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EN 60856:1993/A2:1997
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The latest, up-to-date edition.
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PRE-RECORDED OPTICAL REFLECTIVE VIDEODISK SYSTEM "LASER VISION" 50 Hz/625 LINES - PAL
17-07-1997
FOREWORD
PREFACE
INTRODUCTION
SECTION ONE - GENERAL
1 Scope
2 Object
3 Standard atmospheric conditions for testing
SECTION TWO - DISK PARAMETERS
4 Mechanical parameters
5 Optical requirements
6 Temperature and humidity requirements
SECTION THREE - RECORDED PARAMETERS
7 Audio parameters
7.1 Channel applications
7.2 Audio subcarrier modulation of main carrier
8 Audio subcarrier frequencies
8.1 Type of modulation
8.2 Polarity of modulation
8.3 Pre-emphasis
8.4 Audio compression
9 Video parameters
9.1 Video signal
9.2 Video signal modulation
10 Vertical interval control and address signals
10.1 24-bit biphase coded signal
SECTION FOUR - OPERATIONAL SIGNALS
11 Definition of playback measurement system
11.1 Optical stylus
11.2 Measuring set-up
11.3 General measurement conditions
12 Operational parameters
12.1 Radial signal
12.2 Tangential signal
12.3 High-frequency signal
13 Implementation of a digital audio signal
13.1 Signal modulation
13.2 Sample frequency
13.3 Compensation of time delay
13.4 Analogue audio subcarriers
13.5 Control and display of the compact disk
system (subcode)
Figures
APPENDIX A - List of abbreviations
APPENDIX B - Audio compression system
APPENDIX C - Programme status code
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