KR970003975B1 - Method for prohibiting message of the cellular phone - Google Patents

Abstract

A telecommunication prohibition method of a terminal transmits a specific number after a communication state of the terminal, thus a transmission function of the terminal makes it impossible. The method displays a communication prohibition state in case of a telecommunication prohibition state, performs a battery check step(150), performs MAC connection step(136) in case of no telecommunication prohibition, performs a hand-over step(176), stops a telecommunication function when there is a telecommunication prohibition state. If there is no telecommunication prohibition signal and the telecommunication prohibition is released, performing a telecommunication function is possible, and then a registration performing step(116) is made. A secret number for a telecommunication prohibition is set as a key input method. The telecommunication prohibition method includes the steps of: monitoring a DTMF signal receiving; checking that DTMF signal corresponding to the secrest number is successively received; prohibiting a transmission function in case of the secret number input; checking that DTMF signal corresponding to a telecommunication prohibition release is successively received; and restarting a transmission function when the telecommunication prohibition release signal is received.

Description

How to Do Not Call on Your Device

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 flow charts showing step by step an embodiment of a method for preventing a call of a terminal according to the present invention.

The present invention relates to a portable terminal of the DECT (Digital European Cordless Telecomm-unications) method, and more particularly, to a method for preventing a call of a terminal suitable for banning a call of the terminal.

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 a 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 the digital signal processing (DSP) processor 14. A digital signal processing processor 14 which communicates with the ADPCM-PCM (Pulse Code Modulation) converting unit 12, the central processing unit 2, and digitally processes the digital signal according to the speech coding method used in the DECT standard; PCM-ADPCM conversion unit 16 for converting ADPCM data of digital signal processing processor 14 to PCM data, and digital-analog conversion unit 18 for converting PCM data of PCM-ADPCM conversion unit 16 to analog signals. ), A speaker (20) driven by an analog signal of the digital-to-analog converter 18 to output voice, and a carrier for modulating voice data encoded by ADPCM from the central processing unit 2 Amplified signal of the signal synthesizing section 22, the signal amplifying section 24 that amplifies the modulated signal of the signal synthesizing section 22 to a level defined by DECT, and the signal amplifying section 24. Propagates in the air and receives high-frequency signals in the air. An antenna 26, a low noise amplifier 28 for receiving low frequency amplification of a high frequency signal from a fixed station received through the antenna 26, and a low noise amplifier 28 An intermediate frequency converter 30 for converting the received high frequency signal into an intermediate frequency, and a demodulator for extracting the original signal transmitted from the intermediate frequency of the intermediate frequency converter 30 and applying it to the central processing unit 2. (32), an input unit (34) for inputting a call to the central processing unit (2), a screen display unit (36) for displaying a longitudinal state by receiving a signal from the central processing unit (2), and a central processing unit ( B) 38 for generating a special sound generated for use of a terminal such as a key input and a ring tone by receiving the signal of 2), and the initial state of the volume and various telephone numbers under the control of the central processing unit 2; Ipyrom (Electrically Erasable Programmable) Read Only Memory; Read only memory (ROM) 42 storing data for the operation of the entire processor by the EEPROM) 40 and the central processing unit 2, and parameters for longitudinal operation by the central processing unit 2; It includes a RAM (Read Access Memory; RAM) 44 to temporarily store the.

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 a light emitting device such as) so that the user can know the current state of the power on / off of the terminal.

Next, the power supply unit 6 is controlled by the central processing unit 2 to supply power for terminal operation, and the microphone 8 converts a voice signal by the user into an electrical analog voice signal, and converts the analog-digital signal. 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-to-digital converter 10 into ADPCM data and applies it to the digital signal processor 14, and the digital signal 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 the ADPCM from the central processing unit 2 and modulates it in 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 the 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 to the central processing unit 2. Is authorized.

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 for the hardware (Hardware) is read from the ROM 42 or EPI rom 40 to initialize each 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 base station receives signals from the wireless "channel 0" to the ninth through ten (100, 102, 104, 106, 108, 110, 112).

Next, the received electric field strengths for all 10 radio channels are examined to determine the connection to the radio base station which emits the strongest radio signal among them, and the criteria of various timings inside the terminal are determined based on the signal sent from the radio base station. (114).

After that, by checking the time slot usage state of the radio base station, it is checked whether there is an empty time slot, 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 whether there is a paging signal from the fixed station, and if there is a paging signal, first accesses a MAC (Madium Access Control) layer to secure a time slot use right of a 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).

Subsequently, due to any one call disconnection situation, network layer disconnection, DLC layer disconnection, and MAC layer disconnection are performed 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 checks 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 does not exceed the set value until the end of the use of another user's time slot. When another user's use of the 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 any 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, the battery voltage is input through a circuit for converting an analog signal into a digital signal to check whether the battery is at an appropriate level. When the battery is below the proper 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's signal level is -83dBm or more, the signal state 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, the radio base station receives signals from the radio "channel 0" to "no. 9" over 10 times (162, 164, 166, 168, 170, 172).

Therefore, the received electric field strengths of all ten radio channels are examined to determine the connection to the wireless base station which emits the strongest wireless signal among them, and the reference of various timings in the terminal is based on the signal sent from the wireless base station. (174,176)

After that, by checking the time slot usage state of the radio base station, it is checked whether there is an empty time slot, and then newly registers (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 the process, and perform various timer processing of the other terminal.

In the case of using the portable terminal according to the conventional technology, there may be restrictions on use when the sales organization of the national scale or when the company should use only for public purposes.

In other words, when receiving only an instruction from the central department, the user of the terminal may not need to transmit.

For example, a portable terminal of a sales representative may be required to have a reception function so that a transmission function is prohibited to restrict the use of the mobile terminal outside the business.

However, in the conventional technology, since the DECT terminal does not have a function to temporarily limit the transmission function, it is difficult to effectively or continuously limit the transmission function of the terminal, making it difficult to efficiently maintain the central control power using the terminal. there is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and provides a method for preventing a call of a terminal that can disable a transmission function of the terminal by transmitting a specific number after the terminal is in a call state. There is this.

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

Referring to FIGS. 3 and 4, FIGS. 3 and 4 are flowcharts illustrating an embodiment of a method for banning a call of a terminal according to the present invention.

Hereinafter, the present invention will be described with reference to the description of FIG.

First, when the connection request is determined in the connection request determination step 134 as shown in FIG. 3 and the call prohibition state is displayed, the call prohibition state is displayed and the battery test step 150 is performed. (136) (200, 202).

Next, after performing the handover execution step 176 as shown in FIG. 4, if there is a call prohibition signal, the call function is stopped, and when there is no call prohibition signal and the call prohibition is released, the call function can be performed and the registration performing step is performed. (116) (210, 212, 214, 216).

That is, the password for prohibition of use can be set as a key input method, and the password for prohibition of use can be changed to a key input method, and the password for prohibition of use can be deleted with a key input method.

In addition, another password for a permission can be set as a key input method, and another password for the permission can be changed as a key input method, and another password for the permission can be deleted as a key input method. Make sure

Thus, a part for monitoring whether a DTMF signal is received during a call, a part for determining whether a DTMF signal corresponding to a password is continuously received, a part for preventing a transmission function when a password is entered, and a call The present invention can be realized in hardware by providing a portion for determining whether DTMF signals corresponding to the inhibit release are continuously received, and a portion for resuming the transmission function when the call inhibition release signal is received.

As described above, the present invention can partially limit the intentional call of the DECT terminal by the user, and the partial restriction can be adjusted by a method such as central control by executing a function such as releasing a call. It is.

Claims (1)

Initializing each hardware and accepting all channels of the base station (100, 102, 104, 106, 108, 110, 112), and checking the electric field strengths of all the accepted channels, respectively, to determine the connection to the wireless base station which emits the strongest channel signal, and from that wireless base station Synchronizing to be a reference for various timings in the terminal based on the transmitted signal (114); checking whether there is an empty time slot by checking the time slot usage state of the base station; then performing a registration procedure (116) If there is a paging signal from the fixed station, access the MAC layer to secure the time slot use rights of the wireless channel, and then proceed to access the DLC layer and the network layer in order to form a call path, and then proceed with the call. Steps 118, 120, 122, 124, 126, and either call cutting phase (128,130,132) of releasing the license of the wireless channel and resuming standby by disconnection of the network layer, disconnection of the DLC layer, and subsequent disconnection of the MAC layer, and the paging signal to a specific subscriber of the terminal user. If a connection request is generated, the existence of an empty time slot is checked to secure the use of the time slot. If there is an empty time slot, a request for use of the time slot is immediately made to the fixed station. If the time slot is not empty, another user If the time delay does not exceed the value set until the use of the time slot ends, wait for another user's use of the time slot, and then attempt to access the MAC layer using that time slot. In step 134, 136, the MAC layer is accessed to secure the time slot usage rights of the wireless channel. Step (138, 140, 142) to proceed to the connection of the DLC layer, the connection of the network layer to form a call path and then proceed with the call, disconnection of the network layer by any one of the call disconnection situation, disconnection of the DLC layer, and then Steps (144, 146, 148) of releasing the license of the wireless channel and returning to the standby state by disconnection of the MAC layer, and after the paging signal and the user's transmission request are not completed or after the steps 132 or 148 are completed, the internal state check of the terminal is performed. Proceeding, generating a battery charge warning signal when the voltage of the battery is below an appropriate level, and checking whether the level of the fixed station is too low to attempt to connect to an adjacent fixed station (150, 152, 154, 156, 158), and the signal level of the fixed station is appropriate. In this case, the signal status of the currently registered station is maintained as it is. If the signal level is not appropriate, proceed with the deregistration process of releasing the state in which all channels are registered with the current fixed station (160), and re-accepting all channel signals of the base station (162, 164, 166, 168, 170, 172), and all channels. Determining a connection to a base station that emits the strongest signal among the field strengths, and synchronizing with reference to the signal transmitted from the base station (174, 176) to be a reference for various timings in the terminal and the time slot usage state of the base station. Investigating whether there is an empty time slot by checking, and then performing a new registration procedure (116). After the battery test step 150 is performed, if the call is not prohibited Performing (200, 202) the MAC access step (136); After performing the handover step 176, if there is a call prohibition signal, the call function is stopped, and when there is no call prohibition signal and the call prohibition is released, the call function can be performed and the registration performing step 116 is performed. The call barring method of the terminal comprising the steps (210,212,214,216).