KR0159040B1 - Amp apparatus of audio - Google Patents

Abstract

The present invention relates to an acoustic apparatus, which time-division a sound source signal applied to the final amplifier stage of the acoustic apparatus, listens to a CD (Compact Disk), plays a tape through a deck, receives a broadcast through a tuner, and Functions such as watching movies through the VCR deck can be performed independently so that multiple users can simultaneously listen to and listen to each desired function from one audio device.

According to the present invention, a main amplifier of an audio device is assigned to a plurality of users, and then, according to a selection signal applied from a plurality of users, a sound source signal applied from each playback device is sampled at a predetermined frequency period assigned to each preamplifier. Time-divided and amplified the sampled sound source signal into a predetermined time slot, and then restored to the original sound source signal through inverse modulation, and outputs to each user independently. You can appreciate it.

Description

Amplifier device of sound equipment

1 is a block diagram illustrating an amplifier in a conventional acoustic apparatus.

2 is a block diagram illustrating an amplifier for implementing multitasking in an acoustic device according to the present invention.

3 is a configuration diagram of an embodiment of multitasking to which the amplifier of the present invention shown in FIG. 2 is applied.

* Explanation of symbols for main parts of the drawings

10: input signal detector 20: preamplifier

21: Bypass and Pro Logic 22: Electron Volume

23: gain amplifier 24: main volume

25: tone control unit 26: balance adjustment unit

30,50: main amplifier 31: amplifier

40: selection signal detector 51: multiplexer

52: amplifier 53: demultiplexer

54: detector 60: user remote control

70: light receiver A-D: user room

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device, and in particular, by time-dividing a sound source signal applied to the final amplifier stage of the audio device, listening to a compact disk (CD), playing a tape through a deck, receiving a broadcast through a tuner, and The present invention relates to an amplifier device for an audio device, which enables a user to independently listen to and listen to each function desired by a plurality of users so that functions such as watching a movie through a VCR deck can be independently performed.

As shown in FIG. 1 of the accompanying drawings, the final amplification stage of the conventional acoustic apparatus includes an input signal detector for detecting a sound source signal and an image signal applied from a predetermined playback apparatus or a frequency receiver according to a user's selection. 10 and bypass and pro logic for outputting to a sound source for surround processing or outputting to a stereo sound source or a mono sound source according to a mode set at the time of recording in the composite sound source signal applied through the input signal detector 10. 21, the electronic volume 22 which automatically adjusts the output level of the center signal C and the surround signal S, which are separated and applied to the sound source of the surround processing, and the signal applied by adjusting the volume of the output level. A gain amplifier 23 for amplifying to a predetermined predetermined level, a main volume 24 for adjusting the level of sound output to the speaker according to the user's selection, and a speaker SPK A preamplifier 20 comprising a tone adjusting unit 25 for adjusting the height of the output sound, a balance adjusting unit 26 for adjusting the balance of the front, rear, left and right of the output sound, and a pre The main amplifier 30 is configured to amplify the sound source signal processed and applied from the amplifier 20 to a predetermined predetermined level and output the same through the speaker SPK.

Referring to the operation of the reproduction of the sound source, the reception of a broadcast frequency, or the reproduction of a video signal in the conventional sound device configured as described above are as follows.

After the user applies power to the audio device and selects the desired audio playback device, broadcast frequency receiver, or video playback device, the sound source signal from the selected device (e.g. CDP, deck, tuner, VCR, etc.) It is applied to the bypass and pro logic 21 of the preamplifier 20 through the input signal detector 10. Bypass and Pro Logic 21 analyzes the signal applied as a composite signal of Left and Right, and performs Pro Logic if it is a surround sound source containing sound field effects. ), The center (Central), surround (S), and then extracts the center (C) and surround (S) signal to a predetermined level set by the electronic volume (22) and then amplify the gain of the surround (left) L) and the light (R) signal are applied to the main volume 24 side. If the mono signal has no sound field effect, the applied sound source signal is bypassed and applied to the main volume 24 side. do. The main volume 24 adjusts the applied sound source signal to the output level set by the user, and then applies the shutter signal C and the surround signal S to the amplifiers AMP3 and AMP4 of the main amplifier 30, respectively. The left signal L and the right signal R are controlled by adjusting the height and balance of the sound source output through the tone control unit 25 and the balance control unit 26 so that the amplifiers AMP1 and AMP2 of the main amplifier 30 are adjusted. It is applied to each side. Each of the amplifiers AMP1, AMP2, AMP3, and AMP4 of the main amplifier 30 amplifies the output level of the applied sound source signal to a predetermined level according to a set value and outputs the same to the user through the speaker SPK.

As described above, in the conventional acoustic apparatus, the main amplifier must have amplification means for amplifying each sound source signal applied from the preamplifier, thereby increasing the spatial occupancy rate, and it is difficult to design in a limited space. There was a problem in that the peripheral parts are damaged by the heat generated by the amplification means.

In addition, since the signal controlled by the main amplifier is processed as an analog signal, there is a problem that noise occurs in the sound output by the influence of the surrounding signal, and the sound source output through the reproduction or reception is limited to one playback device or the reception device. There is a problem that a plurality of users cannot perform multitasking such as listening to a desired sound or watching an image through a single audio device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to convert a sound source signal of each channel reproduced and received through a preamplifier into a discrete signal, and sample the signal at a predetermined frequency through a multiplexer. Each user who wants to perform time division, reproduce the sound source signal of each time-divided channel through one main amplifier and restore it through the de-multiplexer to play and receive frequencies of different devices in one audio device. By providing the desired sound or frequency reception and video, it is possible to perform multi-tasking with one audio device.

In order to achieve the above object, a feature of the present invention is a preamplifier for performing overall processing for output of a reproduction sound source signal or broadcast frequency signal applied from a playback device such as a CDP, VCR, tape deck, and a frequency receiver such as a tuner. And a main amplifier for amplifying a sound source signal applied from the preamplifier to a predetermined level, comprising: sound source output means provided in a plurality of user rooms and connected to an output port of the sound apparatus; A user remote controller, which is assigned to a user of the apparatus, for remotely controlling the sound device, light receiving means for detecting a remote control signal output from the user remote control, and a selection signal applied through the light receiving means to detect the playback device or frequency. The sound source signal from the device is sent to the preamplifier of the user who has chosen to use the audio device. A selection signal detecting means to be applied, a multiplexer sampling the sound source signal applied from the preamplifier at a predetermined frequency band and time-dividing it into a predetermined time slot, and amplifying the time-divided applied sound source signal to a predetermined level. And a demultiplexer for inversely modulating the amplified sound source signal and restoring the original signal, and filtering a frequency component of a predetermined band from the analog signal restored and applied to the original sound source signal to block noise components. Provided is an amplifier device for an acoustic apparatus, comprising: a detection means.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of an amplifier for implementing multitasking in an acoustic device according to the present invention, and FIG. 3 is a block diagram of an embodiment of multitasking using the amplifier of the present invention shown in FIG.

As can be seen in FIG. 2, the present invention includes a preamplifier 20, a selection signal detector 40, a multiplexer 51, an amplifier 52, a demultiplexer 53, and a detector 54. The main amplifier 50, the user remote control 60, and the light receiving unit 70, the preamplifier 20 is a surround (L, R, Bypass and Pro Logic 21 to process C, S, stereo (L, R, C) and mono (L, R) sound sources, and surround (C, S) sound sources The electronic volume 22, the main volume 24 for adjusting the output level of the sound source signal applied to the level selected by the user, the tone control unit 25 for adjusting the height of the output sound source signal, and the output sound source signal It is a general preamplifier consisting of a balance adjusting section 26 for adjusting the balance of the sound equipment. It is provided to correspond to each of the user room to implement. The user remote controller 60 is assigned to each user in a multi-tasking audio device and outputs a radio signal for selecting a reproduction or frequency reception of a desired device of the audio device in its own room. The light receiving unit 70 is provided in each user room and receives a radio selection signal applied from the user remote controller 60 and applies the signal to the selection signal detection unit 40. The selection signal detecting unit 40 detects and analyzes a selection signal applied from each user to pre-amplify a sound source signal applied from a playback device or a frequency receiving device of an acoustic device to a user who applies the selection signal in his / her room. 20) to the side. The multiplexer 51 of the main amplifier 50 samples a sound source signal applied from a predetermined preamplifier 20 that processes a sound source signal applied from a playback device or a frequency receiver selected by each user at a predetermined frequency. After that, time division is performed for a predetermined time slot. The amplifier 52 amplifies the sound source signal that is time-divided from the multiplexer 51 to a predetermined level. The demultiplexer 53 inversely modulates the time-divided sound source signal that is amplified and applied to a predetermined level to restore the original sound source signal. The detector 54 removes noise of the output sound source by performing filtering on a predetermined band from an analog signal applied to the original sound source signal.

Referring to the operation of the present invention having a function as described above are as follows.

As can be seen in FIG. 3 of the accompanying drawings, a compact disc player (CDP) for reproducing sound source information or image information recorded on a compact disc (CD), and a tape for reproducing sound source information recorded on a magnetic tape (Magnetic Tape) Multi-tasking connection of one audio device output port which is composed of tech, tutor to receive and tune broadcasting frequencies, and VCR to play video and audio information. When the device to which the sound source is to be reproduced or received is selected by using 60, the wireless selection signal output from the user remote controller 60 is detected by the light receiving units 70 installed in the respective rooms. As can be seen from the selection signal detector 40 is applied. The selection signal detecting unit 40 detects and analyzes a signal applied from the light receiving unit 70 and applies the sound source information applied from the playback apparatus to the preamplifier 20 selected by a user. Bypass and Pro Logic 21 analyzes a signal applied as a composite signal of a left and a right from a reproducing apparatus or a frequency receiving apparatus as shown in FIG. If the surround sound source is recorded, it is extracted with raft (L), light (R), chapter (C), and surround (S) by performing prologic logic, and the center (C) signal and surround (S) signal are extracted from the electronic volume (22). After amplifying the signal to a predetermined level, amplify the gain of the surround and apply it to the main volume 24 along with the raft (L) and light (R) signals. Buy sound source signal 'S to be applied to the side of the main volume (24). The main volume 24 adjusts the applied sound source signal to the output level set by the user, and then the left signal L and the light signal R are controlled by the tone controller 25 and the balance controller 26. The height and balance of the sound source to be output at the level of the state is set is applied to the main amplifier 30 side. As shown in FIG. 2, the multiplexer 51 of the main amplifier 50 carries out a predetermined process by applying a sound source signal to which a predetermined process is performed from a preamplifier 20 provided to an arbitrary user. After sampling, the signal is time-divided into a predetermined time slot and applied to the amplifier 52 side. The amplifier 52 amplifies the time-divided sound source signal to a predetermined predetermined level and applies it to the demultiplexer 53. The demultiplexer 53 inversely modulates the time-divided sound source signal to be amplified and applied to the original sound source signal. After demodulation, the signal is applied to the detector 54 side. The detector 54 filters the applied analog sound source signal to a predetermined band to remove noise components, and then selects the speakers L, R, C, and S of the rooms A to D where the user who selected the playback or frequency reception is located. Output through

For example, when a user located in room A selects a VCR device for reproducing an image from an audio device using his user remote controller 60, the selection signal detector 40 is applied from the VCR device according to the detected selection signal. The audio signal is applied to the preamplifier 20 side assigned to the A room. The preamplifier 20 allocated to the room A performs a general operation such as separation to the surround sound source, adjustment of the pitch of the sound, balance adjustment, and output level adjustment of the sound source to the applied audio signal, and then the multiplexer of the main amplifier 50. When applied to the (51) side, the multiplexer 51 performs sampling at the set frequency with respect to the applied sound source signal, time division into a predetermined time slot, and applies to the amplifier 52 side. When the amplifier 52 amplifies the time-divided sound source signal to a predetermined predetermined level and applies it to the demultiplexer 53, the demultiplexer 53 inversely modulates the time-divided sound source signal and restores the original sound source signal. After filtering the predetermined band through the detector 54, the VCR of the sound recording apparatus is displayed to the user of the selected room A through the image output means.

At this time, the user in room B selects the CD playback of the sound apparatus using his user remote controller 60, and the user in room C selects a channel for any broadcasting station using his user remote controller 60. When the user of room D applies a signal for selecting a tape deck, the selection signal detector 40 detects a signal applied from the light receiver 70 of each room, and selects an executive signal applied from a playback device selected by the user of each room. It applies to the preamplifier 20 assigned to each room. The preamplifier 20 allocated to each room performs a general operation such as separation to the surround sound source, adjustment of the height of the sound, balance adjustment, and output level adjustment of the sound source signal to the applied sound source signal, and then the multiplexer of the main amplifier 50. When applied to the (51) side, the multiplexer 51 samples the applied signal with a frequency period of a predetermined band set for each preamplifier 20, time division into a predetermined time slot, and applies it to the amplifier 52 side. . The amplifier 52 amplifies to a predetermined level set for each sound source signal that is time-divided and applied, inversely modulates it through the demultiplexer 53, restores the original sound source signal, and applies it to the detector 54 side. 54 is a speaker (L, R, C, S) installed in each user room (A, B, C, D) after removing noise components by filtering a predetermined band for each applied analog sound source signal Alternatively, the video output means outputs the sound source recorded on the CD, the sound source recorded on the tape, the received broadcast channel, and the VCR image.

As described above, according to the present invention, a main amplifier of an acoustic device is assigned to a plurality of users, and then a sound source signal applied from each playback apparatus is allocated to each preamplifier according to a selection signal applied from the plurality of users. Sampling at a predetermined frequency period, time-divided and amplified the sampled sound source signal into a predetermined time slot, and then restored to the original sound source signal through inverse modulation and output to each user independently, so that a plurality of users through one audio device Since the independent sound source and the image is viewed, multitasking of the sound device provides efficiency in the use of the sound device.

Claims (2)

A preamplifier for performing overall processing for output of a reproduction sound source signal or a broadcast frequency signal applied from a playback device such as a CDP, a VCR, a take deck, and a frequency receiver such as a tuner, and a sound source signal applied from the preamplifier. A sound device having a main amplifier for amplifying at a level of a sound source, comprising: sound source output means provided in a plurality of user rooms and connected to an output port of the sound device, and assigned to the plurality of users for remote control of the sound device; A user who applies a selection signal to a user remote controller, a light receiving means for detecting a remote control signal output from the user remote control, a selection signal applied through the light receiving means, and a signal applied from the reproducing apparatus or a frequency receiving apparatus A selection signal detecting means applied to the preamplifier side and a sound applied from the preamplifier A multiplexer for time-dividing the original signal into a predetermined time slot after sampling the original signal, amplifying means for amplifying the time-divided and applied sound source signal to a predetermined level, and inversely modulating the amplified sound source signal. And a demultiplexer for restoring an original signal, and a detector for filtering out a frequency component of a predetermined band from an analog signal restored and applied to the original sound source signal to block noise components. Device. The amplifier device of claim 1, wherein the preamplifier is provided corresponding to each user of the acoustic device implemented by multitasking.