|Rca Corporation|Video disc player having auxiliary vertical synchronizing generator|
    DE3232886C2|1982-09-04|1984-09-27|Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth|Method to compensate for the phase modulation of the vertical sync pulse in the additional functions of freeze frame and slow motion in video recording and / or playback devices|
    EP0311143B1|1982-09-17|1993-01-13|Ampex Corporation|Method and apparatus for producing an artificial synchronising signal|
    JPH0626039B2|1983-10-31|1994-04-06|ソニー株式会社|Displacement drive device for magnetic head|
    NL8401404A|1984-05-03|1985-12-02|Philips Nv|TELEVISION SIGNAL MEMORY ENTRY CIRCUIT.|
    JPH0570982B2|1985-06-06|1993-10-06|Victor Company Of Japan|
    JPS62269483A|1986-05-16|1987-11-21|Canon Inc|Video signal reproducing device|
    US4750054A|1986-10-06|1988-06-07|Eastman Kodak Company|Noise-impervious video timing recovery and automatic skew compensation|
    DE19548579A1|1995-12-28|1997-07-03|Thomson Brandt Gmbh|VCR with PALplus recording|
    US6078724A|1996-08-29|2000-06-20|Victor Company Of Japan, Ltd.|Magnetic reproducing apparatus of helical scan type|
    JP3789838B2|2002-03-26|2006-06-28|三洋電機株式会社|Display device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP53040726A|JPS6219108B2|1978-04-06|1978-04-06|
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