KR20020037873A - Method for displaying leave quantity in a battery - Google Patents

Abstract

PURPOSE: A method for displaying a remaining amount of a battery is provided, which provides more convenience in using a terminal by removing an abrupt battery discharge while using the terminal. CONSTITUTION: According to the method for displaying a remaining amount of a battery of a mobile communication terminal comprising a battery, a battery voltage detection part and an LCD display, a voltage detected in the battery voltage detection part is read and a table 1 showing a remaining current ratio to the battery detection voltage stored in a memory is loaded(ST12), if a user selects a battery remaining amount display menu(ST11). The remaining current value corresponding to the detected voltage is extracted(ST13), by comparing the loaded table 1 to the detected voltage. It is checked whether a terminal reception intensity is inputted, and a table 2 showing a comparison of a consumed current value according to the reception intensity stored in the memory is loaded(ST15) if the reception intensity is inputted(ST14). A consumed current value corresponding to the reception intensity is extracted(ST16), by comparing the extracted remaining current value to the consumed current value. A reception standby time and a call possible time are calculated(ST17) by calculating the extracted remaining current value and the consumed current value. Then, the calculated reception standby time and the call possible time are displayed on the LCD numerically(ST18).

Description

How to display remaining battery {Method for displaying leave quantity in a battery}

The present invention relates to a method of numerically displaying the battery available time according to the reception strength, and in particular, after calculating the standby time and the talkable time by calculating the residual current value and the consumption current value, the liquid crystal display (LCD) The present invention relates to a method of displaying a remaining battery capacity by numerically displaying a remaining capacity of a battery so that a user can efficiently use a battery.

In general, terminals (particularly, mobile communication terminals and WLL terminals) use secondary rechargeable batteries such as nickel hydrogen and lithium ions to ensure mobility. Such a terminal battery gradually consumes a little charged current even when it is not used due to its characteristics, which is called a self-discharge. Because of this, the user should always be concerned about whether the battery is remaining. This is to prevent the battery from being discharged while the terminal cannot be used. To this end, the terminal displays the remaining battery level as an icon on the liquid crystal display (LCD) so that the user can easily determine the remaining battery level.

1 is a view showing a discharge curve of a conventional rechargeable battery and a remaining battery display method according to the discharge curve.

Typically, the rechargeable battery has a discharge characteristic according to the discharge curve. Figure 1 (a) shows the discharge characteristics according to the discharge curve of the rechargeable battery. 1 (b) shows a conventional battery remaining amount display method.

The discharge curve was divided into three regions A, B, and C as shown in FIG. Therefore, the remaining battery indicator is divided into three sections, the first, second and third regions, according to the division of the discharge curve as shown in FIG. Of course, depending on the characteristics of the terminal manufacturer may be divided into four displays.

2 is a diagram illustrating a configuration of a battery remaining amount display device of a general WLL terminal.

As shown therein, the analog voltage detected by the battery voltage detector 10 is amplified by the amplifier 20 and the A / D converter 30 allows the terminal to recognize the detected analog voltage. The signal is converted into a digital signal, and the signal converted into the digital signal minimizes the current consumption in the mobile station modem (MSM) 40 to display the remaining battery level on the liquid crystal display (LCD) 50 of the terminal. For reference, the battery A / D converter value of the WLL terminal is divided into 256 steps (0 to 255).

Currently, WLL terminals use nickel-cadmium (Ni-Cd) battery packs and have a capacity of 8.4V and 2000mAh. More specifically, it consists of seven cells, each of which is rated at 1.2V.

For reference, nickel-cadmium batteries have a disadvantage of being memory-effect. Here, the memory effect refers to a phenomenon in which the battery capacity decreases when the battery charging is repeatedly performed while the battery is not completely discharged.

In the conventional WLL terminal as described above, the battery capacity is displayed on the liquid crystal display (LCD) only in 3 to 4 steps. Therefore, by dividing the discharge curve as shown in Figs. 1A and 1B by three, and displaying the remaining battery level, the battery remaining indicator does not display this properly even though the battery is almost exhausted. There was a problem. For this reason, from the user's point of view, it is not possible to know the available call waiting time or the available call time with the remaining battery level. Only based on the user's experience, we were able to determine the approximate amount of time the battery could be used, which makes it possible to charge even when it is necessary to charge and time and economic waste such as charging even though it can be used without charging. It suffered from inconvenience due to sudden discharge while using the terminal.

Accordingly, the present invention has been proposed to solve all the problems occurring in the conventional terminals (particularly mobile communication terminal, WLL terminal) as described above,

An object of the present invention, by converting the remaining capacity of the battery of the mobile terminal in time numerically to the user, so that the user can predict the battery charging and replacement in advance, eliminating inconvenience such as sudden battery discharge during use In addition, the present invention provides a method for displaying the remaining battery capacity to provide a more convenient use of the terminal.

Battery remaining amount display method according to the reception strength according to the present invention for achieving the above object,

When the user selects the remaining battery level display menu, the voltage value detected by the battery voltage detector is compared with the residual current value table (Table 1) for the battery detection voltage stored in the memory in the terminal. Extracting;

Extracting a current consumption value for the reception strength by comparing the reception strength of the terminal with the consumption current value table (Table 2) for the reception strength previously stored in a memory in the terminal;

The method is characterized in that it comprises the step of calculating the received residual current value and the consumption current value to calculate the reception waiting time and talk time, and then numerically displaying the calculated value on a liquid crystal display (LCD). It is done.

1 is a view showing a remaining battery display method of a conventional mobile communication terminal,

2 is a configuration diagram of a battery remaining amount display device of a conventional mobile communication terminal;

3 is a flowchart illustrating a method of displaying battery level according to the present invention.

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

10: battery voltage detector

20: OP AMP

30: A / D Converter

40: main processing unit (MSM; Mobile Station Modem)

50: liquid crystal display (LCD)

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a method of displaying battery level according to the present invention.

As shown in FIG. 1, when the user selects the remaining battery level display menu in step ST11, the amplifier 20 amplifies the analog voltage value detected by the battery voltage detector 10 and deactivates the A / D converter 30. By converting the detected analog voltage into a digital signal so that the terminal can recognize. In step ST12, the value converted into the digital signal is read, and the table 1 showing the residual current value corresponding to the battery detection voltage stored in the terminal memory is loaded. In step ST13, a residual current value corresponding to the detected voltage is extracted by comparing the detected voltage with Table 1 loaded above.

Here, the residual current value with respect to the detection voltage is shown in Table 1 below.

Next, in step ST14, it is checked whether or not the terminal reception strength (sensitivity) is input by the user. In step ST15, when the reception strength is input, table 2 showing the current consumption value according to the reception strength is loaded. In step ST16, the consumption current value corresponding to the reception strength is extracted by comparing the table 2 loaded above with the reception strength.

Here, the current consumption value for the reception strength is shown in Table 2 below.

In step ST17, the residual current value and the consumption current value extracted from the tables 1 and 2, respectively, are calculated to calculate the reception standby time and the available talk time.

Here, in the method of calculating the reception waiting time and the available talk time in step ST17, the reception waiting time and the available talk time can be obtained by dividing the residual current value (Table 1) and the consumption current value (Table 2) previously stored in the terminal. This can be calculated as follows.

First, the reception wait time calculation method is

In the step of extracting the residual current value corresponding to the detected voltage, the residual current value for the detected voltage 9.4V is 2000mAH, and in the step of extracting the consumption current value corresponding to the reception intensity, the reception for the reception intensity 5 When standby current consumption value is 25mA,

The reception waiting time 80H may be calculated by dividing the residual current value 2000mAH and the reception standby consumption current value 25mA as shown in Equation 1 below.

Next, how to calculate the available talk time,

In the step of extracting the residual current value corresponding to the detected voltage, the residual current value for the detected voltage 9.4V is 2000mAH, and in the step of extracting the consumption current value corresponding to the reception strength, the call for the reception intensity 5 When the available current consumption value is 500 mA,

The residual current value 2000mAH and the talkable consumption current value 500mA may be divided by the following Equation 2 to calculate the talkable time 4H.

In step ST18, the reception wait time 80H and the talkable time 4H calculated above are numerically displayed on the liquid crystal display LCD.

In the above example, the values of Table 1 (Table 1) and Table 2 (Table 2) are not actual measured data values, but merely exemplary data. Therefore, in order to use the method proposed by the present invention, it is important to prepare Tables 1 (Table 1) and 2 (Table 2) by measuring residual current values and current consumption values through actual measurements.

The battery remaining amount display method of the terminal according to the present invention can be used for other applications. Looking at another embodiment of the present invention as follows.

By setting an alarm function and a threshold time in the method of displaying the remaining battery power of the present invention, it is possible to automatically notify the user of the battery replacement time of the mobile communication terminal, and the output value of the mobile communication terminal (call waiting time and available call time) is When the alarm goes below the threshold you set, an alarm will sound to inform you of the remaining battery capacity. Referring to Tables 1 and 2 above,

When the call waiting time threshold value is '2H', the call waiting time is repeatedly calculated by applying the value of Table 1 stored in the terminal to [Equation 1], and the calculated value is compared with the threshold value. When '2H' or less, the alarm sounds and automatically monitors the liquid crystal display (LCD) to display the battery level to the user.

In addition, when the threshold value of the available call time is '1H', the value of Table 2 stored in the terminal is repeatedly applied to Equation 2 to calculate the available call time, and the calculated value is the threshold value. When compared to '1H' or less when the alarm sounds and automatically monitors the liquid crystal display (LCD) to display the battery level to the user.

According to the above-described "battery remaining display method" of the present invention, the battery remaining time (call standby and talk time) numerically displayed on the liquid crystal display (LCD) according to the reception strength input by the user of the remaining battery capacity. By doing so, there is an advantage to facilitate the user to manage the battery more efficiently.

In addition, by allowing the user to predict the timing of the battery charging or replacement in advance, there is an effect that can eliminate the inconvenience in use due to sudden battery discharge during use of the mobile communication terminal.

Claims (4)

In the battery remaining amount display method of a mobile communication terminal comprising a battery, a battery voltage detector for detecting the voltage of the battery, and a liquid crystal display for displaying the remaining battery capacity, Reading a voltage value detected by the battery voltage detection unit and loading a table 1 comparing the residual current value with respect to the battery detection voltage pre-stored in a memory in the terminal when the user selects a battery level display menu; Extracting a residual current value corresponding to the detected voltage by comparing the loaded table 1 with the detected voltage; Checking whether the terminal reception strength is input, and if the reception strength is input, loading Table 2 comparing the current consumption values according to the reception strength pre-stored in a memory in the terminal; Extracting a current consumption value corresponding to the reception intensity, by comparing the loaded table 2 with the received reception intensity; Calculating a reception waiting time and a talkable time by calculating the extracted residual current value and a consumption current value; And digitally displaying the calculated reception wait time and talk time on a liquid crystal display (LCD). The method of claim 1, wherein the table 2, A method of displaying battery level, characterized in that the standby current consumption value corresponding to the reception strength and the current consumption value during a call are databased. The method of claim 1, wherein the reception wait time is calculated, And calculating and calculating a residual current value for the detected voltage and a reception standby current consumption value corresponding to the received reception intensity by the following Equation [1]. Equation [1] The method of claim 1, wherein the available time calculation And calculating a residual current value for the detected voltage and a callable consumption current value corresponding to the received reception intensity by calculating the following equation [2]. Equation [2]