Dynamic magnetic information storage or retrieval – Splitting one information signal for recording on plural...
Patent
1991-04-19
1993-11-30
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
Splitting one information signal for recording on plural...
360 30, 358337, G11B 502
Patent
active
052670937
ABSTRACT:
A video recorder for recording and reproducing video signals having a bandwidth with a limited upper transmission frequency, including HDTV signals. A recording signal processing circuit (14) with a first scanning circuit (10.1) for scanning the video signal to be recorded with first scanning recording pulses of a first scanning frequency that is at least equal to the limited upper transmission frequency, for providing the first recording signal (AS1), and a second scanning circuit (10.2) for scanning the video signal to be recorded with second scanning recording pulses that are displaced through half a cycle with respect to the first scanning pulses of the first scanning circuit (10.1), and having a second scanning frequency equal to the first scanning frequency, for providing the second recording signal (AS2). A recording/playback circuit (15, 16) includes recording-reproducing heads (11.1, 11.2) in close proximity to each other, for recording two recording signals (AS1, AS2) on two adjacent tracks of a magnetic tape (12), and for reading playback signals (LS1, LS2). The playback signal generating device (17 ) has a playback scanning switch (13) for alternately and successively scanning the playback signals (LS1, LS2) with playback scanning pulses, the switch (13) having a scanning frequency with pulses repeating at twice the first scanning frequency, for providing a composite playback video signal having the limited upper transmission frequency.
REFERENCES:
patent: 4388656 (1983-06-01), Lemke
patent: 4847701 (1989-07-01), Suesada
patent: 4941055 (1990-07-01), Fujimoto
patent: 4963991 (1990-10-01), Honjo
patent: 5038219 (1991-08-01), Yamashita et al.
Patent Abstract of Japan vol. 9 No. 305 Dec. 1985 Recording and Reproducing Device of Video Signal, Matsuo.
Jamamitsu, C.; et al.: An Experimental Digital UTR Capable of 12-hour Recording. In: IEEE Transactions on Consumer Electronics, vol. CE-33, No. 3 Aug. 1987, S. 240-248.
Papoulis, Athanasios: Generalizes Sampling Expansion. In: IEEE Transactions on Circuits and Systems, vol. CAS-24 No. 11, Nov. 1977, S. 652-654.
Nokia Unterhaltungselektronik GmbH
Sniezek Andrew L.
LandOfFree
Video recorder having phase-displaced video recording channels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video recorder having phase-displaced video recording channels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video recorder having phase-displaced video recording channels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2101598