JPH05191334A - Vibration selective call portable receiver - Google Patents

Abstract

PURPOSE:To obtain the vibration selective call portable receiver controlling a call vibration signal with its pulse motor. CONSTITUTION:A vibrator consists of a motor driver 19 and a pulse motor 20 and the motor driver 19 has a transistor(TR) drive circuit. Furthermore, since the motor driver 19 gives pulse drive signals whose clock period is gradually made short to TRs 34a, 34b, 34c, 34d sequentially, stator coils 31a, 31b, 31c, 31d integrated in the pulse motor 20 receive a voltage sequentially. Thus, a sufficient torque is given to start a permanent magnet 30 and it is possible to vibrate the vibrator in a very small amplitude upon the receipt of a call signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration selective calling portable receiver, and more particularly to a vibration selective calling portable receiver in which vibration gradually increases with the passage of time from the reception of a calling signal.

[0002]

2. Description of the Related Art A so-called pager service for wirelessly transmitting a telephone call or a message to a user who is out and about is widely used. Such a portable receiver is required to be small and lightweight because the user always carries it. Therefore, the method of calling the user needs to be a simple method. A conventional general portable receiver uses a method of transmitting a call to a user by generating a ringing sound or a ringing vibration.
Among them, the portable receiver using the ringing vibration has an advantage that only the person himself / herself can be called without giving noise or the like to the surroundings due to minute vibration.

Such a vibration selective calling portable receiver is
When the calling signal is received, the DC motor is driven by a predetermined drive circuit, and the calling is performed with a predetermined constant vibration amount from the time of calling.

[0004]

Since the conventional portable receiver uses a DC motor, the ringing vibration has been set in advance to a large vibration amount that facilitates the vibration operation. However, if the ringing vibration at the time of reception is large as in the past,
The user is suddenly subjected to a large vibration, which may cause noise and the like to the surroundings. Therefore, it is preferable to give and convey a vibration to the user, which gradually increases with time from the time when the call is received. That is,
It was necessary to control and generate the ringing vibration of the portable receiver, especially a minute vibration.

Therefore, in such a portable receiver, it is necessary to control the rotation speed of the DC motor in the vibrator in order to control the ringing vibration. For that purpose, a method of changing the drive voltage of the DC motor is adopted. Has been done.

However, in order to call the user with a very small vibration by the above-mentioned control method, that is, in order to start a normal DC motor at an extremely low speed, an extremely low voltage is applied to the motor. Since the driving force is insufficient, there is a problem that a starting failure occurs or the starting characteristic is not linear.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a vibration selective calling portable receiver capable of easily starting a motor at a very low speed when calling a user with a very small vibration. To provide.

[0008]

In order to solve the above-mentioned problems, a vibration selective calling portable receiver according to the present invention is a vibrating pager reception that performs a calling operation by vibrating a vibrator when a calling signal is received. In the machine, the vibrator includes a pulse motor that serves as a vibration source, and a motor driver that drives the pulse motor by outputting a pulse drive signal whose pulse cycle is gradually shortened with the passage of time from the time of receiving the calling signal. A pulse drive signal is output, in which the rotation speed of the pulse motor gradually increases with time.

[0009]

In the vibration selective calling portable receiver of the present invention constructed as described above, the motor driver outputs a pulse driving signal for gradually increasing the motor rotation speed with the lapse of time from the time of receiving the calling signal. Therefore, it has a sufficient torque, extremely low speed starting becomes extremely easy, and the vibrator can make extremely small vibrations when receiving the calling signal.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the portable receiver includes an antenna 10 for receiving a calling radio wave, the received signal is amplified to a predetermined level by an amplifier 11, and a waveform shaper 12 performs desired waveform shaping. This received signal is further converted into a calling code signal by the decoder 13 and compared with the ID code of the receiver stored in the memory, in the embodiment, the P-ROM 14, and when the two match, the calling signal is supplied to the CPU 15. To do. Also,
This reception signal has a telephone number or calling code data as required, and when the calling signals match, these data can be sent to the CPU 15. The code data is temporarily recorded in the memory 16, and these calling messages are displayed on the display 17 of the receiver as is well known.

In the present embodiment, the portable receiver can be called by an oscillating sound from the speaker 18 or a vibration calling by a combination of the motor driver 19 and the pulse motor 20, as required. These can be selected. Power on / off of the portable receiver, mode switching, and the like are controlled by a control signal from the operation unit 21.

A feature of the present invention is that the motor is a pulse motor 20, and the motor driver 1
The vibrator formed by the combination of 9 and the pulse motor 20 gives a weak vibration in the initial stage of calling and gradually increases this vibration, which causes the user to give a noise and the like to the surroundings by a minute vibration. That is, the call can be known without any trouble, and when the minute vibration is not noticed, the call can be easily detected by the subsequent increase in vibration.

A more specific embodiment of the motor driver 19 and the pulse motor 20 is shown in FIG. As is clear from the figure, the pulse motor has permanent magnets 30 and 4
Includes pole stator coils 31a, 31b, 31c, 31d.

In the embodiment, the motor driver 19 includes the stator coils 31a, 31b, 31c,
Transistor 34 for supplying drive current to 31d
a, 34b, 34c, 34d, each base resistance 35
The rotation speed of the pulse motor 20 can be controlled according to the clock cycle applied from a, 35b, 35c, and 35d.

The motor driver 19 outputs a clock signal of a predetermined low frequency in response to the input of a trigger signal applied from the CPU 15, and a self-propelled variable frequency clock generator which gradually shortens this clock cycle. Built-in.

Therefore, when there is a call, in the initial stage of the oscillation, as shown in FIG. 3, low-frequency clock signals T1, T2 having a long clock signal period t _s .
T3 and T4 are sequentially output with a predetermined drive pulse width t _p , and this is supplied to the motor driver 19 as one cycle. Further, as shown in FIG. 4, each clock signal in which only this period t _s is sequentially shortened. Can be supplied to the motor driver 19.

Further, clock signals T1, T2, T supplied to the motor driver 19 for driving the pulse motor.
3, T4 are output according to the flow shown in FIG. First, the cycle index counter CNT is initialized with the number of cycles indicating how many cycles of the same cycle of operation (same vibration intensity) are performed (S10). Next, the clock signals T1, T2, T3, T4 are all held at 1 (OFF state) (S11). Further, the value of the clock signal period t _s is set to a large value (n) in advance (S
12).

Therefore, when the call is received, the clock signal T
1 changes from 1 to 0 (ON state) (S13), the clock signal T1 maintains the state of 0 at a predetermined drive pulse width t _p , and the pulse motor starts to start. And
When the drive pulse width t _p has passed a predetermined value (S14), the clock signal T1 returns to 1 (OFF state) (S1).
5) The one-phase driving of the pulse motor is completed.

Next, when the period t _s from the output of the clock signal T1 to the output of the clock signal T2 has passed n (S16), the clock signal T2 is driven for driving the next phase.
Changes from 1 to 0 (S17), the clock signal T2 maintains the state of 0 at the predetermined drive pulse width t _p in the same manner as described above, and after this time (S18) returns to 1 (OFF state). (S19).

Similarly, the above-described processing and judgment are repeated to set the clock signals T3 and T4 to a cycle t _s between constant clock signals.
The pulse motor is driven at an extremely low speed for each clock signal by sequentially changing to 0 (S20 to S25). Then, the clock signal T4 to (S26) When the driving pulse width t _p of the fourth phase is determined to become a predetermined value 1
Returning to the (OFF state) (S27), the cycle index counter CNT counts the number of cycle completions until the cycle index counter CNT determines that the cycle t _s has passed n (S28) after the clock signal T4 changes from 0 to 1. It is determined whether or not has reached a predetermined set value (S29).

The cycle index counter CNT counts the above cycle (S) until the counted number of cycles reaches a predetermined number of cycles which has been initialized, for example, 5 cycles.
13 to S28) is repeated, the pulse motor continues to be driven at an extremely low speed. Therefore, the vibration of the vibrator in this cycle is stable and extremely small.

When it is judged that the initial set number of cycles, for example, 5 cycles have been repeated (S29),
The value of the clock signal cycle t _s is decremented from n to n-1 (S30), and the clock signals T1, T2, T3, T4 are sequentially turned on in the same manner as above with a shorter output interval until a predetermined number of cycles. This operation is repeated (S13-
S29). At this time, the driving speed of the pulse motor is faster than before, and thus the vibration of the vibrator is also large.

As described above, the value of the cycle t _s is decremented (S30) every time it is judged that the number of recording cycles has reached the initial setting cycle of the cycle index counter CNT, for example, 5 cycles (S29), and the cycle is repeated. _ts
The above flow is repeated at a cycle t _{s in} which the output interval is sequentially shortened (S13 to S30) until the value of (1) reaches a preset minimum value (S31). As a result, the driving speed of the pulse motor gradually increases, and the vibration of the vibrator can gradually shift from the very small vibration to the large vibration.

When it is determined that the clock signal period t _s has reached the preset minimum value (S31),
The clock signals T1, T2, T3, T4 are all held at 1 (S32), the driving of the pulse motor is stopped, and the driving operation of the pulse motor is completed. Therefore, the series of vibration operations of the vibrator are also stopped.

[0025]

As described above, in the portable receiver for selective vibration calling according to the present invention, the pulse motor is used as the motor of the vibrator, and the motor driver gradually shortens the pulse cycle with the lapse of time after receiving the calling signal. Since the pulse drive signal is output, the rotation speed of the pulse motor has a sufficient torque, and extremely low speed starting becomes extremely easy.

Further, the vibrator has become able to obtain a wide range of vibrations from very small vibrations to large vibrations.

[Brief description of drawings]

FIG. 1 is a drive circuit block diagram showing a preferred embodiment of a vibration selective calling portable receiver according to the present invention.

FIG. 2 is a circuit diagram showing a vibrator according to the present embodiment.

FIG. 3 is a timing chart of each clock signal supplied to each transistor of the motor driver in order to start the pulse motor at a low speed during reception.

FIG. 4 is a timing chart of each clock signal supplied to each transistor of the motor driver in order to rotate the pulse motor at high speed over time.

FIG. 5 is an output flowchart of each clock signal supplied to the motor driver.

[Explanation of symbols]

 19 motor driver 20 pulse motor 30 permanent magnets 31a, 31b, 31c stator coil 31d stator coil 34a, 34b, 34c, 34d transistor

Claims (1)

[Claims] 1. A vibration selective calling portable receiver that performs a calling operation by vibrating a vibrator when a calling signal is received, wherein the vibrator has a pulse motor as a vibration source, and a time passage from the time of receiving the calling signal. A motor driver that outputs a pulse drive signal whose pulse cycle is gradually shortened to drive the pulse motor, and outputs a pulse drive signal in which the rotation speed of the pulse motor gradually increases with time. Vibration selective call portable receiver.