KR19980041083U - A liquid crystal television recorder that can record, record, and play back with cassette tape - Google Patents

Abstract

The present invention relates to a portable television and a video cassette recorder capable of recording, recording, and playing back with a cassette tape, and more particularly, to record and play a video signal simultaneously with recording and playback of voice using a cassette tape medium for general voice recording. It relates to a device that can be combined.

The present invention includes a television receiver circuit portion including a tuning circuit portion, an image detection circuit portion, an image output circuit portion, a display device driving circuit portion, and a liquid crystal display device; A video recording and reproducing circuit unit comprising an image head, an image recording circuit unit and an image reproducing circuit unit; In a portable television receiver, a video recording player, and a cassette tape recorder in which a cassette tape recorder circuit portion including a sound head, a sound reproduction circuit portion, and a sound recording circuit portion is combined, a video signal and an audio signal are recorded using a cassette tape medium. By providing a portable television, a video cassette recorder, characterized in that the playback and playback, it is possible to record and play the video signal using a conventional cassette tape, providing an effect that can be compatible with the general recorder and the recording medium. .

Description

A liquid crystal television recorder that can record, record, and play back with cassette tape

The present invention relates to a portable television and a video cassette recorder capable of recording, recording, and playing back with a cassette tape. It relates to a device that can be combined.

Conventional portable recorders perform recording and playback functions using a cassette tape as shown in FIG. Such a cassette tape is composed of a case 20, two reels 30 and 31, a tape 40 and a tape traveling device 45 wound around the two reels and moving reciprocally and coated with a magnetic material. .

Fig. 1 (b) shows the track of the tape side of the cassette tape. A typical cassette tape is divided into four tracks when viewed in the running direction and in the vertical direction.

These four tracks are divided into two tracks in the upper part and two tracks in the lower part. When rotating in one direction, the two tracks in the upper part are divided into the LEFT and RIGHT channels of the stereo and rotated in the other direction. The two tracks at the bottom of the frame are used as the stereo LEFT and RIGHT channels.

On the other hand, recently, camcorders using 8mm cassettes are commercially available. This camcorder is a video recording apparatus, which can record a video using an 8mm cassette tape for video, and has a structure in which the recorded contents can be checked through a monitor of the camcorder.

In addition, portable televisions and camcorder devices in which a television reception function is added by utilizing the liquid crystal display device of the camcorder have been spread.

Such a camcorder is a device that incorporates a television radio reception function into a conventional camcorder device and outputs the reception screen through the display device of the camcorder.

In this case, the portable cassette tape recorder and the camcorder are difficult to combine with each other because their recording media are different, and a mechanical device using a separate tape must be added, thereby increasing the volume of the device and increasing the price of the product. The problem arises.

The present invention has been made to solve the above problems, and a cassette tape recorder for a television receiver, an image recorder and a player that enables recording and playback of the image using a cassette tape medium in a portable television receiver having a liquid crystal display device. It aims to provide.

1 is a structural diagram showing a structure of a cassette tape to which the present invention is applied, and FIG. 1 (b) is an explanatory view showing each track formed on the tape surface of the cassette tape;

Figure 2 is a block diagram showing the configuration of a portable television, a video cassette recorder combined according to the present invention.

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

100: television receiver circuit unit 110; tuning circuit unit

120; image detection circuit unit 150; display device driving circuit unit

160; liquid crystal display device 170; voice detection circuit unit

180; audio output circuit unit 200; video recording and playback circuit unit

210; video playback circuit 220; video head

230; video recording circuit unit 300; recorder circuit unit

310; voice recording circuit unit 320; voice head

330; audio reproduction circuit unit 340; audio output circuit

In order to achieve the above object, the present invention includes a television receiver circuit portion including a tuning circuit portion, an image detection circuit portion, an image output circuit portion, a display device driver circuit portion, and a liquid crystal display device; A video recording and reproducing circuit unit comprising an image head, an image recording circuit unit and an image reproducing circuit unit; In a portable television receiver, a video recording player, and a cassette tape recorder in which a cassette tape recorder circuit portion including a sound head, a sound reproduction circuit portion, and a sound recording circuit portion is combined, a video signal and an audio signal are recorded using a cassette tape medium. It provides a portable television, video cassette recorder, characterized in that the playback.

At this time, the video recording and reproducing head records and reproduces a video signal by using three tracks out of four tracks that divide the cassette tape medium in a direction parallel to the traveling direction, and reproduces the voice for recording and reproducing the voice. The head may be configured to record and reproduce an audio signal using one of four tracks that divides the cassette tape medium in a direction parallel to the running direction thereof.

EXAMPLE

Referring to the accompanying drawings, a preferred embodiment of the present invention in detail as follows.

2 is a block diagram of an apparatus constructed in accordance with the present invention.

The structure of the apparatus can be broadly classified into a television receiver circuit unit 100, a video recorder circuit unit 200, and a cassette tape recorder circuit unit 300. The present invention is a portable television formed by combining the three circuit units. Applicable for receivers, video recorders and cassette tape recorders.

The device according to the present invention has three modes of operation.

The first is a normal cassette tape recording and playback mode, the second is a television reception mode, and the third is a television video recording and playback mode.

In the normal cassette tape reproducing mode, the cassette tape is driven through the cassette tape driving device, the voice signal is detected through the voice head 320, and the voice signal is processed by the voice reproducing circuit unit 330 having a de-emphasis circuit. The output amplifies through the output amplifier 340 to drive the earphone. In addition, it is also possible to convert the voice detected voice signal from the television receiver circuit unit 100 into a former and magnetic signal through the voice recording circuit unit 310 and then record the same through the voice head 320.

In the liquid crystal television reception mode, a tuning circuit unit 110 for selecting a frequency of a desired broadcasting station during television propagation, and a voice detector 170 for detecting a necessary audio signal and a video signal from high frequency signals received by the tuning circuit unit 110, respectively. And an image detector 120, a display device driver circuit 150 for driving an image signal through the display device, a liquid crystal display device as a display device, and an audio output circuit unit 180 for outputting the voice detected voice signal. The operation is performed through the television receiver circuit unit 100 configured to include.

In the reproduction and recording mode for the liquid crystal television only, the video signal received by the television receiver circuit unit 100 is recorded and reproduced, and the recording and reproducing operation is achieved using a cassette tape medium.

In this case, as an embodiment of the present invention, three tracks of the cassette tape may be used as a video signal, and the other track may be used for recording the voice signal.

In such a video recording and reproducing apparatus, it is necessary to record and reproduce hundreds of times the wideband video signal in comparison with audio and the like. Therefore, it is necessary to speed up the relative speed of the video head and its recording medium and increase its recording density.

On the other hand, since the apparatus according to the present invention aims at the compatible use of a tape recorder and a tape in a video recording / reproducing period by using a conventional audio recording cassette tape, the recording method of the recording head is described in detail. After 4 minutes of running surface, one track is recorded by using a conventional voice recording method, and is configured to be playable.

The device according to the present invention is capable of 60 minutes of recording and playback in one direction when using a cassette tape having a 120-minute running time for voice recording.

According to the above-described configuration and operation, the present invention portable television and video combined cassette recorder use the existing cassette tape to record and reproduce the video signal, thereby providing an effect that can be compatible with the general recorder and the recording medium. do.

Although the present invention has been shown and described in connection with specific preferred embodiments, the present invention may be variously modified and changed without departing from the spirit or the field of the present invention provided by the following utility model registration claims. Those skilled in the art will readily recognize that there is a.

Claims (2)

A television receiver circuit unit 100 including a tuning circuit unit 110, an image detection circuit unit 120, an image output circuit unit 140, a display device driving circuit unit 150, and a liquid crystal display device 160; A video recording and reproducing circuit unit 200 including an image head 210, an image recording circuit unit 220, and an image reproducing circuit unit 230; In a portable television receiver, a video recording player, and a cassette tape recorder, which are a combination of a cassette tape recorder circuit unit 300 including a voice head 310, a voice playback circuit unit 330, and a voice recording circuit unit 320, A portable television and video cassette recorder, characterized by recording and reproducing video and audio signals using a cassette tape medium. The video recording and reproducing head according to claim 1, wherein the video recording and reproducing head records and reproduces a video signal by using three tracks out of four tracks that divide the cassette tape medium in a direction parallel to the running direction thereof. The voice head for recording and reproducing the voice is characterized by recording and playing back a voice signal using one of four tracks that divides the cassette tape medium in a direction parallel to the driving direction thereof. Combined cassette recorder.