Sony HDVS

Logotipo de HDVS

Videocámara Sony con el logotipo HDVS.

Sony HDVS ( High-Definition Video System ) es una gama de equipos de vídeo de alta definición desarrollados en la década de 1980 para dar soporte al estándar japonés Hi-Vision , ^{[ 1 ]} un sistema de televisión analógica de alta definición de los primeros tiempos . La gama incluía cámaras de vídeo profesionales , monitores de vídeo y sistemas de edición de vídeo lineal .

Sony presentó por primera vez una videocámara, un monitor y una grabadora de vídeo (VTR) analógicos de banda ancha con capacidad HDTV en abril de 1981, en una reunión internacional de ingenieros de televisión celebrada en Argel , Argelia .

La gama HDVS se lanzó en abril de 1984 con la cámara HDC-100, la primera cámara HDTV disponible comercialmente en el mundo, y la grabadora de vídeo HDV-1000, junto con su procesador/TBC HDT-1000 y el conmutador de vídeo HDS-1000, todos funcionando en formato de vídeo por componentes de 1125 líneas con vídeo entrelazado y una relación de aspecto de 5:3 . El primer sistema, compuesto por un monitor, una cámara y una grabadora de vídeo, fue vendido por Sony en 1985 por 1,5 millones de dólares, y el primer estudio de producción HDTV, Captain Video, abrió sus puertas en París. ^{[ 2 ]}

The helical scan VTR (the HDV-100) used magnetic tape similar to 1" type C videotape for analog recording. Sony in 1988^[3][4] unveiled a new HDVS digital line, including a reel-to-reel digital recording VTR (the HDD-1000) that used digital signals between the machines for dubbing but the primary I/O remained analog signals. The Sony HDVS HDC-300 camera was also introduced. The large HDD-1000 unit was housed in a 1-inch reel-to-reel transport, and because of the high tape speed needed, had a limit of 1-hour per reel. By this time, the aspect ratio of the system had been changed to 16:9.^[5] Sony, owner of Columbia Pictures/Tri-Star, would start to archive feature films on this format, requiring an average of two reels per movie. There was also a portable videocassette recorder (the HDV-10) for the HDVS system, using the "UniHi" format of videocassette using 1/2" wide tape.^[6] The tape housing is similar in appearance to Sony's D1/D2 Standard Definition Digital VTRs, but recorded analog HD. The small cassette size limited recording time to about 63 min.

The price of the HDD-1000 and its required companion HDDP-1000 video processor in 1988 was US$600,000. The metal evaporate tape (tape whose magnetic material was evaporated and deposited onto the tape in a vacuum chamber using physical vapor deposition) cost US$2500.00 per hour of tape and each reel weighed nearly 10 pounds.^[7] The high price of the system limited its adoption severely, selling just several dozen systems and making its adoption largely limited to medical, aerospace engineering, and animation applications. In 1986, HDVS systems cost $1.5 million, and 30-40 were sold until then. Sony HDVS systems made video with a total of 1125 (horizontal) lines, and 1035 active lines of resolution.^[8][9][10]

The Sony HDL-5800 had a price of over 56,000 US dollars^[11][12]

The Sony HDVS system was used in the production of a short film about Halley's Comet in 1986, titled "Arrival", which was shown in US theatres later that year after being transferred to 35mm film.^[13][14]

The first drama film shot using the HDVS professional video camera was RAI's Julia and Julia (Italian: Giulia e Giulia) in 1987, and the first HDTV television show was CBC's Chasing Rainbows, shot using the HDVS system in 1988. For the GenesisInvisible Touch Tour shows at Wembley Stadium in July 1987, the Sony HDVS system was used to film these shows, which were later released on VHS and LaserDisc in 1988 and DVD in 2003.

Montreux Jazz Festival in 1991 was recorded using the Sony HDVS video system. Four HDC-300 cameras in 1125-line format (1035i visible, close to 1080i today), 60 fps, and one Sony HDC-500 3 CCD prototype HDVS camera were used. The five cameras were connected to a 7-input HDS-1000T switcher and the live mix was recorded to an HDD-1000 Digital 1" VTR.^[15]

World War II: When Lions Roared (also known as Then There Were Giants) is a 1994 TV movie, directed by Joseph Sargent, that stars John Lithgow, Michael Caine and Bob Hoskins as the three major Allied leaders. It was the first video production to be produced in the 1125-line high-definition television (HDTV) format.^[16] It was converted to NTSC for broadcast in the United States.

The HDVS brand and logo was still used by Sony since 1997 as "Digital HDVS" on their digital high-definition HDCAM-format cameras such as the HDW-750, HDW-F900, HDC-1550, "Power HAD" camera Sony HSC-300 Series,^[17] and XDCAM camera PDW-850,^[18] PXW-X500.^[19] By 2022, HDVS branded cameras have been discontinued and new camera models released don't have the HDVS logo.

• Página de historia de Sony Corp.
• Página 2 de la historia de Sony Corp.
• Historial de copias de Sony, página 3