KR19980067957A - VSIAL system with keyboard performance - Google Patents

Abstract

The present invention relates to a VSIAL system having a keyboard playing function, wherein a key controller is mounted at a predetermined position of the VSIAL set and a key sound selected from the key controller is output or currently pressed through an audio output means of the VSIAL system. The keyboard keys are displayed on the OSD screen to enhance the practical use of VSI system.

To this end, the present invention provides a keyboard function selection unit for selecting whether or not the keyboard function of the VSI system; A keyboard controller having a plurality of keyboard keys and outputting a step-by-step DC voltage corresponding to each key press; A scale generator for generating a scale according to the output of the keyboard controller; The keyboard function selection unit is scanned to determine an operation mode selected by the user, and when the key function selection key is pressed, the controller controls the scale generator and checks the signal output from the keyboard control unit to control the OSD character. A microprocessor for outputting; And an OSD processing unit which displays a keyboard screen pressed by the keyboard control unit according to the character control signal provided by the microprocessor.

Description

VSIAL system with keyboard performance

The present invention relates to a VSI system having a keyboard playing function, and more particularly, to mount a keyboard controller including a scale generator at a predetermined position of a VSI set and to select a keyboard sound selected from the keyboard controller. By using the on-screen display (OSD) screen, you can display the keyboard keys that are being output through the output means or are currently pressed, expanding the use of VSI system from adult to infant level and using VSI system at home. It is to make it easy to enjoy the scale study.

In the conventional VSI system, a remote control or a set body includes a key matrix including a plurality of function keys and digit keys to set an operation mode of the V system according to a user's intention. Accordingly, the microprocessor is configured to perform the operation mode set by the user by performing tape playback and recording operations on the video / audio signals or selectively controlling the deck portion or other portions.

By the way, the audio signal processing circuit provided in the conventional VA system may perform only the VA functions such as recording an audio signal input from the outside to a tape or outputting a signal reproduced from the tape to the outside. Also, the key matrix provided at a predetermined position of the remote controller or the set body may be used only as a key input means for selecting a signal scanned by the microprocessor of the VSI system according to a user's intention, and other It had a simple function with limited use.

Therefore, the present invention is equipped with a keyboard controller including a scale generating means at a predetermined position of the V-Sial set, and outputs the keyboard sound selected from the keyboard controller through the audio output means of the V-SIAL system or presses the currently-keyed key on the OSD screen. This allows the keyboard to be played using the VSI system, as well as the keyboard learning effect using the OSD screen output to the monitor, extending the use of the VSI system from the adult to the infant. At the same time, the purpose of the present invention is to provide a VSI system having a keyboard playing function for the user to easily enjoy musical study using the VSI system at home.

In order to achieve the above object, the present invention provides a keyboard function selection unit capable of selecting whether or not to perform a keyboard function of a VSI system; A keyboard controller having a plurality of keyboard keys and outputting a step-by-step output signal corresponding to each key press; A scale generator for generating a scale according to the output of the keyboard controller; The keyboard function selection unit is scanned to determine an operation mode selected by the user, and when the key function selection key is pressed, the controller controls the scale generator and checks the signal output from the keyboard control unit to control the OSD character. A microprocessor for outputting; And a OSD processing unit for displaying a keyboard screen pressed by the keyboard control unit according to a character control signal provided by the microprocessor.

1 is a block diagram schematically showing a part of a VSI system having a keyboard function according to an embodiment of the present invention

2 is an operation flowchart for explaining a keyboard function processed by a microprocessor in an embodiment of the present invention.

3 is a perspective view of a VSI system for explaining an embodiment of the present invention;

4 is an example of the OSD screen display that can be output to the monitor in the present invention

** Explanation of symbols for the main parts of the drawings **

1 keyboard door 2 tape inlet

3: power button SW1: keyboard function selection switch

10: keyboard function selection unit 20: microprocessor

30: OSD processing section 40: video signal processing section

50: keyboard control unit 60: scale generation unit

70: audio signal processor

Hereinafter, a configuration of a VSI system having a keyboard playing function according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the configuration of a part of a VSI system having a keyboard playing function according to an embodiment of the present invention.

As shown in the drawing, the present invention includes a keyboard function selection unit 10 having a keyboard function selection switch SW1 so that an external user can arbitrarily perform a keyboard function of the VSI system, and a plurality of keyboard keys. Each time a key is pressed, a key controller 50 capable of outputting a step-by-step voltage corresponding to the key is generated, and a key sound generated according to an output voltage of the key controller 50 is driven by driving according to a control signal of a microprocessor. The scale generator 60 and the keyboard function selector are scanned to determine an operation mode selected by the user, and when the keyboard function select key is pressed, the signal output from the keyboard controller is controlled while operatively controlling the scale generator. Microprocessor 20 for performing a series of system control operations such as checking and outputting a character control signal for OSD character generation; Depending on the character control signal provided by the microprocessor is preferably configured to include an OSD processing unit 30 to display the screen keyboard is pressed in the keyboard control section.

In addition, the scale generator 60 may be configured to output, for example, a scale corresponding to the command pressed by the keyboard controller as a frequency signal in the audible region.

FIG. 2 is a flowchart illustrating a key function processed by a microprocessor according to an exemplary embodiment of the present invention. As shown in FIG. 2, the key function is checked by checking whether a signal coming from the key function selection unit is a logic high level (H). In step S21, if the logic high level is input, the keyboard function is selected, and the operation mode of the VSI system is changed to the keyboard function execution state and the scale generator is driven at the same time. And displaying a keyboard picture on the OSD screen (S22-S23), and judging whether the keyboard key is pressed in the display state, and when the keyboard key is pressed, a corresponding keyboard key is displayed on the keyboard screen on the OSD. It consists of the steps (S24-S25).

FIG. 3 is a perspective view of a VSI system for explaining an embodiment of the present invention. As shown in the drawing, the present invention includes a plurality of keyboard keys 50a, each time a key is pressed, corresponding to the stepped voltage. The keyboard control unit 50 for outputting the control unit and the switch SW1 for selecting a keyboard function are integrally mounted at a predetermined position of the VSIAL set 10, respectively.

Reference numeral 1 is a key door, 2 is a tape inlet, 3 is a power switch, and 4 is a power indicator.

FIG. 4 is a diagram illustrating an example of an OSD screen display that can be output to a monitor in the present invention. In the drawing, when a user simultaneously presses a key of a les, a wave, and a poem, the display can be displayed on a monitor screen.

The operation of the present invention as described above is as follows.

First, in the present invention, the microprocessor 20 checks the signal coming from the keyboard function selection unit (S21) to determine whether the keyboard function is selected.

At this time, if the logic low level signal L is checked (N branch of S21), the existing operating mode of the VSI system is executed, and if the signal of logic high level H is checked (Y branch of S21). Determines that the keyboard function is selected, switches the operation mode of the VSI system to the keyboard function execution mode, and simultaneously drives the scale generator (S22) to generate a corresponding keyboard sound when a key is pressed. A keyboard picture is displayed on the screen (S23).

Next, in the OSD display state, the microprocessor 20 determines whether the key is pressed again (S24), and when the key is pressed (Y branch of S24), the keyboard continues through the scale generator 60. By generating a sound and displaying flickering on a keyboard key corresponding to the keyboard screen on the OSD (S25), it is possible to easily confirm the currently pressed keyboard key and use it for learning purposes.

According to the present invention as described above, not only the keyboard can be played using the VSI system, but also the keyboard learning effect can be obtained using the OSD screen output to the monitor so that the use layer of the VSIAL system is extended from the adult to the infant layer. At the same time, it is useful to enjoy the musical scale study using VSI system at home.

Claims (1)

A keyboard function selection unit for selecting whether to perform a keyboard function of the VSI system; A keyboard controller having a plurality of keyboard keys and outputting a step-by-step DC voltage corresponding to each key press; A scale generator for generating a scale according to the output of the keyboard controller; The keyboard function selection unit is scanned to determine an operation mode selected by the user, and when the key function selection key is pressed, the controller controls the scale generator and checks the signal output from the keyboard control unit to control the OSD character. A microprocessor for outputting; And a OSD processor for displaying a keyboard screen pressed by the keyboard controller according to a character control signal provided by the microprocessor.