JPH04267294A - Volume controller position display device - Google Patents

Abstract

PURPOSE:To facilitate the visual check of a volume controller position as well as to improve the extent of operability by displaying the control position of a rotary type ganged volume controllers in an on-screen manner as in an up- down type electronic volume controller. CONSTITUTION:This display unit is provided with one volume controller made up by adding a DC voltage between one fixed end and another end of one volume controller out of plural volume controllers and making it so as to take an output voltage out of a movable end, and an analog-to-digital converter 8 which converts the output voltage out of the one volume controller into a digital signal. In addition, it is composed of installing a controlling microcomputer 9, converting the digital signal out of this A/D converter 8 into a level display signal and an on-screen display signal, and a level display part 10, being displayed by the level display signal out of the controlling microcomputer 9, plus an on-screen display part 15 being displayed by the on-screen display signal, respectively.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume adjustment position display device that displays the adjustment position of a rotary interlocking volume on a level display or on-screen and also allows the volume adjustment position to be preset.

0002

[Prior Art] Conventionally, not only the above-mentioned rotary interlocking volume but also mechanical volume has not had an on-screen display as is done with up/down electronic volume, and has not had a preset function. Common.

0003

[Problems to be Solved by the Invention] Therefore, the adjustment position of the volume is determined by visually checking the rotational position of the volume knob. The present invention provides an on-screen display or level display of the volume adjustment position similar to that of an up-down electronic volume, and also allows one-touch setting of the familiar volume for each sound source (compact disc, laser disc, etc.). An object of the present invention is to provide a volume adjustment position display device.

0004

[Means for Solving the Problems] The present invention provides a rotary interlocking volume that includes a plurality of volumes and rotates the plurality of volumes in conjunction with each other manually or electrically. One volume that applies a DC voltage between one fixed end and the other end of the volume and extracts an output voltage from the movable end, and an A/D converter that converts the output voltage from the one volume into a digital signal. , a control microcomputer that converts the digital signal from the A/D converter into a level display signal and an on-screen display signal, and a level display section and on-screen display signal that display the level display signal from the control microcomputer. an on-screen display unit that displays a preset volume position as preset position data, a memory unit that stores a plurality of position data as preset position data, and outputs either a clockwise drive signal or a counterclockwise drive signal based on the volume drive operation. At the same time, when a preset volume position selection operation is performed, the preset position data is read from the memory section and the direction of rotation of the volume is determined from the preset position data and the signal from the A/D converter to be clockwise or counterclockwise. the control microcomputer that outputs either a clockwise drive signal or a counterclockwise drive signal after determining whether the current position is the same or the current position; and the rotary interlocking volume is rotated based on the control signal from the control microcomputer. The present invention provides a volume adjustment position display device configured with a volume drive control section that performs drive control.

[0005]

[Operation] One of the linked volumes is used for position confirmation. Then, the voltage that changes as the volume rotates is converted into a digital signal, and further converted into a level display signal and an on-screen display signal to display the position. Furthermore, by storing several types of digital signals as presets, one-touch setting of volume, etc. is possible.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A volume adjustment position display device according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of essential parts showing an embodiment of a volume adjustment position display device according to the present invention, which is assumed to be a volume adjustment block. In the figure, 1
is a rotary interlocking (triple) type volume that is composed of VR1, VR2, and VR3, and can rotate VR1 to VR3 in conjunction with each other either manually or electrically (motor).
is the DC voltage input terminal of VR1, 3 is the output terminal of VR1,
4 is an analog audio signal (hereinafter referred to as audio signal) input terminal of VR2, 5 is an output terminal of VR2, 6 is an audio signal input terminal of VR3, 7 is an output terminal of VR3, 8 is an A/D converter, 9 is an Control microcomputer, 10 is level display section, 1
1 is an operation signal input terminal based on a volume position setting operation; 12 is a memory unit that stores a plurality of position data using a preset volume position as preset position data;
Reference numeral 13 denotes a volume drive control unit for controlling the rotary interlocking volume 1 based on a control signal from a microcomputer;
Reference numeral 5 denotes an on-screen display section including a character generator (hereinafter referred to as character generator), a switch circuit 21, a red output circuit 22, a green output circuit 23, a blue output circuit 24, and the like.

Next, the display will be explained. A DC voltage is output to the output terminal 3 of VR1 according to the change in VR1. A is to divide this output voltage into certain ranges and convert the voltages in each range into digital signals (so-called quantization).
/D converter 8. Therefore, if the number of bits is increased, the volume position will be subdivided and the variation in perceptual sensation will be reduced when the same display is performed, but if the number of bits is too small, the variation in perceptual sensation will become large, so the quantization should be determined appropriately. Further, the same type of change characteristics (A curve, B curve, etc.) of VR1 to VR3 are used in order to match the display and auditory sense. The signal quantized by the A/D converter 8 is converted by the control microcomputer 9 into signals necessary for level display and on-screen display, and is supplied to the level display section 10 and the on-screen display section 15 for display. The on-screen display is similar to that implemented in color television receivers and the like. In other words, the signal from the control microcomputer 9 is used in the character generator and switch circuit 21 to determine and synchronize the display position with the horizontal and vertical synchronization input signals (terminals 16 and 17), and the video signal at that position (input from the terminal 18). is switched to a character or mark signal from the character generator (switch circuit), and the video signal in which the on-screen display signal is synthesized is output to the red output circuit 22 and displayed on-screen (on the CRT). In this embodiment, the display color is red, but it is also possible to use green, blue, or a composite color. The video input and output of the color generator and switch circuit 21 may be made to correspond to the required color.

Next, the volume preset function will be explained. The aim of this function is to reset the volume change to the desired volume with a single touch when changing the sound source such as a compact disc (CD) or laser disc (LD). Set the volume preset to your desired volume in advance and adjust the A/D at this time.
It stores the output data (preset position data) of the converter 8, and stores it as several types of volume modes (for example, volume mode 1, volume mode 2, etc.). When, for example, "volume mode 1" is selected during normal operation after presetting, an operation signal corresponding to the volume mode 1 is input to the input terminal 11 of the control microcomputer 9, and the corresponding preset position data is read out from the memory section 12. On the other hand, since the data representing the volume position immediately before the selection operation is input from the A/D converter 8, the control microcomputer 9 compares it with the preset position data. Based on the comparison result, the control microcomputer 9 generates data for driving (rotating) the volume clockwise [
For example, one of three types is selected: an output of (10)], an output of data that drives (rotates) counterclockwise (for example, (01)), and no data output (that is, no drive). Now, if we start driving in the above volume mode 1, the voltage at output terminal 3 of VR1 will also change, so A
The signal from the /D converter 8 also changes. The control microcomputer 9 continues to compare the preset position data with the data from the A/D converter 8 and outputs the drive data until both data are the same (14), and stops outputting when both data are the same. and stop driving. However, no driving is required (preset position data and A/D converter 8
(matches the previous data), hold the current state. Next, FIG. 2 will be explained. FIG. 2 is a flowchart for explaining the operation of the control microcomputer 9 when a preset volume mode is selected. now,
Select one of the preset volume modes (S
T1) Then, the control microcomputer 9 compares the preset position data read out from the memory section 12 and the data from the A/D converter 8, and determines whether the two are different data (S
T2), if NO (both are the same), hold the current state (stopped) (ST3), if YES (both are different), determine whether the drive direction is clockwise (ST4), if YES, move clockwise. Data for driving is output (ST5), and if NO, data for driving counterclockwise is output (ST6).
). After starting the drive in ST5 or ST6, the drive continues until it is determined that the data is the same in ST2, and when the data becomes the same, the S
The determination at T2 is NO, the output is stopped (ST3), and the drive is stopped.

[0009]

[Effects of the Invention] As explained above, according to the present invention, the adjustment position of the rotary interlocking type volume is displayed on-screen like in an up-down type electronic volume, making it easy to visually confirm the volume adjustment position. At the same time, the volume adjustment position can be preset, which improves the operability of the device, and has a great advantage.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of essential parts showing an embodiment of a volume adjustment position display device according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the control microcomputer 9. FIG.

[Explanation of symbols]

1 Rotary interlocking (triple) type volume 2 Input terminal 3 Output terminal 4 Audio signal input terminal 5 Output terminal 6 Audio signal input terminal 7 Output terminal 8 A/D converter 9 Control microcomputer 10 Level display unit 11 Operation signal input terminal 12 Memory section 13 Volume drive control section 15 On-screen display section 16 Horizontal synchronization signal input terminal 17 Vertical synchronization signal input terminal 18 Red video signal input terminal 19 Green video signal input terminal 20 Blue video signal input terminal 21 Character generator and switch circuit 22
Red output circuit 23 Green output circuit 24 Blue output circuit

Claims (2)

[Claims] Claim 1: In a rotary interlocking volume consisting of a plurality of volumes and in which the plurality of volumes are rotated in conjunction with each other manually or electrically, one fixed end of one of the plurality of volumes and the other The one volume to which a DC voltage is applied between the ends and the output voltage is taken out from the movable end, the A/D converter to convert the output voltage from the one volume into a digital signal, and the A/D converter. a control microcomputer that converts the digital signal into a level display signal and an on-screen display signal, a level display section that displays according to the level display signal from the control microcomputer, and an on-screen display section that displays according to the on-screen display signal. A volume adjustment position display device comprising: 2. A memory unit that stores a plurality of position data using a preset volume position as preset position data; When a volume position selection operation is performed, the preset position data is read out from the memory section, and based on the preset position data and the signal from the A/D converter, it is determined whether the rotation direction of the volume is clockwise or counterclockwise, or the current position. the control microcomputer that determines whether the drive signal is the same and outputs either a clockwise drive signal or a counterclockwise drive signal; and a volume that controls the rotary interlocking volume to rotate based on the control signal from the control microcomputer. The volume adjustment position display device according to claim 1, comprising a drive control section.