The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that can enhance the accessibility for people with visual disabilities. The transmission device includes: a text-to-speech utterance metadata generation unit that generates text-to-speech utterance metadata about the text-to-speech utterance of display information as the producer intends; an electronic program information generation unit that generates electronic program information including the text-to-speech utterance metadata; and a transmission unit that transmits the electronic program information to the reception device capable of displaying the display information. The present technology can be applied, for example, to a transmitter capable of transmitting a digital broadcast signal.

The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that can enhance the accessibility for people with visual disabilities. The transmission device includes: a text-to-speech utterance metadata generation unit that generates text-to-speech utterance metadata about the text-to-speech utterance of display information as the producer intends; an electronic program information generation unit that generates electronic program information including the text-to-speech utterance metadata; and a transmission unit that transmits the electronic program information to the reception device capable of displaying the display information. The present technology can be applied, for example, to a transmitter capable of transmitting a digital broadcast signal.

The subject matter of this specification can be embodied in, among other things, a method that includes identifying metadata related to television programming. The method further includes sending search requests that include the identified metadata to a search system for selecting at least one portable program module. The method further includes in response to a first one of the search requests, receiving first search results from the search system that identify the selected portable program module and outputting a representation of the selected portable program module to a display device for presentation concurrently with the television programming. The method further includes in response to a second one of the search requests, receiving second search results from the search system that no longer identify the selected portable program module and ceasing the output of the representation of the selected portable program module.

The subject matter of this specification can be embodied in, among other things, a method that includes identifying metadata related to television programming. The method further includes sending search requests that include the identified metadata to a search system for selecting at least one portable program module. The method further includes in response to a first one of the search requests, receiving first search results from the search system that identify the selected portable program module and outputting a representation of the selected portable program module to a display device for presentation concurrently with the television programming. The method further includes in response to a second one of the search requests, receiving second search results from the search system that no longer identify the selected portable program module and ceasing the output of the representation of the selected portable program module.

Reception processing of broadcast content, in transmission of which an IP system is employed, is performed. An SDPT, in a header extension part of which service identification information and an SDP are arranged, in an SSC is transmitted from a broadcasting station. On a reception side, it becomes possible to acquire an intended SDPT from signaling information SSC easily at high speed by performing section filtering processing with respect to a received transport stream. Then, it is possible to access a stream of an intended channel at high speed based on an IP address and a port number described in an SDP stored in a header extension part of the acquired SDPT.

Reception processing of broadcast content, in transmission of which an IP system is employed, is performed. An SDPT, in a header extension part of which service identification information and an SDP are arranged, in an SSC is transmitted from a broadcasting station. On a reception side, it becomes possible to acquire an intended SDPT from signaling information SSC easily at high speed by performing section filtering processing with respect to a received transport stream. Then, it is possible to access a stream of an intended channel at high speed based on an IP address and a port number described in an SDP stored in a header extension part of the acquired SDPT.

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive broadcasting data on digital broadcasting is used. The broadcast receiving apparatus includes: a broadcast receiving unit configured to receive broadcasting data containing coded video data regarding a broadcasting program of the digital broadcasting and control information for the broadcasting program; a video decoding unit configured to decode the coded video data received by the broadcast receiving unit to reproduce program video information; a display unit configured to display the program video information reproduced by the video decoding unit; a communication unit configured to transmit viewing permission request data to a predetermined portable information terminal in a case where a broadcasting program that a user of the broadcast receiving apparatus desires to view is a program on which viewing limit is to be imposed, the communication unit being configured to receive response data from the portable information terminal, the response data responding to the viewing permission request data; an authentication information storing unit configured to store terminal identification information and authentication information, the predetermined portable information terminal being allowed to be identified by the terminal identification information; and a control unit. The control unit is configured to: control the video decoding unit or the display unit so as not to limit viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where the response data received by the communication unit indicates a display permission response and both of terminal identification information and authentication information contained in the display permission response respectively coincide with the terminal identification information and the authentication information stored in the authentication information storing unit; and control the video decoding unit or the display unit so as to limit the viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where any of the terminal identification information and the authentication information contained in the display permission response does not coincide with corresponding one of the terminal identification information and the authentication information stored in the authentication information storing unit even though the response data received by the communication unit indicates the display permission response.

A digital broadcast receiving apparatus capable of executing a function with a higher added value is provided. A broadcast receiving apparatus configured to receive broadcasting data on digital broadcasting is used. The broadcast receiving apparatus includes: a broadcast receiving unit configured to receive broadcasting data containing coded video data regarding a broadcasting program of the digital broadcasting and control information for the broadcasting program; a video decoding unit configured to decode the coded video data received by the broadcast receiving unit to reproduce program video information; a display unit configured to display the program video information reproduced by the video decoding unit; a communication unit configured to transmit viewing permission request data to a predetermined portable information terminal in a case where a broadcasting program that a user of the broadcast receiving apparatus desires to view is a program on which viewing limit is to be imposed, the communication unit being configured to receive response data from the portable information terminal, the response data responding to the viewing permission request data; an authentication information storing unit configured to store terminal identification information and authentication information, the predetermined portable information terminal being allowed to be identified by the terminal identification information; and a control unit. The control unit is configured to: control the video decoding unit or the display unit so as not to limit viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where the response data received by the communication unit indicates a display permission response and both of terminal identification information and authentication information contained in the display permission response respectively coincide with the terminal identification information and the authentication information stored in the authentication information storing unit; and control the video decoding unit or the display unit so as to limit the viewing of the broadcasting program that the user of the broadcast receiving apparatus desires to view in a case where any of the terminal identification information and the authentication information contained in the display permission response does not coincide with corresponding one of the terminal identification information and the authentication information stored in the authentication information storing unit even though the response data received by the communication unit indicates the display permission response.

A broadcast transmission method includes generating service data for a service, generating service layer signaling data, the service layer signaling data including first signaling data, second signaling data and third signaling data, the first signaling data including reference information referring to the second signaling data and the third signaling data, the second signaling data including a description of a component of the service, and the third signaling data including acquisition information of the component related to the service, and transmitting a broadcast signal including the service data and the service layer signaling data.

A broadcast transmission method includes generating service data for a service, generating service layer signaling data, the service layer signaling data including first signaling data, second signaling data and third signaling data, the first signaling data including reference information referring to the second signaling data and the third signaling data, the second signaling data including a description of a component of the service, and the third signaling data including acquisition information of the component related to the service, and transmitting a broadcast signal including the service data and the service layer signaling data.