KR950003387Y1 - Auto-mode exchange appartus for vcr - Google Patents

Abstract

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Description

VRC's Automatic Mode Switching Device

1 is a circuit diagram for explaining a mode switching of a conventional VR.

2 is a circuit diagram for explaining the automatic mode switching of V-seal of this article.

* Explanation of symbols for main parts of the drawings

1: Tuner 2: Image Processing

3: modulation section 4: switching section

5: A / V Skat 6: Channel Skat

10: Mode control unit IC1, IC2: 6dB buffer

The present invention relates to automatic mode switching of a VCR, and more particularly, to an automatic mode switching device of V-CAL capable of automatically decoding a Canal Pulse signal according to a mode. In the conventional automatic switching of V-Cal, a tuner unit 1 which receives a plurality of broadcast signals from an antenna as shown in FIG. 1 and selectively tunes the broadcast signals according to a user's intention, and the tuner unit ( 1) Receives the line video input and the video output to be output, and receives the signal of brightness and color signal, OSD (On Screen Display), etc. An image processor 2 for processing a signal, a modulator 3 for receiving a modulated signal from the image processor 2, an image processor 2, a tuner 1, and a video output And a switching unit 4 comprising switches (two stage switching integrated circuits or two stage slide switches) SW2 and SW3 for receiving a line video input and selectively switching by a user. Take the signal and increase it to 6 dB And a 6dB buffer IC1 for outputting line video through an A / V scat 5 through a buffer function, and amplifying and buffering the signal at 6dB by receiving the signal from the switching unit 4. It consists of a 6dB buffer (IC2) to input video through the channel SCART (6).

According to the related art configured as described above, the user selects the corresponding mode by operating the switches SW2 and SW3 of the switching unit 4 provided outside the VR in accordance with each mode.

First, in the EXT mode, when the general broadcast signal is received by using the tuner unit 1 built in the VAL, the antenna is switched to the tuner unit 1, the tuner unit 1 to the switch SW1, and the switch. From SW1 to image processor 2, from image processor 2 to modulator 3, from image processor 2 to switch SW2 of switch 4, 6 dB buffer from switch SW2. In IC1, a loop is formed in which the signal sequentially flows from the 6 dB buffer IC1 through the A / V scart 5 to the line video output.

In addition, the antenna upon receiving the pulse to be canned. Tuner section (1), switches (SW1, SW3), 6 dB buffer (IC2), channel skat (6) and video inputs and canal video outputs, switches (SW1), image processing section (2), modulation section (3) and In the image processing section 2, a loop is formed in which signals flow from the switch SW2, the 6 dB buffer IC1, the A / V scart 5, and the line video output.

Next, when receiving a general broadcast signal using the tuner unit 1 in the TV mode, the signal is transmitted from the antenna to the tuner unit 1 and to the switch SW1, the image processing unit 2, and the modulation unit 3. In turn, a loop is formed.

In addition, when the canal signal is received, the loop formed in series from the antenna to the modulator 3 is the same, and since the pulse signal to be canned does not go through the canal box (not shown in the drawing), no recording is performed.

In addition, when the tuner unit 1 receives a general broadcast signal and receives a pulse signal to be broadcast by TV, it can be recorded by a loop formed in series from the antenna to the modulator 3, and the canal signal received by the TV is a line video input, A / V Skat (5), Switch (SW3), 6 dB Buffer (IC2), Channel Skat (6), Connect Box, Channel Skat (6), Switch (SW2), 6 dB Buffer (IC1), A / V Skat ( 5) The line video output, that is, the line video output, can be seen as the signal to be decoded by TV as the signal to be decoded.

However, in the related art, it is very inconvenient to use V-Cal because the user needs to directly operate the switches SW2 and SW3 according to each mode.

This paper has been devised in view of the above-mentioned shortcomings, and the switching to set each mode is automatically performed according to the corresponding mode by the remote controller used by the user. Its purpose is to provide the automatic mode switching device of the seed.

Hereinafter, embodiments of the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

2 is a circuit diagram of the present invention, a tuner unit 1 and a switch SW1, an image processing unit 2, a modulator 3, a switching unit 4, 6 dB buffers IC1 and IC2, and an A / V Scotty ( 5) The channel skat 6 is the same as the conventional one, and is connected to the switching unit 4 so as to apply a signal according to each mode. .

According to this proposal, the address channel is classified as AD channel “00 ~ 39” that can receive SECAM signal, and AD channel “40 ~ 79” can receive PAL signal. Assign to existing channel.

And, in the TV mode in the AD channel "00 ~ 35", the mode control unit 10 automatically generates a high signal, at this time can be seen by decoding the pulse signal to be broadcast on the TV while recording a general broadcast signal.

Also, the AD channels “36 to 39” are channels for recording pulse signals to be extracted, and at this time, the mode controller 10 generates a low signal.

In other words, the loop path in the TV mode is formed of an antenna, a tuner unit 1, a switch SW1, an image processor 2, and a modulator 3 to record a general broadcast signal, and a canal pulse signal received through a TV. The loop is composed of TV, line video input, A / V cart (5), switch (SW3), 6dB buffer (IC2), line video output, and TV in order to see the decoded pulse signal to be TV. have.

As described above, the present invention does not require manual operation of the switching unit 4 because the mode control 10 automatically adjusts the switching unit 4 according to each mode. have.

Claims (1)

A tuner unit 1 which receives a plurality of broadcast signals from an antenna and selectively tunes the broadcast signal according to a user's intention, receives the tuner unit 1, a line video input, and a video output to be output by each user. An image processor 2 for processing luminance and color signals, an OSD, and the like, by receiving a signal of a switch SW1 selectively switching according to the signal, and a modulator 3 for receiving and modulating a signal of the image processor 2. And a switching unit 4 which selectively receives the image processing unit 2 and the tuner unit 1 and a video output and a line video input to be converted, and receives and amplifies the signal from the switching unit 4. A 6dB buffer IC1 for buffering and outputting a line video through the A / V scart 5, and a video input to be amplified and buffered by receiving the signal from the switching unit 4 to be channeled through the channel scart 6. doing V-Cal which includes a 6dB buffer IC2 and a mode control unit 10 connected to the switching unit 4 so as to apply a signal according to each mode so that the pulse signal to be extracted in the TV mode can be viewed on the screen. Mode switch.