KR100659258B1 - Method for reducing power consumption in portable terminal - Google Patents

Abstract

A method for preventing power consumption in a mobile terminal is provided to increase a usage time of a battery by checking an amount of the battery power. When a low power mode is set in a mobile terminal, it is checked whether an amount of power of a battery of the mobile terminal is smaller than or the same as an amount of previously determined low power of the battery(301,303,305). If the checked amount of power of the battery is smaller than or the same as the amount of low power of the battery, a slotted mode is changed to a sleep mode(307). When a call origination is requested in the sleep state, the slotted mode is changed to a wake-up state to perform a searching operation, and a base station is acquired to connect a call(309,311,313).

Description

How to prevent power consumption on your mobile device {METHOD FOR REDUCING POWER CONSUMPTION IN PORTABLE TERMINAL}

1 is a view showing a state of a conventional slot mode,

2 is a block diagram showing a block configuration of a portable terminal according to the present invention;

3 is a flowchart illustrating a flow of a method for preventing battery consumption of a portable terminal according to an embodiment of the present invention; and

4 is a diagram illustrating a state of a slot mode according to an embodiment of the present invention.

The present invention relates to a method for saving a battery of a portable terminal, and in particular, when the power of the battery is determined to be below a certain value, the portable terminal is switched to a sleep mode by limiting a slot mode for limiting a reception function of the portable terminal. To reduce battery consumption.

Recently, with the rapid development of the portable terminal, a portable terminal capable of wireless voice call and information exchange has become a necessity. In the early days of portable terminals, it was recognized that they could simply be carried and wirelessly talked. However, with the development of the technology and the introduction of wireless Internet, the portable terminals are not only for the purpose of telephone calls but also for watching games, satellite broadcasting, and short-range communication. The range of applications such as remote control using a digital camera, image capture by a digital camera, and schedule management is increasing to meet the needs of users.

However, due to the rapid development of the portable terminal, the size of the battery is getting smaller and smaller size, but the development of the battery compared to the development of the portable terminal is insufficient and limits the capacity of the battery.

In order to support many functions of the portable terminal with such limited battery capacity, it is necessary to increase the battery capacity and reduce the battery consumption.

Among the functions of the portable terminal, the typical battery consumption functions include call reception, music listening, video viewing, and camera functions, but battery consumption occurs even in a standby state for checking a paging message received from a base station.

In particular, in order to check for paging messages in the standby state, the paging channel must be periodically monitored. This method requires considerable power consumption, which shortens the use time of the portable terminal with a battery of a given capacity.

1 is a view showing a state of a conventional slot mode for solving the above problem.

Referring to FIG. 1, in a code division multiple access (CDMA) mobile communication system, a portable terminal wakes up only during a paging slot allocated to itself in a standby mode. 105, 107) to monitor the paging signal (call channel), and perform a slotted mode (sleep) (sleep) (111, 113, 115, 117) during the slot that is not assigned to itself. As such, the portable terminal without communication performs a slot mode to reduce power consumption.

However, in the slotted mode, a method of periodically checking a message even when a battery is exhausted may fail to use a function of a portable terminal.

Therefore, when a specific value of the battery is confirmed, a method of extending the use time of the portable terminal when charging is impossible by setting to limit the performance of the slotted mode to prevent power consumption of the battery is required.

Accordingly, an object of the present invention is to provide a method for increasing the use time of a battery of a portable terminal.

Another object of the present invention is to provide a method of increasing the use time of a battery by checking the amount of a specific battery in a portable terminal.

Still another object of the present invention is to provide a method of increasing a battery usage time by switching a slot mode to a sleep state when a specific amount of battery is confirmed in a portable terminal.

According to a first aspect of the present invention for achieving the above object, in a method for preventing power consumption in a low power mode of a portable terminal, when the low power mode is set, the amount of battery of the portable terminal is less than the predetermined low power battery amount Checking whether the amount is less than or equal to the battery, changing the slot mode to a sleep state when the amount of the identified battery is less than or equal to the low power battery, and waking up the slot mode when a call request is detected in the sleep state. The present invention provides a method comprising performing a search operation by changing to, and acquiring a base station to connect the call.

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

Hereinafter, the present invention will be described with respect to a technique for increasing the battery usage time by changing to the sleep mode when the predetermined amount of battery in the portable terminal is confirmed. Hereinafter, the state changed to the sleep mode is defined as a "low power mode".

2 is a block diagram illustrating a block configuration of a portable terminal according to the present invention.

In the following description, the portable terminal includes a cellular phone, a personal communication system (PCS), a personal data assistant (PDA), and an international mobile telecommunication-2000 (IMT-2000) terminal. The following description will be described with the general configuration of the above examples.

Referring to FIG. 2, the portable terminal includes a keypad 202, a display unit 204, a memory unit 206, a control unit 208, a communication unit 210, and a codec 212.

The control unit (MPU: Micro-Processer Unit) 208 controls the overall operation of the portable terminal. For example, if the low power mode is set in accordance with the present invention in addition to the usual functions and performs processing and control for voice call and data communication, the available amount of battery is checked, and the identified battery amount is preset. If less than the amount of battery, it handles the function to put the slot mode to sleep. Therefore, in the following description, description of the processing and control of the conventional control unit 200 is omitted.

The memory unit 206 includes a read only memory (ROM), a random access memory (RAM), and a flash ROM, and the ROM includes a program for processing and controlling the controller 208. The microcode and various reference data are stored, and the battery information set to switch the slot mode to the sleep state under the control of the controller 208 is stored according to the present invention. The RAM is a working memory of the controller 208 that stores temporary data generated during various program executions. The flash ROM stores various updatable data for storage such as a phone book, an outgoing message, and an incoming message.

Key pad 202 is a numeric key buttons of 0 to 9, menu button (menu), cancel button (clear), confirmation button, call button (TALK), end button (END), Internet access button, A plurality of function keys such as navigation key (or direction key) buttons (▲ / ▼ / ◀ / ▶) are provided, and key input data corresponding to a key pressed by a user is provided to the controller 208. The display unit 204 displays status information generated during the operation of the portable terminal, a limited number of characters, a large amount of moving images and still images, and the like. The display unit 204 may use a liquid crystal display (LCD) and output a stored message.

The codec (Coder-Decoder) 212 connected to the control unit 208 and the speaker 216 and the microphone 214 connected to the codec 212 are voice input / output blocks used for phone calls and voice recording. . The codec 212 converts the PCM data provided from the controller 208 into an analog voice signal, transmits the same through the speaker 216, and converts the voice signal received through the microphone 214 into PCM data. It is provided to the control unit 208.

The communication unit 210 performs a function of channel decoding the received signal by decreasing the frequency of the radio frequency signal received through the antenna when receiving, and channel coding and raising the frequency when transmitting. Then transmit it through the antenna.

3 is a flowchart illustrating a method of preventing battery consumption of a portable terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 3, first, in step 301, the controller 208 of the portable terminal determines whether a low power mode setting is detected. The low power mode setting may be set by a user's key manipulation, or may be selected and set from a plurality of predetermined setting values provided to the portable terminal. For example, the user may set the displayed default value (eg, 10%) to increase or decrease the amount of battery using the up key or the down key.

If the low power mode setting is not detected, the controller 208 proceeds to step 325 to perform a corresponding mode (eg, a standby mode).

On the other hand, if the low power mode setting is detected, the control unit 208 proceeds to step 303 to check the available amount of the battery, and the control unit 208 proceeds to step 305 to determine the battery with a predetermined battery amount. Check for less than quantity.

If the checked battery amount is greater than the preset battery amount, the controller 208 proceeds to step 303 to perform the process of checking the amount of battery.

On the other hand, if the checked battery amount is less than the predetermined battery amount, the controller 208 proceeds to step 307, and changes the slot mode to the sleep state. The sleep state is a state in which a power source (driving power source) provided in other components except for the minimum control unit is cut off, and a transmission / reception function (tx / rx) does not operate.

In operation 309, the controller 208 determines whether a transmission event requesting transmission is detected. Here, the outgoing event is an outgoing key input by a user's key manipulation, and means an outgoing key input for voice call or text message transmission.

If the originating event is not detected, the controller 208 proceeds to step 323 to maintain a sleep state and proceeds to step 309.

On the other hand, if the originating event is detected, the controller 208 proceeds to step 311, and after the search of the base station starts, the controller 208 proceeds to step 313 to connect the call. Here, the method of connecting a call after searching of the base station performs a search operation by waking up the slot mode, acquisting the base station to acquire synchronization, and then connecting the call.

In step 315, the controller 208 checks the termination of the connected call.

If the end of the call is not detected, the controller 208 proceeds to step 327 to maintain a call, and the controller 208 performs a process of checking the end of the connected call in step 315. .

On the other hand, if the end of the call is detected, the controller 208 proceeds to step 317 to switch to the low power mode to change the slot mode to the sleep state. Herein, the low power mode can be released by a user's key manipulation.

Thereafter, the controller 208 ends the present algorithm.

4 is a diagram illustrating a slot mode state of a portable terminal when setting a low power mode according to an embodiment of the present invention.

Referring to FIG. 4, when the low power mode is not set or when a predetermined amount of battery is not detected in the low power mode, the portable terminal wakes up only during a paging slot allocated to itself in the standby mode. monitors the paging signal (call channel) and sleeps (401) during a slot not allocated to itself.

Then, when the predetermined amount of battery is detected in the full power mode (403), the portable terminal cuts off the power (driving power) provided in the remaining components except for the minimum control portion, and transmits and receives (tx / rx). A sleep state 405 in which the function does not operate is maintained.

If the originating request 407 is detected in the sleep state, the portable terminal wakes up the slot mode to perform a searching operation, acquires a base station, and synchronizes with the base station. It acquires and connects the call (409), after changing the state of the slot mode (405) to the sleep state after the end of the transmission and reception (tx / rx) function to maintain a state that does not operate.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention is a method of increasing the service life of the battery of the portable terminal, in order to check the paging message in the standby state, to solve the battery consumption problem that occurs in the process of periodically monitoring the paging channel When the power is determined to be below a certain value, the slot mode is kept in a sleep state to provide a method of preventing battery consumption.

Claims (4)

A method for preventing power consumption in a low power mode of a portable terminal, When the low power mode is set, checking whether the battery amount of the portable terminal is less than or equal to a predetermined low power battery amount; Changing the slot mode to a sleep state if the identified battery amount is less than or equal to the low power battery amount; If a call request is detected in the sleep state, changing the slot mode to a wake-up state to perform a searching operation, acquiring a base station, and connecting the call; . The method of claim 1, Checking the termination of the connected call after the call connection; And when the termination of the connected call is confirmed, changing the slot mode to a sleep state. The method of claim 1, Wherein the low power battery amount is a predetermined amount of battery which is a reference for switching to the low power mode that limits the reception function of the portable terminal. The method of claim 3, wherein The setting of the low power battery amount may be set using a keypad of the portable terminal or selected from a plurality of predetermined setting values provided to the portable terminal.

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