| Title: | The Joy of Lex |
| Notice: | A Notes File even your grammar could love |
| Moderator: | THEBAY::SYSTEM |
| Created: | Fri Feb 28 1986 |
| Last Modified: | Mon Jun 02 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1192 |
| Total number of notes: | 42769 |
Hi, I read a new phrase called "Plesiochronous Digital Hierarchy" (abbreviated PDH) in an article yesterday and believe it's wrong. The shorter Oxford dictionary defines the prefix "Plesio-" as the Greek for "Chiefly near" or "Close to", however the suffix "chronous" on its own doesn't exist. I'm assuming the author took the word "synchronous", which is defined under "computing/tele-communications" as "equally spaced pulses that govern the timing of operations", and wanted to say "close to equally spaces pulses...". But shouldn't the word then be "plesiosynchronous"? I would appreciate responses to this new made-up word from the field. Kind regards Mitchell
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1169.1 | a few more | MARVIN::HIGGINSON | Peter Higginson DTN 830 6293, Reading UK | Thu Jun 20 1996 12:54 | 25 |
I think they just ran out of special words for the different types; of synchronism; the 1988 CCITT (I know it's not called that anymore but it was then) G.701 defines: isochronous anisochronous synchronous [ mesochronous ] homochronous non-synchronous [ asynchronous, heterochronous ] plesiochronous heterochronous (Together with French and Spanish equivalents of course.) One of the notes says the last 6 (sic) are based on the folowing greek roots: iso = equal homo = same plesio = near hetero = different Peter | |||||
| 1169.2 | STARCH::HAGERMAN | Flames to /dev/null | Wed Jun 26 1996 12:41 | 6 | |
I was in a meeting yesterday where it was claimed that plesisochronous
was when you had a node in a loop that ran on its own clock (not
synchronized to the incoming bit stream) and that had to insert idle
characters in order to synchronize with the incoming isochronous data.
FWIW.
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