KR100742347B1 - Channel searching cancel method of digital multimedia broadcasting receiver - Google Patents

Abstract

A channel search cancellation method in a DMB(Digital Multimedia Broadcasting) receiving apparatus is provided to cancel channel search while searching a channel and inform a user that the channel search is cancelled to reduce the power consumption of the DMB receiving apparatus and improve usability. A DMB receiving unit(110) searches the first channel including a DMB signal corresponding to a certain broadcasting program, and receives the DMB signal. A key input unit(160) receives a channel search cancellation command for canceling search for the first channel. If the channel search cancellation command is received, a UI(User Interface) generating unit(150) generates a message for informing that the channel search is being cancelled. An AV processing unit(130) processes the message outputted from the UI generating unit(150) to be displayed on a screen. A control unit(180) controls the DMB receiving unit(110) to cancel the search for the first channel according to the channel search cancellation command, and controls the UI generating unit(150) and the AV processing unit(130) to generate the message and display the generated message on the screen.

Description

Channel searching cancel method of digital multimedia broadcasting receiver}

1 is a view showing a schematic configuration of a digital multimedia broadcasting receiver according to an embodiment of the present invention;

2A to 2C are views for explaining a channel search canceling process of a digital multimedia broadcasting receiver according to an embodiment of the present invention;

3 is a flowchart illustrating a channel search canceling method of a digital multimedia broadcasting receiver according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: antenna 110: DMB receiver

120: decoder 130: AV processor

140: sound output unit 145: image output unit

150: UI generation unit 160: key input unit

170: memory unit 180: control unit

The present invention relates to a method for canceling channel search of a digital multimedia broadcasting (DMB) receiving apparatus. More particularly, when canceling channel search during a predetermined channel search, the user is informed that the channel search is being canceled. A method for canceling channel search in a digital multimedia broadcasting receiver.

In recent years, with the development of digital broadcasting technology, digital audio broadcasting (DAB) or digital multimedia broadcasting is being implemented in earnest. Digital multimedia broadcasting is a broadcasting method that multiplexes compressed digital broadcasting data through a high efficiency compression algorithm such as a moving picture expert group (MPEG) and then transmits it to a digital multimedia broadcasting receiver through a satellite or terrestrial repeater.

The digital broadcast data transmitted here is divided into video data, audio data, and the like, compressed, divided into transport packets (TPs) of a predetermined unit, and then multiplexed and transported into transport streams (TS). In each transport stream, digital broadcast data for a plurality of programs are multiplexed, and a user selects and watches an arbitrary program among them.

In addition, a user using the digital multimedia broadcasting receiver can change a channel by operating various keys provided in the digital multimedia broadcasting receiver. At this time, when the user wants to change the channel search to another channel while searching for a predetermined channel, the user must wait until the channel search is completed. In addition, when a channel search time for searching a predetermined channel becomes longer, it is impossible to cancel the channel search and return to the previous channel, which makes the user uncomfortable using the digital multimedia broadcasting receiver.

Accordingly, an object of the present invention is to cancel the channel search during channel search and to inform the user that the channel search is being canceled, in order to reduce power consumption and improve usability of the digital multimedia broadcast receiver. It provides a way to cancel.

The digital multimedia broadcasting receiver according to the present invention for achieving the above object receives a digital multimedia broadcasting signal by searching for a first channel including a digital multimedia broadcasting (DMB) signal corresponding to a predetermined broadcasting program. A DMB receiver, a key input unit for receiving a channel search cancel command for canceling the search for the first channel, and a UI (User Interface) generation unit for generating a message indicating that the channel search is canceled when the channel search cancel command is inputted And a video processor for signal processing to display the message output from the UI generator on the screen, and controlling the DMB receiver to cancel the search for the first channel according to the channel search cancel command. The UI generation unit and image to generate a message indicating that the channel search is canceled and to display on the screen A control unit for controlling the video processing unit.

Here, when the channel search cancellation for the first channel is completed, the controller receives the DMB receiver to receive a digital multimedia broadcast signal included in the searched second channel before the search for the first channel is performed. To control.

The controller may be further configured to cancel the channel search for the first channel when the state before the search for the first channel is performed is a weak electric field in which there is no searched channel. It is preferable to control the UI generator and the video processor to generate and output a message indicating that the electric field is about.

The apparatus for receiving digital multimedia broadcasting according to the present invention further includes a memory unit in which a frequency corresponding to the first channel is stored, and the control unit performs the channel search for the first channel and stores the first stored in the memory unit. The frequency corresponding to the channel is updated to a frequency corresponding to the first channel currently being searched.

On the other hand, the channel search cancellation method of the digital multimedia broadcasting receiving apparatus according to the present invention comprises the steps of: searching for a first channel including a digital multimedia broadcasting (DMB) signal corresponding to a predetermined broadcast program; Receiving a channel search cancel command to cancel a search for the channel, generating a message indicating that the channel search is canceled when the channel search cancel command is input, and outputting a message indicating that the channel search is canceled It includes a step.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

1 is a view showing a schematic configuration of a digital multimedia broadcasting receiver according to an embodiment of the present invention.

Referring to FIG. 1, the digital multimedia broadcasting receiver includes an antenna 100, a digital multimedia broadcasting (DMB) receiver 110, a decoder 120, an audio video (AV) processor 130, and an audio output unit 140. ), An image output unit 145, a user interface (UI) generator 150, a key input unit 160, a memory unit 170, and a controller 180.

The DMB receiver 110 searches for a channel selected by the user through the antenna 100 and receives a digital multimedia broadcasting signal included in the selected channel. The digital multimedia broadcasting signal is converted into an original transport stream (TS), and then output by performing error correction on the transport stream.

The decoder 120 demultiplexes a transport stream output from the DMB receiver 110 and extracts transport packets (TPs) corresponding to a broadcast program to be watched. At this time, after descrambled the encrypted digital multimedia broadcasting signal, it is decoded into a video signal and an audio signal and output.

The AV processor 130 processes the video signal to output the video signal output from the decoder 120 to the screen. In addition, the sound signal output from the decoder unit 120 is processed and output. In addition, the on-screen display (OSD) menu and various messages generated by the UI generation unit 150 to be described later are processed as a video signal or separately on the screen.

The sound output unit 140 amplifies and outputs a sound signal output from the AV processor 130 into a sound having a predetermined size. The image output unit 145 scales the image signal output from the AV processor 130 and outputs the image signal to the screen.

The UI generating unit 150 generates an OSD menu for controlling the digital multimedia broadcasting receiver. In addition, a message indicating that the channel is being searched or a message indicating that the digital multimedia broadcasting receiver is about electric field is output. And, according to the present invention, when a channel search cancel command is received through the key input unit 160 to be described later, it generates a message indicating that the channel search is canceled.

The key input unit 160 includes various operation keys necessary for controlling the digital multimedia broadcasting receiver, and a user may input a channel search cancel command by operating various operation keys provided in the key input unit 160.

A frequency corresponding to each channel is stored in the memory unit 170. When a change occurs in a frequency corresponding to each channel, the frequency for the channel currently being searched by the controller 180 is updated and stored.

When the channel search cancel command for the channel currently being searched is input through the key input unit 160, the controller 180 cancels the channel search and provides the DMB receiver 110 to receive a digital multimedia broadcasting signal corresponding to the previous channel. To control. At the same time, the UI generating unit 150 is controlled to generate a message indicating that the channel search is canceled, and the digital multimedia broadcasting signal corresponding to the previous channel is received through the DMB receiving unit 110, and the image output unit 145 is received. The AV processor 130 is controlled so that a message indicating that the channel search is canceled is output to the image output unit 145 until output.

2A to 2C are diagrams for describing a channel search canceling process of a digital multimedia broadcasting receiver according to an embodiment of the present invention.

Referring to FIG. 2A, the screen 200 displays a first icon 210 indicating that the digital multimedia broadcasting receiver is in a broadcast receiving mode and a second icon 220 indicating battery remaining of the digital multimedia broadcasting receiver. do. In addition, a channel search message 230 indicating that the selected channel is being searched is displayed. At this time, when the user inputs a channel search cancel command through the key input unit 160, as shown in FIG. 2B, a message 240 of “Cancel channel search canceling” is displayed on the screen 200.

When the channel search cancellation is completed and reception of the digital multimedia broadcasting signal corresponding to the channel before the channel search is completed, the broadcast program corresponding to the previous channel is displayed on the screen 200 together with the channel name as shown in FIG. 2C.

3 is a flowchart illustrating a channel search canceling method of a digital multimedia broadcasting receiver according to an embodiment of the present invention.

Referring to FIG. 3, first, when a channel search command is received through the key input unit 160 (S300), the controller 180 controls the DMB receiver 110 to search for a channel while changing the frequency of the found channel. In operation S310, the frequency of the channel is updated and stored in the memory unit 170.

At this time, when a channel search cancel command is received through the key input unit 160 (S320), the UI generation unit controls the DMB receiver 110 to cancel the channel search and generates a message indicating that the channel search is canceled. The controller 150 outputs a message indicating that the channel search is canceled (S330).

Then, the DMB receiver 110 controls the DMB receiver 110 to return to the previous channel to receive the digital multimedia broadcasting signal corresponding to the previous channel, or when the previous state is a weak electric field, generates a message indicating that the electric field is weak. 150, a message informing that the weak electric field is displayed is output to the screen (S340).

On the other hand, when the channel search cancel command is not received, the controller 180 controls the decoder 120 and the AV processor 130 to output information about the found channel and the broadcast program (S350). In this case, when the digital multimedia broadcasting signal does not exist in the found channel, the UI generator 150 is controlled to generate a message indicating that there is no broadcast program and is output to the screen.

Through the above process, the channel search can be canceled.

As described above, according to the present invention, by canceling the channel search during the channel search and notifying the user through a message that the channel search is being canceled, the user can quickly return to the previous channel during the channel search to use the digital multimedia broadcasting receiver. This can be improved and unnecessary power consumption can be reduced.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Anyone of ordinary skill in the art of various modifications can be made, of course, such changes are within the scope of the claims.

Claims (5)

A DMB receiver searching for a first channel including a digital multimedia broadcasting (DMB) signal corresponding to a predetermined broadcast program and receiving the digital multimedia broadcasting signal; A key input unit receiving a channel search cancel command to cancel the search for the first channel; A user interface (UI) generation unit for generating a message informing that the channel search cancellation command is inputted when the channel search cancel command is input; A video processor configured to process a signal to display the message output from the UI generator on a screen; And According to the channel search cancel command, the UI generator and the control unit to control the DMB receiver to cancel the search for the first channel, and to generate a message indicating that the channel search is canceled and to display on the screen And a control unit for controlling the video processing unit. The method of claim 1, The control unit, When the channel search cancellation for the first channel is completed, the DMB receiver is controlled to receive a digital multimedia broadcasting signal included in the searched second channel before the search for the first channel is performed. Digital multimedia broadcasting receiver. The method of claim 1, The control unit, When the state before the search for the first channel is performed is a weak electric field state in which the search-completed channel does not exist, when the channel search cancellation for the first channel is completed, it indicates that the weak electric field state is established. And controlling the UI generator and the video processor to generate and output a message. The method of claim 1, And a memory unit in which a frequency corresponding to the first channel is stored. The control unit, While performing the channel search for the first channel, the digital multimedia, characterized in that for updating the frequency corresponding to the first channel stored in the memory unit to the frequency corresponding to the first channel currently being searched (update) Broadcast receiver. Searching for a first channel including a digital multimedia broadcasting (DMB) signal corresponding to a predetermined broadcast program; Receiving a channel search cancel command to cancel the search for the first channel; When the channel search cancel command is input, generating a message indicating that the channel search cancelation is in progress; And And outputting a message indicating that the channel search is canceled to the screen.

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