Method and apparatus for processing digital service signal

A method of processing a digital service signal, the method comprising:

• generating, by a generator, contents, at least one application related to the contents, an NRT (Non-Real Time) service map table for signaling the contents and an application parameter table including metadata about the at least one application;
• generating, by a PDI table generator, a PDI table,
• wherein the PDI table includes at least one question element having attributes a PDI question, and each of the at least one question element includes a question identification element identifying a PDI question and an answer element including an answer for the identified PDI question;
• generating, by a filtering criteria information generator, a first filtering criteria information including a first criterion on the basis of which to filter the contents, wherein the first filtering criteria information comprises a criterion id of the first criterion and a criterion value of the first criterion,
• wherein the criterion id of the first criterion is used for querying whether the criterion id of the first criterion from the first filtering criteria information matches the question identification element of the PDI question from the PDI table,
• wherein the criterion value of the first criterion is used for comparing the criterion value of the first criterion from the first filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the PDI table, in the event the querying indicates that the criterion id of the first criterion matches the question identification element of the PDI question from the PDI table,
• wherein the contents is filtered when the comparing indicates that the criterion value of the first criterion matches the PDI answer corresponding to the question identification element from the PDI table;
• generating, by the filtering criteria information generator, a second filtering criteria information including a second criterion on the basis of which to filter a content item used by a first application of the at least one application, wherein the second filtering criteria information comprises a criterion id of a second criterion and a criterion value of the second criterion,
• wherein the application parameter table includes therein a first application element, representing a child element of the application parameter table comprising information about the first application, wherein the first application element is indicated in the application parameter table as a first hierarchical sublevel sub element of the application parameter table, wherein the first application element comprises an identifier identifying the first application uniquely within a scope of the application parameter table,
• wherein the application parameter table includes therein a first content item element, representing a child element of the first application element including information about the content item that are needed by the first application, wherein the first content item element is indicated in the application parameter table as a first hierarchical sublevel sub element of the first application element at a second hierarchical sublevel of the application parameter table,
• wherein the application parameter table includes therein the second filtering criteria information, represented as a child element of the first content item element, wherein the second filtering criteria information is indicated in the application parameter table as a first hierarchical sublevel sub element of the first content item element at a third hierarchical sublevel of the application parameter table,
• wherein the criterion id of the second criterion is used for querying whether the criterion id of the second criterion from the second filtering criteria information matches the question identification element of the PDI question form the PDI table,
• wherein the criterion value of the second criterion is used for comparing the criterion value of the second criterion from the second filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the PDI table, in the event the querying indicates that the criterion id of the second criterion matches the question identification element of the PDI question from the PDI table,
• wherein the content item is filtered when the comparing indicates that the criterion value of the second criterion matches the PDI answer corresponding to the question identification element from the PDI table,
• wherein the NRT service map table includes the first filtering criteria, wherein the application parameter table includes the second filtering criteria;
• and
• transmitting, by a transmitting processor, the PDI table, the first filtering criteria information, the second filtering criteria information, the at least one application and the contents.

An apparatus for receiving a digital service signal, comprising;

• a receiving processor that receives contents, at least one application related to contents of the digital service signal, an NRT (Non-Real Time) service map table for signaling the contents and an application parameter table including metadata about the at least one application,
• wherein the receiving processor parses first filtering criteria information for filtering the contents from the NRT service map table and parsing second filtering criteria information for filtering content items used by the at least one application from the application parameter table;
• a PDI processor that receives a PDI table,
• wherein the PDI table includes at least one question element having attributes of a PDI question, and each of the at least one question element includes a question identification element identifying a PDI question and an answer element including an answer for the identified PDI question,
• wherein each of the first filtering criteria information and the second filtering criteria information includes at least one criterion element including a criterion identification element identifying a criterion and at least one criterion value element representing an answer for a PDI question corresponding to the identified criterion;
• an extracting processor that extracts the PDI question from the PDI table;
• a PDI answering processor that receives a PDI answer according to the extracted PDI question and storing the received PDI answer into the PDI table,
• wherein the receiving processor further parses a first filtering criteria information from the received NRT service map table, the first filtering criteria information including a first criterion on the basis of which to filter the contents, wherein the parsed first filtering criteria information comprises a criterion id of the first criterion and a criterion value of the first criterion;
• a filtering processor that queries whether the criterion id of the first criterion from the parsed first filtering criteria information matches the question identification element of the PDI question from the stored PDI table,
• wherein the filtering processor compares the criterion value of the first criterion from the parsed first filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the stored PDI table, in the event the querying indicates that the criterion id of the first criterion matches the question identification element of the PDI question from the stored PDI table,
• wherein the filtering processor filters the contents when the comparing indicates that the criterion value of the first criterion matches the PDI answer corresponding to the question identification element from the stored PDI table,
• wherein the receiving processor parses a second filtering criteria information from the received application parameter table, the second filtering criteria information including a second criterion on the basis of which to filter a content item used by a first application of the at least one application, wherein the second filtering criteria information comprises a criterion id of a second criterion and a criterion value of the second criterion,
• wherein the received application parameter table includes therein a first application element, representing a child element of the application parameter table comprising information about the first application, wherein the first application element is indicated in the received application parameter table as a first hierarchical sublevel sub element of the application parameter table, wherein the first application element comprises an identifier identifying the first application uniquely within a scope of the application parameter table,
• wherein the received application parameter table includes therein a first content item element, representing a child element of the first application element including information about the content item that are needed by the first application, wherein the first content item element is indicated in the received application parameter table as a first hierarchical sublevel sub element of the first application element at a second hierarchical sublevel of the application parameter table,
• wherein the received application parameter table includes therein the second filtering criteria information, represented as a child element of the first content item element, wherein the second filtering criteria information is indicated in the received application parameter table as a first hierarchical sublevel sub element of the first content item element at a third hierarchical sublevel of the application parameter table,
• wherein the filtering processor further queries whether the criterion id of the second criterion from the parsed second filtering criteria information matches the question identification element of the PDI question form the stored PDI table,
• wherein the filtering processor further compares the criterion value of the second criterion from the parsed second filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the stored PDI table, in the event the querying indicates that the criterion id of the second criterion matches the question identification element of the PDI question from the stored PDI table,
• wherein the filtering processor further filters the content item when the comparing indicates that the criterion value of the second criterion matches the PDI answer corresponding to the question identification element from the stored PDI table;
• and
• a content storing processor that downloads the filtered contents and the filtered content item.

An Apparatus for processing a digital service signal, comprising:

• a generator that generates contents, at least one application related to the contents, an NRT (Non-Real Time) service map table for signaling the contents and an application parameter table including metadata about the at least one application;
• a PDI table generator that generates a PDI table,
• wherein the PDI table includes at least one question element having attributes of a PDI question, and each of the at least one question element includes a question identification element identifying a PDI question and an answer element including an answer for the identified PDI question;
• a filtering criteria information generator that generates a first filtering criteria information including a first criterion on the basis of which to filter the contents, wherein the first filtering criteria information comprises a criterion id of the first criterion and a criterion value of the first criterion,
• wherein the criterion id of the first criterion is used for querying whether the criterion id of the first criterion from the first filtering criteria information matches the question identification element of the PDI question from the PDI table,
• wherein the criterion value of the first criterion is used for comparing the criterion value of the first criterion from the first filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the PDI table, in the event the querying indicates that the criterion id of the first criterion matches the question identification element of the PDI question from the PDI table,
• wherein the contents is filtered when the comparing indicates that the criterion value of the first criterion matches the PDI answer corresponding to the question identification element from the PDI table,
• wherein the filtering criteria information generator further generates a second filtering criteria information including a second criterion on the basis of which to filter a content item used by a first application of the at least one application, wherein the second filtering criteria information comprises a criterion id of a second criterion and a criterion value of the second criterion,
• wherein the application parameter table includes therein a first application element, representing a child element of the application parameter table comprising information about the first application, wherein the first application element is indicated in the application parameter table as a first hierarchical sublevel sub element of the application parameter table, wherein the first application element comprises an identifier identifying the first application uniquely within a scope of the application parameter table,
• wherein the application parameter table includes therein a first content item element, representing a child element of the first application element including information about the content item that are needed by the application, wherein the first content item element is indicated in the application parameter table as a first hierarchical sublevel sub element of the first application element at a second hierarchical sublevel of the application parameter table,
• wherein the application parameter table includes therein the second filtering criteria information, represented as a child element of the first content item element, wherein the second filtering criteria information is indicated in the application parameter table as a first hierarchical sublevel sub element of the first content item element at a third hierarchical sublevel of the application parameter table,
• wherein the criterion id of the second criterion is used for querying whether the criterion id of the second criterion from the second filtering criteria information matches the question identification element of the PDI question form the PDI table,
• wherein the criterion value of the second criterion is used for comparing the criterion value of the second criterion from the second filtering criteria information against the PDI answer corresponding to the PDI question identified by the question identification element from the PDI table, in the event the querying indicates that the criterion id of the second criterion matches the question identification element of the PDI question from the PDI table,
• wherein the content item is filtered when the comparing indicates that the criterion value of the second criterion matches the PDI answer corresponding to the question identification element from the PDI table,
• wherein the NRT service map table includes the first filtering criteria, wherein the application parameter table includes the second filtering criteria;
• and
• a transmitting processor that transmits the PDI table, the first filtering criteria information, the second filtering criteria, the at least one application and the contents.