JPH0259598B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a light control device for controlling the light of a stage or the like.

BACKGROUND ART In conventional memory-type dimming devices, dimming level values of each circuit for dimming each lighting load are stored and reproduced for each scene. Such a dimming device has to store dimming level values for all circuits regardless of whether or not there is a change in the illumination level of each lighting load, requiring a large amount of storage capacity.

FIG. 1 is a graph showing the relationship between the scene and dimming level value of each circuit for dimming a lighting load in a conventional dimming device. Figure 2 is a diagram showing the dimming level value stored in the circuit for each scene, and here the dimming level value changes in each scene for the purpose of saving storage capacity. Indicates that the circuit is not actually stored. This will be explained below with reference to FIGS. 1 and 2.

For example, if the current state is set to scene 1 and skipping is performed to scene 4, the lighting load is dimmed at the dimming level value reached at scene 4. However, in scene 4, only circuit 3 has the dimming level value stored in advance, and circuit 1 and circuit 2
When the dimming level value is not stored in advance in circuit 1 and circuit 2, the dimming level value in scene 1 is maintained, so circuit 1 maintains the dimming level value 3, and circuit 2 maintains the dimming level value. It becomes 2.

However, the operator expects a scene change in the middle of the jump from scene 1 to scene 4, and thinks that the light control level of scene 4 will be reached. That is, fade control is performed to sequentially move from scene 1 to scene 4, and it is expected that the light will be dimmed in scene 4 at the same level as the dimming level reached in scene 4. In other words, circuit 1
For circuit 2, the dimming level value is 6, and for circuit 2, the dimming level value is 5.
Circuit 1
For circuit 2, the dimming level value is 3, and for circuit 2, the dimming level value is 2.
becomes. However, since the circuit 3 is stored in advance, the dimming level value is 1. In this way, if the operator performs skipping, he or she will not be able to obtain the dimming level that he or she is aiming for.

Purpose An object of the present invention is to reduce the capacity for storing the lighting load level for each scene, and to maintain the desired dimming state of each lighting load even when the scene is changed by skipping in an order other than the stored order. An object of the present invention is to provide a light control device that can obtain the following.

Embodiment FIG. 3 is a block diagram showing the electrical configuration of an embodiment of the present invention. The control unit A includes an arithmetic circuit 1
A, output circuit counter 2A, comparator 3A, scene counter 4A, and memory circuit counter 5
It has A. The scene counter 4A counts the number of scenes from the current scene to the scene reached when a jump operation is performed. The output circuit counter 2A sequentially counts the circuits in which the output section E that dims each lighting load is used. The storage circuit counter counts circuit numbers stored in areas 1B and 2B of storage section B and used as identification signals for lighting loads. The storage unit B stores circuits whose dimming levels change for each scene and dimming level values corresponding to the circuits. Comparator 3
A compares the counter value of the output circuit counter 2A with the circuit number value of the storage section B, and if they match, gives a match signal to the output section E. Arithmetic circuit 1A
is an output circuit counter 2A, a comparator 3A, a scene counter 4A, and a memory circuit counter 5A.
Give each control signal to. Output section E always stores the current dimming level for all circuits, and comparator 3
Only when a matching signal from A is received, the dimming level value stored in the area of the storage unit B corresponding to the matching signal is received and stored, and furthermore, a dimming signal is given to the lighting load.

Here, the scene skipping operation will be explained with reference to the flowchart shown in FIG. step n
When a scene jump is instructed in step n2, the next scene is set in step n2. That is, the scene counter 4A of the control section A is sequentially set to count preset scene numbers up to the jump. At step n3, the output circuit counter 2A is initialized, for example, the initial value is set to 1, and the initial value 1 is given to the comparator 3A. At the same time, the circuit 1 of the output section E corresponding to the content 1 of the output circuit counter 2A becomes writable. In this state, the memory circuit counter 5 is
A is initialized, for example, its initial value is set to 1, and in step n5 area 1 of storage section B is
The first circuit number value of B and its dimming level value are read out. The circuit number value is given to the comparator 3A, and the dimming level value is given to the output section E.

At step n6, the comparator 3A compares the counter value from the output circuit counter 2A and the circuit number value from the storage section B, and when they match, the process moves to step n7, and when they do not match, the process moves to step n8. At step n7, the dimming level value read out from the storage section B is written into the currently writable circuit, for example, the circuit 1 of the output section E, in response to the match signal from the comparator 3A. When the counter value and the circuit number value do not match, writing to the output section E is not performed, and each circuit of the output section E maintains the dimming level value as it is.

Next, in step n8, the memory circuit counter 5A is counted up. For example, scene n
When the dimming level is specified, the memory circuit counter is incremented by 2, 3, . . . , m.
At step n9, it is determined whether or not the memory circuit counter has reached m. When it has reached m, the process moves to step n10, and when it has not reached m, the process moves to step n5.
Return to At step n10, the output circuit counter 2A is counted up, and the memory circuit counter 5A is initialized. Output circuit counter 2A
is up to all circuit numbers used in output section E,
For example, it is counted up as 1, 2, . . . , M. In step n11, the output circuit counter 2
It is determined whether the counter value of A has reached the final value M, and when it has reached it, the process moves to step n12.
If not, the process returns to step n4. step n
At step 12, the scene counter 4A counts up. For example, if the current scene number is n-1, the scene counter 4A counts up n, n+1.

At step n13, it is determined whether or not the scene number in the scene counter 4A has reached the jump scene specified by the operator. When the scene number has reached the jump scene specified by the operator, the jump operation is completed, and when the scene number has not reached the jump scene, the jump operation is completed. return. As the scene is skipped by the above operation, circuit 1 obtains a dimming level value of 6, and circuit 2 obtains a dimming level value of 5, as expected by the operator in FIG. be able to. Therefore, the operator can maintain the dimming level of the lighting load that does not change even if the scene skipping operation is performed.

Note that the control section A in FIG. 3 can also be realized by a microcomputer or the like.

As described above, according to the present invention, among the dimming levels of the lighting loads for each scene, the number and dimming level of the circuit corresponding to the lighting load whose dimming level is different from the dimming level in the immediately previous scene. Remember only the value. Even when dimming a large number of loads, each scene rarely uses all the circuits; for example, in a play, at most three of the circuits are used.
~40%. Compared to conventional memory-type dimming devices in which dimming level values for all circuits are stored for each scene, the present invention can reduce the overall storage capacity.

Further, according to the present invention, a scene counter that sequentially generates a designation signal that designates each scene is provided, and the lighting load for each scene in the storage unit corresponding to each scene from the current scene to the desired scene is adjusted. Since the light levels are read out sequentially and stored in the storage area of the corresponding lighting load in the output section E,
Not only when changing scenes in a predetermined order, but also in other orders, i.e., when skipping one or more scenes to obtain the dimming state of the next scene, the desired lighting conditions can be set for each lighting load. Accurate dimming levels can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a graph showing the relationship between each circuit that dims a lighting load in a conventional dimmer and the dimming level, and FIG. Diagram showing light levels,
FIG. 3 is a block diagram showing the electrical configuration of an embodiment of the present invention, and FIG. 4 is a flowchart for explaining the interleaving operation of the embodiment shown in FIG. A...control section, B...storage section, E...output section.

Claims (1)

[Scope of Claims] 1. A plurality of lighting loads, an output unit E that stores a dimming level for each lighting load, and a plurality of lighting loads that respond to the output of the output unit E and output each lighting load to each lighting load of the output unit E. means for driving to a dimming level corresponding to the lighting load of each scene, provided for each of the plurality of scenes, and driving the dimming level of the lighting load for each scene in a predetermined order of the scenes; storage units 1B and 2B that store an identification signal of a lighting load having a dimming level different from the level and a dimming level after the change; and a scene counter 4A that sequentially specifies the scenes in the order. , a specifying means for specifying a scene to be reached next, a means for reading out a circuit number and a dimming level value in a storage section individually corresponding to each specified scene, and dimming control is performed. The dimming level of the lighting load for each scene from the storage unit corresponding to each scene from the current scene to the scene specified by the specifying means is sequentially read out, and the storage area of the corresponding lighting load is stored in the output unit E. and means for storing the dimmer.