JP2995337B2 - Selective call receiver and mobile radio communication device - Google Patents

Description

The present invention relates to a selective call receiver and a mobile radio communication device having a function of receiving and displaying message information.

(Prior Art) Conventionally, for example, the following is known as a selective call receiver. FIG. 4 is a circuit block diagram showing the configuration.

In FIG. 1, a selective call signal sent from a base station (not shown) is received by a radio circuit 2 via an antenna 1, demodulated by a demodulation circuit 3, and introduced into a control circuit 4.
In the matching circuit 4, the individual number code (ID code) included in the received selective call signal is compared with the ID code of the own device stored in the individual number code memory (ID-ROM) 5 in advance. Is done. If the two codes match, it is determined that a call to the own device has occurred, and the control circuit 4 supplies a sound signal to the drive circuit 6. For this reason,
A sound is generated from the speaker 7, and the sound informs the owner of the occurrence of the call. The sound is stopped when the holder presses the stop switch 11 or when a predetermined time has elapsed.

If a message code is included in the reception selective calling signal, the control circuit 4 corrects and decodes the message code. Then, the decoded message code is supplied to the display drive circuit 8,
As a result, a message corresponding to the message code is displayed on the display 9. The received message code is sent from the control circuit 4 to the message memory (M-RAM) 10.
Is transferred and stored. The message code stored in the message memory 10 is displayed when the display switch 12 is operated after the display of the message is completed.
And is displayed again on the display 9.

By the way, recently, when a message is transmitted using a selective call receiver of this type, it has been considered to transmit the message information in a shortened manner. For example, abbreviated information (for example, a small number of digits) corresponding to the message information is predetermined between the caller and the holder of the selective call receiver, and the caller substitutes the corresponding abbreviated information instead of the message information. Send out. On the other hand, when the ID code included in the received selective calling signal matches the ID code of the own device, the selective calling receiver causes the display 9 to display the shortened information included in the received selective calling signal as it is. In this way, the amount of transmission information can be reduced as compared with the case where the message information is transmitted as it is, and the line efficiency can be improved.

(Problems to be solved by the invention) However, in such a conventional selective call receiver,
Since the abbreviated information is displayed as it is, the holder may forget the message information corresponding to the abbreviated information, or may erroneously recognize the message information of another abbreviated information, which is difficult to use for the owner.

Therefore, the present invention focuses on the above circumstances, reduces the amount of message information transmitted, improves line efficiency, and can always recognize transmitted message information reliably and accurately. It is an object of the present invention to provide a selective call receiver and a mobile wireless communication device that can be shared by a plurality of communication carriers and can reduce the cost of the receiver body due to mass production effects.

[Means for Solving the Problems] In order to achieve the above object, a selective call receiver according to the present invention provides a message for converting shortened message information into regular message information corresponding to this information. A message conversion memory in which conversion information is stored in advance, and a message conversion unit are provided. When the message information included in the received selective call signal is the shortened message information, the message converting means converts the shortened message information into a regular message according to the message conversion information stored in the message conversion memory. This is converted into information and displayed.

Further, the selective call receiver of the present invention is characterized in that the message conversion memory is constituted by an integrated circuit module which is detachably attached to the selective call receiver main body by a connector mechanism.

Further, the selective call receiver of the present invention is required to determine whether or not the selective call signal is addressed to itself, in addition to the area for storing the message conversion information in the message conversion memory. It is also characterized in that a ROM area for storing individual number information and information for designating a reception radio frequency is provided.

Further, in order to achieve the above object, the wireless mobile communication device of the present invention stores, in advance, message conversion information for converting the shortened message information into regular message information corresponding to this information. Message conversion memory and message conversion means. When the message information included in the received calling signal is the shortened message information, the message converting means converts the shortened message information into regular message information in accordance with the message conversion information stored in the message conversion memory. Is converted and displayed.

Further, the wireless mobile communication device of the present invention is characterized in that the message conversion memory is constituted by an integrated circuit module that is detachably attached to the mobile wireless communication device main body by a connector mechanism.

Further, the wireless mobile communication device of the present invention, in the message conversion memory, in addition to the area for storing the message conversion information, or provided a RAM area for storing the message information included in the received call signal, Alternatively, a ROM area for storing individual number information necessary for determining whether or not the call signal is addressed to the own device and information for specifying a reception radio frequency is provided.

(Operation) As a result, according to the present invention, the shortened message information is transmitted to the selective call receiver and the mobile radio communication device, so that the message transmission amount is reduced and the line efficiency is improved. Moreover, according to the present invention, when the shortened message information is received and displayed by the selective call receiver or the mobile radio communication device, it is converted into the corresponding regular message information and displayed. For this reason, the holder can always recognize the legitimate message information accurately without errors, without having to store the correspondence between the shortened message information and the legitimate message information.

If an integrated module such as an IC card is used as a message conversion memory, new setting and rewriting of message conversion information can be performed relatively easily, and handling can be simplified.

Further, if the message conversion memory is provided with a ROM area for storing the individual number information and the designation information of the reception radio frequency, the memory of the selective call receiver can be consolidated, thereby enabling selective call reception. It is possible to reduce the size of the device and the mobile radio communication device. Also,
By further storing the radio frequency designation information, for example, a receiver for another model or another company using a different radio frequency band can be used as it is simply by replacing the message conversion memory. That is, the receiver main body can be shared among a plurality of communication carriers and the like, and a significant cost reduction of the receiver main body can be expected due to mass production effects.

(Embodiment) FIG. 1 is a block diagram showing a functional configuration of a selective call receiver according to the present invention. 4, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description is omitted.

The selective calling receiver of this embodiment uses an IC card as a memory, and this IC card 20 is detachably connected to a control circuit 40 by a connector 25. IC card 20
It has a ROM area and a RAM area. The ROM area is provided with an area 21 for storing an individual number code (ID code) assigned in advance to the selective call receiver and an area 22 for storing reception radio frequency designation information. ing. In the RAM area, an area 23 for storing message conversion information and an area 24 for storing a received message code are provided. The message conversion information is used, for example, when converting a shortened message code consisting of a one-digit number into a legitimate message code corresponding to the shortened message code, and stores the legitimate message code in association with the shortened message code. It consists of a data table. Reference numeral 26 denotes an external terminal for connecting the IC card 20 to, for example, a personal computer when writing the message conversion information and the like into the IC card 20.

On the other hand, the control circuit 40 has, for example, a microcomputer as a main control unit, and has a reception ID as a control function.
Collation means 41 for collating the code with its own ID code
A notification control means 42 for outputting a sound signal to generate a sound from the speaker 7 when the matching of the two ID codes is detected by the matching means 41; and a message display control means 43.
And a message conversion means 44.

The message display control means 43 determines whether the received message code is a short-circuit code when a call to the own device occurs and when the display switch 12 is operated. On the other hand, if the short-circuit code is used, the message is converted into a proper message code by a message conversion means 44 described later and then displayed on the display 9.

The message conversion means is the message display control means.
In the process of control by 43, if the received message code is a short-circuit code, the short-circuit code is converted into a corresponding regular message code according to the message conversion information stored in the IC card 20.

Next, the operation of the selective call receiver configured as described above will be described.

The ID code and the designation information of the reception radio frequency are written in the IC card 20 in advance by the service company.

Prior to use, the holder writes the message conversion information arbitrarily set in the message conversion information storage area 23 of the IC card 20 using, for example, a personal computer.
Then, the IC card 20 on which the writing has been completed is connected to the connector.
25 inserts into the control circuit 40.

When a power switch (not shown) is turned on in this state,
First, the control circuit 40 for the frequency synthesizer of the radio circuit 2
, The receiving radio frequency is set, and thereafter the selective calling receiver starts receiving operation of the selective calling signal at this radio frequency.
Note that the setting of the reception radio frequency for the frequency synthesizer is performed based on the reception radio frequency designation information stored in the IC card 20. Next, after establishing synchronization with the selective calling signal, the control circuit 40 starts battery saving in which the radio circuit 2 and the demodulation circuit 3 are in the receiving operation state only during the period when the control circuit 40 should receive the signal. Then, as shown in FIG. 2 (a), in steps 2a and 2b, monitoring whether or not the reception period of the own device has been reached and monitoring whether or not the display switch 12 has been operated are repeatedly performed. That is, control for waiting for a call is started.

By the way, in this state, when the reception period of the own device is reached, the control circuit
Step 40 proceeds to step 2c, where the signal is received from the demodulation circuit 3.
Capture the ID code and the received message code. And
In step 2d, the own ID code is read from the IC card 20, and
In step 2e, the received ID code is compared with its own ID code. If the two codes do not match as a result of the collation, it is determined that the call is not to the own device, and the process returns to the call waiting state. On the other hand, if the ID codes match, it is determined that a call to the own device has occurred, and the process proceeds to step 2f, where a sound signal is first generated and supplied to the drive circuit 6. For this reason, a sound is generated from the speaker 7, and the occurrence of the call is notified to the holder by the sound.

The control circuit 40 stores the received message code in the message storage area 24 of the IC card in step 2g.
Then, in step 2h, it is determined whether or not the received message code is a shortened code. This determination is made by determining whether the received message code is composed of a one-digit number. As a result of this determination, if the received message code is a shortened code, the control circuit 40 reads the message code corresponding to the shortened code from the IC card 20 in step 2i, and reads this message code in step 2j.
To decrypt. Then, the decrypted message information is displayed on the display 9 in step 2k. Therefore, the display 9 displays a regular message corresponding to the shortened code instead of the received shortened code.
For this reason, even if the holder forgets the message corresponding to the abbreviation code, it can surely recognize the content of the received message.

As a result of the above determination, if the received message code is not a shortened code or the corresponding message code is not stored in the IC card 20 even if it is a shortened code, the received message code is displayed on the display 9 as it is. Display.

When the generation of the sound is started as described above and the display of the received message information is further performed, the control circuit 40 operates the stop switch 11 in steps 21 and 2m as shown in FIG. It repeatedly monitors whether the first time t1 has elapsed since the start of the call notification. In this state, if the owner presses the stop switch 11 or the time t1 has elapsed without the stop switch 11 being pressed, the control circuit 40 proceeds to step 2n and stops the generation of the sound. In steps 2o and 2p, the operation of the stop switch 11 and the monitoring of whether or not the second time t2 has elapsed since the start of the call notification are repeatedly monitored. Then, in this state, if the owner presses the stop switch 11 or the time t2 elapses without the stop switch 11 being pressed,
The control circuit 40 proceeds to step 2q, in which the display operation of the message is stopped, and the control circuit 40 returns to the call waiting state.

On the other hand, it is assumed that, in the call waiting state, the holder presses the display switch 12 in order to confirm the previously received message again. Then, the control circuit 40 executes display control of the message. That is, as shown in FIG. 3, first, the received message code is read from the IC card 20 in step 3a. As the message code to be read out at this time, for example, the one with the latest reception timing is selected. Next, the control circuit 40 determines whether or not the received message code is a shortened code in step 3b, and if it is a shortened code, reads a message code corresponding to the shortened code from the IC card 20 in step 3c. The message code is decrypted in step 3d. Then, the decrypted message information is displayed on the display 9 in step 3e. Therefore, also in this case, the display 9 displays a regular message corresponding to the shortened code instead of the shortened code.

When the message is displayed, the control circuit
40 monitors the re-operation of the display switch 12 in step 3f, and operates the stop switch 11 in steps 3g and 3h, respectively, and performs a predetermined time t2 after starting the display.
It is repeatedly determined whether or not has elapsed. In this state, if the owner presses the stop switch 11 or the time t2 elapses without the stop switch 11 being pressed, the control circuit
The process proceeds to step 3j, where the display is stopped, and the process returns to the call waiting state.

It is also assumed that the display switch 12 has been pressed again. Then, in step 3i, the control circuit 40 selects the address where the received message with the next newest reception timing is stored, and then returns to step 3a, where the corresponding received message is read. Then, as described above, it is determined whether or not the received message code is an abbreviated code. If the code is abbreviated, the corresponding legitimate message is read from the IC card 20 and displayed on the display 9 in step 3c. .

Similarly, the same control is repeated each time the display switch 12 is pressed once.

As described above, according to the present embodiment, the following effects can be obtained. That is, a normal message code corresponding to the shortened code is stored in the IC card 20 in advance, and when the received message code is the shortened code, the corresponding message code is read from the IC card 20 and displayed on the display 9. Since the message is displayed, the holder can always reliably and erroneously recognize the content of the received message even if he does not remember the message corresponding to the abbreviation code.

Further, since the IC card 20 is used as a memory for storing the message conversion information, the holder can add or change the message conversion information as needed.

Further, in the present embodiment, not only the message conversion information but also the received message code is stored in the IC card 20, and the ID code and the specified information of the received radio frequency are also stored, so that the selective calling receiver is used. In such a case, all necessary information can be written in the ID memory 20, and as a result, the selective call receiver main body can be shared with any service company in the world, thereby enabling the selective call receiver to be used. It can be provided at low cost. The effect can be further enhanced by using a common IC card.

The present invention is not limited to the above embodiment.
For example, in the above embodiment, the case where an IC card is used has been described, but another IC module such as a memory pack may be used.

Further, in the above embodiment, a ROM or a RAM is used as the memory.
However, an E ² PROM may be used.

In addition to the numbers, "A", "B", "C"
.. Or the like, or a combination thereof.

Furthermore, if a mode is provided for prohibiting the conversion of the abbreviated code into the corresponding message code, and the specification can be made by the holder by a specific operation of the switch, the abbreviated code is displayed on the display as it is. It becomes possible. By doing so, the same effect as in the case of displaying the received message in an encrypted manner can be obtained. this is,
This is very useful when you do not want the contents of the received message to be known to a third party.

In addition, the control procedure and control contents of the message display control means, the configuration of the message conversion means, and the like can be variously modified without departing from the gist of the present invention.

[Effects of the Invention] As described in detail above, the present invention comprises an integrated circuit module detachable from a selective call receiver main body by a connector mechanism, and converts shortened message information into regular message information corresponding to this information. A message conversion memory in which message conversion information for storing is stored in advance, and a message conversion unit is provided, and when the message information included in the received selective call signal is the shortened message information, the message conversion unit This shortened message information is converted into regular message information in accordance with the message conversion information stored in the message conversion memory and displayed.

Further, the present invention provides, in addition to an area for storing the message conversion information in the message conversion memory, individual number information for determining whether or not the selective calling signal is addressed to the own device, and a reception radio signal. An area in which information for specifying a frequency is stored is provided.

Therefore, according to the present invention, the transmission amount of message information is reduced and the line efficiency is increased, and furthermore, the transmitted message information can always be recognized reliably and accurately. It is possible to provide a selective call receiver and a mobile wireless communication device that can be shared among operators and the like and can reduce the cost of the receiver body due to mass production effects.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of a selective call receiver according to an embodiment of the present invention. FIGS. 2 and 3 are flowcharts showing control procedures and control contents of a control circuit of the receiver. FIG. 2 is a circuit block diagram showing an example of a configuration of a conventional selective call receiver. 1 ... antenna, 2 ... radio circuit, 3 ... demodulation circuit, 6
…… Drive circuit, 7 …… Speaker, 8 …… Display drive circuit,
9 ... Display (LCD), 11 ... Stop switch, 12 ... Display switch, 20 ... IC card, 21 ... ID code storage area, 22 ... Received radio frequency designation information storage area, 23 ... …
Storage area for message conversion information, 24 storage area for received message code, 25, 26 connector, 40 control circuit, 41 verification means, 42 notification control means, 43 message display control means , 44 …… Message conversion means.

Claims (2)

(57) [Claims] 1. A message display means for receiving a selective call signal transmitted from a base station, and displaying the message information when the selective call signal is addressed to itself and includes message information. In the selective call receiver, the selective call receiver comprises an integrated circuit module detachable from the main body of the selective call receiver by a connector mechanism, and the message conversion information for converting the shortened message information into regular message information corresponding to this information is previously provided. When the message information included in the received selective call signal is abbreviated message information, the abbreviated message information is properly stored in accordance with the message conversion information stored in the message conversion memory. To display the message information on the message display means. Message conversion memory, and the message conversion memory includes an area for storing the message conversion information and an individual memory for determining whether or not the selective calling signal is addressed to itself. A selective call receiver having an area for storing number information and information for designating a reception radio frequency. 2. Receiving a paging signal transmitted from a base station,
In the mobile radio communication device provided with a message display means for displaying the message information when the call signal is addressed to the own device and includes the message information, the mobile radio communication device is attached to and detached from the main body of the selective call receiver by a connector mechanism. A message conversion memory in which message conversion information for converting the shortened message information into regular message information corresponding to the shortened message information is stored in advance, and a message included in the received call signal. Message converting means for converting the shortened message information into regular message information according to the message conversion information stored in the message conversion memory and displaying the message information on the message display means when the information is the shortened message information. And the message conversion memory comprises: In addition to the area for storing the message conversion information, the area for storing the individual number information for determining whether or not the call signal is addressed to the own device and the information for specifying the reception radio frequency are stored. A mobile radio communication device comprising: