JPS6232596B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light control device used in television studios, theaters, etc., and more particularly to a light control device that uses a storage device to perform scene crossover by electronic control.

The automatic scene crossover method in conventional light control devices stores the time as XX minutes and seconds when automatically crossing over to the scene memory that stores the brightness level of each scene. On the other hand, as shown in FIG. 1, it is recycled and used by changing it proportionally and linearly.

However, in such cases, scene changes involve complex temporal processes and are not necessarily proportional changes. There is a process in which the scene suddenly changes quickly or changes slowly during the crossover of the scene, but traditionally this has been done in the form of manual correction, and such methods would result in complex changes. It was not possible to accurately reproduce the process.

The present invention eliminates the above-mentioned drawbacks, samples the change process during crossover, encodes and stores the amount of change over time, and reproduces this together with scene data, thereby accurately and automatically performing crossovers with change processes. The purpose of the present invention is to provide a light control device that can be used in a variety of ways.

That is, when switching between scenes using a manual crossfader, this invention encodes the amount of change in the crossfader, performs sampling according to a certain sampling time or the magnitude of the change signal amount, and stores it, and when playing back, this data and the scene It is possible to switch between scenes by calculating the data in the scene memory that stores the brightness level and supplying the calculated data to the load.

An embodiment of the present invention will be described below with reference to the drawings. In Fig. 2, 1 is a plurality of variable resistors provided for setting the level of each scene, 2 is a signal converter for converting the quantities set by these variable resistors into digital quantities, and 3 is a scene level setting. A scene level data memory for storing data. 4 is a time device such as a clock pulse generator, and 5 is an arithmetic processing unit for performing the entire arithmetic processing, which is operated by the operation of a control switch provided on a control console (not shown).

6 is a crossfader with manual lever from 0 to 100
Anti-parallel faders with %100-0% control are used. One output end of the crossfader 6 is connected via an A-D converter 7a to a process data memory 8a for storing data of a change process between scenes.
The other output terminal of is similarly connected to a process data memory 8b via an AD converter 7b. A key switch 9' is provided to operate the process data memories 8a, 8b, and a DA converter 9 is provided to convert the signals read from these memories 8a, 8b into analog quantities.
a and 9b are provided, respectively. 10a,1
0b is a switching circuit for selecting manual or automatic crossover.

The output terminals of the switching circuits 10a, 10b and the output terminal of the scene level data memory 3 are connected to multipliers 11a,
11b, and their output ends are further connected to an adder 12. This adder 12 is connected to sample and hold circuits 13 and 13 by a common line, respectively.
A plurality of lamps 15 via a dimming unit 14 etc.
It is connected to the. Note that those with a suffix a in the reference numerals indicate the configuration for the A scene, and those with the suffix b indicate the configuration for the B scene.

Next, the operation of this light control device will be explained. First, the level of each scene is set by a variable resistor 1 for level setting, and this is converted into a digital quantity via a signal converter 2.The arithmetic processing unit 5 is operated by operating a writing switch (not shown) to generate scene level data. Store it in memory 3.

On the other hand, the lever of the crossfader 6 is manually operated in accordance with the change process between scenes, and the outputs obtained thereby are sent to the A-D converter 7.
a, 7b to convert into digital quantities and store them in process data memories 8a, 8b. On this occasion,
A clock pulse is supplied from the time device 4, and the storage speed is set to a time with divisions of 128, 256, and 512, which pose no problem in use, and data sampled within that range is stored. Figure 3 shows A in this case.
It shows the change process of changing from scene to B scene.

Next, the switching circuits 10a and 10b are switched to the state shown by the broken line, and these process data memories 8a and 8
The change data of A is read out by operating the key switch 9' and is supplied to the multipliers 11a and 11b via the DA converters 9a and 9b.
Scene and B scene data are read and supplied to multipliers 11a and 11b. In this way, both data are multiplied and added by an adder to obtain a data signal for switching from the A scene to the B scene, thereby switching the lighting state of the lamp 15.

FIG. 4 shows the cross-over characteristics thus obtained, where a indicates the time of storage and b shows the time of playback.

In this manner, the light control device of the present invention can easily perform crossover of freely changing processes, which has been difficult in the past in television studios, theaters, and the like. For example, by using four cross faders with a structure as shown in Figure 2, 8
You can take the pattern process as you like, and you can make complex and diverse changes from the time you start the crossover until you reach the next scene.
It is possible to significantly expand the functionality of the dimmer.

Further, in FIG. 2, the switching circuits 10a, 10
It is also possible to perform an automatic crossover by manually operating the cross fader 6 with b in the state shown by the solid line.

Note that this invention is not limited to the above embodiments, and can be implemented with various modifications without changing the gist.

For example, in the above embodiment, crossover was performed by directly operating the key switch, but it can also be configured to be automatically controlled by external signals obtained from sound, light, frequency, voltage, heat, etc. . Further, in the above embodiment, switching is performed using a storage/reproduction switching circuit, but the present invention can also be configured to perform simultaneous control through electronic control using a timer counter. Further, in the above embodiment, sampling is performed based on time, but sampling may be performed based on the magnitude of the amount of changing signal.

As described above, according to the present invention, by sampling the change process during a crossover, symbolizing and storing the amount of change over time, and reproducing this together with scene data, a crossover having a change process can be accurately detected. In addition, it is possible to provide a light control device that can automatically adjust the light.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing crossover characteristics in a conventional light control device, Fig. 2 is a schematic configuration diagram of an embodiment of the present invention, and Fig. 3 is a diagram showing a crossover to explain time-division sampling. Characteristic diagram,
FIG. 4 is a sampling characteristic diagram according to the present invention, in which a indicates the time of storage and b indicates the time of reproduction. DESCRIPTION OF SYMBOLS 1... Variable resistor, 2... Signal converter, 3... Scene level data memory, 4... Time device, 5...
...Arithmetic processing unit, 6...Cross fader, 7a,
7b...A-D converter, 8a, 8b...Memory for process data, 9a, 9b...D-A converter,
10a, 10b...Switching circuit, 11a, 11b...
...multiplier, 12...adder, 13...sample hold circuit, 14...dimmer unit, 15...lamp.

Claims (1)

[Claims] 1 An element for scene level setting, a scene level data memory for storing a plurality of scene level data set by this element, an arithmetic processing unit for linking each component, a cross fader for control, and A process data memory provided in a pair to store process data between scenes obtained by operating a crossfader, and a pair provided in a pair to multiply the outputs of the scene data memory and these process data memories, respectively. A light control device includes a multiplier that adds up the outputs of these multipliers, an adder that adds the outputs of these multipliers, and a lighting load that lights up based on the output of the adder.