Apparatus and method for transmitting and receiving disaster information
AssigneeElectronics and Telecommunications Research Institute
InventorsYou Seok LEE, Kwanwoong RYU, Heung Mook KIM, Jin Hyuk SONG, Jae Hyun SEO, Ho Min EUM
Life of this patent
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Abstract
When a disaster occurs, a disaster information transmitting apparatus generates disaster information, spreads the disaster information with a spreading code, modulates the spread disaster information, and transmits the modulated disaster information using a guard band of a broadcasting frequency band.
Claims19
A disaster information transmitting apparatus, comprising:
- a disaster information generator that generates disaster information;
- a spreading unit that spreads the disaster information with a spreading code;
- a modulation unit that modulates spread disaster information;
- and
- a transmitting unit that transmits modulated disaster information using a guard existing between two adjacent broadcasting frequency channels.
A disaster information receiving apparatus, comprising:
- a receiving unit that receives a signal comprising transmitted disaster information using a guard band existing between two adjacent broadcasting frequency channels from a disaster information transmitting apparatus;
- a demodulation unit that demodulates a received signal;
- a despreading unit that despreads a demodulated signal using a despreading code;
- and
- a disaster information analysis unit that extracts the disaster information from a despread signal.
A method of transmitting disaster information in a disaster information transmitting apparatus, the method comprising:
- generating disaster information;
- spreading the disaster information with a spreading code;
- modulating the spread disaster information;
- and
- transmitting the modulated disaster information using a guard band of a broadcasting frequency band.
A method of receiving disaster information in a disaster information receiving apparatus, the method comprising:
- receiving a signal comprising disaster information that is transmitted using a guard band of a broadcasting frequency band from the disaster information transmitting apparatus;
- demodulating the received signal;
- despreading the demodulated signal using a code which used for spreading;
- and
- extracting the disaster information from the despread signal.
Dependencies are inferred from the claim text.