Instead, the major efforts at that time late forties, early fifties were directed toward extensions of the known principles of magnetic audio recording by extrapolating those operating parameters into the region of video signals. Four such known projects were going on, the best publicized one being at the RCA laboratories in New Jersey. Under the direction of Dr. Harold Olson, a man with an excellent reputation in the field of acoustics, a team of researchers built and demonstrated a series of longitudinal, high speed VTR's that made monochrome and color pictures.
There were five tracks on the tape and a 7, foot reel ran for 4 minutes. The RCA system reduced the incoming color video signal into its RGB elements, each of which went on a separate track, as did the synchronizing information. The stationary magnetic heads of one micron gap width could handle frequencies up to 1. Clear across the country, in a well equipped lab on Sunset Blvd.
The famous singer's early relationship with the Ampex audio recorder and its rapid rise in popularity must have given him the idea that a similar breakthrough in video would be tremendously profitable. With the help of his brother who was also his business manager , they set up Crosby Enterprises and hired John Mullin to head up a group of engineers who were to pursue yet another technical approach. The basic theory was to use division multiplexing with 10 channels covering the split up of the desired video frequency range.
A bandwidth of 17 kHz per channel produced a cumulative spectrum of 1. Sync was recorded on an eleventh track to avoid the distortion effects of the band separation filters.
The Sound of Tape
By Crosby Enterprises were inviting broadcasters in to look at credible results of off air black and white recordings. There were, however, some severe picture impairments that would require much improvement before the recorder could be considered acceptable to broadcasters. After transverse video recording was introduced, the Crosby project was acquired by the 3M Company as their Mincom Division and was put to other recording tasks in the instrumentation field. The BBC also saw the potential advantage of a vision magnetic recorder, and in assigned Dr.
Peter Axon to lead a long-term effort in this direction. Many of the developments achieved in this recorder served as departure points for subsequent helical VTR's that were developed later. VERA was capable of a 3 MHz bandwidth, a significant achievement for its era in longitudinal recording. The fundamental approach was to separate the video signal into two bands: the first for all low frequencies up to kHz, the second from kHz to 3 MHz.
Low frequencies were recorded by FM techniques while the highs were applied to the tape in AM form. In playback, the two separate frequency bands were combined to produce an image good enough to put on the air in Joseph Roizen: - Here is a memorial to a man I never met, only knew by rumor, but whom I have come to respect for his contributions to video state of the art at both Ampex and IVC.
Video tape recorder
You have to check out Neil's collection of image dissector tubes!!! If you collect "vacuum tubes", "glow bottles", or other "nothing state devices", then this is the organization for you! Vacuum tubes, vacuum tube links and useful information. Join us and let's all talk about those old rotary head boat anchors that we all love hate?
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We can share all the information, documentation and web sites that we know about too. Hundreds of audio reel to reel tape recorders are documented and their backgrounds discussed. Terramedia U. Museum of Broadcast Communications - The mission of the MBC is to collect, preserve, and present historic and contemporary radio and television content as well as educate, inform, and entertain the public through archives, public programs, screenings, exhibits, publications, and ond on line access to its resources. A must visit for the serious researcher!
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Pavek Museum of Broadcasting - houses one of the world's finest collections of antique radio, television, and broadcast equipment. The Pavek has gained international recognition for its continuing efforts in preserving and documenting the history of an industry that has made monumental changes in the fabric of modern life. The Dawn of TV - The oldest video recordings recovered! Learn about the amazing restoration of several old, recently discovered Baird Phonovision Records, that had been lost for 80 years! This system worked with a mechanical stylus that was actually in physical contact with a recording disk, just like the audio phonograph!
Television Production Course! AES - The Audio Engineering Society, now in its fifth decade, is the only professional society devoted exclusively to audio technology.
daumyfdadecqui.gq Guild of Television Camera Men - The Guild of Television Cameramen GTC is a professional body whose object is to ensure and preserve the professional status of the Television Cameraman and to establish, uphold and advance the standards of qualification and competence of the Television Cameraman. IEC - The International Electromechanical Commission is the international standards and conformity assessment body for all fields of electrotechnology. IEEE - Technical objectives center on advancing the theory and practice of electrical, electronics, and computer engineering and science.
ISO - International Standards Organization - Standards are documented agreements containing technical specifications or other precise criteria to be used consistently as rules, guidelines, or definitions of characteristics, to ensure that materials, products, processes and services are fit for their purpose.
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Especially old portapacks! In addition to offering a line of state-of-the-art products, Ampex works closely with its customers to provide solutions to complex data capture requirements that may involve major modifications to an existing product or development of an entirely new product or technology. Prime Image, Inc. Plus Stereoscopic 3D Cameras and Accessories. Here it is! The source page of the previous link. Located atop Mt. These companies and individuals have developed specialized processes for restoring sticky shedding tape to playable condition.
Their engineers then digitally process the recovered recordings and transfer them to almost any format you desire, including DVD. Trust me when I tell you, restoring your own tape is hit and miss. You are more likely to destroy the tape or your irreplacable VTR than to recover it. That is why these companies have come into existence. Very rotten tape can break precious video heads or burn out the main motor of old VTRs!
Be warned! NOTE: If you have a magnetic tape restoration service and wish it to be listed here, drop me a line. Now, In no particular order We've preserved more than 60 Million minutes of film, video, and audio for archives, history centers, libraries, museums, collections, motion picture studios, and broadcast networks worldwide. Technology and Design.
Sustainability Initiatives. IR Information. Panasonic renewed its top management in February with the aim of mobilizing the company's resources to effectively deal with the economic turbulence and changing domestic and international situation. Arataro Takahashi was replaced by Masaharu Matsushita as chairman, and Toshihiko Yamashita became the new company president. Yamashita wasted no time in identifying critical areas and addressing the severest of problems. He stressed the importance of the company recovering its profitability and maintaining adequate profit margins.
His policy was to return to the foundations of the corporate division system and to make sure that the divisions maintained their profitability. At the beginning of , he strongly advocated a policy of encouraging personnel exchange. He believed that such a policy would activate the company's organizational structure, making it as tight and responsive as a drumhead. Panasonic began basic research in video technology in , commercializing its first professional and consumer models in One reason for the success of VHS was close cooperation among VHS equipment manufacturers that ensured equipment compatibility as consumer video demand began to swell.