JPH0773377B2 - Wireless selective call receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a radio selective call receiver, and more particularly, to power ON / OFF operation of a receiver.

[Conventional technology]

In the conventional radio selective call receiver, the power switch installed in the housing controls ON / OFF of the power of the receiver. For example, a slide switch was used as the power switch, and the battery voltage was supplied / stopped to each block of the receiver by turning the switch on / off.

Further, in another conventional radio selective call receiver, the power switch is connected to the control unit. The power supply voltage is always supplied to each block of the receiver.The control unit activates the receiving unit and the decoder unit when the power switch is turned on, and stops the operation of the receiving unit and the decoder unit when the power switch is turned off. Was there. Since the control unit is composed of CMOS LSI, the power consumption is negligible even when the battery voltage is supplied when the power is turned off.

[Problems to be Solved by the Invention]

The conventional radio selective calling receiver is set to operate or not operate by a power switch installed in the housing. Therefore, it is the carrier of the receiver who decides whether or not the receiver is waiting for a call. Therefore, when the receiver carrier operates the power switch carelessly, there is a problem in that when the information needs to be sent, the receiver may not be in a state of waiting for a call and the call may be disabled.

In the past, the receiver carrier was familiar with the operation of the receiver, so there were few problems. However, when lending a selective call receiver to a waiting customer such as a bank or hospital and providing a service for displaying the waiting time, etc.,
Since the receiver carrier is unfamiliar with the operation of the receiver, it is not preferable that the receiver can be easily turned off.

A simple solution is to remove the power switch and keep the power on at all times to prevent erroneous operation by an unfamiliar carrier, but it has the drawback of consuming less battery and not being economical.

An object of the present invention is to provide a radio selective call receiver that eliminates such drawbacks.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a receiver for receiving a carrier wave modulated by a selective call signal and a message signal following the carrier wave from an antenna and demodulating the carrier wave, and outputting the demodulated signal to a decoder unit. The call signal demodulated by the unit is compared with the predetermined call signal selected by itself, and when they match, the control unit is activated, and the subsequent message signal (decoded signal) is output to the control unit. And a decoder unit that outputs a reception unit control signal and a notification unit drive signal that activates the notification unit when a message signal is input, displays the received message on the message display unit, and performs decoder control with the decoder unit. Call the receiver and the control unit that exchanges signals and outputs the display unit control signal to the message display unit, and registers the stop control signal that is a character string in advance. It consists of a notification unit that informs that there was a warning by emitting sound or light, a message display unit that displays the received message, and one push switch, and stops the operation of the notification unit and the receiver is in a stopped state In this case, the control unit is also provided with a switch unit for outputting a switch input signal, which also serves as an operation switch for starting the operation of the receiver.

〔Example〕

FIG. 1 shows the configuration of a radio selective calling receiver of the present invention.

The receiving unit 2 receives the carrier wave modulated by the selective call signal and the message signal following it from the antenna 1, demodulates the carrier wave, and outputs the demodulated signal to the decoder unit 3.

The decoder unit 3 compares the calling signal demodulated by the receiving unit 2 with a predetermined selective calling signal of its own, and when they match each other, activates the control unit 4 and controls a subsequent message signal (decoded signal). Output to 4. Also, the decoder unit outputs a receiver control signal to the receiver 2.

The control unit 4 activates the notification unit 5 by the notification drive signal when the message signal is input, and causes the message display unit 6 to display the received message. The control unit 4
A decoder control signal is exchanged with the decoder unit 3 and a display unit control signal is output to the message display unit 6. A stop control signal, which is a character string, is registered in the control unit 4 in advance.

The notification unit 5 notifies that the receiver wearer has called.
Notify by emitting sound or light.

The message display unit 6 displays the received message.

In the case of the present embodiment, the switch unit 7 is composed of one push switch. This switch is a switch that stops the operation of the notification unit 5. This switch also serves as an operation switch for starting the operation of the receiver when the receiver is in a stopped state. The switch unit outputs a switch input signal to the control unit 4.

In the case of the conventional radio selective calling receiver, the stop of the operation is also set by the operation of the switch, but the radio selective calling receiver of the present invention is not provided with the switch for stopping the operation. In order to stop the operation of the receiver, a calling signal based on the regulation is transmitted to the receiver, and then a message instructing to stop the operation is received. The control unit 4, which has received the signal of the operation stop, sets the other components of the receiver to the stop state, and after the stop state, the control unit 4 itself also stops.

FIG. 2 shows a transition diagram of the receiving state of the radio selective calling receiver of the present invention, and FIG. 3 shows a timing chart of the operation of each component of the radio selective calling receiver of the present invention.

In the CCIR / No. 1 wireless selective call receiver, the receiving section 2 operates intermittently in order to effectively use the battery for power supply in response to an operation start command from the switch section 7. In the intermittent reception state 21, by receiving the preamble signal 40 that informs the information transmission, the state 22 is transferred to the synchronization signal 41. Waiting for this sync signal
If the synchronization signal 41 is detected within the regulation by shifting to 22, the state shifts to the state 23 where the synchronization signal 41 and the address signal 44 for receiving only for the time assigned to the group to which the synchronization signal 41 belongs are awaited. If the synchronization signal reception waiting state 22 is not entered and the synchronization signal 44 is not detected within the regulation (time over), the intermittent reception state 21 is restored again. Further, in the case where the synchronization is lost in the address reception waiting state, the state returns to the synchronization signal reception waiting state 22.

When the receiver has moved to the address reception state 23, it receives a signal at a predetermined time assigned to its own group, compares it with its own address, receives the self address, and if the two are equal, then the code is continued. Receive a word (message reception state 24). When the received signal is the message signal 45, the control unit 4 compares this message with a pre-registered stop control signal.

When the received message is the stop control signal, the control unit 4 stops its operation after setting each unit of the receiver to the stop state (stop state 20). The switch of the switch unit 7 is used to restart the operation of the receiver from the stopped state 20.

When the stop signal is not detected in the received message, the notification unit 5 is activated to notify the carrier that there is a call, and at the same time, the received message is displayed on the display unit 6, and then the address reception waiting Return to state 23.

In the address waiting state 23, if the address signal is continuously received after receiving its own address, the state does not shift to the message receiving state 24 and the notifying unit 5 is operated to call the carrier. Is displayed, and the display unit 6 displays that only the call was made.

〔The invention's effect〕

As described above, according to the present invention, the power supply can be turned on by a simple switch operation, and when a predetermined character string is detected in a message, the power supply is turned off to provide a service. By remote control by
It is possible to determine the operating status of the radio selective call receiver. As a result, when an unspecified customer such as a bank, a hospital, or an airport carries the wireless selective call receiver with him, it is possible to prevent an erroneous operation such as the customer erroneously stopping the operation of the receiver. There is an effect.

In addition, the power of the receiver can be turned off by a batch operation from the transmitter, saving the trouble of turning off the power switch of each one, and by stopping the operation when it is no longer needed It is possible to effectively use batteries for batteries.

[Brief description of drawings]

FIG. 1 is a block diagram of a radio selective calling receiver of the present invention, FIG. 2 is a transition diagram of a receiving state of the radio selective calling receiver of FIG. 1, and FIG. 3 is a radio selective calling receiver of FIG. It is an operation timing chart of each component. 1 ... Antenna 2 ... Receiving part 3 ... Decoder part 4 ... Control part 5 ... Notification part 6 ... Display part 7 ... Switch part 20 ... Stop state 21 ... Intermittent reception state 22 ... Sync signal Receiving state 23 …… Address receiving state 24 …… Message receiving state 40 …… Preamble signal 41 …… Synchronization signal 42,43 …… Other group signal 44 …… Address information 45 …… Message information

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H04Q 7/12

Claims (1)

[Claims] 1. A receiver for receiving a carrier wave modulated by a selective call signal and a message signal following the carrier wave from an antenna, demodulating the carrier wave and outputting the demodulated signal to a decoder unit, and a call signal demodulated by the receiver unit. And the predetermined selective call signal of its own are compared, and when they match, the control unit is activated, and the subsequent message signal (decoded signal)
To the control unit and to output a reception unit control signal to the reception unit, and when the message signal is input, the notification unit drive signal activates the notification unit and the received message is displayed on the message display unit. The control unit that displays and exchanges the decoder control signal with the decoder unit to output the display unit control signal to the message display unit and pre-registers the stop control signal that is a character string, and the receiver carrier. It consists of a notification unit that informs that there is a call by emitting sound or light, a message display unit that displays the received message, and one push switch, and stops the operation of the notification unit and the receiver is in a stopped state. In the case of, the radio selective call receiver is characterized in that the radio selective call receiver also functions as an operation switch for starting the operation of the receiver, and comprises a switch section for outputting a switch input signal to the control section.