JPH0794977A - Display control device - Google Patents

Abstract

PURPOSE:To provide an excellent display control device capable of automatically executing proper input sensitivity adjustment in accordance with a display state without requiring complicated operation. CONSTITUTION:This display control device is provided with a data generating means 4 for detecting plural different frequency levels of a supplied input signal in accordance with an input sensitivity control signal A and generating spectrum data for respective frequency levels and a control means 5 for generating display signals to be supplied to a display means in accordance with the spectrum data and determining the control signal A in accordance with the display state of the display means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device for controlling a display signal supplied to display means.

[0002]

2. Description of the Related Art Audio equipment having a display portion such as an equalizer with a spectrum analyzer function is widely known. Such a device is provided with adjusting means for adjusting the input sensitivity.

In FIG. 3, reference numeral 7 is a display block of an equalizer with a spectrum analyzer function. When an attempt is made to display the conventional spectrum analyzer, the procedure of the processing is to acquire spectrum analyzer data, process level data for each frequency, and perform spectrum analyzer display in the display block 7. That is, a plurality of frequencies of different input signals (f1 to f7)
0% to 10 depending on the level indicated by the spectrum analyzer data
Display in 11 steps up to 0%. If all are off, 0%, and if all are on, 100%.

When an attempt is made to change the input level of the spectrum analyzer, the input sensitivity can be switched by operating the spectrum analyzer sensitivity switching key which is an adjusting means.
There are some patterns for switching the input sensitivity. Figure 4
FIG. 6 is a diagram showing an example of a switching pattern of input sensitivity. When the display is in full scale like 7a in Fig. 4,
When the spectrum analyzer sensitivity switching key is operated so as to reduce the input sensitivity, the spectrum analyzer display becomes 7c. When the input level is small and the spectrum analyzer display does not appear well, as in 7b, the spectrum analyzer display becomes 7c when the spectrum analyzer sensitivity switching key is operated to increase the input sensitivity.

As described above, in the conventional equalizer with a spectrum analyzer function, the spectrum analyzer display can be controlled by operating the adjusting means for adjusting the input sensitivity.

[0006]

However, in the above-described conventional input sensitivity switching method, it is necessary to operate the adjusting means for each display that is currently appearing to select an appropriate input sensitivity, and the operation is complicated. There was a problem of becoming.

Further, there is a problem that even if the spectrum analyzer display function is provided, the function is not fully utilized in the full-scale display, or conversely, when the display is barely displayed.

The present invention solves such a conventional technical problem, and is an excellent display capable of automatically adjusting an appropriate input sensitivity according to a display state without a complicated operation. An object is to provide a control device.

[0009]

In order to achieve the above object, the present invention detects the level of a supplied input signal at a plurality of different frequencies in accordance with an input sensitivity control signal to obtain spectrum data at each frequency. And a control means for generating a display signal to be supplied to the display means in accordance with the spectrum data and for determining the input sensitivity control signal in accordance with the display state of the display means. And

[0010]

Therefore, according to the present invention, an appropriate input sensitivity can be automatically adjusted according to the display state without a complicated operation.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of an equalizer having a spectrum analyzer function. In FIG. 1, 1 is an EQ block that performs processing such as gain boost / cut, and 2 is an electronic VO that performs processing such as volume, balance, and fader.
An L (volume) block, 3 is a MUTE block for performing mute processing, 4 is a spectrum analyzer data acquisition block which is a data generating means for detecting spectrum analyzer data and switching sensitivity of the data input, and 5 is for controlling each block. A microcomputer block which is a control means for performing the operation, a key block 6 for fetching the key data, and a display block 7 for displaying the EQ and the spectrum analyzer. In addition,
The structure of the display block 7 is similar to that shown in FIG.

The microcomputer block 7 gives an input sensitivity control signal A for determining the input sensitivity to the spectrum analyzer data fetching block 4 to adjust the sensitivity of the detection level when generating spectrum analyzer data from the input signal. To do.

Next, the operation of the equalizer with the spectrum analyzer function shown in FIG. 1 will be described with reference to the microcomputer block 5 shown in FIG.
The operation will be described with reference to the operation flowchart.

First, the key block 6 "SENSE A
It is determined whether or not the UTO "key 6a has been pressed, that is, whether sensitivity switching is to be performed automatically or manually (step S1). If not pressed, the manually set input is performed as in the conventional example. Perform spectrum analyzer processing with sensitivity (step S2) "SENSE AUTO" key 6
When a is pressed, the display state of the display block 7 is checked to determine whether the display level is 90% or higher (step S3).

If the display level is 90% or more, the timer is started (step S4), and it is determined whether or not 3 seconds have elapsed (step S5). If not, from step S3 to step S5. Repeat the process. When 3 seconds have elapsed in step S5, the timer is reset (step S6) and the input sensitivity is lowered (step S7).

The display level is 90% in step S3.
If less than, reset the timer (step S
8) It is determined whether the display level is 10% or less (step S9). If it is not 10% or less, the process proceeds to step S1, and if it is 10% or more, the timer is started (step S10). Then, it is determined whether or not 15 seconds have passed (step S11), and if not passed, the processes from step S9 to step S11 are repeated. When 15 seconds have elapsed, the timer is reset (step S12) and the input sensitivity is increased (step S13).

As described above, the microcomputer block 5 determines the display state of the display block 7 and automatically controls the input sensitivity to the spectrum analyzer data acquisition block 4. It should be noted that the reason why the setting of the timer for 90% or more is as short as 3 seconds is that the level of display saturation is completely unknown and it is better to lower the level when the display is saturated even for a short time. On the other hand, when the input signal is a recording medium such as a CD, for example, when the input signal is a recording medium such as a CD, the setting of the timer for 10% or less is long (when the input signal is zero level). This is to prevent erroneous determination as "case").

[0019]

As is apparent from the above embodiments, the present invention detects the level of a supplied input signal at a plurality of different frequencies and generates spectrum data at each frequency in a display control device. By determining the input sensitivity according to the display state, it is possible to automatically adjust the appropriate input sensitivity according to the display state without complicated operations.

[Brief description of drawings]

FIG. 1 is a block diagram of an equalizer with a spectrum analyzer function, which is an embodiment of a display control device of the present invention.

2 is an operation flowchart of a microcomputer block in FIG.

FIG. 3 is a diagram showing a display block of an equalizer with a spectrum analyzer function.

FIG. 4 is a diagram showing an example of a conventional input sensitivity switching pattern.

[Explanation of symbols]

 1 EQ block 2 Electronic volume block 3 MUTE block 4 Spectrumr data acquisition block (data generation means) 5 Microcomputer block (control means) 6 Key block 7 Display block (display means)

Claims (1)

[Claims] 1. A data generating means for detecting levels of a supplied input signal at a plurality of different frequencies according to an input sensitivity control signal and generating spectrum data at each frequency, and displaying according to the spectrum data. Control means for generating a display signal to be supplied to the means and determining the input sensitivity control signal according to the display state of the display means.