ArVid
Encyclopedia
ArVid is a data backup solution using a VHS
tape as a storage medium. It was very popular in Russia
and former USSR in mid-1990s.
It was produced in Zelenograd
, Russia
by PO KSI.
recorder
unit should be connected to an ArVid ISA
board via a composite video
cable. Unit operation is controlled by a remote control
emulator using a LED
.
Device may operate in two modes: low data rate at 200 kbyte
/s and high data rate at 325 kbyte/s. Not all VHS recorders of the time were capable to support the latter.
An E-180 video tape is able to hold 2 Gb of uncompressed
data.
VHS
The Video Home System is a consumer-level analog recording videocassette standard developed by Victor Company of Japan ....
tape as a storage medium. It was very popular in Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
and former USSR in mid-1990s.
It was produced in Zelenograd
Zelenograd
Zelenograd is a city, which, along with the territories and settlements under its jurisdiction, forms one of the administrative okrugs of Moscow - Zelenograd Administrative Okrug...
, Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
by PO KSI.
Features
- Using low-cost VHSVHSThe Video Home System is a consumer-level analog recording videocassette standard developed by Victor Company of Japan ....
tapes and recording units for data backup. - High reliability
- Hamming codeHamming codeIn telecommunication, Hamming codes are a family of linear error-correcting codes that generalize the Hamming-code invented by Richard Hamming in 1950. Hamming codes can detect up to two and correct up to one bit errors. By contrast, the simple parity code cannot correct errors, and can detect only...
error correction - Easy data copying between two VHS units (eliminating need of a computer for data copying)
Disadvantages
- Inefficient tape capacity usage (only 2 grades of luminance signal spectrum were used)
- Poor software support
Operation
A VHSVHS
The Video Home System is a consumer-level analog recording videocassette standard developed by Victor Company of Japan ....
recorder
Recorder
The recorder is a woodwind musical instrument of the family known as fipple flutes or internal duct flutes—whistle-like instruments which include the tin whistle. The recorder is end-blown and the mouth of the instrument is constricted by a wooden plug, known as a block or fipple...
unit should be connected to an ArVid ISA
ISA
Isa is the name by which Jesus is known in the Muslim world.Isa may also refer to:* Isha Upanishad, Hindu religious text* Isa , 2004 album by Enslaved* Isa , common Arabic and Turkish male name...
board via a composite video
Composite video
Composite video is the format of an analog television signal before it is combined with a sound signal and modulated onto an RF carrier. In contrast to component video it contains all required video information, including colors in a single line-level signal...
cable. Unit operation is controlled by a remote control
Remote control
A remote control is a component of an electronics device, most commonly a television set, used for operating the television device wirelessly from a short line-of-sight distance.The remote control is usually contracted to remote...
emulator using a LED
LEd
LEd is a TeX/LaTeX editing software working under Microsoft Windows. It is a freeware product....
.
Device may operate in two modes: low data rate at 200 kbyte
Kilobyte
The kilobyte is a multiple of the unit byte for digital information. Although the prefix kilo- means 1000, the term kilobyte and symbol KB have historically been used to refer to either 1024 bytes or 1000 bytes, dependent upon context, in the fields of computer science and information...
/s and high data rate at 325 kbyte/s. Not all VHS recorders of the time were capable to support the latter.
An E-180 video tape is able to hold 2 Gb of uncompressed
Data compression
In computer science and information theory, data compression, source coding or bit-rate reduction is the process of encoding information using fewer bits than the original representation would use....
data.
Models
- ArVid 1010 was first of ArVid devices. Its production started in 1992.
- ArVid 1020 was a successor to ArVid 1010 using more advanced integrated circuitIntegrated circuitAn integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
ry. - ArVid 1030/1031 had better internal design, less power consumption, was less in size and was made using CPLD. It allowed automatic switching to a TV set when device was not in use.
- ArVid 1051/1052 introduced 325 kbyte/s data rate and 128/512 kbyte buffer cache (respectively).