KR950010732B1 - The channel connection for changing battery of cellular phone - Google Patents

Abstract

The method comprises the first step of detecting the input of battery change key, the second step of storing on-line mode and Supervisory Audio Tone (SAT), supplied from a channel and a Cell Site, in a memory unit, the third step of inputting a power key after the battery change, the fourth step of comparing the Supervisory Audio Tone, stored in the memory unit, with the Supervisory Audio Tone, supplied from the Cell Site, and the fifth step of displaying the message "back on-line".

Description

How to connect a call when replacing the battery of the cell phone

1 is a schematic block diagram of a conventional cell phone.

2 is a flow chart for realizing a call connection method when replacing the battery of the cell phone according to the present invention.

The present invention relates to a cellular phone, and in particular, a method of connecting a cell phone when a battery is exchanged so that a user can maintain a continuous call state even after replacing the battery when the call sensitivity decreases due to battery consumption while talking with the other party. It is about.

Generally, the cellular phone stops talking when the power supply is stopped, but the supervisory audio tone (SAT) is transmitted through the voice channel occupied for a predetermined time (about 5 seconds) from the cell site. Supplied to the side.

The conventional cellular phone has a central processing unit 21 for controlling the overall operation of the cellular phone as shown in FIG. 1 of the accompanying drawings, and a receiver for receiving a signal input through the duplexer 25 from the antenna 14. (22) and a transmitter 23 for outputting the transmitted signal to the antenna 14 side through the duplexer 25, and a frequency synthesizer 24 for supplying demodulated and modulated signals to the receiver 22 and the transmitter 23 side. And the telephone number from the keypad 13 and the like are temporarily stored. A memory unit 26 for outputting to the central processing unit 21, a liquid crystal display unit 11 for displaying call information in accordance with data from the central processing unit 21, and a received speech signal for processing a receiving speaker (SPK); And a voice processor 27 for processing the voice signal from the microphone MIC, outputting the voice signal to the central processing unit 21, and outputting the hand signal output sound signal to the buzzer BZ.

Such a conventional cell phone is used during the call with the other party when the battery is depleted and the call sensitivity is reduced, if you want to use a new battery to replace the cell phone power off to stop talking with the other party, replace the battery pack or mechanical There is a problem in that it is necessary to make a new call after receiving the power supply by connecting to the vehicle stand using the method.

The present invention has been made in view of the above problems, when the battery is exhausted while talking to the other party in the cell phone when the call sensitivity is reduced, the replacement of the battery of the cell phone to maintain a continuous call by switching a new battery without interruption of the call The purpose is to provide a city call connection method.

According to an aspect of the present invention, there is provided a cellular phone comprising: a first step of detecting an input of a battery replacement key provided in a keypad when a battery is depleted and a call sensitivity is reduced while talking with a counterpart; If the exchange key input of the battery is not detected after the execution of the step, the call is terminated. If the exchange key input of the battery is detected, the monitoring audible sound and the call mode supplied from the currently occupied voice channel and the cell site are stored. Performing a third step of replacing the battery according to the message “storing completed” displayed on the display unit after the completion of the second step, and inputting a power key; and performing the third step. After detecting the input of the power key, the call is terminated. If the power key is detected, the call is stored in the storage means in the call mode. A fourth step of comparing and checking the audible audible sound at the call stored in the storage means and the audible audible sound supplied from the cell site after battery replacement, if it is not stored in the call mode. And if the comparison-checked audible tone does not match after performing the fourth step, initializes the call when the comparison is confirmed, and if the comparison-checked audible tone matches, the call is transmitted to the cell site and the call is returned. And a fifth step of displaying a message.

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

2 is a flowchart for realizing a call connection method when replacing a battery of a cellular phone according to the present invention.

When the cell phone is initialized (step 1), when the user makes a call and dials the other party's phone number and enters the send key to talk to the desired party and the battery is exhausted and the call sensitivity is reduced ( Step 2, Step 3) The keypad unit detects whether the input of the battery replacement key is supplied (Step 4). If the replacement key of the battery is not detected, the call is terminated to protect the cellular phone device (Step 11). In response to detecting an exchange key input of the battery, the currently occupied voice channel number, the monitoring audible sound, and the call mode state are stored in a memory device F ² PROM (step 5). When the saving is completed, when the message information “Save completed” is displayed on the display unit (step 6), the user replaces the battery within a predetermined time (about 5 seconds) at which the monitoring audible sound is output, and then inputs the power button key (step 7). Step 8) When a battery is detected and an input of a power key is detected, a voice channel, audible audible sound, and call mode data stored in a memory device, E ² PROM, are supplied. At this time, if the call mode is not stored, the call is terminated. If the call mode is stored, the receiving end is tuned by the channel supplied from E ² PROM, and the monitoring audible signal and memory supplied from the cell site side are stored. The device means compares and confirms with the monitoring audible signal stored in the E ² PROM and outputs the transmission signal to the Cell Site side through the voice channel at the time of the call to form a call mode. Display the message to be displayed (step 9 to step 14). If the battery is replaced after the battery is replaced and the power key is not input or after a predetermined time (approximately 5 seconds) of the monitoring audible sound generated from the cell site, the call is interrupted and the voice assigned before the battery is replaced. The channel cannot continue the call. In addition, when the observed and audited audible sound differs from the audible audible sound stored in the EPI, the call ends and terminates.

As described above, when the battery is depleted while talking to the other party and the call sensitivity decreases, the stored audio channel and the call mode supplied from the current occupied voice channel and the cell site are stored in the storage means and then the cell site. If you replace the battery within the time when the supervised audible signal occurs, the power key can be used to continue the call on the voice channel that was used before the battery replacement.

Claims (1)

In the cellular phone, a first step of detecting the input of the battery replacement key provided in the keypad when the battery is depleted during communication with the other party and the call sensitivity decreases, and a replacement key input of the battery is detected after the first step is performed. If it fails to terminate the call, and if it detects an exchange key input of the battery, storing the currently occupied voice channel and the monitoring audible sound and call mode supplied from the cell site in the storage means; If the storage is completed after performing step 2, after replacing the battery according to the message “save completed” displayed on the display unit, enter the power key and if the input of the power key is not detected after performing the step 3, call If it is not stored in the call mode by determining whether the storage device is stored in the call mode when the input of the power key is sensed Ending the call and comparing the monitoring audible sound at the call stored in the storage means with the monitoring audible tone supplied from the cell site after the battery is exchanged if the call is stored in the call mode; A fifth step of initiating and ending the call if the supervised audible tone does not match, and transmitting a transmission signal to the cell site if the non-supervised audible match is matched, returning the call, and displaying a message “call back”. Call connection method when replacing the battery of the cell phone.