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    Teaching and game playing machine
    1.
    发明授权
    Teaching and game playing machine 失效
    教学与游戏机

    公开(公告)号：US3629956A

    公开(公告)日：1971-12-28

    申请号：US3629956D

    申请日：1970-08-04

    Applicant: RCA CORP

    Inventor： THOMAS LUCIUS PONDER ,  MCDONALD JAMES ALEXANDER ,  JANSON EUGENE ERNST ,  CHRISTOPHER TODD J ,  PEER JOHN CHARLES

    IPC: G09B7/08

    CPC classification number: G09B7/08

    Abstract: Frames on a film may contain multiple choice questions which can be answered by selecting one of a number of answer buttons but each frame includes only a single next address code. The latter has only a small number of bits but is ambiguous in the sense that the present address on a number of frames is equal to this next address. The ambiguity is resolved by counting the frames having this common present address until the one called for by the selected answer button is reached. A second feature of the machine useful in playing games is the production of a random number in response to a user actuated button for comparison with the count of frames having a particular common present address.

    5.
    发明专利
    未知

    公开(公告)号：FR2563679A1

    公开(公告)日：1985-10-31

    申请号：FR8506355

    申请日：1985-04-25

    Applicant: RCA CORP

    Inventor： MCDONALD JAMES ALEXANDER

    IPC: H04N3/18 ,  H04N5/59

    Abstract: In a television receiver, an automatic kinescope beam current limiter circuit includes a current path between a beam current sense point and an interating capacitor across which a control voltage is developed. A threshold conduction device causes the current path to exhibit different impedance characteristics and associated response times so that the limiter circuit has the ability to respond to average beam current values, as well as to above average r.m.s. beam current values such as may be associated with peak beam current conditions.

    6.
    发明专利
    未知

    公开(公告)号：IT8520364D0

    公开(公告)日：1985-04-17

    申请号：IT2036485

    申请日：1985-04-17

    Applicant: RCA CORP

    Inventor： MCDONALD JAMES ALEXANDER

    IPC: H04N3/18 ,  H04N5/59 ,  H04N

    Abstract: In a television receiver, an automatic kinescope beam current limiter circuit includes a current path between a beam current sense point and an interating capacitor across which a control voltage is developed. A threshold conduction device causes the current path to exhibit different impedance characteristics and associated response times so that the limiter circuit has the ability to respond to average beam current values, as well as to above average r.m.s. beam current values such as may be associated with peak beam current conditions.

    Transistor Deflection Control Arrangements for Television Equipment
    9.
    发明专利
    Transistor Deflection Control Arrangements for Television Equipment 未知

    公开(公告)号：GB1157726A

    公开(公告)日：1969-07-09

    申请号：GB5687268

    申请日：1966-05-05

    Applicant: RCA CORP

    Inventor： MCDONALD JAMES ALEXANDER

    IPC: H03K4/56 ,  H03K4/71 ,  H03K6/04 ,  H04N3/223

    Abstract: 1,157,726. Transistor sawtooth circuit. RADIO CORPORATION OF AMERICA. 5 May, 1966 [14 May, 1965], No. 56872/68. Divided out of 1,159,723. Heading H3T. The subject-matter of this Specification is substantially the same as that in Specification 1,157,721, but the claims are concerned with a vertical deflection circuit for a television receiver comprising a transistor amplifier having negative feedback via a capacitor and a further negative feedback path via a double integrating circuit so as to provide S-correction.

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