JPS58161582A - Sound volume level display - Google Patents

Abstract

PURPOSE:To display clearly the control state of the sound volume level and to improve the operability of a display, by using colors different from colors of other intermediate levels for the minimum and maximum levels of sound volume when the sound volume level is displayed in colors on a screen. CONSTITUTION:The sound volume increment and decrement switches 15 and 16 are connected to an up-down counter 1 of the sound volume control part of a sound volume level display. The maximum and minimum levels of the counter 1 are detected by maximum and minimum level detecting circuits 2 and 3 respectively. These detected maximum and minimum levels are applied to AND gates 9 and 10. At the same time, the color display pattern signal supplied from a pattern generating circuit 4 is applied to gates 9 and 10. The minimum and maximum levels of sound volume are displayed at a CRT25 of a TV receiving circuit 23 with a speaker mark in red facing oppositely to the outside and a figure added with a wave pattern respectively. The intermediate level is displayed with a green pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a means for displaying a volume level in a television receiver, and an object thereof is to provide a means for displaying a volume level in an easy-to-understand manner.

There is a system that allows you to adjust the volume up or down by operating a key switch without using a variable resistor, but in this case, even if the volume level is set to the minimum level, people keep pressing the volume down key without understanding. There are many cases.

Therefore, it is an object of the present invention to provide a device that improves its operability by displaying the adjustment state of the volume level on the screen in an easy-to-understand manner.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to drawings showing one embodiment thereof. FIG. 1 shows a concrete example of the circuit. In the figure, 1
is a close-up of the volume.

Down counter, 2 is a maximum level detection circuit for volume level, 3 is a minimum level detection circuit for volume level, 4 is a circuit for generating a pattern signal for displaying the volume level as a color image on the screen, 6 is an OR gate, 6 is an AND gate, 7 is an integration circuit, 8゜9.10 is an AND gate, 11
is an inverter, 12 is a power supply voltage supply terminal, 13.14 is a pull-up resistor, 15 is a key switch for volume up control, 16 is a key switch for volume down control, 17゜2
0 is a capacitor, 18.21 is a diode, 19.22
23 is a resistor, 23 is a television receiver circuit, 24 is an image amplifying section in the television receiver circuit, 26 is a cathode ray tube (CRT) for display, 26 is a D/A converter for generating a volume control voltage, and 27 is a D/A converter for generating a volume control voltage. This is the volume control voltage output line. Further, 28 is a supply line for the horizontal periodic signal obtained from the television receiver circuit 23, and 29 is a supply line for the vertical synchronization signal obtained from the television receiver circuit 23. 30 is red (R) and green (G) from the video amplifying section 24 in the television receiver circuit 23;

This is a drive circuit for driving the CRT 25 by obtaining a blue (B) output signal. 31 is up, down counter 1
This is a clock generation circuit for driving.

The conventional volume adjustment circuit is up for volume adjustment.

It consists of a down counter, a clock generation circuit 31, key switches 16, 16 for volume up and volume down, and a D/A converter 26, and controls the volume level by outputting a volume control voltage. In this case, it takes about 6 to 10 seconds to change the volume level from the minimum level to the maximum level, so you may feel uneasy because you cannot tell whether the volume is actually changing just by listening to it. It happens often. Further, even when the volume level is at the minimum level, the key switch 16 for volume down control is often kept pressed.

Therefore, in order to improve operability in such cases, this device displays the changing state of the volume level as a color image on the screen of the CRT 25 of the television receiver. This can also be confirmed visually. First, if the up/down counter 1 for volume adjustment is a 4-bit one, the output line 32 of the up/down/counter 1 is 4 bits. The voltage is applied to the D/A converter 26, the maximum level detection circuit 2, the minimum level detection circuit 3, and the pattern generation circuit 4. The D/A converter 26 converts the count output into an analog control voltage, which is added to the volume control circuit in the television receiver circuit 23 to control the volume.

As shown in FIG. 2, the pattern generation circuit 4 is a circuit that generates a pattern signal for displaying a pattern for displaying the volume level as a color image according to the output of the up/down counter 1, A pattern signal is created based on the horizontal synchronizing signal and vertical synchronizing signal from the image receiving circuit 23, and an output signal is output to the output line 37. Second
In the figure, it is assumed that the up and down counter 10 count value reaches the maximum volume level at "10°", but the same is true even if counter 1 is used as a binary counter, and any count value is set to the maximum volume level. Then, when the volume level is "0", the speaker marks 43 facing outward are displayed in red as a display image to indicate that the volume level is the minimum. As the number of simulated sound wave figures 44 is adjusted to increase, the number of simulated sound wave figures 44 is increased by arranging them at equal intervals.

These intermediate levels are displayed in green. When the volume level reaches "1o" and reaches the maximum level, all of these are displayed in red. However, this pattern generation circuit 4
does not have red and green color control outputs, and only generates pattern signals for displaying this pattern. Switching of display colors will be explained below.

First, if the output of the up/down counter 1 is at the minimum level "o", it is sent from the minimum level detection circuit 3 to the output line 34, and the output of the up/down counter 1 is at the maximum level "10". In this case, a high level output is outputted from the maximum level detection circuit 2 to the output line 34, respectively. When either the output of the maximum level detection circuit 2 or the minimum level detection circuit 3 becomes high level, a high level output is output from the OR gate 5 to the output line 35.

Also, the reason why the volume increases is that when either the key switch 15 or 16 for down adjustment is closed, there is an output from the AND gate 6, and the AND gate 8 becomes conductive via the integrating circuit 7, and the pattern Output line 3 of generation circuit 4
The pattern signal output from 7 is applied to AND gates 9 and 1o. As mentioned above, at the maximum volume level or the minimum volume level, the output line 35 is at a high level and the AND gate 9 becomes conductive; however, the AND gate 10
is cut off, and an output signal is output to the output line 41, but an output signal is output to the output line 42. As shown in the figure, the AND gate 9
The output of is connected to CRT 25 via diode 18 and resistor 19.
is applied to the red color drive circuit. Therefore, the volume levels "o" and "1o" shown in FIG. 2, that is, the minimum and maximum volume levels are displayed in red. Further, when the volume level is other than the minimum and maximum, the output line 36 of the OR gate 6 is at a low level, so the AND gate 9 is in a cutoff state,
AND gate 1o becomes conductive, and diode 21
A signal for displaying a green drive circuit pattern of the CRT 25 is applied via the resistor 22, and the volume level is displayed in green.

FIG. 3 shows a speaker mark 43 for displaying the volume level and a simulated sound wave figure 4 on the screen of the CRT 26 of the television receiver.
An example in which 4 is displayed is shown.

As mentioned above, the output line 38 of the integrating circuit 7 outputs a high level when the key switch 16.16 for adjusting the volume up or down is closed.
Key switch for adjusting volume up or down 15.
Even if the output terminal 18 is placed in the open state after the adjustment is completed, the output remains at a high level for a certain period of time (approximately 1 to 2 seconds), and then becomes a low level. For this reason, the pattern signal output for volume level display is of course output and remains displayed when the key switch 15 or 16 for adjusting the volume up or down is operated, and also when the key switch 15 or 16 is pressed for only a short time. Even in such cases, the display pattern 7 does not disappear immediately but remains displayed for a certain period of time, and smooth volume display is possible without repeating blinking, and the display pattern 7 does not disappear immediately and remains displayed for a certain period of time (approximately 1 to 2 seconds) after no operation is performed. Afterwards, the volume level display is erased and the screen of the television receiver is no longer monopolized.As described above, according to the present invention, the adjustment status of the volume level can be displayed on the screen in an easy-to-understand manner with a simple circuit configuration. This makes it possible to improve operability, give a sense of security when adjusting the volume level up or down, and improve the usability. It should be noted that it is also possible to simplify the circuit configuration by controlling the above-mentioned processing using software using a microcomputer.

[Brief explanation of the drawing]

FIG. 1 is a specific circuit diagram of a volume level display device according to an embodiment of the present invention, FIG. 2 is a diagram of its display pattern, and FIG. 3 is a perspective view of its display state. 1...Up, down counter, 2...
・Maximum value detection circuit, 3... Minimum value detection circuit, 4
・・・・・・Pattern generation circuit, 5・・・OR・
Gate, 6,8,9°10...And gate, 7...Integrator circuit, 24...TV receiver image amplification unit, 26... ...D/A converter, 31...Clock generation circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (3)

[Claims] (1) The volume level is displayed as a color image on the screen, and the display color is different when the volume level is at the minimum level and at the maximum level, and when the volume level is at an intermediate level. Level display device. (2) As a color image for displaying the volume level, there are two speaker marks pointing outward from each other when the volume level is at the minimum level, and as the volume level increases, the simulated sound wave figures are increased outward from the speaker marks. Claim 1, characterized in that the figure is
Volume level display device as described in section. (3) The volume level is displayed while the volume level adjustment key is being operated, and the display image of the volume level is erased after being continuously displayed for a certain period of time from the end of the key operation. A volume level display device according to claim 1.