COMMUNICATION TERMINAL AND WARNING INFORMATION RETRIEVAL METHOD

• US 20130201400A1
• Filed: 06/27/2012
• Published: 08/08/2013
• Est. Priority Date: 07/11/2011
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Sasaki, Makoto, Higuchi, Takeshi, Shikama, Hiroki
• Application Number:
  US13/880,188
• Publication Number:
  US 20130201400A1
• Time in Patent Office: Days
• US Class Current: 348/563
• CPC Class Codes: G08B 27/008 with transmission via TV or radio broadcast
• CPC Class Codes: H04H 20/59 for emergency or urgency
• CPC Class Codes: H04N 21/4882 for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 21/814 comprising emergency warnings arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 5/445 for displaying additional information H04N5/50 takes precedence
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]

Abstract

A communication terminal includes a receiver that receives a one-segment signal from a broadcasting station among plural broadcasting stations that provide terrestrial digital broadcasting, an output unit that outputs the one-segment signal received by the receiver to a user; a channel search unit that searches for a specific broadcasting station that transmits the one-segment signal including an auxiliary information signal which is likely to include warning information, among the one-segment signals which are transmitted from the corresponding broadcasting stations, and a determination unit that determines, subsequent to termination of viewing with respect to the broadcasting station which is selected by the user, whether the auxiliary information signal included in the one-segment signal received from the specific broadcasting station by the receiver includes the warning information. When the auxiliary information signal includes the warning information, the output unit outputs the warning information to the user.

Claims

1. A communication terminal comprising:

a receiver that receives a one-segment signal from a broadcasting station among plural broadcasting stations that provide terrestrial digital broadcasting;

an output unit that outputs the one-segment signal received by the receiver to a user;

a channel search unit that searches for a specific broadcasting station that transmits the one-segment signal including an auxiliary information signal which is likely to include warning information, among the one-segment signals which are transmitted from the corresponding broadcasting stations; and

a determination unit that determines, subsequent to termination of viewing with respect to the broadcasting station which is selected by the user, whether the auxiliary information signal included in the one-segment signal received from the specific broadcasting station by the receiver includes the warning information,

wherein, when the auxiliary information signal includes the warning information, the output unit outputs the warning information to the user.

2. The communication terminal according to claim 1,

wherein, when the one-segment signal including the auxiliary information signal which is likely to include the warning information is not received for greater than or equal to a constant time period, the channel search unit searches for the specific broadcasting station that transmits the one-segment signal including the auxiliary information signal which is likely to include the warning information.

3. The communication terminal according to claim 1,

wherein, if a broadcasting station identifier of the one-segment signal received by the receiver is changed when the determination unit determines presence or absence of the warning information, the channel search unit searches for the specific broadcasting station.

4. The communication terminal according to claim 1, further comprising:

a location information retrieval unit that retrieves location information of the communication terminal,

wherein, when a receiving area of the one-segment signal, the communication terminal being served in the receiving area, is changed, the channel search unit searches for the specific broadcasting station.

5. The communication terminal according to claim 1,

wherein, when more than one of the broadcasting stations are found which transmit the one-segment signals including the auxiliary information signals which are likely to include the warning information, the channel search unit reports, as the specific broadcasting station, the broadcasting station being selected among the more than one of the broadcasting stations based on receiving quality to the determination unit.

6. The communication terminal according to claim 1,

wherein, when the single broadcasting station is found which transmits the one-segment signal including the auxiliary information signal which is likely to include the warning information, the channel search unit reports, as the specific broadcasting station, the single broadcasting station to the determination unit.

7. A warning information retrieval method comprising steps of:

receiving a one-segment signal from a broadcasting station among plural broadcasting stations that provide terrestrial digital broadcasting, and outputting the one-segment signal to a user;

subsequent to termination of viewing with respect to the broadcasting station which is selected by the user, searching for a specific broadcasting station that transmits the one-segment signal including an auxiliary information signal which is likely to include warning information, among the one-segment signals which are transmitted from the corresponding broadcasting stations; and

determining whether the auxiliary information signal included in the one-segment signal received from the specific broadcasting station includes the warning information, and

outputting the warning information to the user when the auxiliary information signal includes the warning information.