JP3071754B2 - Radio selective call receiver and display method of received information - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective call receiver having a function of displaying received information, hereinafter referred to as a pager, and more particularly to receiving and storing a specific information service transmitted by a radio signal, as needed. The present invention relates to a pager for displaying message information of stored service information by characters and symbols by inputting an information display instruction, and a method of displaying the message information.

[0002]

2. Description of the Related Art A pager is a device that gives an individual call number to a small portable radio receiver, dials the number, emits a radio wave from a base station, and notifies the portable person of the call.

[0003] Regarding the signal system used for the pager, POCSAG system is one of internationally defined examples.
Or CCIR radio paging code No. The method called 1 will be described with reference to FIG.

In this system, the bit rate is 512 bits.
With a / s FSK modulation, a batch word of 1.0625 seconds each is sent, followed by a preamble of 1.125 seconds. The structure of each batch word is 1 code word + 8
The frame consists of a total of 17 codewords, i.e., a 32-bit synchronization codeword and 8 frames each containing 2 codewords. Synchronization code
Each code word other than the word consists of a total of 32 bits including one bit of an address / message identification flag, 18 bits for an address, 2 bits for a function, 10 bits for a coding, and one even parity bit.

[0005] Each pager performs an intermittent reception operation so that it operates only in the frame to which it belongs.

[0006] The pager system is a one-way communication means. However, since a single communication time is short and a delay time before transmission is allowed to some extent, a simple message transmission by displaying numbers, characters, and the like is performed. It is widely used for simple information transmission. Furthermore, at present, in addition to mere individual call notification, specific information, for example, financial information such as stock prices and exchange rates by an information providing service and information that changes every moment such as weather forecasts are periodically transmitted, After receiving this information everywhere, it is also used for the purpose of displaying the latest information on a liquid crystal display (LCD) as needed.

FIG. 8 is a block diagram showing an example of the configuration of a conventional pager.

This pager includes a radio signal receiving unit 1 for receiving a radio signal of an individual call, a decoder unit 2 for decoding the received radio signal, an R0M4 in which its own call number is registered, and a radio signal contained in the radio signal. RAM 5 for storing message information to be transmitted, a speaker for making a call notification when an individual call number is detected, and a light emitting diode (LE).
D), etc., an alarm 9 and its driver 8, an LCD 7 and its driver 6 for displaying the message information stored in the RAM 5 by numbers, characters and symbols, a CPU 3 for controlling the operation of each of the above units, and a switching of the display method. It has key switches and the like used for operations and the like.

[0009] The selective call signal of each pager can be assigned a plurality of call numbers for each unit.
Each number is stored in the ROM 4 and can be used for an emergency call, a normal contact call, and the like. In the case of the specific service information described above, an identification number defined for each service information is stored in the ROM 4 together with a call number individually given to each pager.

In FIG. 8, a radio signal modulated by an individual call signal and a message information signal is received by an antenna, amplified and demodulated by a radio signal receiving section 1, and
The waveform is shaped and converted to a digital signal. The decoder unit 2 compares its own selected call number stored in the ROM 4 with the received and converted digital signal, and sends a call detection signal to the CPU 3 when they match. CPU3
Receives the call detection signal, sends a signal to the alarm driver 8 to drive the alarm 9. If there is message information in the wireless signal, the CPU 3 temporarily stores the message information in the RAM 5, and when the user wants to view it, sends a display instruction signal to the LCD driver 6 by operating a switch. The data is converted into numerals, characters, and the like and displayed on the display surface of the LCD 7. The alarm 9 can also switch the ringing notification by sounding a speaker or the like to silent sounding such as buzzer vibration or photodiode lighting by operating a key switch or the like.

[0011] Various proposals have been disclosed for such pager call notification and display method of received message information.

For example, Japanese Patent Application Laid-Open No. 63-253735 discloses a pager having a plurality of message storage memories, a list of memories storing significant information and a memory displaying the contents thereof. For the purpose of saving the number of display devices required for simultaneous display, on one display device, one of the two pieces of information blinks and the other information is distinguished as non-blinking to distinguish the two pieces of information. A "method of displaying a memory of a radio pager with a display function" to be displayed at the same time is presented.

The information displayed here includes the memory number storing the message, the memory number displaying the message, the subscriber number, and the priority of notifying the call by ringing during the silent mode. Have been.

Japanese Patent Application Laid-Open No. 63-258124 discloses that if an error is detected in the received address and information data, the call notification is omitted digit by digit or in order to prevent the call notification from being lost. Error detection is performed for each of a plurality of digit groups, and if an error is detected,
Alternatively, there is disclosed a "pocket pager display control device" which blinks a digit group and displays it together with non-blinking normal data.

Japanese Patent Application Laid-Open No. 1-286532 discloses a display color designating means and a color display means for improving the discrimination of a message. The content of received information, the elapsed time after reception, or There is disclosed a "paging receiver" that displays broadcast information in a designated display color according to the number of times the same information is received.

Japanese Patent Application Laid-Open No. Hei 2-15721 discloses that
A specific message is stored in a memory in advance to distinguish the correspondence of the user according to the type of the received call, and the received message is compared with the specific message stored in the memory, and the comparison result is obtained. A "reporting device for a radio selective call receiver with a display" is disclosed, in which the notification form of the call is changed according to the notification.

Further, Japanese Patent Laid-Open No. Hei 4-207639 discloses a predetermined method for making it easier to grasp the main points of display information which have become difficult to grasp as the number of characters displayed on one screen increases. There is disclosed a "selective call receiver with display" that displays data transmitted in characters, numbers, and symbols in a color different from that of other characters, numbers, and the like, and accentuates the display.

[0018]

In the case of the service information described above, the contents of each message information include a fixed part and a variable part (for example, in the case of a stock price or a currency exchange, a company name, a country name, etc.). The message information includes a fixed title portion and a variable portion represented by a number such as the number of transactions and the amount of money.
Are transmitted periodically at regular intervals.

Since such message information does not always change in a short time and is often the same as the previous reception information, a large number of message information that has been changed and which must be particularly noted are displayed on the pager. There is a problem that it is difficult to find out quickly from the message information of the above.

Moreover, such message information is generally so large that the amount of data received each time cannot be displayed unless scrolling on the screen, compared to the simple message added to the conventional individual call. Has a problem that the memory area of the RAM for storing the data is compressed.

[0021] It is an object of the present invention to emphasize and display a portion different from the previous received information in the message information of the specific service information received periodically and to save the storage capacity of the received information. An object of the present invention is to provide a pager that can be used and a method for displaying received information.

[0022]

According to the present invention, there is provided a method for displaying received information of a pager, wherein when message information of a specific information service is received, the same type of message information received and stored last time is read out, and the received current time is received. The message information is compared with the read previous reception information to extract and store the information of the difference portion, and when the information display instruction is received, the extracted information in the item unit including the difference portion has no difference. The information is displayed separately from the information.

Further, it is desirable to distinguish the information of the different portion by blinking display, black-and-white inversion display, or display of a different color when color display is possible.

The information received this time is compared with the previously received information read out. If no difference is detected, the user is not notified of the call, and the user is called only when the difference is detected. It is desirable to inform.

A pager according to the present invention stores an ID storage unit in which an assigned individual call number and a reception number of a specific information service are stored, and stores message information of the received information service, and stores at least the same type of message at the next time. A service information storage unit that holds information until it is received, a normal message information storage unit that stores message information added to an individual call, and compares the received information service message information with the same type of previous message information. A message comparing means for detecting a different part, a difference storage part for storing the detected difference part, and a character group in item units including the difference part stored in the difference storage part for the received message information of the information service. And a message information display section for displaying the message in a different display method from the other portions.

[0026]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of a pager according to the present invention, FIG. 2 is a memory map showing a storage area for message information, and FIG. 3 is a flowchart showing the operation of this embodiment.

In FIG. 1, the pager of this embodiment is:
A radio reception unit 10 for receiving and decoding radio signals; an ID memory 12 for storing a reception identification number (service ID) of a specific information service together with an assigned individual call number (call ID); A reception signal discriminating unit 14 for extracting an address signal of a signal and referring to the ID memory 12 to discriminate between an individual call and an information service; a notification processing unit 16 for notifying reception of an individual call and an information service message; An individual message memory 18 for storing a message added to a paging signal, a speaker 20 for notifying the reception of an individual paging signal or an information service, an indicator 20 such as an LED, and a buffer memory 22 for storing received message information of the information service The next time the same type of message information is received Service information memory 2 for holding up
4, a difference detecting unit 26 for comparing the received information information of the information service with the previous message information of the same type to detect a different part, a difference memory 28 for storing the detected difference, In addition to converting the message information of the format into characters and numerals, the display control unit 30 which designates the display of the difference as blinking, inverting black and white, or displaying different colors with reference to the difference memory 28, and receiving the instruction according to the instructions of the display controlling unit 30 And an LCD 32 for displaying the message information of the individual call and the information service.

In addition to the above, a set of each part,
An operation key switch for instructing a reset, display of a message, and the like, a timer for timekeeping, and the like are provided similarly to a general pager, but are not shown.

Of the above memories, the ID memory 12 is stored in the storage area of the ROM and the individual message memory 18
, Buffer memory 22 and service information memory 24
And the difference memory 28 are stored in the storage area of the RAM.

FIG. 2 shows a storage area of each data stored in the RAM of this embodiment.

The individual message memory 18 stores a call number, a reception time, and a simple message sent together with an individual call signal. The length of this message may be that there is no message for one call. Although the fluctuation is large, as in the past, alphanumeric characters, kana,
It is sufficient if there is a capacity of about several tens of Kbytes for storing a digital data message several times that can be converted into kanji or the like and displayed on the LCD 32 in about 20 characters × 2 to 3 lines.

The service information memory 24 stores and holds the last received data for each information service.
It consists of a service ID, a reception time, and data of an information service. When a plurality of information services are to be received, they are individually provided for each information service.
The data format and the number of digits of each item are determined in advance for each information service, and the total amount of data received and stored for one time is substantially constant. When the amount of received data for one time is small, it may be possible to carry over and hold the received data before the previous one. However, since the memory capacity is squeezed, in the present embodiment, the next data is received and compared. It is held until the processing is performed.

The buffer memory 22 is an area for storing the received message information data of the information service and comparing it with the previous data. The buffer memory 22 must have an area of the same size as the service information memory 24 of each information service. When a plurality of information services having different data amounts are received, one buffer memory having a size capable of storing the maximum received data amount of the information services is provided and shared. Need not be provided with a buffer memory.

The difference memory 28 is an area for storing a flag bit indicating whether or not there is a difference between the data of each item of the buffer memory 22 and the service information memory 24 as a result of the comparison. Provided.

[0036]

Next, a specific operation example of the embodiment of FIG. 1 will be described with reference to the drawings.

In FIG. 3, when the radio receiving section 10 receives a radio packet signal (S100), the received signal discriminating section 14 discriminates whether or not the signal is addressed to the pager based on the address code added to the packet signal. However, in the case of a signal addressed to this pager, the packet signal is fetched, and it is determined with reference to the ID memory 12 whether it is a signal reception of an individual call or a data reception of an information service (S11).
0).

In the case of an individual call signal, as in the prior art,
The notification processing unit 16 temporarily stores the call ID of the address code and the message in the individual message memory 18 (S2).
00), the user is notified by the annunciator 20 that the call signal has been received (S210).

When the user operates the key switch, the display control unit 30 is driven and the received message is
It is displayed on the CD 22 (S220, S300).

When the information of the information service is received, the service ID and the received data information are temporarily stored in the buffer memory 22 (S120).

Next, the difference detector 26 clears the difference memory 28 and sets all the difference flag bits to "0" (S130). Next, the data stored in the buffer memory 22 and the previous data of the same service ID stored in the service information memory 28 are read, and the two are compared to detect a difference (S140, 150).

If there is no change in all data and no difference is detected, the reception time in the service information memory 24 is updated (S160). In this case, since there is no change in the received data information, the notification processing unit 16 does not perform the reception notification, and returns to the reception monitoring system for the next wireless signal.

When it is determined that there is a change in the received data, the corresponding difference flag bit of the difference memory 28 where the difference is detected is rewritten from "0" to "1" (S170), and The reception time of the information service is updated, and the data of the buffer memory 22 is overwritten and held on the previous reception data (S180). In this case, since the received data information has changed, the notification processing unit 16 notifies the user that the update information of the information service has been received by the notification device 20 (S190). At the same time, for example, as shown in FIG.
May be displayed on the screen.

FIG. 4 is a flowchart of the operation when the user who has received the individual call or the reception of the information service displays the received message or new information on the LCD 32.

When the user performs a switch operation by designating an individual call number or a service ID (S31).
0), the display control unit 30 first determines either the individual call number or the service ID (S320).

In the case of an individual call, the display controller 30 reads the message of the designated number from the individual message memory 18, converts it into characters, numerals, etc. and displays it on the LCD 32 (S330).

After reading the displayed message, the user inputs a reset instruction or, if there is no reset instruction, displays the message for a predetermined time, for example, 40 seconds, and then erases the display on the LCD. (S340). Further, if the user does not perform the message saving process in order to read the message again, the message of the individual message 18 is also deleted (S350).

The user designates a service ID service,
If the service ID is determined in S320, the display control unit 3
0 is the corresponding service ID from the service information memory 24
Read out the data and convert it to letters and numbers,
These data are compared with the difference memory 28 to extract a unit of a series of characters, numbers, and the like including the data for which the difference flag is set. The item is used as a unit. For example, in a single item represented by a three-digit number 129 or the like, when a one- or two-digit number changes, such as 128 or 130, no change occurs. This is for displaying the whole item including the digit number as changed.

Then, in order to emphasize these extracted items separately from other items, different colors such as red and yellow are used for other black and white characters in the case of blinking, black and white inversion, or color display. specify. In response to this instruction, the LCD 32 highlights and displays items different from the previous reception data among the reception data of the service ID (S36).
0).

If there is no reset instruction, the display data on the LCD 32 is automatically deleted after a predetermined time has elapsed (S370). This display time can be changed as needed.

In this case, even if the display data on the LCD 32 is deleted, the data in the service information memory 24 and the data in the difference memory 28 are retained until they are updated by the next received data. can do.

The data in the buffer memory 22 is held until the next information service is received. However, the next received data is not necessarily the data of the same information service ID.

FIG. 5 shows an example of this process.

(A) is a state before receiving the data of the information service ID1.

The buffer memory 22 stores the data of the service ID 2 received last time, "US aaa, UK bb ..."
Is stored. The service information memory 24 stores the data of the service IDs 1, 2,..., “Tokyo 105, Osaka 33,.
.., And the like, and data “00010, 001... 11” and “O1O” of the difference part for each service ID stored in the service information memory 24 in the difference memory 28.
11... 100 ”are stored.

(B) is a state in which new data “Tokyo 222, Osaka 33...” Of the service ID 1 is being received in the buffer memory 22.

The service information memory 24 and the difference memory 28
Are the same as (A).

FIG. 7C shows a state in which the data in the difference memory 28 is cleared to all "0" in preparation for comparing the received data with the previous data.

(D) shows the buffer memory 2 received this time.
., And the data “Tokyo 1” in the service information memory 24 which is the previous data.
05, Osaka 33 ... ".

Since “Tokyo 105” is changed to “Tokyo 222”, the service ID of the difference memory corresponding to “Tokyo 105” is changed.
The difference flags 3 to 5 of 1 are changed from “0” to “1”.

(E) shows a state in which the data in the buffer memory 22 is overwritten on the record of the service ID 1 in the service information memory 24 since the difference detection has been completed.

FIG. 6 (B) shows that the service
It is a display example when the data of D1 is displayed on the LCD 32.

On the screen of the LCD 32, a service ID,
The time at which the data was received and the latest data of the information service are displayed. Among these data, "Tokyo 222" is different from the previous data. In particular, the numeral 222 is blinking or, in the case of a color display, a different color such as orange with respect to other black and white characters. Will be displayed as

[0064]

As described above, according to the present invention, the present message information and the previous received information of the received information service are compared for each item to extract the information of the difference portion, and the information display instruction is received. At the same time, by highlighting and displaying the extracted difference information separately from the items having no difference, from the received information of a large amount of information services, the portion that has changed from the previous reception information is promptly and, There is an effect that can be easily found.

Also, the received message information of the information service is compared with the previous message information of the same type in item units to detect an item having a difference, the detected difference portion is stored, and the current message information is stored. By overwriting the previous message information, the storage capacity of the received information can be saved.

[Brief description of the drawings]

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

FIG. 2 is a diagram illustrating a storage area of each data stored in a RAM according to the present embodiment.

FIG. 3 is a flowchart of a receiving process.

FIG. 4 is a flowchart of memory reading.

FIG. 5 is a diagram showing the stored contents of each memory.

FIG. 6 is a diagram showing a display example of the LCD 32.

FIG. 7 is a diagram illustrating a signal configuration of a POCSAG system.

FIG. 8 is a block diagram illustrating a configuration example of a conventional pager.

[Explanation of symbols]

 Reference Signs List 10 wireless receiving unit 12 ID memory 14 received signal discriminating unit 16 notification processing unit 18 individual message memory 20 notification unit 22 buffer memory 24 service information memory 26 difference detection unit 28 difference memory 30 display control unit 32 LCD S100 to S370

Claims (2)

(57) [Claims] 1. A radio signal receiving unit for receiving a radio signal of an individual call, an individual call number detecting unit for detecting an individual call number from the received radio signal, and a call notification when an individual call number is detected. An individual call notification unit to perform, a message information storage unit that stores message information included in the radio signal, a message information display unit that displays the stored message information by numerals, characters, and symbols; and an individual call notification unit. A radio selective call receiver having an operation key switch for operating the switching of the display operation of the message information display unit; an ID storage unit in which a reception number of a specific information service is stored together with an assigned individual call number; Stores received information service message information, and receives at least the same type of message information next time Service information storage unit that stores the message information added to the individual call other than the information service, a normal message information storage unit that stores the message information of the received information service, and the same type of previous message information A message comparing unit that detects a different portion; a difference storage unit that stores the detected difference portion; and a received message information of the information service including the difference portion stored in the difference storage unit. A message information display unit for displaying a group of characters of the item in a different display manner from the other parts. 2. The radio selective call reception according to claim 1, wherein the individual call notification unit does not perform the call notification when the message comparison unit does not detect a difference when the message information of the specific service information is received. Machine.