GB1366536A - Digital expander for use with a compandor in a pcm transmission system - Google Patents

Digital expander for use with a compandor in a pcm transmission system

Info

Publication number
GB1366536A
GB1366536A GB4354171A GB4354171A GB1366536A GB 1366536 A GB1366536 A GB 1366536A GB 4354171 A GB4354171 A GB 4354171A GB 4354171 A GB4354171 A GB 4354171A GB 1366536 A GB1366536 A GB 1366536A
Authority
GB
United Kingdom
Prior art keywords
bits
binary code
bit
register
signal
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB4354171A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Italtel SpA
Original Assignee
Societa Italiana Telecomunicazioni Siemens 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 Societa Italiana Telecomunicazioni Siemens SpA filed Critical Societa Italiana Telecomunicazioni Siemens SpA
Publication of GB1366536A publication Critical patent/GB1366536A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/50—Conversion to or from non-linear codes, e.g. companding

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB4354171A 1970-09-24 1971-09-17 Digital expander for use with a compandor in a pcm transmission system Expired GB1366536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3013570 1970-09-24

Publications (1)

Publication Number Publication Date
GB1366536A true GB1366536A (en) 1974-09-11

Family

ID=11229185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4354171A Expired GB1366536A (en) 1970-09-24 1971-09-17 Digital expander for use with a compandor in a pcm transmission system

Country Status (5)

Country Link
US (1) US3755808A (cg-RX-API-DMAC7.html)
DE (1) DE2131634A1 (cg-RX-API-DMAC7.html)
FR (1) FR2107919B1 (cg-RX-API-DMAC7.html)
GB (1) GB1366536A (cg-RX-API-DMAC7.html)
SE (1) SE362762B (cg-RX-API-DMAC7.html)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863248A (en) * 1973-01-02 1975-01-28 Univ Sherbrooke Digital compressor-expander
US4040049A (en) * 1975-10-09 1977-08-02 Bell Telephone Laboratories, Incorporated Tandem block digital processor for use with nonuniformly encoded digital data
US4076966A (en) * 1976-08-02 1978-02-28 Societa Italiana Telecomunicazioni Siemens S.P.A. Method of and system for handling conference calls in digital telephone exchange
DE3104528C2 (de) * 1981-02-09 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Umwandlung linear codierter PCM-Worte in nichtlinear codierte PCM-Worte und umgekehrt
JPS5939134A (ja) * 1982-08-30 1984-03-03 Hitachi Ltd 折線伸張回路
US6396955B1 (en) * 1998-06-25 2002-05-28 Asahi Kogaku Kogyo Kabushiki Kaisha Image compression and expansion device
US20220354761A1 (en) 2021-04-30 2022-11-10 L'oreal Compositions and methods for treating keratin fibers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594560A (en) * 1969-01-03 1971-07-20 Bell Telephone Labor Inc Digital expandor circuit

Also Published As

Publication number Publication date
SE362762B (cg-RX-API-DMAC7.html) 1973-12-17
US3755808A (en) 1973-08-28
DE2131634A1 (de) 1972-03-30
FR2107919B1 (cg-RX-API-DMAC7.html) 1974-10-31
FR2107919A1 (cg-RX-API-DMAC7.html) 1972-05-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee