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    Alkali uranyl phosphate phosphors coactivated with rare earths
    1.
    发明授权
    Alkali uranyl phosphate phosphors coactivated with rare earths 失效
    碱性尿素磷酸盐与稀土集中

    公开(公告)号：US3586634A

    公开(公告)日：1971-06-22

    申请号：US3586634D

    申请日：1968-02-19

    申请人： GEN TELEPHONE & ELECT

    发明人： AVELLA FRANK J

    IPC分类号： C09K11/77 ,  C09K11/82 ,  C09K1/30

    CPC分类号： C09K11/771

    摘要： CONDENSED ALKALI URANYL PHOSPHATE PHOSPHORS COACTIVATED WITH RARE EARTH IONS WHEREIN THE ALKALI METALS ARE CHOSEN FROM THE GROUP LITHIUM, SODIUM, POTASSIUM, RUBID IUM AND CESIUM AND THE RARE EARTH COACTIVATORS ARE CHOSEN FROM THE GROUP EUROPIUM, SAMARIUM AND NEODYMIUM. THESE PHOSPHORS, WHEN EXCITED BY ULTRAVIOLET, ELECTRON, ION OR X-RAY RADIATION, EXHIBIT DOMINANT EMISSION COLORS WHICH MAY BE VARIED FROM GREEN TO RED THROUGH WHITE DEPENDING UPON THE COACTIVATOR SELECTD AND THE MOLAR CONCENTRATIONS. THE PHOSPHORS, MAY BE UTILIZED AS COLOR CORRECTORS FOR MERCURY LAMPS, IN CATHODE RAY TUBE SCREENS INCLUDING SCREENS FOR COLOR TELEVISION TUBES, AND IN DETECTORS FOR ION OR X-RAY BEAMS.

    Television synchronizing system using a phase controlled gyrator filter
    2.
    发明授权
    Television synchronizing system using a phase controlled gyrator filter 失效
    使用相位控制滤波器的电视同步系统

    公开(公告)号：US3575666A

    公开(公告)日：1971-04-20

    申请号：US3575666D

    申请日：1969-07-07

    申请人： GEN TELEPHONE & ELECT

    发明人： FISCHMAN MARTIN ,  MATARESE JOHN

    IPC分类号： H03H11/08 ,  H03H11/42 ,  H03L7/081 ,  H04N5/12 ,  H03B3/04 ,  H04L7/08

    CPC分类号： H04N5/126 ,  H03H11/08 ,  H03H11/42 ,  H03L7/0812

    摘要： A horizontal synchronizing system for a television receiver. The sync pulses are applied to a tuned circuit consisting of a capacitor and a gyrator-simulated inductor. The resulting signal in the tuned circuit is used to control the derivation of the horizontal sawtooth waveform. The use of a gyrator allows the entire circuit to be fabricated by integrated circuit techniques, and also minimizes the possibility of side locking or spurious synchronization at multiples of 60 Hz. off the horizontal scanning frequency by eliminating the need for the conventional horizontal oscillator. This arrangement results in a phase difference between the sawtooth waveform and the sync pulses, but this phase difference is eliminated by the provision of a phase adjust circuit. A phase detector and control circuit which changes the resonant frequency of the tuned circuit by adjusting one of the gyrator impedances minimizes spurious phase shifting and ensures a stable picture. The gyrator also operates in a second mode to provide a horizontal scan in the absence of sync pulses.

    Photoluminescent phosphors
    3.
    发明授权
    Photoluminescent phosphors 失效
    光致发光磷光体

    公开(公告)号：US3560397A

    公开(公告)日：1971-02-02

    申请号：US3560397D

    申请日：1965-09-27

    申请人： GEN TELEPHONE & ELECT

    发明人： AVELLA FRANK J

    IPC分类号： C09K11/77 ,  C09K1/44

    CPC分类号： C09K11/7708

    摘要： A FAMILY OF PHOSPHOR COMPOSITIONS HAVING THE FORMULA M2+0.5RM4+0.5VO4 WHERE M2+ IS A DIVALENT ELEMENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM, STRONTIUM, CADMIUM, AND ZINC, M4+ IS A TETRAVALENT ELEMENT SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND THORIUM AND R IS A RARE EARTH ACTIVATOR. THE PHOSPHORS EMIT RED LIGHT UNDER ULTRAVIOLET EXCITATION AND MAY BE USED FOR COLOR CORRECTION IN HIGH PRESSURE MERCURY LAMPS.