JPS5743232A - Data compression device - Google Patents
Data compression deviceInfo
- Publication number
- JPS5743232A JPS5743232A JP9905481A JP9905481A JPS5743232A JP S5743232 A JPS5743232 A JP S5743232A JP 9905481 A JP9905481 A JP 9905481A JP 9905481 A JP9905481 A JP 9905481A JP S5743232 A JPS5743232 A JP S5743232A
- Authority
- JP
- Japan
- Prior art keywords
- data
- value
- latches
- sample
- latch
- 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.)
- Granted
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)
- Public Health (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Physiology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Signal Processing (AREA)
- Artificial Intelligence (AREA)
- Psychiatry (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Medical Treatment And Welfare Office Work (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To select a data sample having the largest absolute difference as a display sample, by determining the absolute difference between the value of each data sample of a digital data representing electric activity of a heart and the average value of data sample preceding thereto. CONSTITUTION:A signal from an analog signal source 12 such as an ECG (electrocardiogram) wave is converted into a digital sample value at an A/D converter 14, applied to a latch L1 and each data of the group is stored while the samples are shifted in shift registers L2-L4. Each data of the latches L1-L4 is subtracted at subtractors 26-32 with the value of the latch L5 storing the average value of the data sample of the preceding group, and absolute processing is made at absolute circuits 26'-32', the respective output selects the maximum value at comparators 34, 40, 46, and an output is obtained from one of the outputs a'-d' of gates 6''-9'', one output from the latches L1-L4 is set to one of the latches L6-L9 and applied to a display means 25. The average value of the content of the latches L1-L4 is supplied to the latch L5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16516980A | 1980-07-02 | 1980-07-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5743232A true JPS5743232A (en) | 1982-03-11 |
JPH0157369B2 JPH0157369B2 (en) | 1989-12-05 |
Family
ID=22597738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9905481A Granted JPS5743232A (en) | 1980-07-02 | 1981-06-25 | Data compression device |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5743232A (en) |
GB (1) | GB2069264A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1192654A (en) * | 1982-01-11 | 1985-08-27 | Technicare Corporation | Ultrasonic image storage device and method |
GB9114177D0 (en) * | 1991-07-01 | 1991-08-21 | Marconi Instruments Ltd | Methods of reducing the size of a display whilst substantially maintaining its information content |
US8935039B2 (en) * | 2010-12-13 | 2015-01-13 | Korea Railroad Research Institute | Method for reducing detection data of a monitoring device in a vehicle, and method for monitoring a vehicle defect in near real time using same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4960683A (en) * | 1972-10-13 | 1974-06-12 | ||
JPS5022547A (en) * | 1973-05-29 | 1975-03-11 |
-
1980
- 1980-12-10 GB GB8039601A patent/GB2069264A/en not_active Withdrawn
-
1981
- 1981-06-25 JP JP9905481A patent/JPS5743232A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4960683A (en) * | 1972-10-13 | 1974-06-12 | ||
JPS5022547A (en) * | 1973-05-29 | 1975-03-11 |
Also Published As
Publication number | Publication date |
---|---|
JPH0157369B2 (en) | 1989-12-05 |
GB2069264A (en) | 1981-08-19 |
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