JPH02233053A - Off-talk communication system - Google Patents

Abstract

PURPOSE:To record a broadcast signal such as emergency broadcast automatically at an optional point of time by providing a sound recording control signal transmission section to the station side and providing a sound recording device and a recording control section to a subscriber's equipment. CONSTITUTION:A sound recording control signal transmission section 202 at the station side sends a recording start signal prior to the transmission of a broadcast signal at off-talk and sends a recording stop signal after the end of the broadcast signal to a subscriber's equipment via a communication line respectively. When a recording control section 137 at the subscriber's equipment sets a recorder 138 in the recording enable state upon the reception of the recording start signal from the station side, records the broadcast signal sent after the start signal and terminates the recording state upon the reception of the recording stop signal. Thus, the subscriber's equipment records the broadcast signal automatically and records emergency broadcast or the like at an optional point of time.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a system in which a broadcasting center is provided on the station side, broadcast receiving equipment is provided on the subscriber's home side, and communication is established between the station side and the subscriber's home side. The present invention relates to an off-talk communication system in which a broadcast signal is sent from a broadcasting center on the station side to broadcast receiving equipment at a subscriber's home via a communication line during an off-talk period when no talk is being performed.

[Conventional technology]

Regarding the off-talk communication method, for example,
This system is well known in the art, as described in Publication No. 1846, "Broadcasting Control System Using Telephone Lines," and Japanese Patent Application Laid-open Publication No. 178029/1980, "Cable Broadcasting Service System," but an outline thereof will be explained below.

FIG. 2 is a block diagram showing an example of a conventional off-talk communication system of this type. As seen in the figure, the off-talk communication method uses an in-office device 1 installed on the exchange 100 side.
10 and an in-home device 130 installed on the subscriber telephone 120 side, which is a terminal, and the in-office device 110 and the in-home device 130 are connected by a communication line vA140.

The in-office device 110 is also provided with an incoming call detection circuit 111, a line detection circuit 112, and a changeover switch S1 for switching communication lines. A telephone broadcasting center device 200 is provided.

On the other hand, the home device 130 is provided with an operation section 131, an off-footer detection circuit 132, an incoming call detection circuit 133, a changeover switch S2 for switching communication lines, and a control section 136, and further includes an amplifier 134 and a switch via the amplifier 134. A speaker 300 is provided that is connected to switch S2.

When performing a telephone broadcast using off-talk communication, the control unit 136 operates the operation unit 131 to guide the switch S2 to the broken line position, and at the same time forms a high resistance loop and sends a PB signal to the communication line 140. . The line detection circuit 112 of the in-house device 110 detects this signal from the in-home device 130, and guides the changeover switch S1 to the position shown by the broken line by the action of a control section (not shown).

As a result, the information signal (
The broadcast signal) is sent to the home device 130 via the channel switching circuit 113, the changeover switch Sl, and the communication line 140, and in the home device 130, it is output from the speaker 300 through the changeover switch S2 and the amplifier 134. To change the channel of a telephone broadcast, a predetermined signal is sent to the communication line 140 from a signal sending means (not shown) by the operation of the control unit 136 by operating the operation unit 131, and this is detected by the line detection circuit 112. As a result, switching is performed in the channel switching circuit 113.

To end the off-talk communication, the control unit 136 operates the operation unit 131 of the home device 130 to guide the changeover switch S2 to the solid line position, and the line detection circuit 112 detects this, as shown in the figure. The changeover switch S1 is also guided to the solid line position by the action of the drain control section.

While using telephone broadcasting by off-talk communication, the telephone 12
When an incoming call is received at 0, the incoming call detection circuit 111 detects an incoming call signal from the exchange 100, and a control section (not shown) switches the selector switch S1 from the broken line position to the solid line position to send the call from the communication line 140 to the broadcasting center. Disconnect device 200. As a result, the incoming call signal from the exchange 100 is detected by the incoming call detection circuit 133 of the home device 130, and the controller 136 thereby switches the changeover switch S2 from the broken line position to the solid line position, and the telephone 120 is transferred to the communication line 140. It is connected to the exchange 100 through. Therefore, by taking the telephone 120 off-hook, it is possible to make a telephone call.

Furthermore, if the telephone 120 is off-hook while using telephone broadcasting through off-talk communication, a DC loop is formed, so the off-footer detection circuit 132 detects this, and the controller 136 operates to move the selector switch S2 from the broken line position. The telephone 120 is guided to the solid line position and the telephone 120 is connected to the communication line 140. Further, this state is detected by the line detection circuit 112, and the changeover switch S1 is switched from the broken line position to the solid line position by the action of the control section shown in the figure, and the telephone 120 is connected to the exchange 100 through the communication line 140. This allows normal outgoing calls from telephone 120.

[Problem to be solved by the invention]

In the conventional off-talk communication system as explained above, the broadcast signal (.information) sent from the telephone broadcasting center equipment is listened to using a speaker installed in the home equipment, and when recording the contents of the broadcast, , a separate recording device is connected to the speaker 3 on the output side of the amplifier 134 of the home device 130.
It was connected to the 00, and the recording operation was performed manually by timing the broadcast content to be recorded. However, since such conventional recording methods are performed manually, it is not possible to completely record the desired broadcast due to the timing, or the user of the home device 130 must be called in advance and the user must be involved. There was a problem that recording was not possible.

An object of the present invention is to automatically bring the recording device into the recording state and record the broadcast by adding a control signal from the center device and broadcasting even if the recording device is not set in advance to the recording enabled state. To provide an off-talk communication system in which broadcast signals such as emergency calls and broadcasts sent from a center device at any time can be automatically recorded by a recording device.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a broadcasting center on the station side and broadcast reception equipment on the subscriber's house side, and during an off-talk period when communication is not taking place between the station side and the subscriber's house side.
In an off-talk communication system in which broadcast signals are sent from a broadcasting center on the station side to broadcast receiving equipment on the subscriber's home side via a communication line, a recording control signal sending section is provided on the station side, and a recording device is installed on the subscriber's home side. and a recording control section.

[Effect]

The recording control signal transmitter on the station side transmits a recording start signal prior to transmitting the broadcast signal during off-talk, and a recording stop signal after the broadcast signal ends, to the subscriber's home via the communication line. When the recording control unit on the subscriber's home side receives a recording start signal from the station side via the communication line, it sets the recording device to a recordable state and records the broadcast signal sent out thereafter. and ends the recording state when a recording stop signal is received.

In this way, broadcast signals can be automatically recorded at the subscriber's home without requiring manual operation.

〔Example〕

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

In this figure, the same or corresponding parts as in FIG. 2 are given the same reference numerals. In addition, 201 is a center control circuit, 202 is a recording control signal sending circuit, 203 is a broadcasting device, 135 is a recording control signal detection circuit, 137 is a recording control section, and 138 is a recording section (recording device).

In FIG. 1, a recording unit 13 built in an in-home device 130 records broadcast contents such as emergency communications from a center device 200.
This will be explained by taking as an example a case where recording is performed on 8. Prior to broadcasting, from the recording control signal sending circuit 202 of the center device 200,
A specially prepared control signal (recording start signal) is sent from the center control circuit 201 to each dedicated communication line 210, and is sent to each channel selected and connected between the in-home devices by the channel switching circuit 113 of the in-office device 1100.

Next, a recording start signal as a recording control signal is sent to the communication line 140 only when the changeover switch S1 is switched to the center device side, that is, to the position shown by the broken line, that is, when off-talk communication is possible.

As a result, the recording start signal is detected by the recording control signal detection circuit 135 on the home device 130 side, and the detection result is sent to the home control section 136. Based on this signal, the control section 136 sets the recording section 138 to a recordable state via the recording control circuit 137.

Next, the microphone of the center device 200 or the telephone broadcasting device 2
An emergency broadcast etc. is performed from 03, and the broadcast content is automatically recorded in the recording unit 138 of the home device 130 via the same route as the recording start signal.

To end the recording, the recording control signal sending circuit 202 of the center device 200 sends out a recording stop signal as a specially prepared control signal, in the same way as when starting the recording. Recorded section 1
38 is automatically released.

In addition, this system operates when the changeover switch S1 of the in-office device 110 is switched to the center side, that is, the position shown by the broken line, and the changeover switch S2 of the home device 130 is switched to the speaker side, that is, the position shown by the broken line, that is, the telephone is in use. Not, but
It is assumed that off-talk communication is possible.

Note that the recording control signal specially prepared in this example is as follows:
For example, by using a signal that complies with the rules for terminal equipment, such as a combination of PB dial signals, the off-talk communication service can operate without violating the technical conditions, and even if other home equipment such as a telephone is connected. It has no effect on the

With the configuration as described above, by adding a specific recording control signal from the center device and broadcasting it, the broadcast content can be recorded without requiring any human intervention on the home device side.

Although this embodiment shows a case in which the recording unit is built into a home device, a configuration in which a recording device such as a tape recorder having a function of enabling recording by remote control is connected to the outside is also possible. Of course, it is also possible to do so. In that case, there is no change in circuit operation. Further, in this embodiment, recording is started by a recording control signal, but it is also possible to adopt a system in which a recording standby state is entered by a first control signal, and recording is started by a second signal different from the first control signal.

[Effects of the Invention] As explained above, according to the present invention, a recording device attached to an in-home device is controlled to perform a recording operation using a specially prepared recording control signal sent from a center device prior to broadcasting. By making it possible to record broadcasts that are subsequently sent, emergency broadcasts, etc. can be made and recorded at any time, and there is no need for any manual operation on the home equipment side. Because it can be recorded,
Even if the user is away from home, the broadcast content can be reliably communicated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional off-talk communication system. Explanation of symbols 100...exchange, 110...in-office equipment, 120...
. . . Telephone, 130 . ...Channel switching circuit, 131...
・Operation unit, 132...Off footer detection circuit, 133・
...Incoming call detection circuit, 134...Amplifier, 135...
Recording control signal detection circuit, 136...control unit, 137.
...Recording control circuit, 13th...Recording section (recording device L)
201... Center control circuit, 202... Recording control signal sending circuit, 203... Microphone or broadcasting device. Agent: Patent attorney Namiki. Akio's agent Patent attorney Kiyoshi Matsuzaki

Claims (1)

[Claims] 1) The station side is equipped with a broadcasting center, the subscriber house side is equipped with broadcast receiving equipment, and during the off-talk period when communication is not taking place between the station side and the subscriber house side, In the off-talk communication system in which broadcast signals are sent from a broadcast center to broadcast receiving equipment at subscriber's homes via communication lines, the station side is given a recording start signal and an end signal to the station prior to transmitting the broadcast signal during off-talk. Later, a recording control signal sending section is provided which sends a recording stop signal to the subscriber's home side via the communication line, and a recording device for recording the received broadcast signal and a recording device that records the received broadcast signal are installed at the subscriber's home side. When a recording start signal is received from the station side, the recording device is set to a recordable state and the broadcast signal transmitted thereafter is recorded, and when a recording stop signal is received, the recording state is ended. An off-talk communication method characterized by comprising: a recording control unit that performs an off-talk communication.