A reception apparatus comprising: a reception unit configured to receive broadcast content transmitted by a broadcast waves of digital broadcasting; a first obtaining unit configured to obtain data-broadcast content and transmission data other than data-broadcast content, the transmission data being transmitted in a data carousel transmission scheme by the broadcast wave; and a control unit configured to control an operation based on the obtained transmission data; wherein the transmission data is control information for controlling an operation of an application program executed in conjunction with the broadcast content; and the control unit is configured to control the operation of the application program distributed via a network in accordance with the control information; wherein the reception apparatus further comprises: a second obtaining unit configured to obtain identification information on a data-constituting object, the data-constituting object being configured to transmit the control information, the identification information being described in a data descriptor different from a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave, wherein the first obtaining unit is configured to obtain the control information from the data-constituting object identified by the obtained identification information, characterized in that, in case the control information specified as default and described in a first region of a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave is not transmitted, information indicating a transmission scheme of the control information is described as additional information in said first region or information indicating priority of activation between the application program and the data-broadcast content is described as additional information in said first region. a reception unit configured to receive broadcast content transmitted by a broadcast waves of digital broadcasting; a first obtaining unit configured to obtain data-broadcast content and transmission data other than data-broadcast content, the transmission data being transmitted in a data carousel transmission scheme by the broadcast wave; and a control unit configured to control an operation based on the obtained transmission data; wherein the transmission data is control information for controlling an operation of an application program executed in conjunction with the broadcast content; and the control unit is configured to control the operation of the application program distributed via a network in accordance with the control information; wherein the reception apparatus further comprises: a second obtaining unit configured to obtain identification information on a data-constituting object, the data-constituting object being configured to transmit the control information, the identification information being described in a data descriptor different from a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave, wherein the first obtaining unit is configured to obtain the control information from the data-constituting object identified by the obtained identification information, characterized in that, in case the control information specified as default and described in a first region of a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave is not transmitted, information indicating a transmission scheme of the control information is described as additional information in said first region or information indicating priority of activation between the application program and the data-broadcast content is described as additional information in said first region. a second obtaining unit configured to obtain identification information on a data-constituting object, the data-constituting object being configured to transmit the control information, the identification information being described in a data descriptor different from a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave, wherein the first obtaining unit is configured to obtain the control information from the data-constituting object identified by the obtained identification information, characterized in that, in case the control information specified as default and described in a first region of a data-encoding-scheme descriptor in a data elementary stream description region of a PMT (Program Map Table) transmitted by the broadcast wave is not transmitted, information indicating a transmission scheme of the control information is described as additional information in said first region or information indicating priority of activation between the application program and the data-broadcast content is described as additional information in said first region.