Atsc working Draft Template
Download 4.82 Kb. Pdf ko'rish
|
dastur pratoqoli
current_next_indicator
– This 1-bit indicator is always set to ‘1’. section_number – The value of this 8-bit field shall always be 0x00. last_section_number – The value of this 8-bit field shall always be 0x00. protocol_version – An 8-bit unsigned integer field whose function is to allow, in the future, this table type to carry parameters that may be structured differently than those defined in the current protocol. At present, the only valid value for protocol_version is 0x00. Non-zero values of protocol_version may be used by a future version of this standard to indicate structurally different tables. update_type – This 8-bit field indicates the type of update to be supplied in this iteration of the “for” loop. The coding shall be as defined in Table 6.24. Table 6.24 Update Type Coding update_type Meaning 0x00 Reserved 0x01 new_genre_category—Genre table update 0x02 new_state—Addition to state code data 0x03 new_county—Addition to county code data 0x04-0xFF Reserved for future use update_data_length – An unsigned integer field that shall indicate the number of bytes of data in the “if” statement to follow. After skipping ahead the number of bytes given by update_length , the next field will be the 6-bit reserved field ahead of dccsct_descriptors_length. Receiving devices are expected to use update_data_length to skip data for unknown values of update_type . genre_category_code – An 8-bit unsigned integer code that references a reserved value in the Categorical Genre Code Assignment Table (Table 6.20). Values for genre_category_code shall be in the range 0x01 to 0x1F for expansion of the Basic genre categories, or in the range 0xAE through 0xFE for expansion of the Detailed genre categories. The integer values specifying new Categorical Genre Codes shall be those assigned by the ATSC. 65 ATSC A/65:2013 Program and System Information Protocol 7 August 2013 Download 4.82 Kb. Do'stlaringiz bilan baham: |
Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling
ma'muriyatiga murojaat qiling