JPS5837099Y2 - Input level display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that displays an input signal level using a plurality of level display elements.

In this type of display device, input signals are guided to comparators each having a different discrimination level, and depending on the level discrimination of each comparator, the same number of display elements (LEDs are generally used) arranged in a rod shape as the comparators are connected from one end to the other. Some devices are designed to be driven in response to a signal.

In this conventional device, the number of comparators required is equal to the number of comparators LEI), making it very expensive in terms of cost and lacking functionality in visually appealing the spread of sound.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an input level display device that eliminates the drawbacks of the prior art described above, reduces cost, and at the same time improves the visual effect of the display element.

In the present invention, 2n+1 level display elements are linearly arranged, and a pair of display elements are driven by the same comparator (n) at a point of symmetry with the central level display element as the center of symmetry.

FIG. 1 is a circuit diagram of one embodiment of the present invention.

In the figure, level display elements 1 to 4 and 6 to 10 are arranged linearly, and the display element 6 in the center is grounded via a resistor 5 as the center of symmetry.

The display elements on both sides of the display element 6, that is, the pairs of display elements 4, 7.3, 8.2, 9, and 1 and 10, which are points of symmetry, are connected in series to form four comparators 14, 13, respectively.
, 12°11.

This comparator group 15 is for determining the input signal level from the terminal S, and each comparator 11 j2, 13 .
For example, the discrimination levels of 14 are +3dB, OdB, 5dB,
10dB is selected.

Therefore, when a certain input is input to the comparator group 15, the output of each comparator turns on when the input exceeds the specified value, and as shown in FIG. Lights up toward the center.

The center display element 6 is the level reference point (output zero)
It is always on to indicate that the power is on, and usually also serves as an operation indicator to indicate that the set is powered on.

As described above in detail, the present invention not only reduces the cost by reducing the number of comparators, but also has the effect of visually improving the spread of sound, making it extremely convenient for practical use.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of a human power level display device according to the present invention, and FIG. 2 is a front view showing an example of the arrangement of the display elements of FIG. 1. 1-4.6-10...Level display element, 11-
14... Comparator, S... Input signal terminal.

Claims (1)

[Scope of utility model registration request] In a level display device in which a human signal is guided to a plurality of comparators having different discrimination levels and a plurality of level display elements are driven by level discrimination of each comparator, 2n+1 level display elements are linearly arranged, and An input level display device characterized in that a pair of level display elements located on a point of symmetry with a central level display element as a center of symmetry are driven by the same comparator.