CA1015854A - Data recording with compression of data - Google Patents

Data recording with compression of data

Info

Publication number
CA1015854A
CA1015854A CA201,011A CA201011A CA1015854A CA 1015854 A CA1015854 A CA 1015854A CA 201011 A CA201011 A CA 201011A CA 1015854 A CA1015854 A CA 1015854A
Authority
CA
Canada
Prior art keywords
data
compression
recording
data recording
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
CA201,011A
Other languages
English (en)
Inventor
Patrice Abel
Pierre Duverne
Jean-Bernard Elziere
Jerome Verchere De Reffye
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Application granted granted Critical
Publication of CA1015854A publication Critical patent/CA1015854A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/04—Arrangements for displaying electric variables or waveforms for producing permanent records
    • G01R13/06—Modifications for recording transient disturbances, e.g. by starting or accelerating a recording medium
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/005—Circuits for altering the indicating characteristic, e.g. making it non-linear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/12—Measuring rate of change

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Recording Measured Values (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)
CA201,011A 1973-05-29 1974-05-28 Data recording with compression of data Expired CA1015854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7319565A FR2231972B1 (fr) 1973-05-29 1973-05-29

Publications (1)

Publication Number Publication Date
CA1015854A true CA1015854A (en) 1977-08-16

Family

ID=9120208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA201,011A Expired CA1015854A (en) 1973-05-29 1974-05-28 Data recording with compression of data

Country Status (10)

Country Link
US (1) US3943349A (fr)
JP (1) JPS5444420B2 (fr)
CA (1) CA1015854A (fr)
CH (1) CH581884A5 (fr)
DE (1) DE2423351B2 (fr)
ES (1) ES426754A1 (fr)
FR (1) FR2231972B1 (fr)
GB (1) GB1468218A (fr)
IT (1) IT1013246B (fr)
SE (1) SE404550B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339840A (en) * 1976-09-24 1978-04-12 Takeda Riken Ind Co Ltd Data recorder
DE2706080C2 (de) * 1977-02-12 1986-10-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur adaptiven Quantisierung von Transformationskoeffizienten eines Bildes und Anordnung zum Durchführen des Verfahrens
CA1031396A (fr) * 1977-02-16 1978-05-16 A. J. Brisson And Son Manufacturing Limited Fixation de balancier pour essieux arriere
JPS5915530B2 (ja) * 1978-02-21 1984-04-10 大日本スクリ−ン製造株式会社 アナログ信号のサンプリング方法
ZA782493B (en) * 1978-05-01 1979-12-27 Anglo Amer Corp South Africa Rate of change detection
GB2069264A (en) * 1980-07-02 1981-08-19 Hewlett Packard Co Data compression apparatus
JPS5819229A (ja) * 1981-07-24 1983-02-04 株式会社東芝 携帯用長時間心電図記録装置
US4751673A (en) * 1982-03-22 1988-06-14 The Babcock & Wilcox Company System for direct comparison and selective transmission of a plurality of discrete incoming data
ATE27496T1 (de) * 1983-06-24 1987-06-15 Siemens Ag Stoerungserkennungs- und -aufzeichnungssystem.
JPS6029834A (ja) * 1983-07-06 1985-02-15 Fuji Electric Co Ltd デ−タ処理方法
US4879558A (en) * 1986-12-12 1989-11-07 Sangamo Weston, Inc. Data compression apparatus and method for data recorder with waveform envelope display
US6356961B1 (en) * 1994-06-03 2002-03-12 Motorola, Inc. Method and apparatus for minimizing an amount of data communicated between devices and necessary to modify stored electronic documents
US7197189B2 (en) * 2003-05-15 2007-03-27 Hewlett-Packard Development Company, L.P. System and method having removable storage medium with data compression

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162398B (de) * 1961-10-24 1964-02-06 Ibm Verdichter fuer Daten, die aus Bits verschiedener Wertigkeit bestehen
US3225333A (en) * 1961-12-28 1965-12-21 Ibm Differential quantitized storage and compression
US3490690A (en) * 1964-10-26 1970-01-20 Ibm Data reduction system
US3641506A (en) * 1969-11-14 1972-02-08 Gen Dynamics Corp Information handling system especially for magnetic recording and reproducing of digital data
US3726993A (en) * 1971-12-10 1973-04-10 Xerox Corp Data compression methods and apparatus

Also Published As

Publication number Publication date
DE2423351B2 (de) 1976-09-02
US3943349A (en) 1976-03-09
FR2231972B1 (fr) 1977-04-29
ES426754A1 (es) 1977-01-01
SE404550B (sv) 1978-10-09
DE2423351A1 (de) 1974-12-12
JPS5022547A (fr) 1975-03-11
SE7407048L (fr) 1974-12-02
JPS5444420B2 (fr) 1979-12-26
CH581884A5 (fr) 1976-11-15
IT1013246B (it) 1977-03-30
GB1468218A (en) 1977-03-23
FR2231972A1 (fr) 1974-12-27

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