JPH0646131Y2 - Switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a switching device used for switching between video and audio signals of a television signal transmission device.

[Conventional technology]

Conventionally, this type of switching device includes a first switching device A and a second switching device B as shown in FIG. 2, and the first switching device A includes a plurality of basic switching devices D. In the second switching device B, the output terminals of the respective basic switching devices are commonly connected, and the input terminal receives the output signal obtained from this common connection point.

In the drawings, those having the same configuration including A and D have ′ attached to their respective symbols.

The indicator 3 of each basic switching device D is connected to the second switching device B by the "O" of the second switching circuit 1, 1'in the basic switching device D, D '.
With one bit of the control signal 2 supplied from the outside to the control circuit 6 for determining "N" or "OFF", the first switching devices A, A '
The in-use display of the second switching circuit 1, 1'of the inside is gated, and the in-use display is performed only for the switching device selected by the second switching device B.

[Problems to be solved by the invention]

However, in the display of the above-mentioned conventional switching device,
As shown in FIG. 3, a plurality of first switching devices systematically
Considering a special third switching device C composed of A and A ′ and the second switching device B, the display control signals supplied from the outside are the plurality of first switching devices A and A. Since it is common to all of the second switching devices B, it is not possible to display the busy status only in the first switching device A selected by the second switching device B, and a plurality of devices in the third switching device C can be displayed. First switching device
A and A ′ all have a drawback that they are displayed as being in use.

An object of the present invention is to provide a switching device that solves the above problems.

[Means for solving problems]

In order to achieve the above object, a switching device according to the present invention has a pair of first switching devices (A, A '), and either one of the first switching devices (A) or (A') is provided. Is a switching device for selectively switching and outputting the signal of No. 2 by the second switching device (B), wherein each pair of the first switching devices (A) and (A ') is a basic switching device (D). , D ′), (D ″, D) each having two sets, and each of the basic switching devices (D) of the first switching device (A),
(D ') and the respective basic switching devices (D ") and (D) of the other first switching device (A') form a set, respectively, and the basic switching devices (D, D) forming a set. ″) And (D ′, D) are selectively switched in group units and operate in conjunction with each group, and each basic switching device (D, D ′, D ″, D) is , Switching circuit (1,
1 ', 1 ", 1), control circuit (6,6', 6", 6) and indicator (3,3 ', 3 ", 3) The switching circuits (1,1 ″) and (1 ′, 1) of the devices (D, D ″) and (D ′, D) are selectively switched in units of groups, and the output signal of the second switching device ( B), and the control circuits (6,6 ″) and (6 ′, 6) of the basic switching devices (D, D ″) and (D ′, D) that make up the set are the switching circuits ( 1,1 ″),
Control condition signals (7,7 ″) for selectively switching and operating (1 ′, 1) in group units, switching circuits (1,1 ″), (1 ′, 7) forming a group of (7 ′, 7), (1 ′, 1) and outputs address data signals (4,4 ") and (4 ', 4) corresponding to control condition signals (7,7") and (7', 7), respectively, to a display (3,3). ″), (3 ′, 3), and each of the indicators (3,3 ″), (3 ′, 3) has a control signal (2) for the indicator that is constantly input and a control circuit. (6,6 ′, 6 ″,
When the control condition signal (7, 7 ', 7 ", 7) from 6) and the address data signal (4, 4', 4", 4) are input, they are respectively lit.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a simplified system diagram showing an embodiment of the present invention.

In FIG. 1, the switching device of the present invention has a pair of first switching devices A and A'in a third switching device C, and either one of the first switching devices A or A'is provided. The signal is output as the output signal 5 by the second switching device B.

Each of the first switching devices A and A ′ forming a pair is a basic switching device.
D, D ', D ", and D each have two sets, and each basic switching device D, D'of one first switching device A and each basic switching device of the other first switching device A'. The devices D ″ and D respectively form a pair.

The basic switching devices D and D ″, D ′ and D that form a set are selectively switched on a group-by-group basis and operate in association with each other. In D and D ″, if the switching device 1 of the basic switching device D to be described later is in the “ON” state, the switching circuit 1 ″ of the basic switching device D ″ is in the “ON” state, and a pair of basic switching devices is in the ON state. Instead of the devices D and D ″, the basic switching devices D ′, D forming a pair are switched, and the switching circuits 1, 1 ″ of the basic switching devices D, D ″ are “OF”.
When the "F" state is reached and the switching circuit 1'of the basic switching device D'described later is in the "ON" state, the switching circuit 1 of the basic switching device D described later is in the "ON" state. .

Each basic switching device D, D ', D ", D is a switching circuit 1,1', 1", 1
And control circuits 6,6 ', 6 ", 6 and indicators 3,3', 3", 3
And have.

The switching circuits 1 and 1 ″, 1 ′ and 1 of the basic switching devices D and D ″, D ′ and D, which form a set, are selectively switched in group units and output signals are output to the second switching device B, respectively. It is supposed to do.

The control circuits 6 and 6 ", 6'and 6 of the pair of basic switching devices D and D", D'and D are switching circuits 1 and 1 ", 1 '.
And the control condition signals 7 and 7 ", 7'and 7 for selectively switching and operating the group 1 and the group 1 are output to the pair of switching circuits 1 and 1", 1'and 1, and the control condition signal 7 and Address data signals 4 and 4 ", 4'and 4 respectively corresponding to 7", 7'and 7 are displayed on the indicators 3 and 3 ",
It outputs to 3'and 3. The address data signal 4,4 ', 4 ", 4 determines whether the control circuit 6,6', 6", 6 has its output selected by the second control circuit B based on the control data. Is output as
When the address data signals 4 and 4'are ON, the address data signals 4 "and 4 are OFF, or vice versa.

Each of the indicators 3, 3 ', 3 ", 3 has a control signal 2 for the indicator which is always input and control condition signals 7, 7', 7", 7 from the control circuit 6, 6 ', 6 ", 6. 7 and address data signals 4, 4 ',
It lights up when three signals of 4 "and 4 are input.

Next, the display states of the indicators 3, 3 ', 3 ", 3 will be explained with reference to FIG. 1 and Table 1 in relation to the operation of the first switching devices A, A'.

As shown in Table 1, the basic switching devices D, D ', D "and D shown in FIG. 1 have inputs (1) to (8) and (9) to (1), respectively.
6), (17) to (24), and (25) to (32) are assumed to be in charge of the switching device for switching the video / audio of the television signal transmission device.

The second switching device B outputs the signal (video / audio of the television signal transmitting device) from the switching circuit 1 or 1'of the first switching device A in the range of the inputs (1) to (16) as the output signal 5 In the range of the inputs (17) to (32), the switching circuit 1 ″ of the first switching device A ′ or the signal from the switching circuit 1 (video / audio of the television signal transmitting device) is output as the output signal 5. Assume it is a switch.

Further, the control circuit 6 outputs the control condition signal 7 and the address data signal 4 when the selection input signal input from the outside is in the range of inputs (1) to (8), and the control circuit 6 '
Is a selection input signal input from the outside (9) ~
When it is in the range of (16), it outputs the control condition signal 7'and the address data signal 4 ', and the control circuit 6 "outputs the selection input signal input from the outside in the range of inputs (17) to (24). In some cases, the control condition signal 7 ″ and the address data signal 4 ″ are output, and the control circuit 6 outputs the control condition signal when the selection input signal input from the external signal is in the range of inputs (25) to (32). 7 and address data signal 4 are output.

I. When the selection input signal is [1], the control circuit 6 operates, and the switching circuit 1 includes the control circuit 6
The state that receives the input from, that is, the "ON" state,
The switching circuit 1 ″ that operates in conjunction with the switching circuit 1 is also in the “ON” state.

Since the selection input signal is [1], the control circuit 6 receives the signal and outputs the control condition signal 7. On the other hand, the control circuit 6 ″ does not output the control condition signal 7 ″ because the signal is out of the assigned range. Therefore, the switching circuit 1 receives the control condition signal 7 and outputs the signal to the second switching device B.

The second switching device B outputs the signal from the switching circuit 1 as the output signal 5, assuming that the selection input signal is [1] and this is in the range of inputs (1) to (16).

In this case, since the control condition signal 7, the address data signal 4, and the display control signal 2 are input to the display device 3, the display device 3 is turned on. Further, since the control condition signal 7 ″ and the address data signal 4 ″ are not output from the control circuit 6 ″ to the display device 3 ″, they do not light up. The indicators 3'and 3 do not light up either.

II. When the selection input signal is [10], the control circuit 6'operates, and the switching circuit 1'is in the state of receiving the input from the control circuit 6 ', that is, the "ON" state, and the switching circuit 1' The switching circuit 1 that operates in conjunction with ′ is also in the “ON” state.

Since the selection input signal is [10], the control circuit 6'receives the signal and outputs the control condition signal 7 '. On the other hand, the control circuit 6 does not output the control condition signal 7 because it is a signal outside the assigned range. Therefore, the switching circuit 1'receives the control condition signal 7'and outputs the signal to the second switching device B.

The second switching device B outputs the signal from the switching circuit 1 ′ as the output signal 5 assuming that the selection input signal is [10] and this is in the range of the inputs (1) to (16).

In this case, since three signals of the control condition signal 7 ', the address data signal 4', and the display control signal 2 are input to the display 3 ', the display 3'is turned on. Further, the display device 3 displays the control condition signal 7 and the address data signal 4
It does not light because it is not output from. In addition, display 3,
The 3 ″ does not light up either.

III. When the selection input signal is [20], the control circuit 6 ″ operates, and the switching circuit 1 ″ is in the state of receiving the input from the control circuit 6 ″, that is, the “ON” state, and the switching circuit 1 ″ The switching circuit 1 that operates in conjunction with
N ”state.

Since the selection input signal is [20], the control circuit 6 ″ receives the signal and outputs the control condition signal 7 ″. On the other hand, the control circuit 6 does not output the control condition signal 7 because it is a signal outside the assigned range. Therefore, the switching circuit 1 ″ receives the control condition signal 7 ″ and outputs the signal to the second switching device B.

The second switching device B outputs the signal from the switching circuit 1 ″ as the output signal 5 assuming that the selection input signal is [20] and this is in the range of the inputs (17) to (32).

In this case, three signals of the control condition signal 7 ″, the address data signal 4 ″, and the display control signal 2 are input to the display device 3 ″, so that the display device 3 ″ is turned on. The display devices 3 and 3′3 are turned on. do not do.

IV. When the selection input signal is [30], the control circuit 6 operates, and the switching circuit 1 is in the state of receiving the input from the control circuit 6, that is, the “ON” state, and is linked with the switching circuit 1. The operating switching circuit 1'is also in the "ON" state.

Since the selection input signal is [30], the control circuit 6 receives the signal and outputs the control condition signal 7. On the other hand, the control circuit 6'does not output the control condition signal 7'because it is a signal outside the assigned range. Therefore, the switching circuit 1 receives the control condition signal 7 and outputs the signal to the second switching device B.

The second switching device B outputs the signal from the switching circuit 1 as the output signal 5 assuming that the selection input signal is [30] and this is in the range of the inputs (17) to (32).

In this case, since the control condition signal 7, the address data signal 4, and the display control signal 2 are input to the display device 3, the display device 3 is turned on. Also, the indicators 3, 3'3 do not light up.

[Effect of device]

As described above, according to the present invention, the control condition signal and the address data signal output when each control circuit operates individually are input to the gate of the display unit, and the control condition signal and the address data signal are input between the control signal for the display unit which is always input. Since the conditions are taken, there is an effect that the use display of only the basic switching device in operation can be easily and accurately displayed on the display.

[Brief description of drawings]

FIG. 1 is a simplified system diagram of a specially configured switching device using the present invention, FIG. 2 is a simplified system diagram of a conventional switching device, and FIG.
FIG. 1 is a simplified system diagram of a switching device having a special configuration using a conventional technique. 1,1 ', 1 ", 1 ... Switching circuit 2 ... Display control signal, 3,3', 3", 3 ... Display 4,4 ', 4 ", 4 ... Address data signal output from control circuit 5 ... Output signal from second switching device 6,6 ', 6 ", 6 ... Control circuit 7,7', 7", 7 ... Control condition signal A, A '... Switching device, B ... Second switching device D, D ', D ", D ... Basic switching device

Claims (1)

[Scope of utility model registration request] 1. A pair of first switching devices (A, A ') are provided, and a signal of either the first switching device (A) or (A') is sent to the second switching device (B). ), The first switching devices (A) and (A ′) forming a pair are the basic switching devices (D, D ′), (D ″, D). ) Each having two sets, each of the basic switching devices (D) of the first switching device (A),
(D ') and the respective basic switching devices (D ") and (D) of the other first switching device (A') form a set, respectively, and the basic switching devices (D, D) forming a set. ″) And (D ′, D) are selectively switched in group units and operate in conjunction with each group, and each basic switching device (D, D ′, D ″, D) is , Switching circuit (1,
1 ', 1 ", 1), control circuit (6,6', 6", 6) and indicator (3,3 ', 3 ", 3) The switching circuits (1,1 ″) and (1 ′, 1) of the devices (D, D ″) and (D ′, D) are selectively switched in units of groups, and the output signal of the second switching device ( B), and the control circuits (6,6 ″) and (6 ′, 6) of the basic switching devices (D, D ″) and (D ′, D) that make up the set are the switching circuits ( 1,1 ″),
Control condition signals (7,7 ″) for selectively switching and operating (1 ′, 1) in group units, switching circuits (1,1 ″), (1 ′, 7) forming a group of (7 ′, 7), (1 ′, 1) and outputs address data signals (4,4 ") and (4 ', 4) corresponding to control condition signals (7,7") and (7', 7), respectively, to a display (3,3). ″), (3 ′, 3), and each of the indicators (3,3 ″), (3 ′, 3) has a control signal (2) for the indicator that is constantly input and a control circuit. (6,6 ′, 6 ″,
6) Control condition signals (7,7 ', 7 ", 7) and address data signals (4,4', 4", 4) from 6) should be turned on when three signals are input. Switching device characterized by.