JPH02206273A - Off-talk communication system - Google Patents

Abstract

PURPOSE:To receive necessary information even when a subscriber side is absent from a receiving place by providing a still image sending device and a voice sending device on an information sending side, and providing a still image receiving device and a voice receiving device at a user's set corresponding to the sending side. CONSTITUTION:A user's set HAS is provided with a voice receiving device VOL including an output device SP such as a speaker, a still image receiving device FAR consisting of the receiving part of facsimile equipment, and a subscriber side access CE2. A voice information completing signal is eliminated from the mix signal of a still image signal and the voice information completing signal by a filter FL, and only the still image signal is transmitted to the still image receiving device FAR. The still image receiving device FAR is always in a receivable state, when the still image receiving device FAR receives the still image signal, the signal is converted by a modem MOD, and stored into a storage device ME.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention utilizes the idle time of subscriber lines housed in telephone exchanges to transmit information from an information transmission center located elsewhere. The present invention relates to an off-talk communication system that transmits data and receives it on the subscriber side.

"Prior art" Off-talk communication systems include, for example, Japanese Patent Laid-Open No. 48-37
As described in Publication No. 004.

An information transmitting device for transmitting voice information to each subscriber line is installed on the exchange side, and a terminal device including a voice receiving device for receiving signals from the information transmitting device is installed on the subscriber side. During idle time, the subscriber operates the voice receiving device to output voice information from the information transmitting device to the voice receiving device.

"Problems to be Solved by the Invention" The conventional off-talk communication system as described above transmits only voice information from the information transmitting device during idle time and receives this on the subscriber side. Sometimes, when the subscriber is absent, away from the terminal, or asleep, the information is not transmitted to the subscriber, and the subscriber may not be able to receive the information. I had to concentrate my attention to some extent in order to listen.

In addition, it takes time to transmit information, and it is not possible to receive information such as maps and other figures and symbols.

An object of the present invention is to provide an off-talk communication system that solves the problems of the conventional system as described above.

"Means and effects for solving the problem" In order to achieve the above-mentioned object, the off-talk communication system according to the present invention has the following features:
a blockage detecting means connected to a subscriber line of the exchange and detecting a blockage in the subscriber line; an information sending means; In the off-talk communication system, the off-talk communication system includes a switching means for switching the information from the exchange side to the information sending means side, and a subscriber-side in-home device connected to the subscriber line and receiving information from the information sending means. The information sending means includes a still image sending device and an audio sending device for selectively sending information, and the home device includes a still image receiving device having a printer and an audio receiving device.

As described above, the present invention provides a still image sending device and an audio sending device on the information sending side, and a corresponding still image receiving device and an audio receiving device on the subscriber's home device. Therefore, the subscriber side can receive not only audio information but also still image information.

Therefore, even if the subscriber is not present at the receiving location, the subscriber can receive and receive the necessary information, and the transmission and reception are done in a short time, and the subscriber can also receive maps and other graphic information. Can be done.

The information transmitting means transmits a remote control signal, and the home device includes a control means comprising a control signal detection circuit and a control circuit for detecting the remote control signal transmitted from the information transmitting means, the control means Preferably, the output of the audio receiving device is controlled in response to the detection of the remote control signal.

That is, with this configuration, even if the subscriber forgets to turn off the output of the audio receiving device while the audio transmitting device is not transmitting information, it is possible to prevent multiple crosstalk from occurring. Even when the output of the voice receiving device is turned off on the subscriber side, urgent or necessary voice information can be transmitted to the subscriber side.

In this case, it is preferable that a filter prevents the control signal from being received by the still image receiving device.

The remote control signal from the information sending means may be of one type, but there are three types: an audio information end signal, an emergency information signal, and an emergency information release signal, and the control means controls the output of the audio receiving device as follows. It is more desirable to do so.

The - turns off the output of the audio receiving device upon detection of the audio information end signal, and turns on the output when the audio information end signal is not detected.

Second, when the audio receiving means is receiving normal information, by detecting the emergency information signal, the output of the audio receiving device is maintained at a constant volume, preferably a higher volume than the normal output, and the normal information is received. The emergency information receiving state is switched from the emergency information receiving state to the emergency information receiving state, and the output is switched from the emergency information receiving state to the normal information receiving state by the emergency information cancellation signal.

Thirdly, when the output of the audio receiving device is OFF, the output of the receiving device is turned OFF by detecting an emergency information signal.
N, the volume is maintained at a constant level, and the output of the receiving device is turned OFF upon detection of the emergency information release signal.

The in-home device includes a blockage detection means for detecting a blockage in a subscriber line, and when the blockage detection means detects a blockage in the subscriber line, the voice receiving device and the still image receiving device are connected to each other. Preferably, switching means are provided for connection to the subscriber line.

In the specific implementation of the above-described off-talk communication system according to the present invention, it is possible to transmit still image information to all subscribers at once, or to transmit static image information to some groups or regions of previous subscribers. It is preferable to selectively transmit the information to each subscriber residing in the area.

In addition, the still image receiving device is equipped with a storage device that stores the page data output to the printer, and is configured so that once the page is output, it will not be output again, and the subscriber side will not fail to receive the still image information. Thus, it is preferable to repeatedly transmit the same information several times from the still image transmitting device.

Embodiment A preferred embodiment of the off-talk communication system according to the present invention will be described below with reference to the drawings.

The off-talk communication system, as shown in Figure 1, is based on exchange E.
On the It consists of the receiving subscriber's home device RAS, and this home device HAS
is an audio receiving device VO including an output device SP such as a speaker.
L (Fig. 3), a still image receiving device FAR consisting of a receiving part of a facsimile machine, and a subscriber side access CE2.
It is equipped with

As shown in FIG. 3, the exchange side access device CEI includes a switching device W consisting of contacts Wl to W2, and a subscriber line Ll.

A blockage detection means VDI consisting of a line voltage detection circuit connected to L2, a subscriber line LL via a switching device W and an amplifier AMP, a channel selector C3 connected to L2, a channel control connected to an amplifier AMP and a channel selector C5. The channel selector C5 is composed of a circuit RTI, and the channel selector C5 is based on a plurality of pieces of information jJiML1 to MLn.

It is connected to the mix circuit x in the information sending means DTM.

The information transmitting means DTM includes a still image transmitting device FAT and an audio transmitting device BOC, and the audio transmitting device BOC includes a tape recorder and a player (not shown).

A still image transmission device FAT is equipped with a microphone, etc.

Computer PCN and image scanner I connected to it
The audio output device BOC and the personal computer PCN are each connected to the mix circuit MIX.

Access device CE2 on the subscriber side in the home device RAS
are connected to the subscriber lines L1 and L via a blockage detection means VD2 consisting of a line voltage detection circuit connected to the subscriber lines Ll and L2, a channel control circuit RT2, and a relay X, respectively.
2 and a control means CTU connected to the relay X.

Filter (notch filter in this example) PL,
It consists of a relay Y, an amplifier AMP, and a voice receiving device VOL connected to the subscriber lines L1 and L2 via a relay Z.

The control means CTU includes a control circuit CTL and a control signal detection circuit R.
Equipped with EC.

The audio receiving device VOL is composed of an output operation circuit VOL 1 that can adjust the volume and a constant output circuit VOL 2 that outputs at a constant volume that is higher than the normal volume. , operation output circuit VO
Connected to the LI side.

A still image receiving device FAR is attached to the subscriber side access device CE2 by a connector CNE, and this installation is in the following state: The still image receiving device FAR is connected to the relay X
, subscribers via Filter FL! It is designed to connect to 1t, 1, and L2.

As shown in Fig. 4, the still image receiving device FAR includes a modem MOD on the connector CNE side, a central processing unit 111PIJ connected to this modem +100, and this processing unit MPU.
The apparatus is equipped with a storage device ME, a printer PR, and an address setting switch As, which are connected to each other, and the address of the still image receiving apparatus FAR is set by operating the address setting switch AS.

The system of this embodiment works as follows.

The empty occlusion detection means VDI of the exchange base side access device GEL is as follows:
If the subscriber lines Ll, L2 are empty, the switching device W's contacts 13. When W4 is made, the subscriber lines Ll and L2 are connected to the information sending means DTII, and the occlusion detecting means VDI detects a 16Hz signal.

Contacts Wl and W2 of the switching device W are made.

On the other hand, the blockage detection means VD of the subscriber side access equipment NCE2
2 constantly detects whether the subscriber lines Ll and L2 are empty based on changes in voltage, the status of this air blockage is stored in the control circuit CTL, and the contact XI of the relay X is activated only when the subscriber lines Ll and L2 are empty. , Make up X2.

When there is no transmission information, the voice information end signal, which is one of the remote control signals, is constantly transmitted from the voice transmitter BOC, and the control signal detection circuit RFC detects this signal and contacts Yl, Y2 of relay Y. break.

This is sending information from the audio sending device BOC,
The same applies if the transmission of the information is interrupted or terminated.

Audio transmission device @ When transmitting information from BOC.

The audio information end signal is interrupted, the control signal detection circuit REC detects this audio information end signal interruption, and relay Y is activated.
contacts Yl and Y2 are made, and the audio information is output to the output device sP via the output operation circuit VOL 1.

The subscriber can select a channel by operating the channel WJ1ml device RT2, and when the subscriber performs the selection operation of the desired channel, the channel control circuit RTI of the exchange side access device tCEI changes the channel according to the selection. Set selector cs to the channel selected by the subscriber.

Audio transmission device! When normal information (non-emergency information) is being sent from the BOC using a tape recorder, etc., when emergency information is sent from the audio transmission device @aOC on a certain channel, the remote control signal is sent from the audio transmission device BOC. - An emergency information signal is sent to this remote destination f.
At the same time as the control signal detection circuit REC detects the R@ signal,
The control circuit CTL is connected to the amplifier A) IP of the access device CE2.
, connect relay 2 to the contact zz side, and connect the receiving means VO.
L is switched to the constant output circuit VOLz side, and the emergency information is output to the audio output device SP at a constant volume.

When the emergency information end signal, which is the control signal -, is transmitted and the control signal detection circuit REC detects this control signal, the control i circuit CTI makes contact Z1 of relay 2 and switches it to the output operation circuit VOLI side. .

Also, when the voice information end signal is being transmitted from the voice transmitting device BOC, that is, when the relay Y is in the break state and not being output to the output device SP, when emergency information is being transmitted from the voice transmitting device BoC. In this case, the control signal detection circuit RFC detects the emergency information signal transmitted from the voice transmission device BOC, and closes the contacts Yl and Y2 of the relay Y, and also makes the control circuit CTL or the contact z2 of the relay Z due to the detection. , the emergency information is output to the output device MSP at a constant volume via the constant output circuit VOL2.

When the emergency information ends, the control signal detection circuit REC detects the emergency information release signal from the voice sending device BOC, and makes the relay Z to the contact Zl side by a command from the control circuit CTL.

Thereafter, when the voice information end signal is transmitted from the voice sending device BOC, the control signal detection circuit REC detects this signal and breaks the contacts Yl and Y2 of the relay Y.

In all cases, use telephone equipment.

Alternatively, when there is a reception signal in the telephone device, the blockage detection means VDI, VO2 detect the blockage of the subscriber lines L1, L2, and the contacts W1. W2 side is made and relay X is broken.

The still image information is sent by the still image sending device Fψ when the audio sending device BOc is not sending out audio information.

When transmitting still image information, the image scanner Is inputs the still image information to the personal computer PCH and transmits it. At this time, the audio transmitter BOC sends an audio information end signal, which is one of the remote control signals. Since the still image signal (± mix circuit MIX mixes the still image signal with the audio information end signal and sends it to the subscriber side) is always transmitted.

In this embodiment, the audio information end signal is transmitted to the frequency band of the telephone line (3001 (Z~3°5k) as shown in Figure 2).
H2) middle 600Hz is selected, still image signal D is 600Hz
A frequency band of <300 Hz to 1-5 kHz excluding Hz is selected, and a frequency higher than 600 Hz is selected for the control V4 signal other than the audio information end signal.

Therefore, from the mixed signal of the still image signal and the audio information end signal transmitted to the subscriber side access device CE2, the audio information end signal is removed by the filter PL shown in FIG. Transmitted to FAR.

In the system of this embodiment, the still image signal is generated for each page as shown in FIG. 5: address signals R1 to R3, page start signals (page data) R4, R5, print data signals Rdl to Rdn, and page data end signal. R6,
The format is set in the order of R7.

The address signals R1, RZ, and R3 are a kind of activation signal, and are activated by the still image sending device FA by the DTMF signal coat.
T, and R1 contains a code (for example, DT
MF signal code "A" selects by group, rBJ selects by region), and R2 and R3 are specific address selection codes.

For example, select rAJ code for R1, R2, R3
If you select a specific group of coats, only the static image receiver @FAR with the address of that specific coat will operate, and if all rAJ coats are selected for R1 to R3,
The static image receiving device FAR of all subscribers receives it and sends rB to R1.
If court J is selected and courts in a specific region are selected in R2 and R3, only the still image receiving device FAR whose address is the specific court will be activated.

The still image receiving device FAR is always in a receivable state, and when the still image receiving device FAR receives a still image signal, it is converted by the modem MOD, and the central processing unit MPU sends the address signal R1-83 to the address setting switch AS. It is determined whether or not the address matches the address set in , and if they match, the code of the page start signals R4 and R5 is read, and it is checked whether the page data of the code is stored in the storage device ME. 1), the still image information of the page is output to the printer PR, and the page end signal R6 is output.
, R7, the corresponding page data (page start signal R4
, R5) are stored in the storage device ME.

The central processing unit MM-Kari continues until all pages have been received.
Repeat the above steps for each page.

In this embodiment, if the printer output of still image information on the page being received is not completely completed and the reception is interrupted, the storage device ME does not store the page data, so still image information with the same content is repeatedly transmitted. This is designed to prevent reception failures.

The process of storing page data in the storage device ME is such that the total storage capacity is divided into 50 pages, as shown in FIG.
Recieved! Page data is always stored sequentially in the storage device ME up to 25 pages, and when the stored page data exceeds 25 pages, the stored page data is deleted from the storage device IME in the order of oldest pages. , the relevant part is set to a reset state.

Therefore, when page data b of 5 new pages is output to the printer PR with page data a already stored in storage capacity Nos. 31 to 5 as shown in FIG. It is stored in the 6th to 10th C of the memory capacity, and accordingly the 31st to 35th C of the memory capacity is stored.
will be reset.

As described above, not only audio information but also still image information is transmitted to the subscriber side, and the subscriber can reliably receive information even if the subscriber is not at the location where the in-house MCE 2 is installed. , the time for transmitting information to the subscriber side can also be shortened.

"Effects of the Invention" According to the off-talk communication system according to the present invention, even if the subscriber is absent from the receiving place, the subscriber can receive and receive necessary information, and the transmission and reception process can be shortened. can also receive maps and other graphical information.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of an off-talk communication system according to the present invention, and FIG. 2 (± shows an example of a frequency band combination of an audio information end signal and a still image signal, which are remote control signals). 3 is a detailed configuration diagram of FIG. 1, FIG. 4 is a configuration diagram of the still image receiving device in the embodiment, and FIG. 5 is an explanatory diagram showing an example of the transmission format of still image information. , FIG. 6 is an explanatory diagram showing the procedure for storing and resetting the storage device in the still image receiving device. In the figure, the main symbols EX is the exchange, DTM is the information sending means, FAT is the still image sending device, and IS is the image Scanner, PCN is a computer, BOC is an audio output device, MIX is a mixing circuit,
CEI is the exchange side access device, W is the switching device, VD
I is air blockage detection means, RTI is channel control circuit, C
8 is a channel selector, CH2 is a terminal device, VO2 is an air blockage detection means, RT2 is a channel control device,
is the control means, CTL is its control circuit, REC is its control signal detection circuit, X, Y, Z are relays, vOL is the audio receiving device, SP is its output device, FL is the filter, FAR
is a still image receiving device, MOD is a modem, As is an address setting switch, ■ is a storage device, MPU is a central processing unit,
PR is a printer.

Claims (4)

[Claims] (1) a blockage detection means connected to a subscriber line of an exchange and detecting a blockage of the subscriber line; an information sending means; and when the blockage detection means detects a blockage of the subscriber line; Off-talk communication comprising: switching means for switching the subscriber line from the exchange side to the information sending means side; and a subscriber-side in-home device connected to the subscriber line and receiving information from the information sending means. In the system, the information transmitting means includes a still image transmitting device and an audio transmitting device that selectively transmit information to be transmitted, and the home device includes a still image receiving device having a printer and an audio receiving device. An off-talk communication system characterized by: (2), the information transmitting means is caused to transmit a remote control signal, and the home device includes a control means comprising a control signal detection circuit and a control circuit for detecting the remote control signal transmitted from the information transmitting means; Claim: 1. The control means controls the output of the audio receiving device in response to the detection of the remote control signal, and prevents the remote control signal from being received by the still image receiving device using a filter. 1. The off-talk communication system according to 1. (3) The in-home device includes a blockage detection means for detecting a blockage of the subscriber line, and when the blockage detection means detects a blockage of the subscriber line, the voice receiving device and the still image 3. The off-talk communication system according to claim 1, further comprising switching means for connecting the receiving device to the subscriber line. (4) The transmission format transmitted from the still image sending device to the still image receiving device is composed of several types of address signals, page start signals, print data signals, and page end signals that can be selectively set. , the still image receiving device includes a central processing unit attached to a storage device, and the central processing unit controls the storage device in response to a page end signal so that the storage device stores the output page to the printer; 4. The off-talk communication system according to claim 2, wherein the output of the printer is controlled by identifying an address signal and identifying print data and a storage page of a storage device by receiving a page start signal.