Receiving apparatus, transmitting apparatus, and data processing method
This technology relates to a receiving apparatus, a transmitting apparatus, and a data processing method for displaying emergency information communicated in an emergency at appropriate positions. The receiving apparatus acquires metadata transmitted by a digital broadcast signal, the metadata including first emergency information required to be announced urgently and display position information indicating whether there is second emergency information embedded in uncompressed video data, the display position information further indicating, if the second emergency information is embedded in the uncompressed video data, the display position of the second emergency information on a screen. The receiving apparatus processes the metadata to determine whether the second emergency information is embedded in the uncompressed video data and, if the second emergency information is embedded in the uncompressed video data, displays the first emergency information at a position different from the display position of the second emergency information on the screen. This technology applies to television receivers, for example.
1. A receiving apparatus comprising:
circuitry configured to:
receive a digital broadcast signal including video data having emergency information embedded therein;
acquire emergency data transmitted in the digital broadcast signal, the emergency data including (i) first emergency information indicating a presence of the emergency information embedded in the video data and (ii) second emergency information indicating whether or not to maintain the video data with the emergency information embedded therein on a screen;
process the emergency data to determine whether or not to maintain the video data; and
display the video data on the screen in accordance with the determination, wherein the video data having the emergency information embedded therein is scaled down when the second emergency information indicates not to maintain the video data such that the scaled down video data having the emergency information embedded therein does not overlap additional information included on the screen.
2. The receiving apparatus according to claim 1 , wherein the first emergency information is emergency alert service identification information.
3. The receiving apparatus according to claim 2 , wherein the second emergency information includes layout information.
4. The receiving apparatus according to claim 1 , wherein the digital broadcast signal complies with an internet protocol (IP) transmission scheme.
5. The receiving apparatus according to claim 1 , wherein the emergency information embedded in video data includes text information.
6. The receiving apparatus according to claim 5 , wherein the determination of whether or not to maintain the video data is based on a determination of whether a description of a position of the text information is provided for a data element.
7. The receiving apparatus according to claim 1 , wherein the additional information is not scaled down with the video data and the emergency information.
8. A data processing method for use with a receiving apparatus, the data processing method comprising:
causing the receiving apparatus to receive a digital broadcast signal including video data having emergency information embedded therein;
causing the receiving apparatus to acquire emergency data transmitted in the digital broadcast signal, the emergency data including (i) first emergency information indicating a presence of the emergency information embedded in the video data and (ii) second emergency information indicating whether or not to maintain the video data with the emergency information embedded therein on a screen;
causing the receiving apparatus to process the emergency data to determine whether or not to maintain the video data; and
causing the receiving apparatus to display the video data on the screen in accordance with the determination, wherein the video data having the emergency information embedded therein is scaled down when the second emergency information indicates not to maintain the video data such that the scaled down video data having the emergency information embedded therein does not overlap additional information included on the screen.
9. A transmitting apparatus comprising:
circuitry configured to:
generate emergency data including (i) first emergency information indicating a presence of emergency information embedded in video data and (ii) second emergency information indicating whether or not to maintain the video data on a screen; and
transmit, in a digital broadcast signal, the video data having the emergency information embedded therein, wherein the video data having the emergency information embedded therein is scaled down when the second emergency information indicates not to maintain the video data such that the scaled down video data having the emergency information embedded therein does not overlap additional information included on the screen.
10. The transmitting apparatus according to claim 9 , wherein the first emergency information is emergency alert service identification information.
11. The transmitting apparatus according to claim 10 , wherein the second emergency information includes layout information.
12. The transmitting apparatus according to claim 9 , wherein the digital broadcast signal complies with an IP transmission scheme.
13. A data processing method for use with a transmitting apparatus, the data processing method comprising:
causing the transmitting apparatus to generate emergency data including (i) first emergency information indicating a presence of emergency information embedded in video data and (ii) second emergency information indicating whether or not to maintain the video data on a screen; and
causing the transmitting apparatus to transmit, in a digital broadcast signal, the video data having the emergency information embedded therein, wherein the video data having the emergency information embedded therein is scaled down when the second emergency information indicates not to maintain the video data such that the scaled down video data having the emergency information embedded therein does not overlap additional information included on the screen.