JPH0226896B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radio selective call receiver with a display function applied to an individual selective call radio communication system.

In recent years, this type of radio selective calling receiver has become increasingly compact and multi-functional in order to meet the needs of users. In particular, in terms of multi-functionality, in addition to the conventional paging service that uses only a notification tone using a selective paging signal, message information can be added to the selective paging signal, and the message information can be displayed on a display attached to the receiver. Services for transmitting messages by displaying messages (hereinafter referred to as "call display") are becoming more and more popular. Furthermore, in addition to having such a call display function, this display can also be used to display various statuses.
It is being considered that increasing the added value of the receiver will make it more convenient for the user. Among the,
Re-reading message information that has already been received and stored, protecting or deleting the stored contents, setting the display time when displaying by scrolling, sending the stored contents to a device external to the receiver, etc. can be done directly by calling Some of these important functions related to display operations have already been put into practical use.

However, when using such a conventional multi-functional selective call receiver with a display function,
If the user receives a new selective call signal and a message signal that follows it while the user is operating a function other than the above call display, the user must first go to the new call display in order to give priority to the new call display. Discontinuing or discontinuing multi-functional operations that have been performed not only confuses the user in operation, but also results in the inability to utilize the functions satisfactorily.

An object of the present invention is to notify that even if a new message signal is received while operating a function other than the above-mentioned call display, the function is continued to be operated and a notification that a new message signal has been received is provided. It is an object of the present invention to provide a radio selective calling receiver with a display function capable of displaying the new message signal on a display and activating a calling alarm after waiting for the completion of a functional operation.

According to the present invention, there is provided a wireless selective calling receiver with a display function that receives a message signal following its own selective calling signal, activates a calling alarm, and displays the message signal on a display using a calling display function. , a storage means for storing up to N (an integer of N≧2) the received message signals, and a process activated by a switch operation to process the message information stored in the storage means and display the processing content. and a means for determining whether or not the display device is displaying, and when the display device receives a new message signal while displaying, the display device continues displaying the message while continuing the displaying process. A wireless selective calling receiver with a display function is obtained, which has a function of notifying that a new message has been received using at least a part of the receiver.

Next, embodiments of the wireless selective calling receiver with display function according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention. In this figure, a radio signal received by an antenna 1 is amplified by a radio section 2 and then demodulated. This demodulated signal is sent to a decoder 4 by a waveform shaping circuit 3.
is converted into a readable waveform. Decoder 4
is a programmable read-only memory (P-
It compares its own calling number, which is written in advance in the ROM) 5, with the signal from the waveform shaping circuit 3, and if the two numbers match, it notifies the central processing unit (CPU) 6 that there is a call. A message signal following the calling number is sent to the CPU 6. Note that two types of call numbers, A call and B call, are written in the P-ROM 5, so that a so-called dual call service is possible. In CPU6,
When the message signal sent from the decoder 4 is decoded and the end of the message signal is determined, a signal transmission stop command is sent to the decoder 4, and
The decoded message signal is stored in a random access memory (RAM) 7. At the same time, an LCD (Liquid Crystal Display) 9 is displayed via an LCD driver 8.
to provide visual information of the message to the person carrying the receiver, and also sends a tone signal to the amplifier 10 and drives the speaker 11 to notify the receiver of a call. The reset switch 12 stops the sound,
It notifies the CPU 6 via the decoder 4 of stopping the LCD display, setting of display related functions other than the call display, etc. Further, the mode changeover switch 13 performs changeover between normal mode and memory mode. Here, normal mode is a mode in which a call alarm is issued at the same time as the message is received, and memory mode is a mode in which a received message is temporarily memorized and a call alarm can be issued when switching to normal mode later. It refers to the mode. The push switches 14, 15, and 16, together with the reset switch 12, set display-related functions other than the call display. The crystal oscillator 17 is a clock generating element that operates the decoder 4.
8 is an oscillation element for generating a clock for operating the CPU 6.

FIG. 2 is an example of a signal configuration of the selective calling system with message information applied to the embodiment shown in FIG. In the figure a, P is a preamble signal, F is a frame synchronization signal, N is a selective call signal,
And I is a message signal. A plurality of message signals I are arranged as necessary depending on the length of the message. b and c in the figure show BCH31, 2 as the selective call signal N and message signal I, respectively.
This is an example using 1. This signal consists of 21 information bits and 10 check bits, and uses the first bit of the information bits to
A distinction is made between selective calling signals and message signals.

FIG. 3 is a diagram schematically showing an example of the configuration of the LCD 9 in FIG. 1. In this example, in addition to displaying message information consisting of a number string on the dot matrix, operating information of the receiver and other functional information can also be displayed at the top. In this figure, MP is lit if the message displayed at the time of operation of the receiver is protected, and M1 to M8 represent the memory number of the message currently displayed at the time of operation. There is. Of these, M1 is set to be the latest message, and M8 is set to be the oldest message. MM lights up when the receiver is in memory mode and AR lights up when alarms and displays are in a state where they are automatically reset. RP lights up when a repeat call is received. The triangle mark lights up when the message information exceeds the number of digits on the display and indicates that there is subsequent data to the displayed message. The circle mark lights up when displaying CALL, such as when in memory mode. It goes without saying that the number of lighting displays provided at the top of the matrix display screen can be increased as needed, in addition to the provided call display, such as MP indicating message protection.

FIG. 4 shows the decoder 4 in the embodiment of FIG.
This figure shows the specific configuration of the system using a block diagram. In this figure, when a readable signal output from the decoder 4 is given from the waveform shaping circuit 3, the SC detection circuit 4-1, the bit synchronization circuit 4-2,
It is sent to the matching circuit 4-3. SC detection circuit 4-1
Frame synchronization is achieved by the bit synchronization circuit 4-2, and then bit synchronization is achieved by the bit synchronization circuit 4-2. In accordance with these synchronization signals, the P-ROM reading/decoding circuit 4-4 sends a read pulse to the P-ROM 5 to decode the selective call number previously written in the P-ROM 5. This selective call number is compared with the received signal in the matching circuit 4-3, and if they match, the message signal received following the selective call signal is sent to the CPU 6. CPU6
From this, a start signal is given when the power is turned on, and a signal transmission stop signal is given when the message signal ends. The clock generating circuit 4-5 generates a clock signal that determines the operation of the entire decoder, and is composed of an oscillation circuit and a frequency dividing circuit. Note that 4-6 is a battery saving (BS) control circuit.

FIG. 5 is a flowchart for explaining the operation of the decoder 4. First, in step (1), when a startup command is received from the CPU 6, in step (2), the RF circuit is turned on and waits for a preamble signal to be received. If the signal is not received, wait for the timer (time α) that monitors the BS OFF (RF ON) time to end according to (4), and then turn RF OFF (BS ON) according to (12). do.
Next, in step (13), wait for the timer (time β) that monitors the BS ON time to end, and then turn on the BS ON time again.
Repeat the RF ON operation in (2). Repeating the above operations is a normal signal standby state. Now, in steps (3) and (4), the RF
If a preamble signal is received while ON, it waits for the subsequent synchronization signal SC in (5). If the SC is not received, it returns to the BS state, but if the SC is received, each word is received by (6). This received signal is compared with its own selective calling number in steps (7) and (8). As a result, if the received calling number matches the own selective calling number, the subsequent message signal is sent in step (9).
Send to CPU6. When the CPU 6 detects the end of the received message, it stops transmitting the message signal in step (10). However, the reception of the signal is determined in advance in (11).
This continues until an ID signal is received. Here, the ID
The signal indicates that there is no selective calling number after that.

FIG. 6 is a block diagram showing a specific configuration of the CPU 6 in the embodiment shown in FIG. This CPU6 is formed from one chip,
This includes ROM, RAM, I/O ports, clock oscillation circuits, etc. A series of operating instructions for executing various functions are written in the program memory 6-1. The contents of the address corresponding to the program counter 6-2 are given from the program memory 6-1 to the control section 6-3. According to this content, the control section 6-3 sends a control signal CS to each section, and various calculations, data transfers, etc. are executed. The program counter 6-2 normally increments by "+" each time the contents of the program memory 6-1 are sent to the control unit 6-3, but when there is a jump command etc., the count value is changed accordingly. . The interface between the external circuit and the data bus 6-4 includes input/output ports 6-10, output ports 6-11, output ports 6-12, input/output ports 6-13, input/output ports 6-14, and input/output ports 6-14. It is composed of an output port 6-15 and an input/output port 6-16. The input/output port 6-10 reads the status of the push switches 14, 15, and 16. The output port 6-11 sends out a sound signal to the amplifier 10 and control signals for command/data, read/write, and message start/end to the LCD driver 8. Output ports 6-12 send data to LCD driver 8.
Input/output port 6-13 and input/output port 6-14
are connected to the decoder 4, and are used to activate the decoder, input clock and data from the decoder 4, output a command to stop sending data to the decoder 4, and operate the reset switch 12 and mode changeover switch via the decoder 4. Read the status of 13. The remaining two terminals of the input/output port 6-14 are connected to the RAM 7, and perform read/write and address/data control for the RAM 7. I/O port 6-15 and I/O port 6
-16 inputs and outputs data to and from the RAM7. Furthermore, the data bus 6-4 is also connected to a program counter 6-2, a data memo 6-5, an accumulator 6-6, and an arithmetic unit (ALU) 6-7, for transferring calculation results and data.
Note that a clock signal for controlling the overall operation of the CPU 6 is generated by the crystal oscillator 18, the oscillating section 6-8, and the timer 6-9.

FIG. 7 shows a specific example of a message signal storage unit composed of a data memory 6-5 within the CPU 6 and an external RAM 7. Figure a shows the memory area of the data memory 6-5, M1-M
8 and MP1 to MP4 are storage units each having contents as described later. Also, figure b shows the external RAM
7, F1 to F12 are file information storage sections, and S1 to S13 are storage sections (sectors) that actually store message contents.
Note that AC is an alert request counter when receiving a call.

In the above, M1 to M8 are file numbers F1 of the external RAM 7 in which message information is stored.
-F12 are stored, of which M1 indicates the newest message and M8 indicates the oldest message. When a new message is received, M
The contents of the memory are shifted in the order of 1→M2, M2→M3, M3→M4, etc., and the contents of the last M8 are erased at this point. In this way, for messages that you want to prevent from being automatically deleted when new messages are received, you can use an external switch to save the file information from MP1 to MP1.
Transferred to MP4's protected message memory.
F1 to F12 in the external RAM 7 store the number of the sector in which the message is actually stored.
Actual messages are stored in sectors S1 to S13. In this way, it is assumed that the external RAM 7 is managed on a sector-by-sector basis. In the example shown in Figure 8, the latest message is stored in the first memory of external RAM 7.
It is assumed that the first file is stored in a file F1, and the first file consists of a first sector S1 and a third sector S3. MF1-MF8 are 1-bit memories indicating whether M1-M8 have a message, and are set to "1" if there is a message signal, and "0" if there is no message signal.

FIG. 8 is a flowchart showing the basic operation of the CPU 6. First, in step (1), the power is turned on, and then, in step (2), various memories, counters, and flags are set to the initial state, and the decoder 4 is activated in step (3). ), it enters a reception standby state. When in the standby state, when a clock signal indicating that a signal has been received from the decoder 4 is received in step (5), the process proceeds to reception operation related processing shown in step (6), which will be described in detail later. Also,
In step (7), by a combination of operations of the reset switch 12, push switches 14, 15 and 16, it is possible to move to message display operation 8, message file access 9 and operation setting 10 other than reception operation. Here, the message display operation means at least the rereading of message information that has already been stored.
This includes one of reading out the number of pieces of message information already stored and reading out the storage capacity of the RAM 7. Message file access includes at least one of protecting and erasing message information stored in RAM 7. Furthermore, operation settings include at least the setting of the scroll time of the display, the operation of transferring message information stored in RAM 7 to an external storage device, external printer, and external display device, and the backup operation of RAM 7 when replacing batteries. one of them
This includes one.

Note that the reception operation-related processing in step (6) is the highest priority interrupt processing, and in addition to the standby state in step (4), the message display operation, message file access, and operation in steps (8) to (10) are Even in the setting state, if a signal is received from the decoder 4, it is activated. Furthermore, all these operations are controlled by the timer in (11).

FIG. 9 is a flowchart showing the operation when performing reception operation related processing. First, in interrupt 1 of step (101),
When receiving a signal from the decoder 4 indicating that it has received its own selective calling number, it increments the counter AC that stores the number of receptions through (102) to (103), and also stores the count value AC in the register x. Write. In the next step (104), it is checked whether the value of the counter AC exceeds the number of message information that can be stored (in this example, it is assumed that a maximum of 8 pieces of message information can be stored). If it exceeds
In steps (105) to (108), M1 to M8 on the display section of FIG. 4 are blinked to indicate an overflow and the interrupt processing is terminated. If the storage capacity has not been overflowed, the first bit of the message information from the decoder is read in (109), and it is determined in (110) whether the message information continues. As a result, if the message information continues, the following information bits and check bits are calculated in steps (111) to (114).
After reading 30 bits and correcting errors, the message information is registered in RAM 7, and the flag MF _x indicating the presence or absence of message information is set to “1”.
Make it. Here, when the number of times the message information is registered in the RAM 7 increases and the storage capacity of the RAM 7 is exceeded, reading of the message information is stopped at that point.

When reading of the message information is completed in the step (110), a command is issued to the decoder 4 to stop sending signals in (115).
In the next step (116), it is checked whether or not a sound is being displayed, and if it is, the number of the message M _x currently displayed at that time is slid by one in (117). The corresponding number M _x+1 thus obtained is lit. Then, in the next step (118), the messages M ₁ to M _x that remain stored up to M _x are made to blink, and the interrupt processing ends. If the tone is not displayed in step (116), it is checked in step (119) whether any of the message display operation, message file access, and operation settings shown in FIG. 9 are being processed. As a result, if processing is in progress, M ₁ to M _x are blinked in step (118) to notify only that a signal has been received, thereby finishing the interrupt processing so that the above-mentioned processing can be continued. In step (116), if a sound is not being displayed or other processing operations are not in progress, the circle mark on the display section of Fig. 3 is lit in step (120).
CALL is displayed, and the next step (121) checks whether or not it is in memory mode. If it is memory mode, in step (118) M ₁ ~
Display the number of memorized message information by blinking M _x . If it is not in memory mode, in steps (122) to (125), to notify that the message information is the latest,
Light up M ₁ to display a message, start sounding and finish the process.

Figure 10 shows accumulated message information when the receiver is in standby mode after completing any of the processes related to reception, message display, message file access, and operation settings in Figure 8. This is a flowchart showing the operation for displaying the . In addition,
Interrupt 2 in step (201) is entered periodically when the computer is in the standby state. First, in step (202), it is checked whether or not a sound is being generated. As a result, if the call is not ringing, the value of the counter AC is checked in step (203) to see if there are any remaining calls. If there are no calls remaining, the interrupt operation is terminated, and if there are calls remaining, it is further checked in (204) whether or not the memory mode is set. As a result, if it is the memory mode, the interrupt ends at (205), and if it is not the memory mode, a message is displayed and a sound is started and the interrupt ends at (213) to (215).
Furthermore, if the sound is being sounded in the first step (202), the sound timer and reset switch are monitored in step (206). and,
If the sound is stopped by the timer or reset switch, the counter starts in step (209).
Count down the AC by one and check (210) whether there are any more calls remaining. As a result, if there are no calls left, the ringing and display are stopped in step (211), and the call returns to the standby state in step (212). Also, if there are any remaining calls, proceed to step (213).
~(215), a message is displayed, a sound is started, and the interruption is ended.

As is clear from the above description, according to the present invention, even if a new call is received while displaying one call or operating an additional function other than displaying a call, the displayed content is immediately displayed. By notifying the user that another call has been received without changing the display, the user can reliably complete the operation that is currently being displayed, and can easily confirm the new call. It is more reliable, convenient and easy to use as a multi-function display, and has a great lighting effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention, and FIGS. 2a, b, and c are examples of the overall signal, selective calling number, and message signal configurations applied to the embodiment of FIG. 1, respectively. Figure 3 showing
1 is a diagram showing an example of the LCD display in the embodiment of FIG. 1, FIG. 4 is a block diagram showing a specific configuration example of a decoder in the embodiment of FIG. FIG. 6 is a flowchart for explaining the operation of the decoder shown in FIG.
Figures 7a and b are respectively in Figure 6.
Figure 8, a diagram showing specific memory areas of the CPU data memory and external RAM, is similar to Figure 6.
FIG. 9 is a flowchart for explaining the basic operation of the CPU. FIG. 9 is a flowchart for explaining the operation when performing the reception operation related processing in FIG. 8. FIG. This is a flowchart for explaining display operations. In the figure, 1 is an antenna, 2 is a radio section, 3 is a waveform shaping circuit, 4 is a decoder, 5 is a P-ROM,
6 is CPU, 7 is RAM, 8 is LCD driver, 9 is
LCD, 10 is an amplifier, 11 is a speaker, 12 is a reset switch, 13 is a mode changeover switch,
14, 15, 16 are push switches, 17, 1
8 is a crystal oscillator, 4-1 is an SC detection circuit, 4-2
is a bit synchronization circuit, 4-3 is a coincidence circuit, 4-4 is a P-ROM reading/decoding circuit, and 4-5 is an oscillation/decoding circuit.
Frequency dividing circuit, 4-6 BS control circuit, 6-1 program memory, 6-2 program counter, 6
-3 is a control unit, 6-4 is a data bus, 6-5 is a data memory, 6-6 is an accumulator, 6-7 is an arithmetic unit, 6-8 is an oscillation circuit, 6-9 is a timer,
6-10, 6-13 to 6-16 are input/output ports,
6-11 and 6-12 are output ports.

Claims (1)

[Scope of Claims] 1. A wireless selective calling receiver with a display function that receives a message signal following its own selective calling signal, activates a calling alarm, and displays the message signal on a display using a calling display function. , the received message signal is divided into a maximum of N
(an integer of N≧2), a processing display means that is activated by a switch operation, processes the message information stored in the storage means, and displays the processing contents; means for determining whether or not the display is in progress, and when the display receives a new message signal while displaying, at least a part of the display is used while the process being displayed continues. A wireless selective calling receiver with a display function, characterized in that it has a function of notifying that a new message has been received. 2. In the wireless selective calling receiver with a display function as set forth in claim 1, the processing display means rereads, erases, protects, and stores message contents stored in the storage means. display of the number of messages stored in the storage means, display of storage capacity information of the storage means, and an external storage device for the messages stored in the storage means, an external printer,
1. A radio selective call receiver with a display function, characterized in that it is configured to include at least one means for transferring data to an external display device. 3. The radio selective calling receiver with display function as set forth in claim 1, wherein the function of notifying that the message signal has been received is a function of blinking at least a portion of the display. Wireless selective calling receiver with display function.