Title :
Channel investigations of a helical-scan digital video recorder at normal and trick-mode playback
Author :
Wong, C. ; Denissen, A.J.M.
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
Abstract :
Based on a modified 8 mm mechanism using Metal-Evaporated tapes and special heads which provide a track width of 10 μm, we have realised a recording channel with a raw bit rate of 72 Mb/s suitable for recording of compressed HDTV signals. The recorder employs a 24-25 code with embedded tracking tones for channel coding and Reed-Solomon product codes for error-correction coding. For full utilization of the available error-correction coding in trick modes, studies have been made on the signal behaviour in such situations. Through the use of a PC-controlled error-statistics measurement system we are able to evaluate the real-time performance of the recording channel
Keywords :
Reed-Solomon codes; automatic test equipment; channel coding; digital magnetic recording; error correction codes; magnetic heads; video recording; video signals; video tape recorders; 10 micron; 24-25 code; 72 Mbit/s; 8 mm; PC-controlled system; Reed-Solomon product codes; bit rate; channel coding; compressed HDTV signals recording; embedded tracking tones; error correction coding; error-statistics measurement system; helical-scan digital video recorder; magnetic heads; metal-evaporated tapes; normal mode playback; real-time performance; recording channel; signal behaviour; trick-mode playback;
Conference_Titel :
Storage and Recording Systems, 1994., International Conference on
Conference_Location :
Keele
Print_ISBN :
0-85296-630-X
DOI :
10.1049/cp:19941122
