Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Performance limitations of data-reduced HDTV magnetic tape recording systems

: Kauff, P.; Fechter, F.

Fernseh- + Kino-Technik : FKT 47 (1993), Nr.12, S.749-56
ISSN: 0015-0142
Fraunhofer HHI ()
codecs; data compression; discrete cosine transforms; high definition television; magnetic recording; video recording; dct codecs; magnetic tape recording; HDTV studios; discrete cosine transform; digital video recording; data reduction systems; spectral analysis; variable length coding; multiple copying; subjective tests; chromakey tests

Discusses magnetic tape recording for HDTV studios and describes DCT (discrete cosine transform) codecs for digital video recording. Block diagrams of data reduction systems are presented, and the use of spectral analysis ahead of variable length coding is described. Advantages are suggested over normal PCM and results of multiple copying are reported, showing both subjective tests and chromakey tests. Data compression by a factor of 2 to 3 yields acceptable quality.