In article ,
Iain Churches wrote:

"Dave Plowman (News)" wrote in message
...
In article ,
Iain Churches wrote:
IIRC, Philips only licensed the use of their format if their
specification
was adhered to. Anything else would be a nonsense.

Dobly B was not a part of the spec.

The C cassette was launched in 1963 and
Dolby B was first demonstrated five years later

The Compact Cassette was introduced as a mono format for dictation
machines, etc. Philips were sensible enough to allow it to be used
under license but free of charge. But did retain a degree of control
over the basics.

I'm not sure if this included the use of Dolby B or not. But did over
the basics like speed.

The spec laid down in Sept 1963 could not have included Dolby B as this
was still five years away from the first demonstration in 1968

Yes - you made that point earlier.

Did you miss the bit about the original purpose of the compact cassette?

--
*With her marriage she got a new name and a dress.*

Dave Plowman London SW
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