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IT1181455B - Metal casting equipment protection - Google Patents

Metal casting equipment protection

Info

Publication number
IT1181455B
IT1181455B IT84117/84A IT8411784A IT1181455B IT 1181455 B IT1181455 B IT 1181455B IT 84117/84 A IT84117/84 A IT 84117/84A IT 8411784 A IT8411784 A IT 8411784A IT 1181455 B IT1181455 B IT 1181455B
Authority
IT
Italy
Prior art keywords
block
data
metal casting
casting equipment
digitised
Prior art date
Application number
IT84117/84A
Other languages
Italian (it)
Other versions
IT8484117A0 (en
Inventor
Roberto Pescatori
Original Assignee
Sirma
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 Sirma filed Critical Sirma
Priority to IT84117/84A priority Critical patent/IT1181455B/en
Publication of IT8484117A0 publication Critical patent/IT8484117A0/en
Application granted granted Critical
Publication of IT1181455B publication Critical patent/IT1181455B/en

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Landscapes

  • Arrangements For Transmission Of Measured 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.
IT84117/84A 1984-07-12 1984-07-12 Metal casting equipment protection IT1181455B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT84117/84A IT1181455B (en) 1984-07-12 1984-07-12 Metal casting equipment protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT84117/84A IT1181455B (en) 1984-07-12 1984-07-12 Metal casting equipment protection

Publications (2)

Publication Number Publication Date
IT8484117A0 IT8484117A0 (en) 1984-07-12
IT1181455B true IT1181455B (en) 1987-09-30

Family

ID=11324249

Family Applications (1)

Application Number Title Priority Date Filing Date
IT84117/84A IT1181455B (en) 1984-07-12 1984-07-12 Metal casting equipment protection

Country Status (1)

Country Link
IT (1) IT1181455B (en)

Also Published As

Publication number Publication date
IT8484117A0 (en) 1984-07-12

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940729