IT1181383B - Dental tartar formation preventing compsn. - Google Patents

Dental tartar formation preventing compsn.

Info

Publication number
IT1181383B
IT1181383B IT45202/83A IT4520283A IT1181383B IT 1181383 B IT1181383 B IT 1181383B IT 45202/83 A IT45202/83 A IT 45202/83A IT 4520283 A IT4520283 A IT 4520283A IT 1181383 B IT1181383 B IT 1181383B
Authority
IT
Italy
Prior art keywords
block
compsn
data
formation preventing
digitised
Prior art date
Application number
IT45202/83A
Other languages
Italian (it)
Other versions
IT8345202A0 (en
IT8345202A1 (en
Inventor
Dr Giorgio Staibano
Dr Sergio Rosini
Dr Luciano Fontanelli
Dr Giulio Barelli
Original Assignee
Gentili Ist Spa
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 Gentili Ist Spa filed Critical Gentili Ist Spa
Priority to IT45202/83A priority Critical patent/IT1181383B/en
Publication of IT8345202A0 publication Critical patent/IT8345202A0/en
Publication of IT8345202A1 publication Critical patent/IT8345202A1/en
Application granted granted Critical
Publication of IT1181383B publication Critical patent/IT1181383B/en

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  • Transmission Systems Not Characterized By The Medium Used For Transmission (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.
IT45202/83A 1983-04-26 1983-04-26 Dental tartar formation preventing compsn. IT1181383B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT45202/83A IT1181383B (en) 1983-04-26 1983-04-26 Dental tartar formation preventing compsn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT45202/83A IT1181383B (en) 1983-04-26 1983-04-26 Dental tartar formation preventing compsn.

Publications (3)

Publication Number Publication Date
IT8345202A0 IT8345202A0 (en) 1983-04-26
IT8345202A1 IT8345202A1 (en) 1984-10-26
IT1181383B true IT1181383B (en) 1987-09-23

Family

ID=11256646

Family Applications (1)

Application Number Title Priority Date Filing Date
IT45202/83A IT1181383B (en) 1983-04-26 1983-04-26 Dental tartar formation preventing compsn.

Country Status (1)

Country Link
IT (1) IT1181383B (en)

Also Published As

Publication number Publication date
IT8345202A0 (en) 1983-04-26
IT8345202A1 (en) 1984-10-26

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