Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1984-01-09
1987-02-24
McElheny, Jr., Donald
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 191, H04N 5782
Patent
active
046461728
ABSTRACT:
An audio-visual system and method for generating video information in the form of lines of alpha-numeric characters, graphical and certain forms of animation information from recordings thereof together with audio information in the form of speech, music and other sounds associated with the visual or video information. Recordings of such two forms of information are provided on a record member, such as a magnetic tape disposed in a cartridge or cassette, which tape is driven at constant speed past a plurality of pickup transducers including one which is operable to reproduce the audio recordings from a first track of the tape and a second which is operable to reproduce digital video recordings of such lines of characters, graphical and animated cartoon information. In one form, the record member is driven at constant speed while audio recordings and digital video recordings are reproduced continuously from the tape. In another form, the tape is intermittently driven past reproduction transducers under the control of a timer to intermittently generate both audio and video digital signals which signals are recorded in a buffer, such as a rotating disc or drum or other form of memory from which such signals may be repeatedly reproduced at a rate whereby they may be utilized to generate still images on the screen of a cathode ray tube and/or images composed of still picture phenomena and moving phenomena. Where the record member is intermittently operated for reproducing therefrom, digital signals are reproduced at high speed and applied to a buffer memory from which they are reproduced at a lower speed in a manner to generate sounds of words accompanying the generation of video image information.
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Markva Neil F.
McElheny Jr. Donald
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