[Arny Krueger]

"John Atkinson" wrote in message
ups.com...

Arny Krueger wrote:
I know that the CDP 101 was about one step past being a lab prototype...

John attacks:


Not really.


I remember 2 previous generations of Sony players that were
used as technology demonstrators prior to the Japanese launch of CD in
the fall of 1982.

And then John agrees that there were only a very small number of steps from
lab prototype to the CDP 101.

The most recent mounted the disc vertically on the front
panel and was being shown at the 1982 Summer CES in Chicago.

The CDP 101 was first seen in public that fall.

http://kobnet.net/misc/www.cedmagic....y-cdp-101.html

"On October 1, 1982 Sony introduced the CDP-101"

The CDP-101 was very much a production machine, but suffered from
operating at 1xFs and using analog reconstruction filters and a
time-shared singe-channel DAC. Those were the features that were
replaced in subsequent Sony designs.

John contradicts himself because using a shared DAC means that the DAC
operatesat 2FS. However, it actually operated at 4FS because it was only an
8 bit DAC. It converted half of the data word and then scaled itself by 256
and converted the other half of the data word.

This shows up on the schematic in the service manual - which it appears that
John never really understood.