Digital signal recording and reproducing apparatus

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium

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386 51, H04N 5782, H04N 5917

Patent

active

061155373

ABSTRACT:
In a digital signal recording and reproducing apparatus, digital input data is transmitted in a transmission packet format and is recorded in a recording packet format. In a recording stage, an auxiliary signal generator (3) generates an auxiliary signal for special reproduction in the transmission packet format, and the digital and auxiliary signals are converted into respective recording packets by means of recording signal converters (5, 6). Recording means (9, 10) performs a specific recording process on the recording packets and an identification signal for identifying between the recording packets of the digital signal and of the auxiliary signal. While in a reproducing stage, reproduction signal processing means (14, 15) performs a specific reproduction process on the reproduction signal to thereby reconstruct the recording packets and the identification signal. A packet selector (16) detects the reconstructed identification signal to determine whether the recording packet is of the digital signal or of the auxiliary signal, and then the digital signal or auxiliary signal is reconstructed by a signal reconstructor (17) in the transmission format using the selected recording packet, whereby a high quality image output conforming to the transmission format used in the normal reproductions mode is also obtained during the special reproduction modes.

REFERENCES:
patent: 5377051 (1994-12-01), Lane et al.
"An Experimental Study on a Home-Use Digital VTR", IEEE, 1989,WPM 8.6, International Conference on Consumer Electronics, Jun. 6-9, 1989.

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