JPH0479431A - Selective call receiver - Google Patents

Abstract

PURPOSE:To confirm that not only a signal processing part but also a radio reception part is normally operated by displaying data with the brightness corresponding to the supply current value of the signal processing part. CONSTITUTION:A signal processing part 3 is provided with a means which repeats the first state where the current in the high level is requested from a battery 9 to process the signal from a radio reception part 2 and the second state where the current in the low level is requested from the battery 9 to temporarily stop this processing, and a pulse converting part 10 is provided which interrupts the current from the battery 9. A rectifying part 11 which rectifies the output of this pulse converting part 10 to give it to the signal processing part 3 and generates a signal to interrupt the pulse converting part 10 in a duty ratio corresponding to the value of this rectified current and an operation state display device 12 which changes the brightness of display in accordance with the duty ratio shown by the output of the pulse converting part 10 are provided. Thus, it is confirmed whether not only the signal processing part 3 but also the radio reception part 2 is normally operated or not.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operating state display means for a selective call receiver.

〔overview〕

The present invention, in the operating state display means of a selective call receiver, displays various operating states without any special operation and with low power consumption by displaying the brightness according to the power supply current of the signal processing section. It has been made possible to do so.

[Conventional technology]

Conventionally, the operating status display of this type of selective call receiver simply indicates whether the receiver is on or off depending on the position of the power switch, or it displays numbers or numbers at the same time as the selective call receiver rings. In a receiver having a display for displaying characters, rP[1lIIERD
The operating status was confirmed by constantly displaying "NJ" or by operating a display control switch to make various displays appear on the display.

[Problem to be solved by the invention]

In conventional systems like this, the status is indicated by the position of the power switch, so the only way to confirm whether the receiver is actually working is to turn the power switch on again and hear the alarm sound when the power is turned on. It was necessary to confirm that it occurred normally. In addition, rPOWE can be used on displays such as LCDs.
RONJ and other display devices have the disadvantage that the current consumption of the receiver increases and the usage time of the receiver decreases because the display is displayed all the time. Further, in the case where the display unit displays information only when necessary, there is a drawback that a display control switch must be operated.

The present invention aims to eliminate such drawbacks by checking whether or not the wireless receiving section as well as the signal processing section is operating normally.
S! It is an object of the present invention to provide a selective calling receiver having means capable of recognizing the present invention.

[Means to solve the problem]

The present invention includes a radio receiving section that demodulates an incoming harmonic signal, and a signal processing that detects whether a calling number included in the signal demodulated by this radio receiving section matches a calling number unique to the own device. In the selective calling receiver, the signal processing section requests a high level current from the battery to process the signal from the radio reception section. and a second state capable of requesting a lower level of current from the battery to pause the process, the pulse conversion intermittent the current from the battery. a rectifying section that rectifies the output of the pulse converting section and supplies it to the signal processing section, and generates a signal to intermittent the pulse converting section at a duty ratio corresponding to the value of the rectified current. and an operating state indicator whose display brightness changes depending on the duty ratio exhibited by the output of the pulse converter. Here, in a third state in which the signal processing unit processes the output from the wireless reception unit, the signal processing unit supplies a current from the battery whose value is approximately equal to a high level current value requested in the first state. It is desirable to have the means to make the request.

[Effect]

The signal processing unit performs intermittent operations between a standby state and a reception ready state. In the standby state, it consumes low current from the battery, and in the ready state, it consumes high current.

In the receiving state, the same high current as in the ready state is consumed. The current from the battery is once interrupted, then rectified and given to the signal processing section, and the duty ratio of this interruption changes depending on the current value.

For example, in LE, the brightness changes depending on the duty ratio.
D is used to display the operating status.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this embodiment.

As shown in FIG. 1, this embodiment includes a radio receiving section 2 that demodulates an incoming harmonic signal, and a calling number included in the signal demodulated by this radio receiving section 2, which is a calling number unique to the own device. The signal processing section 3 includes a signal processing section 3 that detects whether or not the signal processing section 3 matches the above, and a battery 9 that supplies direct current to the signal processing section 3. A first state in which a high level current can be requested from the battery 9 to process the signal from the wireless receiver 2, and a second state in which a low level current can be requested from the battery 9 and this processing can be temporarily suspended. and a means for repeating the state and processing the output from the radio receiving section 2. In the first state, a current whose value is approximately equal to the high level current value requested in the first state is requested from the battery 9. -1- a pulse converting unit which intermittents the current from the battery 9]0, rectifying the output J of the pulse converting unit 10 and providing it to the signal processing unit 3;
and a rectifier 1 that generates a signal to intermittent the pulse converter 10 at a duty ratio corresponding to the value of the rectified current.
1, and an operating state display 12 whose display brightness changes according to the duty ratio exhibited by the output of the pulse conversion section 10.

Next, the operation of this embodiment will be explained.

The high-frequency signal received by the antenna 1 is demodulated by the radio receiving section 2, processed by the signal processing section 3, and when it matches the data in the calling number storage circuit 4, a signal is sent to the drive circuit 5, and the signal is sent to the alarm device 6. When an alarm sound is emitted and display information is added to the received signal, the signal is sent to the display drive circuit 7 and displayed on the display 8.

The voltage from the battery 9 is converted into a pulse waveform via the bulk 2 converter 10, further converted into direct current by the rectifier, and supplied to the signal processor 3. The signal processing section 3 is shown in FIG. 2(B).
As shown in , the intermittent operation is performed at a predetermined timing, and in the time interval TI, the signal processing is possible in which the received signal from the wireless reception unit 2 can be processed, and in the time interval 1, In a standby state in which most of the processing functions of the time interval 'K' are stopped, and when the received signal shown in Fig. 2 (A) is input manually, the time interval corresponding to the length of the signal is Since signal processing is performed in the same way as in the time interval '[1] between T and T, the power supply current has a large value in the time interval 1 and I3, as shown in Figure 2 (C), depending on the respective timing. 11, and the smaller value is 12 in the time interval T2. Power is supplied to the signal processing section 3 from a battery 9 via a pulse conversion section 10 and a rectification section 11, but the pulse conversion section 10 is composed of a free-running oscillator, and -
After converting the waveform into a DC pulse waveform, the rectifier 11 consisting of a diode and a capacitor converts the output voltage back to DC and feeds back the output voltage to the pulse converter 10. Pulse converter 10
The duty ratio of the pulse wave can be changed. In FIG. 3(A), the duty ratio of the pulse wave is represented by F--, where (Δ) is X with a large duty ratio. The pulse waveform (B) shows a pulse waveform with a small duty ratio.

Figure 4 shows the relationship between the load current and the duty ratio of the pulse wave.When the current value is large, the pulse wave with a large duty ratio F1 oscillates, and when the current value is small, the pulse wave with a large duty ratio F1 oscillates. oscillates with a pulse wave having a small duty ratio F2. By pulse-driving the LEDs so that the operating status display 12 displays at a brightness that corresponds to the duty ratio of the output signal of the pulse converter 10, the brightness can be changed by the difference in the current value flowing through the LEDs. . Therefore, when the signal processing section 3 is in a state where signal processing is possible and the power supply current is large, the duty ratio of the pulse waveform becomes large and the LED is displayed brightly. If it is small, the duty ratio of the pulse waveform becomes small and the LED is displayed darkly.

〔Effect of the invention〕

As explained above, in the present invention, the brightness display is shifted according to the power supply current value of the signal processing section. In addition, by looking at the length of time when it is bright, you can check whether the signal is being processed intermittently or whether the received signal from the wireless receiver is being processed intermittently. It is possible to determine whether processing is being performed, and it has the effect of confirming that not only the signal processing section but also the radio reception section is operating normally. Furthermore, if the wireless receiving section is operating normally and the bright display time is consistent, it has the effect of confirming that the area is outside the service area where radio waves from the base station reach.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a time chart of the signal processing section shown in FIG. 1. FIG. 3 is a pulse waveform diagram of the pulse converter shown in FIG. 1. FIG. 4 is a graph showing the relationship between the power supply current of the signal processing section shown in FIG. 1 and the duty ratio of the pulse waveform of the pulse conversion section. DESCRIPTION OF SYMBOLS 1... Antenna, 2... Radio receiving part, 3... Signal processing part, 4... Calling number memory circuit, 5... Drive circuit, 6... Alarm, 7... Display Drive circuit,...Display device, 9...Battery, 10...Pulse converter, 11...
- Rectifier section, 12...operating status indicator.

Claims (1)

[Claims] 1. A radio receiving section that demodulates an incoming harmonic signal, and a system that determines whether the calling number included in the signal demodulated by this radio receiving section matches the calling number unique to the own device. In a selective calling receiver that includes a signal processing section for detecting and a battery that supplies direct current to the signal processing section, the signal processing section requests a high level current from the battery to transmit a direct current from the radio reception section. means for iterating between a first state in which the signal from the battery can be processed and a second state in which the process can be paused by requesting a lower level of current from the battery; An intermittent pulse converter, and a signal that rectifies the output of the pulse converter and supplies it to the signal processing unit, and that causes the pulse converter to intermittent at a duty ratio corresponding to the value of the rectified current. A selective call receiver comprising: a rectifier; and an operating status indicator whose display brightness changes according to the duty ratio of the output of the pulse converter. 2. In a third state in which the signal processing unit processes the output from the wireless reception unit, the signal processing unit requests a current from the battery whose value is approximately equal to the high level current value requested in the first state. 2. A selective call receiver according to claim 1, further comprising means for.