CONTENTS

Annex 1    
 1     Time address representation in 30 and 30/1.001 framesystems     
        1.1     Time address of a frame     
        1.2     Non-drop frame    
        1.3     Drop frame – DFT time     
        1.4     Colour frame identification in NTSC 525/59.94 television system    
 2     Time address representation in 25-frame systems 
        2.1     Time address of a frame     
        2.2     Colour frame identification in PAL 625/50 television systems          
        2.3     Logical relationship
        2.4     Arithmetic relationship        
 3     Time address representation in 24-frame systems 
        3.1     Time address of a frame     
        3.2     Operation at 24/1.001 (23.98) Hz (24/1.001 Hz)   
        3.3     Operation at 24.0 Hz         
 4     Time address representation in 50 and 60 frame progressive systems        
        4.1     Time address of a frame     
        5.1     Digital code           
        5.2     Time address         
        5.3     Flag bits 
                  5.3.1     Drop frame flag (29.97 Hz or 59.94 Hz systems only)       
                  5.3.2     Colour frame flag (525/59.94 and 625/50 systems only)    
                  5.3.3     Binary group flags 
                  5.3.4     Modulation method specific flag    
        5.4     Use of the binary groups    
        5.5     Character set not specified and unspecified clock time (BGF2=0, BGF1=0, BGF0=0)       
        5.6     Character set not specified and clock time (BGF2=0, BGF1=1, BGF0=0) 
        5.7     Eight-bit character set and unspecified clock time (BGF2=0, BGF1=0, BGF0=1)   
        5.8     Unassigned binary group usage and unspecified clock time (BGF2=0, BGF1=1, BGF0=1)    
        5.9     Date/time zone and unspecified clock time (BGF2=1, BGF1=0, BGF0=0) 
       5.10     Date/time zone and clock time (BGF2=1, BGF1=1, BGF0=0)      
       5.11     Page/line multiplex system and unspecified clock time (BGF2=1, BGF1=0, BGF0=1)      
       5.12     Page/line multiplex system and clock time (BGF2=1, BGF1=1, BGF0=1) 
 6     Linear time code structure
        6.1     Codeword format  
        6.2     Codeword data content     
        6.3     Time address         
        6.4     Flag bits 
        6.5     Binary groups        
        6.6     Synchronization word        
        6.7     Biphase mark polarity correction    
        6.8     Modulation method
        6.9     Bit rate   
       6.10     Timing of the codeword relative to a television signal          
       6.11     29.97/30 fps television systems reference timing    
       6.12     25/50-fps television systems reference timing         
       6.13     23.98/24-fps television system 2 (1920 ´ 1080 only)        
       6.14     Linear time code interface electrical and mechanical characteristics 
                  6.14.1     Rise/fall time       
                  6.14.2     Amplitude distortion        
                  6.14.3     Timing of the transitions   
                  6.14.4     Interface connector         
                  6.14.5     Output impedance          
                  6.14.6     Output amplitude
       6.15     Codeword format 
       6.16     Codeword data content    
                  6.16.1     Time address      
                  6.16.2     Flag bits 
                  6.16.3     Binary groups     
                  6.16.4     Field mark flag    
                  6.16.5     Synchronization bits        
                  6.16.6     CRC code          
       6.17     Modulation method           
       6.18     Bit timing and waveform characteristics     
                  6.18.1     Logic level          
                  6.18.2     Rise/fall time       
                  6.18.3     Amplitude distortion        
       6.19     Timing of the codeword relative to the line synchronizing signal       
                  6.19.1     525/59.94 television system        
                  6.19.2     1125/60 television system           
                  6.19.3     625/50 television system 
       6.20     Location of the address code signal in the vertical interval  
                  6.20.1     525/59.94 television system        
                  6.20.2     1125/60 television system           
                  6.20.3     625/50 television system 
 7     Relationship between LTC and VITC      
        7.1     Time address data 
        7.2     Binary group data  
                  7.2.1     Transferring vertical interval binary group data to linear binary group data   
                  7.2.2     Transferring linear binary group data to vertical interval binary group data   
        7.3     VITC and LTC code word comparison     
 8     Digital vertical interval time code (D-VITC)          
        8.1     Signal definition      
 9     Digital data 
10     Insertion lines may be a repeat    
Appendix 1 to Annex 1 - Bibliography    
Appendix 2 to Annex 1 - Converting time codes when converting video from 24 fps television systems    
 1     Conversion of 23.98 fps video to 59.94 fps video
 2     Conversion of 24 fps video to 25 fps video          
Appendix 3 to Annex 1 - D to A conversion and A to D conversion