D-VHS (Digital Video Home System) is a digital enhancement of the Video Home System ( VHS ) videocassette recording ( VCR ) technology that was developed by Japan Victor Company (JVC) in 1976. D-VHS is a joint effort among JVC, Hitachi, Matsushita, and Sony (who developed Betamax VCR systems). Several cassette recorder manufacturers have expressed support for D-VHS.
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D-VHS allows for the recording and reproduction of up to four hours of digital high-definition television ( HDTV ) programming at 720 or 1080 lines per frame. Recording is possible at data speeds in excess of 28 million bits per second ( Mbps ). D-VHS is also capable of recording higher-fidelity Dolby digital sound than conventional VHS systems, which are designed only for analog recording and reproduction.
In recent years, the use of cassette tapes for video recording and reproduction has become less common because of the widespread availability and popularity of the DVD . However, some engineers believe that D-VHS may find a niche among HDTV enthusiasts, just as magnetic tape has remained viable to some extent in the computer industry.
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