JPH01218220A - Radio calling receiver - Google Patents

Abstract

PURPOSE:To easily acknowledge the self-service condition with a carrying person by providing an alarm means to acknowledge the movement between service areas with received area information and inform a receiver carrying person of this with the alarm. CONSTITUTION:The title receiver is composed by processing a selection calling signal received through a receiving part 1 and a detecting part 2 at a decoder part 3 and a calling control part 4 and collating the selection calling signal and a selfselection calling signal stored in a selection calling number storing part 5. On the other hand, a channel control part 6 supervises a receiving signal level at any time, when the reduction of the level is detected, the area information transmitted from a transmission station through a reception frequency switching control part 7 is detected and the identification of the channel to be received and the switching of the reception frequency are executed. At this time, the control part 6 compares the old area information stored in an area information storing part 8 and the newly received area information, when both are different, an alarm is issued from an alarm generating part 9, the contents of the storing part 8 are updated and the area information is displayed at a displaying part 10.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a radio paging receiver that can be used in multiple service areas.

"Prior Art" Radio paging services cover major cities across the country through multiple service areas. When there are multiple systems in each service area or in the same service area, each system has a different channel, that is, a different frequency, and in principle, one frequency is assigned to one receiver. Therefore, a receiver can receive calls only on designated channels within the service area to which the receiver belongs.

However, by configuring as follows, it can be used in multiple service areas. That is, the receiver is equipped with a means for detecting a drop in the received signal level, and a means for detecting a drop in the received signal level of the receiving channel and when a sufficient received signal level is not obtained in any channel. means for sequentially switching frequencies to detect a channel from which a predetermined received signal level can be obtained; and means for detecting regional information transmitted from a transmitting station;
Using this area information, by providing a means to switch the reception frequency to the channel that you should receive in the service area, you can automatically switch the reception frequency etc. and receive calls even if you move across the service area. □Ru.

On the other hand, the following two methods can be considered for the calling party to call the multi-area radio paging receiver as described above.

The first is a method in which the caller makes a call request to a signal generator in the service area where the receiver is located.

Second, the home call control device to which the receiver belongs is determined, and all calls to the receiver are accepted by the home call control device, and the receiver moves from one service area to another. Sometimes, a predetermined number of calls can be made, no matter where the receiver's service area is located, by forwarding a call received by the home call control device to a destination service area that has been memorized by another location registration operation. This is a method of calling in one step.

Problem to be Solved by the Invention 1rtJ By the way, since a radio paging receiver does not have a transmitting means and cannot perform automatic location registration, if the person carrying the receiver moves within the service area, the person carrying the receiver may make a call. It is necessary to notify the user or the call control device in the home service area of the service area in which the user is located by using a telephone or the like.

However, with a receiver that automatically switches reception frequencies, etc., it has been difficult for the person carrying the receiver to recognize the timing to notify the service area of the receiver.

SUMMARY OF THE INVENTION An object of the present invention is to provide a radio paging receiver for multiple service areas, which allows the person carrying the receiver to easily recognize the timing for notifying the service area of the receiver.

"Means for Solving the Problems" The radio paging receiver of the present invention is a radio paging receiver that can be used in a plurality of service areas, and includes detection means for detecting regional information being transmitted within each service area. and a storage means for storing regional information detected by the detection means; and an alarm means for issuing a double alarm when the regional information stored in the storage means and the regional information newly detected by the detection means are different. It is characterized by having the following.

"Operation" The radio paging receiver of the present invention recognizes movement between service areas based on the received area information, and notifies the person carrying the receiver of this through an alarm.

"Example" Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, ■ is a receiving section, 2 is a detection section, 3 is a decoder section, 4 is a call control section, 5 is a selective call number storage section, 6 is a channel control section, 7 is a receiving frequency switching control section, and 8 is regional information 9 is a storage section, 9 is an alarm generation section, and IO is a display section. Normally, the receiver processes a selective calling signal received through a receiving section 1 and a detection section 2 in a decoder section 3 and a calling control section 4, and processes the selective calling signal and the self-calling signal stored in a selective calling number storage section 5. The selective call signal is checked. The selective call signal is transmitted from transmitting stations in service areas throughout Japan that are divided into multiple regions.

On the other hand, the channel control unit 6 constantly monitors the received signal level, and when detecting a drop in the level, drives the reception frequency switch 7 to sequentially switch the reception frequency and select a frequency that provides the desired reception input. , detects the regional information transmitted from the transmitting station, identifies the channel to be received, and switches the receiving frequency. At this time, the channel control unit 6
compares the old area information stored in the area information storage unit 8 with the newly received area information, and if the two are different, it is assumed that the receiver has moved to a different service area than before. Based on the judgment, the W value generating section 9 generates an alarm by visual means, auditory means, vibration, or a combination thereof, updates the contents of the local information storage 118, and displays the local information on the display section IO. . Is the local information in the selective call signal or different from the selective call signal? Sent from your transmitting station.

As the alarm generation section 9, an alarm generation section for notifying the receiver of a call can be used. In addition, the display section lO
In the case of a receiver having a display for displaying transmission information accompanying a call, it is possible to use that display, but in other cases a display dedicated to displaying local information may be used. It is necessary to provide

In this way, the radio paging receiver of this embodiment issues an alarm when the radio paging receiver moves to a different service area, thereby notifying the caller or the paging control device that the receiver carrier has moved from one service area to another. It also displays the area code of the destination.

Note that the radio paging receiver of the present invention receives regional information of a service area without relying on channel switching, and combines the old regional information stored in the regional information storage unit 8 with the newly received regional information. It is possible to compare and issue an alarm if the two are different.

In addition, not only when a channel switch occurs,
For example, when a new channel cannot be detected, another alarm may be used to notify that service cannot be received from any service area.

"Effects of the Invention" As explained above, the radio paging receiver of the present invention provides a warning to the receiver carrier when the receiver moves between service areas. The service status of the caller can be easily recognized, and the caller or call control device can be prompted to notify the caller or the call control device if necessary.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a receiver according to the present invention. 1... Receiving section, 2... Detecting section, 3.
...decoder section, 4...call control section,
5... Control call number storage unit (storage means), 6.
...Channel control unit, 7...Reception frequency switching control section, 8...
Regional information storage unit, 9... Alarm generating unit (alarm means), 10...
...Display section. Applicant Nippon Telegraph and Telephone Corporation

Claims (1)

[Claims] A radio paging receiver that can be used in a plurality of service areas, comprising: a detection means for detecting regional information transmitted within each service area; and a memory for storing the regional information detected by the detection means. A radio paging receiver characterized in that it is equipped with a storage means for storing information stored in the storage means, and an alarm means for issuing an alarm when the local information stored in the storage means and the local information newly detected by the detection means are different. .