Color video tape recording/playback system
AssigneeBASF SE
InventorsWolfram Kittler, Gerhard Rotter
Life of this patent
Estimating the term…
Abstract
A color video tape recording/playback system with a magnetic tape unit and possibly a color video camera comprises at least one signal storage means, e.g. a charge-coupled device (CCD), for the intermediate storage of the video information, thus enabling the recording to be carried out with a reduced bandwidth or at a reduced tape speed and, if applicable, with a reduction of time base errors. Skip line or skip field methods are used or the grouping of several lines is exploited. The reduction of time base errors during playback is achieved by clocking out the stored signal from the charge-coupled device at the rhythm of the tape speed fluctuations in the tape recorder.
Claims16
A record/playback system for color video signals in which only every n.sup.th partial picture is sampled to obtain a picture sample signal and recorded on magnetic tape, and the recorded picture sample signals are scanned n times at clock frequency for reproduction, said system comprising:
- electronic signal storage apparatus;
- means for writing, prior to recording, every n.sup.th picture sample signal into said signal storage apparatus at clock frequency for storage therein for the duration of said picture sample signal while skipping the picture sample signals between said nth signals;
- and
- means for reading out of said storage apparatus, and recording, the stored picture sample signals, at 1/n.sup.th of the clock frequency.
A record/playback system for a color video camera in which system video signals are stored at least for the duration of a horizontal line, said video signals being part of a color video picture in which the number of lines is reduced by comparison with the number of lines of the employed color television standard, said system comprising:
- an electronic signal storage device;
- means for writing, prior to recording on magnetic tape, every nth picture sample signal into said storage device at clock frequency for storage therein at least for the duration of one horizontal line while the picture sample signals between said nth signals are skipped;
- means for reading the stored picture sample signals out of said storage device at 1/n.sup.th the clock frequency for recording;
- and
- means for reproducing the picture sample signals recorded on said tape n times in playback.
Dependencies are inferred from the claim text.