Community hub
Recent from talks
Knowledge base stats:
Talk channels stats:
Members stats:
Videodisc
Videodisc (or video disc) is a general term for a laser- or stylus-readable random-access disc that contains both audio and analog video signals recorded in an analog form. Typically, it is a reference to any such media that predates the mainstream popularity of the DVD format. The first mainstream official Videodisc was the Television Electronic Disc (TED) Videodisc, and the newest is the 4K Ultra HD Blu-Ray Disc. As of September 2023, the active video disc formats are Blu-ray Disc, DVD, and in other regions because of the price difference from DVD, Video CD (VCD) and SVCD.
Georges Demeny on March 3, 1892 patented a "phonoscope", designed in 1891, that can project chronophotographic pictures on a glass disc.
Eadweard Muybridge used his zoopraxiscope to project chronophotographic pictures on a glass disc in 1893.
E & H T Anthony, a camera maker based in New York, marketed in 1898 a combination motion picture camera and projector called "The Spiral" that could capture 200 images arranged in a spiral on an 8-inch diameter glass plate. When played back at 16 frames per second, it would give a running time of 13 seconds.
Theodore Brown patented in 1907 (UK patent GB190714493) a photographic disk system of recording approximately 1,200 images in a spiral of pictures on a 10-inch disk. Played back at 16 frames per second, a disk provides around one and a quarter minutes of material. The system was marketed as the Urban Spirograph by Charles Urban, and discs were produced - but it soon disappeared.
John Logie Baird created the Phonovision system in the early 1930s, which mechanically produces about four frames per second. The system was not successful.
P.M.G. Toulon, a French inventor working at Westinghouse Electric during the 1950s and 1960s, patented a system in 1952 (US Patent 3198880) which uses a slow spinning disc with a spiral track of photographically 1.5 millimeter wide recorded frames, along with a flying spot scanner, which sweeps over them to produce a video image. This was intended to be synchronously combined with playback from a vinyl record. It appears a working system was never produced. It has similarities with the tape based Electronic Video Recording system, which was released for professional use.
Westinghouse Electric Corporation developed a system in 1965 called Phonovid, that allows for the playback of 400 stored still images, along with 40 minutes of sound. The system uses a standard record player, and builds the picture up slowly.
Hub AI
Videodisc AI simulator
(@Videodisc_simulator)
Videodisc
Videodisc (or video disc) is a general term for a laser- or stylus-readable random-access disc that contains both audio and analog video signals recorded in an analog form. Typically, it is a reference to any such media that predates the mainstream popularity of the DVD format. The first mainstream official Videodisc was the Television Electronic Disc (TED) Videodisc, and the newest is the 4K Ultra HD Blu-Ray Disc. As of September 2023, the active video disc formats are Blu-ray Disc, DVD, and in other regions because of the price difference from DVD, Video CD (VCD) and SVCD.
Georges Demeny on March 3, 1892 patented a "phonoscope", designed in 1891, that can project chronophotographic pictures on a glass disc.
Eadweard Muybridge used his zoopraxiscope to project chronophotographic pictures on a glass disc in 1893.
E & H T Anthony, a camera maker based in New York, marketed in 1898 a combination motion picture camera and projector called "The Spiral" that could capture 200 images arranged in a spiral on an 8-inch diameter glass plate. When played back at 16 frames per second, it would give a running time of 13 seconds.
Theodore Brown patented in 1907 (UK patent GB190714493) a photographic disk system of recording approximately 1,200 images in a spiral of pictures on a 10-inch disk. Played back at 16 frames per second, a disk provides around one and a quarter minutes of material. The system was marketed as the Urban Spirograph by Charles Urban, and discs were produced - but it soon disappeared.
John Logie Baird created the Phonovision system in the early 1930s, which mechanically produces about four frames per second. The system was not successful.
P.M.G. Toulon, a French inventor working at Westinghouse Electric during the 1950s and 1960s, patented a system in 1952 (US Patent 3198880) which uses a slow spinning disc with a spiral track of photographically 1.5 millimeter wide recorded frames, along with a flying spot scanner, which sweeps over them to produce a video image. This was intended to be synchronously combined with playback from a vinyl record. It appears a working system was never produced. It has similarities with the tape based Electronic Video Recording system, which was released for professional use.
Westinghouse Electric Corporation developed a system in 1965 called Phonovid, that allows for the playback of 400 stored still images, along with 40 minutes of sound. The system uses a standard record player, and builds the picture up slowly.