JPH0522471A - Information distribution system for transmitter - Google Patents

Abstract

PURPOSE:To allow a subscriber's equipment to receive information offer through on-hook transmission. CONSTITUTION:Each signal voice processing circuit 11 in a state monitor circuit 10 of each channel 13 monitors whether or not each line 5 is in-service state and when the line 5 is not in the inservice state, a transmission request signal is outputted to a path 15. Upon the receipt of a transmission request signal, a signal generating circuit 9 identifies at first from which channel it comes. Then a signal representing information from an information source 8 is generated and outputted to a line 5 of a channel from which a transmission request signal is outputted through a path 14. The signal voice processing circuit 11 receives the signal from the signal generating circuit 9 through the path 14 and the line 5 and the signal is converted into a digital signal and outputted to a path 16. A multiplexer transmission circuit section 12 composes the digital signal into a digital multiplex signal together with a digital signal inputted through the other path 16 and sends the result to a digital line 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information distribution system of a transmission device.

[0002]

2. Description of the Related Art In a communication system composed of a transmission device based on a conventional information distribution system, when an in-home device such as a subscriber wants to receive information from the center, first, the information providing source is sent to the center. Need to open a pass.

[0003]

That is, in the conventional method, the opening of a path is premised to receive the information, and therefore the information is provided when the home device of the subscriber is not in service. I can't receive it.

An object of the present invention is to eliminate the above drawbacks and provide an information distribution system of a transmission device which enables a home device such as a subscriber to receive information even when not in service. is there.

[0005]

The present invention provides a plurality of signal / voice processing circuits provided for each of a plurality of lines connected to an exchange and converting an analog signal input through the line into a digital signal and outputting the digital signal. And a multiplexing means for multiplexing the output signals of these signal / voice processing circuits and sending them to a digital line, in an information distribution system for a transmission device, it is determined whether or not each of the lines is in service. And a signal generation circuit for outputting a signal representing information to be transmitted through the digital line, to the line determined by the state monitor to be in the in-service state.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a communication system constituted by an example of a transmission device based on the information distribution system of the present invention. Reference numeral 2 is a transmission device constructed according to the method of the present invention, and is connected between the exchange 1 and the digital line 6. Another transmission device 3 is connected to the other end of the digital line 6, and a plurality of home devices 4 such as subscribers are connected to the transmission device 3 through an analog line 7.

The transmission device 3 and the exchange 1 are connected by a plurality of analog lines 5, and the transmission device 3 is connected to each line 5.
Each channel 13 is provided with a signal / voice processing circuit 11 for converting an analog signal given through the line 5 into a digital signal and outputting the digital signal. The multiplexing / transmission circuit unit 12 receives the output signals from each processing circuit 11 through the signal / voice path 16, assembles them into a digital multiplex signal, and sends it to the digital line 6.

The status monitor circuit 10 of each channel 13 monitors whether each line 5 is in service in each signal / voice processing circuit 11, and when it is determined that the line 5 is not in service. Output a predetermined transmission request signal for requesting information transmission to the signal path 15. When the transmission request signal is input from the path 15, the signal generation circuit 9 first identifies which channel it is from. Then, a signal representing the information from the information source 8 is generated,
The signal is output through the signal path 14 to the line 5 of the channel that has output the transmission request signal.

Next, the operation will be described. The status monitoring circuit 10 of each channel 13 monitors whether or not each line 5 is in service in each signal / voice processing circuit 11, and when the line 5 is not in service, transmits to the path 15. Output the request signal. When the signal generation circuit 9 receives this transmission request signal, it first identifies which channel it is from. Then, a signal representing the information from the information source 8 is generated, and the signal is output to the line 5 of the channel that has output the transmission request signal through the path 14.

The signal / voice processing circuit 11 receives the signal from the signal generating circuit 9 through the path 14 and the line 5, converts the signal into a digital signal, and outputs the digital signal to the path 16. The multiplexing / transmission circuit unit 12 assembles the digital signal together with the digital signal input from the other path 16 into a digital multiplex signal and sends it to the digital line 6.

The signal sent to the digital line 6 is input to the transmission device 3 through the line 6 and converted into an analog signal there. The analog signal of the conversion 5 is input to the home device 4 of the subscriber or the like through the analog line 7. During the above, the subscriber's home device 4 is in the on-hook state, and the signal sent from the signal generating circuit 9 is transmitted to the subscriber's home device 4 by the on-hook transmission.

The home device 4 of the subscriber or the like goes on-hook, or the subscriber 1 is called from the exchange 1, and the line 5
Is in service, the state monitoring circuit 10 stops outputting the transmission request signal, and as a result, the signal generation circuit 9
Stops outputting the signal.

[0013]

As described above, in the transmission device based on the information distribution system of the present invention, the status monitoring means provided for each of a plurality of lines connected to the exchange confirms whether each line is in service. The signal generation circuit determines whether or not
A signal representing information to be transmitted through the digital line is output to the line that the state monitoring means has determined not to be in service. Therefore, information can be transmitted from the transmission device to the subscriber's home device by on-hook transmission without establishing a path from the subscriber's home device to the information source as in the conventional case.

[Brief description of drawings]

FIG. 1 is a block diagram showing a communication system configured by an example of a transmission device based on an information distribution system of the present invention.

[Explanation of symbols]

1 exchange A few transmission devices 4 In-house devices such as subscribers 5,7 analog line 6 digital lines 8 information sources 10 Status monitoring circuit 11 Signal / voice processing circuit 12 Multiplexing / transmission circuit 13 channels 14,15 signal path 16 signal / voice paths

Claims (2)

[Claims] 1. A plurality of signal / voice processing circuits which are provided for each of a plurality of lines connected to an exchange, and which convert an analog signal input through the line into a digital signal and output the digital signal, and these signal / voice processing circuits. In the information distribution system for a transmission device, which comprises a multiplexing means for multiplexing the output signals of the above and transmitting them to a digital circuit, a status monitoring means for judging whether or not each of the circuits is in service, An information distribution system for a transmission device, characterized in that a signal generation circuit for outputting a signal representing information to be transmitted through the digital line is provided to the line determined by the monitoring means not to be in service. 2. An information distribution system for a transmission device according to claim 1, wherein said status monitoring means determines whether or not said line is in service based on a signal in said signal / voice processing circuit. .