[QuadList] NHK's research lab developed a Quad machine in 1958

[Chill315 at aol.com]

Yes you are sane.  You are not smoking any of that strange  stuff.
 
Akai made a 1 inch quad and showed it.  I do not know if any were  sold.  
 
Chris Hill
WA8IGN
 
 
In a message dated 2/27/2011 5:50:22 P.M. Eastern Standard Time,  
wayne.watson at sait.ca writes:

This post jogged a  very foggy old memory. In about 1973 or 74 at NAB was 
there a one inch quad  shown by an Asian manufacturer? My recall was that it 
had a head that looked  like a very small Ampex quad. When I went by the 
both I was surprised to  see it, however there was nobody there at that time 
that could speak  enough English to tell anything about it.
Was there ever such a recorder was  it a bad dream?
 
 
 
Wayne  Watson 


  
____________________________________
 From: quadlist-bounces at quadvideotapegroup.com  
[quadlist-bounces at quadvideotapegroup.com] On Behalf Of Ted Langdell  [ted at quadvideotapegroup.com]
Sent: Sunday, February 27, 2011 3:23  PM
To: Quad List
Subject: [QuadList] NHK's research lab  developed a Quad machine in 1958




While poking around NHK's history site for a post on OldVTR's, I ran  
across this link, which shows a Japanese flatbed Quad developed in 1958 by  NHK's 
"STRL"—its research lab.


_http://www.nhk.or.jp/strl/aboutstrl/evolution-of-tv-en/p15col_4.html_ 
(http://www.nhk.or.jp/strl/aboutstrl/evolution-of-tv-en/p15col_4.html) 


In the second picture, note what look like AVR-2s beyond the Sony  
BVH-machines.


The Sony's look like BVH-1000/1100 series machines. Can anyone opine as  to 
how to tell the differences in a photo that small?
 
 
 
 
VTR
The  first domestic VTR system in Japan was a 4-head VTR using 2-inch tape 
reels,  test manufactured in 1958. Developments were later made on a frame 
converter  and a slow-motion VTR system , with the aim of implementation for 
the Rome and  Tokyo Olympics. In 1964, NHK obtained a basic patent for a 
1.5-head  helical-scan VTR system. This system was later implemented on a 
1-inch  helical-scan VTR.
       
2-inch  VTR by STRL in 1958
A 4-head VTR using 2-inch magnetic tape -  extremely expensive at the time 
of  introduction.
Video tape: price and recording area per bit  (square micrometer)
2-inch (Ampex)
90 min.
1,000,000 yen
100ìm2/bit
1-inch (Sony Type C)
60 min.
120,000 yen
10ìm2/bit

1/2-inch (Matsushita D-3)
60 min.
20,000 yen
2ìm2/bit

       
1-  inch VTR in 1978
The analog VTR helical-scan system using a 1-inch  open reel tape was 
called the Type C format. This 1-inch tape was  smaller and cheaper than 2-inch 
tape. It later became the basis for the  1-inch HDTV analog VTR and the 
1-inch HDTV digital  VTR.

       
D-3  VCR in 1991
A 1/2-inch small cassette digital VCR was introduced in  1991. It allowed 
repeated taping without deterioration of picture  quality. This technology 
was succeeded by the HDTV digital VCR, the  HD-D5.








Ted

 
 
 

Ted  Langdell
Secretary
Skype:  TedLangdell
e-mail: _ted at quadvideotapegroup.com_ (mailto:ted at quadvideotapegroup.com) 








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