IT1181407B - Paving material - Google Patents

Paving material

Info

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
Application number
IT82541/84A
Other languages
Italian (it)
Other versions
IT8482541A0 (en
Inventor
Dario Fontana
Original Assignee
Orp Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Orp Srl filed Critical Orp Srl
Priority to IT82541/84A priority Critical patent/IT1181407B/en
Publication of IT8482541A0 publication Critical patent/IT8482541A0/en
Application granted granted Critical
Publication of IT1181407B publication Critical patent/IT1181407B/en

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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.
IT82541/84A 1984-09-04 1984-09-04 Paving material IT1181407B (en)

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)

Also Published As

Publication number Publication date
IT8482541A0 (en) 1984-09-04

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