KR100202535B1 - Method for displaying drum an alin by using on screen display of vcr - Google Patents

Abstract

The present invention relates to an automatic display of the head foreign matter state OSD of the BC-R, it is a technical problem to form an OSD screen when the screen numbness occurs in the head foreign matter.

Therefore, when the present invention detects the RF envelope signal and is below a certain level, the microprocessor 1 drives the on-screen processing unit 2 to generate the OSD text signal for several seconds on the head foreign matter state. do.

In addition, the present invention is intended to enable consumers to take action by providing information about hayeul that can occur frequently during use in BC.

Description

How to display drum foreign material using V-Cal's on-screen display

1 is a block diagram of a drum foreign material display using an on-screen display of the V-Cal of the present invention.

Figure 2 is a characteristic diagram for level discrimination in the drum foreign material display using the on-screen display of the present invention V-real.

Figure 3 is a signal flow diagram for the drum foreign material display using the on-screen display of the VR of the present invention.

* Explanation of symbols for main parts of the drawings

1: microprocessor 2: on-screen processor

The present invention relates to a VRC having an On-Screen Display (OSD) function, and particularly detects a radio frequency (SF) envelope signal read from a head drum for auto-tracking and detects the signal level. When this is low, the present invention relates to a drum foreign material display method using V-Cal's on-screen display to provide information on the OSD screen that there is a head foreign material.

In conventional V-Cal, various protection devices such as auto head clean to prevent foreign substances are attached and a cleaner tape is provided.However, screen blindness occurs when screen blindness occurs when playing a tape by head foreign materials. There was a problem that consumers could not easily know.

It is an object of the present invention to create a drum foreign material display method using an on-screen display of V-CAL that detects an RF envelope signal and automatically displays it on an OSD screen at a specific level or less so that the consumer can easily understand. It will be described below in detail by the accompanying drawings.

FIG. 1 is a block diagram of a drum foreign material display using an on-screen display of VRC according to the present invention. As shown therein, the microprocessor 1 which detects an RF envelope input and generates a control signal for on-screen is shown. And an on-screen processing unit 2 having a character generator for applying a video input as an output when there is no control signal.

2 is a characteristic diagram for level discrimination in the drum foreign material display using the on-screen display of the present invention, as shown therein, when the level is less than the reference level, when no signal or there is a head foreign object noise The level is shown, and when the level is higher than the reference level, a good normal envelope level is shown.

Hereinafter, the effect of the present invention configured as described above will be described with reference to FIG. 3, which is a signal flow diagram for displaying a drum foreign material.

First, it is determined whether the current mode is the regeneration mode, and if it is not in the regeneration mode, it is unnecessary to provide information on the head foreign matter, and therefore, the state is stopped and the envelope level is detected in the regeneration mode.

Here, as shown in FIG. 2, the envelope level has a normal good envelope level and a noise level when a head foreign object or no signal is present. Detects no signal.

In this way, upon detecting the characteristic level or less, the counter is turned on on the OSD screen to drive information provision on the OSD screen for several seconds, and the OSD data is output by the control signal of the microprocessor 1. At this time, the on-screen display processing unit 2 is an example in which the character generator outputs the character information video signal by the control signal of the microprocessor 1, and displays a character of blank tape or head foreign object on the OSD screen.

After n seconds, n seconds counter n is compared to automatically remove the OSD screen. After n seconds, the n seconds counter is turned off and reset, and the OSD data output is turned off. In this way, the informational display is displayed for n seconds on the OSD screen.

As described in detail above, the present invention detects the head foreign matter on the OSD screen, so that the user can be intimately informed when the cleaner should be used.

Claims (1)

In the reproducing mode, a reproducing signal amount detecting step for detecting the magnitude of the reproducing signal, a signal amount determining step for determining whether the detected reproducing signal amount is a normal magnitude, and driving a character generator when the reproducing signal amount is not the normal magnitude; Drum foreign material display method using an on-screen display of V-C, characterized in that it comprises a character signal output step of outputting a character signal.