JPS62116027A - Automobile telephone set - Google Patents

Abstract

PURPOSE:To make a subscriber of automobile telephone know an out-of-area, by installing a power supply turning-off key, an absence key, and an out-of-area display section to the console face of an automobile telephone set, and providing a key input detecting circuit, a driver circuit, a power supply turning off delaying circuit, a control circuit, and a circuit for data transmission/reception. CONSTITUTION:A power supply turning off key 10, absence key 11 which indicates that a driver temporarily leaves an automobile, and out-of-area display section 12 which indicates that the automobile gets into an out-of-area are provided in an operating section 13. When the automobile gets into an out-of- area, an out-of-area signals is sent from the exchange of the automobile telephone set. On the automobile telephone set side, the out-of-area signal is received through an antenna 24, MODEM circuit 20, and data receiving circuit 17 and a control circuit 18 detects the out-of-area signal from control channel data. Upon receiving a control signal from the control circuit 18, a driver circuit 15 ignites a light emission element and indicates that the level of the place where the car is becomes lower than a value.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a car phone in a car phone system.

(Prior Art) Conventionally, in a car telephone exchange system, there has been no means for the car telephone exchange system to obtain information on whether a car telephone is powered off or absent. Furthermore, there is no display on the car phone indicating that the car is out of the area. In the car telephone exchange, the subscriber is
Unable to determine whether the source was off or absent.

(Problem to be solved by the invention) The car phone is powered off'a@! If the power is turned off by pressing , the car phone switching system always activates the car when a call request is made to the car phone, and returns a busy tone when there is no response.

Therefore, as a service function for the calling party, there is a drawback that it is not possible to provide the calling party with information as to whether the called party is turned off or if the caller cannot be connected because the user is not present.

The object of the present invention is to provide information on what causes the connection when the car phone is not connected to the car Z car 1! Story '5! By providing this information to the telephone exchange system, it is possible to provide even better service to callers, and in the event of an out-of-area situation, it can be easily determined whether a call is possible or not by displaying it on the car's telephone. It is possible to make a car phone system.

(Ninth Means for Solving the Problems) In order to achieve the above object, the car phone according to the present invention is a car phone of a car phone system, which has a power-off key and an absent phone key that means to temporarily leave the car. , the operation section is equipped with an out-of-area display section that indicates that the level of the area where the car is running falls below a certain value during a call, and the operation section detects the pressing of the power off 1! key or the absent phone key! When the key input detection circuit and the telephone key input detection circuit detect the telephone key information 1, the vehicle number and the power off signal are added to the control channel to distinguish the absence signal, and the signal is received during a text conversation. When an out-of-area signal is detected from the control channel data, a formal signal to display the out-of-area display section is sent and received between the output control circuit and the control channel data exchange. and a power-off delay circuit 7 for turning off the power after a certain period of time has elapsed since the power-off signal was sent from the key input detection circuit.

(Example〕 Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a block diagram showing a seventh embodiment of a car telephone according to the present invention.

The operation unit 13 has a t power off key 10, allowing you to temporarily leave the car? An out-of-area display section 12 is provided to indicate that the vehicle is out of the area. The power-off telephone key 10 and the absent telephone key 11 are connected to the telephone key input detection circuit 14, and! The key input detection circuit 14 detects when the electric key 10.11 is turned on.
Power off signal or absent signal? Occur. ! The output of the key input detection circuit 14 is connected to a control circuit 18 and a power-off delay circuit 16. The power off delay circuit 16 is a signal for turning off the power supply circuit 19 after a certain period of time when a power off signal is input. Send. - When the control circuit 18 receives the power off signal or the absence signal, it performs control to change the vehicle number and the specific code that distinguishes the power off signal or the absence signal to the control channel data. Also,
Out-of-area 1g request is detected from the received control channel. The control circuit 18 is connected to the data transmission/reception/1g circuit 17 and further connected to the conversion circuit 20. These circuits transmit data to and receive data from the radio channel via the antenna 24.

The stuffing machine 22 is generally a car! ! This is a push-button type PBg device used in telephones, and is connected to a communication path circuit 21 for making calls, and the communication path circuit 21 is further connected to a modulation/demodulation circuit 20. The call signal is sent to the modulation/demodulation circuit 20. It is transmitted and received to and from the car telephone exchange via the antenna 7.

The control circuit 18 not only controls the communication path circuit 212 but also controls the driver circuit 15. The driver circuit 15 receives a control signal from the control circuit 18 outputted by out-of-area signal detection and ignites the detection element of the out-of-area display section.

Next, the operation for each tU operation and the operation when an out-of-area signal is received will be explained. When the user of the car phone presses the t-key input detection circuit 14, the t-key input detection circuit 14 detects this, and the control circuit 18VcN is pressed.
An L source off signal is sent. After the control circuit 18 performs control to add a specific code indicating a power off signal and a vehicle number to the control channel data, the data transmitting/receiving circuit 17 , the modulation circuit 20 and the antenna 24
A power off signal is sent to the mobile phone exchange via the link. After the power off signal is sent out, the power supply circuit 19 is turned off by a signal from the power off delay circuit 16.

On the other hand, when the absent telephone key 11Y is pressed down, this is detected by the telephone key input detection circuit 14, and an absent signal is sent to the control circuit 18. The control circuit 18 controls the addition of a specific code indicating the absence signal and the vehicle number to the control channel data, and as described above, the absence signal is sent to the car telephone exchange via the data transmitting/receiving circuit 17, the modulation/demodulation circuit 20, and the antenna 24χ. will be sent to.

When a car goes out of the area, an out of area signal is sent from the car telephone exchange. The mobile telephone side receives this through the antenna 24, the modulation/demodulation circuit 20, and the data damage circuit 17, and the control circuit 18 detects an out-of-area signal from the control channel data. When the driver circuit 15 receives a control signal from the control circuit 18, it ignites the light emitting element to indicate that the level of the vehicle's sufficient space has fallen below a certain value.

In addition to the above-mentioned operations, the control circuit 18 also turns on and off the communication path circuit 21 and enables the PBt intercom to make a call.

(Effects of the Invention) As described above in detail, the present invention provides a car telephone of a car telephone exchange system with a 'fIL power off key, absent!' A key, an out-of-area display section is provided on the operation surface, and a power detection circuit, a driver circuit, a power-off delay circuit, a control circuit, and a data transmission/reception circuit are included, making it possible to prevent out-of-the-box calls from other people. This has the effect of not only being able to notify the user of the subscriber's area (χ), but also providing information (η) about whether the subscriber's power is off or absent to the car telephone exchange side.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of a car telephone according to the present invention. 10... Power off key 11... Absent! key 12・
・・Out-of-area display 13・・Operation unit 14・
...'Electronic key input detection circuit 15...Driver circuit 16...Power off delay circuit

Claims (1)

[Claims] On a car phone in a car phone system, there is a power-off key, an absent key that indicates that you are temporarily away from the car, and an out-of-off key that indicates that the level of the area where the car is running has fallen below a certain value during a call. a telephone key input detection circuit that detects a press of the power off telephone key or the absent telephone key, and a telephone key input detection circuit that detects the telephone key information when the telephone key input detection circuit detects the telephone key information; A specific code for distinguishing an absent signal is added to the control channel, and when an out-of-area signal is detected from control channel data received during a call, a signal for displaying the out-of-area display section is output. a control circuit, a data transmission/reception/modulation/demodulation circuit for transmitting/receiving data of the control channel to/from the car telephone exchange, and a power off signal is sent from the telephone key input detection circuit, and the power is turned off after a certain period of time has elapsed. What is claimed is: 1. A car phone comprising: a power-off delay circuit;