KR100357124B1 - Mobile communication system - Google Patents

Abstract

The present invention relates to a mobile communication system. In particular, a mobile communication system suitable for extending a call waiting time of a mobile terminal by automatically turning off the power of a display unit displaying various characters provided by the mobile terminal during a call waiting of the mobile terminal. It is about. Such a mobile communication system includes a display unit for displaying data generated in a terminal, a sensing unit including a switching means for sensing an open and closed state of a flip or a folder of the terminal, and a flip of the terminal according to an output of the sensing unit. Or it comprises a central processing unit for controlling the power of the display unit by recognizing the open and closed state of the folder.

Description

Mobile communication system

The present invention relates to a mobile communication system. In particular, when the mobile terminal waits for a call, the display unit displaying various characters provided by the mobile terminal is automatically turned off so that the call waiting time of the mobile terminal is extended. It relates to a mobile communication system.

Mobile communication refers to a communication in which a subscriber can communicate with a desired party anytime and anywhere while carrying a mobile terminal.

The mobile communication system has changed from analog to digital, and the use of voice and data communication with data added from the center of voice is increasing with the spread of portable information terminals such as a personal computer (PC) and an electronic notebook.

In the near 2000, International Mobile Telecommunication 2000 (IMT-2000) (hereinafter referred to as IMT-2000) promoted by the International Telecommunication Union (ITU) will be introduced. It is expected to enable a wider range of mobile communication services with the aim of ensuring complete mobility of national roaming and mobile terminals.

Wireless communication is the first time that German scientist Hertz succeeded in catching experiments in 1888, and Marconi, who was studying how to send radio waves farther away, succeeded in sending radio telegraphy 3km away in 1893.

Full-scale mobile communication is an analog cellular mobile phone, which was first launched in Chicago in 1978, and Korea started in 1984.

On the other hand, DCN, a code division multiple access method, was commercialized for the first time in Korea in 1996, and since October 1997, personal communication service (PCS) has been launched based on this technology. Started.

Among them, the digital mobile phone is a mobile terminal of a mobile phone system using a frequency of 800 KHz, and the personal mobile communication service uses a frequency of 1.8 GHz.

The mobile terminal controls the output power of the mobile terminal and the base station transmitter in order not to cause excessive interference by transmitting to the transmit power more than necessary when connecting to the base station.

In other words, controlling the transmission power of each mobile terminal and the base station to an appropriate level is called power control so as to maintain stable call quality even at the lowest power level of the signal.

In addition, the transmission output power of the base station is adjusted to a value determined during system design.

Power control can be divided into forward power control and reverse power control.

Among them, the forward power control is to control the power transmitted from the base station to each mobile terminal, and the output power is increased to the mobile terminal that is far away from the base station or has a poor call quality such as a radio wave shadow area. In the mobile terminal having good call quality, the output power is adjusted to minimize the interference between other mobile terminals in the same base station or mobile terminals of adjacent base stations.

In addition, the reverse power control adjusts the transmission power of the mobile terminal so that the mobile terminal close to the base station minimizes the output power of the mobile terminal in a range that does not affect its call quality, and the mobile terminal far from the base station transmits. Increasing the output power ensures stable call quality.

In general, the battery available time of the mobile terminal is about 4 to 6 hours during continuous calls, and about 80 to 90 hours during continuous standby.

The determinants of such battery usage time are slot mode, mobile phone usage, usage area, reception sensitivity, handoff interval, and battery usage time.

At this time, in the slot mode, the mobile terminal periodically communicates with the base station to inform the base station of the location of the mobile terminal to enable a call. The communication time period between the mobile terminal and the base station is called a slot cycle.

In addition, the use area indicates the service state of the used area, and according to the use area, when the air is in the service area, the current consumption is low.

In addition, since the reception sensitivity may be idle in an area where the reception strength is weak, the current consumption is higher than that in a good area, and a large amount of current is consumed when moving rather than a fixed state.

In addition, the mobile terminal periodically communicates with a base station of a corresponding area when moving by vehicle and on foot. In this case, when the mobile terminal is moved by vehicle or on foot, the mobile terminal changes communication from a base station of a corresponding region to a base station of an adjacent region. .

As such, when the mobile terminal is moved by a vehicle or a foot, a handoff occurs. When the handoff occurs, more current is consumed than during a call, and a lot of current is consumed even during a stop in the handoff period.

In addition, since the battery pack is a consumable item, its use time is gradually shorter than when it is purchased, and as the use time is longer, the battery life is shortened. Therefore, when the use time is half of that of the initial purchase, the battery pack should be replaced with a new battery.

In general, a conventional mobile terminal uses a liquid crystal display (LCD) as a screen displaying several characters.

A mobile terminal using such a liquid crystal display uses a battery to ensure the mobility of the terminal as a power source, but the liquid crystal display displays the state of the screen until the battery is completely discharged.

In this case, the screen status display uses a character or a picture symbol.

Pictograms include pictograms indicating the signal strength of the calling area, pictograms indicating the call status, pictograms indicating the non-callable area, pictogram indicating that the ring tone is set to vibrate, text or voice message. There are a picture symbol, a picture symbol indicating that a service area is outside the subscribed service area, and a picture symbol indicating a remaining battery level.

In addition, the character symbol may be a character symbol (for example, one or zero) indicating that the character input is in English or Korean mode, a character symbol (for example, Mr Hong Gil-dong) indicating the user's name, the current date, and A character symbol representing a time (for example, December 25 at 12:00 p.m.) and a character symbol representing a locked or no service status (for example, locked or No Service).

Conventional mobile terminals are representative of a flip type and a folder type. A flip type prepares to receive a user's command from a central processing unit of a mobile terminal when a user opens a flip, and is in a standby state when the flip is closed.

In the case of the folding type, the mobile terminal is folded, and when the mobile terminal is unfolded, the user recognizes that the mobile terminal is to be used and prepares to receive a command through the keypad portion.

Such a conventional mobile communication system has the following problems.

First, after the power (battery) is turned on, the LCD remains on until the power is turned off (until the battery is fully discharged). Even in this state, the liquid crystal display displays basic character symbols, picture symbols, and the like, and the current of the mobile terminal continues to be consumed. Therefore, there was a problem that the call waiting time is shortened.

Second, in the case of the clamshell, the folder is folded when waiting. Since the LCD is covered by the folder when waiting for a call, the LCD stays on even though the LCD does not need to be turned on. There was a problem that consumption occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and when the flip or folder of the mobile terminal is closed, the liquid crystal display device is automatically turned off to improve the standby time of the mobile terminal. It is to provide a mobile communication system.

According to an aspect of the present invention for achieving the above object, a display unit for displaying data generated in the terminal, and a sensing unit consisting of switching means for detecting the open and closed state of the flip or folder of the terminal and And a central processing unit for controlling the power of the display unit by recognizing the open and closed states of the flip or folder of the terminal according to the output of the sensing unit.

According to the present invention as described above, when the mobile terminal is not in use, the standby time of the mobile terminal can be extended by turning off the liquid crystal display.

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a mobile communication system of the present invention.

As shown in FIG. 1, the mobile communication system includes a display unit 1 for displaying various characters, a detector 3 for detecting opening and closing of a flip (not shown) or a folder (not shown). And a central processing unit 2 for controlling the display unit 1 and the sensing unit 3.

In this case, the display unit 1 is a flat panel display device that displays characters or symbols, such as a liquid crystal display (LCD) and a plasma display panel (PDP), and is operated by receiving power from a battery of a mobile terminal. to be.

In addition, the sensing unit 3 is configured as a sensor or a switch for detecting that a flip or a folder of the mobile terminal is opened or closed.

In addition, when the sensing unit 3 detects that the flip or folder of the mobile terminal is opened or closed, the central processing unit 2 recognizes this so that the power of the display unit 1 is automatically turned on / off.

The operation of the present invention mobile communication system having such a configuration is as follows.

Flip or folder type mobile terminal (not shown) When the user closes the flip or folder, the power supply voltage Vcc is applied to the central processing unit 2 as the switch constituting the sensing unit 3 is turned on. The central processing unit 2 recognizes this and outputs a disable signal to the display unit 1 composed of a liquid crystal display (LCD), and the display unit 1 accepts this and disables the liquid crystal display. .

On the contrary, when the user of the flip or folder-type mobile terminal opens the flip or folder, the power supply voltage Vcc supplied to the central processing unit 2 is cut off as the switch constituting the sensing unit 3 is turned off. The central processing unit 2 recognizes this and outputs a liquid crystal display enable signal to the display unit 1, and the display unit 1 accepts it and enables the liquid crystal display to display various characters or symbols. .

As a result, when the user of the mobile terminal opens or unfolds a flip or a folder to use the mobile terminal, the liquid crystal display is enabled as the switch constituting the sensing unit 3 is turned off, and the user views the liquid crystal display next. On the contrary, when the user closes or folds the flip or folder to make the standby state not using the mobile terminal, the liquid crystal display is in a disabled state so that the battery power of the mobile terminal is not supplied to the display unit 1. Done.

In this case, the operation may be reversed as described above.

That is, when the sensing unit 3 opens or unfolds a flip or folder, the switch is turned on, and when the flip or folder is closed or folded, the switch is turned off. In the off state, the liquid crystal display device is also in a disabled state, and conversely, when the switch is on, the liquid crystal display device is also in an enabled state.

In addition, as described above, instead of configuring the sensing unit 3 as a switch, the sensing unit may be configured as a sensing sensor that detects an open and closed state of a flip or a folder, and the operation may use the method described above.

For reference, the current consumption of the existing mobile terminal during call waiting is about 5mA, and the current consumption for displaying various characters on the liquid crystal display is about 0.5mA.

In the mobile communication system of the present invention as described above has the following advantages.

First, since the on / off of the liquid crystal display device can be automatically adjusted according to the use state of the mobile terminal, battery consumption can be minimized.

Second, it is easy to miniaturize the mobile terminal because it is possible to increase the use time of the battery, which is expected to occupy the largest part in the light and short and short size of the mobile terminal.

1 is a block diagram of a mobile communication system of the present invention

Explanation of symbols for the main parts of the drawing

1: display unit 2: central processing unit

3: detection unit

Claims (1)

A display unit for displaying data generated in the terminal; A sensing unit comprising switching means for sensing an open and closed state of a flip or folder of the terminal; And a central processing unit configured to control the power of the display unit by recognizing the open and closed states of the flip or folder of the terminal according to the output of the sensing unit.