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US 5,521,712 AGranted
Teletext signal recording and reproducing apparatus
AssigneeSony Corporation
InventorMasaki Oguro
Life of this patent
Estimating the term…
Abstract
A digital video tape recorder records a teletext signal together with a digital video signal on a magnetic tape. The teletext signal is extracted from a broadcast video signal and recorded in the form of binary data in auxiliary data areas of a video signal recording region in each recording track on the magnetic tape.
Claims10
Apparatus for recording a teletext signal, comprising:
- means for receiving a broadcast signal that includes a video portion and a teletext data signal transmitted in multiplexed fashion with said video portion, said teletext data signal including at least a teletext information code and a bit synchronizing code for providing bit synchronization to decode said teletext information code;
- video signal recording means for recording said video portion of said received broadcast signal as digital video data on a recording medium;
- first extracting means for extracting said teletext data signal from said received broadcast signal to provide extracted teletext data signal;
- second extracting means for extracting said teletext information code composed of binary data bits from said extracted teletext data signal;
- and
- teletext data recording means for recording said binary data bits of said extracted teletext information code on said recording medium but not recording said bit sychronizing code on said recording medium.
3 more elements
Apparatus for reproducing a teletext signal, comprising:
- means for reproducing a teletext signal from a recording medium on which said teletext signal was recorded with a video signal, said teletext signal having been recorded without a bit synchronizing code therein and accordingly, being reproduced without said bit synchronizing code therein;
- means for reproducing said video signal form said recording medium;
- means for adding said bit synchronizing code to the reproduced teletext signal;
- and
- means for combining said reproduced teletext signal which is added with said bit synchronizing code and said reproduced video signal to form an output video signal having said teletext signal inserted in selected lines of said output video signal.
2 more elements
Dependencies are inferred from the claim text.