Importance

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Abstract

A player for concealing a picture or releasing picture concealment using a secret code provided by a user while recording and/or reproducing of a video signal with respect to a recording medium includes a secret code signal for generating either a first code signal used for picture concealment during a recording mode of operation or a second code signal for picture concealment release during reproducing mode of operation, a secret code signal output unit for providing the first secret code signal at a moment determined with respect to a predetermined portion of an input video signal, a picture concealing generator for inserting the first secret code signal into a vertical blanking section of the input video signal while eliminating the horizontal sync signals of a corresponding field to thereby generate and record a video signal on the recording medium. The player also includes a secret code signal detector for detecting the first secret code signal from the video signal read out from the recording medium, a code discriminator for determining whether the second secret code signal is identical to the first secret code signal detected from the recording medium, and a horizontal sync signal inserter for re-inserting the horizontal sync signals into readout video signal when the secret code signals are identical to each other. The player may be connected to a display unit. Accordingly, an unauthorized person can be prevented from viewing recorded picture information.

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First Claim