JPH0687434B2 - Dimmer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimmer for a stage or a studio.

2. Description of the Related Art A dimming device is a scene where a dimming level of a plurality of lighting loads set by operating means such as a numeric keypad or a preset fader is realized, or a group of the dimming levels (hereinafter, It is a device that realizes the transition (hereinafter referred to as "scene") (hereinafter referred to as "cross fade"), and is used for improving the effect of production on the stage or in the studio.

FIG. 8 is a block diagram showing the basic structure of the light control device. According to the configuration of the light control device 1, the operation signal input by the operation means 2 such as a numeric keypad or a preset fader is processed in the arithmetic circuit 3, and should be realized from the light control output circuit 4 to each load. It is output as a dimming level data signal. The data signal is applied to the dimmer 5 provided individually corresponding to a plurality of lighting loads, the dimming voltage is generated, and applied to each corresponding lighting load 6. The operating means 2, the arithmetic circuit 3, and the dimming output circuit 4 are controlled by a control circuit 7, respectively.

The plurality of lighting loads 6 are divided into groups called channels,
The lighting load belonging to each channel is controlled so as to have the same dimming level in each scene. As described above, since the dimmers 5 are individually connected to the respective lighting loads 6, the dimmers 5 that should belong to the channels for each channel.
Are associated with. Generally, the correspondence between the channel and the dimmer 5 is called a patch.

In order to realize the cross fade between the scenes in the conventional light control device, the dimming level of the channel for each scene is set in advance by the preset fader or the like individually corresponding to the channels to the storage means. The stored contents are sequentially read out from the storage means, and necessary arithmetic processing is applied to the cross fade to control each dimmer, that is, the illumination load. One lighting load does not always correspond to one preset fader, that is, one channel, but a plurality of lighting loads are associated with each other on the basis of patches as described above. In this way, even if the number of preset faders is small, it is possible to perform dimming control for a larger number of lighting loads than the above number.

By the way, in recent production methods, there is a tendency that more illumination load is used, more channels are set, and fine production is performed. However, as described above, in the configuration in which the preset fader and the channel individually correspond to each other, there is a problem that the number of channels cannot be set to a large number due to the limitation of the number of preset faders in order to avoid upsizing of the device. is there. That is, it is impossible to utilize more illumination load.

In order to solve the above-mentioned problem, each scene is grouped into a plurality of sets (hereinafter referred to as "scene groups"), each patch is set for each scene group, and adjusted according to the patch status of each scene group. There is a configuration in which the light level is stored and dimming control is performed. That is, the illumination loads h1 and h2 are associated with the same channel in the A scene group, and the illumination loads h3 and h4 are associated with the B scene group.

FIG. 9 is a block diagram showing a simplified configuration of a conventional light control device 10 that switches patches according to scene groups. The configuration of the conventional light control device 10 will be briefly described below with reference to FIG.

The preset fader operating means 11 is provided with, for example, a preset number of preset faders pa and pb in two stages, and the dimming level data for each channel corresponding to the scene is set in each stage. . Each preset fader
The dimming level data set by pa and pb is given to the stage selection circuit 14 via the corresponding multiplexers 12a and 12b and the analog / digital conversion circuits 13a and 13b. The stage selection circuit 14 selects and derives one of the dimming level data set by the preset faders pa and pb in association with each selected scene group, and outputs the dimming level storage circuit. It stores in 15 according to each scene group. For example, the A scene group level indicates each light control level data of the scenes k1 to k10 forming the A scene group, and the B scene group level indicates each light control of the scenes k11 to k20 forming the B scene group. The level data is shown.

The patch information for each scene group is stored in the patch storage circuit 16
Memorized in. For example, the A scene group patch indicates the patch information on the scenes k1 to k10, and the B scene group patch indicates the patch information on the scenes k11 to k20. In the patch storage circuit 16, a counter value indicating a load number individually corresponding to each lighting load is input from a counter 17 provided in association with the patch storage circuit 16, and the patch storage circuit 16 sets each lighting load unit based on the counter value. , That is, a channel signal indicating the corresponding channel is output for each dimmer. For example, if the channel CH1 has lighting loads h1 and h2 and the channel CH2 has lighting loads h3 to h5, the counter values of 1,2,3,4,5, ...
From the patch storage circuit 16, channel signals 1, 1, 2,
It is output as 2, 2, ....

At the time of actual scene reproduction, the scene group selection circuit 18 selects a scene group to be reproduced. For example, when the A scene group is selected, the A scene group level is selected in the dimming level storage circuit 15, and the A scene group patch is selected in the patch storage circuit 16. After that, from the A scene group level based on the cross fade start instruction by cross fader operation etc.
For example, scenes k1 to k10 are sequentially read into the CA side memory buffer 19a and the CB side memory buffer 19b alternately. The memory buffers 19a and 19b store the dimming level data for one scene, and based on the channel signal provided from the patch storage circuit 16, the dimming level data are sequentially time-divided for each corresponding dimmer unit. , The first arithmetic circuit 21a or the second arithmetic circuit 2 of the crossfader arithmetic circuit 20
Give to 1b respectively.

In each of the arithmetic circuits 21a and 21b, the dimming level data input and the analog / digital data determined by the crossfader 22 are set.
Ratio la, lb given via digital conversion circuits 23a, 23b
And the data is multiplied in the adder circuit 24. The dimming level data added by the adder circuit 24 is converted into a digital / analog conversion circuit 25.
To the corresponding dimmers 26 via. In this way, each lighting load is dimming controlled.

After the reproduction of the scenes of the A scene group is completed, the B scene group is selected by the scene group selection circuit 18, and the B scene group is selected based on the B scene group level and the B scene group patch by the same operation as described above. Cross-fade between each scene is continuously executed.

With the configuration described above, it is possible to load the lighting load corresponding to each channel, that is, each preset fader, for each scene group, and thus adopt a larger lighting load. It is possible to execute detailed production.

However, since the individual correspondence between the preset fader and the channel cannot be changed, it is not possible to set the patch with the lighting load over the number of channels. That is, since the number of channels is predetermined, the number of patches that can be set for each scene group is also limited by the number of channels, and as a result, when many channels are needed, the patches can be switched for each scene group. It must be set and stored in the patch storage circuit 16. Therefore, the patch information differs for each scene group, and as a result, it is necessary to always consider which lighting load corresponds to each channel for each scene group, which is very difficult for the operator. The operation is complicated.

When the scene groups are switched, that is, when the final scene k10 of the A scene group is cross-faded to the first scene k11 of the B scene group, for example, the dimming level data of the final scene k10 stored in the memory buffer 19a on the CA side is the A scene. The first scene k derived by the channel signal based on the group patch, while being stored in the CB side memory buffer 19b.
11 is sequentially derived by a channel signal based on the B scene group patch. That is, each memory buffer 19a, 19b is based on a channel signal generated from different patch information.
Since the dimming level data is derived from the dimming level data, the dimming level data crossfaded in the crossfading arithmetic circuit 20 does not correspond to the same lighting load, and as a result, dimming by smooth crossfading is performed in any lighting load. Control may not be realized.

Therefore, the object of the present invention is not limited to the number of preset faders, and a large number of channels and lighting loads can be adopted, and the same patch can be used over the entire scene to improve operability. It is an object of the present invention to provide a light control device which is improved and can realize a smooth cross fade over the entire scene.

Means for Solving the Problems The present invention relates to a first group of dimmers, each of which is provided with a dimmer to which each lighting load corresponds individually, for each channel controlled by the same dimming level. From the dimming level storage means for setting and storing the dimming level for the second number of channels for each scene by the second number of preset faders. A plurality of dimming level holding means for selectively reading and holding the dimming level for each scene and outputting the dimming level for each dimmer according to the input first channel signal; The crossfading calculation is performed based on the dimming level from the dimming level holding means, and the calculating means for outputting to each dimmer and the correspondence between the dimmer and the channel are stored in advance, and the channels corresponding to each dimmer are stored. That outputs the second channel signal indicating A storage means, a selection means for selecting which dimming level holding means to read each scene, and a dimming level holding means provided individually corresponding to the range of channels to be used for each scene. Channel information setting means for storing the channel information shown and outputting the corresponding channel information according to the scene selected by the selecting means, and the dimming level holding means are provided individually corresponding to the channels. From the channel information from the information setting means and the second channel signal from the patch storage means, a first channel signal is generated which associates the second number of channels required for the selected scene with each preset fader. , And a channel converting means for outputting to the corresponding dimming level holding means.

Operation According to the dimmer of the present invention, the dimmers to which the respective lighting loads individually correspond are assigned in advance to each of the first number of channels, that is, one type of patch is predetermined. The dimming level for the actual dimming control is set for each scene by the second number of preset faders and stored in the dimming level storage means. The plurality of dimming level holding means selectively read and hold the dimming level of each scene from the dimming level storage means, and each of the plurality of dimming level holding means responds to a first channel signal input from a channel converting means described later. The dimming level is output for each dimmer. The dimming level output from the dimming level holding means is cross-faded by the computing means, and the dimming control of the lighting load is performed by each dimmer.

In the present invention, the patch is stored in the patch storage means, and the second channel signal indicating the corresponding channel is sequentially output for each dimmer. Further, a channel information setting unit and a channel converting unit are provided individually corresponding to the dimming level holding unit. The channel information setting means stores channel information indicating a range of channels to be used for each scene, and the channel information of the channel information corresponding to the scene to be read by the dimming level holding means corresponding to the selecting means is stored. Select one and output. In the channel converting means, the second number of channels required for the selected scene is individually set based on the selected channel information from the channel information setting means and the second channel signal from the patch storage means. A first channel signal associated with the preset fader is generated and output to the corresponding dimming level holding means. In this way, the dimming level data is sequentially output to the dimmer based on the first channel signal.

Therefore, the individual correspondences between the preset faders and the channels can be changed and set, that is to say, without being limited to the second number of preset faders, more first number channels and more It is possible to control by utilizing the lighting load of, and more precise dimming control can be realized.
Also, since the second number of channels that are actually dimming-controlled for each scene is selected from the first number of channels, it is possible to assign use / non-use for each scene to each channel. That is, it is not necessary to change the patch, and the dimming control can be performed based on the same patch over the entire scene. That is, the operator is significantly improved. Further, the dimming level data output from each dimming level holding means in the cross fade calculation between each scene is processed for each dimming level data corresponding to the same illumination load. Therefore, a smooth cross fade can be realized over each scene for each lighting load.

Embodiment FIG. 1 is a block diagram showing a simplified structure of a light control device 40 which is an embodiment of the present invention. Referring to FIG.
The configuration of the light control device 40 will be briefly described.

The preset fader operating means 41 includes, for example, a preset number (second number) of preset stages PA, PB of two stages.
Is provided, and dimming level data for each channel corresponding to a scene is set at each stage. The dimming level data set by one of the preset faders PA is given to one input of the stage selection circuit 44 via the multiplexer 42a and the analog / digital conversion circuit 43a. Similarly, the dimming level data set in the other preset fader PB is applied to the other input of the stage selection circuit 44 via the multiplexer 42b and the analog / digital conversion circuit 43b. The stage selection circuit 44 is
For example, the preset switches PA, P are composed of switching switches and the like, and are associated with each selected scene group.
One of the set dimming level data of B is selected, derived, and given to the dimming level storage circuit 45.

The dimming level storage circuit 45 divides and stores dimming level data for each scene group. For example, the A scene group level means scenes k1 to scenes that compose the A scene group.
Each of the dimming level data of k10 is shown, and the B scene group level is each dimming level data of the scenes k11 to k20 forming the B scene group.

At the time of actual scene reproduction, the scene group control switch 61c of the selection means 61 selects the scene group to be reproduced. For example, if the A scene group is selected, via the control circuit 60,
In the dimming level storage circuit 45, the A scene group level is selected. Thereafter, for example, scenes k1 to k10 are alternately read into the CA side memory buffer 46a and the CB side memory buffer 46b alternately from the A scene group level based on a cross fade start instruction by a cross fade operation or the like. The memory buffers 46a and 46b store the dimming level data for one scene, and based on the first channel signals S1a and S1b from the conversion means 56, which will be described later, the dimming is performed on a time-division basis for each corresponding dimmer unit. The level data is sequentially applied to the first arithmetic circuit 48a or the second arithmetic circuit 48b of the crossfader arithmetic circuit 47, respectively.

The cross-fader arithmetic circuit 47 is provided with a cross-fader 49 represented by a variable resistor, and the ratio la, lb determined by the cross-fader 49 is calculated via the analog / digital conversion circuits 50a, 50b. 48
given to a, 48b.

The arithmetic circuits 48a and 48b multiply the input dimming level data and the ratios la and lb, and the adder circuit 51 adds the multiplied data. The dimming level data added by the adding circuit 51 is sent to the corresponding dimmers 53 via the digital / analog converting circuit 52. In this way, each lighting load is dimming controlled.

After the reproduction of the scenes of the A scene group is completed, the B scene group is selected in the scene group selection switch 61c, and the same operation as described above is performed based on the B scene group level.
Crossfades are continuously executed between the scenes in the B scene group.

Below, the first input to each memory buffer 46a, 46b
A configuration for generating the channel signals S1a and S1b will be described.

In the present embodiment, the patch information is not limited by the number of scene groups and the preset faders, but one type is preset and stored in the patch storage circuit 54. A counter 55 is associated with the patch storage circuit 54. The counter value given from the counter 55 to the patch storage circuit 54 indicates the load number i individually corresponding to each lighting load, and the patch storage circuit 54 sets each lighting load unit, that is, the adjustment based on the counter value. The second channel signal S2 indicating the corresponding channel is output for each optical device. For example, if the channel CH1 has lighting loads h1 and h2 and the channel CH2 has lighting loads h3 to h5, the counter values of 1,2,3,4,5, ... From the patch memory circuit 54, the second channel signal S2
It is output as 1,2,2,2, .... The second channel signal is provided to the conversion means 56.

The conversion means 56 generates a first channel signal S1 from a channel buffer that stores channel information S3 that is a basis for determining the range of channels adopted for each scene group, the channel information S3, and the second channel signal S2. And a channel conversion circuit for controlling the memory buffers 46a and 46b. That is, with respect to the CA side memory buffer 46a, one channel buffer 57a and one channel conversion circuit 58a are provided.
Correspond to the CB side memory buffer 46b, and the other channel buffer 57b and the channel conversion circuit 58b correspond to each other.

FIG. 2 is a block diagram showing a concrete configuration of the converting means 56. In the following description, for the sake of convenience, only the configurations of the one channel buffer 57a and the channel conversion circuit 58a corresponding to the CA side memory buffer 46a are shown. That is, the configuration described below is the same as the configuration related to the other channel buffer 57b and the channel conversion circuit 58b, and therefore the subscripts a and b may be omitted in the reference numerals for description.

The channel 57a is the channel information setting means,
It is composed of a plurality of memories in which channel information for each scene group is stored. In the present embodiment, as an example, the scene groups to be set assume three types of A scene group to C scene group,
Each memory is composed of 62 to 64. Also, the channel information,
In the present embodiment, this corresponds to the starting channel number indicating the first channel in the range of channels utilized for each scene group. The start channel number set by the input operation means 59 is controlled by the control circuit 60 via the signal line D.
Write signals Wa to Wc for each scene group transferred from
Is written in the corresponding memories 62-64. On the other hand, when a scene group is selected by the scene group selection switch 61c during scene reproduction, one of the selection signals Sla to Slc corresponding to the selected scene group is input to the memories 62 to 64. The start channel number of the selected scene group is derived to the channel conversion circuit 58a as the channel information S3a.

In the channel conversion circuit 58, the comparison circuit 65 compares the channel information S3a from the channel buffer 57a with the second channel signal S2 from the patch storage circuit 54.

When S3a ≦ S2 (1), the comparison circuit 65 outputs a drive signal for driving the subsequent adder circuit 66. In the adder circuit 66, when the drive signal is input, the arithmetic processing according to S1a = S2-S3a + 1 (2) is executed by the channel information S3a and the second channel signal S2, and the thus-generated The one-channel signal S1a is applied to the corresponding memory buffer 46a. That is, the first channel signal S1a is the second channel signal S2 from the patch storage circuit 54 and the channel information S3a.
The first channel signal S1a, which is first output after the above, sequentially corresponds to the fader number of the preset fader PA to which the dimming level data to be output from the CA side memory buffer 46a is set. Further, the second channel signal of the channel information S3a and above indicates the range of channels actually utilized in the selected scene group. Therefore, the channels selected by the channel conversion circuit 58a for each scene group are individually associated with the preset faders.

Hereinafter, a specific example will be described with reference to FIGS. 3 and 4. The installed preset faders are 100 with fader numbers 1 to 100. For example, in the A scene group, channels CH1 to CH100 and in the B scene group, channel CH51.
~ CH150, and further, the case of adopting channels CH21 to CH120 in the C scene group is assumed.

Here, the scenes A to C are, for example, the one-act and the two-act, which are used in theatrical performances, etc., and the range of the lighting load used is different in each act. Therefore, it is assumed that the use of all the lighting loads throughout the whole curtain is not normally performed.

FIG. 3 (1) shows the range of mounted preset faders, and FIG. 3 (2) shows the channels corresponding to each scene group. Although the fader numbers 101 to 150 are not implemented, they behave as if they correspond to the channels, and are therefore regarded as so-called virtual faders. When setting the channel, the memories 62 to 64 of the channel buffer 57a store "1" as the A scene group start channel number, "51" as the B scene group start channel number, and "21" as the C scene group start channel number. Is set.

The actual dimming level of each scene is set by the 100 preset faders mounted as described above, and is held in the memory buffer 46 via the dimming level storage means 45. The input first channel signal S1 indicates the fader number of the preset fader individually corresponding to the channel selected for each scene, that is, the address of the dimming level data. Therefore, the set dimming level data is sequentially output from the memory buffer in units of dimmers selected for each scene, that is, in units of lighting loads.

That is, in the above example, for example, fader number 1
According to the dimming level data set by the preset fader, the lighting load corresponding to the channel CH1 in the A scene group (see (3) in FIG. 3) and the lighting load corresponding to the channel CH51 in the B scene group. (See FIG. 3 (4)), and the lighting load (see FIG. 3 (5)) corresponding to the channel CH21 in the C scene group is controlled. Therefore, in summary, the channel CH1 in the A scene group is 100% due to the installed preset faders.
It is possible to selectively control dimming of CH100 to CH100, channels CH51 to 150 in the B scene group, and channels CH21 to CH120 in the C scene group.

FIG. 4 is a diagram showing the relationship among the load number i, the first channel signal S1, and the second channel signal for each scene group.
The output from the counter 55 is shown in FIG.
It is shown in a clock format, and a load number i of each lighting load is associated with each clock. FIG. 4 (2) illustrates the second channel signal S2 indicating the range of channels to be selected when the scene A group is selected. From the channels CH1 corresponding to load numbers 1 and 2, Load number c + 1
~ C + 3 indicates that the corresponding channels up to the channel CH100 are selected. Below the second channel signal S2, the first channel signal S1 converted by the converting means 56, that is, the fader number of the corresponding preset fader is shown in association with each other. Similarly, Fig. 4 (2)
Shows the second channel signal S2 in the B scene group and the corresponding fader number, and C in FIG. 4 (3).
The second channel signal S2 and the corresponding fader number in the scene group are shown.

In this way, the number of channels individually corresponding to the number of preset preset channels can be changed and selected from the channel information for each scene group from the channel buffer 57 and the second channel signal S2. Therefore, it is possible to control the dimming of a larger number of channels without limiting the number of the preset faders, and further by utilizing a larger illumination load. Therefore, it is possible to realize a detailed production with each scene group. Also, since it is possible to utilize many channels without being limited by the number of the preset faders, it is not necessary to change the patches for each scene group, and as a result, the same patch is used for all scenes. Each lighting load can be controlled based on Therefore, the troublesomeness of considering which lighting load corresponds to which channel each time each scene group is switched can be eliminated, and the operability is significantly improved. Further, the dimming level data for each dimmer is output from each of the memory buffers 46a, 46b by the first channel signal S1 converted based on the same patch. As can be understood from FIG. 4, it is possible to realize smooth cross fades corresponding to the same dimmer for each lighting load and for each scene.

FIG. 5 is a block diagram showing the concrete construction of the converting means 56 in the second embodiment of the present invention. In FIG. 5, the same or corresponding parts as those in FIG. 2 are designated by the same reference numerals, and, similarly to FIG. 2, the structures of one channel buffer 57a and one channel conversion circuit 58a are shown.

In the channel buffer 57a in the second embodiment,
A fixed channel number indicating a predetermined channel number is stored together with memories 62 to 64 that store the starting channel number of each scene group as channel information. A memory 67 is provided. The fixed channel number set by the input operation means 59 is given from the control circuit 60 through the signal line D, and the memory 67 is provided by the write signal Wf regardless of each scene group.
Written in. Always select signal SL during scene playback
f is input to the memory 67, and the fixed channel number is used as the second channel information S4, the channel conversion circuit.
It is sent to 58a.

The channel conversion circuit 58a in the second embodiment is constituted by a first comparison circuit 68, a second comparison circuit 69, an addition circuit 70, and a switching switch 71. The configurations of the second comparison circuit 69 and the addition circuit 70 are the same as the channel conversion circuit of the first embodiment.
The configurations are the same as those of the comparison circuit 65 and the addition circuit 66 in 58a. However, the second channel information S4 indicating the fixed channel number is also input to the adder circuit 70. When the second comparison circuit 69 satisfies the relationship of the first expression, the drive signal is given to the adder circuit 70. The driving adder circuit 70 executes the arithmetic processing according to S5 = S2-S3a + S4 + 1 (3). The operation signal S5 thus generated is derived to one individual contact K1 of the switching circuit 71, and the second channel signal S2 is derived to the other individual contact K2 of the switching circuit 71.

Further, the second channel information S4 is compared with the second channel signal S2 in the first comparison circuit 68. As a result of the comparison, when the relationship of S4 ≦ S2 (4) is satisfied, the comparison first comparison circuit 68 controls so that the common contact K3 of the switching circuit 71 is connected to the other individual contact K2. That is, when the second channel signal S2 from the patch memory circuit 54 is less than the fixed channel number, the second channel signal S2 is directly given to the memory buffer 46a as the first channel signal S1a corresponding to the fader number. On the other hand, when the second channel signal S2 is greater than or equal to the fixed channel number, the switching circuit 71 is controlled so that the common contact K3 and one individual contact K1 are connected, and the switching of the scene group selected as described above is performed. The operation signal S5 generated based on the second channel signal S2 which is equal to or higher than the start channel number is derived as the first channel signal S1a corresponding to the subsequent fader number.

Hereinafter, a specific example will be described with reference to FIGS. 6 and 7. The installed preset faders are 100 with fader numbers 1 to 100. For example, in the A scene group, channels CH1 to CH100, and in the B scene group, channels CH1 to CH5.
0, CH101 to CH150, and channel C1 to C in the C scene group
It is assumed that H50, CH151 to CH200 are adopted.

FIG. 6 (1) shows the range of mounted preset faders, and FIG. 6 (2) shows the corresponding channels for each scene group. Also shown is the range of the virtual fader described above. Assuming the channel, the memory 62 to 64 of the channel buffer 57a stores "51" as the A scene group start channel number, "101" as the P scene group start channel number, and "151" as the C scene group start channel number. Is set, and “50” is set in the memory 67 as a fixed channel number.

In such a case, the channels CH1 to CH50 correspond to the first to 50th preset cassettes to be mounted in any of the scene groups as shown in FIGS. 6 (3) to (5). After the 51st preset fader, 50 sets of channels correspond to the start channel numbers set for each scene group.

FIG. 7 shows the relationship between the load number i, the first channel signal S1 and the second channel signal S2 for each scene group in the second embodiment. In FIG. 7, the same or corresponding parts as in FIG. 4 are designated by the same reference numerals.

That is, as can be understood from FIG. 7, the range of channels commonly used in each scene group can be set by the fixed channel number, and the start channel number of each scene group can be set individually for each scene group. The range of channels used for can be set. The channels thus set individually correspond to the preset faders.
Therefore, unlike the premise of the first embodiment, when the lighting load controlled by the common dimming level across each scene group is included in a part, a part of the preset lights is set. The same channel can be associated with each scene group, which greatly improves operability.

Note that, in the above-described embodiments, for convenience, the description has been made in relation to the configuration in which the channel is changed for each scene group.
Therefore, although the dimming level storage means 45 is shown to store the dimming level data for each scene group, the channel can be changed for each scene group. There is no need to divide into scene groups. Therefore, the memory buffer and channel information may be appropriately selected by the selecting means for each scene, and the channel conversion may be executed.

Therefore, according to the present embodiment, the dimming control can be performed by utilizing a plurality of channels and lighting loads based on the same patch without being limited by the number of preset faders to be mounted, and the cross fade can be performed. Since the channel conversion is performed corresponding to each scene to be calculated, the cross fade between the scenes can be smoothly executed.

EFFECTS OF THE INVENTION According to the present invention, the individual correspondence between the preset fader and the channel can be changed, so that it is possible to utilize more channels and even more lighting loads without being limited by the number of preset channels. It is possible to control dimming. That is, a more detailed effect can be realized.

Moreover, since the dimming control can be executed based on the same patch over all the scenes, it is not necessary to consider the patch in each scene, and the operability is significantly improved.

Further, in the cross fade between the scenes, the cross fade calculation is executed between the dimming levels corresponding to the same lighting load based on the same patch, so that the cross fade between the scenes can be smoothly executed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a simplified structure of a light control device 40 which is an embodiment of the present invention, and FIG. 2 is a block diagram showing a concrete structure of the converting means 56 of the first embodiment, and FIG. FIG. 4 is a diagram for explaining the correspondence relationship between the preset fader and the channel for each scene group in the first embodiment, and FIG. 4 is the load number i, the first channel signal for each scene group in the first embodiment. FIG. 5 shows the relationship between S1 and the second channel signal S2.
FIG. 6 is a block diagram showing the concrete construction of the converting means 56 in the second embodiment, and FIG. 6 is a diagram for explaining the correspondence between the preset fader and the channel for each scene group in the second embodiment. FIG. 7 is a diagram showing the relationship among the load number i, the first channel signal S1, and the second channel signal S2 for each scene group in the second embodiment, and FIG. 8 shows the basic configuration of the dimmer 1. A block diagram and FIG. 9 are block diagrams showing a simplified configuration of the conventional light control device 10. 40 ... Dimmer, 41 ... Preset fader operating means, 45 ...
Dimming level storage means, 46 ... Memory buffer, 47 ... Crossfader arithmetic circuit, 53 ... Dimmer, 54 ... Patch storage circuit,
55 ... Counter, 56 ... Conversion means, 57 ... Channel buffer,
58 ... Channel conversion circuit, 60 ... Control circuit, 61 ... Selection means,
S1 ... 1st channel signal, S2 ... 2nd channel signal, S3, S4
… Channel information

Claims (1)

[Claims] 1. A first number of dimmer groups, and a second number of dimmers, each dimmer corresponding to each lighting load is assigned to each channel controlled by the same dimming level. A dimming level storage means for setting and storing dimming levels for the second number of channels by a set fader, and for each scene selectively from the dimming level storage means. From a plurality of dimming level holding means for reading and holding the dimming level of, and outputting a dimming level for each dimmer according to the input first channel signal. A second channel signal indicating a channel corresponding to each dimmer by pre-storing the correspondence between the dimmer and the channel, which is calculated by cross-fading based on the dimmer level of the dimmer, and output to each dimmer. The patch storage means for sequentially outputting A selection means for selecting which dimming level holding means to read, and provided corresponding to the dimming level holding means individually, storing channel information indicating a range of channels to be used for each scene, Channel information setting means for outputting channel information corresponding to the scene selected by the selecting means, and channel information from the channel information setting means provided individually corresponding to the dimming level holding means. And a second channel signal from the patch storage means to generate a first channel signal for associating the second number of channels necessary for the selected scene with each preset fader, and the corresponding dimming level. And a channel converting means for outputting to a holding means.