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288 条记录 (耗时 0.013 秒)

    Control mechanism for hand-held dictation apparatus with erasure prevention capabilities
    1.
    发明授权
    Control mechanism for hand-held dictation apparatus with erasure prevention capabilities 失效
    具有防止预防能力的手持式装置的控制机制

    公开(公告)号：US3921214A

    公开(公告)日：1975-11-18

    申请号：US36775073

    申请日：1973-06-07

    申请人： DICTAPHONE CORP

    发明人： NYFFENEGGER WILLY

    IPC分类号： G11B5/00 ,  G11B15/04 ,  G11B15/10

    CPC分类号： G11B15/10 ,  G11B5/00 ,  G11B15/04 ,  G11B2005/0002

    摘要： A control mechanism for a hand-held dictating apparatus wherein the control switches to place the apparatus in a dictate or record, playback and/or rewind mode is readily operable by one finger of the user. Two in line slide switch elements are provided, one controlling start, stop and rewind and the second controlling record and playback. The switches are functionally interrelated so that if the apparatus is in the record mode and the dictator places the apparatus in rewind to review previously recorded material, the record-playback switch is automatically placed in a playback position so that when the apparatus is again placed in the start mode previously dictated material is not inadvertently recorded over.

    Pre recorded magnetic tape editing device
    2.
    发明授权
    Pre recorded magnetic tape editing device 失效
    预先录制的磁带编辑设备

    公开(公告)号：US3722810A

    公开(公告)日：1973-03-27

    申请号：US3722810D

    申请日：1970-01-22

    申请人： DICTAPHONE CORP

    发明人： KENDALL T

    IPC分类号： G11B23/113 ,  B65H19/26 ,  B65H19/28 ,  B65H21/00

    CPC分类号： G11B23/113

    摘要： A tape editing device for use in splicing the lead end of a supply of magnetic tape on a supply reel to the free end of a leader tape on a takeup reel, which takeup reel is adapted to be rotated to draw tape from the supply reel after the splice is made. The editing device includes an enclosed buffer chamber having an open end positioned adjacent the path of travel of the magnetic tape as it is drawn from the supply reel and a splicing block, having a plurality of apertures therein, positioned in the path of travel of the magnetic tape between the buffer chamber and the takeup reel. A source of vacuum is operably connected to the buffer chamber and a magnetic pickup head control means is provided for selectively connecting the source of vacuum to the holes in the base of the splicing block in response to a prerecorded tone signal on the tape, whereby the portion of the tape passing over the splicing block, upon receipt of a tone signal by the magnetic head, is held immobile against the splicing block and excess tape, discharged from the supply reel as it is stopped, between the supply reel and the splicing block, is drawn into the buffer chamber through the open end thereof under the influence of said vacuum source.