JP3036123B2 - Transmission device information distribution method - Google Patents

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 for a transmission device.

[0002]

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

[0003]

That is, in the conventional system, it is premised that a path is established in order to receive the information. Therefore, when the in-home device such as a subscriber is not in service, the information is provided. Cannot be received.

[0004] It is an object of the present invention to provide an information distribution system of a transmission apparatus which eliminates such a drawback and enables the provision of information by a home apparatus such as a subscriber even when the apparatus is not in service. is there.

[0005]

SUMMARY OF THE INVENTION The present invention provides a plurality of signal / voice processing circuits provided for a plurality of lines connected to an exchange, for converting analog signals input through the lines into digital signals and outputting the digital signals. And a multiplexing means for multiplexing the output signals of these signal / voice processing circuits and transmitting the multiplexed signals to a digital line. In the information distribution system for a transmission device, it is determined whether or not each line is in service. And a signal generating circuit for outputting a signal representing information to be transmitted through the digital line to the line determined by the state monitoring unit to be out of service.

[0006]

Next, an embodiment of the present invention will 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. A transmission device 2 is constructed based on 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.

[0007] 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 provided through the line 5 into a digital signal and outputting the digital signal. The multiplexing / transmission circuit section 12 receives output signals from the respective processing circuits 11 through the signal / voice path 16, assembles them into digital multiplexed signals, and sends out the digital multiplexed signals to the digital line 6.

The state monitoring circuit 10 of each channel 13 monitors whether each line 5 is in service in each signal / voice processing circuit 11, and determines that the line 5 is not in service. Outputs a predetermined transmission request signal for requesting the signal path 15 to transmit information. When the transmission request signal is input from the path 15, the signal generation circuit 9 first identifies which channel the transmission request signal is from. Then, a signal representing information from the information source 8 is generated,
The signal is output via 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 state monitoring circuit 10 of each channel 13 monitors whether each line 5 is in service in each signal / voice processing circuit 11, and transmits to the path 15 when the line 5 is not in service. Output a request signal. When receiving the transmission request signal, the signal generation circuit 9 first identifies from which channel the transmission request signal comes. Then, a signal representing 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 generation 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 section 12 assembles the digital signal together with the digital signal input from another path 16 into a digital multiplexed signal, and sends out the digital multiplexed signal to the digital line 6.

The signal sent to the digital line 6 is input to the transmission device 3 through the line 6, where it is converted into an analog signal. Analog signal obtained by the conversion is input to the subscriber such premises equipment 4 via an analog line 7. During the above, the subscriber's home device 4 is on-hook, and the signal sent from the signal generation circuit 9 is transmitted to the subscriber's home device 4 by on-hook transmission.

[0012] or a subscriber, such as in-home device 4 is turned off hook, or the subscriber call is made from the exchange 1, line 5
Becomes 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 apparatus based on the information distribution system of the present invention, the state monitoring means provided for each of the plurality of lines connected to the exchange determines whether each line is in service. The signal generation circuit determines
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, the 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 related art.

[Brief description of the drawings]

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 switch 2, 3 transmission device 4 subscriber premises device 5, 7 analog line 6 digital line 8 information source 10 state monitoring circuit 11 signal / voice processing circuit 12 multiplexing / transmission circuit unit 13 channel 14, 15 signal path 16 signal・ Audio path

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 11/00-11/10 H04Q 1/54-1/56 H04Q 3/42 H04Q 3/58-3 / 62 H04Q 3/70-3/74

Claims (1)

(57) [Claims] 1. A plurality of signal / voice processing circuits provided for each of a plurality of lines connected to an exchange, for converting an analog signal input through the line into a digital signal and outputting the digital signal, and a signal / voice processing circuit for these And a multiplexing means for multiplexing the output signal of (1) and transmitting the digital signal to a digital line. A state monitoring means for determining whether each line is in service or not. An information distribution method for a transmission apparatus, comprising: a signal generation circuit that outputs a signal representing information to be transmitted through the digital line, to the line whose monitoring means determines that the line is not in service.