JP2861489B2 - Audio signal exchange system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal exchange system including a cable broadcasting telephone system and an off-talk communication system, and more particularly to a center of an audio signal exchange system having a switch device for connecting an information sound source and an output line. Related to the device.

[0002]

2. Description of the Related Art An audio signal switching system is known as an off-talk communication system. This off-talk communication system is particularly widespread in villages such as agricultural and fishing villages, and shares a subscriber line (telephone line) in each home for telephone calls and information communication. That is, when the telephone is used off-hook, the subscriber line is connected to the exchange of the exchange, and telephone communication can be performed both inside and outside the area. On the other hand, when the phone is not in use,
That is, when the telephone is on-hook, the subscriber line is automatically connected to a broadcasting center device normally managed by the village, and information transmitted from the center device is transmitted to each home. You.

A schematic configuration of the off-talk communication system will be described with reference to FIG. In FIG. 3, 1 is a center device, 2 is a local exchange, 3 is a home device of each home,
Reference numeral 4 denotes a telephone connected to an outside line.

The center device 1 includes an information sound source including a plurality of magnetic reproducing devices 11a, 11b,..., A microphone 12, a plurality of (for example, twenty) output lines 14, Switch device 13 for connecting to line 14
And a CPU 15 for controlling the operation of the switch device 13. In addition, the exchange 2 has an exchange 2
1 and switching devices 24a and 24b connected to the subscriber lines 23a and 23b and the like. The output line 14 is connected to a terminal 25 of the exchange 2.

[0005] The home device 3 of each home includes a home telephone 3
1. The home speaker 32 is connected. As shown in FIG. 4, the switching device 24a is connected to one of a line 26 connected to the exchange 21 and an arbitrary four line 25a of the plurality of output lines 14. Is selected from the switching means. The control of the switching means is performed by the telephone 31 in each home.
It can be performed by a known operation.

The switch device 1 of the center device 1 will now be described.
4 is controlled by the CPU 15 so as to connect the information sound source to each of the output lines 14 by a predetermined program at intervals of time, for example, as shown in FIG.
As shown in FIG. 4, for example, this program includes a microphone 12 on the output line 1 between 7 and 8 o'clock in the morning,
BGM is connected to the output line 2, the tape 1 is connected to the output line 3, the information sound source for notification is connected to all output lines during 8 to 8.30 hours, and 8.30 to 10:00 and 10 to 11. 30
During the time, each is configured to connect to the illustrated information sound source.

In each home, any four output lines can be selected from the twenty output lines from the center device 1. Any four selected in this way are shown in FIG.
25a.

The general operation of the off-talk communication system having the above configuration is as follows. Users at each home
Arbitrary four lines are selected in advance from the twenty output lines from the center device 1. During normal use, when the user off-hook the telephone 31, the switching device 24a
Automatically connects the subscriber line 23a to the exchange 21. Thus, the user can make a call as usual.

When the telephone is finished and the telephone 31 is put on-hook, the switching device 24a automatically selects one of the output lines 25a specified in advance by the user. As a result, the center device 1 is connected via this output line.
Is sent from the speaker 32 via the home device 3.
To be transmitted to the home from the speaker 32.

[0010]

The conventional configuration of the switch device 13 of the center device 1 is as shown in FIG. In the figure, 51 is an l × n information selection lattice switch (ISW) composed of l × n lattice switches formed on an insulating board, and 52 is a similarly formed p × n transmission lattice switch (OSW). , 53 are similarly formed q × n information selection lattice switches, 54 is a similarly formed r × n transmission lattice switch, 55 is the l × n,
q × n information selection lattice switches 51 and 53
Channels, 56, which connect to the n, r × n delivery grid switches 52, 54 are detailed views of the elements of the grid switch.
Reference numeral 56 denotes one of the many elements as a representative.

Each of the information sound sources is connected to l and q terminals of the l × n and q × n information selection lattice switches 51 and 53, and a signal output from the information sound source is turned on. Via the switched grid switch elements of the channel 55 and the p × n, r × n outgoing grid switches 52, 54 to their p and r output lines. Will be.

Since the conventional switch device 13 has the above-described configuration, if the number of information sound sources or the number of output lines that can be connected to the switch device 13 is increased, the l × n, q × n information selection lattice switch 5
A configuration in which an information selection grid switch having a scale such as 1 and 53 and a transmission grid switch having a scale such as the p × n and r × n transmission grid switches 52 and 54 are added and connected by newly provided channels. Therefore, there is a problem that the configuration and scale of the switch device 13 are increased and the switch device 13 is expensive.

An object of the present invention is to eliminate the above-mentioned problems of the prior art and to provide a switch device capable of connecting a large number of information sound sources or taking out a large number of output lines with a small-scale configuration. It is an object of the present invention to provide a center device of an audio signal exchange system provided with the center device.

[0014]

In order to achieve the above object, according to the first aspect of the present invention, when a home telephone is off-hook, a subscriber line is connected to an exchange side of a local exchange in the system to establish a connection with an outside line. An internal exchange having a switching means configured to form a call loop and automatically switch and connect the subscriber line to the center device when the telephone is on-hook; and an information source when the home telephone is on-hook. And a center device having switch means configured to selectively connect and transmit audio signal information via the switching means and the in-home speaker, wherein the center device comprises a plurality of A connected to each of the information sound sources (where a is a positive integer)
A signal line group, and an n1 (where n1 is an integer of 2 or more) channel signal line connected to the signal line group via a first plurality of lattice switches;
Selection information transmission including b (where n2 is an integer of 2 or more) channel signal lines and b (where b is a positive integer) output line group connected via a second plurality of lattice switches And a switching means located between the information selecting section and the selected information transmitting section, and each of the n1 channel signal lines and the n2 channel signal lines is connected to a third plurality of grids. N1 × n connected via a switch
A two-grating circuit, and a control unit that controls on / off control of each of the first, third and third plurality of grid switches according to a program, and sets the n1 channels of the information selection unit to m1 (where m1 is an integer of 2 or more)
One information selection unit is configured so that an information sound source can be connected to each of a signal lines of the m1 information selection units, and n2 channels of the selection information transmission unit are set to m.
2 (where m2 is an integer of 2 or more) to form m2 selection information transmitting units, and each of the m2 selection information transmitting units b
The feature is that selection information is output from the signal lines.

[0015]

According to the first aspect of the present invention, it is possible to connect m1 times as many information sound sources as the conventional device to the information selection lattice switch,
In addition, the output line of the transmission grating switch can be increased by m2 times.
As a result, by laying a small-scale switch device in the information center, the user can obtain m1 × m
You will be able to hear information that is twice as varied.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a configuration diagram of a first embodiment of the present invention.
In the figure, 61,..., 6m are l × n (l columns, n
Row) l obtained by dividing n rows of the information selection lattice switch 51 into m
A column, n / m row information selection lattice switch (hereinafter l × n /
m information selection lattice switch). Also, 71,
.., 7r are transmission grid switches of p columns and n / r rows (hereinafter referred to as p × n / r transmission grid switches) obtained by dividing the n rows of the p × n (p column, n rows) transmission grid switch 52 of FIG. ).

Reference numeral 81 denotes an inter-channel lattice switch (hereinafter referred to as n × n) of n columns and n rows for switching and connecting n channels to each other.
63 is the above-mentioned l.
× n / m information selection lattice switches 61,..., 6m and n × n
N channels connecting the inter-channel lattice switch 81 and 73 are the n × n inter-channel lattice switches 81 and p
.Times.n / r transmission grating switches 71,..., 7r. 82 is a detailed view of the elements of the lattice switch.

The 1 × n / m information selection grid switch 6
Each information sound source can be connected to the terminals of l columns of 1,..., 6 m. That is, 1 × m information sound sources can be connected. On the other hand, information can be output from each of the terminals of the p columns of the p × n / r transmission grid switches 71,..., 7m. These p × r output lines are connected to the exchange 2. Then, the user can arbitrarily select a predetermined number from the p × r output lines.

Next, the operation of this embodiment will be described. The l
, 6m, an individual information sound source is connected to the terminal of each l column, and the elements 82 of the lattice switches 61,..., 6m, 81 and 71,. On / off is controlled by the CPU 15 according to a program predetermined for each time zone. Then, p × n / r transmission lattice switches 71,.
On each of the × r output lines, an information output can be obtained by arbitrarily combining the l × m information sound sources according to the time zone.

This information output is transmitted to the exchange 2 and transmitted from a speaker at home of the user. Accordingly, the user can receive information provided by arbitrarily combining l × m information sound sources from p × r output lines, and can provide m more information than the conventional apparatus of the same size. The user can hear information rich in xr times.

As is apparent from the above description, according to this embodiment, the l × n / m information selection grid switch 6 of the same scale as the conventional l × n information selection grid switch 51 (see FIG. 6).
1,..., 6 m, the conventional p × n transmission grid switch 52
P × n / r transmission grid switch 7 of the same size as (see FIG. 6)
By using 1,..., 7r and the n × n inter-channel lattice switch 81, a broadcast which is more varied by a factor of m × r than the conventional device is provided to the user of the audio signal switching system. Will be able to

In the above embodiment, the n.times.n inter-channel lattice switch 81 is used. However, the present invention is not limited to this, and the n.times.n 'inter-channel lattice switch, that is, a switch having different numbers of columns and rows of channels. Of course, it may be used.

[0023]

As is apparent from the above description, according to the present invention, a broadcast having more m × r times than conventional broadcasts can be provided to the user of the audio signal switching system with a small-scale configuration. Service can be greatly improved by using a small-scale and inexpensive switch device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of an off-talk communication system.

FIG. 3 is a configuration diagram illustrating a specific example of the switching device of FIG. 3;

FIG. 4 is a diagram illustrating an example of a combination of information transmitted to an output line of a center device.

FIG. 5 is a configuration diagram of a switch device of a conventional center device.

[Explanation of symbols]

51 ... lxn information selection lattice switch, 52 ... pxn transmission lattice switch, 61-6m ... lxn / m information selection lattice switch, 63, 73 ... channel, 71-7m ... pxn /
r transmission lattice switch, 81 ... n × n inter-channel lattice switch.

Claims (2)

(57) [Claims] (1) When the home telephone is hooked off-hook,
Connect the incoming line to the exchange side of the local exchange
Creates a call loop with the line and goes forward when on-hook
Automatically switch the subscriber line to the center equipment
An intra-system exchange having switching means configured in
Select the information source when the home phone is on-hook
Connect the audio signal information to the switching means and home speaker
Having switch means configured to transmit via
Signal exchange system with a center device
A is, the center device, is connected to each of a plurality of the information source
A (where a is a positive integer) signal line group
Line group and a first plurality of grid switches
n1 (where n1 is an integer of 2 or more) channel signals
And an information selection unit composed of n lines (where n2 is
(2 or more integer) channel signal lines and a second plurality of gratings
B lines connected through a switch (where b is a positive integer)
) And a selection information sending unit consisting of
Switch means , located between the information selection unit and the selection information sending unit,
n1 channel signal lines and n2 channel signal lines
To each other via a third plurality of grid switches
N1 × n2 lattice circuit, and each of the first, second and third multiple lattice switches
Control section that controls the on / off control of the motor according to a program
And n1 channels of the information selection unit are set to m1 (where m1
(1 is an integer of 2 or more)) to form m1 information selectors
An information sound source is connected to each of the a signal lines of the m1 information selection units.
Can be connected, and the selection information can be transmitted.
M2 (where m2 is 2 or more)
(Integer number) to form m2 selection information transmitting units,
Selection information from each of the b signal lines of the m2 selection information transmission units
Characterized by outputting audio.
Signal exchange system. 2. The audio signal exchange system according to claim 1, wherein n1 = n2 .