JPH04109504U - electronic volume device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability of a playback device by configuring it so that multiple functions can be operated with a single switch,
Make playback devices more compact and multifunctional. [Structure] When the operating knob of the switch element is pressed and rotated, multiple functions of the electronic volume circuit and the surround circuit are sequentially switched and updated, and the operation is released to select the desired function. By simply rotating the control knob, the playback output level of the selected function changes step by step.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention is an electronic volume control system that sets the output volume and sound quality of a sound reproduction device to a desired level. This article concerns the system and its control device.

0002

[Conventional technology]

Recently, home audio and video equipment has been equipped with electronic control methods to adjust the volume and sound quality. A conditioning device is provided. Electronic volume controls audio signals by applying digital circuits. This allows fine level adjustment, and allows you to change the level of part of the audio band frequency. The application range of electronic volume, including the sound quality adjustment circuit function that allows you to adjust the sound quality to your preference. The area is extremely wide. In general, the sound quality adjustment circuit functions installed in audio equipment include: For example, there are various control devices for treble, bass, balance, and fade.

0003 In-vehicle equipment that is equipped with such volume and sound quality adjustment functions and is also designed to be compact and multifunctional. The playback device must be equipped with a switch that can operate all of the above functions. ing. This switch cycles through modes such as volume, treble, bass, balance, etc. Next, there is the mode switch that changes and updates to select the desired function, and the Integrated up/down switch that increases/decreases the output level of the signal in stages. It is something that has been set. To operate this switch, press the mode switch repeatedly. If you press it again, the mode will be VOL-TRE-BAS-BAL-FAD-VOL The above symbols are displayed on the display. desired mode is When selected and displayed, operate the up/down switch UP to select The output level of the selected function will increase in stages, and if you operate the DN, the output level will increase in stages. attenuates.

0004 There is also a push switch to select the mode and a rotary switch to increase or decrease the output level. Electronic volume controllers that are integrated with encoders are also available. This electronic volume In the above example, press the push switch multiple times to update the mode sequentially. Same as above, but when increasing or decreasing the output level, turn the rotary encoder clockwise and Rotate counterclockwise to set the desired level.

[0005]

[Problem that the idea aims to solve]

By the way, recent sound playback devices have become even more multi-functional, with variable volume and sound quality functions. In addition, devices with surround effect functions are now available. sa An example of the round function is the DELAY function that sets the reverberation time in detail, and the HALL, STADIUM, THEATE designed for a seed-style listening room There are functions such as R, DOLBY surround function, etc., and these are It is possible to create a finely tuned reproduction sound field by selecting a sub-volume device.

[0006] However, among these many functions, the desired function can be selected by pressing the electronic volume control button. To update and select sequentially by mode switch, follow the mode sequence of functions. The push switch must be operated multiple times, making the operation extremely complicated.

[0007] This invention was devised in view of the above circumstances, and is compatible with the above rotary encoder and push button. Or use an electronic volume with an integrated pull switch to perform multiple functions. To provide an electronic volume device capable of quickly and reliably selecting a desired function from the With the goal.

[0008]

[Means to solve the problem]

In order to achieve the above purpose, the electronic volume device of the present invention adjusts the volume and sound quality. A selector switch that sequentially updates multiple circuit functions and selects the desired function. and an UP/DOWN switch that increases or decreases the output level of the selected circuit function. It is equipped with an electronic volume control that sets the volume and sound quality to the desired level using electronic control. A switch with a rotary encoder and a push or pull switch integrated. Combined operation of switch element, rotary encoder, and push or pull switch to sequentially switch and update multiple circuit functions, select the desired function, and press the corresponding rotary encoder. a control device that increases or decreases the output level of the circuit function selected by the individual operation of the controller; It is equipped with the following.

[0009]

[Effect]

When the rotary encoder section is rotated, the rotary encoder output is repeatedly patterned. Rus is sent out. Also, when the push switch is pressed, the push switch A high level voltage is sent to the output during the pressing period. rotary encoder and pusher When two switches are operated simultaneously, the controller recognizes these two switch output voltages. All functions of the playback device's electronic volume circuit and surround circuit can be configured in an array mode. Switch and update sequentially according to the code. Release the switch and select the desired function. Once selected, the next time the rotary encoder is operated independently, the control device will be selected. Change the playback output level of the selected function in stages. Rotary encoder clockwise direction The rotational operation changes the playback output level in the direction of increasing it. counterclockwise rotation In operation, the reproduction output level changes in the direction of attenuation.

0010

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows the electronic volume of this invention. 1 shows a perspective view of the external appearance of a switch element used in a system device. Switch element 10 The main body is an operating member for operating an electronic volume device, and includes a rotary encoder section 1. 2 and the push switch section 14 are integrally constructed, and an operating switch is provided at the tip of the shaft 18. A knob 16 is provided. Rotary encoder section 12 and push switch section 14 has a plurality of lead wires 12a and 14a inserted into the printed circuit board, respectively. It has been derived. The switch element 10 configured in this way has a cylindrical knob 1 By rotating 6 clockwise and counterclockwise, the rotary encoder section 12 It can be operated by pushing the knob 16 toward the side of the main body. The switch section 14 is to be operated. Then, the switch element 10 is self-contained. It has a return function, and when the knob 16 is released, the knob 16 returns to its initial position. do. Note that the switch 14 is turned on when the knob 16 is pulled toward you. A type of pull switch may also be used.

[0011] FIG. 2 is a block diagram showing a state in which the above-mentioned switch element 10 is connected to an electronic volume device. This is a diagram. In the figure, 20 functions as an electronic volume control device. 22 is a memory section consisting of ROM and RAM, 24 is a switch operation A display circuit displays operation data, and 26 is a display device.

0012 Next, 30 is an audio signal system input of the playback device controlled by the electronic volume device. A terminal 32 controls the phase or delay time of the input audio signal to generate sound effects. Surround circuit, 34 is an electronic button that freely sets the volume level and frequency characteristics of the signal. 36 is an output terminal for a controlled audio signal. surround The circuit 32 has a plurality of surround constants and surround modes, and is controlled by the microcomputer 20. Generates various sound effects depending on the control. Surround constants are DELAY-1, DEL It has N constants of AY-2, DELAY-3, ...DELAY-N, and Surround modes are HALL and STAD, which are designed for various types of listening rooms. Each mode such as IUM, THEATER, and DOLBY-PRO-LOGIC These constants and each mode can be switched sequentially by operating the switch element 10. and select the desired function. Next, the electronic volume circuit 34 sets the volume. VOLUME, FADER, BALANCE functions and TRE to adjust sound quality There are BLE and BASS functions, and each of these functions is sequentially controlled by the switch element 10. At the same time as the switching is selected, the signal level is set for the selected function.

[0013] Next, the operation of the present invention will be explained. The rotary encoder section 12 shown in FIG. The push switch section 14 is represented by switches S1 and S2, respectively, in FIG. and those leads 12a and 14a are connected to the respective contacts of switches S1 and S2. It is shown in a closed state. Now, turn the operation knob 16 clockwise, that is, to the +UP side. When the switch is rotated, the movable contact S1a of switch S1, which is a rotary encoder, changes to S1. The movable contact S1a moves to the S1c side when it is rotated counterclockwise to the -DN side. Fall down. Then, when the knob 16 is released, the movable contact S1a falls to the S1c side. It remains as it is. In addition, when the operation knob 16 is pressed, it is a push switch. Contacts S2a and S2b of S2 contact and conduct, and when the pressure is released, they automatically become non-conductive. Restore yourself. The power supply voltage VDD is supplied to the contacts S1a and S2a, and the engine When coder S1 is rotated, the outputs of contacts S1b and S1c are repeatedly When the push switch S2 is operated, the terminal S2b is pressed during the pressing period. Outputs high level step voltage. In addition, the repetition output to contacts S1b and S1c The return pulses have a phase difference of 90° from each other.

[0014] Now, rotate the operation knob 16 to the +UP side, that is, clockwise (CW). Then, a repetitive pulse (a) shown in FIG. 3 is sent to the microcomputer 20. operation knob 16 in the -DN direction, that is, counterclockwise (CCW), the microcomputer 20 shows repetitive pulses (with a phase difference of 90° from each other based on the waveform of (a)) b) is sent. Pulse (b) is different from (a) when rotating clockwise (CW). When rotating in the counterclockwise direction (CCW), the phase is delayed by 90°, and when the rotation is counterclockwise (CCW), the phase is advanced by 90°. Also , the output pulse may be in the form shown in FIG. 4, and in this case clockwise operation (CW) (b) There is no output, and in counterclockwise operation (CCW) (a) the output becomes zero. stop Therefore, the frequency of these repetitive pulses depends on the operating angle of rotary encoder S1. If the angle to be changed and rotated is small, the pulse period will be long and the operating angle will be The larger the deviation, the shorter the repetition period.

[0015] If you operate rotary encoder section S1 and push switch section S2 at the same time, As a result of inputting two pulses (a) or (b) and (c) to icon 20, First, selection command data is sent from the microcomputer 20 to the electronic volume circuit 34. Ru. During the operation period of the switch element 10, the electronic volume circuit 34 includes All functions are updated sequentially according to the VOL-FAD-BAL-BAS-TRE arrangement. At the same time, the above codes are sequentially displayed on the display 26. Then the surround Data is sent to channel 32, and following TRE, each surround function is transmitted to DEL. AY1-DELAY2-DELAY3-DELAY4-DELAY5-DEL Updated in the order of Y6-HALL-STADIUM-THEATER-DOLBY The code is also displayed on the display 26. V again when the last function update is completed. Switching starts from OL, and this switching operation lasts until the end during the operation period of the switch element 10. You can continue to reply.

[0016] Also, if you press the operation knob 16 and operate it to the -DN side, the arrangement will be reversed to the above. Switching takes place in sequence. The rotation angle of rotary encoder section S1 is (a) (b) It corresponds to the frequency of the output pulse, so if the rotation angle is greatly deviated, the update switching speed will be increased. By increasing the speed and making a small deviation, function selection can be easily performed at a gentle speed. like this If the desired function is obtained during the switching, operate switches S1 and S2. Cancel the function selection. The selected function is the function of the electronic volume circuit 34. If there is, next set the output level. To set the level, simply rotate knob 16. All you have to do is create it. For example, if the selected function is VOL, the + The output level changes from -∞ to 0dB by UP operation, so in 1dB steps. It is possible to increase the volume with the -DN operation, and decrease the volume in the opposite direction with the -DN operation. I can do that. Also, if the rotation angle of the knob 16 is greatly deviated, it will be proportional to the angle of operation. It is possible to increase the speed of volume change by rotating the button, and by rotating it slowly, the speed of the volume change can be increased. You can reliably change the volume in 1dB steps. At this time, the volume is displayed. The output level value is also displayed on the display 26 in the same manner. Note that the selected function When in BAS or TRE, output level is from -15dB to +15dB Changes in 1dB steps.

[0017] In this way, the electronic volume device of the present invention has a rotary encoder section and a push button. By operating the switch sections at the same time, you can select the desired function from among the many functions. You can make quick selections and operate only the rotary encoder section independently. This allows you to change the output level of the selected function.

[0018]

[Effect of the idea]

As explained above, according to the electronic volume device of the present invention, the rotary A switch in which a encoder and a push switch are integrated, and the rotary encoder and push or pull switches to update multiple functions sequentially to achieve the desired result. Select a function and output the selected function by operating the rotary encoder independently. Equipped with a control device to increase or decrease the level, it is equipped with a rotary encoder and a push or The electronic volume circuit and surround sound can be controlled by operating the pull switch in conjunction with the Quickly select the desired function from each function of the circuit and increase or decrease its playback output level. be able to.

[0019] Therefore, the present invention is based on the rotary encoder section and the push or pull switch section. The playback device can be easily configured by adding a single switch element and a control circuit. Each function can be operated quickly and reliably, greatly improving the operability of the playback device. This will greatly contribute to making playback devices more compact and multifunctional.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a switch element in which a rotary encoder section and a push switch section of the present invention are integrated.

FIG. 2 is a block diagram showing the electronic volume device of the present invention.

FIG. 3 is a timing chart diagram showing switch element output waveforms.

FIG. 4 is a timing chart diagram showing another aspect of the switch element output waveform.

[Explanation of symbols]

10 Switch element 12, S1 rotary encoder section 14, S2 push switch section 16 Operation knob 20 Microcomputer (control device) 26 Display 30 Signal system input terminal of playback device 32 Surround circuit 34 Electronic volume circuit 36 Signal system output terminal of playback device

Claims (1)

[Scope of utility model registration request] [Claim 1] A changeover switch that sequentially updates multiple circuit functions for adjusting volume and sound quality and selects a desired function, and an UP that increases or decreases the output level of the selected circuit function.
/DOWN switch, and sets the volume and sound quality to a desired level by electronic control,
A switch element has a rotary encoder and a push or pull switch integrated, and the rotary encoder and push or pull switch are operated together to sequentially switch and update multiple circuit functions to select a desired function, and the rotary encoder An electronic volume device comprising: a control device that increases or decreases the output level of the selected circuit function by an independent operation of the electronic volume control device.