JPS61212149A - Automobile telephone set - Google Patents

Abstract

PURPOSE:To constitute the titled telephone set so that it can make a call to a general subscriber telephone set by a cordless telephone slave set (portable handset) even from a place which has been separated by some service area from its automobile, by adding functions of a cordless phone. CONSTITUTION:A one-body type transmitter-receiver 3 on which an automobile telephone transmitter-receiver provided with an automobile telephone mobile antenna 2 and a cordless telephone use mobile antenna 4, respectively, and a cordless telephone master set have been constituted as one body is loaded on an automobile 6. In this state, said transmitter-receiver executes a call to a subscriber telephone set of a general telephone communication network through an automobile telephone base station 1. As for the one body type transmitter-receiver 3, a call is executed within a radius R determined by the radio wave transmitting and receiving capacity between the master set 3 and the save set 5, to the slave set (portable handset) of the cordless telephone by the cordless telephone mobile antenna 4.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a mobile phone.

[Conventional technology]

Conventionally, in this type of car phone, the handset for making calls was connected to the main body with a curl cord.

[Problem that the invention seeks to solve]

Anterior body 1. The handset of Tajou's car phone was connected to the phone body using a curl cord, so it was not possible to take the handset out of the car and make calls from outside the car. Furthermore, recently developed portable telephones also have the disadvantage that they are difficult to take out of the vehicle because the power source and transmitting/receiving materials are heavy.

As a way to make calls from outside the vehicle, a transceiver is installed in the vehicle,
It is also possible to use this transceiver as a relay station to communicate between car phone base stations, but in this case, since it is simplex communication, calls can only be made using simplex.
Another drawback was that it was not possible to connect to the telephone network and make calls to regular 11L subscribers.

[Means for solving problems]

The present invention adds a cordless telephone function to a conventional car telephone. That is, the car phone of the present invention has a mobile antenna for a car phone,
A car phone that can make calls to general subscriber phones via a car phone base station, and is equipped with a mobile antenna for cordless telephones, a cordless telephone main unit integrated with an automatic single charger, and a cordless telephone slave unit. .

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a car phone and a car phone system according to the present invention.

The car 6 is equipped with an integrated transmitter/receiver 3 that is integrated with a car phone transmitter/receiver and a cordless phone main unit, each equipped with a mobile antenna 2 for a car phone and a mobile antenna 4 for a cordless phone. Through the station 1, it is possible to communicate with a subscriber telephone set (not shown) of the general telephone communication network. The integrated transmitter/receiver 3 can communicate with a cordless telephone handset 5 using a mobile antenna 4 for the cordless telephone within a radius 2 determined by the radio wave transmission and reception capability between the base unit 8 and the handset 5. be.

Now, when a person carrying a cordless phone handset 5 makes a call from a distance shorter than the radius R from the car, the radio waves are transmitted to the cordless telephone mobile antenna 4 of the integrated transmitter/receiver 3 mounted on the car. The signal is received by the mobile phone antenna 2, is received by the car phone base station 1, and can be freely used to talk to subscriber phones of the general telephone communication network. When the call outside the car is over, the person carrying the cordless telephone handset 8 returns to the car and mounts it on a handset stand (crattle, not shown), which is a normal human position in the car.

〔Effect of the invention〕

As explained above, the present invention adds a cordless phone function to a conventional car phone, thereby making it possible to make calls to a regular subscriber phone using a cordless telephone handset (portable handset) even from a certain service area away from the car. This has the effect of further increasing the mobility and mobility of the car phone.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a mobile telephone according to the present invention. -1... Car phone base station 2... Mobile antenna for car phone 8...
...Integrated transmitter/receiver for car phone and cordless telephone base unit 4.Life...Mobile antenna for cordless telephone 5...Cordless telephone handset (portable handset) 6...・Car 8...Communication between the cordless telephone base unit and handset
Possible distance

Claims (1)

[Scope of Claim] A car phone having a mobile antenna for a car phone and capable of talking to a general subscriber phone via a car phone base station, comprising: a mobile antenna for a cordless telephone, and a cordless phone integrated with the car phone. A car phone characterized by being equipped with a telephone base unit and a cordless telephone handset.