Transmission method and receiving apparatus of emergency information which is frequency-multiplexed on an FM broadcast radio wave

An emergency information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including emergency information, and reproducing said emergency information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing emergency information included in a data packet in said block received by said intermittent reception means;
• and
• emergency information output means for reproducing received data to output said emergency information when said detection means detects said predetermined data;
• wherein data to be transmitted by said data transmission system is frequency-multiplexed on an FM broadcast radio wave;
• and
• said intermittent reception means includes means for receiving an FM multiplexed broadcast wave.

An emergency information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including emergency information, and reproducing said emergency information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing emergency information included in a data packet in said block received by said intermittent reception means;
• and
• emergency information output means for reproducing received data to output said emergency information when said detection means detects said predetermined data;
• wherein a data packet includes prefix data for defining said data packet and a data block, said prefix data having a service identification area for identifying a data content, with said predetermined data being set in said service identification area;
• and
• said detection means detects said predetermined data in said service identification area.

An emergency information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including emergency information, and reproducing said emergency information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing emergency information included in a data packet in said block received by said intermittent reception means;
• and
• emergency information output means for reproducing received data to output said emergency information when said detection means detects said predetermined data;
• wherein a data packet includes prefix data for defining said data packet and a data block, said prefix data having a data group number area containing a program number and a page number, said predetermined data being set in said data group number area;
• and wherein
• said detection means detects said predetermined data in said data group number area.

An information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including information, and reproducing said information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing information included in a data packet in said block received by said intermittent reception means;
• and
• information output means for reproducing received data to output said information when said detection means detects said predetermined data;
• wherein audio information is multiplexed on said frame data;
• and
• wherein said apparatus further comprises:
• audio information detection means for detecting specific data indicative of presence of audio information included in a block received by said intermittent reception means;
• and
• audio information reception means for receiving audio emergency information and producing a sound when said audio emergency information detection means detects transmission of said audio information.

An emergency information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including emergency information, and reproducing said emergency information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing emergency information included in a data packet in said block received by said intermittent reception means;
• and
• emergency information output means for reproducing received data to output said emergency information when said detection means detects said predetermined data;
• wherein said intermittent reception means includes:
• reception means for substantially performing a continuous receiving operation;
• and
• means which is enabled to acquire and output data received by said reception means, when said detection means detects specific data.

An emergency information receiving apparatus for receiving frame data including a plurality of blocks each including data packets and parity packets, at least one of said blocks including emergency information, and reproducing said emergency information included in said frame data, said apparatus comprising:

• intermittent reception means for intermittently receiving a block of a specific number;
• detection means for detecting predetermined data representing emergency information included in a data packet in said block received by said intermittent reception means;
• and
• emergency information output means for reproducing received data to output said emergency information when said detection means detects said predetermined data;
• wherein said intermittent reception means includes:
• timing determination means for determining a timing at which a block with said specific number is transmitted;
• and
• means for receiving said block at said timing determined by said timing determination means.