Emergency alert message data structure, emergency alert message processing method and broadcast receiver
First Claim
1. A data structure of an emergency alert message comprising an emergency alert message syntax for informing a viewer of an occurrence of a state of emergency, the syntax including an alert priority field for determining processing of the emergency alert message when the message is received, wherein the alert priority field has a predetermined value which indicates a channel change to an emergency broadcast channel and a display of emergency alert contents in text form.
1 Assignment
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Accused Products
Abstract
An emergency alert message data structure, an emergency alert message processing method and a broadcast receiver are disclosed. When a state of emergency where a channel change to an emergency broadcast channel is required occurs, a transmitting stage includes information regarding the emergency broadcast channel and emergency alert contents in text form in an emergency alert message and transmits the resulting emergency alert message. A receiving stage receives the emergency alert message and determines whether the channel change to the emergency broadcast channel included in the emergency alert message is required. If the channel change to the emergency broadcast channel is determined to be required, the receiving stage changes the current channel to the emergency broadcast channel, and displays the emergency alert contents in text form included in the emergency alert message on a portion of a screen of the emergency broadcast channel in a scrolling manner. Therefore, the viewer can more accurately recognize the state of emergency through not only emergency alert broadcast of the emergency broadcast channel which is displayed as a moving image, but also the emergency alert contents which are scrolled on the screen.
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Citations
15 Claims
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1. A data structure of an emergency alert message comprising an emergency alert message syntax for informing a viewer of an occurrence of a state of emergency, the syntax including an alert priority field for determining processing of the emergency alert message when the message is received,
wherein the alert priority field has a predetermined value which indicates a channel change to an emergency broadcast channel and a display of emergency alert contents in text form.
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2. A method for processing an emergency alert message, comprising the steps of:
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(a) receiving the emergency alert message including information regarding an emergency broadcast channel to which a current channel is to be compulsorily changed and emergency alert contents in text form in the emergency alert message, when a state of emergency where the channel change to the emergency broadcast channel is required occurs;
(b) parsing a channel information field in the received emergency alert message to extract the emergency broadcast channel from the message, and changing the current channel to the extracted emergency broadcast channel; and
(c) displaying the emergency alert contents in text form included in the received emergency alert message on a screen of the emergency broadcast channel. - View Dependent Claims (3, 4, 5, 6)
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7. A method for processing an emergency alert message, comprising the steps of:
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(a) determining whether a channel change to an emergency broadcast channel is required, if an emergency alert message for informing a viewer of an occurrence of a state of emergency is received;
(b) if the channel change to the emergency broadcast channel is determined to be required at the step (a), parsing a channel information field in the received emergency alert message to extract the emergency broadcast channel from the message, and changing a current channel to the extracted emergency broadcast channel;
(c) determining whether emergency alert contents in text form are present in the received emergency alert message; and
(d) displaying the emergency alert contents in text form on a screen of the emergency broadcast channel in a scrolling manner if the emergency alert contents are determined to be present in the received emergency alert message at the step (c). - View Dependent Claims (8, 9)
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10. A cable broadcast receiver comprising:
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an in-band signal processor for receiving an audio/video (AN) broadcasting signal and an emergency alert message over in-band;
a Point Of Deployment (POD) module for receiving a program and channel associated information, and an emergency alert message over Out-Of-Band (OOB); and
an emergency alert message controller for parsing the emergency alert message received by any one of the in-band signal processor and the POD module to determine whether a channel change to an emergency broadcast channel included in the emergency alert message is required, and, if the channel change to the emergency broadcast channel is determined to be required, changing a current channel to the emergency broadcast channel and displaying emergency alert contents in text form on a screen of the emergency broadcast channel if the emergency alert contents are included in the emergency alert message. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification