• 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:
    The present invention provides a novel and useful reproducing apparatus for reproducing a rotary recording medium recorded with a color video signal. Another and more specific object of the present invention is to provide a reproducing apparatus capable of reproducing any one of the NTSC disc, the PAL disc, or the SECAM disc so that a reproduced picture is obtained in a receiver of any of the three systems, that is, the NTSC system, the PAL system, or the SECAM system. According to the apparatus of the present invention, an arbitrary disc can be reproduced regardless of the color video signal system, and a reproduced picture can be obtained by an arbitrary receiver regardless of the system it uses.
    公开号:SU1210678A3
    申请号:SU823395650
    申请日:1982-02-05
    公开日:1986-02-07
    发明作者:Сугияма Хироюки
    申请人:Виктор Компани Оф Джапан,Лтд (Фирма)；
    IPC主号:
    专利说明:

    To the PAL signal modulator input and the third modulator signal input SEKDM, the output of the first adder is connected, the first output of the fourth crystal oscillator is connected to the first input of the switch, and the second output of the fourth crystal oscillator is connected via phase. The invention relates to playback devices, namely devices to form a color video signal from a video plate.
    The aim of the invention is to improve the quality of reproduction of a color video signal and versatility.
    The drawing shows a structural electrical circuit of a device for forcing a video signal.
    A device for generating a video signal contains a video signal playback unit 1, a modulator 2, a first frequency converter 3, a comb filter 4, a demodulator 5, a first crystal oscillator 6, a control unit 7, a first phase comparator 8, a horizontal synchronization signal extractor 9, a second phase comparator 10, controlled oscillator 11, first frequency divider 12, correction block 13, first adder 14, vertical synchronization block 15, second divider 16 frequencies, second frequency converter 17, block 18 holders, subtraction unit 19, third frequency converter 20, second 21, third 22, fourth 23 quartz oscillators, second 24. third 25,: fourth 26 combiners, NTSC signal modulator 27, PAL signal modulator 28, ZEKAM signal modulator 29 , phase shifter 30,
    switch 31.
    The device for forming the video signal works in the following way.
    The color video signal from the video playback unit 1 is fed to the modulator 2. From the output of the last one, the frequency modulated signal is fed to the first converter 3
    the rotator to the second input of the switch, the third input and the output of which are connected respectively to the output of the first frequency divider and the fourth input of the PAL signal modulator, and the output of the subtracter is keyed to the second inputs of the second, third, fourth adders.
    five
    0
    5 0 5 o
    five
    0
    frequencies. Such a color video signal contains a luminance signal having a band from zero to 3 MHz and a chrominance signal having a band of 2.56 MHz i ± 500 kHz within the total band. The converted signal is applied to a horizontal synchronization signal unit 9, the signal from which is supplied to the second phase comparator 10, which compares the phase of the horizontal synchronization signal and the signal received from the first frequency divider 12. The error output of the second phase comparator 10 is provided to a controlled oscillator 11 for controlling the generation frequency. The output signal from the controlled oscillator 11 is fed to the first 12 and second 16 frequency dividers.
    Said second phase comparator 10, controlled oscillator 11 and first frequency divider 12 form a phase-locked loop for controlling the frequency of the oscillator of controlled oscillator 11, designed to relatively eliminate the component of color video jitter. The output signal from the first phase comparator is also fed to the correction unit 13, from the output of which the corrected signal is fed to the video signal reproducing unit 1.
    The output signal from the controlled oscillator 11 is fed to the second frequency converter 17 through the second frequency divider 16. The output signal from the second frequency converter 17 is supplied to the first 3 and second 17 frequency converters. The output signal from the first converter 3
    the frequency is fed to a comb filter 4, a chroma signal, a frequency of 4.43 MHz, obtained by J8 comb filter 4, is fed to the demodulator on the first phase comparator 8 and the third frequency converter 20. In comb filter 4, the signal is delayed by a time interval equal to one scanning period of the horizontal RA-C system or the BECAM system; The reason why the reproduced horizontal scanning frequency is set so that the horizontal scanning frequencies of the PAL system and the SEKA M system can be obtained regardless of the video signal system recorded on the playback disc (video plate inc), and the delay time of the comb filter 4 is set equal to one horizontal sweep period in the PflU system and the 5EKAM system in accordance with the fact that a one-line delay line is provided in the PAL receiver and in the 5EKAM receiver With the help of such a device tanovits possible to obtain a normal image in the receiver system and PAS zeks in the receiver system.
    The first phase comparator 8 compares the phases of the chrominance signals from the comb filter 4 with a frequency of 4.43 MHz and a reference signal supplied from the first crystal oscillator 6 and having a frequency of 4.43 MHz
    The output voltage of the error of the first phase comparator 8 is supplied to the voltage controlled second quartz oscillator 21 to control the frequency of the latter. Accordingly, the generation frequency of the second crystal oscillator 21 fluctuates according to the jitter component present in the chroma signal received from the comb filter 4.
    A closed loop consisting of a first frequency converter 3, a second frequency converter 17, a comb filter 4, a phase comparator 10 and controlled by the voltage of the second quartz oscillator 21 forms an automatic phase compensation circuit. The residual jitter component is compressed using the correction unit 13 and an automatic circuit.

    phase compensation. The color signal received from the comb filter 4 is fed to the third frequency converter 20, from which the color signal containing the jitter component is fed to the subtraction unit 19. For temporal matching, the color video signal is fed to the second input of the subtracting unit 19 through the delay unit 18 from the modulator 2. In the subtracting unit 19, the carrier chroma signal is removed from the color video signal and only the luminance signal remains. The received signal is given respectively. On the second 24, third 25 and fourth 26 adders.
    The output signal from modulator 2 is supplied to signal extraction block 15. La synchronization vertically, the selected synchronization signal from which is fed to the first sum-Ttor 14, where it is added to the signal from the first frequency divider 12. From the output of the first adder 14, the signal is supplied to the NT5C modulator 27, the Pft L signal modulator 28, and the 5EKAM signal modulator 29, respectively. The output signal from the third crystal oscillator 22 is fed to the modulator 27 of the NT5C signal as a Color subcarrier, from the output of which a chrominance signal is fed to the second adder 24, the output of which is the artificial color video signal of the NT5C system.
    The chromaticity and luminance signals summed up in the second adder 24 are compensated for by the phase shift component, but they contain the same time-sweep fluctuation component, which is compensated for in the television receiver's automatic frequency control system, and is not included in the reproduced image color aberration.
    The output signal of the fourth crystal oscillator 23 is fed to the first input of the switch 31 directly and to the second input of the switch 31 through the phase shifter 30, and the control input of the switch 31 receives a signal from the first frequency divider 12. Thus, the switch 31 alternately for each row switches the signals from the fourth crystal oscillator 23 and the phase shifter 30, sending a commuted signal to the modulator 28 of the PAL signal, which modulates the subcluster chromaticity from the switch 31 using color difference signals from the demodulator 5. The quadrature biphasic modulated signal from modulator 28 of signal PA1 is fed to the third third matrix 25, where it is summed with the luminance signal from subtraction unit 19. Thus, the output of the third adder is colored osignal PAL system.
    The color difference signals from the demodulator 5 fed to the modulator 29 of the 5BCDDM signal are summed with the full synchronization signal from the first adder 14. The color difference signals are switched using the horizontal frequency signal within the full synchronization signal for each horizontal period and the component V.Lapshov Editor A.Shandor Tehred A. Babinets Proofreader A.Zimokosov
    Order 557/62 Circulation 624 Subscription VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Branch PPP Patent, g.Uzhgbrod, ul.Proektna, 4
    It is converted into a chroma signal. The chroma signal from the modulator 29 of the signal 5E CDM is fed to the fourth adder 26, where it is summed with the luminance signal from the subtraction unit 19. Thus, at the output of the fourth adder 26, an artificial 5ECDM signal is generated.
    The output of the first crystal oscillator 6 is fed through the control unit 7 to the video signal reproducing unit 1. In accordance with the control signal, the signal NT5C, PAL, ZEKAM is generated. If the television receiver used to reproduce the image is based on the NT5C, PAL OR 5EKDM system, then it is connected to the output of the second 24, third 25 or fourth 26 adders, respectively.
    权利要求:
    Claims (1)
    [1]
    DEVICE FOR FORMING A VIDEO SIGNAL, comprising a video signal reproducing unit, the output of which is connected through a series-connected modulator, a first frequency converter and a comb filter to a demodulator input, a first crystal oscillator, the first and second outputs of which are connected respectively to a video signal reproducing unit through a control unit and to the first input the first phase comparator, the second input of which is connected to the output of the comb filter, the output of the modulator through the signal extraction unit with horizontal synchronization is connected to the first input of the second phase comparator, to the second input of which the first output of the controlled generator is connected through the first frequency divider, the output of the second phase comparator is connected to the input of the controlled generator and to the video signal reproducing unit via the correction unit, while the modulator output is connected to the first the input of the first adder through the vertical synchronization signal extraction unit, and the output of the first frequency divider is connected to the second input of the first adder, the second the th output of the controlled generator is connected via a second frequency divider and a second frequency converter connected in series to the second input of the first frequency converter, the modulator output is connected through a delay unit to the first input of the subtraction unit, the output of the comb filter through the third frequency converter is connected to the second input, to the second input which is connected to the output of the second <in the frequency converter, the second input of which is connected to the output of the first phase comparator through the second quartz the second oscillator, characterized in that, in order to improve playback quality and versatility, the third and fourth crystal oscillators, the second, third and fourth adders, the NT5C signal modulator, the PAL signal modulator and the 5EK AM signal modulator, phase shifter and switch are introduced into it this, the first and second outputs of the demodulator are connected to the first and second inputs, respectively, of the NT5C signal modulator, PAL signal modulator, and 5EKAM signal modulator, the output of each of which is connected to the first inputs of the second, third and the fourth adder, the output of the third crystal oscillator is connected to the third input of the NTSC signal modulator, to the fourth input of which, the third SU 1210678 input of the PAL signal modulator and the third input of the signal modulator SEcDM, the output of the first adder is connected, while the first output of the fourth crystal oscillator is connected to the first input switch, and the second output of the fourth crystal oscillator is connected through a phase rotator to the second input of the switch, the third input and output of which are connected respectively to the output of the first th frequency divider and the fourth input of the PAL signal modulator, and the output of the subtraction unit is connected to the second inputs of the second, third, fourth adders.
    类似技术:
    公开号 | 公开日 | 专利标题
    KR880001930B1|1988-09-30|Colour still mode video reproducing apparatus
    US4200881A|1980-04-29|Encoding and transcoding apparatus for video disc systems
    WO1998024241A1|1998-06-04|Integrated television and video cassette recorder system
    US4573086A|1986-02-25|Color television signal converting circuit
    SU1210678A3|1986-02-07|Device for generating videosignal
    GB1537303A|1978-12-29|Method of and apparatus for manufacturing a video record
    US4567507A|1986-01-28|Color television signal conversion device
    US4312019A|1982-01-19|Phase corrected video recording system
    JP2779311B2|1998-07-23|Apparatus and method for processing low-frequency converted color signal, and apparatus and method for generating low-frequency converted color subcarrier
    US4605951A|1986-08-12|Apparatus for converting field video signals into frame video signals
    EP0558120B1|1998-09-16|System for recording and reproducing picture signals into which character signals can be inserted
    JPS60153692A|1985-08-13|Recording/reproducing system of color video signal
    US3018324A|1962-01-23|Stabilization in tape recording and reproduction
    JPS58161594A|1983-09-26|Converting circuit of color television signal
    US3585280A|1971-06-15|Gain correction apparatus for color picture information signals reproduced from a record medium
    US3946431A|1976-03-23|Synchronized demodulation of the chrominance signal with switched carrier phase angles
    US4695899A|1987-09-22|Recording and reproducing system employing balanced modulation for color video signal
    US4660071A|1987-04-21|Conversion of line sequential television color signal to simultaneous signals by alternating carrier phase injection
    CA1085043A|1980-09-02|Still color television signal recording and reproducing apparatus
    JPH0720262B2|1995-03-06|Video signal recording / reproducing device
    US4374396A|1983-02-15|Chrominance sub-carrier modifier for PAL-color television signals
    US5075781A|1991-12-24|Image signal processing device with skew-compensation effected prior to signal component separation
    JP3129108B2|2001-01-29|Video signal processing device
    JP2524521B2|1996-08-14|Magnetic recording / reproducing device
    KR960008678Y1|1996-10-07|Apparatus for separating the brightness or the chrominance signal from the color television signal
    同族专利:
    公开号 | 公开日
    DE3204083A1|1982-08-19|
    FR2499802B1|1986-12-12|
    GB2095070B|1985-04-17|
    GB2095070A|1982-09-22|
    JPS57131190A|1982-08-13|
    AT389200B|1989-10-25|
    NL8200420A|1982-09-01|
    FR2499802A1|1982-08-13|
    ATA43482A|1989-03-15|
    US4447834A|1984-05-08|
    DE3204083C2|1984-08-23|
    KR830009852A|1983-12-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5411213B2|1975-02-24|1979-05-12|
    GB1582984A|1976-08-09|1981-01-21|Rca Corp|Video signal recording systems|
    DE2636772C3|1976-08-14|1981-07-30|Blaupunkt-Werke Gmbh, 3200 Hildesheim|Method for reproducing information recorded on an optical disc on a television set|
    DE2825120C2|1976-08-14|1982-05-06|Blaupunkt-Werke Gmbh, 3200 Hildesheim|Method and circuit arrangement for playing back media recorded with color television signals|
    GB1589968A|1976-11-10|1981-05-20|Thorm Emi Ltd|Colour television|
    US4204220A|1977-06-24|1980-05-20|Rca Corporation|Dual standard video disc player|AU536777B2|1981-09-04|1984-05-24|Victor Company Of Japan Limited|Disk storage of t.d.m. digital audio and vdieo signals|
    JPS58139587A|1982-02-13|1983-08-18|Mitsubishi Electric Corp|Video reproducer|
    NL8300541A|1983-02-14|1984-09-03|Philips Nv|METHOD FOR CODING A REGISTRATION SIGNAL, REGISTRATION CARRIER PROVIDED WITH A REGISTRATION SIGNAL CODED BY THE METHOD, DEVICE FOR CARRYING OUT THE METHOD AND DISPLAYING OF THE SIGNAL REQUIRED THAT IS REASONED THAT IS NOT DONE.|
    JPS59194583A|1983-04-19|1984-11-05|Victor Co Of Japan Ltd|Picture display device|
    DE3520321C1|1985-06-07|1986-12-18|Philips Patentverwaltung Gmbh, 2000 Hamburg|Circuit arrangement for a video recorder|
    JPS61289791A|1985-06-18|1986-12-19|Sony Corp|Video/sound recording and reproducing device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP56015677A|JPS57131190A|1981-02-06|1981-02-06|Color video signal reproducing device|
    [返回顶部]