JP2953998B2 - Radio selective call receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective call receiver, and more particularly, to a radio selective call receiver having a display control function of a received message.

[0001]

2. Description of the Related Art Conventionally, when a caller (sender) sends a message to a destination, the message is stored in a radio selective calling receiver of the other party, and the user (owner) of the radio selective calling receiver is stored. ) Can read out the stored message and display it on the display unit.

[0002]

However, in this type of radio selective calling receiver, a person other than the user can easily read and view the message. Therefore,
Others can easily see messages that the caller does not want to show to anyone but the owner of the radio selective calling receiver.

An object of the present invention is to solve the above-mentioned problems,
Providing a radio paging receiver in which callers can send messages that they do not want to be seen by anyone other than the owner of the radio paging receiver, and only designated persons can see the received messages. It is in.

[0004]

In order to achieve the above-mentioned object, a radio selective call receiver according to the present invention includes a receiving means for receiving a radio selective call signal from a sender, and a radio selective call signal included in the radio selective call signal. Storage means for storing a message to be displayed, first determination means for determining whether or not encryption information for inhibiting display of the message is added to the radio selective calling signal, display means for displaying the message, have a second determination means for determining whether to display the message encryption information is added, the second determination means
Means for inputting decryption information, said decryption information and said encryption
Comparing means for comparing the information with the signal information.
If it is determined that the
Displaying a message .

[0005] Preferably, the storage means comprises a first storage unit for storing a message to which the encryption information is added, and a second storage unit for storing a message to which the encryption information is not added.

[0006]

[0007]

[0008] By adopting the above-described configuration, the radio selective call receiver according to the present invention does not want to be seen by anyone other than the receiver by transmitting the message by adding the predetermined encryption to the message signal. Can send messages.

[0009] In addition, the receiver can easily display a message that he or she does not want to show to others by inputting decryption information (which may match the encryption) compatible with the encryption.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a radio selective call receiver according to an embodiment of the present invention.

The radio selective calling receiver includes an antenna 1, a radio unit 2, a decoder 3, a memory control unit 4, a read only memory (ROM) 5, a RAM 6, a cipher message memory 7,
Display control unit 8, display unit (display) 9, switch 1
0, an encryption information input unit 11 and an encryption comparison unit 12.

First, the message reception and storage operation of the radio selective calling receiver will be briefly described.

The radio selective calling signal received via antenna 1 is demodulated in radio section 2 and input to decoder 3. The decoder 3 converts the call number (ID) included in the demodulated signal from the radio unit 1 into a ROM via the memory control unit 4.
5. Compare with your own calling number supplied from 5. In this comparison, if they match, a message signal following the ID is supplied from the decoder 3 to the memory control unit 4. On the other hand, if they do not match, no signal after the ID is received.

When the cryptographic information is added to the message signal, the memory control unit 4 stores the message signal in the cryptographic message memory 7 and the message signal without the cryptographic information in the RAM 6.

Next, the operation of displaying the stored message will be described.

The display controller 8 sequentially displays the messages stored in the RAM 6 on the display 9 via the memory controller 4 by operating the message reading switch 10 by the user of the radio selective calling receiver. Since the message stored in the RAM 6 is a message that can be viewed by anyone, it is displayed only by operating the switch.

On the other hand, decryption information is input following the switch operation, and if the decryption information matches the encryption information, the message stored in the encryption message memory 7 is displayed on the display unit 9.

As the input of the decoding information, for example, alphabets, numerals, and the like are displayed on the display unit, and selection and determination may be made with a scroll key or the like. In this way,
When the decryption information is input from the decryption information input unit 11, the decryption information is compared with the encryption information added to the received message signal by the encryption comparison unit 12. This decryption information may match the encryption information or may have some relationship.

As a result of the comparison, when the decryption information matches the encryption information, the display control unit 8 reads the designated message signal from the encryption message memory 7 via the memory control unit 4 and displays it on the display unit 9.

FIGS. 2A to 2D show signal formats of the radio selective calling signal. Here, as an example, P
The signal format of the OCSAG signal is shown. FIG.
In (a), the radio selective calling signal includes a preamble signal PR, a synchronization code SC, and a plurality of frames F1 to F8. Each frame consists of two codewords.

FIG. 2B shows one code word. Each code word is composed of 32 bits, and has 1 identification bit, 20 data bits, 10 check bits, and 1 parity bit.
The identification bit is used to distinguish whether the data following this is a calling number or a message signal. For example, if the identification bit is "0", the data signal following the identification bit is the calling number, and if it is "1", the data signal is a message signal.

FIGS. 2C and 2D show signal formats when the data signal is a message signal. FIG. 2C shows a case where only the message signal is used. In this case, as described above, the message signal is RA
This message signal is stored in M6 and can be displayed only by operating the switch.

FIG. 2D shows a case where the data signal is a message signal including an encryption information signal, and this message signal is stored in the encryption message memory 7 by the memory control unit 4. The message signal stored in the encrypted message memory 7 is not displayed unless decryption information matching the encrypted information signal is input. The encryption information signal is determined in advance between the caller and the user.

FIG. 3 is a flowchart for explaining details of the message receiving and storing operation of the present invention.

First, it is determined whether or not the calling number (ID) included in the radio selective calling signal matches the own calling number stored in the ROM 5 (step S101). If it is determined that they match, it is determined whether the subsequent codeword is a message signal (step S102). If it is not a message signal, the calling is notified by a known means (step S106).

If it is determined in step S102 that the message signal is a message signal, it is determined whether the message signal has a predetermined encryption information signal (step S103). If not, the message signal is stored in the RAM 6. on the other hand,
If the encryption information signal is included in the message signal, the message signal is stored in the encryption message memory 7 (Step S105).

At this time, the encryption information signal may be stored together. For example, different encryption information may be used for each caller.

When the message signal is stored in the RAM 6 or the encrypted message memory 7, a call notification is performed (step S106).

In the above-described embodiment, the memory to be stored is distinguished depending on the presence or absence of the encryption information.
One message signal may be stored separately in one memory. At this time, the encryption information may be stored together with the message signal.

FIG. 4 is a control flowchart for explaining details of the display operation of the stored message signal.

When a switch for reading a message is operated (step S201), it is determined whether or not a predetermined time t has elapsed (step S202).
If the decryption information is input from the decryption information input unit 11 before the time t has elapsed (step S203), it is determined whether or not the decryption information matches the encryption information (step S20).
4). If it is determined that the message matches, the message signal having the encryption information matching the designated decryption information is read from the encryption message memory 7 (step S205).

On the other hand, if the decoding information is not input within the time t, the message signals stored in the RAM 6 are sequentially read (step S206). The message signals read in steps S205 and S206 are displayed on the display unit 9 (step S207).

If the input decryption information does not match the encryption information, the message signal stored in the encryption message memory 7 is not read out, and the process ends.

Only one type of encryption information is determined in advance, and only a message signal to which the encryption information is added is stored in the encryption message memory, and when decryption information conforming to the encryption information is input, The message signals stored in the encrypted message memory may be sequentially read out and displayed.

When a plurality of pieces of encryption information are used, these pieces of encryption information may be stored in the encryption message memory together with the message signal, and the message signal to which the encryption information matching the decryption information is added may be read. .

[0037]

As described above, the radio selective call receiver according to the present invention can transmit a message that the sender does not want to be seen by anyone other than the recipient by determining the encryption in advance.

Further, the recipient can easily display a message that he or she does not want to show to others by inputting decryption information (which may match the encryption) that is compatible with the encryption.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a radio selective calling receiver according to an embodiment of the present invention.

FIGS. 2A to 2D are signal formats of a radio selective calling signal.

FIG. 3 is a flowchart for explaining details of a message receiving and storing operation of the present invention.

FIG. 4 is a control flowchart for explaining details of a display operation of a stored message signal according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Antenna 2 ... Radio | wireless part 3 ... Decoder 4 ... Memory control part 5 ... ROM6 ... RAM7 ... Encrypted message memory 8 ... Display control part 9 ... · Display unit 10 ··· Switch 11 ··· Decryption information input unit 12 ··· Encryption comparison unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04Q 7/00-7/38

Claims (6)

(57) [Claims] 1. A radio selective calling receiver, comprising: receiving means for receiving a radio selective calling signal from a sender; storage means for storing a message included in the radio selective calling signal; First determining means for determining whether or not encryption information prohibiting display of a message is added; display means for displaying the message; and determining whether or not to display the message to which the encryption information is added. possess a second determining means, said second determination means includes means for inputting the arbitrary decryption information, and the decryption information the
Comparing means for comparing the encrypted information with the encrypted information.
If the step is determined to be compatible, the message specified on the display means
A radio selective call receiver for displaying a message . 2. A storage device comprising: a first storage unit for storing a message to which the encryption information is added; and a second storage unit for storing a message to which the encryption information is not added. The radio selective calling receiver according to claim 1, wherein 3. The message decoding system according to claim 1, wherein
2. The radio selective call receiver according to claim 1, wherein the radio selective call receiver is performed following the operation of the switch . 4. When the decryption information and the encryption information match.
If no judgment is made, a message is displayed on the display means.
Radio paging receiver of claim 3, wherein a no. 5. A radio selective calling receiver, comprising: a receiving means for receiving a radio selective calling signal from a sender; and a judging means for judging whether or not encryption information is added to a message in the radio selective calling signal. First storage means for storing the message without the encryption information; second storage means for storing the message with the encryption information; and first reading the message from the first storage means.
Reading means for reading the message from the second storage means.
Solution of have a reading means, said second reading means, corresponding to said encryption information
Input means for arbitrarily inputting reading information, wherein the decoding information
Is entered, a message to which the encryption information is added
A wireless selective call receiver for reading out a page from the second storage means . 6. The radio selective call receiver according to claim 5, wherein said second storage means stores said encryption information together with said message.