Title :
An experimental study for a home-use digital VTR
Author :
Yamamitsu, C. ; Ide, A. ; Iketani, A. ; Juri, T. ; Kadono, S. ; Matsumi, C. ; Matsushita, K. ; Mizuki, H.
Author_Institution :
Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
fDate :
8/1/1989 12:00:00 AM
Abstract :
An experimental digital VTR system is described. A modified DCT (discrete cosine transform) has been developed for this system that needs only one-half the number of multipliers of a conventional DCT, making the hardware scale smaller. A data quantity estimator controls the variable-length coding for completion within a synchronization block, keeping the picture quality high. Three stages of error correction correct more errors and make the probability of miscorrection lower. A high area packing density of 270 Mb/in2 is brought about by the use of a low-noise head amplifier, optimized payback signal processing, high-performance magnetic heads and tapes, and a stable tracking to narrow tracks
Keywords :
digital communication systems; video tape recorders; data quantity estimator; discrete cosine transform; error correction; experimental study; home-use digital VTR; low-noise head amplifier; magnetic heads; magnetic tapes; modified DCT; multipliers; payback signal processing; picture quality; synchronization block; variable-length coding; Audio recording; Audio tapes; Bit rate; Data mining; Digital TV; Discrete cosine transforms; Electronics industry; Laboratories; Motion pictures; Video recording;
Journal_Title :
Consumer Electronics, IEEE Transactions on
