JPH0856271A - Simultaneous data / voice transmission device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a device for apparently performing voice communication and data communication simultaneously on one telephone line. [Structure] In a transmission block 1, a voice signal and a data signal are input in parallel, and when there is a voice input, the data transmission controller 1
6 is provided with a transmission interruption signal, on the other hand, if a voice input is cut off, a voice transmission judging device 11 for transmitting a data signal transmission permission signal after a predetermined time delay by a timer 13 is provided. Tone signals are combined and output selectively. In the reception block 2, the signal is input to the comparator 24 through the two band-pass filters 23 corresponding to each tone signal, input to the data / voice switching unit 25 after being identified, and the reception signal restoration circuit 22 is input by this control signal. Selectively connect to.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes the idle time of voice exchange during line connection in an analog telephone line,
The present invention relates to an apparatus for efficiently transmitting binary-coded data during this period, and is particularly effective when transmitting a computer game program and data by only one subscriber telephone.

[0002]

2. Description of the Related Art Recently, a technique of transmitting binary coded data using a telephone line has been widely used. For example, facsimile communication and personal computer communication are widely used.

Here, in facsimile communication, the black and white tone difference on the surface of the communication paper is read, and this is replaced with a bit image to form a data string, which is modulated into an analog signal by a modem and then output to the telephone line.
In personal computer communication, a binary code handled by a computer is modulated into an analog signal by a modem and the analog signal is output to a telephone line. In these communications, the user can manually select voice communication and data communication on the transmission side, and the reception side can perform automatic reception depending on the type of signal. That is, if the receiving side receives a call signal, it outputs a standby signal for a certain period of time, if it receives a data communication identification signal during that time, it loads the signal that follows it, and switches to voice reception if the identification signal is not transmitted. It is a composition.

[0004]

Since the above-mentioned communication is carried out through an analog telephone line which is generally used at present, if there is a switching device, the voice communication and the data communication can be carried out by one telephone line. Can be shared. However, there is a complete alternative relationship in that the time zone in which one is selected cannot select the other. Therefore, in the case of personal computer communication as an example, when transmitting data, both the transmitting side and the receiving side select the modem input / output, and when the transmission is completed, conversation is performed after returning to voice communication by switching the switch etc. A very tedious procedure to do is required.

By the way, nowadays, data communication using a telephone line has become widespread, and there are many opportunities to have a conversation while viewing a document transmitted by a facsimile or displaying data on a display by computer communication. . However, if these are attempted to proceed at the same time by the above-mentioned configuration, eventually two telephone lines must be used to dedicate one for voice communication and the other for data communication, which requires extra lines. Therefore, there is a cost problem. Also, since binary coded data can be sent over a telephone line, computer game data can of course be transmitted, but it is extremely useful if you can receive a simple instruction by voice during transmission. It is convenient, but currently there is no such means.

The present invention is intended to solve these problems, and it is an object of the present invention to provide an apparatus capable of apparently simultaneously performing voice communication and data communication by using only one telephone line. In this way, while trying to transmit a game program and the like, an attempt is made to give instructions by voice.

[0007]

In the device of the present invention,
We focused on the occupancy ratio of communication time to connection time during voice communication. Generally about 30% of the time the line is connected
Is used effectively, and the remaining 70% is said to be idle time. On the other hand, the time required for data communication is
It is possible to process in a very short time by using a high speed modem. Therefore, by performing the data communication by utilizing the idle time in the non-call state, it is apparently transmitted at the same time.

Therefore, in the present invention, the device is first constructed by the transmission block and the reception block. Then, in the transmission block, the voice signal and the data signal are input in parallel, and at the same time when there is a voice input, a transmission interruption signal is sent to the data transmission controller. A means for transmitting a signal transmission permission signal is provided, and means for selectively outputting the signal to the telephone line after synthesizing tone signals of different frequencies with the above signals by the control of the voice transmission judgment device. I am using.

Further, in the receiving block, the received signal is inputted to the comparator through the two band filters corresponding to the respective tone signals, the received signal is discriminated and then inputted to the data / voice switcher, while the data A means for selectively connecting the received signal to the voice restoration circuit or the data restoration circuit by the control signal of the voice controller is used.

[0010]

In the transmission block, the transmission voice and the transmission data are input in parallel, but the voice transmission determination unit determines whether or not the voice signal is input, and according to this state, transmits the voice or transmits the data. To judge. Here, since the input state of the voice determines the output state of the voice transmission determination device, the action as the voice priority type is performed. Further, the timer delays the transmission timing of the data transmission permission signal, and achieves the function of securing the opportunity of data transmission by extracting only the original free time.

On the other hand, the receiving block identifies whether the received signal is a voice signal or a data signal and selectively outputs it to the respective restoration circuits. Two band-pass filters, a comparator and a data / voice signal are provided. The switch serves the function of identifying the signal. Then, based on this identification, the voice or data is restored to the original state.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the device of the present invention will be described in detail below with reference to the accompanying drawings. The device of the present invention is composed of a transmission block 1 and a reception block 2 as shown in FIG. Then, the transmission data D1 and the transmission voice S1 are input to the transmission block 1, and either one of them is selectively output to the isolator 3. Further, the reception signal output from the isolator 3 is input to the reception block 2, and the reception data D2 and the reception voice S2 are identified and output to a computer or a telephone in the subsequent stage. Therefore, data and voice can be simultaneously transmitted by connecting the two devices with a telephone line. Transmission voice S1
The received voice S2 is connected to the known telephone 4, and the transmission data D1 and the received data D2 are connected to the known computer device 5. The isolator 3 is a device having a function of separating the upstream signal and the downstream signal of the telephone line L into the transmission block 1 side and the reception block 2 side for input / output.

The transmission block 1 is configured as a voice signal priority type, and while the line L is connected, data transmission is performed by utilizing the time zone during which the transmission side caller is not performing voice communication. Here, 11 is a voice transmission determining device for determining the presence or absence of the transmission voice S1, which sets a constant threshold value between the voice level, that is, the noise level and the voice level, that is, the signal level. If it is at a high level, it is judged that there is sound, and if it is at a low level, it is judged that there is no sound, and the control signal C1 for switching the circuit is given to the changeover switch 12.
Is output. Reference numeral 13 is a delay timer for controlling the output timing of the control signal C1 in the case of no voice.
Here, the timer 13 is necessary because when the transmission voice S1 is present, the switch 12 must be immediately switched to prevent the voice from being cut off, but on the other hand, a reliable transmission condition is secured for data transmission. Because it must be. In general, it is rare to speak continuously without interruption during transmission, and there are small breaks in the state of no voice even during transmission. However, if the voice transmission determination unit 11 makes a faithful determination of this, the switch 12 switches frequently. This causes a hindrance to the dialogue and makes it impossible to secure a sufficient condition for data transmission. Therefore, the switch of the switch 12 for data transmission is delayed by the timer 13 for a certain period of time, data transmission is performed only in the original idle time, and smooth transmission is performed by immediate switching for voice communication. is there.

The transmission voice S1 is input to the mixer 14, and the tone signal A generated by the tone generator 15 is combined and then output to one terminal of the switch 12.

Next, reference numeral 16 is a data transmission controller, which outputs a data permission signal C1 by outputting a transmission permission signal C2 after a predetermined time delay by a timer 13 when the voice transmission judging device 11 judges that the voice signal is in a non-voice state. And modulator 1
Modulate at 7. Further, the data transmission controller 16 performs identification / error control so that the data transmission can be automatically restored when the data transmission is interrupted by the intervention of voice. On the contrary, when the voice transmission determining unit 11 determines that there is voice, the transmission interruption signal C3 is immediately output to interrupt the data transmission. The data is temporarily stored in the buffer in the data transmission controller 16 or the previous block, and the stored data is released in response to the transmission permission signal C2 or the transmission interruption signal C3. Further, the modulated data is combined with the tone signal B generated by the tone generator 19 in the mixer 18, and output to the other terminal of the switch 12. Here, the tone signals A and B function as pilot signals for identifying whether the combined signal is transmission data D1 or transmission voice S1.

Subsequently, the receiving block 2 can be roughly divided into blocks of a signal identifying means 21 and a signal extracting means 22. First, in the signal identifying means 21, 23a
Reference numeral 23b is a bandpass filter whose center frequency is the frequency corresponding to the tone signal A and the tone signal B, and the signal received through the telephone line L is input to the comparator 24 through both bandpass filters. The comparator 24 compares which of the signals from the both band filters 23a and 23b has a higher level, determines that the higher level is the tone signal of the signal currently being received, and determines that this is the tone signal of the subsequent stage. The data / voice switch 25 is instructed. That is, the bandpass filter 23a
When the output level is higher, it is considered that the signal (voice signal) in which the tone signal A is combined is received, and when the output level of the bandpass filter 23b is higher, the signal in which the tone signal B is combined (data signal). The control signal is output to the data / voice switching unit 25 as if it is receiving.

On the other hand, the received signal is connected to the midpoint of the two-contact receiving switch 26 located at the frontmost stage of the signal extracting means 22, and the tone B removing filter 27b, from the a contact.
The received data D2 is restored through a data restoration circuit including a demodulator 28 and a data reception controller 29, and is input to a computer or the like. Further, the received voice S2 is restored from the contact point b via the tone A removal filter 27a and output to the telephone set 4 connected to the subsequent stage. A pseudo noise generator 31 is connected to the other contact of the switch 30 provided between the tone A removal filter 27a and the telephone in order to avoid silence due to no voice during data reception. I try to give a natural noise to it. The tone A removal filter 27a, the switch 30 and the pseudo noise generator 31 constitute a voice restoration circuit. The receiving switch 26 and the switch 30
Is controlled by the control signal C4 of the data / voice switch 25. Further, the data reception controller 29 is also controlled by the similar control signal C4. Similar to the data transmission controller 16, this is to perform identification / error control so that data transmission can be automatically recovered when interrupted by voice intervention. Therefore, the received data can be completely restored with error-free contents.

Next, FIG. 2 shows an example of using the device of the present invention. Here, the host device 7 and the terminal device 8 are connected via the telephone line network 6. 7a inside the host device 7 is a switching device of the present invention, 7b is a host computer, 7c is a voice device, 8a inside the terminal device 8 is a switching device of the present invention, 8b is a terminal computer, and 8c is a telephone. . With such a configuration, it is possible to access the host device from the terminal device 8 and easily request the download of the game program stored in the host computer 7c. Also in this case,
During the transmission of the program, it is possible to explain the handling of the game from the audio device 7b and the operation procedure of this system, and the transmission becomes highly time efficient. It should be noted that the request for download can be freely made regardless of whether the request is made from the telephone 8c or the terminal computer 8b.

[0019]

As described above, according to the present invention, it is judged by the voice transmission judging device whether or not the talker is currently making a voice, and if there is a voice, this voice signal is outputted to the telephone line. At the same time, the data transmission is blocked, and when there is no voice, the data transmission controller is driven after a certain time delay to transmit the data, so it is possible to efficiently transmit the data during the idle time of the voice. It was Therefore, it is possible to apparently transmit voice and data at the same time by using only one telephone line, and it is possible to prevent waste of time during connection of the line. Further, since the data is transmitted between the voices, even when providing a service such as downloading a game program from the host device to the terminal device, it is possible to transmit the data while giving voice instructions on how to play and instructions. Yes, it is very efficient.

Further, since the receiving side discriminates the component of the tone signal included in the transmission signal to judge whether it is voice or data, both can be surely input to the restoration circuit. In particular, it becomes possible to avoid an error in data transmission / reception due to signal confusion.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing an example of a network using the device of the present invention.

[Explanation of symbols]

 1 Transmission Block 2 Reception Block 11 Voice Transmission Judgment Device 14/18 Mixer 18/19 Tone Generator 16 Data Transmission Controller 21 Signal Identification Means 22 Signal Extraction Means 23a / 23b Bandwidth Filter 24 Comparator 25 Data / Voice Switcher 29 Data reception controller

Claims (1)

[Claims] 1. A simultaneous data / voice transmission device comprising a transmission block and a reception block, wherein a voice signal and a data signal are input in parallel in the transmission block, and at the same time when there is a voice input, a transmission interruption signal is sent to a data transmission controller. On the other hand, when the voice input is cut off, a voice transmission judging device for transmitting a transmission permission signal of the data signal is provided after a delay of a certain time by a timer, and by controlling the voice transmission judging device, the two signals with different frequencies are transmitted. After combining the tone signals, the signals are selectively output to the telephone line, and in the reception block, the reception signals are input to the comparator through the two band filters corresponding to the respective tone signals, and the reception signals are received. After identification, it is input to the data / voice controller, while the received signal is recovered by the control signal of the data / voice switcher. Or data and audio simultaneous transmission apparatus characterized by selectively connecting to the data recovery circuit.