JPS5743233A - Data compressor - Google Patents

Data compressor

Info

Publication number
JPS5743233A
JPS5743233A JP9905581A JP9905581A JPS5743233A JP S5743233 A JPS5743233 A JP S5743233A JP 9905581 A JP9905581 A JP 9905581A JP 9905581 A JP9905581 A JP 9905581A JP S5743233 A JPS5743233 A JP S5743233A
Authority
JP
Japan
Prior art keywords
data
sample
latch
display
output
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.)
Pending
Application number
JP9905581A
Other languages
Japanese (ja)
Inventor
Pii Biibe Richiyaado
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.)
Hewlett Packard Japan Inc
Original Assignee
Yokogawa Hewlett Packard Ltd
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 Yokogawa Hewlett Packard Ltd filed Critical Yokogawa Hewlett Packard Ltd
Publication of JPS5743233A publication Critical patent/JPS5743233A/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7232—Signal processing specially adapted for physiological signals or for diagnostic purposes involving compression of the physiological signal, e.g. to extend the signal recording period
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Artificial Intelligence (AREA)
  • Signal Processing (AREA)
  • Psychiatry (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physiology (AREA)
  • Analogue/Digital Conversion (AREA)
  • Medical Treatment And Welfare Office Work (AREA)
  • Image Processing (AREA)

Abstract

PURPOSE: To compress the data, by selecting a data sample which is most different from the value selected as a display sample in a preceding group as the data sample for display from a digital data representing the electric activity of a heart.
CONSTITUTION: A signal from an analog signal source 12 such as ECG (electrocardiogram) wave is applied to an A/D converter 14, and a digital sample being the output is applied to a latch L1 and shifted sequentially in latches L2WL4 constituting shift registers and each data of the group is stored. Each data of the latch L1WL4 is subtracted at subtractors 20W26 with the data in the latches L5WL8 selected as the display sample at the previous time, the result of subtraction is compared at comparators 30, 36W40 via absolute circuits 20'W26', and when the output of the latch L2 has the largest difference, an output is generated at an AND gate 66, a gate 92 is turned on with a group signal S' and the latch L6 is set, and selected data is supplied to a display means 29.
COPYRIGHT: (C)1982,JPO&Japio
JP9905581A 1980-07-02 1981-06-25 Data compressor Pending JPS5743233A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16517280A 1980-07-02 1980-07-02

Publications (1)

Publication Number Publication Date
JPS5743233A true JPS5743233A (en) 1982-03-11

Family

ID=22597761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9905581A Pending JPS5743233A (en) 1980-07-02 1981-06-25 Data compressor

Country Status (2)

Country Link
JP (1) JPS5743233A (en)
GB (1) GB2079568A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426052A1 (en) * 1978-05-19 1979-12-14 Kureha Chemical Ind Co Ltd NITROFURYL-VINYLENIC COMPOUNDS, NEW ANTITUMOR DRUGS
JPS60262032A (en) * 1984-06-09 1985-12-25 Mazda Motor Corp Color discrimination apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325823B (en) * 1997-04-05 2002-02-20 Univ Nottingham Signal compression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426052A1 (en) * 1978-05-19 1979-12-14 Kureha Chemical Ind Co Ltd NITROFURYL-VINYLENIC COMPOUNDS, NEW ANTITUMOR DRUGS
JPS60262032A (en) * 1984-06-09 1985-12-25 Mazda Motor Corp Color discrimination apparatus

Also Published As

Publication number Publication date
GB2079568A (en) 1982-01-20

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