JP2797041B2 - Connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device for connecting a cordless telephone to a vehicle-mounted mobile device body constituting a mobile telephone, that is, a so-called adapter.

[0002]

2. Description of the Related Art In general, an automobile telephone comprises an on-vehicle mobile unit that transmits and receives data to and from a base station, and an on-board terminal connected to the mobile unit.

[0003]

The handset of the in-vehicle terminal in such a conventional car telephone is connected by a wire, so that, for example, the car is stopped and transmitted from a remote place outside the car. It was inconvenient to talk on the phone with the receiver.

[0004] For this reason, the mobile phone body of the automobile telephone has:
It is conceivable that a cordless telephone can be connected and a cordless telephone handset can be taken out of the vehicle so that a telephone call can be made. However, there has been no adapter for such connection.

Further, in order to connect the cordless telephone to the main body of the mobile device, a special circuit for an interface may be provided in the cordless telephone, that is, a dedicated cordless telephone may be used. Since the cordless telephone is limited, it cannot be used easily, which is not desirable.

The present invention has been made in view of the above points, and has as its object to enable a general cordless telephone to be connected to a mobile unit of an automobile telephone.

[0007]

In order to achieve the above-mentioned object, the present invention is configured as follows.

[0008] That is, the present invention provides a connection device for connecting a cordless telephone to the mobile unit main body of an automobile telephone comprising a vehicle-mounted mobile unit body and a vehicle-mounted terminal connected to the mobile unit body. A communication circuit for converting a communication path between a mobile device main body for four-wire communication and a cordless telephone for two-wire communication, a DC supply circuit for supplying DC to the communication path of the cordless telephone, An off-hook state detection circuit that detects an off-hook state of the cordless telephone and outputs a detection signal, an incoming signal generation circuit that generates an incoming signal in response to the drive signal and supplies the incoming signal to the cordless telephone, and a dial signal from the cordless telephone. A dial detection circuit for detecting and outputting the corresponding dial data, and controlling the detection signal, the dial data and the mobile unit body A signal is input, the drive signal and a control signal to the mobile device main body are output, and the control signal for controlling outgoing call, incoming call, and the like is transmitted to and received from the mobile device main body. And a control unit.

[0009]

According to the above construction, the connection device is a control unit for transmitting and receiving control signals necessary for making and receiving calls to and from the mobile device main body, a communication circuit for converting a communication path into two-wire to four-wire, and the like. Therefore, the mobile device main body and a general cordless telephone can be easily connected via this connection device.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention.

In general, an automobile telephone comprises an in-vehicle mobile unit 1 for transmitting and receiving data to and from a base station, and an in-vehicle terminal 2 connected to the mobile unit 1. The main body 1 and the in-vehicle terminal 2 are composed of first connection terminals 1 ₁ and 2 _{1 for} a transmission audio signal, second connection terminals 1 ₂ and 2 ₂ for a transmission audio signal ground, and a third connection terminal 1 for a reception audio signal.
_3, 2 _3, the received audio signal the fourth connection terminal 1 ₄ for ground,
2 _4, the fifth connection terminal 1 ₅ for the upper serial signal as a control signal, 2 _5, likewise sixth connecting terminal 1 ₆ for the lower serial signal as a control signal, 2 _6, 7 connecting terminal 1 of the power-off _7, 2 _7, and the eighth power source (+ 13.8V) for, 10 connecting terminal 1 _8, 2 _8, 1 _10, 2 ₁₀ and the ninth connecting terminal 1 ₉ for ground, 2 ₉ respectively. This mobile device body 1
The in-vehicle terminal 2 is the same as the conventional example.

The adapter 3 which is the connection device of this embodiment
In order to connect the main unit of the general cordless telephone 4 to the mobile unit 1,
First to 10 corresponding to the connection terminals ₁ 1 to 1 ₁₀ of the 10
It has connection terminals 3 _{1 to} 3 _10, and also has line connection terminals 4 ₁ and 4 ₂ and a power supply terminal 4 of the base unit of the cordless telephone 4.
_3, 4 ₄ and a connection terminal 5 ₁ to 5 ₄ corresponding to.

The adapter 3 further includes a communication circuit 6 for converting a communication path between the mobile unit 1 for 4-wire communication and the cordless telephone 4 for 2-wire communication, and a cordless telephone 4
A DC supply circuit 7 for supplying a direct current to the communication path, a closing detection circuit 9 as an off-hook state detection circuit for detecting an off-hook state of the cordless telephone 4 and outputting a detection signal to a control section 8 described below, and a control section. 8, a closing circuit 10 for turning on / off a communication path between the cordless telephone 4 and the communication circuit 6 based on the output signal of the cordless telephone 4 and generating an incoming signal in response to a driving signal from the control unit 8 at the time of an incoming call. Cordless telephone 4
An incoming signal generation circuit 11 for supplying a dial signal from the cordless telephone 4, a tone receiver 12 as a dial detection circuit for outputting corresponding dial data to the control unit 8, and a control signal from the mobile device body 1. Is input and the mobile device body 1
Output a serial signal as a control signal to
And a control unit 8 for controlling each unit.

The control unit 8 is constituted by a microcomputer, and transmits and receives a serial signal for controlling transmission and reception, etc., with the mobile unit 1 as described later.

The adapter 3 has two power supply circuits 13 and 14 for supplying the power from the mobile unit 1 to the inside of the adapter 3 and to the cordless telephone 4. A power switch 15 for turning on the power is provided, and the power of the mobile device body 1 is turned on by the power switch 15 during use.

On the other hand, the base unit of the cordless telephone 4 has the same configuration as that of the conventional example, and has a line interface 16 such as a speech network, a power supply circuit 17, and the like.

Next, the basic operation when the base unit of the cordless telephone 4 is connected to the main unit 1 of the mobile unit via the adapter 3 having the above configuration, that is, outgoing call, incoming call, call and end of call by the cordless telephone 4 This will be described based on a flowchart.

First, the transmission operation will be described with reference to the flowchart of FIG. When the user goes off-hook the cordless telephone 4 to make a call, the cordless telephone 4 forms a DC loop, and the closing detection circuit 9 is turned on to detect the off-hook (step n1). Control unit 8 in response to this is to form a speech path for calls by turning on the閉結circuit 10 (step n2), further, the fifth connection terminal 3 _5, 1 ₅ to the mobile device body 1 A hook switch (start) signal is transmitted by the upper serial signal via the upper serial signal to inform the mobile unit 1 that the off-hook has been performed (step n3).

[0020] Thus, the mobile device body 1 through the third connection terminal 1 _3, 3 ₃ sends a dial tone, which is speech circuit 6 and the connecting terminals 5 _1, 5 _2, 4 _1, 4 ₂ The user listens to the information on the cordless telephone 4 via the telephone. At this time, the control unit 8 enters a state of waiting for dial data from the tone receiver 12 (step n4). When a dial signal corresponding to a user's dial operation is detected by the tone receiver 12 and given to the control unit 8 as dial data (step n6), the control unit 8 sends the dial data to the mobile device body 1 by the upper serial signal. (Step n7), and after the specified dial data is transmitted,
When the on-call display ON signal is transmitted from the mobile device body 1 to the control unit 8 by the lower serial signal (step n5), the control unit 8 cancels the dial standby state (step n).
8). At this time, the third ring tone from the connection terminal 1 ₃ of the mobile device body 1 and is sent, this user can listen cordless telephone 4, if off-hook is the counterpart,
The call starts.

Next, the incoming call operation will be described with reference to the flowchart of FIG.

When there is an incoming call, an incoming call display ON signal is output from the mobile unit 1 by a lower serial signal, and when this signal is received by the control unit 8 (step n 1), the control unit 8 drives the incoming signal generation circuit 11. outputs a signal, the incoming signal generation circuit 11, connects the incoming signal 16Hz terminals 5 _1, 5 _2,
4 _1, 4 ₂ sends to the cordless telephone set 4 via the (step n2). Next, when the user goes off-hook the cordless telephone 4 in response to the incoming call, it is detected by the closing detection circuit 9 (step n3), and the control unit 8 causes the incoming signal generation circuit 11 to generate the incoming signal. It is stopped (step n4) and the closed circuit 10 is turned on (step n5), whereby a communication path between the adapter 3 and the cordless telephone 4 is formed. At this time, a hook switch (start) signal is sent to the mobile device body 1 by the upper serial signal to notify that the mobile phone has been off-hook (step n6). On the other hand, when the ON signal is displayed during the call display by the lower serial signal from the mobile unit 1 and received by the control unit 8 (step n7), the communication path in the mobile unit 1 is formed. , The call is started.

Further, the operation of ending a call will be described with reference to the flowchart of FIG.

When the user of the cordless telephone 4 goes on-hook, the DC loop is opened, and the
Is turned off and on-hook is detected (step n1), and the control unit 8 turns off the closing circuit 10 to disconnect the communication path (step n2). At this time, a hook switch (end) signal is transmitted to the mobile device body 1 by the upper serial signal to notify that the mobile phone has been on-hook (step n3). As a result, the mobile device body 1 performs an operation for ending the call, transmits a call-in-progress display off signal by a lower serial signal, and the control unit 8 returns to the standby state.

When the other party of the call hangs up first, a call-in-progress display off signal is transmitted from the mobile unit 1 by a lower serial signal. At this time, a busy tone and a howler sound are transmitted by the received voice signal. Then, since the user can listen to it, the user can end the call by the same steps n1 to n3 as described above.

In this way, it is possible to easily connect the ordinary cordless telephone 4 to the mobile unit main body 1 to make a call, and therefore, it is possible to take the cordless telephone 4 out of the vehicle and take a call from a remote place. It is possible and very convenient.

Further, the adapter 3 of this embodiment corresponds to the _first to _tenth connection terminals 21 to 210 of the on-vehicle terminal 2 so that the mobile unit main body 1 and the on-vehicle terminal 2 can be connected. first to tenth connecting terminals 20 ₁ to 20 ₁₀ and have, between the connecting terminals 3 ₁ to 3 ₁₀ of the mobile device body 1 includes an amplifier 21, such as capacitors 23 and a buffer 24 is interposed At the same time, transmission and reception of upper and lower serial signals are performed via the control unit 8.

As an adapter according to another embodiment of the present invention, only the mobile unit 1 and the cordless telephone 4 may be connected.

In the above-described embodiment, the power of the cordless telephone 4 is supplied from the adapter 3, but the power supply circuit 14 may be omitted by taking the power of the cordless telephone 4 from another place. .

[0030]

As described above, the connection apparatus of the present invention converts a control unit and a communication path for transmitting and receiving control signals necessary for transmission and reception to and from a mobile device main body, and converts the communication path into a 2-wire to 4-wire system. Since it has a communication circuit and the like, it is possible to easily connect the mobile device body and a general cordless telephone through this connection device, thereby allowing the user to take the cordless telephone handset out of the vehicle. This makes it possible to make a call from a remote place, which is very convenient.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining an operation at the time of calling;

FIG. 3 is a flowchart for explaining an operation at the time of an incoming call;

FIG. 4 is a flowchart for explaining an operation at the end of a call;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mobile device main body 2 In-vehicle terminal 3 Adapter (connection device) 4 Cordless telephone 6 Talk circuit 7 DC supply circuit 8 Control unit 9 Closing detection circuit (off-hook state detection circuit) 11 Incoming signal generation circuit 12 Tone receiver (Dial detection circuit) )

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 1/00-1/78 H04B 7/24-7/26 H04Q 7/00-7/38

Claims (1)

(57) [Claims] 1. A connection device for connecting a cordless telephone to the mobile device body of an automobile telephone comprising a vehicle-mounted mobile device body and a vehicle-mounted terminal connected to the mobile device body, A communication circuit for converting a communication path between the main body of the four-wire telephone call and a cordless telephone for the two-wire communication; a DC supply circuit for supplying DC to the communication path of the cordless telephone; and an off-hook of the cordless telephone. An off-hook state detection circuit that detects the state and outputs a detection signal, an incoming signal generation circuit that generates an incoming signal in response to the drive signal and supplies it to the cordless telephone, and detects and responds to a dial signal from the cordless telephone A dial detection circuit that outputs dial data to be input, and the detection signal, the dial data, and a control signal from the mobile device body are input. A control unit that outputs the drive signal and a control signal to the mobile device main body, and transmits and receives the control signal for controlling outgoing call, incoming call, and the like with the mobile device main body. A connection device, comprising: