JPH04348651A - Radio telephone set - Google Patents

Abstract

PURPOSE:To send and receive a data even during talking. CONSTITUTION:An inputted analog audio signal is converted into a digital signal at an A/D converter circuit 101. An identification circuit 103 identifies a voiced block of the digital signal from an unvoiced block of the signal. A control section 106 based on the result of identification uses control signals 111, 112 to convert the speed of the digital signal at a transmission burst circuit 102 and generates a voiced burst signal and an unvoiced burst signal and they are given to a transmitter-receiver 107. Moreover, the control section 106 uses the control signal 113 to allow the reception burst circuit 105 to convert the speed of the voiced burst signal in an output signal of the transmitter-receiver 107 and a D/A converter circuit 104 converts the signal into an analog voice signal and the result is outputted and the unvoiced burst signal is decoded so as to be recognized through the display.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention is utilized in a radio telephone device for radio telephone communication. In particular, the present invention relates to a cordless telephone in an office cordless system and a wireless telephone device that transmits and receives data when there is no sound during a call between a cordless telephone and a connecting device.

0002

2. Description of the Related Art FIG. 6 is a block diagram of a conventional wireless telephone device. FIG. 7 is a block diagram of an office cordless system using a wireless telephone device.

Conventionally, in wireless telephone devices, as shown in FIG. 6, MSK data signals are sent on the same signal line 207 as voice signals. Whenever an MSK data signal is sent, such as when the phone is on hold, the MSK data can be heard from the analog audio signal at the output terminal 110, which is unpleasant to the ears, so MSK data is not sent during a call on the cordless telephone.

In FIG. 7, a main device (ME) 400 accommodates outside lines 411, 412, 413 and controls the entire system, and connects connecting devices (CE) 310, 320 to wires 421, 413.
22, the cordless telephones 210, 22
Connect wirelessly to 0.

[0005] The office cordless system has a connecting device 3.
10, 320, cordless telephone 2
10 and the cordless telephone 220 can make an extension call. Here, when there is an incoming call on the outside line 411 when the cordless telephone 210 and the cordless telephone 220 are on internal lines and there is no cordless telephone that answers the outside lines 411 to 413, the main device 400 connects the cordless telephone 210,
Since the telephone number 220 is on an extension line, the telephone ringing cannot make an incoming external call, and a superimposed sound is played on the receiver to notify the receiver of the incoming external call.

However, in this case, the main device 400 only outputs superimposed sound to the cordless telephones 210 and 220, and does not transmit line usage status display data indicating which outside line number the call was received. ,2
20 doesn't know which outside line number the call came from.

[0007] Furthermore, in the office cordless system,
Cordless telephones 210 and 220 can make and receive calls to outside lines, hold outside calls, and transfer outside calls. The cordless telephone 220 is on a call with the outside line 411 and the cordless telephone 220 puts the outside line 412 on hold.
0 away from your hand and there is an incoming call on the outside line 413, the main device 400 can notify the cordless telephone 210 that there has been an incoming outside line call, but the main device 400 can notify the cordless telephone 220 that it has received an outside call because it is away from your hand. cannot notify you of an incoming outside call using superimposed sound.

[0008] As mentioned above, the office cordless system cannot always display the line usage status on the cordless telephone during a call.

[0009]

[Problem to be Solved by the Invention] However, such conventional wireless telephone devices do not transmit line usage status display data during a call due to the harshness of the ear, and therefore cannot receive line usage status display data. There were drawbacks.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks and aims to provide a wireless telephone device that can transmit and receive data even during a call.

[0011]

[Means for Solving the Problems] The present invention provides an input terminal for inputting an analog audio signal, a transmitting/receiving means for transmitting and receiving a wireless signal, a control section for controlling transmission and reception of the transmitting/receiving means, and an input terminal for outputting an analog audio signal. an analog-to-digital conversion circuit that converts an analog audio signal from the input terminal into a digital audio signal and outputs the digital audio signal; and a sound section of the output digital audio signal of the analog-to-digital conversion circuit. an identification circuit for identifying a silent section, and a speed conversion of the output digital audio signal of the analog-to-digital conversion circuit based on an input first control signal to generate a sound burst signal and a silent burst signal, and send the signal to the transmitting/receiving means. and a transmission burst circuit for providing the first control signal based on the identification result of the identification circuit; The control unit includes a reception burst circuit that converts the speed of the voice burst signal and outputs the signal, and a digital-to-analog conversion circuit that converts the output signal of the reception burst circuit into an analog audio signal and supplies it to the output terminal. inputting the output signal of the means and determining whether the sound burst signal or the silent burst signal is present; when the sound burst signal is present, the second control signal is applied; and when the silent burst signal is present, the signal is displayed on a display that allows the signal to be recognized. It is characterized in that it includes means for decoding.

Further, in the present invention, the control section adds a sound identifier to the digital audio signal in the sound interval and adds a silence identifier to the data signal in the silent interval based on the identification result of the identification circuit. It may include means for additionally providing a control signal for generating the sound burst signal and the silent burst signal as the first control signal, and means for controlling the analog-to-digital conversion circuit and the digital-to-analog conversion circuit. .

[0013]

[Operation] The analog-to-digital conversion circuit converts the analog audio signal from the input terminal into a digital audio signal and outputs the digital audio signal. The identification circuit identifies the sound section and the silent section of the output digital audio signal of this analog-to-digital conversion circuit. The transmission burst circuit converts the speed of the output digital audio signal of the analog-to-digital conversion circuit based on the input first control signal, generates a sound burst signal and a silent burst signal, and supplies the signals to the transmitting/receiving means. The control section provides the first control signal based on the identification result of the identification circuit. The receiving burst circuit converts the speed of the sound burst signal among the output signals of the transmitting/receiving means based on the input second control signal and outputs the speed-converted signal. The digital-to-analog conversion circuit converts the input output signal of the reception burst circuit into an analog audio signal and supplies it to an output terminal. The control section inputs the output signal of the transmitting/receiving means, determines whether it is a sound burst signal or a silent burst signal, and when it is a sound burst signal, it provides the above-mentioned second control signal, and when it is a silent burst signal, it displays a display that allows this signal to be recognized. decipher.

[0014] As described above, data can be sent and received even during a call.

[0015]

Embodiments Examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a wireless telephone device according to an embodiment of the present invention. FIG. 2 is a circuit diagram of the identification circuit of the wireless telephone device of the present invention. FIG. 3 is a circuit diagram of the transmission burst circuit of the wireless telephone device of the present invention. FIG. 4 is a circuit diagram of the reception burst circuit of the wireless telephone device of the present invention.

In FIGS. 1 to 4, the radio telephone device includes an input terminal 109 for inputting an analog voice signal, a transceiver 107 and an antenna 108 as transmitting/receiving means for transmitting and receiving radio signals, and a transmitting/receiving control of the transmitting/receiving device 107. Control unit 106 and output terminal 1 that outputs an analog audio signal
10.

The feature of the present invention is that an analog-to-digital conversion circuit 10 converts an analog audio signal from an input terminal 109 into a digital audio signal and outputs the digital audio signal.
1, an identification circuit 103 that identifies a sound section and a silent section of the output digital audio signal of the analog-to-digital conversion circuit 101, and a control signal 1 as an input first control signal.
Analog-digital conversion circuit 10 based on 11 and 112
Transmitter/receiver 1 converts the speed of the output digital audio signal of 1 to generate a sound burst signal and a silent burst signal.
07, and the control unit 106 transmits the control signal 1 based on the identification result of the identification circuit 103.
11, 112, and converts the speed of a sound burst signal among the output signals of the transceiver 107 based on a control signal 113 as an input second control signal and outputs the signal; The output signal of the circuit 105 is converted into an analog audio signal and output to the output terminal 110.
and a digital-to-analog conversion circuit 104,
The control unit 106 inputs the output signal of the transceiver 107, determines the sound burst signal and the silent burst signal, provides a control signal 113 when it is the sound burst signal, and recognizes this signal when it is the silent burst signal. The purpose of the present invention is to include means for decoding the display into a possible display.

Further, the control unit 106 adds a sound identifier to the digital audio signal in the sound interval and adds a silence identifier to the data signal in the silent interval based on the identification result of the identification circuit 103. A control signal 111 generates a sound burst signal and a silent burst signal.
112, and means for controlling the analog-to-digital conversion circuit 101 and the digital-to-analog conversion circuit 104.

Further, the identification circuit 103 includes a digital comparator 130, and the transmission burst circuit 102 includes a F
The reception burst circuit 105 includes an IFO 131 and an adder 132, and a FIFO 133.

The operation of the radio telephone device having such a configuration will be explained. FIG. 5 is a diagram showing the operation of the wireless telephone device. 5(a) is a burst signal, FIG. 5(b) is an analog audio signal, FIG. 5(c) is a sound burst signal, and FIG.
d) shows a silent burst signal.

In FIG. 1, in order to transmit data during a silent period during a call, it is necessary to detect a silent period of voice. For this purpose, analog-to-digital conversion circuit 1
01 converts an input analog audio signal into a digital signal under the control of the control unit 106.

The identification circuit 103 identifies the sound period and the silent period of this converted digital signal, and the transmission burst circuit 102 converts the speed of this digital signal based on the control signals 111 and 112 to convert it into a sound burst signal. Outputs a silent burst signal.

[0023] The identification circuit 103 is a circuit for detecting voice.
Figure 2 shows a specific circuit. The identification circuit 103 is realized by a digital comparator 130, and inputs the digital audio signal from the analog-to-digital conversion circuit 101.
As shown in B), it is determined whether the input audio level is lower or higher than a predetermined level for each frame 1 to 3, and a sound interval signal or a silent interval signal for each frame is output to the control unit 106. .

Here, frames 1 and 2 are determined to be a sound section because the voice level is high, and frame 3 is determined to be a silent section because the voice level is low in all frames, and the controller 106 determines that there is no voice. send to

The control unit 106 controls the transmission burst circuit 102 based on the voice presence/absence information from the identification circuit 103 to generate a voice burst signal cy and a silent burst signal cn shown in FIG. 5(C). Transmitter/receiver 107 wirelessly transmits this burst signal via antenna 108.

The specific circuit of the transmission burst circuit 102 is as follows.
The FIFO 131 shown in FIG. 3 can be used to input the sound identifier and silent identifier shown in FIG.
and a silent burst signal cn are generated and output to the transceiver 107.

When the control unit 106 receives a burst signal on the receiving side of the transceiver 107, it determines whether the burst signal is a voiced burst signal cy or a silent burst signal cn, and if it is a voiced burst signal cy, , control signal 11
3, the receiving burst circuit 105 converts the speed, the digital-to-analog conversion circuit 104 converts the signal into an analog audio signal, and outputs the signal to the output terminal 110. Further, in the case of the silent burst signal cn, the data signal of the silent burst signal cn is decoded without causing the digital-to-analog conversion circuit 104 to output the data signal.

As described above, since nothing other than the audio data signal is output as an analog audio signal, there is no sound when there is no sound.

The concrete circuit of the reception burst circuit 105 is as follows.
This can be realized by the FIFO 133 shown in FIG.

As described above, since data transmission is possible during silence during a call, information on the line usage status and messages can be sent during the call, as well as other transmission power control and memo facsimile.

[0031]

As explained above, the present invention has an excellent effect of allowing data to be transmitted and received even during a call. Therefore, line usage status data and message data can be sent during a call, data can be sent during a call to control transmission power, and facsimile data such as memo facsimile can be sent while a call is being made. It has the advantage that the sound is not audible and does not bother the ears.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a wireless telephone device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of an identification circuit of the wireless telephone device of the present invention.

FIG. 3 is a circuit diagram of a transmission burst circuit of the wireless telephone device of the present invention.

FIG. 4 is a circuit diagram of a reception burst circuit of the wireless telephone device of the present invention.

FIG. 5 is a diagram showing the operation of the wireless telephone device of the present invention.

FIG. 6 is a block diagram of a conventional wireless telephone device.

FIG. 7 is a configuration diagram of an office cordless system including a wireless telephone device.

[Explanation of symbols]

101 Analog-to-digital conversion circuit 102 Transmission burst circuit 103 Identification circuit 104 Digital-to-analog conversion circuit 105 Reception burst circuit 106, 106A Control section 107, 107A Transmitter/receiver 108, 108A Antenna 109 Input terminal 110 Output terminal 130 Digital comparator 131, 133 FIFO 132, 202 Adder 201, 206 Amplifier 205 MSK modem 207 Signal line 210, 220 Cordless telephone 310, 320 Connection device 400 Main device 411 to 413 Outside line 421, 422 Wired cy Voice burst signal cn Silent burst signal

Claims (2)

[Claims] 1. A wireless telephone comprising an input terminal for inputting an analog audio signal, a transmitting/receiving means for transmitting and receiving a wireless signal, a control section for controlling transmission and reception of the transmitting/receiving means, and an output terminal for outputting an analog audio signal. In the apparatus, an analog-to-digital conversion circuit that converts an analog audio signal from the input terminal into a digital audio signal and outputs the digital audio signal, and an identification circuit that identifies a sound section and a silent section of the output digital audio signal of the analog-to-digital conversion circuit. and a transmission burst circuit that converts the speed of the output digital audio signal of the analog-to-digital conversion circuit based on the input first control signal, generates a sound burst signal and a silent burst signal, and provides the generated sound burst signal and silent burst signal to the transmission/reception means, The control section includes means for providing the first control signal based on the identification result of the identification circuit, and speed-converts the sound burst signal among the output signals of the transmitting/receiving means based on the input second control signal. and a digital-to-analog conversion circuit that converts the output signal of the reception burst circuit into an analog audio signal and supplies it to the output terminal, and the control section inputs the output signal of the transmission/reception means and outputs the signal. It is characterized by comprising means for determining whether the sound burst signal is the sound burst signal or the soundless burst signal, and when the sound burst signal is the sound burst signal, the second control signal is applied, and when the sound burst signal is the sound burst signal, the signal is decoded into a recognizable display. wireless telephone equipment. 2. The control unit adds a sound identifier to the digital audio signal in the sound interval and adds a silence identifier to the data signal in the silent interval based on the identification result of the identification circuit. 2. The radiotelephone device according to claim 1, further comprising means for providing a control signal for generating a sound burst signal and a silent burst signal as the first control signal, and means for controlling the analog-to-digital conversion circuit and the digital-to-analog conversion circuit. .