JPH0322717A - Data communication equipment for mobile radio - Google Patents

Abstract

PURPOSE:To make an incoming indication even when a radio modem equipment and a data terminal device are disconnected by making the incoming indication by an informing means provided in a radio modem equipment. CONSTITUTION:A voltage detector 14 detects whether or not the output voltage of a battery 22 is supplied to a microcomputer 20 in a data terminal equipment 2 by turning on the power switch 21 of the data terminal device 2 through a cable 4. If an incoming signal arrives from an opposite station while the detector detects the data terminal equipment 2 not being in operation, a buzzer 15 in a radio modem device 1 makes an incoming indication. Consequently, the incoming indication can be made even when the radio modem equipment 1 and data terminal equipment 2 are disconnected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a mobile radio data communication device that performs data communication over a radio line.

(Prior Art) Mobile wireless data communication devices that perform data communication via wireless lines in a moving vehicle such as a vehicle or while being carried by a user can be roughly divided into wireless modem devices and data terminal devices. There is.

Among these, the wireless modem device is composed of a wireless device, a control device that performs data communication via the wireless device, and a battery that supplies operating power to the wireless device and the control device.

On the other hand, a data terminal device is composed of a general-purpose terminal device such as a portable small computer or a data input/output device, and a battery that supplies power to the general-purpose terminal device. Conventionally, this data terminal device has not been configured with only connection to a wireless modem device in mind, but rather has been configured to enable a wide range of applications such as connection to a data terminal device alone or to a public telephone line. ing. For this reason, the wireless modem device is connected to the data terminal device by a cable and a connector, and the data terminal device can be used as a standalone device by disconnecting the connection using the connector. When used in combination with a wireless modem device, a buzzer or a display provided on the data terminal device is configured to notify incoming calls when an incoming signal arrives from a partner station.

(Problem to be Solved by the Invention) However, in the conventional device described above, incoming call notification is performed only on the data terminal device side, so in order to move the entire device to another location, the connector must be disconnected or the power must be turned off. If an incoming signal arrives at the time of , the incoming call is not notified. Therefore, there is a problem in that important communication requests are overlooked.

This problem can be solved by keeping the wireless modem device and data terminal device connected at all times, and by keeping both devices powered on, but the cable that connects the two devices becomes an obstacle to portability. However, there is a problem in that both devices must be carried together, which is extremely inconvenient.

The present invention has been made to solve these circumstances, and an object of the present invention is to provide a mobile wireless data communication device that can notify incoming calls even when the wireless modem device and data terminal device are separated. shall be.

[Structure of the Invention] (Means for Solving the Problems) A mobile radio data communication device according to the present invention includes a detection means for detecting that the data terminal is in an inoperable state in a radio modem device, and a detection means for detecting that the data terminal is in an inoperable state. and notification means for notifying the arrival of an incoming signal, and a control device in the wireless modem device detects that an incoming signal has arrived from the other station while the detection means detects the non-operating state of the data terminal device. When the data terminal device is in an operating state, the notifying means notifies the arrival of the incoming signal, and when the data terminal device is in an operating state, the data terminal device notifies the arrival of the incoming signal.

(Operation) When the data terminal device is disconnected or in a non-operating state, such as when the power switch is not turned on, the detection means detects this. Then, when an incoming call signal from a partner station arrives while the data terminal device is detected to be in an inactive state, an incoming call notification is made from the notification means in the wireless modem device. Therefore, even if the wireless modem device and the data terminal device are disconnected, the user can know that an incoming signal has arrived, and in response to this, the two devices can be immediately connected via cable, allowing the user to reach the other party's station. It becomes possible to receive communication data from.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the present invention, in which a wireless modem device 1 includes a wireless device 10, a microcomputer 11 as a control device, a power switch 12, a battery 13,
The microcomputer 11 executes the line connection procedure via the wireless device 10 for data communication with the other station, and after the line is connected, the data manually input from the data terminal device 2 is transmitted to the other station. Data transmitted to the station or received from the other station is transferred to the data terminal device 2. Power for operation of the wireless device 10 and the microcomputer 11 is supplied from a battery 13 via a power switch 12.

The voltage detector 14 is connected to the power switch 21 of the data terminal device 2.
is turned on and the output voltage of the battery 22 is being supplied to the microcomputer 20 in the data terminal device 2 via the cable 4. Further, the buzzer 15 is used to notify an incoming call when the data terminal device 2 is in an inactive state.

On the other hand, the data terminal device 2 includes a microcomputer 20, a battery 22 that supplies operating power to the microcomputer 20 via a power switch 21, a keyboard 23 for manually inputting data and commands, and a keyboard 23 for displaying incoming calls and received data. The microcomputer 20 is composed of a liquid crystal display 24 and a buzzer 25 for notifying an incoming call, and is connected to the microcomputer 11 of the wireless modem device 1 by a cable 3. Further, the power supply voltage output from the power switch 21 is manually supplied to the voltage detector 14 of the wireless modem device 1 via the cable 4.

In the above configuration, when the power switch 1 of the data terminal device 2 is turned on via the cable 4, the voltage detector 14 in the wireless modem device 1 detects whether or not the data terminal device 2 is in an operating state. It is monitored by the presence or absence of the output voltage of 21, or the cable 3, for carrying.
4 is disconnected or the power switch 21 of the data terminal device 2 is turned off, the data terminal device 2
is determined to be in a non-operating state, and a signal of the determination result is manually input to the microcomputer 11. Once the microcomputer 11 confirms that the data terminal device 2 is in a non-operating state based on the output signal of the voltage detector 14, the microcomputer 11 generates an incoming call notification sound from the buzzer 15 when an incoming signal arrives from the other station. and notify the user.

However, when the cable 3.4 was connected, the power switch 21 was turned on, and a signal indicating that the data terminal device 2 was in operation was being output from the voltage detector 14, an incoming signal arrived from the other station. If so, the buzzer 15 is stopped and the incoming signal is transferred to the data terminal device 2 via the cable 3. Then, under the control of the microcomputer 20 in the data terminal device 2, the buzzer 25 generates an incoming notification sound, and the liquid crystal display 24 displays an incoming call.

Therefore, even if an incoming signal arrives from the other station while the data terminal device 2 is in a non-operating state, the buzzer 15 in the wireless modem device 1 will notify the incoming call, so the cables 3 and 4 can be removed for transportation. Even if the power switch 21 is turned off, the user can know that there is an incoming call. Then, immediately connect cable 3
．． 4 and turn on the power switch 21, it is possible to receive data from the other station. In addition,
The reason why the buzzer 15 is turned off when the data terminal device 2 is in the operating state is that if both the wireless modem device 1 and the data terminal device 2 notify the incoming call, it will be difficult to confirm it.
On the contrary, it becomes inconvenient.

Note that whether or not the data terminal device 2 is in an inactive state can be determined by sending a confirmation signal from the wireless modem device 1 to the data terminal device 2, and when there is a response, it is assumed that the data terminal device 2 is in an operating state. You may also take notes on how to determine t'l1.

In addition, if a call is received while the data terminal device 2 is inactive, a message is sent to the other party that the data terminal device 2 is inactive, and the other party calls again after a predetermined period of time has elapsed. Then, even if the user does not notice the incoming call notification by the buzzer 15, the incoming signal will arrive at predetermined time intervals until the data terminal device 2 becomes operational, thereby ensuring that the call from the other station is received. be able to.

Furthermore, even if the data terminal device 2 is in an inactive state, it is possible to notify the incoming call.
For example, by controlling the power switch of the data terminal device 2 to be in an OFF state until an incoming signal arrives, it is possible to suppress consumption of the battery 22 of the data terminal device 2.

Further, in the wireless modem device 1, a buzzer 15 is used to notify the incoming call, but it can also be configured to be displayed on a display means such as a liquid crystal display.

[Effects of the Invention] As explained above, in the present invention, when an incoming signal arrives from a partner station while the data terminal device is in an inactive state, the incoming signal is notified by the notification means provided in the wireless modem device. As a result, even if the cable connecting the two devices has been removed for portability, or the power switch of the data terminal device is turned off, it is possible to receive an incoming call from the other party and respond to it. By activating the data terminal device, data from the partner station can be reliably received.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Wireless modem device, 2... Data terminal device, 3
．． 4... Cable, 10... Wireless device, 11.20
...Microcomputer, 12.21...Power switch, 13.22...Battery, 14...Voltage detector, 15.25...Buzzer 23...Keyboard, 2
4...Liquid crystal display.

Claims (1)

[Claims] A wireless device, a wireless modem device having a control device that performs data communication via a wireless line via the wireless device, and a wireless modem device connected to the wireless modem device by a cable to input and output data to be communicated. A mobile radio data communication device comprising a data terminal device, the radio modem device including: a detecting means for detecting that the data terminal is in an inactive state; and a detecting means for notifying that an incoming signal has arrived from a partner station. notifying means, the control device causes the notifying means to notify the arrival of the incoming signal when an incoming signal arrives from the other station while the detecting means detects the non-operating state of the data terminal device; A mobile radio data communication device characterized in that when the data terminal device is in an operating state, the data terminal device notifies the arrival of an incoming signal.