When did the first video recorder come out?
In 1953 Dr. Norikazu Sawazaki developed a prototype helical scan video tape recorder. Another solution was transverse-scan technology, developed by Ampex around 1954, in which the recording heads are mounted on a spinning drum and record tracks in the transverse direction, across the tape. By recording on the full width of the tape rather than just a narrow track down the center, this technique achieved a much higher density of data per linear centimeter of tape, allowing a lower tape speed of 15 inches per second to be used. The Ampex VRX-1000 became the world's first commercially successful videotape recorder in 1956. It uses the 2″ quadruplex format, using two-inch (5.1 cm) tape. Because of its price, the Ampex VRX-1000 could be afforded only by the television networks and the largest individual stations.
What year was the prototype of the video recorder invented?
1953
Video tape recorder
The Telcan, produced by the Nottingham Electronic Valve Company and demonstrated on June 24, 1963, was the first home video recorder. It could be bought as a unit or in kit form for £60. However, there were several drawbacks: it was expensive, not easy to put together, and can record for only 20 minutes at a time in black-and-white.
When did the first home video recorder come out?
1963
Video tape recorder
No context provided
When did the first digital video recorders come out?
1999
No context provided
When did the first commercial video tape recorder come out?|What year was the first successfull video recorder invented?
1956
Videocassette recorder
https://en.wikipedia.org/wiki/Videocassette%20recorder
Video tape recorder
https://en.wikipedia.org/wiki/Video%20tape%20recorder
Digital video recorder
https://en.wikipedia.org/wiki/Digital%20video%20recorder
A videocassette recorder (VCR) or video recorder is an electromechanical device that records analog audio and analog video from broadcast television or other source on a removable, magnetic tape videocassette, and can play back the recording. 
Videocassette recorder
The Ampex VRX-1000 became the world's first commercially successful videotape recorder in 1956.
Video tape recorder History
Consumer digital video recorders ReplayTV and TiVo were launched at the 1999 Consumer Electronics Show in Las Vegas, Nevada.
Digital video recorder History
A videocassette recorder (VCR) or video recorder is an electromechanical device that records analog audio and analog video. The prototype was developed in 1953 by Dr. Norikazu Sawazaki but the the world's first commercially successful videotape recorder was the Ampex VRX-1000, in 1956. In 1963, the first home video recorder, Telcan, was produced by the Nottingham Electronic Valve Company. Digital video recorders (ReplayTV and TiVo) were first launched in 1999, at the Consumer Electronics Show in Las Vegas, Nevada.