JPS63169833A - Selective call receiver with display - Google Patents

Abstract

PURPOSE:To keep the secrecy of a message by deciding a code system in advance between a caller and a called party so as to display a reception message when a set code specific number is coincident with a code specifying signal specifying the code of the message. CONSTITUTION:A detection means M4 detects a code specifying signal specifying the code system of the received message signal and sends the result of detection to a deciding means M7. A setting means M5 sets the code specifying number specifying the code system decoded by its own receiver and sends it to the means M7. The means M7 decides whether or not the specifying signal of the means M4 is coincident with the specifying number of the means M5, and when it is decided to be coincident, the decoding means M8 decodes the message signal according to the code system corresponding to the code specification number coincident and stored in the code system storage means M6. Then a display control means M9 displays the message in response to the result of decoding. When the code specification signal included in the message signal corresponds to the code number of the code system to which decoding is not allowed by the receiver, even when the selection signal and its own number are coincident, the message is not displayed. Thus, when the code system is decided between the caller and the caller party, the secrecy is ensured.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a selective call receiving device capable of displaying messages with improved confidentiality.

[Prior art]

A selective call receiving device with a display has a unique self-number assigned to its own device, and when a paging signal transmitted from a base station matches the self-number, it determines that it is a call to its own receiving device and sounds a buzzer. It is configured to make a sound to notify the holder. Furthermore, there is also known a device that not only notifies the user of a call, but also displays a message on a display according to the transmitted data. Increasingly, it has become necessary to utilize this data transmission function to transmit highly sophisticated data and sensitive and important data.

[Problems to be solved by the invention]

In this way, the display-equipped selective call receiving device is specified by its own unique number corresponding to a telephone number, and can send a message to the specified display-equipped selective call receiving device. However, since data transmission is unidirectional, it is not possible to determine whether the called party is the correct one. Therefore, if a wrong call signal is sent, there is a problem that not only the data cannot be transmitted to the intended party, but also the data may be leaked to others. In addition, the same self-number may be set for multiple selective call receiving devices with display, but in this case, it is difficult to maintain the confidentiality of transmitted data between the owners of each receiving device. . Furthermore, for a group of display-equipped selective call receiving devices that have the same self-number, the user can set an identification number that can be changed freely, and include this identification number in the message to be sent. It is also conceivable to identify the called party by number. In such a system where the identification number can be changed freely, it is more likely that data will be transmitted erroneously. The present invention has been made to solve the above problems, and its purpose is to maintain the confidentiality of message data received by a selective call receiving device with display.

[Means to solve the problem]

The structure of the invention intended to solve the above problems is as shown in the concept in FIG. When the call signal is received by the machine M1 and the call determination means M2 determines that the call signal matches the own number, the display means M3
The selective call receiving device with a display for displaying a message according to a message signal by driving a message signal includes code specifying signal detection means M4 for detecting a code specifying signal for specifying the code system of the message signal from the message signal; The stored code system storage means M6, the code identification number setting means M5 for setting a code identification number that identifies the code system that can be decoded by the own receiving device, and the detected code identification signal matches the set code identification number. When the determining means M7 determines that the code identification signal and the code identification number match, the matching code identification number stored in the code system storage means M6 is used. A decoding means M8 for decoding a message signal according to a corresponding code system, and a display control means M9 for displaying a message according to the decoding result by the decoding means M8 are provided.

[Effect]

A code identification number that can be decoded by the receiving device is set by the user in the display-equipped selective call receiving device as needed. The message signal includes a code specifying signal as necessary. Further, a basic code system necessary for decoding the message signal and a special code system as required are stored in the code system storage means M6. When the calling signal and the own number match, and the code identification signal detected from the message signal by the code identification signal detection means M4 matches the code identification number preset by the code identification number setting means M5, , the message signal received by the code system corresponding to the matched code number is decoded and displayed. On the other hand, if the code specific signal included in the message signal corresponds to a code number of a code system that the receiving device is not permitted to decode, the message will not be displayed even if the selection signal and the self-number match. Therefore, the calling party and the called party agree on the code system of the message signal to be sent, and the called party receives a selective call with a display indicating the code specific number specifying the agreed code system. The message can be transmitted in a confidential manner by setting it on the device, and the caller sends a code identification signal that specifies the code system, and also encodes the message body in the promised code system and sends it. In addition, if the transmission of the code identification signal or the setting of the code identification number is omitted, it should be treated as a basic code system used when there is no need to maintain confidentiality. Good too.

【Example】

Embodiments to which the present invention is applied will be described below based on the drawings. FIG. 2 is a block w1 diagram showing the configuration of the selective call receiving apparatus with display of this embodiment. 1 is a selective call receiving device with a display, and a control switch 19 is provided on its outer surface.
It is equipped with a speaker 161, a display 18, and the like. 11 is a receiving section, 12 is a waveform shaping section, and 13 is a microcomputer. Reference numeral 14 denotes a storage device consisting of ROM, RAM, etc., and both reading and writing thereof are controlled by the microcomputer 13. Reference numeral 15 denotes a sound generating section which makes the speaker 16 sound. Reference numeral 17 denotes a display driving section, which drives the display 18 in accordance with commands from the microcomputer 13 to display information. The display 18 is, for example, an LCD. Reference numeral 20 denotes a battery saving unit that controls power supply from a battery 21 built into the selective call receiving device 1 with display and causes the selective call receiving device 1 with display to operate intermittently to suppress consumption of the battery 21. The control switch 19 consists of a numeric keypad and function keys. Fig. 3 (a), (ra), (C), (d) shows the selective call signal C.
FIG. The synchronization signal sC is a signal for synchronizing the display-equipped selective call receiving device 1 with the transmission speed of the selective call signal C. The call signal PC is originally a signal for selecting each display-equipped selective call receiving device 1,
This is a signal for the display-equipped selective call receiving device 1 to check against its own number to determine whether or not it has been called. The identification signal DC will be described later. Message signal MC is a signal obtained by encoding an arbitrary message. FIG. 3(a) shows the basic structure of the selective call signal C. ! FIG. 3 (b) shows an example in which the identification signal DC is positioned at the beginning of the message signal MC. FIG. 3(C) shows an example in which the identification signal DC is positioned at the end of the message signal MC. Figure 3 (The mountain is the two message signals MC1
, MC2 are received by different display-equipped selective call receiving devices 1, the respective message signals MCI, MC2,
, MC2 shows an example in which the identification signals DCI and DC2 are positioned at the beginning of the signals DCI and DC2. In this embodiment, the receiving antenna 1o, the receiving R11, and the waveform shaping section 12 correspond to the receiver M1 shown in FIG.
8 corresponds to the display means M3. Further, the control switch 19 and a part of the storage device 14 correspond to the code specific number setting means M5, and a part of the storage device 14 corresponds to the code system storage means M6. The microcomputer 13 and its processing constitute a calling determining means M2, a code specifying signal detecting means M4, a determining means M7, a decoding means M8, and a display controlling means M9. Next, the identification number, identification signal DC, and identification conditions will be explained. In this embodiment, the calling signal and self number are common to a plurality of display selective call receiving devices. In this embodiment, a plurality of display-equipped selective call receiving devices selected by this call signal are called a group. Within this group, the calling party and the called party constitute a unique selective calling system. In this embodiment, the identification numbers are set from 0000 to 0000 for each group.
Provide up to 9999. Among these identification numbers, ooo. ~0009 is the code specific number (0004,0005)
, priority number (0000,0001), etc., as a function number. Identification numbers from 0010 to 9999 are used as selection numbers for individual designation within a group, information designation indicating the content of a message, and the like. These identification numbers are input from the numeric keypad of the control switch 19 and set in the storage device 14. The code specific number specifies the code system of the sent message, and if the code specific number is not specified, the AS
It means a basic code based on CII code, and when the code specific number is (0004), it means the first special code, and when the code specific number is (0005), it means the second special code. These three types of code tables are then stored in the storage device 14.
is stored in A code specific number of a code system that can be decoded by the user's own display-equipped selection receiving device is inputted from the ten key of the control switch 19, and the code specific number is set in the storage device 14. If not set, the code system that can be decoded is the basic code. Further, when the code specifying signal is not detected in the identification signal, it is assumed that the message is encoded with the basic code. The priority number indicates the importance of the received message, and if the receiving device is set to receive only messages of high importance, if a message of low importance is sent, it will not be called. No notification will be made. In addition, identification conditions such as a logical sum condition and a logical product condition are inputted from the function keys of the control switch 190. For example, if the person with selection number 0020 wishes to receive messages using the second special code, 'oozo,
AND, ooOs”. Mana, selection number 0
If 0200 people wish to receive only messages of high importance, set "0020. AND, 0001". Also, if you wish to call either the person with selection number 0020 or the person with selection number 0025, call 0020. O
On the other hand, the identification signal DC is transmitted in the form of specifying the identification number. For example, when calling a person with selection number 00200 belonging to a group, the signal is set as '0020'. selection number 0
When sending a message using the second special code system to a person with 020, the signal is '0020.0005'.In addition, when calling all selective call receiving devices with display belonging to the group, '0010' is used as the signal. When calling a person with selection number 0020 and a person with selection number 0025, the signal indicates ``0020.0025''. For a range of selection numbers,
'0040. ~． 0065''. In this way, no special identification conditions are given to the identification signal DC. However, as another example,
An identification condition corresponding to a logical sum or a logical product may also be given to the identification signal DC. Then, if the identification number specified by the identification signal DC includes the identification number set in the selective call receiving device with display under the logical condition between the identification numbers set in the selective call receiving device with display, it is determined that there is a call. judge. The condition that the identification number is included in the identification signal under this logical condition also corresponds to the identification condition. For example, if the display-equipped selective call receiving device is set to 10020°AND, 0005', the identification signal is "
If the signal does not contain both "0020" and "0005", the calling operation will not be performed. OR,
0025", the identification signal is set as "0025".
0. ” or “0025’, the calling operation will not be performed. Note that if there is no particular function designation from oooo to 0009, it is assumed that 0000 is designated. In other words, the message code system is a basic code system, and the importance of the message is considered to be low. Next, the operation of this embodiment will be explained based on the drawings. The caller transmits numbers or symbols corresponding to a paging signal, an identification signal, and a message signal to the base station from the nearest telephone or transmitting-only device, depending on the code system used. A selective calling signal C transmitted from a base station (not shown) is received by the receiving unit 11 via the antenna 10 of the selective calling receiving device 1 with display. The received selective call signal C is sent to the microcomputer 13 by the waveform shaping section 12.
The signal is shaped into a rectangular wave that can be input into the microcomputer 13, and is stored in a predetermined area of the storage device 14. The ROM, which is a call-only memory of the storage device 14, stores a call signal PC, a corresponding self-number, and several types of code system tables. On the other hand, the RAM, which is a readable and writable memory of the storage device 14, stores a plurality of identification numbers written by the user from the control switch 19 and logical conditions between the identification numbers. The microcomputer 13 repeatedly executes the one-cycle processing procedure shown in FIG. In step 101, the selective call signal C from the waveform shaping section 12 is input as data. In step 102, the calling signal PC is extracted from the selective calling signal C. In step 103, it is determined whether the calling signal PC matches the own number stored in the storage device 14. If it is determined that the number matches the own number, it means that the own selective call receiving device has the necessary conditions for a call, so the process moves to step 104. On the other hand, if the calling signal and the own number do not match, the process is terminated because the call is not to the own receiving device. In step 104, the message signal M of the selective call signal C is
The identification signal DC is extracted from C. This extraction is performed by extracting data at the position where the identification signal DC should be located, if the position of the identification signal DC included in the message signal MC is determined in advance. Furthermore, if the position of the identification signal DC is not determined, predetermined signals may be inserted at the beginning and end of the identification signal DC. Next, in step 105, it is determined whether a selection number is set in the storage device 14. If the selection number is set, in step 106, the identification signal DC
Then, it is determined whether the selected number satisfies the logical condition and is included in "C".For example, the identification number (!: m logical condition) is determined.
0020. ANII, 0005. OR,0025
', the identification signal DC is "0020"
or "0025". Here, if the determination is "No", the process ends without performing a calling operation because the calling condition for the own receiving device is not met. Furthermore, if it is determined in step 105 that no selection number has been set, all calls will be accepted and the calling conditions regarding the selection number have been met, which is the same as the "YES" determination in step 106. , step 1
Move to 07. In step 107, it is determined whether the identification signal includes a code specifying signal. If there is no code identification signal, it is determined that the message does not need to be kept secret and is encoded with the basic code, and in step 108 the received message is coded according to the basic code table stored in the storage device 14. It is decoded and stored in a predetermined area of the storage device 14. Further, if there is a code specifying signal, step 109
Then, it is determined whether the code specific number matches the code specific number set in the storage device 14. If the code identification signal and the code identification number do not match, or if the code identification number is not set in the storage device 14, there is a mismatch between the code systems agreed upon between the calling party and the called party. In such a case, confidentiality is maintained and the process is terminated without displaying the message. When the code identification signal and the code identification number match, the received message is decoded according to the special code table stored in the storage device 14 corresponding to the code identification number that matches, and the decoded data is stored in the storage device 14. is stored in a predetermined area. If it is determined in step 107 that there is no code identification signal, it is determined whether or not a code identification number specifying a special food system is set in the storage device 14, and only if the code identification number is not set, the basic It may also be possible to receive codes of a coding system. Next, in step 111, it is determined whether the priority number '0001' which specifies the importance of the message is set.The priority number '0001' is set when you want to receive only messages with high importance. Therefore, if this is not set, it means that the call will be accepted immediately,
A paging operation (steps 113-114), which will be described later, is executed. When the priority number "0001" is set, the process moves to step 112, and the priority number "0001" is set in the identification signal DC.
” is included. If “0001” is not included, it means that the priority level of the received message is lower than the priority level set on the receiving device, and the call operation and message display are The process ends without any action being taken.In the case of a message with such a low priority level, it is possible to prevent the receiving device from immediately calling the message.The message stored here is indicated by a predetermined operation of the control switch 19 by the user. Either the priority number '0001' is not set in step 111, or the priority number ''0001' is set in step 112 and the priority signal is also not set in the identification signal. If it is determined that there is a message, it is determined that the priority level of the message is higher than the priority level of the receiving device, and the paging operations of steps 113 to 114 are executed. In step 113, a command is given to the sound generator 15 to cause the speaker 16 to produce sound. This ringing alerts the called party to the call and stops the ringing. The message is then displayed on the display 18 in step 114. Here, when a plurality of identification numbers and logical conditions are set, the selected identification number and logical condition are displayed. An example of the use of this embodiment described above will be explained. First, if the message signal does not include a code identification signal and the called party does not set any other identification number, steps 101, 102, 103, 104, 105, 107,
As shown in steps 108, 111, 113, and 114, only when the calling signal PC matches the own number, a sound is generated, and the message is decoded and displayed using the basic code table. Further, in this embodiment, the identification number set in the display-equipped selective call receiving device is divided into a function number and a selection number. By setting the selection number to a number unique to the individual within the group, it is possible to selectively call the individual. Further, by setting the selection number according to the type of message, such as stock information or traffic information, it is possible to selectively call according to desired information. Furthermore, a code specific number and a priority number are provided as function numbers. Since the message having the code specific signal can only be decoded by the receiving device to which the code specific number has been set, confidentiality is maintained. Furthermore, the priority number represents the importance of a message, and the presence or absence of a sound is switched depending on the importance of the message. This allows the called party to restrict calls when he or she does not want to receive calls, such as during a meeting. Additionally, the called party can add logical conditions between the selection number and the function number, allowing various combinations to be set. For example, “0020.OR,0025,A
N.D., 0005. By setting "AND, 0001", you can receive a call when the identification signal includes either "0020" or "0025" and "0005" and "0001".In this example, the selection number is 00
Data with a high priority level can be sent to the person 20 and the person whose selection number is 0025 using the second special code. In addition, the selection signals are "0010.~", "0025.~"
．． It is also possible to specify a range, such as 0040''. In this embodiment, the identification number is a 4-digit number, but it may also be a symbol such as an alphabetic character, or a binary code. It is not necessary to set this, and even if the system uses only its own number to identify calls to its own receiver, a code specific number may be set to transmit messages using a special code system. Among the conditions, “OR” corresponds to the logical sum condition
Even if it is not set, if no logical condition is set, it is assumed to be "OR", and if a function number is set, "A" is assumed.
It may be assumed that "ND" is set.

【Effect of the invention】

The present invention decodes the received message signal and displays the message on the display when the set code identification number matches the code identification signal that identifies the code of the message signal. By agreeing on a code system in advance between the callee and the called party, the confidentiality of transmitted data can be maintained.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram showing the configuration of the present invention, FIG. 2 is a block configuration diagram showing the configuration of an embodiment to which the present invention is applied, and FIG. 3 is the data structure of the selective call signal used in the embodiment. FIG. 4 is a flowchart showing the processing procedure of the microcomputer used in the embodiment. Ml...Receiver M2...Call determination means M3
...Display means M4...Code specific signal detection means M5...Code specific number setting means M6...
・Code system storage means M7... Judgment means M8...
・Decoding means M9...Display control means 1...Selective call receiving device with display 10...Receiving antenna 11°・
・Receiving section 12...Waveform shaping section 13...Microcomputer 14...Storage device 15...Sound generation section 16...Speaker 17...Display drive section 18...° display Device 19...-Control switch 20...Battery saving section 21...Battery

Claims (1)

[Claims] (1) A receiver receives a paging signal for the calling party to select a called party and a message signal following this paging signal, and the paging determining means determines that this paging signal matches the own number. a code specifying signal for detecting a code specifying signal for specifying a code system of the message signal from the message signal in a selective calling receiving device with a display that drives a display means to display a message in accordance with the message signal; a detection means; a code system storage means for storing a code system; a code identification number setting means for setting a code identification number for identifying a code system that can be decoded by its own receiving device; a determining means for determining whether or not the code specifying number matches the code specifying number; and when the determining means determines that the code specifying signal and the code specifying number match, the code specifying signal is stored in the code system storage means. A selection receiving device with a display, comprising: decoding means for decoding the message signal according to a code system corresponding to the matched code specific number; and display control means for displaying a message according to the decoding result by the decoding means.