KR970002844B1 - Vcr with musical scale keys - Google Patents

Abstract

Disclosed is a VCR to accompany musical notes. The VCR comprises an input means, a system controller, a modulator, a musical scale generator and an output switch. The input means generates serial data according to key signals of a remote controller or a VCR system. The system controller supplies a clock signal to the input means, and supplies each control signal to each part of the VCR system according to data signal from the input means. The modulator converts control signal from the system controller into plural signals which have different voltage levels. The musical scale generator generates plural musical scale signals according to the plural signals from the modulator. The output switch selects an output of the replayed audio signal from a video tape, or an output of plural musical scale signals from the musical scale generator. Thereby, the VCR can be variously utilized by generating the musical scale.

Description

Musical accompaniment

Figure is a block diagram of a musical accompaniment V-real according to the present invention.

* Explanation of symbols for main parts of the drawings

10: signal input unit 12: receiver

14: timer 20: system control

30: modulator 40: pitch generator

42: scale generator 44: amplifier

50: output switching unit 52: the adder

52: changeover switch

The present invention relates to a scale accompaniment VCR, and more particularly, to a scale accompaniment VCR in which a pitch can be generated according to various key signal inputs for operating the VCR.

Typically, in order to operate the VCR, a user operates a switch in the V-Cal set or a remote controller. In the operation of the V-Cal, when a key operation is performed by the remote control for the V-Cal operation, the intermittent sound of "삑" sounds as the power is applied to the V-Cal according to the key input signal.

In other words, the prior art is very monotonous since only a "beep" intermittent sound comes out during key operation.

SUMMARY OF THE INVENTION The present invention has been made in view of this point of the prior art, and an object thereof is to provide a scale accompaniment VRC capable of generating more various pitches in accordance with a key input signal during key operation of VRC.

In order to achieve the above object, the present invention provides an input means for generating serial data in accordance with a data signal from a receiver for inputting a key signal from a remote controller or a VCR system, providing a clock signal to the input means, and providing the input means. System control means for providing a control signal to each component of the VCR system based on the data signal from the system; and for converting the control signal from the system control means into a plurality of output signals having different voltage level values. On the basis of a modulating means, a pitch generating means for generating a plurality of preset pitches corresponding to a plurality of output signals from said modulating means, and a reproduction audio signal of a video tape based on a control signal from said system control means, or Pitch signal and the reproduced voice signal output from the pitch generating means Provides accompaniment scale V CR consisting of the output switching means switching control so that the mixed signal output.

In addition, in the musical accompaniment VRC according to the present invention, an integrator or a decoder can be employed as the modulation means for changing the pulse width modulation signal, and the pulse width is substantially output when the pulse width modulation signal is output from the system control means. An integrator for changing the modulation signal to an 8-step DC voltage is employed, and a decoder for decoding the binary data signal into an 8-step DC voltage when a 3-bit binary data signal is output from the system control means is employed.

On the other hand, the pitch generating means generates eight pitches corresponding to the voltage of eight steps from the modulating means, and further includes an amplifier for amplifying the eight pitches to a predetermined level.

Further, the output switching means employed in the scale accompaniment VRC of the present invention is a mixer for mixing the reproduced voice signal and the pitch from the pitch generating means, and the reproduced voice signal or reproduced voice on the basis of the control signal from the system control means. And a switching switch switched to output a signal mixed with the pitch.

Other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure shows a block diagram of a scale accompaniment VCR according to a preferred embodiment of the present invention.

In the scale accompaniment VCR of the present invention, the receiving unit 12 inputs a key signal from a remote controller or a VCR set, and the timer 14 receives the system control unit 20 and the serial data based on the input data from the receiving unit 12. Replace it. In addition, the system controller 20 provides a clock signal to the timer 14, generates a pulse width modulated signal according to the data signal from the timer 14, and simultaneously generates a control signal of the VCR system.

On the other hand, the modulator 30 changes the modulated signal from the system controller 20 to a DC voltage of a predetermined step, that is, 8 steps, and an integrator or decoder may be employed as the modulator 30 according to the present invention.

Here, the integrator is employed as the modulator 30 when the system controller 20 is configured to output a pulse width modulated signal, and when the decoder is employed as the modulator 30, the system described above. It is when the control unit 20 is configured to output a three-bit previous data signal.

Therefore, the signal converted into the DC voltage of 8 steps through the modulator 30 is converted into eight pitches through the scale generator 42. As described above, an example in which the 8-step DC voltage is converted into eight pitches is shown in the following table.

[table]

As can be seen from the above table, the signal converted into eight pitches through the scale generator 42 is amplified to a predetermined level through the amplifier 44 and then input to the mixer 52 to reproduce the tape (not shown). It is mixed with the reproduced audio signal from the circuit.

On the other hand, one variable contact (a) of the switching switch 54 included in the musical accompaniment VCR of the present invention is connected to the output line of the reproduced audio signal, the other variable contact (b) is connected to the output of the mixer 52 described above. Connected.

Accordingly, the changeover switch 54 having the above structure outputs a reproduced audio signal or outputs the reproduced audio signal and the eight pitch signals described above based on a control signal from the system controller 20 based on the user's operation signal. The output signal from the mixed mixer 52 is switched to be output.

That is, according to the present invention, when the changeover switch 54 is located at the a contact, the VCR performs normal normal regeneration according to the operation, and the changeover switch 54 is switched to the b contact by the user's operation as needed. A mixed reproduction is performed in which the reproduction audio signal of the tape and the pitch signal from the mixer 52 are mixed and reproduced.

As described above, according to the present invention, the playback voice signal of the tape and a plurality of pitch signals having different levels are mixed and output through the speaker by selection according to the user's needs, thereby making the operation of the VCR more diverse. You can try to expand.

In addition, the present invention can generate a pitch signal corresponding to the key operation signal as needed when the user operates the VCR, it can be used as a music learning textbooks of children, thereby increasing the use of the VCR.

Claims (5)

Input means for generating serial data in accordance with a data signal from a receiving unit for inputting a key signal from a remote control or a VCR system; providing a clock signal to the input means and based on the data signal from the input means; System control means for providing a control signal to each component of the system; Modulation means for converting the control signal from the system control means into a plurality of output signals having different voltage level values; Pitch generating means for generating a plurality of preset pitches corresponding to the plurality of output signals from the modulating means; A musical scale comprising an output switching means for switching and controlling the output audio signal of the videotape based on the control signal from the system control means or for outputting a pitch signal output from the pitch generating means and a signal mixed with the reproduction audio signal Accompaniment VRC. 2. The scale accompaniment VLC according to claim 1, wherein the control signal output from the system control means is a pulse width modulation signal and the modulation means is an integrator for changing the pulse width modulation signal to a DC voltage of 8 steps. . The musical accompaniment according to claim 2, wherein the pitch generating means generates eight pitches corresponding to the voltage of the eight steps, and further includes an amplifier for amplifying the eight pitches to a predetermined level. VRF. 2. The apparatus according to claim 1, wherein the output switching means comprises: a mixer for mixing the reproduced speech signal and the pitch from the pitch generating means, and the reproduced speech signal or the reproduced speech signal based on a control signal from the system control means. The scale accompaniment VRC further comprises a switching switch for switching so that the mixed signal is output. The musical accompaniment according to claim 1, wherein the control signal output from the system control means is a 3-bit binary data signal, and the modulation means is a decoder for decoding the binary data signal into an 8-step DC voltage. VRF.