JPH1051829A - Radio calling receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to perform calling operation without lowering reception sensitivity by calculating intervals of receiving operation from specified cycles and setting the continuance of the calling operation shorter than the intervals of the receiving operation. SOLUTION: A control part 3 calculates the interval between receiving operation and receiving operation from reception cycles N which are read out of a receive signal and stored in a memory 4, and then calculates calling continuance Tc in consideration of the time up to when the influence of the calling operation is ceased after the calling operation ends, i.e., the time up to when the influence of a pulse noise and a drop in source voltage due to the calling operation is eliminated and a stable state is entered. In this case, Tc=(N-1)×Tf-To, where To is a reception stabilization time To needed to stabilize the receiving operation. Here, Tf is the length of one frame. Then the control part 3 sets the calculated time Tc in the memory 4 and drives a speaker 6 or vibration motor 7 according to the set calling continuation to perform the calling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio paging receiver used in a radio paging system including information for designating a reception cycle in a reception signal, and more particularly to a paging operation without lowering reception sensitivity. To a possible paging receiver.

[0002]

2. Description of the Related Art A radio paging receiver performs a paging operation such as sounding from a speaker or vibration by a vibration motor during self-reception to notify a user of the reception. In the conventional radio paging receiver, the duration of the paging operation is stored in the storage unit in advance, and at the time of self-reception, the control unit starts the paging operation, and unless the stop instruction is input in the middle, the duration is maintained. , The ringing or vibration calling operation is continued.

In a paging system, a period for performing a receiving operation (reception period) is specified in a transmitted signal. In such a system, a paging receiver receives a signal when a signal is received. A receiving operation is performed in accordance with a designated cycle to read information from a signal.

Here, a paging operation in a conventional paging receiver will be described with reference to FIG. FIGS. 4A and 4B are timing charts showing a paging operation in a conventional radio paging receiver. FIGS. 4A and 4B show timings of receiving signals different from each other, and FIG.
Indicates the timing of the calling operation. As shown in FIG. 4, assuming that the length of a frame as a basic unit of a transmission signal is Tf, the period of an actual reception operation is represented by Tf × N. In the signal of (a), N (reception cycle) = 16, and in (b), N = 8.

[0005] Then, as shown in (c), when the self-reception is confirmed by the reception operation, the control unit performs the call operation for the preset call duration time Tc. At this time,
As shown in (a), when Tc ≦ Tf × (N−1), that is, when the call duration is equal to or less than the interval between the reception operations, the call operation is performed only during non-reception. However, as shown in (b), when Tc> Tf × (N−1), that is, when the call duration is longer than the interval of the reception operation,
The receiving operation is performed while the calling operation is continued.

[0006]

However, in the conventional radio paging receiver, when a receiving operation is performed during a paging operation, pulse noise occurs during a ringing operation, and the S / N ratio of a received signal is reduced. Also, during vibration operation, the power consumption of the motor for generating vibration is large, so if a battery with a large internal resistance such as an air battery is used, the power supply voltage will drop significantly and the reception sensitivity will decrease. There is a problem that this leads to a decrease in

The present invention has been made in view of the above circumstances, and has as its object to provide a radio paging receiver capable of performing a paging operation without lowering reception sensitivity.

[0008]

According to the first aspect of the present invention, a receiving operation is performed in accordance with a cycle specified in a received signal, and a signal addressed to the self is received. In the case of a radio paging receiver that performs a paging operation, an interval between the reception operations is calculated based on the period, and a duration of the paging operation is set to be less than the interval between the reception operations. The calling operation at the time can be ended before the next receiving operation is started, so that the calling operation and the receiving operation can be prevented from being performed at the same time, and the reception sensitivity can be prevented from lowering.

According to a second aspect of the present invention, there is provided a radio paging receiver according to the first aspect, wherein an upper limit value of a duration of the paging operation is set in advance and the paging operation is performed. When the duration of the call exceeds the upper limit, the upper limit is set as the duration of the call operation, and the duration of the call operation is prevented from being inappropriately increased, and the appropriate duration It can be.

According to a third aspect of the present invention, there is provided a radio paging receiver according to the first aspect, wherein a lower limit value of a duration of the paging operation is set in advance. If the continuation time is less than the lower limit, first, perform a calling operation for the duration of the calling operation,
It is characterized in that the calling operation is performed up to the lower limit after the receiving operation is completed, so that the reception time can be reliably notified to the user so that the duration of the calling operation is not too short.

[0011]

Embodiments of the present invention will be described with reference to the drawings. A first paging receiver (first apparatus) according to an embodiment of the present invention sets a duration of a paging operation based on a reception cycle specified in a reception signal, and sets a paging operation and a reception operation. Are not performed at the same time, and the receiving sensitivity is not reduced.

FIG. 1 is a block diagram showing a configuration of a first radio pager (first apparatus) according to an embodiment of the present invention. As shown in FIG. 1, the first apparatus checks a reception detector 1 for demodulating (detecting) a received signal with a calling number in the received signal and its own calling number. A decoding unit 2 for selecting data from among them, a control unit 3 for setting the duration of a calling operation, a memory unit 4 for storing data read from a received signal, a key switch 5 for inputting power and the like, The speaker 6 includes a speaker 6 that outputs sound and a vibration motor 7 that generates vibration.

Next, each component of the first apparatus will be specifically described. The decoder 2 is similar to the conventional one, and selects necessary data from the signal received by the reception detector 1. The decoder 2 also detects the reception cycle N in the data. , To the control unit 3.

The control unit 3, which is a characteristic part of the first apparatus,
A memory for storing the reception cycle N received from the decoder unit 2 in a memory unit 4, calculating a call duration time Tc, setting the calculated call duration time in the memory unit 4, and outputting a call operation instruction based on the set duration time. It is.

The memory unit 4 has an area for storing the reception period N input from the decoder unit 2 and the call duration Tc calculated by the control unit 3 based on N. Input / output of data to / from the memory unit 4 is performed by the control unit 3.

Here, a method of calculating the call duration time Tc in the control unit 3 of the first apparatus will be described. Control unit 3
Calculates the interval between the receiving operation and the receiving operation based on the receiving cycle N read from the received signal and stored in the memory unit 4. Further, after the calling operation is completed, until the effect of the calling operation is eliminated. In other words, the call duration time Tc is calculated in consideration of the time, ie, the time until the influence of the pulse noise and the power supply voltage drop due to the calling operation is eliminated and the time is stabilized.
That is, in the first device, the duration of the calling operation is set so that the receiving operation is performed after a certain period of time necessary for stabilizing the state of the device has elapsed from the end of the calling operation.

Assuming that the time required for stabilizing the receiving operation is the receiving stabilization time (T0), the call duration time Tc is:
It is calculated as Tc = (N-1) .times.Tf-T0. Here, Tf is the length of one frame.

The control section 3 sets the calculated call duration time Tc in the memory section 4, drives the speaker 6 or the vibration motor 7 according to the set call duration time, and performs a call operation. I have.

Next, the calling operation in the first device will be specifically described with reference to FIG. FIG. 2A is a timing chart showing the timing of the receiving operation when the receiving cycle N = 16, FIG. 2B is a timing chart showing the calling operation corresponding to FIG. 2A, and FIG. Is
It is a timing chart which shows the timing of the receiving operation when N = 8, and (d) is a timing chart which shows the calling operation | movement corresponding to (c). As shown in FIGS. 2A and 2B, if the self-reception is confirmed by the first reception operation and the reception period (N) is read by the decoder unit 2, the control is performed when the reception period N = 16. The unit 3 starts the paging operation immediately after the end of the receiving operation, and continues the paging operation for the paging duration Tc calculated according to the above-described formula.

For example, the length of one frame Tf = 1.87
Assuming that 5 seconds and the reception stabilization time T0 = 0.1 seconds, when the reception cycle N = 16, Tc = (16-1) × 1.875.
0.1 = 28.025 seconds. As described above, when the time T0 elapses after the end of the calling operation, the next receiving operation is started. At this time, the influence of the calling operation is eliminated, and a stable receiving operation can be performed. It is.

Similarly, as shown in FIGS. 2C and 2D, when the read reception cycle is N = 8, the control unit 3 similarly sets the calling duration to Tc = (8-1) × 1.875
-0.1 = 13.025 seconds, and the calling operation started immediately after the end of the receiving operation is continued for Tc.

As described above, by calculating the call duration according to the reception cycle included in the reception signal, the call operation and the reception operation are not performed simultaneously regardless of the reception cycle. The signal can be received without any influence, and good sensitivity can be maintained.

According to the first paging receiver according to the embodiment of the present invention, reception period (N) read from reception signal by control unit 3 and reception stabilization time until the influence of the paging operation is eliminated. (T0) and the call duration time (Tc)
) Is calculated as Tc = (N-1) .times.Tf-T0, and is set in the memory unit 4. The calling operation is continued only for the set Tc. Therefore, the calling operation is started immediately after the receiving operation. Then, the calling operation has been completed before T0 when the next receiving operation starts, and the receiving operation can be performed without being affected by the pulse noise and the voltage drop due to the calling operation. This has the effect of preventing a decrease in

Next, a second paging receiver (second apparatus) according to the embodiment of the present invention will be described. The normal paging duration described above may be too long or too short for the paging operation of the radio paging receiver. In order to prevent this, in the second device, an upper limit and a lower limit of the call duration are set, and if the calculated call duration exceeds the upper limit, the call operation is stopped with the upper limit as a limit, and conversely, If the calculated calling duration is less than the lower limit,
The calling operation is extended to the lower limit.

The configuration of the second device is almost the same as that of the first device, except that the upper limit time Tmax and the lower limit time Tmin are stored in the memory unit 4 in advance, and the control unit 3 The duration Tc is compared with Tmax and Tmin to control the duration of the actual calling operation.

Specifically, when Tmin ≦ Tc ≦ Tmax, the calculated Tc is used as the duration of the calling operation, as in the first device. However, when Tc> Tmax, the calling operation is not performed. Stops at Tmax, and when Tc <Tmin, T
It extends to min and continues.

The calling operation of the second device will be described with reference to FIG. FIG. 3 is a timing chart showing a calling operation in the second device. FIG.
It is a timing chart which shows the timing of the receiving operation in case of No. 16, (b) is a timing chart which shows the normal calling operation | movement corresponding to (a), (c)
FIG. 9D is a timing chart when the calculated call duration time exceeds Tmax, and FIG. 9D is a timing chart illustrating the timing of the reception operation when N = 8;
(E) is a timing chart showing a normal call operation corresponding to (d), and (f) is a call continuation time T
It is a timing chart figure in case it is less than min.
(A), (b), (d) and (e) correspond to FIG.
(A), (b), (c), and (d).

As shown in FIGS. 2B and 2C, when the calculated calling duration Tc exceeds Tmax, the control unit 3 performs the calling operation for the calling upper limit time Tmax.
More specifically, when Tc> Tmax, Tmax is set as the duration of the calling operation so that the calling duration is kept within Tmax. By setting the upper limit in this way, it is possible to prevent the calling time from becoming too long.

As shown in FIGS. 2 (e) and 2 (f), if the minimum call time is Tmin, the call continuation time Tc
Is less than Tmin. In this case, the control unit 3 performs the paging operation for the calculated paging duration Tc, temporarily stops the paging operation, starts the paging operation again immediately after the reception operation is completed, and sets the paging operation to the paging lower limit time Tmin. To continue.

More specifically, a timer (not shown) for measuring the lower limit time of the call at the start of the calling operation immediately after the reception is started, the calling duration time Tc is set, and the first calling operation is performed for the time Tc. . When the first paging operation is completed, the second reception operation is performed. When the second reception operation is completed, the timer for counting the lower-limit paging time is checked. Start the calling operation. This operation is continued until the timer times out. When the time is up, the calling operation is stopped at that time.

As described above, by setting the lower limit,
The ringing time can be prevented from being too short to be notified of the reception, and the ringing operation is stopped at the time of the reception operation instead of merely continuing to the minimum ringing time, so that the reception operation is not affected. That's what we do.

According to the second radio paging receiver, a paging upper limit time Tmax is set in the memory unit 4 in advance, and when the calculated paging duration Tc exceeds the paging upper limit time Tmax, the paging operation is performed at Tmax. Is performed, it is possible to prevent the calling operation from becoming too long.

Further, according to the second radio paging receiver, a paging lower limit time Tmin is set in the memory unit 4 in advance, and if the calculated paging duration Tc is less than the paging lower limit time Tmin, the reception is performed. Immediately after the operation, the calling operation is performed only for Tc and temporarily stopped. After the next receiving operation is completed, the calling operation is restarted, and the calling operation is continued until Tmin including the stop time. Is not too short, and there is an effect that the reception operation is not affected.

[0034]

According to the first aspect of the present invention, the interval of the receiving operation is calculated based on the period of the receiving operation specified in the received signal, and the duration of the calling operation is set to be less than the interval of the receiving operation. The paging operation at the time of self-reception can be completed before the next reception operation is started, preventing the paging operation and the reception operation from being performed at the same time, and lowering the reception sensitivity. There is an effect that can be prevented.

According to the second aspect of the present invention, the upper limit of the duration of the calling operation is set in advance, and when the duration of the calling operation exceeds the upper limit, the upper limit is set to the continuation of the calling operation. Since the radio paging receiver according to the first aspect of the present invention has a time duration, it is possible to prevent the duration of the paging operation from becoming inappropriately long and to provide an appropriate duration.

According to the third aspect of the present invention, the lower limit of the duration of the calling operation is set in advance, and if the duration of the calling operation is shorter than the lower limit, the duration of the calling operation is first set. The paging operation is performed at the same time, and the paging operation is further performed to the lower limit after the reception operation is completed. Therefore, the duration of the paging operation is not too short, and the reception is performed by the user. Has the effect of being able to reliably notify the user.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of a radio pager device (first device) according to an embodiment of the present invention.

FIG. 2 is a timing chart showing an operation in the first device, and FIG. 2 (a) is a timing chart showing a timing of a receiving operation when a receiving cycle N = 16;
(B) is a timing chart showing the calling operation corresponding to (a), (c) is a timing chart showing the timing of the receiving operation when N = 8,
(D) is a timing chart showing a calling operation corresponding to (c).

FIG. 3 is a timing chart showing an operation in a second radio paging receiver (second apparatus) according to the embodiment of the present invention. FIG. 3 (a) shows a reception operation in a case where reception cycle N = 16. It is a timing chart showing the timing,
(B) is a timing chart showing a normal paging operation corresponding to (a), (c) is a timing chart when the calculated paging duration exceeds Tmax, and (d) is a timing chart. It is a timing chart which shows the timing of the receiving operation in case of N = 8, (e) is a timing chart which shows the normal paging operation corresponding to (d), (f) is the paging continuation time It is a timing chart figure in case it is less than Tmin.

FIG. 4 is a timing chart showing a paging operation in a conventional paging receiver.

[Explanation of symbols]

1: reception detection unit, 2: decoding unit, 3: control unit,
4 ... memory section, 5 ... key switch, 6 ... speaker,
7 ... Vibration motor

Claims (3)

[Claims] 1. A radio paging receiver that performs a receiving operation in accordance with a cycle specified in a received signal and performs a paging operation when a signal addressed to itself is received. And calculating a duration of the paging operation to be less than an interval of the reception operation. 2. The method according to claim 1, wherein an upper limit of the duration of the calling operation is set in advance, and when the duration of the calling operation exceeds the upper limit, the upper limit is set as the duration of the calling operation. The radio paging receiver according to claim 1, wherein 3. A lower limit of the duration of the calling operation is set in advance, and when the duration of the calling operation is less than the lower limit, the calling operation is first performed with the duration of the calling operation. 2. The radio paging receiver according to claim 1, wherein the paging operation is performed up to the lower limit value after the reception operation is completed.