JPH0554978A - Memory-equipped dimming device - Google Patents

Abstract

PURPOSE:To synthesize dimming signals from a plurality of dimming operation consoles on the real time basis. CONSTITUTION:A dimming signal A from No.1 dimming operation console is given via a line 23 to a synchronization sensing circuit 32, comparator circuit 33, and changeover circuit 34, while dimming signal B from No.2 dimming operation console is given to an accommodation area 31 via another line 24. In this accommodation area 31, dimming levels for a plurality of illumination loads following the start code for the dimming signal B are stored one by one. The synchronization sensing circuit 32 senses the start code for dimming signal A and reads the dimming level for each illumination load. The comparator circuit 33 compares the dimming levels for the two A, B, controls the changeover circuit 34, and leads out the greater level as a synthesized signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for dimming control of a stage or a hall, and more particularly to a device for controlling the same lighting load by using a plurality of dimming consoles.

[0002]

2. Description of the Related Art Conventionally, a light control device has been used to control the brightness of a lighting load such as a stage or a hall to perform a lighting effect. In the recent lighting effects, users are demanding various effects. As one of such demands, there is a demand to produce using a plurality of light control consoles. This is because, even if it is simply considered, it is clear that a complicated effect can be achieved by using two dimming consoles, as compared with the case of controlling by one dimming console. Further, even in a place where the lighting load is large, even if a dimming console having few functions such as the number of level setting devices and the storage capacity for automatic performance is used, a complicated effect can be achieved. However, when using multiple dimming consoles, it is necessary to combine multiple dimming signals. That is, as shown in FIG. 6, when the dimming signal A via line 1 and the dimming signal B via line 2 are to be combined,
It is conceivable that the comparison circuit 3 performs comparison, and for example, the larger signal is derived as a combined signal.
In this case, the output of the comparison circuit 3 controls the changeover switch 5 via the line 4 to switch the common contact 6 to either the individual contact 7 or the individual contact 8. The dimming signal A or the dimming signal B thus switched is derived from the line 9 as a combined signal.

From the dimming console, signals representing dimming levels for a plurality of lighting loads are derived in time series in a predetermined order. As shown in FIG. 7, the dimming signals A and B derived from a plurality of dimming consoles are not synchronized in data transmission timing, and a shift W1 occurs. That is,
The dimming signals A and B are dimming levels Dim1 and Dim for each lighting load with reference to a predetermined start code.
2, ..., Dim 511, and Dim 512 are sent, and signals below the start code are repeated again.

In order to solve the problem caused by the shift W1 in FIG. 7, the configuration in FIG. 8 can be considered. The dimming signals A and B via the lines 1 and 2 are temporarily stored in the data storage means 11 and 12, and the data corresponding to the same illumination load are combined by the combining processing circuit 13 and derived from the line 9 as a combined signal. It is a configuration that does. However, as shown in FIG.
In order to take in the data of the dimming signals A and B into the respective data storage means 11 and 12, a data taking time shown by WA and WB is required, and a delay for the output synthesizing process shown by W2 occurs, and eventually one The output of W3 is delayed after the start code is received. As described above, in the configuration of FIG. 8, there is a problem that the dimming signal combined in real time cannot be obtained.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to obtain a composite signal in real time with no time delay, using one of the signals from a plurality of dimming consoles as a reference. It is to provide a memory dimming device that can perform.

[0006]

According to the present invention, a plurality of lighting loads and a signal representing a first dimming level for dimming control of each lighting load are derived for each lighting load in a predetermined order. One or a plurality of second dimming operations for deriving a signal representing a second dimming level for dimming control of each lighting load in the predetermined order for each lighting load. Means and memory means provided for each second dimming operation means for sequentially storing signals from each second dimming operation means,
In response to the signal from the first dimming operation means, the stored contents of the corresponding memory means are read for each lighting load, and the dimming level selected from the first dimming level and the second dimming level according to a predetermined condition. Means for driving each lighting load according to the light level.

[0007]

According to the present invention, the first and second dimming operation means illuminate the signals representing the first and second dimming levels for dimming the plurality of lighting loads in a predetermined order. Derive for each load. The signals from the second dimming operation means are sequentially stored in the memory means. In response to the signal from the first dimming operation means, the stored contents of the corresponding memory means are read out for each lighting load and selected from the first dimming level and the second dimming level according to a predetermined condition. Each lighting load is driven according to the dimming level. In this way, since the dimming level is selected for each lighting load corresponding to the signal from the first dimming operation means, the signals from the plurality of dimming operation means can be combined in real time.

[0008]

1 is a block diagram showing the basic construction of an embodiment of the present invention. It is assumed that two dimming operation consoles A21 and B22 are used as the dimming operation means. The dimming signal A from the dimming operator console A21 is led to the line 23. The dimming signal B from the dimming operator console B22 is led to the line 24. These lines 23,
24 is connected to the input of the output synthesizer 25. The output combiner 25 derives a combined signal from the dimming signal A and the dimming signal B according to a predetermined condition from the line 26. The line 26 is connected to the unit 27. The unit 27 includes a plurality of lighting loads. The combined signal includes a signal indicating the dimming level for each lighting load in a time division manner. The signals for each lighting load are arranged in a predetermined order, and the unit 27 is driven for each lighting load at the dimming level represented by the signal.

FIG. 2 is a block diagram showing an electrical configuration of the output synthesizer 25 shown in FIG. The dimming signal B representing the second dimming level from the dimming console B which is the second dimming operation means is given through the line 24 and is sequentially stored in the storage area 31 which is the memory means. .. The dimming signal A representing the first dimming level from the dimming console A, which is the first dimming operation means, is given through the line 23, and the synchronization detection circuit 32 detects the signal for synchronizing. It After this signal is detected, the stored contents are sequentially read from the storage area 31 and compared by the comparison circuit 33, and the combined signal is supplied from the switching circuit 34 to the line 26 according to the comparison result.
Be derived to.

FIG. 3 shows the structure of the dimming signal A and the dimming signal B. The dimming signal is a signal Dim1, which represents a dimming level for each lighting load, following a predetermined start code.
Dim2, ..., Dim512 continue, and the signal below the start code is repeated again. Signal D representing each dimming level
Im1, Dim2, ..., Dim512 are 8-bit digital data, and are transmitted as serial data bit by bit from the most significant bit to the least significant bit. The start code is data having a predetermined bit pattern, and can be easily detected as a sync signal by the sync detection circuit 32 shown in FIG. In the unit 27 shown in FIG. 1, each lighting load is supplied with signals Dim1 and Dim.
2, ..., Drive at the dimming level represented by Dim512.

FIG. 4 is a diagram for explaining the operation of the storage area 31 and the synchronization detection circuit 32 shown in FIG. The storage area 31 detects the start code of the dimming signal B and outputs the signals Dim1, Dim2, ..., Dim5 representing the dimming level.
Store 12 sequentially. The synchronization detection circuit 32 detects the start code of the dimming signal A and supplies a signal indicating the synchronization detection to the storage area 31. From the storage area 31, in synchronization with the dimming signal A, the signals Dim1, D representing the dimming level are displayed.
Im2, ..., Dim512 give to the comparison circuit 33.

FIG. 5 is a diagram for explaining the operation of comparison circuit 33 and switching circuit 34 shown in FIG. The data of the dimming signal A and the dimming signal B are serially supplied to the comparison circuit 33 bit by bit from the most significant bit to the least significant bit. The comparison circuit 33 compares the data bit by bit and compares the data from the two dimming signals A and B until a difference occurs. In FIG. 5, since the data of the dimming signal B becomes larger in the fourth bit, it is judged that the dimming signal B is larger without comparing the following bits. The switching circuit 34 may derive either the dimming signal A or the dimming signal B up to the third bit, and is switched so as to derive the data of the dimming signal B from the fourth bit as a composite signal. For example, the larger data can be selected to combine the signals.

As described above, the output synthesizer 2 shown in FIG.
Reference numeral 5 detects the start code of the dimming signal A, derives this start code as a composite signal, and signals Dim1, Dim2, ..., Dim5 representing dimming levels for each lighting load.
With respect to 12, the signal representing the larger dimming level can be selected and derived in real time with respect to the dimming signal A. The unit 27 shown in FIG.
Even if a plurality of dimming operation consoles A and B are used, the combined signal from 5 can drive the illumination load without causing the problem of data transfer timing deviation.

In the above embodiment, the comparison circuit 33
Selects the dimming data representing the larger dimming level, but it goes without saying that other conditions such as data representing the smaller dimming level may be selected. Although the dimming signal is serially transmitted bit by bit as a digital signal, it goes without saying that it may be derived as an analog signal corresponding to the dimming level and stored in the storage area 31 as analog data. ..

Further, although one dimming console B is used as the second dimming operating means, it goes without saying that a plurality of dimming consoles B may be used. By providing the storage area 31 corresponding to the plurality of dimming signals B, the dimming from any one dimming console can be performed with reference to the timing of the dimming signal A, as in the above-described embodiment. Each lighting load can be dimming-controlled according to the level.

[0016]

As described above, according to the present invention, for each lighting load corresponding to the signal derived from the first dimming operation means,
It is possible to select a signal from the first or second dimming operation means and perform dimming control in real time. Therefore, in order to enhance the effect of lighting, when a plurality of dimming operation means are used to perform dimming control for the same lighting load, any dimming control means is used as the first dimming control means. It is possible to select and select the signal for each lighting load at the same timing as the transmission timing of the signal from the dimming control means, and perform the dimming control for a plurality of lighting loads. Therefore, real-time signal switching without time delay is possible,
Effective lighting production is possible even for lighting loads that require high-speed brightness conversion.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of an embodiment of the present invention.

2 is a block diagram showing an electrical configuration of an output synthesizer 25 shown in FIG.

FIG. 3 is a diagram showing a configuration of light control signals A and B from light control consoles A and B shown in FIG. 1.

FIG. 4 is a storage area 31 and a synchronization detection circuit 3 shown in FIG.
It is a figure for explaining operation of No. 2.

5 is a diagram for explaining operations of a comparison circuit 33 and a switching circuit 34 shown in FIG.

FIG. 6 is a block diagram showing a conventional configuration for switching a dimming signal.

FIG. 7: Light control signals A and B from a plurality of light control consoles A and B
FIG. 6 is a diagram showing a timing shift of FIG.

8 is a block diagram showing a configuration example for eliminating the timing shift shown in FIG.

FIG. 9 is a diagram for explaining a shift that occurs in the configuration shown in FIG.

[Explanation of symbols]

 21 and 22 Dimming console 25 Output synthesizer 27 Unit 31 Storage area 32 Sync detection circuit 33 Comparison circuit 34 Switching circuit

Claims (1)

[Claims] 1. A plurality of lighting loads, and a signal representing a first dimming level for dimming control of each lighting load is derived for each lighting load in a predetermined order.
Dimmer operating means, and one or a plurality of second dimming operating means for deriving a signal representing a second dimming level for dimming control of each lighting load in the predetermined order for each lighting load. , A memory means which is provided for each second dimming operation means and sequentially stores signals from each second dimming operation means, and for each lighting load in response to a signal from the first dimming operation means , A means for driving each lighting load according to a dimming level selected from a first dimming level and a second dimming level according to a predetermined condition by reading the stored contents of the corresponding memory means. Memory dimming device.