JPH0119179Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a graphic equalizer display device that displays a frequency characteristic diagram.

[Prior Art] Conventional graphic equalizer display devices generally display a plurality of slide volumes provided for each divided frequency band to set equalizer characteristics, and the frequency characteristics set by the slide volumes. It is composed of a display device using display elements such as a plurality of LEDs for display purposes.

In the graphic equalizer display device described above, a desired equalizer characteristic is first set by operating each slide volume, and a predetermined display element of the display device blinks according to the equalizer characteristic, thereby displaying a frequency characteristic diagram on the display device. is displayed. After setting the audio signal is input,
By passing through this preset equalizer section, the display element of the display element blinks in accordance with the passing characteristics, allowing the equalizer characteristics to be recognized.

[Problems to be Solved by the Invention] The conventional graphic equalizer display device is configured as described above, and the corresponding slide volume must be operated for each frequency band. In addition, the slide volume for setting the equalizer characteristics and the display device for displaying the equalizer characteristics diagram are each mounted on the front panel separately, so when setting the equalizer characteristics, it is necessary to check the display device each time the slide volume is operated. The settings are complicated.

[Means for solving the problem] The present invention was developed in view of the above-mentioned problems, and its means are to connect multiple signal lines horizontally and vertically for sensing static electricity, induced hum, etc. a mesh-like matrix arranged in a horizontal direction corresponding to a frequency and a vertical direction corresponding to a signal level, a position detecting device for determining the position where a signal such as static electricity or induced hum is applied to the matrix, and the position detecting device. a storage device for storing positional information obtained by the device; and a display device comprising a liquid crystal, a light emitting diode, a plasma display, etc. for sequentially inputting the positional information from the position detecting device and displaying the locus of the signal application position to the matrix. It consists of

[Operation] In the above means, the equalizer characteristic diagram is displayed by the display device based on the locus of the signal application position, and the equalizer circuit is displayed based on the frequency and signal level position information corresponding to the equalizer characteristic diagram stored in the storage device. Set the equalizer characteristics of

[Embodiments of the invention] Examples of the invention will be described below with reference to the drawings. In FIG. 1, reference numeral 2 denotes a matrix, which is constructed by arranging a plurality of signal lines in the vertical direction (X direction) and vertical direction (Y direction) for sensing static electricity, static electricity, etc. Of these directions, the X direction corresponds to the frequency, and the Y direction corresponds to the signal level. The position detection device 1 for determining the position by adding a signal to the matrix 2 is constructed as follows.

X where the frequency data of matrix 2 is input
A multiplexer 3 is connected to the signal line 2a in the Y direction, and a multiplexer 6 is connected to the signal line 2b in the Y direction to which the signal level is input. Multiplexer 6 connects signal line 2 in the X direction
The output section of the multiplexer 3 is sequentially switched (swept) according to the X-direction address from the microprocessor 10. Further, the multiplexer 6 selects one of the signal lines 2b in the Y direction, and the output section of the multiplexer 6 is sequentially switched in accordance with the Y direction address from the microprocessor 10.

The multiplexer 3 has a signal line 2 in the X direction.
A detector 4 and a latch circuit 5 are connected to detect a frequency-related signal such as static electricity or induced hum applied to a. Also connected to the multiplexer 6 are a detector 7 and a latch circuit 8 for detecting signals related to signal levels such as static electricity and induced hum applied to the signal line 2b in the Y direction.

As shown in FIG. 2, the microprocessor 10 includes registers 10a and 10b that temporarily store signals from the latch circuits 5 and 8, a control unit (CPU) 10c having an arithmetic function, and a storage device 10d.
ROM10 where instructions (programs) are built
e, and input/output (I/O) 10f, 10g.

FIG. 3 is a flowchart showing the operation of this microprocessor 10, in which the control device 10c outputs an X-direction address to the multiplexer 3 via the input/output 10f, sweeps the multiplexer 3, and then outputs the address via the input/output 10g. outputs the Y-direction address to the multiplexer 6, and sweeps the multiplexer 6.

Then, the registers 10a and 10b are input to the output control device 10c of the latch circuits 5 and 8, and the presence or absence of the X direction and Y direction latch signals is detected.
The signal application position to matrix 2 is calculated based on the directional address. This calculation result is stored in storage device 1.
The stored contents are output from 0d to the liquid crystal driver 11a of the liquid crystal display device 11 via the output terminal 10h, and when a drive signal (address signal) is sent from the liquid crystal driver 11a to the display liquid crystal 11b, the control is resumed. The X-direction address is output from the device 10c to the multiplexer 3.

The aforementioned matrix 2 is provided on the display surface side of the display liquid crystal 11b, and when a signal is applied to the matrix 2, the position where this signal is applied is displayed.

Note that P in FIG. 1 is a light pen that applies static electricity or other alternating current signals to the matrix 2.

Next, the operation of the above embodiment will be explained.

In order to obtain the desired equalizer characteristics, the equalizer characteristic diagram is traced on the matrix 2 using the light pen P. This causes static electricity (or other alternating current signals) to be applied to the signal lines 2a, 2b. At this time, the multiplexers 3 and 6 are being swept by the X and Y direction address outputs from the control device 10c. And multiplexer 3, 6
When the output part of the light pen P reaches the position corresponding to the point where the signal is applied, the signal is inputted to the detectors 4 and 7 through the multiplexers 3 and 6, and the detection signal is output from the detectors 4 and 7. The signals are input to registers 10a and 10b through latch circuits 5 and 8. The control device 10c has registers 10a and 10b.
The signal is read from and the output of the X and Y direction addresses is temporarily stopped. Then, based on the X and Y direction addresses at this time, the position on the matrix 2 traced by the light pen P is calculated and stored in the storage device 10d. Then, the control device 10 again
The multiplexers 3 and 6 are swept by the X and Y direction address output from c, and the above operation is repeated. By tracing the light pen P on the matrix 2, a desired equalizer characteristic diagram is drawn, and the matrix 2 in the equalizer characteristic diagram is drawn.
The positions of the signal levels (Y direction) relative to the upper frequencies (X direction) are sequentially stored in the storage device 10c.

On the other hand, from the storage device 10d, the stored contents, that is, the position information regarding the equalizer characteristic diagram on the matrix 2 traced by the light pen P, are sequentially output to the liquid crystal driver 11a, and thereby the light pen P is displayed on the display liquid crystal 11b. The equalizer characteristic diagram, which is a locus, is displayed. Also, the storage device 10d
The resistance value of each volume in the equalizer circuit is varied based on the position information stored in , and the equalizer circuit is set to an equalizer characteristic corresponding to the desired equalizer characteristic diagram.

In the above embodiment, a case was shown in which static electricity and other alternating current signals were applied to the matrix 2 using the light pen P, but instead of the light pen P, a human finger may be used to generate induced hum, and A micro switch may be provided at each intersection in the Y direction to turn it on and off, and the information may be applied to the matrix 2.

Further, although the display liquid crystal 11b is used, a plasma display may be used instead, or a display made of light emitting components such as an LED array may be used.

[Effects of the invention] As described above, according to the invention, a desired equalizer characteristic diagram can be easily drawn using a human finger, a simple light pen, etc., and the device can be configured to be thin.

Furthermore, not only can a desired equalizer characteristic diagram be drawn on the matrix, but also the equalizer circuit of the equalizer circuit can be drawn as drawn on the display device using the frequency and signal level position information corresponding to the equalizer characteristic diagram stored in the storage device. Characteristics can be set. Therefore, since the equalizer characteristics can be set within the display device, the operability in setting the characteristics is improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a block diagram of the microprocessor shown in FIG. 1, and FIG. 3 is a flowchart illustrating the operation of the microprocessor. 1...Position detection device, 2...Matrix,
3, 6... multiplexer, 4, 7... detector,
5, 8...Latch circuit, 10...Microprocessor, 10d...Storage device, 11...Display device.

Claims (1)

[Scope of utility model registration request] A mesh-like matrix in which multiple signal lines for sensing static electricity, induced hum, etc. are arranged horizontally and vertically, and the horizontal direction corresponds to the frequency and the vertical direction corresponds to the signal level, and the matrix has static electricity, A position detection device for determining the position to which a signal such as an induced hum is applied, a storage device for storing the position information obtained by the position detection device, and a signal application to the matrix by sequentially inputting the position information from the position detection device. It is comprised of a display device consisting of a liquid crystal display, a light emitting diode, a plasma display, etc. that displays a locus of the position, and displays an equalizer characteristic diagram based on the locus of the signal application position, and also displays an equalizer characteristic diagram corresponding to the equalizer characteristic diagram stored in the storage device. A graphic equalizer display device characterized in that equalizer characteristics of an equalizer circuit are set based on frequency and signal level position information.