Service manual CP 385 / CP785
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1-3 ATSS sorting method
The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling
software for each program checks if a VPS CNI code is transmitted. If no VPS CNI code is found, the
system check if a CNI code is transmitted in the teletext lines ( Packet 8/30 format 1 ). If such a code
( VPS or teletext ) is found and if this code is in the ATSS list, the program is automatically named.
The programs found are then sorted in 4 groups :
Group I
: It contains all the programs from the selected country and named by the TV controlling
software. Within this group the sorting order is fixed by the ATSS list.
Group II
: It contains all the programs with a strong signal strength which are not listed in group I.
Group III
: It contains all the programs with a weak signal strength which are not listed in group I.
Group IV
: If two or more programs with the same code are found, only the strongest ( or if they have
the same level the one with the lowest frequency) is listed in group I, II or III. The others are listed in
group IV.
Note : If two programs with the same name but a different code are found these two programs are listed
in group I, II or III ( e.g. Regional program SW3 in Germany ).
The sorting order within group II, III, and IV is based on the channel frequency. The program with the
lowest frequency is allocated the first rank in its group, and so forth until the last program of the group
which has the highest frequency.
Program
number
Group
Skip
1
2
Group I
...
n
n+1
...
Group II
m
m+1
...
Group III
p
p+1
...
Group IV
q
q+1
...
not used
4
99
0
Program
number
Group
Skip
1
...
Group II
m
m+1
...
Group III
p
p+1
...
Group IV
q
q+1
...
not used
4
99
0
Special case :
Country selection = Others
Summary of Contents for DTA-20 T1
Page 17: ...Service manual CP 385 CP785 16...
Page 21: ...Service manual CP 385 CP785 20...
Page 34: ...Service manual CP 385 CP785 33 5 Circuit description 5 1 Block diagram...
Page 39: ...Service manual CP 385 CP785 38 Chassis block diagram IF...
Page 43: ...Service manual CP 385 CP785 42 Sound signal flow diagram...
Page 70: ...69 Service Manual cp 385 cp 785 7 Exploded View 7 1 DTA 20T1...
Page 73: ...72 7 4 DTA 20T8 Service Manual cp 385 cp 785...
Page 74: ...73 7 5 DTA 21T1 Service Manual cp 385 cp 785...
Page 76: ...75 7 7 DTA 21T5 Service Manual cp 385 cp 785...
Page 77: ...76 7 8 DTA 21T9 Service Manual cp 385 cp 785...
Page 79: ...78 Service Manual cp 385 cp 785 7 10 DTE 25G6...
Page 80: ...79 Service Manual cp 385 cp 785 7 11 DTE 25G7...
Page 82: ...81 7 13 DTE 28G6 Service Manual cp 385 cp 785...
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