IT1181407B - Paving material - Google Patents
Paving materialInfo
- Publication number
- IT1181407B IT1181407B IT82541/84A IT8254184A IT1181407B IT 1181407 B IT1181407 B IT 1181407B IT 82541/84 A IT82541/84 A IT 82541/84A IT 8254184 A IT8254184 A IT 8254184A IT 1181407 B IT1181407 B IT 1181407B
- Authority
- IT
- Italy
- Prior art keywords
- block
- data
- digitised
- communication link
- circuit
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 abstract 1
Landscapes
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
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 |
---|---|---|---|
IT82541/84A IT1181407B (en) | 1984-09-04 | 1984-09-04 | Paving material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT82541/84A IT1181407B (en) | 1984-09-04 | 1984-09-04 | Paving material |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8482541A0 IT8482541A0 (en) | 1984-09-04 |
IT1181407B true IT1181407B (en) | 1987-09-23 |
Family
ID=11318599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT82541/84A IT1181407B (en) | 1984-09-04 | 1984-09-04 | Paving material |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1181407B (en) |
-
1984
- 1984-09-04 IT IT82541/84A patent/IT1181407B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8482541A0 (en) | 1984-09-04 |
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