KR20080058992A - Apparatus and method for managing of history information in a portable terminal - Google Patents

Abstract

An apparatus and a method for managing history information in a mobile terminal are provided to enhance the efficiency of using a memory by effectively managing history information of display data displayed on the mobile phone. A mobile terminal is in an idle mode(S201). When a particular event occurs(S203), screen data of the event is outputted and the mobile terminal checks whether there is previous history information about the screen data outputted for the event(S205). If there is history information about the screen data of the event, the mobile terminal deletes the previous history information of the screen data from a memory unit(S207) and stores history information of the screen data together with an identifier of the screen data in the memory unit(S209).

Description

APPARATUS AND METHOD FOR MANAGING OF HISTORY INFORMATION IN A PORTABLE TERMINAL}

1 is a view schematically showing the configuration of a mobile terminal according to an embodiment of the present invention;

2 is a view showing a history information management method in a mobile terminal according to an embodiment of the present invention;

3 is a diagram illustrating a screen data management method according to a back request in a portable terminal according to an embodiment of the present invention;

4 is a diagram illustrating an example of a history information management method in a mobile terminal according to an embodiment of the present invention;

5 is a diagram illustrating a screen data management method according to a back request in a portable terminal according to an embodiment of the present invention;

6 is a view for convenience of operation description according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and more particularly, to efficiently manage a history of screen data displayed on a mobile terminal, and to prevent the infinite loop error caused by the back function, so that the memory can be efficiently managed. The control method is related.

In general, with the development of wireless communication technology, the spread of portable terminals is increasing exponentially, and as the spread of portable terminals is generalized, communication providers provide various services to satisfy various needs of subscribers. Currently, mobile service providers are not limited to space and time-related calls, as well as wireless Internet service, short message service (SMS), multimedia messaging service (MMS), images and video. And various services such as multimedia services such as digital broadcasting are provided through a mobile terminal.

The mobile terminal, in addition to the basic function of making a call with a general subscriber or another mobile subscriber through a base station (BS) while arbitrarily moving in a mobile communication service area, manages personal information, exchanges information with a computer, and the Internet. It has additional functions such as performing the same data connection. In recent years, the portable terminal has been developed as a complex information device having various additional functions such as transmission and reception of images and videos, an MP3 player function, a camera function capable of taking a picture, and a digital broadcast reproduction function.

In particular, the mobile terminal performs a function of receiving and displaying various digital broadcast signals through the digital broadcast receiving module. Here, the digital broadcast signal is a digitally encoded and modulated signal, and the digital broadcast receiving module demodulates and decodes it in reverse. Currently, the digital broadcasting method can be roughly divided into DMB (Digital Multimedia Broadcasting) and DVB (Digital Video Broadcasting).

As described above, the mobile terminal executes various functions. Accordingly, the number of applications for executing functions and menu screens corresponding to the functions of the mobile terminal is increasing exponentially. For example, as described above, as the digital broadcast service is provided through the digital broadcast reception module, the number of service channel data and menu screens corresponding thereto varies.

Accordingly, the portable terminal stores history information corresponding to the user whenever the user executes a specific application or menu. In this case, in the general mobile terminal, the history information about the screen data corresponding to the execution of a specific application is stored in the arrangement method in storing the history information. That is, information about all the history of screen data executed every time is stored. Therefore, a lot of duplicate history information may occur.

For example, several or more history information of the first screen data may be stored, and the history of each screen data may also overlap. Therefore, this history management method becomes very inefficient for memory management. In addition, there is a problem that, due to the overlapping history information as described above, even when the user inputs a cancel key when executing a particular menu, the user falls into an infinite loop. That is, an infinite loop error that continuously outputs only one or two identical screen data may occur.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an apparatus and method for more efficiently managing history information in a mobile terminal.

Another object of the present invention is to provide an apparatus and method for managing history information in a mobile terminal capable of efficiently managing history information of screen data displayed on the mobile terminal and preventing an infinite loop error caused by a back function. .

It is still another object of the present invention to provide an apparatus and method for managing history information in a mobile terminal which can increase memory efficiency through efficient history information management in a mobile terminal.

The method according to an embodiment of the present invention for achieving the above object, in the history information management method in a mobile terminal, the process of extracting the previous history information of the event in response to the execution of any event, and the extraction Deleting the previous history information, and storing history information of the executed event as an upper index.

Method according to an embodiment of the present invention for achieving the above object, in the history information management method in the mobile terminal, determining whether the previous history information for the screen data when the screen data output according to the execution of any event Storing the history information of the screen data together with an identifier of the screen data if the previous history information does not exist, and deleting the previous history information of the screen data if the previous history information exists. Include.

The method according to an embodiment of the present invention for achieving the above object, in the history information management method in a mobile terminal, the process of outputting the screen data according to the execution of any event, and the back function during the output of the screen data Determining whether a selection is made; if the back is selected, determining a current TOP INDEX; if the TOP INDEX is 0; terminating the executed event; and if the TOP INDEX is 0 Or deleting history information of the screen data.

An apparatus according to an embodiment of the present invention for achieving the above object, in the mobile terminal, receives a number / character information, and receives a key signal input in connection with the setting of various functions and the function control of the mobile terminal And an input unit, a memory unit for storing history information on the screen data, a display unit for outputting the screen data, and a controller for controlling management and operation of the history information on the screen data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, only the parts necessary for understanding the operation according to the embodiment of the present invention will be described, it should be noted that the description of other parts will be omitted so as not to distract from the gist of the present invention.

The terms or words used in the specification and claims described below should not be construed as being limited to ordinary or dictionary meanings, and the inventors are appropriate as concepts of terms for explaining their own invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

DETAILED DESCRIPTION Hereinafter, detailed descriptions of preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that the same components in the figures represent the same numerals wherever possible.

An embodiment of the present invention is to efficiently manage the history information of the screen data generated based on the execution of the application provided by the mobile terminal and the execution of the menu corresponding to the mobile terminal and the control of the portable terminal to efficiently use the memory It is about a method.

In the following description, specific details such as embodiments of digital broadcasting are shown to provide a more general understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be readily practiced without these specific details and by modifications thereof.

Therefore, in an embodiment of the present invention, the portable terminal may be a digital broadcast receiver for receiving and providing service channel data selected by a user or a portable terminal including such a digital broadcast receiving module.

In this case, the digital broadcasting may be classified into a digital multimedia broadcasting (DMB) method, a digital video broadcasting (DVB) method, a media flow (forward link only), or the like. The DMB, DVB, and media flow methods all use digital broadcasting. In addition, the DVB scheme includes a DVB-T scheme and a DVB-H scheme. The DVB-H scheme uses time slicing and IP (Internet Protocol) based broadcast signals. A portable terminal according to an embodiment of the present invention will be described with an example of receiving and processing the broadcast signal of the DVB-H. However, the portable terminal according to the embodiment of the present invention can be applied to all of the DVB method, the DMB method, and the media flow method.

Hereinafter, terms used in the embodiments of the present invention may be defined as follows.

First, the screen data is used to mean an execution screen and a menu screen displayed on the screen according to the execution of the application provided by the mobile terminal.

The history generally refers to data that records changes in data or files in a database or file system. In the exemplary embodiment of the present invention, the history is used to include history information in screen data corresponding to application execution. In addition, the history information includes an identifier (eg, a menu identifier (ID)) assigned to the screen data.

In the embodiment of the present invention, the mobile terminal is described using a mobile communication terminal as an example, but the present invention is not limited thereto.

Accordingly, the portable terminal according to an embodiment of the present invention is a mobile communication terminal, a digital broadcast receiver, a personal digital assistant (PDA), a smart phone, an IMT-2000 (International Mobile Telecommunication 2000) terminal, and a WCDMA. All information and communication devices such as wideband code division multiple access (UM) terminals, universal mobile telecommunication service (UMTS) terminals, mobile phones, portable multimedia players (PMPs), MP3 players, and note-book computers; It will be apparent that the present invention may be applied to multimedia devices and applications thereof.

1 is a view schematically showing the configuration of a mobile terminal according to an embodiment of the present invention.

1, the mobile terminal 100 according to an embodiment of the present invention is a radio frequency (hereinafter referred to as "RF") communication unit 110, data processing unit 120, audio processing unit ( 130, an input unit 140, a memory unit 150, a display unit 160, a digital broadcast receiving module 170, a controller 180, and the like. The memory unit 150 may further include a screen data storage unit 151. The controller 180 may further include a history information manager 181 and an event detector 183.

Referring to FIG. 1, the RF communication unit 110 performs communication of the mobile terminal 100. For example, the RF communication unit 110 forms a communication channel with a mobile communication system to perform data communication such as text communication and voice communication. The RF communication unit 110 may include an RF transmitter for upconverting and amplifying a frequency of a transmitted signal, and an RF receiver for low noise amplifying and downconverting a received signal.

The data processor 120 is responsible for processing voice data transmitted from the audio processor 130, numeric / text data input through the input unit 140, and data transmitted / received from the RF communication unit 110. . The data processor 120 may include a transmitter for encoding and modulating a signal transmitted through the RF communication unit 110, and a receiver for demodulating and decoding a signal received through the RF communication unit 110. The data processor 120 may include a modem and a codec. The codec includes a data codec for processing packet data and an audio codec for processing an audio signal such as voice.

The audio processor 130 plays a function of reproducing an audio signal output from the data processor 120 or transmitting an audio signal generated from a microphone (MIC) to the data processor 120. The audio processor 130 converts audio / sound data into an audible sound through a speaker SPK, and outputs an audio signal such as a voice received from the microphone MIC.

The input unit 140 receives numeric and / or character information, and transmits a key signal input in connection with setting various functions and controlling a function of the portable terminal, to the controller 180. The input unit 140 may be formed as a touch pad or a keypad of a general key arrangement according to the form of the portable terminal. The input unit 140 further includes function keys such as a direction key, a volume key, and a hot key set to perform a specific function. The input unit 140 receives a selection signal (eg, a request for executing a digital broadcast application, a request for returning to a previous screen, etc.) received from a user and transmits the selected signal to the controller 180.

The memory unit 150 stores data generated by a user or received from the outside, including application programs necessary for operating a function according to an embodiment of the present invention. The memory unit 150 stores setting information related to the function. In addition, the memory unit 150 stores history information on screen data executed according to a user request. For example, in response to a user's specific menu request, history information about menu screens displayed through the display unit 160 is stored together with identifier information assigned to each menu. That is, the screen data each include an identifier ID. To this end, the memory unit 150 further includes a history storage unit 151. Since the screen data or history information will be described with reference to FIG. 6 to be described later, a detailed description thereof will be omitted.

The display unit 160 displays a screen (eg, a communication screen, a digital broadcast screen, a menu screen, etc.) generated during program execution under the control of the controller 180, and displays a user's key operation status and function setting information. do. The display unit 160 may be formed of a liquid crystal display (hereinafter, referred to as an LCD). When the LCD is formed in the form of a touch screen, the display unit 160 may be input. It can be included in the means.

The digital broadcast receiving module 170 performs a function of receiving and displaying various digital broadcast signals. Here, the digital broadcast signal is a digitally encoded and modulated signal, and the digital broadcast reception module 170 needs to demodulate and decode the data in reverse. Accordingly, the digital broadcast receiving module 170 may further include a tuner, a broadcast data demodulator, and a broadcast data decoder. Currently, the digital broadcasting scheme can be broadly classified into a digital multimedia broadcasting (DMB) scheme, a digital video broadcasting (DVB) scheme, a media flow only (Media FLO). The digital broadcasting uses a method of serving a plurality of service channels in one frequency channel, and the service channels are channels for transmitting program information and / or broadcast information of channels for transmitting digital broadcast signals broadcast from broadcasting stations. It may consist of. The DMB, DVB, and media flow methods all use digital broadcasting. In addition, the DVB scheme includes a DVB-T scheme and a DVB-H scheme. The DVB-H scheme uses time slicing and IP (Internet Protocol) based broadcast signals. The portable terminal according to an embodiment of the present invention can be applied to both the DVB method, the DMB method, and the media flow method.

The controller 180 controls the overall operation of the mobile terminal 100 and the signal flow between the internal blocks of the mobile terminal 100. The controller 180 is a signal flow between the components of the data processor 120, the audio processor 130, the input unit 140, the memory unit 150, the display unit 160 and the digital broadcast receiving module 170, etc. To control. The controller 180 may include the data processor 120.

In particular, the controller 180 controls the management and operation of the history information on the screen data according to the execution of the application in the mobile terminal 100 according to an embodiment of the present invention. Specifically, the controller 180 controls to display the screen data for the event through the display unit 160 when an event such as a menu request for digital broadcasting execution or a specific function execution occurs.

The controller 180 controls history information management so that the history information corresponding to the screen data is compared with the previous history information, and when the previous history information exists, the previous history information is deleted and only the new history information is stored.

When the controller 180 detects a back function request from the screen data being displayed through the display unit 160, the controller 180 manages history information of the screen data stored in the memory unit 150 in response thereto. The back function refers to a function of tracking and moving previously activated history information when a user requests an event such as canceling an application currently running, proceeding to a previous menu, and switching a screen. Typically, the user can do this through a keystroke mapped to the 'cancel' function. Therefore, in the embodiment of the present invention, the controller 180 detects the event detection through a cancel input.

For the control of the present invention, the controller 180 further includes a history information manager 181 and an event detector 183.

The history information manager 181 manages history information of screen data stored in the memory unit 150 (particularly, the history storage unit 151) according to a user event. The history information management unit 181 checks the identifier (ID) of the screen data when storing the history information of the screen data according to the occurrence of the event, whether the previous history information of the screen data is stored in the memory unit 150. Determine.

The history information manager 181 deletes the previous history information when the previous history information about the screen data exists, and maps and stores the new history information to the top index TOP INDEX. In addition, the history information management unit 181 moves the position of the history information with respect to the other screen data previously accumulated to the empty space generated by deleting the previous history information by one space. At this time, the history information manager 181 moves the position of other history information having an index higher than the index mapped to the deleted previous history information. Specific embodiments thereof will be described later.

The history information manager 181 manages an index for each history information that is changed as the history information is deleted, added, or moved as described above. In particular, the history information management unit 181 manages the top index (TOP INDEX). For example, when deleting a previous history index, the value of the top index (TOP INDEX) is decreased by one. Also, when adding new history information, the value of TOP INDEX is increased by 1.

The event detecting unit 183 determines whether a request for a back function from the user is requested for an event such as an application currently running in the mobile terminal 100, a menu movement or a screen change being displayed. For example, the event detecting unit 183 detects whether a cancel key is input from a user during the execution of any event. Afterwards, when the event detector 183 detects the input of the cancel key, the event detector 183 transfers it to the history information manager 181.

Then, the history information manager 181 performs an event such as an application currently running, a menu moving or a screen change, based on the cancel signal transmitted from the event detector 183. At this time, the history information management unit 181 deletes the history information on the screen data currently executed in the mobile terminal 100 from the memory unit 150 when the event is performed. In addition, the history information manager 181 decreases the value of the top index TOP INDEX by 1 when the history information is deleted as described above.

Meanwhile, FIG. 1 illustrates a schematic configuration example of a mobile terminal required for describing an operation according to an exemplary embodiment of the present invention for convenience of description, but the present invention is not limited to this configuration. Accordingly, the portable terminal of the present invention may further include a camera module, a Bluetooth module, or the like, or may omit the digital broadcast receiving module 170 according to the provision form thereof.

In the above, the schematic configuration and the operation thereof of the portable terminal according to the embodiment of the present invention have been described. Next, the operation method for efficient screen data management in the mobile terminal will be described. However, the present invention is not limited to the contents described below, it should be noted that it can be applied to various embodiments based on the following embodiments.

2 is a diagram illustrating a history information management method in a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 2, it is assumed that the portable terminal is in an idle mode as in step S201. Next, when the mobile terminal detects occurrence of any event in step I203, the mobile terminal proceeds to step S205. For example, when the user requests the digital broadcast execution in the idle mode, the portable terminal executes an application execution or an event according to the request and outputs screen data (eg, a broadcast screen, a menu screen, etc.) according to the request. Then proceed to step S205. Hereinafter, for convenience of description, a case where the event is a menu execution will be described as an example. Therefore, in the following description, the mobile terminal stores history information on screen data according to the menu execution and its identifier.

In step S205, when the mobile terminal outputs screen data on the event (for example, a menu), it determines whether there is previous history information on the screen data. That is, it is determined whether or not the event (eg, a menu) has been previously activated and history information of screen data corresponding thereto is stored. In this case, the determination may be performed by dividing an identifier of the screen data from the history information.

If there is no history information on the screen data of the event (for example, a menu) in step S205, the mobile terminal proceeds to step S209 to store the history information of the screen data together with the identifier of the screen data. Add to store At this time, in response to the addition of the new history information, the value of the top index TOP INDEX is increased by 1, and the top index and the new history information are preferably matched.

If there is history information on the screen data of the event (for example, a menu), the portable terminal proceeds to step S207 to delete the previous history information of the screen data from the memory unit. Proceed to step S209 to perform the above procedure. At this time, in step S207, corresponding to the deletion of the previous history information, the positions of other historical information accumulated previously are moved one space to the empty space from which the history information is deleted. Accordingly, it is preferable to change and manage the indexes of the previously accumulated other history information, respectively. In addition, the mobile terminal decreases the value of the top index TOP INDEX by 1 in response to the deletion of the previous history information.

3 is a diagram illustrating a screen data management method according to a back request in a portable terminal according to an exemplary embodiment of the present invention. In particular, in FIG. 3, the back request is described as an example in which the user inputs a cancel key.

Referring to FIG. 3, when an arbitrary event is requested from a user in step S301, the mobile terminal proceeds to step S303 and outputs screen data corresponding to the request event. In this case, when outputting the screen data, the portable terminal may perform a procedure for managing history information on the screen data as described in the description of FIG. 2. Based on the above procedure, new history information about the output screen data may be additionally stored in the memory unit.

Next, the mobile terminal checks whether the back is selected in step S305 during the screen data output. For example, when the portable terminal inputs a cancel key for moving to a previous menu while outputting the screen data (for example, an arbitrary menu screen) in step S305, the portable terminal detects this.

If back check is not selected by the user as a result of the check in step S305, the mobile terminal proceeds to step S307 to perform the request / corresponding operation. For example, the screen data of step S303 may be continuously output, or any event requested by the user may be performed based on the screen data. Alternatively, other screen data may be output from the screen data according to the execution of another function, and at this time, the history management operation of the present invention as shown in FIG. 2 may be performed.

If the user selects to go back in step S305, the mobile terminal proceeds to step S309 to step S311 to check the memory unit to determine the current TOP INDEX. That is, the TOP INDEX value of the position where the new history information about the screen data output in step S303 is added is determined. That is, it is determined whether the TOP INDEX value is 0 or not.

If the top index value is 0, the mobile terminal proceeds to step S313 to end the event executed in step S303 and ends the output screen data in response thereto. Here, when the TOP INDEX value is 0, it may indicate that there is no output for other events and screen data in addition to the event and screen data output performed in step S303 in the mobile terminal. Therefore, it is preferable to display the standby screen set in the portable terminal according to the end of the event and screen data in step S313.

If the top index value is not 0, the mobile terminal proceeds to step S315 to delete history information of the screen data from the memory unit, and then proceeds to step S305 or the user. The request operation can be performed. At this time, it is preferable to decrease the TOP INDEX value by 1 as the history information on the screen data being executed is deleted. In this case, other historical information accumulated previously may be matched to the TOP INDEX.

4 is a diagram illustrating an example of a history information management method in a mobile terminal according to an embodiment of the present invention. In particular, FIG. 4 illustrates an example of a history information management method when the event of FIG. 2 is a digital broadcast execution event.

Referring to FIG. 4, it is assumed first that the mobile terminal is in an idle mode as in step S401. Next, when the mobile terminal detects a digital broadcast execution request signal from the outside in the idle mode as in step S403, the mobile terminal proceeds to step S405 to execute the digital broadcast and displays screen data (eg, a menu screen, a broadcast screen, etc.) accordingly. Output

In this case, when outputting the screen data, the portable terminal checks whether there is a previous history information for the screen data in step S407. That is, in step S407, the portable terminal checks whether the screen data of steps S403 to S405 have been previously activated.

If there is the history information for the screen data as a result of the determination in step S407, the portable terminal proceeds to step S409 to delete the previous history information. In addition, the portable terminal moves a position of other accumulated history information to an empty space in which the history information is deleted in response to the deletion of the previous history information. In this case, the portable terminal decreases the value of the top index TOP INDEX by 1 in response to the deletion of the previous history information in step S409. Here, the moving other history information is history information having an index value higher than the deleted previous history information.

Next, if the previous history information is deleted in step S409, the mobile terminal proceeds to step S411 and additionally stores new history information of screen data according to steps S403 to S405. In this case, the portable terminal increases the value of the top index TOP INDEX by 1 in response to the addition of the new history information in step S411.

If there is no history information for the screen data as a result of the determination in step S407, the portable terminal proceeds directly to step S411 and performs the operation of step S411.

5 is a diagram illustrating a screen data management method according to a back request in a mobile terminal according to an exemplary embodiment of the present invention. In particular, in FIG. 5, the back request is described as an example in which the user inputs a cancel key. 5 illustrates an example of a history information management method when the event of FIG. 3 is a digital broadcast execution event.

Referring to FIG. 5, in step S501, the portable terminal executes digital broadcasting in response to a digital broadcasting execution request signal from a user. Thereafter, the mobile terminal proceeds to step S303 and outputs screen data (eg, a menu screen, a broadcast screen, etc.) according to the digital broadcast execution. At this time, when outputting the screen data, the portable terminal may perform a procedure for managing history information on the screen data as described in the description with reference to FIGS. 2 and 4. Based on the above procedure, new history information about the output screen data may be additionally stored in the memory unit.

Next, the mobile terminal checks whether the back is selected in step S505 during the screen data output. For example, when a cancel key for moving to a previous menu is input while outputting the screen data (eg, an arbitrary menu screen) in step S505, the portable terminal detects this.

If back check is not selected by the user as a result of the check in step S505, the portable terminal proceeds to step S507 to perform the request / corresponding operation. For example, the screen data of the step S503 (for example, any broadcast screen) can be continuously output, or any event (eg, volume control, etc.) requested from the user can be performed in the output screen data. . Alternatively, other screen data may be output from the screen data according to the execution of another function, and at this time, the history management operation of the present invention may be performed as described with reference to FIGS. 2 and 4.

If the user selects to go back in step S505, the mobile terminal checks the memory unit in steps S509 to S511 to determine a current TOP INDEX. That is, the TOP INDEX value of the position where the new history information about the screen data output in step S503 is added is determined. That is, it is determined whether the TOP INDEX value is 0 or not.

When the top index value is 0, the mobile terminal proceeds to step S513 to terminate the application for executing the digital broadcast executed in step S503 and correspondingly outputs the screen data. To exit. In this case, when the TOP INDEX value is 0, it may indicate that there is no output for other events and screen data in addition to the event and screen data output performed in step S503 of the portable terminal. Therefore, it is preferable to display the standby screen set in the portable terminal according to the termination of the application and screen data in step S513.

If the top index value is not 0, the mobile terminal proceeds to step S515 to delete history information of the screen data from the memory unit and accordingly the top index (TOP INDEX). ) Decreases the value by 1. In this case, other historical information accumulated previously may be matched to the TOP INDEX. Thereafter, the mobile terminal can proceed to step S305 or perform a user request operation.

6 is a diagram for convenience of explanation of an operation according to an exemplary embodiment of the present invention. In particular, FIG. 6 illustrates an example of a method of managing history information stored in a memory unit according to an exemplary embodiment of the present invention.

Before describing FIG. 6, the memory unit of the present invention may have a stack structure as shown in FIG. 6. However, the memory unit of the present invention is not limited to this form, but may be a structure capable of adding / deleting history information. The "stack" in the present invention is one of the data structures, and includes a structure in which addition and deletion of history information is possible at any position.

Referring to FIG. 6, as shown by reference numerals 610 to 735, in the present invention, there are 15 screen data displayed by the mobile terminal, and correspondingly, 15 identifiers for distinguishing each of the 15 screen data ( Assume a case in which IDs (eg, # 1 to # 15) match. In addition, a case in which the stack of the memory unit is configured to have 16 indexes corresponding to the screen data will be described as an example. That is, in the present invention, the index is equal to +1 of the number of screen data. This may include a function for temporarily storing history information about newly generated screen data when history information about 15 screen data is additionally accumulated in the memory unit.

First, reference numeral 610 denotes a case in which history information about four screen data in which screen data identifiers # 1 to # 4 are allocated to the current memory unit is stored. In this case, reference numeral 610 illustrates a case in which the history information is arranged in the order of the identifiers, but this is shown for convenience of description and the order may be randomly performed according to the output of the screen data. In reference numeral 610, the top index is 3, and the top index is mapped to history information of screen data having an identifier of # 4.

Next, reference numerals 621 and 631 show examples of a history information management method corresponding to when the mobile terminal outputs the screen data # 2 and the screen data # 9 based on a user request, respectively. will be. As shown in this, when outputting the screen data (# 2 or # 9), the mobile terminal checks whether there is a previous history information for the screen data (# 2 or # 9), deletes the previous history information, if present, Add new history information as the top index. In this case, referring to the reference numeral 621 as an example, the top index is 3, and it can be seen that history information mapped to the top index is changed to history information of screen data having an identifier of # 2.

Next, the reference numeral 623 is an example of the history information management method corresponding to the output of the new screen data (# 7) of the mobile terminal in the state of the reference numeral 621, as described above.

Next, reference numerals 725, 733, and 735 show examples of a history information management method corresponding to a user requesting to go back while outputting screen data. As shown in the figure, it can be seen that the mobile terminal deletes the history information of the screen data terminated by the back when executing the back function.

As described above, according to the exemplary embodiment of the present invention, the efficiency of memory management can be improved by deleting and managing duplicate history information. In addition, as described above, by deleting the duplicate history information and assigning a top index to the new history information, it is possible to prevent the infinite loop error that occurs during the back.

Meanwhile, in the above-described embodiments of the present invention, an example of an apparatus and method for managing history information of screen data of a mobile terminal has been described, but the present invention is not limited thereto. For example, the history information management apparatus and method of the present invention can be applied to all information communication devices and multimedia devices and applications thereof, such as history information management for MP3 files played back in an MP3 player.

As described above, in the detailed description of the present invention has been described with respect to specific embodiments, various modifications are possible without departing from the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

As described above, according to the apparatus and method for managing history information in the mobile terminal proposed by the present invention, there is an advantage that the mobile terminal can manage the history information more efficiently. In addition, it is possible to more efficiently manage the history information of the screen data displayed on the portable terminal, and also to prevent the infinite loop error by the back function. In addition, it is possible to increase the efficiency of memory usage through efficient history information management in the mobile terminal.

Claims (32)

In the history information management method in a mobile terminal, Extracting previous history information of the event in response to any event execution; Deleting the extracted previous history information; And storing history information of the executed event as an upper index. The method of claim 1, wherein the previous history information extraction process comprises: Determining whether there is a previous history information corresponding to the event; Deleting the previous history information if the previous history information exists; And if the previous history information does not exist, deleting the previous history information and storing the history information. The method of claim 2, And deleting the stored history information when going back after the execution of any event. The method of claim 2, The history information management method for history information in a mobile terminal including the identifier information assigned to the event. The method of claim 2, wherein the determination of the presence of the previous history information, And determining whether there is history information including the identifier of the event. The method of claim 2, The history information management method for history information in a mobile terminal including history information about screen data or music data. In the history information management method in a mobile terminal, Determining whether there is a previous history information on the screen data when outputting the screen data according to an event execution; Storing history information of the screen data together with an identifier of the screen data if the previous history information does not exist; And deleting the previous history information of the screen data if the previous history information exists. The method of claim 7, wherein And storing new history information on the output screen data after deleting the previous history information. The method of claim 8, The history information management method of the mobile terminal further comprises the step of determining whether the presence of the previous history information for the screen data by the identifier of the screen data included in the history information. The method of claim 8, When the history information of the screen data is stored history information management method in a mobile terminal comprising the step of increasing the value of the top index (TOP INDEX) by one. The method of claim 10, The history information management method of the mobile terminal further comprising the step of matching the history information to the top index. The method of claim 8, And deleting a value of a top index (TOP INDEX) by 1 when deleting previous history information of the screen data. The method of claim 8, And moving the positions of other historical information accumulated before the deletion of the previous history information. The method of claim 13, And moving the positions of other history information having an index higher than the index mapped to the previous history information to be deleted. In the history information management method in a mobile terminal, Outputting screen data according to an arbitrary event execution; Determining whether to select a back function while outputting the screen data; Determining the current TOP INDEX when the back is selected; If the top index is 0, terminating the executed event; And if the top index is not 0, deleting history information of the screen data. The method of claim 15, Determining whether there is a previous history information of the screen data when outputting the screen data; Storing the new history information of the screen data after deleting the previous history information if present; And storing the new history information of the screen data if the previous history information does not exist. The method of claim 16, The determination of the current TOP INDEX may include determining a TOP INDEX of a position where new history information for the screen data is added. The method of claim 16, The determination of the current TOP INDEX further comprises the step of determining whether the TOP INDEX is 0 or not. The method of claim 16, And displaying a standby screen set at the end of the event. The method of claim 16, The history information management method of the mobile terminal comprising the step of reducing the top index (TOP INDEX) value by one when deleting the history information. In a mobile terminal, An input unit for receiving numeric / character information and receiving a key signal input in connection with setting of various functions and control of a function of the portable terminal; A memory unit for storing history information on screen data; A display unit for outputting the screen data; History information management device in a mobile terminal including a control unit for controlling the management of the history information for the screen data and its operation. The method of claim 21, The controller compares the history information corresponding to the screen data with previous history information, and when the previous history information exists, controls to delete the old history information and store only the new history information. . The method of claim 22, wherein the control unit The history information management apparatus of the mobile terminal, characterized in that the control to delete the history information of the screen data when detecting the back function request during the screen data output. The method of claim 22, wherein the control unit A history information management unit which checks an identifier (ID) of the screen data according to an event occurrence and determines whether previous history information about the screen data is stored in the memory unit; Device for managing history information in a mobile terminal including an event detection unit for determining whether to request a back function requested by the user during the output of the screen data. 25. The method of claim 24, wherein the history information management unit And delete the old history information when there is the previous history information on the screen data, and map the new history information to the top index (TOP INDEX) to store the history information management device. 25. The method of claim 24, wherein the history information management unit The history information management apparatus of the mobile terminal, characterized in that for moving the position of the history information for the other screen data previously accumulated in the empty space generated by deleting the previous history information. The method of claim 26, And the history information management unit moves the location of other history information having an index higher than the index mapped to the previous history information to be deleted. 25. The method of claim 24, wherein the history information management unit The history information management apparatus of the portable terminal, characterized in that for managing the index for each history information changed in accordance with the deletion, addition, movement of the history information. 25. The method of claim 24, wherein the history information management unit When the previous history index is deleted, the top index (TOP INDEX) is reduced by 1, and when adding new history information, the value of the top index (TOP INDEX) by 1, characterized in that the history information management device in a mobile terminal. 25. The method of claim 24, wherein the history information management unit And ending history of the outputting screen data and deleting history information on the ending screen data based on a cancellation signal transmitted from the event detecting unit. The method of claim 22, wherein the memory unit And history information on the screen data is stored together with identifier information assigned to each screen data. The method of claim 22, wherein the memory unit And a history storage unit for mapping and storing history information on the screen data with an identifier assigned to the screen data.

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