KR970008674B1 - Method for displaying usable period of the cellular phone - Google Patents

Abstract

A method for indicating an available time of a terminal is disclosed. The method for indicating the available time of the terminal is aimed at providing a method for indicating an available time of a terminal and make it possible for a user to use the power efficiently by providing a function which shows the user how long the terminal can be used before it's recharged. Thereby, the method for indicating the available time of the terminal may allow a user to use efficiently the recharged power.

Description

How to display the available period of the terminal

1 is a block diagram showing an embodiment of a general DECT terminal.

FIG. 2 is a flow chart showing step by step an embodiment of general DECT terminal processing of FIG. 1 according to the DECT standard. FIG.

3 and 4 are flowcharts showing step by step an embodiment of a method for displaying the available period of another terminal in the present invention.

The present invention relates to a portable terminal of the DECT (Digital European Cordless Telecommunications) method, and more particularly, to a method of displaying the available period of the terminal suitable for displaying the usage time of the portable terminal after charging.

In this regard, FIG. 1 is a block diagram showing an embodiment of a general DECT terminal, including a central processing unit (CPU) 2 having a baseband processing function for controlling overall operation of the terminal, A power supply unit 4 controlled by the central processing unit 2 to indicate the current power state of the terminal, a power supply unit 6 controlled by the central processing unit 2 to supply power for operating the terminal to the terminal system; A microphone 8 for converting a voice signal into an electric analog voice signal, an analog-digital converter 10 for converting an analog voice signal of the microphone 8 into a digital signal, The digital voice signal of the analog-to-digital converter 10 is converted into ADPCM (Adaptive Differential Pulse Code Modulation) data and applied to a digital signal processing (DSP) processor 14. A digital signal processing processor 14 which communicates with an ADPCM-PCM (Pulse code Modulation) conversion unit 12 and a central processing unit 2 to digitally process digital signals according to a speech coding method used in the DECT standard; A PCM-ADPCM converter 16 for converting ADPCM data of the digital signal processing processor 14 into PCM data, and a digital-analog converter for converting PCM data of the PCM-ADPCM converter 16 into an analog signal ( 18), a speaker 20 which is driven by an analog signal of the digital-to-analog converter 18 to output voice, and the voice data encoded by the ADPCM from the central processing unit 2 to a carrier for modulation. A signal synthesizer 22 for carrying and modulating the signal, a signal amplifier 24 for amplifying the modulated signal of the signal synthesizer 22 to a level defined by DECT, and amplified signal 24. Spreads the signal in the air An antenna 26 for receiving a call, a low noise amplifier 28 for receiving low frequency amplification of a high frequency signal from a fixed station received through the antenna 26 during a reception period, and a low noise amplifier An intermediate frequency converter 30 for converting the received high frequency signal of (28) into an intermediate frequency and an original signal transmitted from the intermediate frequency of the intermediate frequency converter 30 are extracted and applied to the central processing unit 2. A demodulation section 32 to be input, a key input section 34 for inputting a call to the central processing unit 2, a screen display section 36 for displaying a longitudinal state by receiving a signal from the central processing unit 2, Buzzer 38 for generating a special sound generated for use of a terminal such as a key input and a bell by receiving a signal from the central processing unit 2, and an initial state of the volume under the control of the central processing unit 2; Ipyrom which records various phone numbers (Electrically Erasable Programmable Read Only Menory; EEPROM) 40, a ROM 42 storing data for operation of the entire processor by the central processing unit 2, and a longitudinal operation by the central processing unit 2; And RAM 44 which temporarily stores the parameters.

Referring to FIG. 2, a general DECT terminal made in this way is as follows.

First, the central processing unit 2 has a baseband processing function for controlling the overall operation of the terminal, and the power display unit 4 is controlled by the central processing unit 2 to indicate the current power state of the terminal. By using light emitting elements such as diodes), the user can know the current state of power on / off of the terminal.

Next, the power supply unit 6 is controlled by the central processing unit 2 to supply power for operating the terminal, and the microphone 8 converts a voice signal by the user into an electrical analog voice signal, and converts the analog-digital conversion. The unit 10 converts the analog audio signal of the microphone 8 into a digital signal.

The ADPCM-PCM converter 12 converts the digital voice signal of the analog-digital converter 10 into ADPCM data and applies it to the digital signal processing processor 14, and the digital signal processing processor 14 performs central processing. It communicates with the apparatus 2 and processes the digital signal according to the speech coding method used in the DECT standard.

In addition, the PCM-ADPCM converter 16 converts ADPCM data of the digital signal processing processor 14 into PCM data, and the digital-analog converter 18 converts the PCM data of the PCM-ADPCM converter 16 into analog. The signal is converted to a signal, and the speaker 20 outputs a voice by the analog signal of the digital-analog converter 18 so that the user can hear the voice.

Next, the signal synthesizing unit 22 receives the voice data encoded by ADPCM from the central processing unit 2 and modulates it on a carrier for modulation of 1.8 GHz for wireless transmission, and the signal amplifying unit 24 is a signal synthesizing unit 24. The modulated signal at 22 is amplified to a level defined by the DECT, and the antenna 26 propagates the amplified signal of the signal amplifier 24 in the air and receives the signal in the air.

Accordingly, the low noise amplifier 28 receives the 1.8 GHz signal of the fixed station received through the antenna 26 during the reception period of the terminal and performs low noise amplification, and the intermediate frequency converter 30 of the low noise amplifier 28 The received frequency of 1.8 GHz is converted into an intermediate frequency of 110 MHz, and the demodulator 32 extracts the original signal transmitted from the intermediate frequency of 110 MHz of the intermediate frequency converter 30 and applies it to the central processing unit 2. do.

The key input unit 34 inputs a call to the central processing unit 2, and the screen display unit 36 receives a signal from the central processing unit 2 and uses a display element such as an LCD (Liquid Crystal Display). The bell state 38 is displayed, and the buzzer 38 receives a signal from the central processing unit 2 to generate a special sound generated for use of a terminal such as a key input and a bell so that the user can hear it. ) Records the initial state of the volume and various telephone numbers by the central processing unit 2, and the ROM 42 stores the non-volatile data for the operation of the entire terminal by the central processing unit 2, 44 temporarily stores the parameters for longitudinal operation by the central processing unit 2.

FIG. 2 is a flowchart showing step by step an embodiment of the general DECT terminal processing of FIG. 1 according to the DECT standard, that is, an algorithm of the central processing unit 2.

First, when the power is turned on, the initial value of the hardware is read from the ROM 42 or EPI rom 40 to initialize the respective hardware, and the RAM 44 is inspected and cleared. After operating a diagnostic program or the like to check the basic abnormality of the hardware, the radio station receives the signals from the radio station 10 times from wireless "channel 0" to number 9 (100, 102, 104, 106, 108, 110, 112).

The received field strengths for all 10 radio channels are examined to determine the connection to the wireless station that emits the strongest radio signal, and the criteria for various timings within the terminal are determined based on the signal sent from that station. To be as motivated as possible (114).

Thereafter, the radio station checks whether there is an empty time slot by checking a time slot usage state of the radio station, and then performs a registration procedure (116).

At this time, the terminal enters the standby state after completing the registration procedure, the operation of the terminal proceeding in the standby state can be divided into four.

First, the terminal checks for the presence of a paging signal from the fixed station, and if there is a paging signal, first accesses a medium access control (MAC) layer to secure a time slot use right of the wireless channel. The connection of the DLC (Data Link Control) layer and the network (Network) layer are sequentially performed to form a call path and then proceed with the call (118, 120, 122, 124, 126).

Thereafter, due to any one call disconnection situation, the network layer may be disconnected, the DLC layer may be disconnected, and then the MAC layer may be disconnected to release the radio channel and enter the standby state again (128, 130, 132).

On the contrary, if there is no paging signal, the terminal user examines a connection request to a specific subscriber, and if a request occurs, if there is an empty time slot by checking the existence of an empty time slot to secure use of the time slot. If the time slot is not empty, wait until the time delay exceeds the set value until the end of use of another user's time slot. When the use of another user's time slot ends, an attempt is made to access the MAC layer using the time slot (134, 136).

Subsequently, access to the MAC layer is secured to secure the time slot use right of the wireless channel, and access to the DLC layer and network layer are sequentially performed to form a call path and then proceed with the call (138, 140, and 142).

Subsequently, due to one call disconnection situation, the network layer is disconnected, the DLC layer is disconnected, and then the MAC layer is disconnected to release the radio channel and enter the standby state again (144, 146, 148).

At this time, after there is no paging signal and the user's transmission request or the processing (step 132 or step 148) is completed, the state check in the terminal is performed.

A typical internal condition check is the voltage level check of the supply battery.

First, input the voltage of the battery through a circuit that converts an analog signal into a digital signal to check whether it is at an appropriate level. If it is below the appropriate level, a battery charge warning signal is generated to display a message such as, for example, “charge required”. The user is notified of the need for charging and receives a signal from the fixed station to check whether it maintains an appropriate signal level or whether the signal level is too low to attempt to connect to an adjacent fixed station (150, 152, 154, 156, 158).

If the fixed station signal level is -83dBm or more, the signal status of the currently registered station is maintained as it is. If the signal level drops below a certain value and a mobile connection to the previous station is required, the radio channel is changed from "0" to " First, up to 9 ", the registration deregistration process of releasing the state registered in the current fixed station is performed (160).

Subsequently, signals from the radio fixed station are received again over the radio " channel 0 " through " 9 " (10, 162, 164, 166, 168, 170, 172).

Therefore, the received electric field strengths for all 10 radio channels are examined to determine the connection to the radio station which emits the strongest radio signal among them, and the criteria for various timings in the terminal are based on the signals sent from the radio station. (174,176)

Thereafter, the radio station checks whether there is an empty time slot by checking the time slot usage state of the radio station, and then performs a new registration procedure (116).

That is, in the standby state, as described above, it is determined whether or not there is a paging signal from the fixed station, and the processing thereof is performed, the transmission request of the user is processed and the processing thereof is performed, and it is checked whether the battery voltage is at an appropriate level. The basic form of the entire DECT terminal processing is to perform a process for it, inspect the signal level of the fixed station, proceed with it, and perform various timer processing of other terminals.

Here, the terminal according to the prior art is consumed by the power consumption in the standby state and power consumption in the standby state after charging once, and each of the three rough power consumption is as follows.

1. Power off state: almost no power usage.

2. Standby state at power on: Power fine use.

3. Call state: Power over use.

However, in such a conventional technology, only the voltage level of the terminal is measured to fall below the reference value, indicating a bad state of the battery. There is a problem that can only be judged by experience whether it is possible.

The present invention has been made to solve the above-mentioned shortcomings, the function of storing the use time of the terminal for the call waiting time, the duration of the call to indicate how long it can be used until the next recharge It is an object of the present invention to provide a method for displaying the available period of the terminal to enable the user to efficiently use the charged power to have a.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention for achieving the above object is as follows.

First, the charging characteristics of the rechargeable battery and the discharge contents under a specific load state are provided in the form of a data book from the manufacturer of all rechargeable batteries.

The amount of power charged by the current supply amount at the time of charging, such as metal charge or fine charge, of the rechargeable battery can be known from the data book.

Accordingly, the power usage of a device such as a DECT terminal can determine how much power each consumes according to a power off state, a reception standby state, and a call state.

Therefore, the charging current at the time of charging the rechargeable battery is determined by the charger manufacturer, and thus the value is known. Also, the power consumption in the standby state can be known by the measurement at the time of manufacture. This can be seen from the data book of the parts and the values measured during manufacture.

That is, the charging period is calculated from the charging start time, the time required in the reception standby state, the time required in the busy state is calculated, and the amount of power at the time of charging is "+", and the power consumption in the reception standby state is "-" And when the sum of the power consumption during the call "-" can be calculated, the remaining power can be calculated, the remaining power can be kept for a few hours in the standby state, how many minutes can be in the call state Can generate data

Such data can calculate power consumption according to the user's use after charging and can provide the user with useful information on how much can be used without recharging in the future.

3 and 3 are flowcharts showing step by step an embodiment of a method for displaying the available period of a terminal according to the present invention.

The contents of FIG. 2 described above will be referred to on the premise of description, without again being mentioned.

First, a step (200, 202, 204, 206, 208) is performed to check the passage of time and calculate the amount of standby time by operating a timer between the performing steps 116 of the step 114 of selecting the radio station of the strongest signal.

Next, a timer is operated between the network connection step 124 and the call step 126, and the talk time is converted into the amount of power between the call step 126 and the network release step 128, and the amount of the talk time is compared with the remaining power amount. The difference is calculated and updated with the current power.

In addition, a timer is operated between the network connection step 140 and the call step 142, and the talk time is converted into the amount of power between the call step 142 and the network release step 144, and the amount of the talk time is compared with the remaining power amount. The difference is calculated and updated with the current power.

Then, the timer is operated between the handover performing step 176 and the battery checking step 150 to check the elapsed time, calculate the amount of standby time, update the usage period of the terminal, and then, according to the charging time, according to the charging time. The amount of power is calculated to update the usage period of the terminal (300, 302, 304, 306, 308, 310, 312, 314, 316, 318).

As described above, the present invention allows the user to efficiently use the charged power by having a function indicating how long the terminal can use.

Claims (1)

A central processing unit (CPU) 2 having a baseband processing function for controlling overall operation of the terminal, and a power display unit controlled by the central processing unit 2 to indicate a current power state of the terminal. (4), a power supply unit (6) for controlling the central processing unit (2) to supply terminal operating power to the terminal system, and for modulating voice data encoded by ADPCM from the central processing unit (2). A signal synthesizer 22 for carrying and modulating the carrier, a signal amplifier 24 for amplifying the modulated signal of the signal combiner 22 to a level defined by DECT, and the signal amplifier 24 Antenna 26 for propagating the amplified signal in the air and receiving the high frequency signal in the air, and receiving a high frequency signal from the fixed station received through the antenna 26 during the reception period. A low noise amplifier 28 for amplifying, an intermediate frequency converter 30 for converting the received high frequency signal of the low noise amplifier 28 into an intermediate frequency, and an intermediate frequency of the intermediate frequency converter 30 A demodulator 32 for extracting the original signal transmitted to the central processing unit 2, a key input unit 34 for inputting a call to the central processing unit 2, and the central processing unit ( It comprises a screen display unit 36 for displaying the bell state by receiving the signal of 2), and receives the strongest signal after performing the first step (100, 102, 104, 106, 108, 110, 112) and all the channels of the fixed station and the first step (100, 102, 104, 106, 108, 110, 112) A second step 114 and a second step of determining a connection to the fixed station to be sent and synchronizing to be a reference for various timings in the terminal based on a signal sent from the fixed station; 114) If there is an empty time slot of the fixed station after performing the third step (116) to perform the registration procedure, and if there is a paging signal after performing the third step 116 to secure the time slot use rights of the channel and A fourth step (118, 120, 122, 124, 126) to form a call path and then proceed with the call; and a fifth step (128, 130, 132) of releasing the license of the channel and entering the standby state again after performing the fourth step (118, 120, 122, 124, 126); When there is no paging signal in the fourth step (118, 120, 122, 124, 126), if a request for connection to a specific subscriber of the terminal user occurs, if there is an empty time slot, a request for use of the time slot is made to the fixed station, and the time slot is not empty. If not, wait until the time delay does not exceed the value set until another user finishes using the time slot. In the meantime, when another user's use of the time slot ends, sixth steps 134 and 136 attempt to access the MAC layer using the time slot, and after the sixth step 134 and 136, the MAC layer is accessed. A seventh step (138, 140, 142) to secure the time slot use rights of the channel and proceed with the call; and an eighth step (144, 146, 148) to release the channel and enter the standby state when the call is disconnected after performing the seventh step (138, 140, 142). If the paging signal and the user's transmission request is not there, or after the step 132 or step 148 is finished, the ninth step of performing a state check in the terminal, and if the battery level is below the appropriate level after performing the ninth step Generate a battery charge warning signal and receive a fixed station signal to maintain the proper signal level or the signal level will be too low After performing the tenth step (150, 152, 154, 156, 158) to check whether a connection to the station is attempted, and if the signal level of the fixed station is appropriate after performing the tenth step (150, 152, 154, 156, 158), the signal state of the station currently registered is maintained as it is. If the signal level is not appropriate, the eleventh step 160 of releasing the state registered in the current station, the twelfth step of receiving all channels of the station after the eleventh step 160 (162, 164, 166, 168, 170, 172), After performing the twelfth step (162, 164, 166, 168, 170, 172), the electric field strength of the channel is examined to determine the connection to the station that emits the strongest wireless signal, and the synchronization is performed based on the signal sent from the station to be a reference for various timings in the terminal. In the wireless mobile communication terminal performing a thirteenth step (174, 176) to match the second, the second Checking the passage of time between the system 114 and the third step 116 and calculating the amount of standby time (200, 202, 204, 206, 208), and operating a timer between the network connection step 124 and the call step 126. And converting the talk time into a power amount between the call step 126 and the network release step 128, calculating a difference from the remaining power amount, and updating the current power amount to the current power amount. Operating a timer between the call step 142 and the call step 142, converting the talk time between the call step 142 and the network release step 144 into a power amount, and calculating a difference from the remaining power amount. Updating the current amount of power, and calculating the amount of standby time between the handover performing step 176 and the battery checking step 150 to change the usage period of the terminal. Step (300,302,304,306,308), when the charge method of displaying the available period of the terminal made by a step (310,312,314,316,318) for calculating the amount of power to renew the service life of the device in accordance with the charging time.