JPS5836476B2 - Stage dimming monitor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of the dimming level display unit in a storage type stage light control device G that controls lighting by sequentially outputting the dimming level of each scene from a storage device.

Conventionally, in this type of light control device, as shown in Fig. 1,
The current scene dimming level a is stored in the computer storage device 1.
and the next scene dimming level b simultaneously as a digital signal {
The D/A converters 2 and 3 convert this into an analog signal, and then the crossfader 4 is applied to control the load, and the analog output of both the D/A converters 2 and 3 is switched to a selector switch 21. In addition to the dimming level meter 22 via the switch 21, the current scene level and the next scene level are monitored by manually switching the changeover switch 21.

However, with this conventional force method, the dimming level of both scenes can be adjusted simultaneously to Q.
It is difficult to compare the two levels because you cannot see them.
This operation also had the disadvantage of being troublesome.

The present invention aims to solve the above problems.

The following is an embodiment diagram (to describe the present invention in detail, 1 is a computer storage device that sequentially stores the dimming level of each scene such as a play, the dimming level a of the current scene and the dimming level b of the next scene. and are simultaneously output as digital signals.

2 and 3 are D/A converters that convert each digital signal into an analog signal; 4. The crossfader switches from the current scene's dimming level to the next scene's dimming level of 0. Based on the operating voltage Q output from the crossfader 4, the dimming unit 5 controls the phase of the power applied to the lamp load 6. There is.

7 is a simultaneous display circuit that produces composite signal C from both digital signals a and b; 8 is a plurality of incandescent lamps or LEDs;
The lamps are arranged in a bar graph display.
As will be described later, the current scene level a and the next scene level b are displayed simultaneously.

FIG. 3 shows a specific circuit of the simultaneous display circuit 7 in FIG.
ED) It consists of three pieces.

9 and 10 are diode magnets l- for decoding the current scene digital signal a and the next scene digital signal b, respectively.
Figure 4 shows the input/output correspondence of the IJ circuit.

Fig. 4a shows the input/output of the current scene matrix circuit 9, and b shows the input/output of the next scene matrix circuit 10.
(In this case, only the output terminal corresponding to the dimming level is
H! 1 level, and in a+, all output terminals below the dimming level are at It H I+ level.

The output of this b is passed through the gate 12 which is opened by the clock output of the blinking pulse oscillation circuit 11, and together with the output of Q and a (if this exclusive OR circuit 131 is added, the output is as shown in FIG. 5G). A composite signal C is obtained.

In FIG. 5, the current scene level a lights up all lamps below a predetermined height on the bar graph display 8, and the next scene level b causes only one lamp of a predetermined height to blink, so a composite signal C is used. In this case, one of the bars representing the current scene level flashes to represent the next scene level, allowing you to see the levels of both scenes at a glance.

Note that by replacing the current limiting resistor R of the LED in Fig. 3 with a parallel resistor R and R2Q as shown in Fig. 6, and making R, > R2, instead of displaying the next scene level by blinking,
It is also possible to display this by changing the brightness.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of the conventional example, FIG. 2 is a block circuit diagram of the embodiment of the present invention, FIG. FIG. 5 is also a diagram for explaining the operation, and FIG. 6 is a circuit diagram of the main part of another embodiment. 1...Storage device, 2...D/A converter for current scene level, 3...D for next scene level
/A converter, 4...Cross fader, 5...
...Dimmer unit, 6...Lamp load, 7.
... Simultaneous display circuit, 8 ... Bar graph display, 9.10 ... Matrix circuit, 1
1... Pulse generation circuit for blinking.

Claims (1)

[Claims] 1 Each dimming level of the current scene and the next scene, which are simultaneously output as digital signals from the storage device, is
A crossfader O is added through the A converter O, and the output of the crossfader is sent to the dimmer unit (to control the lamp load). A stage light control monitor consisting of a bar graph display (in addition, when the current scene level is displayed as a bar graph), the next scene level is displayed by blinking or brightness modulation of a corresponding lamp on the bar graph display. Device.