Title :
A study on the digitization of audio signal for S-VHS VCR
Author :
Takeuchi, Toshifumi ; Nakamura, Masafumi ; Amada, Nobutaka ; Hatanaka, Yuji ; Usuda, Kooei ; Arai, Takao ; Noguchi, Takaharu
Author_Institution :
Hitachi Ltd., Yokohama, Japan
fDate :
8/1/1991 12:00:00 AM
Abstract :
The recording and reproducing characteristics of the PCM (pulse code modulation) audio signal, reduction of interference to the video signal by the PCM audio signal, and performance against tracking error have been studied on a digital audio system for S-VHS VCR (video cassette recorder). A block error rate of 5×10-4 is attained without degradation of both video and FM audio signals. Amorphous heads have been used for both video and audio heads and the PCM signal carrier-to-noise ratio of 19 dB in the EP mode has been obtained without degradation of the video signal. It is confirmed that the uncorrectable error rate is under 1 symbol/second even in the case of a tracking error of -20 μm to 9 μm in the EP mode
Keywords :
interference (signal); pulse-code modulation; sound reproduction; video tape recorders; EP mode; FM; PCM audio signal; S-VHS VCR; amorphous heads; block error rate; carrier-to-noise ratio; digital audio system; interference reduction; pulse code modulation; tracking error; uncorrectable error rate; video cassette recorder; video signal; Audio recording; Degradation; Digital modulation; Digital recording; Error analysis; Magnetic heads; Modulation coding; Phase change materials; Pulse modulation; Video recording;
Journal_Title :
Consumer Electronics, IEEE Transactions on
