IEC 60841:1988

FOREWORD
PREFACE
Clause
1 Scope
2 Object
SECTION ONE - GENERAL
3 System description
SECTION TWO - FORMAT OF THE RECORDED SIGNAL
4 General
5 Transmission rate
6 Configuration of the synchronizing signal
   6.1 Horizontal synchronizing signal
   6.2 Vertical synchronizing signal
7 Configuration of the horizontal line
   7.1 Data synchronizing signal
   7.2 Data block
   7.3 White reference signal
   7.4 Assignment in the horizontal period
8 Configuration of the vertical field
   8.1 Audio data block line
   8.2 Control data block line
   8.3 Assignment in the vertical field
SECTION THREE - SOURCE ENCODING
9 Audio signal
   9.1 Number of audio channels
   9.2 Emphasis
10 Source encoding
   10.1 Sampling
   10.2 Quantization
   10.3 Coding
SECTION FOUR - DATA BLOCK
11 Configuration of the audio data block
   11.1 General
   11.2 Sampled signal word
   11.3 Error correcting word
   11.4 Interleaving
   11.5 Error detecting word
   11.6 Assignment in the audio data block
12 Configuration of the control data block
   12.1 General
   12.2 Cueing word
   12.3 Content identification word
   12.4 Address word
   12.5 Control word
   12.6 Error detecting word
   12.7 Assignment in the control data block
FIGURES
APPENDIX A - Noise level in back porch
APPENDIX B - Error correcting word
APPENDIX C - Videocassette system considerations

Applies to the reversible process achieved by the PCM encoder/decoder system that transforms two audio signals into one PCM signal for compatibility, with either 525 line/ 60 field or 625 line/50 field television system. Establishes the signal format for the PCM encoder decoder for reproducing audio signals in PCM form on a consumer video cassette system. Ensures standardized system operation compatibility of encoder/decoder systems and interchangeability of recorder tapes with players and systems.