IT1181379B - Phosphorane cpds. - Google Patents
Phosphorane cpds.Info
- Publication number
- IT1181379B IT1181379B IT41003/84A IT4100384A IT1181379B IT 1181379 B IT1181379 B IT 1181379B IT 41003/84 A IT41003/84 A IT 41003/84A IT 4100384 A IT4100384 A IT 4100384A IT 1181379 B IT1181379 B IT 1181379B
- Authority
- IT
- Italy
- Prior art keywords
- block
- data
- digitised
- communication link
- circuit
- Prior art date
Links
Abstract
The data reduction apparatus is used in a system where speech signals, e.g. between telephones, are digitised in a circuit and later reconverted. Successive blocks of digitised data, e.g. 16m seconds thereof, are compared with each other in the frequency domain in a comparator. The conversion is effected in a circuit block. If one block is similar to its predecessor within pre-set limits, that block is not sent to the output, and instead a control signal is passed to the communication link to instruct a store to repeat the previous block at the other end of the communication link. Thus only critical data blocks are transmitted and the data rate is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT41003/84A IT1181379B (en) | 1984-06-11 | 1984-06-11 | Phosphorane cpds. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT41003/84A IT1181379B (en) | 1984-06-11 | 1984-06-11 | Phosphorane cpds. |
Publications (3)
Publication Number | Publication Date |
---|---|
IT8441003A0 IT8441003A0 (en) | 1984-06-11 |
IT8441003A1 IT8441003A1 (en) | 1985-12-11 |
IT1181379B true IT1181379B (en) | 1987-09-23 |
Family
ID=11250012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT41003/84A IT1181379B (en) | 1984-06-11 | 1984-06-11 | Phosphorane cpds. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1181379B (en) |
-
1984
- 1984-06-11 IT IT41003/84A patent/IT1181379B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8441003A0 (en) | 1984-06-11 |
IT8441003A1 (en) | 1985-12-11 |
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