KR950001185Y1 - Recording circuit of pip screen - Google Patents

Abstract

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Description

Recording circuit of the child and mother screen

1 is a system of a video tape recorder in which a conventional mother-child screen is generated.

2 is a system of a video tape recorder in which the self-parent scene is generated in the present invention.

* Explanation of symbols for main parts of the drawings

1: input selector switch 2: luminance / color processing element

3: PIP part 4: Output selector switch

LI: Line In TI: Tuner In

REC: Record Signal PB: Play Input

SW1: Analog Switch

The present invention relates to a video tape recorder capable of generating a mother-child screen, and relates to a recording circuit of a mother-child screen for recording and editing a signal composed of the mother-child screen.

The PIP (Picture IN Picture) function allows a small sub picture to be inserted on one side of the mother screen, which allows you to select both broadcast channels and to view both the playback signal of a video tape recorder and the TV broadcast signal. It is widely used in video tape recorders.

However, in the existing video tape recorder with the PIP function, the TV broadcast is inserted into the child screen when the main screen is played, or the playback output of the video tape recorder is inserted into the child screen when the TV broadcast is the mother screen. Was used only for viewing, and the recording and editing functions could not process the screen.

The present invention is to solve such a problem, and the purpose of the present invention is to enable the child screen to be used as a recording signal in the system that configures the mother screen and the child screen using two video inputs. It was to provide recording circuit of mother screen.

Such an object can be achieved by allowing the first video signal and the second video signal to be applied to the PIP unit to make a child screen in advance and to obtain a desired output by an input selection switch.

A feature of the present invention is an analog switch for selecting a line input and a reproducing input of a video tape recorder, and a PIP unit connected to generate a self image display as a video signal supplied by the analog switch and a tuner line. And an input selection switch connected to the front end and the rear end of the PIP part to receive an input and an output of the PIP part, and a line for outputting jacks, RE conversion outputs, and recording signals for recording and having an output selected by the input selection switch. The signal processing of the present invention consists of luminance / color processing elements.

Hereinafter, described in detail by the accompanying drawings as follows.

FIG. 1 shows a system of a video tape recorder in which a conventional mother-child screen is generated.

This circuit comprises an input selection switch 1 for selecting a line input LI and a tuner input TI, a luminance / color processing element to which a reproduction signal PB of a video and an output of the input selection switch 1 are supplied. (2), a PIP unit 3 for generating the child screen by applying the output of the input selection switch 1 and the output of the luminance / color processing element 2, and the PIP unit 3 described above. And an output selector switch 4 for synthesizing the output of the output and the luminance / color processing element 2 and outputting the video signal as a video signal.

Here, V1 denotes a video signal corresponding to the line input L1 and the tuner input T1 selected by the input selection switch 1.

The present invention provides an analog switch (SW1) for selecting a playback input (PB) of a line input (LI) and a video tape recorder, and a video signal (V1) and a tuner input (T1) selected by the analog switch (SW1). A PIP unit 3 for generating a child screen as a supplied video signal V2, an input selection switch 1 for receiving and selecting an output of the PIP unit 3, and an input selection switch 1; By the luminance / color processing element 2 which receives the selected output.

The output of the luminance / color processing element 2 is a jack JACK for outputting a video signal, an RE conversion output RF, and a recording signal REC for recording.

In the present invention configured as described above, V2 represents a video signal reproduced in a video tape recorder.

V1 + V2 is the output of the mother-child screen.

As in the above circuit, the video signal V1 selected by the input selection switch 1 and the video signal V2 to be reproduced are output from the video signal V1 + V2 composed of the mother screen and the child screen at the PIP 3. The desired output is selected by the output selector switch 4.

Therefore, the video output used as the recording signal REC is configured to be output only to the luminance / color processing element 2 so that only one of the video signals applied from the line input and the tuner input is selected and recorded. The recording output could not be obtained.

The circuit which solves this problem is shown in FIG.

One of the line input LI and the playback input PB is selected by the analog switch SW1. When a high level signal is supplied to the analog switch SW1, the playback input PB is selected and the analog switch SW1 is selected. When the low level signal is supplied to the line input LI, the line input LI is selected.

In this way, the video signal V1 selected as the analog signal and the video signal V2 input from the tuner input TI are input to the PIP unit 3 to form a mother-child screen.

In addition, the input selection switch 1 receives the video signal V1 + V2 having the self screen and the video signals V1 and V2 input from the front end of the PIP part, respectively. Desired video signals V1, V2, and V1 + V2 can be selected directly.

The operation of the input selection switch 1 is operated by a switch provided in the front panel of the set.

Therefore, the desired video signal can be selected by the input selection switch 1. When the video signal V1 + V2 of the mother screen is selected, the video signal for the mother screen is the luminance / color processing element 2. In this case, the recording signal (REC) is inputted, so that the recording signal obtained by editing the parent / child screen can be obtained, so that the recording of the parent / child screen can be performed.

As described above, the present invention allows the first video signal and the second video signal to be synthesized in the PIP unit so that the child screen can be configured and the desired screen can be selected at the front and rear ends of the PIP unit. It is effective to obtain the recording signal of the parent screen.

Claims (1)

An analog switch SW1 for selecting a line input LI and a playback input PB of a video tape recorder, and a video signal V1 and a tuner line T1 selected by the analog switch SW1. An input selection switch connected to the PIP unit 3 connected to the PIP unit 3 and the front and rear ends of the PIP unit 3 to generate a self-parental screen as a signal V2, and to receive and select the input and output of the PIP unit 3. (1) and a luminance / color which has a line for outputting a jack, an RF conversion output RF, and a recording signal REC for recording, and performs signal processing on an output selected by the input selection switch 1; A video recording circuit comprising a processing element (2) and a parent screen.