KR101327646B1 - Apparatus and Method of play control in portable device - Google Patents

Abstract

The present invention provides a reproducing control apparatus and method in a mobile terminal for smoothly operating a broadcast signal output using a buffer and a speed sensor.

In accordance with another aspect of the present invention, there is provided a playback control apparatus of a portable terminal, comprising: a DMB receiver configured to receive a broadcast signal; Output means for converting and outputting a broadcast signal input through the DMB receiving unit into a digital signal; A key input unit configured to receive a channel change and power on / off command from a user; A memory unit for temporarily storing broadcast output data; A speed detecting unit detecting a moving speed of the vehicle; And continuously storing the broadcast output data and storing the position when the screen is cut off so that the broadcast is reproduced from the corresponding position using the broadcast data stored in the memory unit when the screen is resumed.

DMB, speed detection, broadcast signal, broadcast signal playback

Description

Apparatus and Method of play control in portable device

1 is a block diagram showing the configuration of a portable terminal according to an embodiment of the present invention.

2 is a flowchart illustrating a process of storing data in butter by receiving a broadcast according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a process of determining an output position of a broadcast signal according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating broadcast output control according to vehicle speed according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100 ... DMB receiver 150 ... output means

152 .... A / D converter 154 .... demodulator

156 .... Audio Decoder 158 .... Video Decoder

110 .... key input 112 .... control

Memory section 116 Speed detection section

118 .... Interface part

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling playback in a portable terminal using a ring buffer and a speed sensor in a portable terminal having a digital multimedia broadcasting (DMB) set.

DMB is capable of receiving high-quality video and audio from unidirectional passive radios, as well as displaying various information and data services and bidirectional communication functions. Terrestrial DMB using AM / FM, VHF and UHF bands And satellite DMB using the 2.6 GHz band.

These DMB receivers will present an era of future mobile broadcasting that enables users to enjoy high-quality video and audio while traveling at home, walking, and traveling by car or train.

In particular, most people who own a vehicle are equipped with a DMB receiver to watch a broadcast on the go.

At this time, the user may take a different action while receiving the broadcast, and may not be able to watch the broadcast unavoidably, or may be difficult to watch the broadcast when operating at a high speed such as on a highway.

In this case, there is no way to check the broadcast contents that have passed by a moment, and when the user cannot watch for a long time, the gap of the part that is not seen becomes large.

In addition, you may encounter dangerous moments while trying to watch DMB broadcasts while driving too fast.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and method for controlling playback in a portable terminal that enables a user to watch a broadcast safely while driving a vehicle.

Another object of the present invention is to provide an apparatus and method for controlling playback in a portable terminal that enables a user to watch a broadcast from a time when a screen is blocked.

It is still another object of the present invention to provide an apparatus and method for controlling playback in a portable terminal for controlling broadcasting viewing in accordance with a vehicle speed so as to safely watch the broadcasting.

In accordance with an aspect of the present invention, there is provided a playback control apparatus of a portable terminal, comprising: a DMB receiver configured to receive a broadcast signal; Output means for converting and outputting a broadcast signal input through the DMB receiving unit into a digital signal; A key input unit configured to receive a channel change and power on / off command from a user; A memory unit for temporarily storing broadcast output data; A speed detecting unit detecting a moving speed of the vehicle; And continuously storing the broadcast output data and storing the position when the screen is cut off so that the broadcast is reproduced from the corresponding position using the broadcast data stored in the memory unit when the screen is resumed.

Preferably, the memory unit serves as a ring buffer to continuously store broadcast output data, and deletes all stored contents and stores new data when the user changes a channel or turns off the power. It is done.

Preferably, the control unit is controlled to play from the corresponding position when the screen is resumed by recording the broadcast time when the screen is blocked or the user arbitrarily blocked the screen to become a certain speed or more according to the vehicle speed detected by the speed sensor. It is done.

A reproduction control method in a portable terminal according to the present invention for achieving the above object comprises the steps of receiving a broadcast signal and recording it in a ring buffer; Outputting a broadcast signal using data recorded in the ring buffer; Checking the next output from the ring buffer and updating the final output position when the screen is blocked; And reproducing from the final output position when the screen block is released.

Preferably, when the vehicle speed is more than a certain speed, the screen is blocked, and if the lower again below the predetermined speed further comprises the step of releasing the screen block to play from the final output position, characterized in that the playback control method in a mobile terminal.

Preferably, receiving and recording the broadcast signal into a ring buffer comprises: receiving a broadcast; Sequentially writing to the ring buffer; Determining whether broadcast data can be stored in the ring buffer; Deleting oldest data when there is no more space to write in the ring buffer as a result of the determination; Determining whether a channel change command is input; And deleting all contents of the ring buffer when a channel change command is input as a result of the determination.

The apparatus and method for controlling playback in a mobile terminal according to an embodiment of the present invention as described above will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of a portable terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the portable terminal includes a DMB receiver 100 for receiving a broadcast signal, an output means 150 for converting a broadcast signal input through the DMB receiver 100 into a digital signal, and a channel from a user. The key input unit 110 for receiving the change and power on / off command, the memory unit 114 temporarily storing the broadcast output data, the speed detector 116 for detecting the moving speed of the vehicle, and continuously storing the broadcast output data. And controlling the controller 112 to store the location when the screen is blocked and to reproduce the broadcast from the corresponding location by using the broadcast data stored in the memory unit 114 when the screen is restarted.

The interface unit 118 is further provided to mount a memory to be used as a buffer.

The output means 150 includes an A / D converter 152 for converting a received analog broadcast signal into a digital signal, a demodulator 15 for extracting a modulated wave and restoring an original signal, and an audio signal among the demodulated signals. And an audio decoder 156 and a video decoder 158 for decoding the video signal.

The memory unit 114 is a general memory or a cache memory, and serves as a ring buffer to delete old data when there is no more space to store data.

The controller 112 controls to delete all temporary data stored in the memory when a channel change command is input from the user.

Referring to the operation of the present invention through the above configuration as follows.

When a broadcast watching command is input from the user while moving the vehicle, the broadcasting signal is received through the DMB receiving unit 100 and then converted into a digital signal through the A / D converter 152.

At this time, broadcast output data is continuously stored in the memory unit 114.

At the same time, the converted digital signal is demodulated to the original signal through the demodulator 154 and output through the audio decoder 156 and the video decoder 158.

When the user arbitrarily blocks the screen to temporarily stop watching the broadcast, the controller 112 detects this and checks the blocked broadcast signal output position.

When the user releases the screen block for viewing the broadcast again, the user outputs the block screen using the output data continuously stored in the memory 114.

In addition, when the user is traveling at a predetermined speed or more while driving the vehicle, the speed detector 116 detects this and notifies the controller 112 that the reference speed is exceeded.

The control unit 112 receives the speed information and controls to block the screen output.

When the screen is stopped and the screen is resumed again, the control is performed to memorize the position to be output. When the vehicle goes down below a certain speed, the screen is automatically resumed to play from the blocked broadcast output position.

2 is a flowchart illustrating a process of storing data in butter by receiving a broadcast according to an exemplary embodiment of the present invention.

Referring to FIG. 2, when a broadcast viewing command is input from a user, reception of a broadcast is started (S200).

Most mobile terminals have various functions added to them, so when a user enters a broadcast viewing state while playing music or playing a video, it is time.

When broadcast reception is started, broadcast output data is recorded in the ring buffer in order (S202).

At this time, when one channel is watched for a long time, the capacity of the buffer memory is insufficient, and it is checked whether the storage space of the ring butter is insufficient during the data storage (S204).

If it is determined in step 204 that the storage space is insufficient, the oldest data is deleted (S206).

When a channel change command is input from the user (S208), all data stored in the ring buffer is deleted and new data is stored (S210).

3 is a flowchart illustrating a process of determining an output position of a broadcast signal according to an exemplary embodiment of the present invention.

Referring to FIG. 3, when the user arbitrarily blocks the screen or the screen is blocked when the vehicle is over a certain speed (S300), the next output position is obtained from the ring buffer (S302).

The final output position is updated using the blocking time point information (S304).

4 is a flowchart illustrating broadcast output control according to a vehicle speed according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when a user watches a broadcast while driving a vehicle, the vehicle speed is continuously measured using a speed sensor (S400).

In general, when a driver detects a driving speed that is dangerous to watch a broadcast while driving (S402), the screen is blocked (S404).

At this time, the broadcast signal is continuously received and stored in the ring buffer.

If the vehicle runs again at a predetermined speed or less (S406), the blocked screen is released (S408).

The broadcast signal is continuously output from the time point at which it is blocked by using the stored broadcast output data.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It can be implemented. The scope of the present invention is defined by the appended claims, and all differences within the scope of the claims are to be construed as being included in the present invention.

According to the present invention, when the screen is blocked and the screen is unblocked, the broadcast output is possible from the corresponding position when the screen is blocked, thereby increasing the convenience of the user.

According to the present invention, when a certain speed is exceeded during the movement of the vehicle, the screen is automatically cut off, and when the speed is lower than the predetermined speed again, the screen is resumed and outputted from the corresponding position, thereby allowing the driver to watch the broadcast safely.

Claims (6)

A DMB receiver which receives a broadcast signal; Output means for converting and outputting a broadcast signal input through the DMB receiving unit into a digital signal; A key input unit configured to receive a channel change and power on / off command from a user; A memory unit for temporarily storing broadcast output data; A speed detecting unit detecting a moving speed of the vehicle; And And a control unit that continuously stores the broadcast output data and stores the position when the screen is blocked, thereby reproducing the broadcast from the corresponding position using the broadcast data stored in the memory unit when the screen is resumed. controller. The method of claim 1, The memory unit serves as a ring buffer to continuously store broadcast output data. When the user changes a channel or turns off the power, the memory unit deletes all stored contents and stores new data. Playback control device in a mobile terminal. The method of claim 1, The control unit is characterized in that a certain speed is higher than the predetermined speed according to the vehicle speed detected by the speed detection unit to block the screen or record the broadcast time when the user arbitrarily blocked the screen to control to play from the corresponding position when the screen resumes Playback control device in the terminal. Receiving a broadcast signal and writing it to a ring buffer; Outputting a broadcast signal using data recorded in the ring buffer; Checking the next output from the ring buffer and updating the final output position when the screen is blocked; And reproducing from the final output position when the screen block is released. 5. The method of claim 4, If the vehicle speed exceeds a certain speed, the screen is blocked, and when the speed drops below a certain speed, the method further comprises the step of releasing the screen to play from the final output position. 5. The method of claim 4, Receiving the broadcast signal and recording in the ring buffer, Receiving a broadcast; Sequentially writing to the ring buffer; Determining whether broadcast data can be stored in the ring buffer; If there is no more space to write in the ring buffer as a result of the determination, Deleting the oldest data; Determining whether a channel change command is input; And deleting all contents of the ring buffer when a channel change command is input as a result of the determination.

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