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Pictorial information retrieval system

  • US 4,028,733 A
  • Filed: 07/07/1975
  • Issued: 06/07/1977
  • Est. Priority Date: 07/07/1975
  • Status: Expired due to Term
First Claim
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1. A system for retrievably providing a video display of an information message on a video display means, said system comprising:

  • a video tape storage media having a plurality of said video displayable messages storable thereon, said video tape storage media having a first audio track having identification information stored therein and a video track having video information stored therein, said video information comprising a plurality of video displayable frames, each of said frames being capable of providing a video signal containing the video displayable information within said frame and comprising a plurality of frame segments, each of said frame segments containing one of said video displayable messages and being capable of providing a portion of said frame video signal containing said one message, said first audio track identification information comprising a plurality of different unique frame identification codes, each frame code being uniquely associated with one frame of said plurality of frames, each of said frame video signals further comprising a plurality of horizontal sync pulses for the video display of said frame video signal, each of said sync pulses being associated with a displayable video scan line, each of said frame segment video signal portions of said frame video signal comprising a predetermined portion of the plurality of displayable video scan lines associated with said frame video display having a corresponding predetermined portion of said plurality of horizontal sync pulses;

    means for selecting a unique video displayable message for video display thereof, said selection means providing a unique selection control signal uniquely corresponding to said selected message;

    means for scanning said storage media in response to said selection control signal for initiating selection of said unique video displayable message, said scanning means comprising means for subsequently providing said video display from said storage media and means responsive to said first audio track frame identification information for providing a frame location signal;

    first condition responsive means operatively connected to said scanning means for retrieving the frame containing said selected message in response to detection of the frame location signal associated with said frame containing said selected message and for counting the horizontal sync pulses in said retrieved frame for providing a display control signal for retrieving said frame segment containing said selected message in response to detection of the count associated with said selected message containing segment; and

    mask generator means operatively connected to said first condition responsive means for providing a composite video displayable output signal to said video display means, said mask generator means providing said single frame segment containing said selected message as said output signal in response to receipt of said display control signal and blanking said entire frame in the absence of receipt of said display control signal;

    whereby the audio track of a video tape storage media enables a single frame segment to be selectively retrieved from a plurality of frames of video information stored in the video track of said video tape storage media for video display of said frame segment.

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