JPH0352199B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a light control device for use on a stage or in a studio.

BACKGROUND ART An example of a conventional light control device is Japanese Patent Publication No. 51-39465. This dimmer cross-fade the lighting level, that is, the lighting level of each dimmer unit is gradually faded between the lighting level of one scene and the next scene. It can be changed to move to . However, in this prior art example 1, dimming control cannot be performed so that the illumination level changes periodically.

Conventional example 2 includes a configuration as shown in FIG. That is, the output of an effect waveform generator 51 that generates a level that changes over time, instead of the usual flat lighting level signal, is controlled by a master fader 52 to drive a lighting load 54 via a dimming unit 53. It is. 1st
Figure 1 shows the output of the effect waveform generator 51,
FIG. 12 shows changes in the output illumination level with respect to the movement of the master fader 52. That is, by moving the master fader 52, the amplitude of the output of the effect waveform generator 51 can be controlled. However, in the conventional example 2, it is possible to perform amplitude control only between a zero level and a periodically changing state. i.e. at a certain level (e.g. 50
%) and the periodic amplitude change state cannot be controlled.

Purpose An object of the present invention is to enable fade control to be applied to a state in which the illumination level of a dimmer unit changes periodically, and to change the magnitude of the amplitude as the fade progresses so that the illumination level does not reach zero level. It is an object of the present invention to provide a light control device capable of controlling fade-in from a certain level to a state where the level changes periodically, or fade-out from a state where the level changes periodically.

Embodiment 1 FIG. 1 is a block diagram showing the basic configuration of the present invention, FIG. 2 is a block diagram showing the calculation section 3, and FIG. 3 is a waveform diagram of Ad and Bd inputs to the calculation section 3. FIG. 4 is a block diagram showing the configuration of an embodiment of the present invention. With reference to Figures 1 to 4,
The configuration of the present invention will be explained.

An operating section 1 has operating means for determining the illumination levels of a plurality of scenes of a plurality of dimming units, and an operating means for determining the progress of transition (fade) of illumination levels between scenes; The illumination level Ad of the two scenes for each dimmer unit
Fade progress data F (degree of completion of fade) according to the fade progress determined by Bd and operation unit 1
The calculation section 3 performs the fade calculation, Od=Bd+F(Ad-Bd) (4), and outputs the dimming output level Od of each dimming unit, which is the calculation result, to the dimming signal output section 2 at the next stage. , a dimming signal output unit 2 that outputs a dimming signal for controlling the illumination level to each dimming unit based on the dimming output level from the calculation unit 3;
A control section 4 that controls each of the above sections is included in the light control device 5. The dimming signal output section 2 and the control section 4 constitute a control means. The output of the dimming signal output section 2, that is, the output of the dimming device 5 drives a lighting load 7 via a dimming unit 6.

Specifically, as shown in Figure 4, the scene level (effect belt) changes periodically in a much shorter time than the time it takes to complete a fade with a normal cross fader (about 8 to 10 seconds). The effect waveform generating section 8 is an effect signal generating means, the level signal generating section 9 is a level signal generating means for setting and generating a temporally constant flat illumination level, and two variable resistors are reversely connected. The cross fader section is a cross fade means that is controlled by a single knob (the scale on the knob represents the degree of progress F of the fade as a percentage, one variable resistor generates an F signal, and the other generates a (1-F) signal. ) 10 is connected to the arithmetic unit 11.

When the calculation unit 11 inputs level A, level B, fade progress F and (1-F), it calculates the level change due to the fade from level B to level A, O=B+F(A-B)=AF+B( 1-F) ...(5) is applied to the integrator 12, 1 which is the first and second multiplication means.
3 and the adder 14 which is the addition means, and outputs the output level O to the dimming unit (the level change due to the fade from level B to level A is a straight line with an inclination of (represented by the fifth equation above). The output of the effect waveform generator 8 is
The A input of the calculation section 11 is connected to the output of the level signal generator 9, and the B input is connected to the output of the level signal generator 9.

Here, as shown in FIG. 5, the output B signal of the level signal generator 9 is a signal that alternately repeats a level of 50% and an effect level A signal of 0% and 100%, and the fade progress data F is Consider the case where the change occurs as follows. When the fade progress data F is 0%, the output O signal is equal to the B signal, and when the fade progress data F is 100%, the output O signal is equal to the A signal. Fade progress data Intervals 1, 3, and 5 during the change of the F signal are fade changes from 50% level of the B signal to 100% of the A signal, and intervals 2, 4, and 6 are 0% of the A signal. It is a fade change to. As a result,
It becomes like the 0 signal in FIG. 54.

FIG. 6 shows the waveforms and operations when the effect waveform A signal is different. The process of obtaining the output O signal is similar to the previous case. That is, with this configuration, it is possible to realize a fade from a flat level to an effect level where the level changes. By moving the crossfader 10 in the opposite direction, a fade from the effect level to a flat level can also be achieved.

Example 2 The configuration is shown in FIG. That is, in the first embodiment described above, instead of the level signal generating section 9, an effect generating section 15, which is a second effect signal generating means, is connected. The output waveforms of the effect generators 8 and 15 have different amplitudes but exhibit similar changes.

The operation is shown in FIG. When effect waveforms A and B signals with different amplitudes and the same change are input and the fade is advanced, the amplitude of the output O signal is changed by advancing the fade between the amplitudes of the effect waveforms A and B signals. can be done.

Example 3 The configuration is shown in FIG.

The illumination level of each scene for each dimming unit determined by the operation section 43 is stored in the main storage section 44.
To reproduce those stored data, before starting the fade (scene transition), the illumination levels of all the dimming units of the A scene are stored in the storage unit 45, and the illumination levels of all the dimming units of the B scene that should be reached after being faded are stored in the storage unit 45. The illumination levels are each stored in the storage section 46 from the main storage section 44 . This is not done while the fade is in progress. The calculation unit 47 uses the data stored in the storage units 45 and 46 and the fade progress data F determined by the operation unit 43 to calculate the dimming output level Od.

This calculation is performed periodically for all dimming units. The period is such that the output light on the stage changes smoothly, and is usually about 40 to 50 msec. The dimming output level Od, which is the output from the calculation section 47, is adjusted by the sample/hold (hereinafter abbreviated as S/H) circuit 49, which is a dimming signal output section, via the D/A converter 48. It is distributed to each dimming unit as a DC voltage proportional to the optical output level to drive the load.

The storage unit 45 also stores the illumination level Ad of each dimming unit in the A scene at an address corresponding to each dimming unit. The storage unit 46 stores the illumination level Bd of each dimming unit in the B scene at an address corresponding to each dimming unit.

The ROM 52, which is the first multiplication means, is always in the read mode, and when the illumination level Ad and the fade progression data F are simultaneously given as addresses, it outputs Ad×F as data. Further, the ROM 53, which is the second multiplication means, is also always in the read mode, and when the illumination level Bd and fade progress data F are given as addresses at the same time, the data is
Output Bd×(1-F). An arithmetic unit 47 is provided as an adding means for adding the outputs of the ROMs 52 and 53 and outputting a dimming output level Od.

Further, the output of the D/A converter 48 which converts the dimming output level data which is the output of the calculation unit 47 which is digital data into analog data is used as an address to instruct the dimming unit and to instruct the dimming output level writing. Then, the dimming output level at that time is given to the distribution section 54 which outputs the dimming output level to the dimming unit designated by the address. The output of the distribution section 54 is given to the S/H circuit 49 which holds the output voltage of the distribution section 54 as described above.

It is output when the timing R for reading and writing data in the storage units 45 and 46, the count instruction for the number d, and the dimming unit number d are stable. A counter 55 is provided that outputs each dimming output level writing instruction W.

The analog output of the fade advancing fader (0 position is B scene, 1 position is A scene, and the fade between B scene and A scene can be advanced by moving the knob) of the operation unit 43 is converted into a digital quantity. An A/D converter 56 for converting the light into F is provided, and a control circuit (CPU) 57 for controlling the entire dimming device is provided.

It also generates an effect level in accordance with instructions from the control circuit (CPU) 57, and
An effect control section 67 (which functions in the same way as a control circuit (CPU) for storage sections A and B) for storing data is provided in 66 .

Effect level of each dimming unit in A scene
A storage unit 65 stores EAd in an address corresponding to each dimming unit, a storage unit 66 stores the effect level EBd of each dimming unit in the B scene in an address corresponding to each dimming unit, and each dimming unit Data for controlling whether the A scene and B scene levels of each dimming unit are set to the normal illumination level or the effect level is stored in the address corresponding to the unit, and the following switching means 68 ，
A switching control section 70 for controlling signal switching of 69 is provided. Also, by switching between Ad and EAd, the arithmetic unit 47
The configuration includes a switching means 71 for switching between Bd and EBd, and a switching means 72 for switching between Bd and EBd and outputting the same to the calculation section, and other switching means 58.

That is, the storage units 65 and 66, together with the effect control unit 67, constitute first and second effect signal generation means, respectively. Storage section 45
and 46, together with the main storage section 44, the storage section 45, and the control circuit 57, constitute first and second level signal generation means, respectively. The operating section 43 and the A/D converter 56 constitute crossfade means.

Data in the switching control section 70 is changed through the switching means 73 at this timing when writing data to the storage sections 45 and 46. The control circuit unit (CPU) 57 is controlled by the memory units 45 and 4.
This is similar to the data change in step 6.

The effect control circuit 67 also changes the data in the storage sections 65 and 66 through the switching means 68 and 69 at this timing. Control of the effect control circuit 67 is similar to changing data in the storage units 45 and 46 of the control circuit (CPU) 57.
However, the data in the storage units 45 and 46 was changed only before the start of the fade;
5 and 66 are levels that constantly change, so they are not limited to only before the start of the fade.

During fade calculation and output operation When the R signal is at a high level, the memory units 65 and 6
6 and the switching control section 70 are also in the read mode.

According to the address instruction of the distribution section 54 by the output of the dimming unit number d of the counter 55, the storage section 4
Similarly to 5 and 46, addresses in storage units 65 and 66 are also specified, and the effect levels EAd and EBd of the specified dimming units are output. At the same time, the address of the switching control section 70 is also instructed, and a switching instruction is output. In response to this switching instruction, the switching means 71, 72 outputs either the flat illumination level or the effect level to the calculation section 47.

In this embodiment, in addition to the normal fade between flat levels, it is also possible to control the fade between the flat level and the effect level, or the fade between the effect levels.

Effects As described above, according to the present invention, the illumination levels of the plurality of dimming units 6 can be controlled to fade between a state in which the level changes periodically and a state in which the level is constant over time. I can do it.

Further, according to the present invention, the illumination levels of the plurality of dimming units 6 can be controlled to fade between states in which the levels change periodically.

Furthermore, according to the present invention, a plurality of dimming units 6
The subject of fade control of the illumination level can be switched between a state where the level changes periodically and a state where the level is constant over time.

Therefore, the state in which the illumination level of the dimming unit 6 changes periodically can be subject to fade control, and the amplitude of the level change is changed as the fade progresses, thereby controlling the state in which the level changes. It is possible to control the fade-in to or fade-out from a state where the level changes.
This makes it possible to obtain a sufficient dimming performance effect in dimming light control for stages, studios, and the like.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the basic configuration of the present invention, Fig. 2 is a block diagram of the calculation section 3, and Fig. 3 is a block diagram showing the basic configuration of the present invention.
Waveform diagrams of Ad and Bd inputs. Figure 4 is a block diagram of the first embodiment. Figures 5 and 6 are waveform diagrams showing the operation of the configuration in Figure 4. Figure 7 is a block diagram of the second embodiment. 8 is a waveform diagram of the second embodiment, FIG. 9 is a block diagram of the third embodiment, FIG. 10 is a block diagram of the prior art, and FIGS. 11 and 12 are waveform diagrams of the prior art. be. 43...Operation unit, 44...Main storage unit, 45, 4
6...Storage unit, 47...Calculation unit, 55...Counter, 56...A/D converter, 57...Control circuit,
58-60, 68, 69, 71-73...Switching means.

Claims (1)

[Scope of Claims] 1. Effect signal generating means 8 for generating a signal representing an effect waveform A for periodically changing the illumination level of the plurality of dimmer units 6, and each dimmer of the plurality of dimmer units 6. A level signal generating means 9 generates a signal representing a temporally constant illumination level B for each unit 6, and the illumination level of the plurality of dimming units 6 is expressed by the signal from the effect signal generating means 8. represents a first degree of progress F for a fade that is gradually transitioned between the illumination level according to the effect waveform A and the illumination level B represented by the signal from the level signal generating means 9; a crossfade means 10 for deriving a signal representing the signal and the second degree of progress (1-F); and in response to the signal from the effect signal generating means 8 and the signal representing the first degree of progress F from the crossfade means 10; a first multiplication means 12 for deriving a signal representing the product of the levels represented by these signals; responsive to the signal from the level signal generation means 9 and the signal representing the second degree of progression (1-F) from the crossfade means 10; and a second multiplication means 13 for deriving a signal representing the product of the levels represented by these signals.
and addition means 14 which responds to the signals from the first and second multiplication means 12 and 13 and derives a signal representing the sum O of the levels represented by these signals, O=AF+B(1-F)...(1) and means 2 and 4 for controlling the illumination levels of the plurality of dimming units 6 to a value represented by the sum O in response to the signal representing the sum O from the adding means 14. Light control device. 2. A first effect signal generating means 8 that generates a signal representing the first effect waveform A for periodically changing the illumination level of the plurality of dimming units 6.
and a second effect signal generating means 15 for generating a signal representing a second effect waveform B for periodically changing the illumination level of the plurality of dimming units 6.
and adjusting the illumination level of the plurality of dimming units 6 to the illumination level according to the first effect waveform A represented by the signal from the first effect signal generation means 8 and the illumination level according to the first effect waveform A represented by the signal from the second effect signal generation means 15. a signal representing a first degree of progression F for a fade that is gradually transitioned between an illumination level according to a second effect waveform B represented by a signal and a second degree of progression (1-F); a crossfade means 10 for deriving a signal representing the first degree of progress F in response to a signal from the first effect signal generation means 8 and a signal representing the first degree of progress F from the crossfade means 10; and a signal representing the product of the levels represented by these signals. first multiplication means 12 for deriving
and, in response to the signal from the second effect signal generation means 15 and the signal representing the second degree of progress (1-F) from the crossfade means 10, derives a signal representing the product of the levels represented by these signals. In response to the signals from the square multiplication means 13 and the first and second multiplication means 12 and 13, a signal representing the sum O of the levels represented by these signals, O=AF+B(1-F)...(2) is derived. and means 2 and 4 for controlling the illumination levels of the plurality of dimming units 6 to a value represented by the sum O in response to a signal representing the sum O from the addition means 14. A light control device comprising: 3. A first effect signal generating means 6 that generates a signal representing an effect waveform EAd for periodically changing the illumination level of the plurality of dimming units 6.
5, 67, and first level signal generating means 43, 44, 4 for generating a signal representing a temporally constant illumination level Ad for each of the plurality of dimmer units 6.
5, 57, and second effect signal generating means 66, 6 for generating a signal representing an effect waveform EBd for periodically changing the illumination level of the plurality of dimming units 6.
7, and second level signal generating means 43, 44, 4 for generating a signal representing a temporally constant illumination level Bd for each of the plurality of dimming units 6.
6, 57, first effect signal generating means 65, 67 and first level signal generating means 43, 44, 45,
57 and derives one of the signals as a signal representing the illumination level Ad; second effect signal generating means 66, 67; and second level signal generating means 43. ,44,46,
a second switching means 72 that responds to the signal from the first switching means 71 and derives one of the signals as a signal representing the illumination level Bd; a signal representing a degree of progress F for a fade to be gradually transitioned between the illumination level Ad represented by the signal and the illumination level Bd represented by the signal from the second switching means 72; Crossfade means 43, 56 for deriving
and a first multiplication means 52 for deriving a signal representing the product of the levels represented by these signals in response to the signal from the first switching means 71 and the signals from the crossfade means 43, 56; and a second switching means. In response to a signal representing the dimming level Bd from the means 72 and a signal representing the degree of progress F from the crossfade means 43, 56, Bd×(1−
A second multiplication means 53 for deriving a signal representing the product represented by F), and responsive to signals from the first and second multiplication means 52, 53, the level represented by these signals and the sum Od, Od= Adding means 61 for deriving a signal representing Ad×F+Bd×(1-F)...(3); and in response to the signal representing the sum Od from the adding means 61, the sum of the illumination levels of the plurality of dimming units 6. Od
A light control device comprising means 2 and 4 for controlling the light to a value expressed by .