CA1023864A - Code converter - Google Patents

Code converter

Info

Publication number
CA1023864A
CA1023864A CA200,375A CA200375A CA1023864A CA 1023864 A CA1023864 A CA 1023864A CA 200375 A CA200375 A CA 200375A CA 1023864 A CA1023864 A CA 1023864A
Authority
CA
Canada
Prior art keywords
code converter
converter
code
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
CA200,375A
Other languages
French (fr)
Inventor
Ludwig D.J. Eggermont
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1023864A publication Critical patent/CA1023864A/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
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3048—Conversion to or from one-bit differential modulation only, e.g. delta modulation [DM]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0614—Non-recursive filters using Delta-modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0657—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
CA200,375A 1973-05-24 1974-05-21 Code converter Expired CA1023864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7307237A NL7307237A (en) 1973-05-24 1973-05-24

Publications (1)

Publication Number Publication Date
CA1023864A true CA1023864A (en) 1978-01-03

Family

ID=19818935

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200,375A Expired CA1023864A (en) 1973-05-24 1974-05-21 Code converter

Country Status (8)

Country Link
JP (1) JPS5042774A (en)
BE (1) BE815408A (en)
CA (1) CA1023864A (en)
DK (1) DK135019B (en)
FR (1) FR2231158B1 (en)
GB (1) GB1455733A (en)
NL (1) NL7307237A (en)
SE (1) SE388520B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL176211C (en) * 1974-09-16 1985-03-01 Philips Nv INTERPOLING DIGITAL FILTER.
FR2326823A1 (en) * 1975-10-02 1977-04-29 Tech Electro Fse Telephone exchange interconnecting unit - has digital interpolation filter in multiplexed line and analogue filters in each voice line
GB2133238A (en) * 1982-12-10 1984-07-18 Marconi Co Ltd Coder/decoder arrangements
JPS6354827A (en) * 1986-08-26 1988-03-09 Sony Corp Differential pcm signal generating circuit

Also Published As

Publication number Publication date
NL7307237A (en) 1974-11-26
DK135019C (en) 1977-07-11
FR2231158B1 (en) 1979-03-09
AU6912874A (en) 1975-11-20
FR2231158A1 (en) 1974-12-20
JPS5042774A (en) 1975-04-18
DK135019B (en) 1977-02-21
BE815408A (en) 1974-11-22
DE2422926B2 (en) 1977-03-17
GB1455733A (en) 1976-11-17
DK277674A (en) 1975-01-13
DE2422926A1 (en) 1974-12-12
SE388520B (en) 1976-10-04

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