JPH05327596A - Selective call receiver - Google Patents

Abstract

PURPOSE:To promptly change batteries before the output voltage of the batteries falls below the working voltage of the receiver by easily predicting the expected date of the next battery change at any time in the selective call receiver of this kind. CONSTITUTION:The date of the battery change is automatically stored in a storage circuit 7 by the changing operation of the battery 13 and the date is displayed at a display circuit 9 at any time by operating an operation part 12 as required. Then, the expected date of the next battery change is made easily predictable at any time (for example, by setting that the date of the previous battery change + 3 months = the date of the next battery change, etc.) for the selective call receiver. Thus, the batteries can be changed promptly before the output voltage of the battery falls below the working voltage of the receiver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selective call receiver known as a liquid crystal display type pager or the like, and more particularly to a selective call receiver capable of avoiding a situation in which the battery cannot be used due to a dead battery. ..

[0002]

2. Description of the Related Art In recent years, a new type of buzzer, a light emitting diode, a liquid crystal display, etc. has been provided which is capable of displaying a desired message while performing a calling operation by sounding or emitting light. Selective call receivers are known.

An example of such a selective call receiver is shown in the block diagram of FIG. In the figure, 1 is an antenna for receiving a selective call signal wirelessly transmitted from a base station (not shown), 2 is a radio circuit functioning as a high frequency amplification stage, 4 is an oscillation circuit functioning as a local oscillator, and 3 is an intermediate frequency signal. A mixing circuit functioning as a frequency converter, 5 is a demodulation circuit for demodulating a baseband signal (individual number code and message code) from an intermediate frequency, and 6 is an individual number code included in the demodulated baseband signal. The ID code stored in the storage circuit 7 is collated, and when the two coincide, the alarm 10 is sounded via the drive circuit 8 and the display circuit 9
Is a control circuit for displaying a message corresponding to the message code.

Conventionally, in this type of selective call receiver, the notification of a dead battery is performed by constantly monitoring the output voltage of the battery and issuing a predetermined alarm based on the fact that the output voltage of the battery falls below a specified voltage. It was customary to prompt the user to replace the battery.

However, in such a conventional battery dead notification, since the specified voltage for issuing the battery dead alarm is set to the operating voltage lower limit value of the device or slightly lower than it, the battery dead alarm is issued. There was a problem that the receiver would soon become unusable if no replacement battery was available at the time of installation.

[0006]

As described above, in the conventional battery dead notification in this type of selective call receiver, the specified voltage for issuing the battery dead alarm is the lower limit value of the operating voltage of the device or its lower limit. Since it was set to be slightly lower, there was a problem that the receiver would soon become unusable if the replacement battery was not at hand at the time of the low battery alarm.

The present invention eliminates the above problems and makes it possible to easily predict the next scheduled battery replacement date at any time in this type of selective call receiver, so that the output voltage of the battery is below the operating voltage of the device. The purpose is to promptly replace the battery before it drops.

[0008]

The invention according to claim 1 of the present application receives a selective calling signal wirelessly transmitted from a base station, and an individual number code and a message inserted in the selective calling signal. In a selective call receiver that performs a calling operation and a message display based on a code, a time circuit that generates date information and date information obtained from the time circuit in response to a battery replacement operation are used as a battery replacement date. And a battery replacement date display unit for displaying the battery replacement date stored by the battery replacement date storage unit in response to a predetermined battery replacement date display request operation. It is a feature.

According to the invention of claim 2 of this application, the selective call signal wirelessly transmitted from the base station is received, and the call is made based on the individual number code and the message code inserted in the selective call signal. In a selective call receiver that performs operation and message display, a time circuit that generates date information, and whether it is the first time setting from the time unset state in response to the current time setting operation for the time circuit. The first time setting determination means for determining, the battery replacement date storage means for back-calculating the battery replacement date from the date when the first time setting determination means determines the first time setting, and a predetermined battery replacement date display And a battery replacement date display unit for displaying the battery replacement date stored by the battery replacement date storage unit in response to the requested operation.

According to the invention of claim 3 of this application, in the invention of claim 1 or 2, the next scheduled battery replacement date is calculated by applying the battery replacement date to a formula based on past performance data. And a scheduled battery replacement date display means for displaying the calculated scheduled battery replacement date in response to a predetermined scheduled battery replacement date display request. ..

[0011]

According to the first aspect of the present invention, the battery replacement date is automatically stored by the battery replacement operation, and it is displayed whenever necessary.

According to the second aspect of the present invention, even if the date adjustment operation is not performed during the battery exchange operation, the battery exchange date is automatically back-calculated and stored together with the first date adjustment operation thereafter, and this is also required. It is always displayed according to.

According to the third aspect of the present invention, the next battery replacement scheduled date is calculated by applying the battery replacement date to the calculation formula based on the past performance data, and this is displayed whenever necessary. ..

[0014]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The block diagram of FIG. 1 schematically shows the hardware configuration of an embodiment of the selective call receiver according to the present invention. In the figure, the same components as those of the conventional example of FIG. 5 are designated by the same reference numerals.

In the figure, 1 is an antenna for receiving a selective call signal wirelessly transmitted from a base station (not shown), 2 is a radio circuit functioning as a high frequency amplification stage, 4 is an oscillation circuit functioning as a local oscillator, and 3 is an intermediate circuit. Mixing circuit 5, which functions as a frequency converter to frequency, converts the intermediate frequency from the base frequency.
A demodulation circuit for demodulating the band signal (individual number code and message code), 6 collates the individual number code included in the demodulated base band signal with the ID code stored in the memory circuit 7, and the two match. Based on this, it is a control circuit for sounding the alarm device 10 via the drive circuit 8 and displaying a message corresponding to the message code on the display circuit 9.

In addition to the basic configuration of the selective call receiver described above, the selective call receiver of this embodiment includes a time circuit (which is composed of an electronic clock circuit or the like) 11 for generating date information. , Battery replacement date storage means 6a for storing date information obtained from the time circuit 11 in the storage circuit 7 as a battery replacement date in response to a battery 13 replacement operation (including a time setting operation), and a predetermined value in the operation unit 12. In response to the battery replacement date display request operation, the battery replacement date is displayed on the display (comprising a liquid crystal display etc.) 9 indicating the battery replacement date stored in the storage circuit 7 by the battery replacement date storage means 6a. Means 6
b and are provided. Here, the battery replacement date storage means 6
The "a" and the battery replacement date display means 6b are realized by software by a microcomputer forming the control circuit 6.

Details of the battery replacement date storage means 6a are shown in the flowchart of FIG. As shown in the figure, when the battery replacement operation is detected by checking a predetermined power-on flag (step 201), the validity of the clock time is subsequently determined by a predetermined algorithm (step 202).

When it is determined that the clock time is valid (YES in step 202), the current date is immediately stored as it is in the storage circuit 7 as the battery replacement date (step 204). On the other hand, if it is determined that the clock time is not valid, after waiting for the clock time adjustment by the user (step 208), the current date after the time adjustment is stored in the memory circuit 7 as the battery replacement date (step 208). 20
4).

Details of the battery replacement date display means 6b are shown in the flowchart of FIG. As shown in FIG.
When it is determined in step 2 that a predetermined switch operation or the like corresponding to the battery replacement date display request is performed (step 30
1), the battery replacement date is immediately read from the memory circuit 7,
This will be displayed on the display circuit 9 (step 3).
02).

As described above, according to the above-described embodiment, the battery replacement date is automatically calculated by the replacement operation of the battery 13.
And is displayed on the display circuit 9 at any time by operating the operation unit 12 as necessary. Therefore, according to this selective call receiver, it is possible to easily predict the next scheduled battery replacement date at any time (for example, the previous battery replacement date + 3 months = the next battery replacement date, etc.). The battery can be promptly replaced before the output voltage of the device drops below the operating voltage of the device.

Another embodiment of the present invention is shown in the flow chart of FIG.
Shown in G. In this embodiment, when a setting operation of the current time is detected (step 401), it is determined whether the time is the first time setting from the time unset state (step 402),
If it is determined that it is the first time setting (step 402YE
S), the battery replacement date is calculated and stored by calculating backward from today (step 403). Therefore, according to this embodiment, it is possible to reliably generate and store the battery replacement date even if the time is not adjusted for a certain period from the battery replacement date.

Further, in the embodiment shown in FIGS. 2 to 5, a battery replacement scheduled date calculating means for calculating the next battery replacement scheduled date by applying the battery replacement date to a calculation formula based on past performance data. And a battery replacement scheduled date display means for displaying the calculated battery replacement scheduled date in response to a predetermined battery replacement scheduled date display request from the operation unit 12,
The scheduled battery replacement date can be displayed directly on the display circuit 9.

Although the above description of the embodiment has been made on the premise of the hardware configuration shown in FIG. 1, the present invention can of course be applied to selective call receivers having various other hardware configurations. Is.

[0024]

As described above, according to the present invention, in this type of selective call receiver, the next scheduled battery replacement date can be easily predicted at any time, so that the output voltage of the battery can be adjusted. The battery can be replaced promptly before the voltage drops below the operating voltage.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing a hardware configuration in an embodiment of a selective call receiver according to the present invention.

FIG. 2 is a flowchart showing the configuration of a battery replacement date storage means in the selective call receiver shown in FIG.

FIG. 3 is a flow chart showing the configuration of the battery replacement date display means shown in FIG.

FIG. 4 is a flowchart showing another embodiment of the selective call receiver according to the present invention.

FIG. 5 is a diagram showing an example of a conventional selective call receiver according to the present invention.
FIG. 3 is a block diagram schematically showing a hardware configuration.

[Explanation of symbols]

 1 Antenna 2 Radio Circuit 3 Mixing Circuit 4 Oscillation Circuit 5 Demodulation Circuit 6 Control Circuit 7 Memory Circuit 8 Drive Circuit 9 Display Circuit 10 Alarm 11 Time Circuit 12 Operation Unit 13 Battery

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsushi Shiono 21-3-1, Asahigaoka, Hino-shi, Tokyo 21 Toshiba Communication Technology Co., Ltd.

Claims (3)

[Claims] 1. A selective call signal wirelessly transmitted from a base station is received, and a calling operation and a message display are performed based on an individual number code and a message code inserted in the selective call signal. In the selective call receiver, a time circuit that generates date information, a battery replacement date storage unit that stores the date information obtained from the time circuit in response to a battery replacement operation as a battery replacement date, and a predetermined battery replacement date A selective call receiver, comprising: a battery replacement date display means for displaying the battery replacement date stored by the battery replacement date storage means in response to a display request operation. 2. A selective calling signal wirelessly transmitted from a base station is received, and a calling operation and a message display are performed based on the individual number code and the message code inserted in the selective calling signal. In a selective call receiver for performing, a time circuit for generating date information, and an initial time setting determination means for determining whether or not the time circuit is an initial time setting in response to a current time setting operation for the time circuit And a battery replacement date storage unit that stores the battery replacement date by calculating the battery replacement date from the date when the initial time setting determination unit determines that the battery has been set in response to a predetermined battery replacement date display request operation. A selective call receiver comprising battery replacement date display means for displaying the battery replacement date stored by the replacement date storage means. 3. A battery replacement scheduled date calculation means for calculating a battery replacement scheduled date by applying the battery replacement date to a calculation formula based on past performance data, and a predetermined battery replacement scheduled date display request. 3. The selective call receiver according to claim 1 or 2, further comprising: a battery replacement scheduled date display means for displaying the calculated battery replacement scheduled date in response.