JPS63185238A - Radio telephone system - Google Patents

Abstract

PURPOSE:To perform call display with the call display means of a radio telephone set, by supplying a pseudo incoming detecting signal to a control signal sending means as an incoming detecting signal when an internal call input/output means is operated. CONSTITUTION:When a caller depresses the internal call switch 35 of a connection device 20 in a waiting state, the pseudo incoming detecting signal is generated from the internal call switch 35 only in an operated period, and is supplied to a control circuit 310. While the pseudo incoming detecting signal is generated, a control signal is sent from a transmitter 22 to a radio circuit 3 via a transmission antenna 26. In the control circuit 520 of the radio telephone set 40, the control signal for calling is received with a receiver 43, and from a sounder 53, an intermittent ringing sound is generated corresponding to the depressing operation of the internal call switch 35.

Description

[Detailed Description of the Invention] [Purpose of the Invention (Industrial Field of Application) The present invention relates to a wireless telephone device connected to a wired line such as a subscriber line, and particularly to an improvement of a device having an internal calling function. Regarding.

(Prior Art) Conventionally, there are the following devices as this type of device. FIG. 3 shows its configuration, and this device is composed of a connecting device 2 connected to a subscriber line 1 and a wireless telephone 4 connected to this connecting device 2 via a wireless line 3. .

The connection device 2 is equipped with a transmitter 1 (TX) 22 and a receiver (RX) 23 for which transmission and reception channels are specified by a synthesizer (SYN) 21, and receives a call from the other party's terminal via the subscriber line 1 during a call. After passing through the signal tone line relay 24 and the hybrid circuit 25, the signal tone is modulated by the transmitter 22 and sent from the transmitting antenna 26 to the radio line 3, and the radio communication signal tone receiving antenna 27 arrives from the radio telephone 4 via the radio line 3. After demodulating in the receiver 23 via the above hybrid circuit 25 and line relay 24
It is sent to subscriber line 1 via.

The connection device 2 also serves as a circuit necessary for connection between the subscriber line 1 and the wireless telephone 4, and is connected to the
It includes an incoming call detection circuit 28 that detects a Hz ringing signal tone, and a control circuit (CONT) 31. The control circuit 31 is
For example, it has a microcomputer as a main control section, and performs various connection controls related to connection operations. still,
32 is a rectifying and stabilizing circuit that generates a predetermined operating voltage Vcc from the commercial power supply output and connects this operating voltage VCC to the connecting device 2.
It is supplied to each circuit in the wireless telephone 4 through the power supply terminal 33 as a charging voltage.

On the other hand, the radio telephone 4 is equipped with a transmitter 1N (TX) 42 and a receiver (RX) 43 for which transmission and reception channels are specified by a synthesizer (SYN) 41, similar to the connection device 2 described above. The incoming wireless communication signal sound is received and demodulated by the receiver 43 via the receiving antenna 44, and then output as voice from the receiver 45, and is also transmitted to the transmitter 4.
After being modulated by the call signal tone transmitter 42 input from 6, it is sent to the wireless line 3 via the transmitting antenna 47.

Furthermore, this radio telephone 4 includes a transmission switch 48, a circuit necessary for connection between the connection device 2 and the exchange.
It is provided with a dial key 49, a control circuit (CONT) 52 which uses a microcomputer as a main control unit and performs various connection controls, and a sounder 53 which generates a sound. In addition, 5
Reference numeral 4 denotes a battery, which is charged by the operating voltage Vcc supplied from the connection device 2 via the charging terminal 55.

In such a configuration, when an incoming signal arrives via the subscriber line 1, the connecting device 2 detects the incoming signal tone with the incoming call detection circuit 28, transmits the incoming call detection signal to the control circuit 31, and the control circuit 31 outputs the incoming call signal to the synthesizer. 21 to indicate an empty transmitting/receiving channel, the transmitter 22 and the receiver 2 are operated, and a control signal tone is sent to the radio telephone 4 to notify the radio telephone 4 of the occurrence of the incoming call. On the other hand, the radio telephone 4 performs an intermittent reception operation with the receiver 43 while on standby, and when the control signal for incoming call notification arrives from the connection device 2 in this state, the control circuit 52 controls the synthesizer 41.
The transmitter 42 and the receiver 4
3 are brought into a continuous operating state, the incoming call response signal tone is returned to the connection device 2, and a ringing tone is generated from the sounder 53 to notify the subscriber of the occurrence of an incoming call. When the subscriber responds to this call by turning on the calling switch 48, a message to that effect is sent from the transmitter 42 of the wireless telephone 4 to the connecting device 2, and as a result, the connecting device 2
Turn on. Thus, the wireless telephone 4 and the caller are connected, and communication between the two is possible thereafter.

On the other hand, in the standby state, when the subscriber turns on the transmission switch 48 of the radio telephone 4, the radio telephone 4 uses the control circuit 52 to instruct the synthesizer 41 to a specific transmission/reception channel, thereby transmitting the transmitter 42 and the receiver 43. are operated continuously, and a transmission signal tone is sent to the connecting device 2. On the other hand, when a transmission signal arrives from the wireless telephone 4, the connection device 2 detects it with the transmission signal tone control circuit 31, creates a transmission response signal tone, and sends the transmission response signal tone to the transmitter 2 along with the instruction information of the transmission/reception channel. The information is then sent back to the wireless telephone 4, thereby causing the wireless telephone 4 to set a transmission/reception channel for telephone calls. After this control, the line relay 24 is turned on to close the DC loop of the subscriber line 1. Furthermore, when the subscriber inputs the telephone number of the other party using the dial key 49 in this state, the wireless telephone 14 sends the key code data from the transmitter 42 to the connecting device 2 via the wireless line 3. As a result, the control circuit 3 of the connection device 2
1 controls the opening and closing of the line relay 24 in accordance with the key code data to transmit dial pulses to the subscribed line 1. A call is then made to the desired party, and if the called party responds, the radio telephone 4 and the called party are subsequently connected and a conversation is possible.

That is, by using such a device, it is possible to make a call in exactly the same way as when using a normal wired telephone that is directly connected to the subscriber line 1.

By the way, recently this type of device has been used to connect device 2 in addition to receiving calls.
It has been considered to provide a so-called internal calling function for calling the wireless telephone 4 from the wireless telephone 4. That is, the connection device 2 is provided with a switch 34 for internal calling, the operation signal sound of this internal calling switch 34 is supplied to the control circuit 31, the control circuit 31 creates a control signal sound for internal calling, and this control signal sound is It is sent from the transmitter 22 to the wireless channel fIa3. In addition, in the wireless telephone 4, the internal calling control signal tone control circuit 5 performs identification detection, and when the internal calling control signal tone is detected, the internal calling tone signal tone is supplied to the sounder 53 to generate a ringing sound. generate. If such a function is provided, the internal call switch 34 of the connection device 2 can be activated, for example, when the connection device 2 and the wireless telephone device 4 are placed in different rooms or far apart. By operating the wireless telephone 4, a person near the wireless telephone 4 can be called. That is, it can be used as a simple intercom having only a calling function from the connecting device 2 to the wireless telephone device 4.

However, in such a conventional device, the control circuit 31 of the connection device 2 must generate a control signal tone exclusively for internal calls, and the control circuit 52 of the wireless telephone 4 must generate the control signal tone for internal calls and other signals. Since it is necessary to provide a means for identifying and detecting the control signal, there are problems in that the number of control contents of each control circuit 31, 52 increases, the control procedure becomes complicated, and the capacity of the memory for storing the control program increases. Ta.

(Problems to be Solved by the Invention) As described above, the conventional device has the problem of complicating the control procedure of the connecting device and the wireless telephone and increasing the memory capacity as a result. Focusing on this point, the present invention attempts to provide a wireless telephone device that allows internal calls to be made without providing a control signal tone for internal calls, thereby simplifying control procedures and reducing memory capacity. be.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a connection device with an incoming call detection means for detecting an incoming signal sound arriving via a wired line, and an incoming call detection signal generated from the incoming call detection means. and control signal sending means for creating a control signal tone for calling and transmitting it to the wireless telephone when the wireless telephone receives a calling control signal from the control signal transmitting means of the connection device, and displays a call indication when the wireless telephone receives a control signal for calling from the control signal transmitting means of the connection device. In a radio telephone device equipped with a call display means, as shown in FIG. 1, the connection device is provided with an internal call input means A and an internal call signal generation means B, and when the internal call input means A is operated, The internal ringing signal generating means B generates a pseudo incoming call detection signal sound and supplies this signal sound as the incoming call detection signal to the first stage of the control signal sending means 9, whereby the control signal generating means produces the same υ11II signal sound as when the incoming call occurs. The call is generated and transmitted to the radio telephone, and the call display means of the radio telephone displays the call.

(Function) As a result, when the pseudo incoming call detection signal is generated from the internal calling signal generating unit B, the control signal sending means of the connected device creates the same control signal tone for calling as when the incoming call detection signal is generated. This eliminates the need for control procedures for creating and transmitting the control signal tone for internal calls, and eliminates the need for the wireless telephone to distinguish the control signal tone for internal calls from other control signals. This simplifies the control procedure for the connecting device and the radio telephone and reduces the memory capacity.

(Embodiment) FIG. 2 shows the configuration of a wireless telephone device in an embodiment of the present invention. In this figure, the same parts as those in FIG. 3 are given the same reference numerals and detailed explanations will be omitted.

The connection device 20 is provided with an internal call switch 35 that is a non-locking key switch.

This internal call switch 35 generates a pseudo incoming call detection signal sound that is the same as the incoming call detection signal generated from the incoming call detection circuit 28 while the key is pressed. Further, the pseudo incoming call detection signal generated from the internal call switch 35 is wire-ORed with the incoming call detection signal generated from the incoming call detection circuit 28, and then supplied to the control circuit 310.

With such a configuration, when the caller presses and operates the internal call switch 35 of the connection device 20 in the standby state, a pseudo call detection signal is generated from the internal call switch 35 only during the operation period, and this pseudo call detection signal is supplied to the control circuit 310 via the wired OR section. Then, the control circuit 310 recognizes the above-mentioned pseudo call detection signal as the call detection signal, and accordingly, during the period in which the above pseudo call detection signal is generated, that is, in response to the intermittent of the pseudo call detection signal, the control circuit 310 generates a ringing control signal sound. This control signal tone is transmitted from the transmitter 22 to the wireless line 3 via the transmitting antenna 26. On the other hand, the control circuit 52 of the wireless telephone 40
0, when a control signal for calling is received by the receiver 43 and it is determined that this control signal tone is a signal for incoming call notification, an intermittent ringing signal tone is generated in response to this control signal and supplied to the sounder 53. do. As a result, the sounder 53 generates an intermittent ringing sound in response to the pressing operation of the internal call switch 35. Here, since the ringing sound generated when an incoming call occurs is intermittent with the cycle of the incoming call signal (16 Hz), the ringing sound during the above-mentioned internal call is clearly different from the ringing sound when an incoming call occurs. Therefore, people nearby can clearly distinguish the internal call from the connection device 2o from an incoming call.

As described above, in this embodiment, since the internal call switch 35 generates the same signal sound as the incoming call detection signal and wires it with the parentheses signal sound incoming detection signal and supplies it to the control circuit 310, the control circuit 3. 10, even when an internal calling signal is supplied, the same control procedure as when an incoming call detection signal is supplied can be used to create and send the calling control signal sound. Since no control procedure is required, the control procedure of the control circuit 310 is simplified compared to the conventional one, and the capacity of the memory for storing the program is also reduced. Also, in the wireless telephone 40,
Since the control circuit 520 does not need to distinguish the internal call control signal sound from the control signal for incoming call notification, the valve control procedure is simplified and the memory capacity is reduced. Further, in this embodiment, the control circuit 310 creates a control signal tone in response to the intermittent incoming call detection signal and the pseudo incoming call detection signal, and the control circuit 520 of the wireless telephone 40 generates a sound in response to the intermittence of the control signal. Since it was made to be intermittent, the ringing sound when an incoming call occurs and the l+! when an internal call occurs. It is possible to clearly distinguish between sound and sound without using special means such as changing the frequency.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the signal from the internal call switch 35 (pseudo incoming call detection signal) and the incoming call detection signal are supplied to the control circuit 310 by wire-ORing them.
The signal may be supplied to the control circuit through an OR circuit. Further, as the call display means, in addition to generating a sound, a visual display such as a light emitting diode may be used. others,
The structure of the internal call input means and the internal call signal generation means, the control contents and control procedure of the control signal sending means, the structure of the connection device and the wireless telephone, etc. may be modified in various ways without departing from the gist of the present invention. can.

[Effects of the Invention] As detailed above, according to the present invention, the connecting device is provided with an internal call input means and an internal call signal generation means, and when the internal call input means is operated, the internal call signal is generated. The generation means generates a pseudo incoming call detection signal sound, and supplies this signal sound as the incoming call detection signal to the IIJ 1m signal sending means, which causes the control signal generation means to generate the same control signal sound as when an incoming call occurs, and transmits the sound to the wireless telephone. By communicating the information to the user and displaying the call using the call display means of the wireless telephone, internal calls can be made without providing a control signal tone for internal calls, which simplifies control procedures and reduces memory capacity. It is possible to provide a wireless telephone device that can achieve the following.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing a wireless telephone device of the present invention;
FIG. 2 is a circuit block diagram showing the configuration of a wireless telephone device according to an embodiment of the present invention, and FIG. 3 is a circuit block diagram showing the configuration of a conventional wireless telephone device. DESCRIPTION OF SYMBOLS 1...Subscriber line, 3...Radio line, 20...Connection device, 40...Wireless telephone, 21.41...Synthesizer, 22.42...Transmitter, 23.43... ...Receiver, 24...Line switch, 25...Hybrid circuit, 26.47...Transmission antenna, 27.44
...Receiving antenna, 28...Incoming call detection circuit, 32.
... Rectification stabilization circuit, 35 ... Internal call switch, 4
5... Telephone receiver, 46... Transmitter, 48... Call switch, 49... Dial key, 53... Sounder, 54... Battery, 310.520... Control circuit.

Claims (2)

[Claims] (1) In a wireless telephone device consisting of a connecting device connected to a wired line and a wireless telephone connected to the connecting device via a wireless line, the connecting device is connected to the wired line. an incoming call detection means for detecting an incoming call signal; a control signal sending means for creating a control signal tone for calling and transmitting it to the radio telephone when an incoming call detection signal is generated from the incoming call detection means; an internal call input means; internal call signal generating means for generating a pseudo call detection signal when the internal call input means is operated and supplying the pseudo call detection signal to the control signal sending means as the call detection signal; A radio telephone device comprising a call display means for displaying a call when it is detected that a call control signal has arrived from the control signal sending means of the connecting device. (2) The control signal sending means transmits the discontinuation of the incoming call detection signal and the pseudo incoming call detection signal to the radio telephone by a control signal for calling, and the call display means makes a call in response to the discontinuity transmitted by the control signal for calling. The radio telephone device according to claim 1, characterized in that the display is intermittent.