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"Sony History". Sony. March 2005. Archived from the original on 27 September 2011. Sony.com Sony History timeline; Total Rewind, U-matic VCRs, Photos and comparison of various Sony U-matic decks; Sony U.S. patent for U-matic videotape recorder, filed 1971. Sony U.S. patent for U-matic cassette, filed 1971. U-matic Pal site Type 2 U-matic
Betamax (also known as Beta, as in its logo) is a consumer-level analog recording and cassette format of magnetic tape for video, commonly known as a video cassette recorder. It was developed by Sony and was released in Japan on May 10, 1975, [ 1 ] followed by the US in November of the same year.
Ampex created the first D-2 video machine, the ACR-225 commercial spot player [2] working with Sony, who had done some early research into composite digital video, [3] as a cost-effective solution for TV broadcasters with large investments in composite analog infrastructure such as video routers and switchers, since it could be inserted into existing analog broadcast facilities without ...
The L-size cassette can be used in both Sony and Panasonic equipment; nevertheless, they are often called DVCAM tapes. Older Sony decks would not play large cassettes with DVCPRO recordings, but newer models can play these and M-size DVCPRO cassettes. These cassettes come in lengths up to 276 minutes of DV or HDV video (or 184 minutes for DVCAM).
Its cartridges, resembling larger versions of the later VHS cassettes, used 3/4-inch (1.9 cm)-wide tape and had a maximum playing time of 60 minutes, later extended to 80 minutes. Sony also introduced two machines (the VP-1100 videocassette player and the VO-1700, also called the VO-1600 video-cassette recorder) to use the new tapes.
The very first Philips N1500 model included all the essential elements of a domestic video cassette recorder: Simple loading of cassette and simple operation using "Piano Key" controls, with full auto-stop at tape ends. A tuner for recording off-air television programmes. A clock with timer for unattended recordings.
Mangan's son, Peter, said listening the tapes was like getting “a little window into history." On one cassette, he said, it sounds like his father is in his car, reciting what he'd just been told.
Additionally, IMX ensures that each frame has the same exact size in bytes to simplify recording onto video tape. Video recorded in the IMX format is compliant with CCIR 601 specification, with eight channels of audio and timecode track. It lacks an analog audio (cue) track as the Digital Betacam, but will read it as channel 7 if used for playback.