CONTENTS

Policy on Intellectual Property Right (IPR)
Annex 1
 1     Interface
        1.1     Introduction
        1.2     Data structure
        1.3     Header section
                  1.3.1     ID
                  1.3.2     Data
        1.4     Subcode section
                  1.4.1     ID
                  1.4.2     Data
        1.5     VAUX section
                  1.5.1     1D
                  1.5.2     Data
        1.6     Audio section
                  1.6.1     ID
                  1.6.2     Data
        1.7     Video section
                  1.7.1     ID
                  1.7.2     Data
 2     Video compression
        2.1     Video structure
                  2.1.1     Sampling structure
                  2.1.2     DCT block
                  2.1.3     Macro block
                  2.1.4     Super block
                  2.1.5     Definition of a super block number, a macro block number and value of the pixel
                  2.1.6      Definition of video segment and compressed macro block
        2.2     DCT processing
                  2.2.1     DCT mode
                  2.2.2     Weighting
                  2.2.3     Output order
                  2.2.4     Tolerance of DCT with weighting
        2.3     Quantization
                  2.3.1     Introduction
                  2.3.2     Bit assignment for quantization
                  2.3.3      Class number
                  2.3.4      Initial scaling
                  2.3.5     Area number
                  2.3.6     Quantization step
       2.4      Variable length coding
        2.5     Arrangement of a compressed macro block
       2.6      Arrangement of a video segment
Appendix A (Informative)  Differences between IEC 61834 and Recommendation ITU-R BT.1618
Appendix B  Terms and Acronyms