JPH037435A - Radio selective call receiver - Google Patents

Abstract

PURPOSE:To conduct test with a simple automatic inspection equipment by using an optical signal from the simple automatic inspection equipment only at the inspection to apply the power supply for a receiver. CONSTITUTION:A light detection window for an optical signal made incident from an inspection machine to a light-receiving means 1 is provided in a battery container section provided on a part of an enclosure of, e.g. a receiver. Then the battery cover of the battery housing section is used as an optional signal interruption means 2. A power switch 6 is kept tuned off as it is at the inspection and the battery cover is kept removed and the optical signal from the inspection machine is made incident on the incident window of the light-receiving means 1. The light-receiving means 1 converts the optical signal into an electric signal, the control means 3 processes the electric signal to output a control signal and the power switch 6 is turned on/off by the control signal. Then, for the inspection machine, the direct operation of the power switch 6 of the receiver main body is not required.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applied to a wireless selective calling receiver equipped with a wireless calling means, and particularly has a configuration that facilitates automatic testing of the receiver. The present invention relates to a wireless selective calling receiver.

〔overview〕

The present invention provides a wireless selective calling receiver equipped with a wireless calling means, in which the receiver can be powered on by an optical signal from an automatic testing machine only during testing, so that testing can be performed using a simple automatic testing machine. It has been made possible.

[Conventional technology]

Conventionally, in wireless selective calling receivers (hereinafter simply referred to as receivers) that are equipped with calling means such as wireless ringing, flashing indicator lights, and vibration, the power is turned on and off using a slide switch. This is done by manually operating mechanical switches such as

FIG. 5 shows a block diagram of a receiver according to the prior art. When the power switch 6 is turned on, current flows from the battery 7 and the receiver circuit 5 operates.

Further, when the power switch 6 is turned "off", the current of the battery 7 is cut off and the receiver circuit 5 is stopped.

[Problem that the invention seeks to solve]

It is expected that receivers will be mass-produced more and more in the future. Therefore, it is necessary to use automatic inspection machines to streamline production. However, the power switch of the receiver is not necessarily suitable for an inspection machine that performs automatic inspection.

The receiver switch has a small shape and its mounting position varies, which impairs the accuracy of the tester. Furthermore, there are many types of receivers, each with a different switch position and shape. For this reason, in order to handle many receivers with one tester, the tester is required to perform very complicated movements, making the tester expensive. Furthermore, since the receiver uses radio as a means of receiving information, it is highly susceptible to the effects of electromagnetic noise. For this reason, the inspection machine must also not emit electromagnetic noise.

As explained above, turn on the power switch of the receiver.
In order to perform ``off'' using an automatic inspection machine, the inspection machine must have very complicated movements and must take measures against electromagnetic noise, which is extremely difficult to implement.

SUMMARY OF THE INVENTION An object of the present invention is to provide a radio selective call receiver that can be tested with a simple automatic testing machine by eliminating the above-mentioned drawbacks.

[Means for solving problems]

The present invention provides a wireless selective calling receiver equipped with a wireless calling means, including a light receiving means for converting an optical signal into an electrical signal, an optical signal cutting means for cutting off an optical signal to the light receiving means, and a wireless selective calling receiver. A cell characterized by comprising a power switch means for turning on or off the power of the receiver using a control signal, and a control means for processing an electric signal from the light receiving means and outputting a control signal to the power switch means. do.

[Effect]

A photodetection window for an optical signal incident on the light receiving means from the inspection device is provided, for example, in a battery storage section provided in a part of the housing of the receiver. Then, the battery cover of the battery storage section is used as an optical signal cutoff means. That is, during normal use, the battery cover is covered, that is, the influence of ambient light is cut off, and the power is turned on and off using the power switch. At the time of inspection, the battery switch is left "off" and the battery cover is removed, and an optical signal is made to enter the entrance window of the light receiving means from the inspection machine. As a result, the light receiving means converts this optical signal into an electrical signal, the control means processes this electrical signal and outputs a control signal, and the power switch means turns on the power based on this control signal.
Turn it “off”.

Therefore, the tester does not need to directly operate the original power switch of the receiver, is not limited by the power switch, and can be easily constructed in terms of electrical and electromagnetic noise countermeasures and structure.

〔Example〕

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

FIG. 1 is a block diagram showing one embodiment of the present invention.

This embodiment includes a light receiving unit 1 as a light receiving unit that converts an optical signal S1 into an electrical signal (hereinafter simply referred to as a signal), and an optical signal cutting unit 2 that cuts off the optical signal S1 to the light receiving unit 1.
The switch circuit 4 connected in parallel to the original power switch 6 and the light receiving section 1 serve as power switch means for turning on or off the battery 7 as a power source for the receiver circuit 5 of the receiver using a control signal S9. A control unit 3 as a control means for processing a signal S2 of ing.

The feature of the present invention is that, in FIG. 1, a light receiving section 1, an optical signal cutoff means 2, a control section 3, and a switch circuit 4 are provided.

Next, the operation of this embodiment, including the details of the configuration, will be explained.

The light receiving section 1 is composed of a light receiving element such as a phototransistor or a photodiode, converts the optical signal s1 into a signal S2, and sends the signal S2 to the control section 3.

In order to avoid malfunctions, the control section 3 outputs the control signal S9 and operates the switch circuit 4 only when a predetermined signal is received within a predetermined time at a predetermined timing. Specifically, first, the optical signal S received by the light receiving section 1 is
1 becomes bright from dark, the timing is determined inside the control section 3, and the time is measured by a counter inside the control section 3. Only the signals that have entered within this time are judged and the switch circuit 4 is operated.

The probability of the optical signal S1 changing from dark to bright is usually high, and therefore malfunctions are likely to occur. Optical signal cutting means 2
is intended to prevent this by restricting the conditions of use.
Constructed without electrical connections.

In this way, by installing the switch circuit 4 operated by the optical signal S1 between the receiver circuit 5 and the battery 7, automatic inspection can be easily realized. Further, the power can be normally turned on and off using a manual switch 6.

The test switch 8 is turned "on" only during testing, and is normally "off", and is disposed inside the housing so that it cannot normally be operated.

Next, an example of the optical signal cutting means 2 is shown in FIG.
This will be explained with reference to and (C). Here, in Figure 2 (a
), r) and (C) are perspective views showing the appearance of the receiver. The external shape of the receiver includes a case body 51, a power switch operation section 52, a battery storage section 53 in which the battery 7 is housed, and a battery cover 54, and furthermore, the photodetector element 11 in the light receiving section 1 is exposed through the light entrance window. ing. The battery cover 54 is closed as shown in FIG. 2(C) except during receiver production, battery 7 replacement, and maintenance. When the battery cover 54 is removed, the battery storage section 53 is exposed, allowing the photodetection element 11 to detect an optical signal.

Therefore, as shown in FIG. 2(a), the optical signal can be received only when the battery cover 54 is removed, and when the battery cover 54 is closed as shown in FIG. 2(C), the optical signal can be received. Cannot receive signal.

As a result of the above, the optical signal cutoff means 2 for turning on and off the operation of the light receiving section 1 can be realized without electrical contact. The receiver is inspected by removing the battery cover 54 and placing the receiver in a place where external light is blocked.

Next, the detailed configuration and operation of this embodiment will be explained with reference to the right side of FIG. 3 and FIG. 4. Here, FIG. 3 is a circuit diagram, and FIG. 4 is a time chart showing its operation.

According to FIG. 3, the light receiving section 2 includes a photodetecting element 11 made of a phototransistor and a resistor 12, and the control section 3 includes a timer 31, inverters 32 and 37, AND gates 33 and 38, a capacitor 34, and a flip-flop. 35, 36, and 39, and the switch circuit 4 includes an NPN type semiconductor switch 41.

The optical signal S1 is converted from the optical signal S1 to the electrical signal S2 by the light receiving section 2.
, and is manually operated by the control section 3.

As shown in FIG. 4, when the optical signal S1 changes from dark to bright,
The signal S2 rises from the L level to the H level, and the timer 31 starts. The timer 31 runs from tl to t2
During this period, a signal S4 of H level is output. tl is the optical signal S
1 is the timing when it goes from dark to light. Furthermore, even if the optical signal S1 becomes clear again between tl and t2, the timer 31 does not restart between tl and t2.

The signal S2 outputted from the light receiving section 1 becomes an electric signal S3 whose L level and H level are inverted by an inverter 32 in addition to a timer 31, and is input to an AND gate 33. Further, the signal S4 output from the timer 31 is also input to the AND gate 33.

The AND gate 33 uses the signal S3 only between tl and t2.
is output as a signal S5. The output signal S5 is input to the flip-flop 35. Also, and gate 3
A capacitor 34 connected to the output of S3 cleans the signal S5 and limits high speed operation.

Flip-flops 35 and 36, inverter 37, and AND gate 38 count falling edges of signal s5. Note that the flip-flops 35 and 36
is reversed at the falling edge. When the falling edge of the signal s5 is counted twice, the signal S7 is output from the flip-flop 36.
is input to the AND gate 38, and the AND gate 38 outputs a signal S8.

Also, from timing t1 to t2 when the timer 31 outputs
During this period, if the falling edge occurs less than twice, the signal S4 from the timer 31 becomes L level at timing t2, and the flip-flops 35 and 36 are reset. When the reset is applied, both the Q output signal S6 and the Q2 output signal S7 return to the initial state of L level, and wait for new human power.

The signal S8 from the AND gate 38 is sent to the flip-flop 39
When inputted manually, the signal S9 of the Q3 output of the flip-flop 39 is inverted. Signal S from flip-flop 39
9 is inverted and becomes H level, the N P of the switch circuit 4
N-type semiconductor switch 41 is turned on. Also, next,
When the signal S8 is inputted to the flip-flop 39 again,
The output of the flip-flop 39 is inverted, the signal S9 becomes L level, and the N P N-type semiconductor switch 41 is turned off.

〔Effect of the invention〕

As explained above, the present invention enables automatic inspection of a radio selective call receiver by using an optical signal to turn off the power supply of the radio selective call receiver.
By making it possible to turn on and off,
The automatic inspection machine eliminates the need to operate the battery switch of the radio selective call receiver. For this reason, automatic inspection machines do not require complicated movements, and are simple both electrically and structurally.
Furthermore, since it is electrically and structurally simple, countermeasures against electromagnetic noise are facilitated, and the receiver can be tested using a simple automatic testing machine.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIGS. 2(a), 2(b) and 2(C) are perspective views showing the external appearance. FIG. 3 is a circuit diagram showing an example of the specific circuit. FIG. 4 is a timing chart showing the operation of FIG. 3. FIG. 5 is a block diagram showing a conventional example. DESCRIPTION OF SYMBOLS 1... Light receiving part, 2... Optical signal cutting means, 3...
Control unit, 4...-switch circuit, 5... receiver circuit,
6...Power switch, 7...Battery, 8...Inspection switch, 11...Photodetection element, 12...Resistor, 3
1...Timer, 32.37...Inverter, 33
．． 38...AND gate, 34...Capacitor, 3
5.36.39...Flip-flop, 41...N
PN type semiconductor switch, 51... Housing, 52... Power switch operating section, 53... Battery storage section, 54...
Battery cover, Sl...light signal, 82-S8...signal, S
9... Control signal, 310... Power supply current.

Claims (1)

[Claims] 1. A wireless selective calling receiver equipped with a wireless calling means, comprising: a light receiving means for converting an optical signal into an electrical signal; an optical signal cutting means for cutting off an optical signal to the light receiving means; A power switch means for turning on or off the power of the radio selective calling receiver using a control signal, and a control means for processing an electrical signal from the light receiving means and outputting a control signal to the power switch means. A wireless selective calling receiver characterized by: