KR920004438Y1 - On screen display data recording apparatus - Google Patents

Abstract

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Description

OSD Screen Information Recorder

1 is a schematic diagram of a screen information recording apparatus according to the present invention.

2 is a data flow diagram of a microprocessor controlling the screen information recording apparatus according to FIG.

* Explanation of symbols for main parts of the drawings

10: system control means 20: first switching means

30: luminance / color separation means 40: second switching means

50: OSD generating means 60: third switching means

70: amplification means

The present invention relates to an OSD (On Screen Display) screen information recording apparatus, and more particularly, to an apparatus for recording information displayed by the OSD on a magnetic tape when recording a video screen using a VTR.

In general, an image processing apparatus such as a TV or a VTR includes an image display means such as a cathode ray tube or a cathode ray tube or a monitor, and this image display means is capable of performing an OSD function.

The OSD circuit of the image processing apparatus receives data from a microprocessor, generates characters according to a synchronization signal separated from a composite video signal, and mixes them in a mixer circuit to transmit them to a video output terminal. That is, when there is a video signal with a signal output from the microprocessor, a character is displayed on the video screen, and when there is no video signal, a character is displayed on the blue screen. However, when the video signal is recorded by the image processing apparatus employing the OSD circuit, the information by the OSD function is not recorded on the magnetic tape at the same time, so there is a problem that it is not possible to know which broadcast channel is recorded by the playback of the video screen. .

In order to solve the above problems, an object of the present invention is to provide an OSD screen information recording apparatus capable of knowing character information at the time of recording by recording character information appearing on an OSD screen together with a video screen on a magnetic tape.

In order to achieve the above object, the present invention provides a transistor Q7 driven by a reset signal read by a microprocessor and interlocked with an output of a gate G1 connected to the transistor Q8. Integrated system control means; First switching means for driving a transistor (Q2) (Q1) with respective output signals of the gate (G1) and transistor (Q7) of the system control means to switch the video input signal; Brightness / color separation means for receiving an OSD information signal and a video input signal switched by the first switching means and separating the brightness into a brightness signal and a color signal to perform frequency modulation; Second switching means for conducting and outputting one of the transistors Q5 and Q6 by switching the transistors Q5 and Q6 with the video signal outputted from the luminance / color separation means and the signals output from the system control means. ; OSD generating means for switching one of the transistors (Q2) of the first switching means and the transistor (Q5) of the second switching means to generate an OSD signal as a video signal output from the transistor; Third switching means for switching the video signal transmitted from the OSD generating means and the OSD signal by the signals output from the system control means to one of the luminance / color separation means and the video output signal stage; And amplifying means for amplifying the video signal which is frequency-modulated by the luminance / color separation means and adjusted in level.

Hereinafter, the present invention will be described in detail with reference to the illustrated drawings.

1 shows an embodiment of an OSD recording apparatus according to the present invention.

In FIG. 1, the system control means 10 receives a reset signal read out from a microprocessor not shown in the figure and applies it to the base of the transistor Q8 to invert at the point A and ends with the recording mode signal. It is input to G1). The output signal of the end gate G1 is applied to the base of the transistor Q7 and the collector of the transistor Q6 constituting the second switching means 40 and an on / off signal is an emitter of the transistor Q7. The signal at point B is inverted at point C. Further, the collector of the transistor Q1 constituting the video input means 20, the third switching means 60, the collector of the transistor Q4 constituting the transistor, and the transistor constituting the second switching means 40 ( The signal at point C is applied to the collector of Q5) to operate.

Table 1 shows each point (A, B, C) level signal of the system control means 10.

On the other hand, when the end gate (G1) output point (B) of the system control means 10 is "less than" as shown in Table 1, the OSD generating means 50 through the transistor (Q2) of the first switching means 20 ) And the output of the OSD generating means 50 is transmitted to the transistor Q3 of the third switching means 60 and the output thereof is transmitted to the luminance / color separation means 30. Therefore, the information of the OSD generating means 50 is frequency modulated (FM) by the luminance / color separation means 30 together with the video signal and recorded on the magnetic tape through the amplifying means 70.

In addition, when the point B of the system control means 10 is "low" as shown in [Table 1], that is, is inverted at the point C and is "high", the luminance / through the transistor Q1 of the first switching means 20. It is input to the color separation means (30). The video signal input to the luminance / color separation means 30 is appropriately level-adjusted and input to the generating means 50 via the transistor suter Q5 of the second switching means 40. The video signal input to the OSD generating means 50 is transmitted to the video output signal terminal through the transistor Q4 of the third switching means 60.

2 is a flowchart of processing a reset signal through a program of a microprocessor without manually controlling the system control means 10 of the OSD recording apparatus according to FIG.

In FIG. 2, when the program of the microprocessor is started to be read by the start signal 1, the function goes through the stop mode step 2, the recording mode step 3, and step 4 in which the reset is "low". (5) Examining the case where you no longer want to record the OSD information by interrupting the reset signal by the key (5) and checking the reset time when you want to record the OSD information for only a certain period of time. The program by the microprocessor is terminated by the end signal 9 through the step 7 and the stop mode step 8 in which (6) is executed and the reset signal is " high ".

As described above, the present invention has the advantage of recording the OSD information at the time of recording with the video signal when performing recording using the VTR.

Claims (1)

System control means (10) comprising a transistor (Q7) driven by a reset signal read by a microprocessor and driven according to the output of the gate (G1) connected to the transistor (Q8); First switching means (20) for driving the transistors (Q2) and (Q1) with respective output signals of the gate (G1) and the transistor (Q7) of the system control means to switch the video input signal; Brightness / color separation means (30) for receiving an OSD information signal and a video input signal switched by the first switching means and separating the brightness into a brightness signal and a color signal to perform frequency modulation; Second switching means for conducting and outputting one of the transistors Q5 and Q6 by switching the transistors Q5 and Q6 with the video signal outputted from the luminance / color separation means and the signals output from the system control means. 40; OSD generating means (50) for switching one of the transistor (Q2) of the first switching means and the transistor (Q5) of the second switching means to generate an OSD signal with a video signal output from the transistor; Third switching means (60) for switching the video signal transmitted from the OSD generating means and the OSD signal by the signals output from the system control means to one of the luminance / color separation means and the video output signal stage; And amplifying means (70) for amplifying a video signal whose level is modulated by the luminance / color separation means.