JPH0799682A - Selective radio call receiver - Google Patents

Abstract

PURPOSE:To easily stop the report of a pager and to improve operability. CONSTITUTION:When a hand is brought into contact with a chain clip 36, a human body becomes an antenna and gathers surrounding noise. The noise is rectified in a touch sense circuit 40 and pulses provided with a prescribed pulse width are outputted. The pulses outputted from the touch sense circuit 40 are supplied through a switching detection circuit 17 to a signal processing part 14. Thus, the signal processing part 14 stops the driving of a motor driving circuit 20 and thus, a motor 21 is stopped and the report is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective calling receiver, and more particularly, to a radio selective calling receiver having a chain clip attached to a user's clothes or the like to prevent separation.

[0002]

2. Description of the Related Art Recently, a radio selective call receiver (hereinafter referred to as a pager), which has been popularly referred to as a "pager", is always carried by a person and sends a selective call signal in an emergency or the like. The use of is becoming popular. Some of the pagers include a buzzer sound for notifying that a call has been made, a pager for vibrating the pager to notify the user, and a pager having both notification modes. Further, there is a device that automatically stops the notification when a predetermined time has elapsed after the notification started. However, if the notification is automatically stopped after the lapse of a predetermined time, the notification may be stopped without the user noticing that there is a call, so the user may switch the notification by operating the switch. Those that stop are often used.

FIG. 6 is a block diagram of a conventional pager. The conventional pager includes a receiving antenna 11 for receiving a selective calling signal and a receiving unit 1 for demodulating the received selective calling signal.
2. Determining whether or not the selective call signal calls the own pager, and if so, the signal decoder 13 that outputs the call signal to the signal processing unit, the predetermined pager's own pager EE that stores the identification number
A signal control unit 1 for displaying the message in the selective call signal from the PROM 15 and the signal decoder 13 on the liquid crystal display and controlling the notification that the user has called.
4. A switch 16 for stopping the notification and switching the notification means, a switching detection circuit 17 for detecting the depression of the switch 16, and a ringing sound for outputting a signal to the speaker to notify that the pager user has called. Generation circuit 18, speaker 19 controlled by the sound generation circuit 18 to output a buzzer sound, motor drive circuit 20 for generating vibration in the motor to notify the pager user that a call has been made, and this motor drive circuit The motor 21 is controlled by 20 and rotates.

The switch 16 is a self-reset type switch that is turned on when pushed by hand and turned off when released, and when a switch 16 is turned on when a call is not being issued, a buzzer sound is given each time the switch 16 is turned on. It is possible to switch which mode of notification by vibration, and to stop the notification by turning on during notification of a call. During the call notification, the notification is continued unless the switch 16 is turned on. In addition, some conventional pagers have a chain clip attached to a user's clothes or the like to prevent the pager from being detached. This chain clip has a clip attached to the tip of the chain, and a part of the clothes is sandwiched between the clips to prevent the chain from coming off.

[0005]

However, when the pager receives a call and the user notices the notification and tries to stop the notification, the user carries the pager in a pocket, for example, and carries it. If so, you must put your hand in your pocket to find a switch to stop the alert. This is a very troublesome task when riding on a crowded train, and makes usability of the pager extremely poor. In addition, the buzzer sound or vibration for notification may be annoying to other people, and there is a problem that it takes time to stop the notification in a hurry to stop the notification. The present invention has been made in view of such a situation, and when the pager receives a call and the user notices the notification and tries to stop the notification, it provides a means for more easily stopping the notification and provides usability of the pager. The purpose is to improve.

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 provides a metal chain clip attached to a radio selective call receiver main body and a part of the chain clip. A detection circuit that detects when the user touches and a notification circuit that stops the notification when the detection circuit detects contact of the hand with the chain clip during notification. According to the invention of claim 2, in the invention of claim 1, when the notification is not being made in any of a plurality of notification modes,
The notification mode is changed when the chain clip is touched by the hand. According to a third aspect of the present invention, in the first or second aspect of the present invention, a control circuit is provided for stopping the notification by either operating the switch or touching the chain clip with a hand. According to a fourth aspect of the present invention, in the first to third aspects of the present invention, a timer circuit that sends a pulse signal for a predetermined period by touching the chain clip with a hand is provided. According to a fifth aspect of the invention, in the fourth aspect of the invention, ambient noise is detected to charge the capacitor, and when the charging voltage reaches a predetermined value, notification is given, and when the chain clip is touched by the hand, the capacitor is charged. It is designed to discharge the voltage.

[0007]

According to the first aspect of the invention, when a part of the chain clip is touched by the hand, it is detected and the notification is stopped. In the invention of claim 2, the notification mode is changed when the chain clip is touched by the hand when the notification is not being issued in any of the plurality of notification modes. According to the third aspect of the present invention, the notification is stopped by either operating the notification stop switch or touching the chain clip with the hand. According to the fourth aspect of the present invention, the pulse signal is transmitted for a predetermined period by the hand contact with the chain clip. According to the invention of claim 5, the charging voltage charged in the capacitor is discharged during the operation of the timer circuit.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a pager according to the present invention.
A liquid crystal display 31 is provided on the front surface of the cabinet 30, and a message included in the received selective call signal and a preset time can be displayed. Reference numeral 32 is an operation button used for re-displaying a message received in the past and setting the time. By turning on the power switch 33, the pager becomes ready to receive the selective call signal,
The LED 34 blinks during the notification of the call and the buzzer sound is output from the speaker inside the speaker hole 35 when the buzzer sound is selected as the notification mode. The chain clip 36 is made of metal, and a metal fitting 36a is connected to the tip of the chain side. The metal fitting 36a is inserted into the cabinet 30 and connected to the pager.

FIG. 2 shows a block diagram of the pager shown in FIG. 1, and the same components as those of the conventional example shown in FIG. 6 are designated by the same reference numerals. The pager according to this embodiment has the same receiving antenna 11, receiving section 12, signal decoder 13, signal processing section 14, and EEPRO as in the conventional example shown in FIG.
M15, switch 16, switching detection circuit 17, sound generation circuit 18, speaker 19, motor drive circuit 20,
Motor chain 21 and metal chain clip 3
6. A touch sensing circuit 40 for detecting that the chain clip 36 is touched by a hand is provided.

When the chain clip 36 is touched by the hand, the touch sense circuit 40 receives the noise voltage component as the human body serves as an antenna and the collected noise voltage component is input through the chain clip 40. It is possible to detect that the chain clip 36 is touched by the hand by detecting the voltage amplitude after the rectification. FIG. 3 is a circuit diagram showing the internal configuration of the switching detection circuit 17 shown in FIG. 2. The output signals of the inverter 17c, the OR circuit 17d, and the OR circuit 17d whose input side is pulled up to the power supply level by the pull-up resistor 17b. It is composed of a detection circuit 17a for detecting. For example, a voltage of 5V is applied to the power supply line and the switch 1
When 6 is not turned on, 5V is applied to the inverter 17c.
(“1” level signal) is input. When the switch 16 is turned on, a voltage drop occurs in the pull-up resistor 17b, and 0V (a "0" level signal) is input to the inverter circuit 17c. The inverter circuit 17c inverts the input signal and outputs it.

On the other hand, the touch sense circuit 40 outputs a signal of "1" level when the chain clip 36 is touched by the hand, and outputs a signal of "0" level when the chain clip 36 is not touched by the hand. Output of inverter 17c and touch sense circuit 4
The output of 0 is input to the OR circuit 17d, and the OR circuit 17d
The d outputs a "1" level signal when either or both of the two inputs are at a "1" level, and outputs a "0" level signal in other cases.

FIG. 4 is a view showing a cross section of a connecting portion between the cabinet 30 and the metal fitting 36a shown in FIG. The cabinet 30 is composed of a cabinet cover 30a and a cabinet case 30b, and a printed circuit board 30d on which each circuit shown in FIG. 2 is mounted is housed inside. The metal fitting 36a connected to the chain clip 36 is inserted between the cabinet cover 30a and the cabinet case 30b, and is fixed by the pin 30c.

The printed circuit board 30d and the metal fitting 36a are in contact with each other. At the contact portion on the printed circuit board 30d, the chain clip 36 is connected to the touch sense circuit 40 by the copper foil pattern a electrically connected to the touch sense circuit 40 and the metal fitting 36a. It is electrically connected to 40. The pager according to the present embodiment is used, for example, in a pocket, and at that time, the edge of the pocket is sandwiched between the clip portions of the chain clip 112 shown in FIG.

FIG. 5 is a circuit diagram showing the internal structure of the touch sensing circuit 40, in which the chain clip 36 has the input terminal 4
0a, and the output terminal 40b is connected to the OR circuit 17d. The inside is a capacitor 40
c, 40h, power supplies 40f, 40j, 40k, diode 40d, transistor 40i, comparator 40m, D
Flip-flops 40n and 40p, a delay circuit 40q,
It is composed of resistors 40e and 40g. And
The power supply 40f is set to a value equal to the forward voltage of the diode 40d, and the sum of the voltage generated by the diode 40d in the capacitor 40h and the voltage of the power supply 40j is slightly higher than the voltage of the power supply 40k. In addition, the voltages of the power supply 40k and the power supply 40j are determined. The comparator 40m sends out a signal of "1" level when the voltage supplied via the power supply 40j becomes higher than the voltage of the power supply 40k. The power supply 40f is provided to apply a bias voltage to the diode 40d so that the capacitor 40h can be charged even with a minute voltage, and the power supply 40j is used for the comparator 40m.
Are added for stable input signal comparison.

Next, the operation of the pager according to this embodiment will be described with reference to FIGS. First, when the power switch 33 shown in FIG. 1 is turned on, the signal processing unit 14 causes the EEPR to operate.
It reads the identification number of its own pager from the OM 15 and outputs the identification number to the signal decoder 13. Signal decoder 1
3 stores the identification number input from the memory signal processing unit 14 provided therein. By the way, when the switch 16 is turned on or the chain clip 36 is manually touched when the call is not being notified, the switching detection circuit 17 detects it and reports it to the signal processing unit 14. The signal processing unit 14 switches the call notification mode each time there is this report. Here, it is assumed that the notification mode is set to the notification by the buzzer sound.

When the receiving antenna 11 receives the selective call signal, the signal is demodulated by the receiving section 12 and then input to the signal decoder 13. The signal decoder 13 compares the identification number of the self pager stored in the internal memory with the identification number included in the received selective call signal to determine whether the self pager is called. . The signal decoder 13 does nothing unless the self pager is called, and if the self pager is called, outputs the received selective call signal to the signal processing unit 14.

Upon receiving the selective calling signal, the signal processing unit 14 displays the message (telephone number, message, etc.) of the selective calling signal on the liquid crystal display 31 shown in FIG. As a notification, the LED 34 shown in FIG. 1 is blinked to instruct the sound generation circuit 18 to output a buzzer sound. When the sound generation circuit 18 is instructed to output the buzzer sound, it controls the speaker 19 to output the buzzer sound. When the pager user notices the buzzer sound that informs that there is a call and wants to stop the buzzer sound, the chain clip 3 attached to the edge of the pocket 3
Touch 6

As a result, the human body serves as an antenna to collect ambient noise, which is input terminal 40 as shown in FIG.
It is supplied to the diode 40d via a and the capacitor 40c. Since the bias voltage of the forward voltage is supplied to the diode 40d from the power supply 40f, even if the forward component of noise is a minute voltage, the diode 40d
And the capacitor 40h is charged through the resistor 40g. However, the reverse component of the diode of the noise is cut off by the diode 40d and does not charge the capacitor 40h.

The voltage charged in the capacitor 40h is added to the voltage of the power source 40j, and when it becomes higher than the voltage of the power source 40k, the comparator 40m generates an output signal of "1" level and the flip-flop 40n outputs. Since it is supplied to the clock input terminal, a "1" level signal is sent from the Q output terminal of the flip-flop 40n. The signal is supplied to the clock input terminal of the flip-flop 40p and a "1" level signal is output from the Q output terminal thereof. As a result, the transistor 40i is turned on,
Since the capacitor 40h is short-circuited, the comparator 40h
The output of n becomes "0" level.

The signal output from the Q output terminal of the flip-flop 40p is delayed by the delay circuit 40q for a predetermined time to reset the flip-flop 40p and the flip-flop 40n. Therefore chain clip 3
A signal of "1" level is transmitted from the output terminal 40b for a predetermined time after touching 6 with a hand. Further, as described above, when the notification is not in progress, the notification mode is changed by touching the chain clip 36 or operating the switch 16.

As a result, the touch sensing circuit 40 detects that the chain clip 36 is touched by the hand and outputs a signal of "1" level to the switching circuit 17, so that a request to stop the notification is issued via the switching circuit 17. The received signal processing unit 14 instructs the sound generation circuit 18 to stop the notification.

The present invention can also be applied to a pager which has a plurality of identification numbers of its own pager and changes the notification sound for each called identification number so that the user can know who called the pager. Needless to say.

[0023]

As described above, the invention of claim 1 is
Since the notification is stopped when a part of the chain clip is touched by the hand, there is an effect that the notification can be stopped easily and the handling becomes easy. According to the invention of claim 2, the notification mode is changed when the chain clip is touched by the hand when the notification mode is not in effect. Therefore, the notification mode can be arbitrarily determined. According to the invention of claim 3, the notification can be stopped by either operating the notification stop switch or touching the chain clip with the hand, so that there is an advantage that the degree of freedom in operation is high. According to the invention of claim 4, since the timer circuit for transmitting the pulse signal for a predetermined period by the hand contact with the chain clip is provided,
A signal for stopping the notification is transmitted only for the required period. Claim 5
According to the invention of (1), the capacitor is charged by the hand contact with the chain clip, and when the charging voltage becomes equal to or higher than the predetermined value, the notification is stopped, and the capacitor is discharged thereby, so that the next operation can be prepared.

[Brief description of drawings]

FIG. 1 is a perspective view of an apparatus to which the present invention has been applied.

FIG. 2 is a block diagram showing an internal configuration of the apparatus shown in FIG.

FIG. 3 is a circuit diagram showing an internal configuration of the switching circuit of FIG.

4 is a cross-sectional view of the device of FIG.

5 is a circuit diagram showing an internal configuration of the touch sense circuit of FIG.

FIG. 6 is a block diagram showing an example of a conventional device.

[Explanation of symbols]

11 ... Receiving antenna, 12 ... Receiving part, 13 ... Signal decoder, 14 ... Signal processing part, 15 ... EEPROM, 16 ... Switch, 17 ... Switching detection circuit, 18 ... Sound generation circuit, 19 ... Speaker, 20 ... Motor Drive circuit, 21 ...
Motor, 40 ... Touch sense circuit.

Claims (5)

[Claims] 1. A radio selective calling receiver having a signal processing unit which gives a notification for calling when a selection signal is received and stops the notification by a switch operation. One end of the radio selective calling receiver is attached to a main body of the radio selective calling receiver. A chain clip, which has a clip at the other end, is made entirely of metal, and a detection circuit that detects when a part of the chain clip is touched by the hand is provided. The radio selective calling receiver, wherein the signal notifying unit stops the notification when the signal is detected. 2. The notification system according to claim 1, wherein a plurality of notification modes are provided, and the notification mode is changed when a hand touches the chain clip when any of the plurality of notification modes is not being reported. Radio selective call receiver. 3. The radio selective call receiver according to claim 1 or 2, further comprising a control circuit for stopping the notification by either operating a switch or touching a chain clip with a hand. 4. The radio selective call receiver according to claim 1, further comprising a timer circuit that sends a pulse signal for a predetermined period when a chain clip comes into contact with a hand. 5. The detection circuit according to claim 4, which detects ambient noise when the chain clip is touched by a hand and charges the capacitor, and stops the notification when the charging voltage exceeds a predetermined value during the notification. A radio selective calling receiver, which is provided with a control circuit for causing the timer circuit to discharge a capacitor charging voltage when the circuit operates.