KR20070013600A - Method for halting digital multimedia broadcasting content reproduction at low battery state and mobile communication terminal therefor - Google Patents

Abstract

A method for halting the regeneration of DMB(Digital Multimedia Broadcasting) contents in a low battery residue state and a mobile terminal using the same are provided to maintain the call function by automatically stopping the DMB contents regeneration function in case that the residue of a battery drops below an appointed level in the middle of regenerating DMB contents. A mobile terminal to implement a method for halting the regeneration of DMB contents in a low battery residue state comprises an input part(214), a microprocessor(206), a battery(216), and a battery residue detection part(218). If the user of the mobile terminal inputs a battery residue level through the input part(214) in order to automatically stop DMB contents regeneration. The microprocessor(206) memorizes the inputted battery residue level. The battery residue detection part(218) checks the remaining amount of the battery(216) and outputs a signal to the microprocessor(206). The microprocessor(206) compares the present residue of the battery(216), detected by the battery residue detection part(218), with the inputted battery residue level. In case that the present residue of the battery(216) is smaller than or equal to the inputted battery residue level, the microprocessor(206) stops regenerating DMB contents.

Description

[Method for Halting Digital Multimedia Broadcasting Content Reproduction at Low Battery State and Mobile Communication Terminal Therefor}

1 is a control circuit diagram of a mobile communication terminal for stopping content playback in a state where a conventional battery residual charge amount is low;

2 is a block diagram of a mobile terminal for stopping DMB content playback in a state in which a battery has a low residual charge amount according to an embodiment of the present invention;

3 is a flowchart illustrating a method of stopping playing DMB content in a state in which a battery has a low residual charge amount according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: battery 110: control unit

120: display unit 130: playback unit

140: playback switch 150: comparator

200: compression / restorer 202: digital signal processor

204: buffer memory 206: microprocessor

208: audio equalizer 210: audio output

212: display unit 214: input unit

216: Battery 218: Battery remaining detector

220: transceiver 222: DMB receiving module

The present invention relates to a method of stopping the playback of DMB content in a state in which the remaining charge of the battery is low, and a mobile communication terminal using the same. More specifically, the method of stopping DMB content playback in a state in which the remaining charge amount of the battery is automatically stopped when the battery charge of the mobile communication terminal falls below a certain level when watching the DMB broadcast in the mobile communication terminal, and the same. It relates to a mobile communication terminal used.

Recently, as the spread of mobile communication terminals has expanded, user needs have also diversified. Therefore, technology development has been carried out to perform various additional service functions such as a short message service in addition to the unique call function of the mobile communication terminal. In addition, as mobile communication terminals become smaller and smaller, various various functions for user convenience are added.

Recently, as the mobile communication service is widely expanded, almost all citizens are provided with at least one mobile communication service. These mobile communication services are being expanded to use wireless internet services and contents for mobile communication terminals following basic voice calls, text and voice message transmissions. Among them, the wireless Internet service can be used by connecting to a server on the Internet to obtain necessary information by using the Internet, as well as by downloading and storing wireless Internet contents such as various images, ringtones, and games wirelessly or executing them in real time. To be able.

Such wireless Internet content has additional services such as Video On Demand (VOD), Music On Demand (MOD), and MP3, and its usage is gradually increasing.

VOD is an abbreviation of video-on-demand service, a new concept video service business that provides video-based services such as movies and news through telephone lines or cables according to the needs of service users. The VOD service digitally compresses a video program and stores it in a video server, and provides a program desired by a subscriber using a high-speed communication network. The user can select, play, control, index search, and query a program.

MOD is an abbreviation for music service on demand and is a service that can listen to the desired music using a mobile communication terminal. MOD uses MP3 music files, the next generation digital music media, for digital audio broadcasting using satellites or sells services through the Internet. Through the MOD service, the opportunity to access MP3 music files can be extended to the mobile terminal users, and the MP3 market can be activated. MOD offers streaming services that provide CD-quality audio at low cost, MP3 download services that provide high-speed download services, online karaoke services, network game services, title-on-demand services, and Internet broadcasts that cannot be implemented using existing networks. By real-time service, you can broadcast breaking news and various overseas sports.

MP3 is an audio and video compression standard of MPEG, which is a music file that can contain stereo-quality music comparable to that of an audio CD. When recording, about 3 to 5 Mbit is enough. Unlike audio CDs, if you make music files with MP3s, you can store more than 130 songs on a single CD or pop song, and the playing time is nearly 10 hours. MP3 is a file ending in 'mp3' and is the product of recognition coding technology considering the limited hearing of human beings. MP3 eliminates frequency ranges that are indistinguishable to humans, so it has the advantage of compressing music 12 to 1 while maintaining CD-quality sound. For example, if one song of a CD is extracted while maintaining the CD quality, the size becomes 50 Mbit, but when compressed and converted to MP3, the size is greatly reduced to 4 to 5 Mbit. Due to the limitations of transmission and storage capacities of today's tracks, video or sound compression is one of the most important technologies in digital signal processing applications. In 1988, ISO, IEC, and MPEG were organized to study the data compressor method as an international standard and released MPEG as an international standard for powerful audio / video coding. So far, MPEG-1 to MPEG 4 have been developed. It is part of the audio portion of MPEG. MPEG consists of several parts such as system, video, and audio. The audio part has three layers hierarchically according to the compression rate (Layer 1, Layer 2, Layer 3), and MP3 refers to the dual layer 3, which has the largest and most complex compression rate. It is a compressor method that uses human hearing characteristics for sound. In general, without data compression, digital audio signals typically use sampling frequencies greater than twice the actual audio bandwidth (e.g. 44.1 kHz on CDs) and 16-bit quantization, in which case stereo music is represented at the CD level. This requires more than 1400 Kbits per second. In other words, if you make a digital file without compressing a song for about 3 minutes, you need about 31.5 Mbits of data. Using MPEG technology, you can compress the amount of data to one-twelfth without compromising sound quality. Of course, even up to 1/96 (the quality of a phone call) can be compressed, depending on the sound quality.

On the other hand, with the development of mobile technology, the demand for using broadcast services including video services and voice services in mobile communication environments has increased so that digital multimedia broadcasting (DMB) is called. Soybeans.

Digital media broadcasting refers to a broadcasting service that digitally modulates various multimedia data such as image data and audio data and provides the same to a fixed terminal or a portable terminal. In other words, it means a service that can provide high-quality, high-definition broadcasting of CD (Compact Disk) or DVD (Digital Versatile Disc) level to a mobile communication terminal such as a mobile phone, a PDA (Personal Digital Assistant) or a vehicle terminal while moving. Unlike analog broadcasting, DMB broadcasting service is combined with mobile communication network and provides two-way service such as remote purchase, telemedicine, and distance education.

DMB broadcasting service is a broadcasting service that provides various multimedia signals such as voice and video to digitally modulated, fixed or portable vehicle receiver. It is called 'TV in hand'. It is based on DAB (Digital Audio Broadcasting), a technology for digital radio, and a multimedia broadcasting concept has been added to it to send additional data such as video, weather, news, and location. It is attracting attention as the next generation broadcast because it can enjoy high quality and high quality broadcasting such as CD and DVD through personal portable terminal or vehicle terminal on the go.

There are two types of DMB: terrestrial DMB and satellite DMB. Terrestrial DMB transmits programs on the ground using frequencies. Use VHF channel 12 which is currently empty and channel 8 which is for military use. Unlike satellite DMB, broadcast signals are transmitted through base stations on the ground. Terrestrial DMB is a method of receiving radio waves shot by broadcasting stations as in normal broadcasting. Because of this, unlike satellite DMB, which can broadcast simultaneously at the same frequency across the country, terrestrial DMB is broadcasted at different frequencies depending on the region. The terrestrial DMB, originally designed to complement American digital TV broadcasts that are not mobile, was developed by applying video technology to digital radio broadcasting (DAB), a European standard. This new approach is eye-catching as it is likely to be adopted as a technical standard in Europe, now home to DAB.

Satellite DMB uses satellites. When a program is transmitted to a satellite by a satellite DMB broadcasting center, the satellite distributes the program to DMB terminals nationwide. Unlike terrestrial DMB, satellite DMB broadcasts using satellites and low-receiving urban areas utilize a kind of repeater called a shaded area repeater. Satellite broadcasting is intended to receive broadcasting directly by the general public. It is a broadcasting method in which signals are transmitted or retransmitted by a space station mounted on a satellite, and a broadcasting satellite has a high output type and a medium output according to whether the receiving side is an individual reception or a joint reception. In the satellite broadcasting of various countries, the former is the mainstream of the individual reception type, but there is also a medium output type communication satellite for the purpose of distribution to the CATV (wired TV) which is the joint reception type. Satellite DMB transmits radio waves directly from satellites, so there is less image quality and images are clear. Since the radio waves are transmitted from the equator to the Korean peninsula, it is possible to broadcast Japanese national broadcasts including Jeju Island and Ulleungdo Island, and to provide clear images using the shaded area repeater in the astigmatism area, and to use the PCM (Pulse Code Modulation) device. Therefore, high quality broadcasting is possible. And because the satellite DMB broadcasts the satellite as a relay medium, it can broadcast all over the country at once in an emergency without suffering from disasters such as nature or war occurring on the earth. Satellite DMB broadcasting digitizes the audio signal. There are two types of transmission modes, A mode and B mode, which are used according to the contents of the broadcasting station. A mode has a sound quality equivalent to that of FM broadcast in a format of 14 bits and a sampling frequency of 32 KHz. In contrast, the B mode realizes a sound quality of about 16 CD and a sampling frequency of 48 KHz.

1 is a control circuit diagram of a mobile communication terminal which automatically stops playing content in a state where a residual charge of a conventional battery is small.

As shown in FIG. 1, a mobile communication terminal which automatically stops content playback in a state where a residual amount of charge of a conventional battery is small is a battery 100, a controller 110, a display 120, a playback 130, and a playback. Switch 140, comparator 150, and the like.

The battery 100 supplies power for driving the mobile communication terminal, and in particular, supplies power for reproducing contents such as VOD, MOD, and MP3. The controller 110 outputs a control signal for controlling the operation of each component of the mobile communication terminal. The display unit 120 displays the short message and the status of the mobile communication terminal so that the user can confirm it. The playback unit 130 includes an audio codec and a video codec to reproduce VOD, MOD, and MP3. The playback switch 140 receives the control signal from the controller 110 and causes the playback unit 130 to play the content. The comparator 150 compares the reference charge amount with the residual charge amount of the battery 100.

The power of the battery 100 driving the regeneration unit 130 is input to one input terminal (+) and the reference charge amount is input to the other input terminal (-), and the magnitudes of the two charges are determined by the comparator 150 to generate a signal. Output The controller 110 receives the output of the comparator 150 to determine whether to allow reproduction and outputs a control signal.

When the remaining charge amount of the battery 100 is greater than the reference charge amount, the control unit 120 sends a control signal for recognizing the user to the display unit 120, and the display unit 120 displays a reproduction message. The controller 110 outputs a control signal to connect the playback switch 140 to the playback unit 130 to play the content.

However, when the remaining charge amount of the battery 100 is less than or equal to the reference charge amount, the control unit 120 sends a control signal for recognizing the user to the display unit 120, and then the display unit 120 displays a reproduction stop message. The controller 110 outputs a control signal to block the play switch 140 so that the play unit 130 stops playing the content.

However, in such a mobile communication terminal, the reference charge amount is fixed at a constant level without considering the call function, and thus, when the user tries to use the call function, there is a problem in that the call function cannot be used because the remaining charge amount of the battery is insufficient.

In order to solve the above problems, the present invention provides a DMB content in a state in which the remaining charge amount of the battery which automatically stops playing the DMB content when the battery charge amount of the mobile communication terminal falls below a certain level when watching the DMB broadcast in the mobile communication terminal An object of the present invention is to provide a method for stopping playback and a mobile communication terminal using the same.

According to a first object of the present invention, the mobile communication terminal stops playing DMB (Digital Multimedia Broadcasting) content when the residual charge amount of the mobile communication terminal power is less than or equal to a preset residual charge amount. A battery for supplying power for supplying power for supplying power for playing the DMB content; A battery remaining amount detection unit which checks the remaining amount of charge of the battery and outputs information on the identified amount of remaining charge; An input unit for inputting a text or instructing an operation and selecting a function to stop playing DMB content from a menu of the mobile communication terminal; A display unit configured to display an input item through the input unit, status information of the mobile communication terminal, a received short message, and information on playing and stopping the DMB content; An audio output unit for amplifying an audio signal obtained by playing the DMB content and outputting the amplified audio signal; Transmitting and receiving unit for transmitting and receiving data to and from the server connectable to the mobile communication terminal through a mobile communication network; A DMB receiving module for receiving the DMB content from a satellite DMB broadcasting center via a satellite; And comparing the remaining charge amount of the battery determined by the battery remaining amount detection unit with a residual charge amount set by the user, and reproducing the DMB content when the residual charge amount of the power source of the mobile communication terminal is less than or equal to the preset residual charge amount. It is an object of the present invention to provide a mobile communication terminal which stops playing DMB content in a state in which a residual charge amount of a battery is small, characterized by including a microprocessor for controlling the stopping operation.

According to a second object of the present invention, a method of detecting a residual charge of a mobile communication terminal battery and stopping playback of DMB (Digital Multimedia Broadcasting) content when it is less than or equal to a preset residual charge, includes: (a) the battery Inputting a selection of a function mode to stop playback of the DMB content when the residual charge amount of is less than or equal to a preset residual charge amount; (b) playing the DMB content stored in the mobile communication terminal or received from the outside; (c) receiving a selection of a function of stopping playback of the DMB content when the remaining charge amount of the battery is less than or equal to the preset remaining charge amount; (d) setting a residual charge amount of the battery set in advance; (e) comparing the residual charge amount of the battery of the mobile communication terminal with the preset residual charge amount; And (f) stopping playback of the DMB content when the remaining charge amount of the battery is less than or equal to the preset remaining charge amount and switching the mobile communication terminal to a call standby mode. It is an object of the present invention to provide a method of stopping the playback of DMB content in a state of low residual charge.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a block diagram of a mobile communication terminal that automatically stops playing content in a state in which a battery has a low residual charge amount according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the mobile communication terminal which stops playing DMB content in a state in which the battery has a low residual charge amount includes a compression / restorer 200, a digital signal processor 202, a buffer memory 204, and a microprocessor. 206, the audio equalizer 208, the audio output unit 210, the display unit 212, the input unit 214, the battery 216, the battery level detector 218, the transceiver 220, and the DMB receiving module 222. It is configured to include).

In the present invention, the compression / restorer 200 compresses the sampled audio and video signals according to a predetermined protocol and converts them into MP3 and video files or restores them by reading and decompressing MP3 and video files stored in the memory. The digital signal processor 202 is a digital signal processing processor that codes or decodes voice packets and data packets, functions as an equalizer for the removal of multipath noise, processes acoustic data, and the like. The buffer memory 204 is a memory for temporarily storing a file when a delay occurs when converting audio and video signals into MP3 and video file types. The microprocessor 206 outputs a control signal for controlling the operation of each component of the mobile communication terminal.

In the present invention, the audio equalizer 208 performs processing for outputting higher quality audio to the user. The audio output unit 210 amplifies an audio signal obtained by playing an MP3 and a video file under the control of the microprocessor 206 and outputs the audible sound for the user to hear. The display unit 212 displays a short message and a state of the mobile communication terminal. The input unit 214 inputs a command for the user to input text or to direct the operation of the mobile communication terminal.

In the present invention, the battery 216 supplies the power for driving the mobile communication terminal, and in particular, the operating power required to play the DMB content. The battery remaining amount detector 218 checks the remaining charge remaining in the battery 216. The transceiver 220 is controlled by the microprocessor 206 to wirelessly transmit and receive MP3 and video files as well as a call function.

The DMB receiving module 222 includes a DMB antenna for receiving a DMB signal from a satellite and a DMB tuner for selecting a signal of a desired channel from among the DMB signals.

Referring to a mobile communication terminal according to a preferred embodiment of the present invention, the DMB receiving module 222 receives audio and video signals of DMB content. The digital signal processor 202 converts the audio and video signals of the DMB content to the bit rate to be compressed and codes them by mathematical operations. The coded audio and video signals are compressed according to a protocol determined by the compression / restorer 200 and separated into A / V (Audio / Video) signals capable of outputting video and audio. The audio equalizer 208 receiving the control signal of the microprocessor 206 divides the audio signal of the DMB content by frequency and adjusts the sound range to change the timbre. The audio output unit 210 outputs a voice signal of the DMB content so that a user can hear it. The display unit 212 displays a video signal of the DMB content.

In the present invention, the user inputs the remaining charge level of the battery through the input unit 214 to automatically stop playing the DMB content. The charge level of the battery input by the user is stored by the microprocessor 206. The battery remaining amount detector 218 checks the remaining charge of the battery 216 and outputs a signal to the microprocessor 206. The microprocessor 206 compares the user-specified charge amount of the battery with the remaining charge amount of the battery 216. If the remaining charge amount of the battery 216 is less than or equal to the remaining charge amount of the user specified battery, the microprocessor 206 stops playing the DMB content.

3 is a flowchart illustrating a method of automatically stopping DMB content playback in a state in which a battery has a low residual charge amount according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the user selects whether or not to use a menu of a function to stop playing DMB content (S300). The user does not normally have to select the DMB content playback stop function menu to play the DMB content. Only when checking or changing the DMB content reproduction stop function, the menu of the DMB content reproduction stop function, which is one of the basic menus of the mobile communication terminal, is selected through the operation of the input unit 214.

If the menu of the DMB content playback stop function is selected, it is possible to determine whether to select the DMB content playback stop function (S350). If the DMB content playback stop function is not selected, while the DMB content is repeatedly played, the playback of the DMB content is stopped when the battery 216 is about to be discharged (S370). However, if the DMB content playback stop function is selected, the user sets a desired remaining charge amount (S360). The remaining charge is divided into several stages, and the user selects an appropriate remaining charge in consideration of the time to talk after playing the DMB content.

When the mobile terminal releases, the function to stop playing DMB content is automatically set. Once the DMB content stop function is set, the function is maintained until the user changes it again.

The user plays the DMB content through the input unit 214 of the mobile communication terminal (S310). The user selects, downloads and plays DMB contents from the satellite through the DMB receiving module. Then, select whether to play the DMB content to be played once or repeatedly.

The microprocessor 206 of the mobile communication terminal compares the remaining charge amount of the battery 200 confirmed by the battery remaining amount detector 218 with a preset remaining charge amount (S320). If the remaining charge of the battery 216 is large, the DMB content continues to be played.

However, when the residual charge amount of the battery 216 is less than or equal to the preset residual charge amount, the microprocessor 206 automatically stops the reproduction (S330). The microprocessor 206 outputs a control signal to the display unit 212 to display the DMB content reproduction automatic stop message.

If playback of the DMB content is stopped, the mobile communication terminal is switched to the standby mode (S340).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, even when the user does not pay attention to the playback of the DMB content, the playback function is automatically stopped below the remaining charge amount specified by the user, thereby increasing the battery usage and maintaining the call function, which is the main function of the mobile communication terminal. It has the effect of making it work.

Claims (9)

A mobile communication terminal which stops playing DMB (Digital Multimedia Broadcasting) content when the remaining charge amount of the mobile communication terminal power is less than or equal to a preset remaining charge amount, A battery for supplying power for operating the mobile communication terminal and for supplying power for playing the DMB content; A battery remaining amount detection unit which checks the remaining amount of charge of the battery and outputs information on the identified amount of remaining charge; An input unit for inputting a text or instructing an operation and selecting a function to stop playing DMB content from a menu of the mobile communication terminal; A display unit configured to display an input item through the input unit, status information of the mobile communication terminal, a received short message, and information on playing and stopping the DMB content; An audio output unit for amplifying an audio signal obtained by playing the DMB content and outputting the amplified audio signal; Transmitting and receiving unit for transmitting and receiving data with the server connectable to the mobile communication terminal through a communication network; A DMB receiving module for receiving the DMB content from a satellite DMB broadcasting center via a satellite; And Compare the remaining charge amount of the battery determined by the battery remaining amount detection unit with the remaining charge amount set by the user, and stop playing the DMB content when the remaining charge amount of the power source of the mobile communication terminal is less than or equal to the preset remaining charge amount. Microprocessor for controlling the A mobile communication terminal for stopping the playback of the DMB content in a state where the remaining charge amount of the battery, characterized in that it comprises a. The method of claim 1, The mobile communication terminal further includes an audio equalizer for dividing the audio signal of the DMB content by frequency and adjusting a sound range to change a tone, thereby stopping playback of the DMB content in a state in which the remaining charge amount of the battery is low. Communication terminal. The method of claim 1, wherein the display unit, And displaying the video signal of the DMB content, and stopping playback of the DMB content in a state where the remaining charge amount of the battery is low. The method of claim 1, wherein the DMB receiving module, And a DMB tuner for receiving a DMB signal from the satellite and a DMB tuner for selecting a signal of a desired channel among the DMB signals. In the method of detecting the remaining charge of the mobile terminal battery to stop the playback of DMB (Digital Multimedia Broadcasting) content when less than or equal to the preset residual charge, (a) inputting a selection of a function mode to stop playback of the DMB content when the residual charge amount of the battery is less than or equal to a preset residual charge amount; (b) playing the DMB content stored in the mobile communication terminal or received from the outside; (c) receiving a selection of a function of stopping playback of the DMB content when the remaining charge amount of the battery is less than or equal to the preset remaining charge amount; (d) setting a residual charge amount of the battery set in advance; (e) comparing the residual charge amount of the battery of the mobile communication terminal with the preset residual charge amount; And (f) stopping playback of the DMB content when the remaining charge amount of the battery is less than or equal to the preset remaining charge amount and switching the mobile communication terminal to a call standby mode; How to stop playing the DMB content in a state that the remaining charge amount of the battery, characterized in that it comprises a. The method of claim 5, wherein in step (c), The DMB content reproduction stop function is automatically set when the mobile communication terminal is released, and once set, the method maintains the setting until the change. The method of claim 5, wherein in step (c), If the DMB content playback stop function is not selected, the mobile communication terminal repeatedly plays the DMB content and stops playing the DMB content when the battery is about to be discharged. How to stop playing content. The method of claim 5, wherein in step (d), The predetermined amount of remaining charge of the battery is selected by being divided into a plurality of steps as the amount of charge of the battery of the mobile communication terminal remaining after playing the DMB content. . The method of claim 5, wherein step (e) When the remaining charge amount of the battery is less than or equal to the preset remaining charge amount, the display unit of the mobile communication terminal displays a message indicating that the DMB content stops playing. How to stop.

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