JPH0666725B2 - Individual selective call receiver with display function - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an individual selective call receiver with a display function.

[0002]

2. Description of the Related Art Conventionally, an individual selective call receiver with a display function of this kind receives an individual selective call signal and a display information signal sent by radio signals, and the contents of this information signal are stored in a data memory (described later). Thus, it is stored in the decoder section) and displayed on the display section (for example, LCD (liquid crystal display device)).

[0003]

In the above-mentioned conventional individual selective call receiver with display function, once the user confirms the information content, the information is often unnecessary in most cases. In other words, unnecessary information is stored in the data memory, so that there is a drawback in that the effective use of the data memory deteriorates.

An object of the present invention is to provide an individual selective call receiver with a display function, which improves the utilization efficiency of the data memory.

[0005]

In order to achieve the above object, an individual selective call receiver with a display function of the present invention receives a radio signal including a selective call signal and a first information signal, and performs the selective call. In the individual selective call receiver with a display function for displaying the content of the first information signal on the display unit after detecting the coincidence with the own selective call number based on the signal, it is different from the first information. An input means by which a user can arbitrarily input a second information signal; and the first and second
And a data memory storing the information signal, and the decoder section erases the first information signal stored in the data memory by storing the second information signal.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of an individual selective call receiver with a display function according to the present invention. Antenna 1
A radio section for demodulating the radio signal received by the antenna 1, a waveform shaping circuit for performing waveform shaping and digitizing the signal, and a detection of the selective call signal of its own by the digitized demodulated signal. And the control of each unit, and includes the decoder unit 4, the ringer drive circuit 7, and the ringer unit 6 which incorporate the above-mentioned data memory (not shown).
Are connected.

Further, the decoder section 4 includes a calling number storage section 5 which is a PROM in which a self-selected calling number is stored in advance, an electronic switch 8, a DC / DC converter 10, a clock oscillator 11, and the ringer stops ringing. A reset switch 12 for turning on, an input terminal 13 for the information signal m, an input switch 14 for the information signal m, and a display unit 15 are connected. Furthermore, the electronic switch 8 is connected to the power supply 9,
It has a function of supplying power to the radio unit 2, the waveform shaping circuit 3, the DC / DC converter 10, and the clock oscillator 11 based on the timing signal from the decoder unit 4.

FIG. 7 is a diagram showing the configuration of an input signal (denoted as a) to the decoder section 4, and FIG. 2 is a flow chart showing the operation of the decoder section 4. The operation of the paging receiver according to this embodiment will be described below with reference to these drawings.

First, it is assumed that the power supply 9 is on and the input switch 14 is off (process 1).
Next, the radio signal received via the antenna 1 is demodulated by the radio section 2 and becomes a digital signal a as shown in FIG. 7 in the waveform shaping circuit 3. When this signal a is input to the decoder unit 4, the decoder unit 4 establishes bit synchronization with the repeating pattern P of "1" and "0", and shifts to the detection of the frame synchronization signal SC that is subsequently transmitted. When the detection of the frame synchronization signal SC is confirmed (process 2), the decoder unit 4 reads the selective call number data from the call number storage unit 5 in which its own selective call number is previously stored, and the signal a The address signal A in FIG. When the coincidence is confirmed (process 3), the decoder unit 4 receives and decodes the information signal M continuously sent (process 4), and the information signal M (however, the identification bit is stored in the data memory). And the check bit are not included.), And the standby state for the stop signal E is set. When the decoder unit 4 detects the stop signal E (process 5), the ringer unit 6 operates via the ringer drive circuit 7. The ringer sound is stopped by operating the reset switch 12.

On the other hand, when the input switch 14 is turned on, the information signal m from the input terminal 13 is stored in the data memory, and at the same time, its contents are displayed on the display section 15.
In this case, the processing procedure is (processing 1), (processing 4), and (processing 5).

In the processing procedure described above, since the information signal M and the information signal m are stored in the data memory in the order in which they are input, whether the content displayed on the display unit 15 is the information signal M or not. In order to distinguish whether it is the information signal m or not, it is necessary to visually display the fact on the display unit 15.

This is because when the information signal M or m is stored in the data memory of the decoder unit 4, a judgment bit "1" or "0" of the information signal is added to the head of the information signal as shown in FIG. This is performed by determining this at the time of reading the information signal and issuing an instruction to the display unit 15. In the example shown in FIG. 3, in the case of the information signal M, the determination bit is “0”,
In the case of the information signal m, the determination bit is "1". Of course, the order may be reversed.

When an information signal (m in the example of FIG. 4) is newly input to a place where the capacity of the data memory is completely stored by the existing information signal as shown in FIG. 4, for example, in principle. It is assumed that the first information signal M is erased,
If all the already stored information signals are information signals m, they are erased on a first-come-first-served basis, and new information signals are input into the data memory.

FIG. 5 is a block diagram of another embodiment of the present invention. As is clear from the comparison with the embodiment shown in FIG. 1, the configuration is almost the same. The difference in configuration is that an information signal processing unit 16 is connected to the decoder unit 4 instead of the input switch 14 for the information signal m, and the information signal processing unit 16 includes two operation switches 1
2b and 12c are provided. The operation switch 12a connected to the decoder unit 4 has a function of selecting various modes in addition to the reset function of the reset switch 12 shown in FIG.

Generally, in a device in which various information signals are stored, such as the paging receiver according to the present invention, the user needs to select various functions such as reading, writing and confirmation of each information signal as needed. There is a nature. The embodiment shown in FIG. 5 shows an example in which such a function can be selected.

It is the above-mentioned operation switches 12a, 12b, 12c that perform this function selection, and correspond to each function as shown in FIG. That is, when the ringer is not ringing, the switch 12a is operated to set the device to the "mode selection" state, and when the switch 12a is further operated in this state, the above-mentioned data stored in the data memory is stored. The device is set in the "readout display mode 1" state in which the content of the information signal M is read out and displayed.
Alternatively, in the state of "mode selection", the switch 12
When the switch b is operated, the switch 12c is set to the "readout display mode 2" state in which the content of the information signal m is read out and displayed.
When is operated, the device is set to the state of "writing display mode" for inputting the information signal m. Further, in each display mode, by operating the switches 12b and 12c, six kinds of modes can be selected as shown in FIG. The meaning of each of these selected modes is as shown in Table 1.

[0018]

Next, the operation of the paging receiver according to the embodiment shown in FIG. 5 will be described. Since the operation is similar to that of the embodiment shown in FIG. 1, here, an information signal is written in the data memory, or Only the reading method and the display method of the information signal are limited.

As a method for the user to input the information signal m into the data memory, as shown in FIG. 6, external input (method) is used.
And there is an internal input (method). The former is used, for example, when a large amount of content is smoothly input using a programmable computer, and the latter can be input only by an individual selective call receiver with a display function and uses operation switches 12b and 12c. As a result, a line is displayed below the character input area as shown in FIG. 8, the switch 12b is used to search for a desired character, and when the desired character appears, the switch 12c is pressed to input the character, and the next character is input. It is possible to set the transition of the line to the input point. The information signal M and the information signal m are stored in the data memory whose storage location is divided into two by these input methods,
The data is read from the data memory by selecting the mode, and the display unit 1
Each information content is displayed in 5. Then, the mode in which the display content is selected is also visually displayed.

Finally, the configuration and operation of the decoder unit 4 will be described with reference to the detailed block diagram of the decoder unit 4 shown in FIG.

The decoder section 4 comprises a one-chip central processing unit (CPU), and peripheral devices such as ROM, RAM, and input / output ports are also included in this chip. A series of operation instructions as a decoder is written in the program memory 17. The content of the address designated by the program counter 18 is output from the program memory 17 to the control unit 19, and the control unit 19 sends a control signal CS to each unit according to this content. The program counter 18
Every time the content of the program memory 17 is sent to the control unit 19, the process normally advances by +1.

The interface between each external circuit and the data bus 24 is composed of an output port 20, an input port 21, an output port 22 and an input port 23. The output port 20 sends a sound signal to the ringer unit 6, the input port 21 reads the signal a from the waveform shaping circuit 3 or inputs a sound stop signal or an external information signal, and the output port 22 A read pulse is sent to the calling number storage unit 5, and the input port 23 reads the calling number data from the calling number storage unit 5. Further, the data bus 24 includes a program counter 18, a data memory 25, an accumulator 26, and an arithmetic unit (A
It is connected to the LU) 27 and transfers data.

The synchronizing clock necessary for reading the signal a from the waveform shaping circuit 3 is an external clock oscillator 11
The clock is supplied through the oscillator 28, the timer 29, the controller 19, the data memory 25, the data bus 24, and the input port 21.

The LCD control and drive circuit 30 is a circuit for displaying a specific one of the data (information signal) stored in the data memory 25 on the display section 15.

Further, the operation switch 12b shown in FIG.
The information signal processing unit 16 determines the respective switch states of 12c.
And the control unit 19 sends out a control signal CS for setting each mode shown in FIG. 6 based on the analysis result.

The input process of the information signal m will now be described. When the input switch 14 is turned on, the decoder section 4 operates as shown in FIG. 2, and the information signal m is input to the input port 21 as shown in FIG. After the determination bit “1” is added, it is stored in the data memory 25. On the other hand, when the information signal is read out, the program memory 17 determines whether the above-mentioned determination bit is "1" or "0" and issues a determination instruction from the control unit 19 to determine whether the information signal is M or m.
It is visually displayed on the display unit 15.

Further, regarding the embodiment shown in FIG. 5, since the storage location of the data memory 25 is instructed by the program memory 17 to be divided into two for the information signal M and the information signal m, the respective information is stored. A signal is input to each storage location. By performing such an input method, the information in the data memory is displayed on the display unit 15 according to the various modes selected by the combination of the operation of the operation switches without providing the above-described determination bit, and It is possible to visually display an instruction for determining which of the above-mentioned two storage locations the information belongs to.

Next, erasure of the information signal in the data memory 25 will be described. (1) In the case of the embodiment shown in FIG. 1, when a new information signal is input to a place where the capacity of the data memory 25 is completely stored by the existing information signal as shown in FIG. Of the decision bit “1” or “0” of the decision signal is deleted by the control unit 19, and the signal to which the decision bit “0” is added, that is, the information signal M is erased. When the signal added with 1 ″, that is, the information signal m, is erased on a first-come-first-served basis, and the program memory 17 instructs to input a new information signal. (2) In the case of the embodiment shown in FIG. 5, in this case, the control unit 19 is informed of which storage location of the above-mentioned two divided data memories the information signals M and m are respectively stored. It is given from the program memory 17. Therefore, the control unit 19 functions based on this information instead of the decision bit in the embodiment shown in FIG.

[0030]

As described above, according to the present invention, since the user can arbitrarily store information, the data memory can be effectively used, and the information signal M or the information signal m can be effectively used. Since the judgment of is also visually displayed, it is possible to provide an individual selective call receiver with a display function which can further improve the utilization efficiency of the data memory.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an individual selective call receiver with a display function according to the present invention.

FIG. 2 is a flowchart showing an operation of a decoder unit 4.

FIG. 3 is a diagram showing a state in which a determination bit is added to each of an information signal M and an information signal m and stored in a data memory.

FIG. 4 is a diagram showing a method of erasing an information signal from a data memory.

FIG. 5 is a block diagram of another embodiment of an individual selective call receiver with a display function according to the present invention.

FIG. 6 is a diagram showing functions of operation switches 12a, 12b, 12c.

FIG. 7 is a diagram showing a configuration of an input signal a to the decoder unit 4.

FIG. 8 is a diagram showing an internal input function.

9 is a detailed block diagram of the decoder unit 4. FIG.

[Explanation of symbols]

 1 antenna 2 radio part 3 waveform shaping circuit 4 decoder part 5 calling number storage part 6 ringer part 7 ringer drive circuit 8 electronic switch 9 power supply 10 DC / DC converter 11 clock oscillator 12 reset switch 12a, 12b, 12c operation switch 13 (information) Input terminal (for signal m) 14 Input switch (for information signal m) 15 Display unit 16 Information signal processing unit 17 Program memory 18 Program counter 19 Control unit 20,22 Output port 21,23 Input port 24 Data bus 25 Data memory 26 Accumulator 27 arithmetic unit (ALU) 28 oscillating unit 29 timer 30 LCD control and driving circuit M information signal (transmitted by wireless signal) m (user input) information signal

Claims (1)

[Claims] 1. A first information signal after receiving a radio signal including a selective calling signal and a first information signal, and detecting in the decoder unit a match with its own selective calling number based on the selective calling signal. In an individual selective call receiver with a display function for displaying the contents of the above on a display unit, an input means by which a user can arbitrarily input a second information signal different from the first information,
A data memory for storing the first and second information signals, wherein the decoder section erases the first information signal stored in the data memory by storing the second information signal. An individual selective call receiver with display function.