JPS5829017B2 - mobile phone - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to mobile telephones such as car phones and mobile phones, and in particular, when there are multiple users, the number of users is limited to a predetermined call area. That is.

FIG. 1 shows an example of a call method conventionally used in a car telephone.

In Figure 1, 1 is a car battery, 2 is a car key switch, 3 is a car phone, 4 is a power line connecting the output of the battery and the input of the key switch, and 5 is a power line connecting the output of the key switch and the power input of the car phone. This is the power line to connect.

In reality, the output of the battery and the output of the key switch are respectively wired to electrical devices in the automobile, but these are omitted in FIG. 1 because they are not directly relevant to this explanation.

Power for the car phone 3 is supplied from the car's battery 1 through the car's key switch 2.

By turning the key switch into the connected state, the car telephone 3 becomes operational.

Therefore, anyone who has the car key can use the car phone.

However, in general, when there are multiple users of a car phone, for example when the owner of the car phone and the driver are different, it may not be desirable to provide the same service to each user.

For example, a driver may wish to limit outgoing calls to local calls only.

Since conventional car telephones unconditionally provide the same service to anyone with a key, it has been impossible to provide individual services to each user.

This invention attempts to eliminate the drawbacks of such conventional methods, and aims to provide a unique service to each user by decoding the user's unique number that is set before making a call. That is.

This will be explained in detail below with reference to the drawings. FIG. 2 shows a schematic configuration of a car phone or a mobile phone in which the present invention is implemented, in which a duplexer 7 for performing transmission and reception with one antenna is connected to an antenna 6 for transmitting and receiving a wireless line. This duplexer 7 includes a receiving section 8 that converts a radio frequency signal sent from a base station via a wireless line into a low frequency signal, and a synthesizer section that generates a channel frequency of the radio line and converts the low frequency signal into a radio frequency signal. A transmitter 9 is connected to the base station and transmits a signal to the base station using a wireless line.

A receiving section includes a synthesizer section 10 that generates a signal necessary for converting a radio frequency signal into a low frequency signal and a signal necessary for converting a low frequency signal into a radio frequency signal according to the channel of the radio line. 8 and a transmitter 9.

Control unit 11 that controls the overall operation. An operation section 12 including a dial and a handset 13 are provided.

The control unit 11 specifies the channel number of the wireless line to be used to the synthesizer 10, and the synthesizer 10 sends a signal of the frequency necessary to operate at the frequency of the specified wireless line to the receiving unit 8 and the transmitting unit 9. supply to.

The receiving section 8 demodulates the audio signals and other signals sent from the base station through the antenna 6 and the duplexer 7 on this wireless line, and sends them to the control section 11, and some of the signals are sent to the control section 11.
1 to the operating unit 12 and handset 13.

The transmitting section 9 converts voice signals and other signals from the handset 13, the operating section 12, and the control section 11 into radio line signals, and transmits them to the base station through the duplexer 7 and the antenna 6.

FIG. 3 shows portions of the control section 11 and operation section 12 in FIG. 2 that are related to this invention.

In FIG. 3, the operation unit 12 includes a dial 14 for inputting a dial number and a unique number (the unique number is assumed to be a two-digit decimal number), and a switch 15 for instructing the control unit 11 to input the unique number. It is provided.

The control unit 11 includes a keyboard reading circuit 16 that converts the signal from the dial 14 into a predetermined code, an AND gate 17,
2-digit decimal memory circuit 1 that stores the input unique number
8. Fixed memories 19 to 21 each having two decimal digits for storing a plurality of unique numbers assigned to this telephone set, and determining whether the signals from the storage circuit 1B and the signals from the fixed memories 19 to 21 match or do not match, respectively. Digital comparators 22 to 24 are provided, flip-flops 25 to 27 are used to store the outputs of the comparators 22 to 24, and a central processing circuit 28 comprising, for example, a microcomputer is provided.

The central processing circuit 28 resets the memory circuit 18 and the flip-flops 25 to 27.

The operation will be explained below.

First, prior to inputting the unique number, the switch 15 is operated to set its output to "1" and the AND gate 17 is opened.

When numbers are input from the dial 14, they are converted into a predetermined code by the keyboard reading circuit 16 and stored in the storage circuit 18.

The storage circuit 18 stores a two-digit number (corresponding to the number of digits of the unique number), and the output thereof is compared with the contents of the fixed memories 19-21 in comparators 22-24.

If the dialed unique number matches the contents of the fixed number EIJ 19, the flip-flop 25 is set and the central processing circuit 28 is informed that there is a match.

When this transmission is completed, the central processing circuit 28
Reset.

Based on the states of flip-flops 25 to 27, central processing circuit 28 limits the area that can be dialed in the call that follows this unique number input operation.

This is processed by a microcomputer program, and the following can be done, for example, as a way of limiting this.

Now, the outputs of flip-flops 25 to 27 are each Q2
Expressed as 5~Q2□, if Q25 = 1, the call will be made to all regions, if Q250 is Q26 = 1, the call will be made only to the Kanto region, and if Q25 = Q26 = 0, then Q2□-1
Then, calls will only be allowed within the Tokyo area.

This is processed by software as described above, but if only the relevant parts are shown in a flowchart, the result will be as shown in FIG.

That is, in step S1, it is constantly checked whether the number of the other party has been dialed, and when it is detected that the number has been dialed, it is checked in step S2 whether the number is within the Tokyo area.

If the number is within the Tokyo area, it is checked in step S3 whether it is Q2□-1, and if Q27 = 1, step S3 is performed.
At step 4, the process moves on to sending the number to the base station and making a call.

If it is detected in step S2 that the dialed number is not a number in the Tokyo area, it is checked in step S5 whether the number is a number in the Kanto region, and if it is a number in the Kanto region, it is checked in step S5 whether Q26=1. Checked, Q2
If 6=1, the process moves to step S4.

If the number dialed in step S6 is not from the Kanto region, it is checked in step S7 whether Q25=1, and if Q25-1, the process moves to step S4.

If Q2□ is not 1 in step S3, step S6
If Q26 is not 1 in step S6, the process moves to step S7, and if Q25 is not 1 in step S7, the process returns to step S1.

In this way, the user of the telephone controls the switch 15 so that the user enters a unique number before dialing and makes an outgoing call with a party in a region that is differentiated according to the unique number. becomes possible.

If a person does not know the unique number, even if he or she dials the number, the call will not be processed and the call cannot be made.

To reset flip-flops 25 to 27, use dial 1.
It is clear that software can be used to perform the method when a predetermined number is input from 4 or when the call exceeds a predetermined time or number of calls.

If the reset is performed with one call, the user can always limit the user to only those who know the unique number, and furthermore, the services provided can be limited to those assigned to the unique number.

As explained above, according to the present invention, the unique number known only to those authorized to use it is checked against the contents of the fixed memory prior to use, thereby preventing third parties from using the unique number. By associating separate services for each user, it becomes possible to provide separate services to a large number of users.

[Brief explanation of the drawing]

Fig. 1 is a block diagram for explaining a conventional car phone, Fig. 2 is a block diagram showing a schematic configuration of a telephone to which the present invention is applied, and Fig. 3 shows main parts of an embodiment of the present invention. The block diagram and FIG. 4 are flowcharts illustrating processing operations for dial input in the central processing circuit. 6... Antenna, 7... Shared device, 8.
... Receiving section, 9... Transmitting section, 10...
...Synthesizer section, 11...Control section, 12.
......Operation unit, 13...Telephone receiver, 14.
...Dial, 15...Switch, 16
...Keyboard reading circuit, 17...And gate, 18...Memory circuit, 19-21.
...Fixed memory, 22-24...Comparator, 25-27...Flip-flop, 2
8...Central processing circuit.

Claims (1)

[Claims] 1. A fixed memory in which a plurality of unique numbers are stored, a unique number storage circuit that can store unique numbers by dialing, and a unique number input into the unique number storage circuit and each unique number in the fixed memory. A mobile telephone comprising means for comparing the respective numbers, and means for enabling a mobile side to make a call to a call area pre-corresponding to the unique number for which a match is detected by the comparison.