JPS5914237B2 - Automatic dimming control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic dimming control device that dims lighting in synchronization with sound.

In general stage lighting, the lighting effect is performed manually by an operator from a light control room 5, etc., but if this lighting effect can be synchronized with the sound, the lighting can be performed automatically.

The present invention has been made in view of this point, and its purpose is to synchronize sound and lighting and automatically adjust the light based on ten preset contents to enhance the performance effect.

The present invention will be explained in detail below with reference to Examples.

1 to 3 show an embodiment of the present invention, in which 5 is an acoustic lighting setting section, which outputs acoustic signals 51 and 15 and an illumination change start signal 52 for changing the illumination in response to the acoustic signals 51. The information is stored on a magnetic tape 6. T denotes a signal reading section, which is composed of a reading head 8 and reads the acoustic signal 51 and illumination change start signal 5220 from the acoustic and illumination setting section 5. Reference numeral 11 denotes an audio output unit, which is comprised of an amplifier 9 and a speaker 10 that amplifies and outputs the read audio signal 51.

Reference numeral 1 denotes a cross-fade time setting section, which is formed by a memo 25-2 in which cross-fade time data corresponding to each illumination change can be set in advance, and is configured by a counter 4 for counting the read illumination change start signal 52. The output data is switched by the switch switching unit 3.

Reference numeral 12 denotes a cross fader section, which is controlled by a pulse generating section 13 which is composed of a rate multiplier and generates pulses according to the output of the cross fade time setting section 130, the output of the pulse generating section 13, and the output of the forward/reverse switching section 17. It is formed of a motor, a driving section 16, and a motor 15 driven by the motor, driving section 16 and interlocked with the cross fader 14, and arbitrarily changes the cross fade time read out from the cross fade time setting section 1.

Reference numeral 18 denotes a scene data specifying section which sequentially crossfades and changes the illumination data of a plurality of preset scenes based on the illumination change start signal S2 and the output from the crossfader section 12.

19 in the figure is a clock generation circuit. Note that the illumination change start signal S2 in the magnetic tape 6 only needs to be a start signal for cross-fade from one scene to the next scene. When the illumination change start signal S2 is read by the reading head 8, the counter 4 counts up by one, and the counter 4 outputs an output of 1 (in Fig. 2, it is a 4-bit output, so an output of 0001). . Then, by setting the following digital value in memory 2VC, the contents of address 1 of memory 2 are output. A digital value corresponding to the first cross time is set at address 1 of memory 2, and rate multiplier 1
3 outputs a pulse with a frequency corresponding to this digital value.

This pulse operates a motor (pulse motor) 15 to move the cross fader 14 which is interlocked with the motor 15 for cross fading. That is, since pulses with different frequencies are generated depending on the value set in the memory 2, the speed of the motor 15 is different, and the crossfade time for scene change can be freely set. Crossfader 14 is 0% (
or 100%), limit switch 2
0 is activated, and the motor 15 is stopped by the limit signal. Then, until the next illumination change start signal S2 in the magnetic tape 6 is read by the reading head 8, the cross fader 14 does not move and the light of a certain scene is held. Then, when the next illumination change start signal S2 is read, the crossfader 14 moves at a time according to the contents of the next address (address 2) in the memory 2, and a crossfade between the current scene and the next scene is applied. The same operation is repeated below. Note that the least significant bit of the counter 4 sequentially inverts the output of the motor forward/reverse switching section 17, which is constituted by a shift flip-flop, and serves as a forward/reverse rotation signal for the motor 15. Next, the scene data specifying section 18 is configured as shown in FIG. 3, and decodes the output from the counter 4 with a decoder circuit 21 to sequentially turn on and control the stage selection buttons of each preset stage. be.

Now, when the output of the counter 4 is 1 (addressing address 1 of the memory 2 of the crossfade time setting section 1), the output 1 of the decoder circuit 21 is selected and the presets of the 1st and 2nd stages are selected. A row is selected and each crossfader A
、． Connected to B. That is, the illumination data of the first stage of the preset stage appears on the A side, and the illumination data of the second stage of the preset stage appears on the B side. Assuming that the initial position of the cross fader 14 is 100% on the A side and O% on the B side, when the output of the counter 4 is 1, a cross is applied between the first and second preset stages, and the A side becomes O%, The B side becomes 100%. Next, when the output of the counter 4 is 2, the stage selection button of the preset stage remains unchanged, and the first stage and the second stage remain selected. When the output of the counter 4 reaches 3, the second and third preset stages are selected.
The second stage goes from 100% to O%, and the third stage goes from 0% to 100 (!
) is crossed. Similarly, if a selection is made, a cross is made and the scene is executed. In this embodiment, since the output of counter 4 is 4 bits, only 15 preset stages can be selected (memory 2 also has 4 bits).
Since the output of counter 4 is 4 bits, it can only address up to number 15), but if you want to increase it further, just increase the output of counter 4. In addition, as another embodiment, it may be combined with memory dimming in which illumination data is stored and retrieved in order by the output signal of the counter 4. As described above, the present invention includes an acoustic illumination setting section that stores an acoustic signal and an illumination change start signal that changes the illumination in response to the acoustic signal, and amplifies the acoustic signal read out from the acoustic illumination setting section. Crossfade time setting that can set in advance the sound output section to output and the crossfade time data corresponding to each lighting change, and sequentially outputs the crossfade time data based on the lighting change start signal read from the sound and lighting setting section. a crossfade section that changes the crossfade time according to the crossfade time data read out from the crossfade time setting section; and a crossfader section that changes the crossfade time according to the crossfade time data read out from the crossfade time setting section; The crossfade time data corresponding to illumination changes between each scene is set in advance in the crossfade time setting part, and the lighting data of each scene is preset in the scene data designation part. Set the
Based on the illumination change start signal read out from the acoustic lighting setting section, both data are read out and the lighting is controlled to a predetermined crossfade time and a predetermined level. It is only necessary to store the change start signal in correspondence with the sound signal, and there is no need to store crossfade time data and lighting data for each scene in correspondence with the sound signal, so the configuration of the sound and lighting setting section is simple. In addition to eliminating the need for a complex data processing circuit, it also makes it easy to change (record, erase) the illumination change start signal.

In addition, since the crossfade time data and lighting data for each scene are set independently without corresponding to the audio signal, the lighting data and crossfade time data for multiple scenes can be easily set, and can be set instantly. Reading (random access) is possible,
There is a young fruit that can handle early (instantaneous) cross-fade.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram of one embodiment of the automatic light adjustment control device of the present invention, FIG. 2 is a specific circuit diagram of the same, and FIG. 3 is a circuit diagram of the scene data specifying section of the same.

Claims (1)

[Claims] 1. an acoustic lighting setting section that stores an acoustic signal and an illumination change start signal that changes the lighting in response to the acoustic signal; an audio output section that amplifies and outputs the acoustic signal read from the acoustic lighting setting section; A crossfade time setting section that can set crossfade time data corresponding to each lighting change in advance and sequentially outputs the crossfade time data based on a lighting change start signal read from the acoustic lighting setting section; A crossfader section that changes the crossfade time according to the crossfade time data read from the setting section, and a crossfade section that sequentially crossfades preset lighting data of a plurality of scenes based on a lighting change start signal and an output from the crossfader section. An automatic light control device consisting of a scene data specifying section that changes the light according to the scene data.