Atsc working Draft Template

Case: Genre Category (
dcc_selection_type
 = 0x07, 0x08, 0x17, 0x18) 
If 
dcc_selection_type
is equal to 0x07, 0x08, 0x17, or 0x18, the 
dcc_selection_id
shall be specified to 
be a genre category selection code field. The DCCRR shall compare the code values obtained from 
the 
dcc_selection_id
field to stored values which had been entered by the user through selection setup 
menus to determine if there is a match. Each occurrence of the 
dcc_selection_id
may contain up to 
eight categorical selection codes, each code having a length of eight bits. 
Up to a maximum of eight 8-bit Genre Category selection codes may be specified. Genre 
Category selection code bytes shall be placed right-justified in the 64-bit 
dcc_selection_id
field. Each 
of the codes present shall consist of a value in the range 0x01 through 0xFF. If fewer than eight 
codes are specified, the remaining bytes in the 
dcc_selection_id
field shall each contain 0x00. Table 
6.19 illustrates the categorical selection criteria code placement within the 
dcc_selection_id
field for 
four examples. 
Table 6.19 Examples of Selection Code Packing 
Value 
Meaning 
0x0000000000000000 
no codes specified 
0x0000000000222120 
3 codes in least significant 24 bits 
0x0000000052304120 
4 codes in least significant 32 bits 
0x3031323334353620 
8 codes in 64 bits 
If the selection is specified to be of type “One-or-More Members” (
dcc_selection_type
0x07), 
each of the individual eight byte values received within 
dcc_selection_id
shall be compared with data 
in the DCCRR’s stored value tables. Each compare results in a ’1’ if the category corresponds to 
one of interest and ‘0’ if not. That 8-bit result is ANDed with the S mask corresponding to whether 
choices have been registered for each of those categories. If the result is non-zero, the term shall 
evaluate True, and shall evaluate False otherwise. This test permits selection based upon interest 
membership in at least one and possibly more of the genre categories according to the Categorical 
57 

---

ATSC A/65:2013 
Program and System Information Protocol 
7 August 2013 
Genre Code Assignment table (Table 6.20) including any downloaded extensions to that table. In 
other words, the term evaluates True if the genre categories that had been selected and validated 
by the viewer correspond with interest in any of the of the genre categories specified in the 
dcc_selection_id
field of the DCCT.