JPH0466141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a multifunctional telephone device having various service functions such as an information storage function.

[Technical Background of the Invention] Conventionally, as a telephone device, a telephone body equipped with standard functions for making telephone calls is provided with a storage section and an information input means, and the information input means allows various information such as the other party's telephone number and schedule to be entered. There is a multi-function telephone device that stores information in a storage unit. This type of telephone device is very convenient because it allows the user to store any necessary information and use it as appropriate.

However, some of the stored information must not be known to third parties or must be protected from falsification or forgery. Conventionally, the following protection functions have been considered to protect this information. ing.
In other words, the protection function is to register a code number in advance in the telephone device, and before use, the user verifies the code number using the button dial keys and when the code matches, the service function becomes operational.

A key is provided on the telephone device, and service functions can be operated by unlocking the key before use.

Check the recitation number using a magnetic card,
The service function becomes operational only when the password numbers match.

etc.

[Problems with background technology]

However, in devices equipped with such conventional protection functions, those that query the password number using a button dial key are easily decoded because the password number is set by a combination of numbers from 0 to 9. Furthermore, if the number of digits in the recited number is increased to prevent this, it becomes difficult for the user to remember the recited number. Furthermore, the user must operate a protection switch every time he or she leaves his/her seat, and input the code number each time he/she takes a seat, making the operation cumbersome and inconvenient.

The device that uses a key becomes large and is not practical.

If a magnetic card is used, the telephone device must be equipped with a magnetic card reading device, which increases the size of the device, and the magnetic data is easily changed by external magnetic influences, resulting in low reliability.

There were other drawbacks.

[Purpose of the invention]

The present invention is a multifunctional device that can make the service function inoperable in the absence of the user with a simple operation and reliably make it inoperable, and that can realize this with a simple configuration without increasing the size of the device. The purpose of this invention is to provide a portable telephone device.

[Summary of the invention]

In order to achieve the above object, the present invention provides a memory medium that is freely insertable and removable into the main body of a telephone device, a means for generating constantly changing verification information in the main body of the telephone device, and the above memory medium is provided in the main body of the telephone device. The verification information generated by the verification information generating means is written into the storage section of the memory medium and the storage section of the device main body at any timing during insertion each time the device is inserted into the main body, and the verification information The function selection control means sets all or part of the service functions of the telephone device to an inoperable state when the memory medium is not inserted, and also sets the service functions of the telephone device to an inoperable state when the memory medium is not inserted. The verification information written in the storage section when the phone is inserted and the verification information written in the telephone device itself are compared and verified by the verification means, and the above operation becomes impossible only when both pieces of information match. This is to restore the functions that were set to operational status.

[Embodiments of the invention]

FIG. 1 shows the configuration of a multifunctional telephone device according to an embodiment of the present invention. This device consists of a telephone device body A and a card-shaped memory medium (hereinafter referred to as memory (referred to as a card) B.

Memory card B is generally called a RAM card, and for example, as shown in FIG.
and a power supply circuit 35 whose power source is a primary battery 36 that retains the stored contents of the data RAM 33. Note that 37 is a connector for connecting the address bus 38, data bus 39, and selection signal line 40 to the telephone device body A, respectively.

The telephone device main body A includes a telephone circuit 10 for making telephone calls, a push-button dial 11 for dialing and inputting various information such as the other party's telephone number, schedule, and appointment time, and a circuit for instructing the operation of various service functions. Function key 12 for
, a handwritten information input unit 13 for inputting figures and characters by hand, and a timer 1 for measuring time.
4 and a control circuit 15. This control circuit 15 is composed of a microprocessor (CPU), and this CPU 15 has a ROM 16 that stores programs via an address bus 21 and a data bus 22, a ROM 17 that stores control information, and a ROM 17 that stores control information.
A RAM 18 for storing various information on service functions and input/output circuits (I/O) 19 and 20 are connected. Each of these circuits 16 to 20 is
The chip selector 23 selectively operates according to instructions from the CPU 15. Also, C is a telephone line, 2
Reference numeral 4 indicates a display made of a liquid crystal or the like, and reference numeral 25 indicates a detector for detecting whether or not the memory card B is inserted.Display data is supplied to the display 24 through the input/output circuit 19, and the detection The detection signal of the device 25 is introduced to the CPU 15 via the input/output circuit 20. Note that 26 is a connector for connecting the address bus 21, data bus 22, and selection signal line to the memory card B.

Here, the CPU 15 has control functions such as storing information inputted by the pushbutton dial 11, function key 12, and handwritten information input section 13 in the RAM 18, reading it out as appropriate, and displaying it on the display 24. , has various control functions as shown in FIG. In other words, its function is
A card insertion determination means 15a determines whether or not the memory card B is inserted based on the detection signal of the detector 25, and a RAM 33 of the memory card B and a RAM of the telephone device body B before removing the memory card B.
a time information storage control means 15b for writing the time information of the timer 14 into each RAM 18, a collation means 15c for comparing and collating the time information of each of the RAMs 33 and 18 when the memory card B is inserted, and before the memory card B is removed. The information roll control means 15d stores the information stored in the RAM 18 in the RAM 33 of the memory card C, and the service function to be operated is selected depending on whether the memory card B is inserted or not and the verification result of the verification means 15c. function selection control means 15e.

Next, the operation of the apparatus configured as described above will be explained with reference to FIG. First, if memory card B is not inserted, the phone
The CPU 15 determines in step 4a of FIG. 4 that memory card B is not inserted, and proceeds to step 4m.
In step 4m, the service function is set to be inoperable. In other words, the setting is made so that even if the function key 12 or the like is operated, the information stored in the RAM 18 is not read out and displayed on the display 24. However, in this state, the telephone device main body A can perform only standard functional operations related to telephone calls.

Now, in this state, for example, when the user returns home and inserts the memory card B into the telephone device main body A, and this is detected by the detector 25, the CPU 15 moves from step 4a to step 4b. The time information stored as verification information is read out from the RAM 33 of the memory card B, and the time information stored in the same manner is read out from the RAM 18 in step 4c. Then, these time information are compared and verified in step 4d, and when the two pieces of information match, it is determined that the user is an authorized user, and the process moves to step 4e.
Read out the information saved in RAM33
Then, in step 4f, the inoperable state of the service function is canceled and the function is set to be usable. The CPU 15 then proceeds to step 4g, where it performs predetermined control operations related to each service function in accordance with the user's instructions. While executing this control operation, it is monitored in step 4h whether or not a request to remove the memory card B has occurred.

In this state, when the user leaves the seat and operates the memory card holder to request the memory card detector 25 to remove the memory card B,
Before memory card B is removed, the CPU 15
The process moves from step 4h to step 4i. In step 4i, the service function information in the RAM 18 is first read out, output to the memory card B, and stored in the RAM 33 by the CPU 31 of the memory card B. In other words, information that requires confidentiality is saved to memory card B. When the saving of this information is completed, the CPU 15 then saves the RAM in step 4j.
18, then move to step 4k, where the time information at this point is input from the timer 14, and this time information is stored in the memory card B.
While storing it in RAM33, step 4l
The same time information is stored in RAM 18 in the telephone device body A.
, and return to step 4a. That is, time information as verification information is stored in the memory card B and the telephone device main body A, respectively, and then the operation shifts to a call-only operation without operating the service function.

In this way, with this embodiment, the user can protect each piece of information used in the service function with the simple operation of inserting and removing memory card B, and also uses time information as verification information. This information is transferred to memory card B when memory card B is removed.
By writing in the RAM 33 of
It has the advantage of being compact and inexpensive with a simple configuration. Furthermore, in this embodiment, when the memory card B is removed, the information in the RAM 18 of the telephone device body A is saved to the RAM 33 of the memory card B, and the information in the RAM 18 of the telephone device body A is erased. It is possible to reliably prevent fraudulent attempts to obtain information in the RAM 18 while the user is absent, as well as falsification or forgery of stored information.

Note that the present invention is not limited to the above embodiments. For example, only a portion of all functions may be rendered inoperable when memory card B is not inserted. In addition to time information, the verification information may also be random function information generated by a random function generator, and furthermore, as a memory medium,
In addition to the RAM card, a so-called IC card equipped with a CPU may also be used. In addition, the types of service functions, the configuration of the telephone device main body, the CPU control procedure, control contents, etc. can be modified in various ways without departing from the gist of the present invention.

〔Effect of the invention〕

As described in detail above, according to the present invention, a memory card that can be inserted into and removed from a telephone device main body is provided, a means for generating constantly changing verification information is provided in the telephone device main body, and the memory card is inserted into the telephone device main body. The verification information generated by the verification information generating means is written into the storage section of the memory card and the storage section of the device main body, respectively, at any timing during insertion each time the card is inserted into the main body, and the verification information The function selection control means sets all or part of the service functions of the telephone device to an inoperable state when the memory card is not inserted, and also sets the service functions of the telephone device to an inoperable state when the memory card is not inserted. The verification information written in the storage section when the phone is inserted and the verification information written in the telephone device itself are compared and verified by the verification means, and the above operation becomes impossible only when both pieces of information match. By restoring the functions that were previously set to operational status, it is possible to easily and reliably disable the service functions in the user's absence, and also to It is possible to provide a multifunctional telephone device that can be realized with a simple configuration without increasing the size of the device.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram showing the configuration of a multifunctional telephone device according to an embodiment of the present invention, FIG. 2 is a circuit block diagram showing the configuration of a memory card B of the same device, and FIG. 3 is a circuit block diagram showing the configuration of the telephone device body A. FIG. 4 is a block diagram showing the functional configuration of the CPU, and FIG. 4 is a flowchart showing the control procedure of the CPU. A...Telephone device body, B...Memory card, C
...Telephone line, 10...Telephone circuit, 11...Push button dial, 12...Function key,
13...Handwritten information input section, 14...Timer, 15
... Control circuit (CPU) of the main body of the telephone device, 15a...
...Card insertion determination means, 15b...Time information storage control means, 15c...Verification means, 15d...Information transfer control means, 15e...Function selection control means, 1
6, 17...ROM, 18,33...RAM, 1
9, 20... Input/output circuit (I/O), 21... Address bus, 22... Data bus, 23... Chip selector, 24... Display, 25... Detector,
26...Connector, 36...Primary battery, 37...
connector.

Claims (1)

[Scope of Claims] 1. A multifunctional telephone device equipped with service functions in addition to standard functions for telephone calls, comprising a telephone device main body and a memory medium that is freely insertable and removable from the telephone device main body, The main body of the telephone device includes a verification information generation means that generates verification information that constantly changes, and a verification information generating means that generates verification information generated by the verification information generation means at an arbitrary timing during insertion each time the memory medium is inserted. information storage control means for writing into a storage section in the memory medium and a storage section in the telephone device main body, respectively; and a telephone device that writes verification information stored in the storage section of the memory medium when the memory medium is inserted. A verification means that compares and verifies the verification information stored in the storage section of the main body, and sets all or part of the service functions to an inoperable state while the memory medium is not inserted, and and function selection control means for returning the service function set to the inoperable state to the operable state only when a match of each collation information is detected by the collation means during insertion. A multi-functional telephone device with special features. 2 In addition to writing verification information, the information storage control means stores predetermined information stored in the telephone device main body in a storage section within the memory medium when a request to remove the memory medium is made, and stores the same in the telephone device main body. The multifunctional telephone device according to claim 1, which erases information. 3. The multifunctional telephone device according to claim 1 or 2, wherein the verification information generating means comprises a timer that generates time information. 4. The multifunctional telephone device according to claim 1 or 2, wherein the verification information generating means comprises a random number generator.