JPH05110907A - Matrix switcher - Google Patents

Abstract

PURPOSE:To reduce energy consumption by supplying power only to a signal input means inputting signals. CONSTITUTION:When a control part 20 supplies power to a signal switcher 10b and outputs signals inputted to a signal input terminal 13 from a signal output terminal and signals inputted to the signal input terminal connecting the output terminal of the signal switcher 10b are outputted from a signal output terminal 35 of a signal switcher 30, signals inputted to the signal switcher 10b are outputted from the signal output terminal 35 of the output signal switcher 30. At such a time, power is supplied only to the signal switcher 10b and the output signal switcher 30 and is not supplied to signal switchers 10a, 10c and 10d and therefore, energy consumption is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a matrix switcher, and more particularly to a matrix switcher suitable for use in a television studio transmission system.

[0002]

2. Description of the Related Art Conventionally, a matrix switcher of this type is known as shown in FIG. In the figure,
A plurality of signal input terminals 1 arranged in the horizontal direction, a plurality of signal output terminals 2 arranged in the vertical direction, and each signal input terminal 1
And a switch element 3 in the form of a matrix, which is connected to the signal output terminal 2 to make them conductive or non-conductive.
A control unit 4 is provided for controlling conduction / non-conduction of each switch element 3 so as to form a desired signal input terminal 1 and signal output terminal 2 signal path in accordance with a control input signal.

Then, the control unit 4 controls so that the necessary switch element 3 is made conductive and the other switch elements 3 are made non-conductive in accordance with the control signal, and the desired signal input terminal 1 and signal output terminal 2 are connected. The signal path of is formed.

[0004]

In the above-mentioned conventional matrix switcher, it is necessary to supply power to the switch element for making it conductive, and at the same time supply power to the switch element for making it non-conductive.
There is a problem that the power consumption becomes too large when the number of matrix array elements is large. In particular, in the case of the ECL logic circuit, there is no difference in power consumption between the switch element for making it conductive and the switch element for making it non-conductive, so that the power consumption increases.

The present invention has been made in view of the above problems, and an object thereof is to provide a matrix switcher with low power consumption.

[0006]

In order to achieve the above object, the invention according to claim 1 is provided with a plurality of input terminals and outputs a plurality of input signals at one input terminal designated when power is supplied. Signal switching means, output switching means for connecting the plurality of signal switching means to a plurality of input terminals and outputting one designated input signal, and switching of the output switching means corresponding to an input signal to be selected. The control unit supplies power to one of the signal switching means to which the input signal to be selected is input, and controls the switching.

[0007]

In the invention according to claim 1 configured as described above, the control section supplies the power to the signal switching means to which the input signal to be selected is inputted and the switching of the signal switching means. To output the input signal to be selected, and to specify the switching of the output switching means so as to select the signal switching means outputting the input signal to be selected corresponding to the input signal to be selected. To do. That is, power is supplied only to the output switching means and the signal switching means to which the input signal to be selected is input.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a matrix switcher according to an embodiment of the present invention. In the figure, each of the four signal switching devices 10 (10a to 10d) includes four signal input terminals 11 to 14, and the control unit 2
It is connected to 0 to control power supply and signal switching. That is, each signal switch 10 receives from the signal output terminal 15 the input signal input to any one of the signal input terminals 11 to 14 according to the designation of the controller 20 when the power is supplied from the controller 20. Output.

The output signal switcher 30 has four signal input terminals 31 to 34, and the signal output terminals 15 of the four signal switchers 10 are connected to the respective signal input terminals 31 to 34. Then, the input signal input to any of the signal input terminals 31 to 34 according to the designation of the control unit 20 is output from the signal output terminal 35. The output signal switch 30 is always supplied with power.

Next, the operation of this embodiment having the above structure will be described. Now, as shown in FIG. 2, the signal switch 10b
Suppose that the user is trying to select the signal input to the signal input terminal 13. In this case, the control unit 20 supplies power to the signal switch 10b, and the signal input terminal 1
The signal input to 3 is output from the signal output terminal 15. Further, the control unit 20 causes the signal output terminal 35 to output the signal input to the signal input terminal 32 to which the signal output terminal 15 of the signal switch 10b is connected to the output signal switch 30.

By such control, the signal input to the signal input terminal 13 of the signal switch 10b is output from the signal output terminal 35 of the output signal switch 30. The power is supplied to the signal switch 10b and the output signal switch 30 at this time.
Since power is not supplied to c and 10d, power consumption is small.

[0012]

As described above, according to the present invention, an input signal is divided into a plurality of signal input means and input, and the power is supplied only to the signal input means to which the input signal to be selected is input. It is possible to provide a matrix switcher capable of reducing power consumption as compared with supplying power to all signal input means.

[Brief description of drawings]

FIG. 1 is a block diagram of a matrix switcher according to an embodiment of the present invention.

FIG. 2 is a block diagram showing on / off control of a power supply and selection control of an input signal in a matrix switcher.

FIG. 3 is a block diagram of a conventional matrix switcher.

[Explanation of symbols]

 10 (10a to 10d) ... Signal switching device 11-14 ... Signal input terminal 15 ... Signal output terminal 20 ... Control unit 30 ... Output signal switching device 31-34 ... Signal input terminal 35 ... Signal output terminal

Claims (1)

[Claims] 1. A plurality of signal switching means having a plurality of input terminals for outputting an input signal at one designated input terminal when power is supplied, and the plurality of signal switching means are connected to the plurality of input terminals. Output switching means for outputting one input signal designated by the above, and switching of the output switching means is designated corresponding to the input signal to be selected, and the input signal selected by the output switching means is inputted. Supply power to
A matrix switcher, comprising: a control unit for designating the switching.