KR19990043331A - VCR video tape presence and endless looping method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repeating and playing a video tape of a VCR. The present invention relates to a method of allowing a user to play a finite or infinite repeating content in a specific section set when a user watches a video tape. The present invention allows the control pulse at the time when the start setting button and the end setting button are operated to be recognized as a start point and an end point while the contents recorded on the videotape are reproduced, and the number of controls between the start point and the end point is counted. If the number of infinite and repeated replay times is set, the control pulse indicating the starting point is found by going back to the number of control pulses counted backward from the control pulse automatically recognized as the end point, and the same contents are repeated for the above finite number of times. The present invention proposes a method of repeating and playing a video tape of a VCR, which has an effect of bringing a qualitative improvement through repetitive learning by playing repeatedly or infinitely.

Description

JVC videotape play with and without repeat

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repeating and playing a video tape of a VCR. The present invention relates to a method of allowing a user to play a finite or infinite repeating content in a specific section set when a user watches a video tape.

In general, a VCR (VIDEO CASSETTE RECORDER) is a device used for recording and playing back a television signal, recording and playing back another cassette tape, broadcasting recording of another channel that is not viewed, and absent recording. In case of no signal at present, since there is no residual magnetism by bias magnetic field, AC bias method with low noise is adopted, and recording of audio signal is relatively narrow in frequency range of 20-20000Hz, and it is not a problem of phase relationship. Since it is not necessary, it is performed by the said AC bias method. However, the frequency modulation (FM) recording method has been adopted for recording video signals because its frequency range is wide, about 0-4 MHz, and strict phase characteristics are required to faithfully reproduce waveforms.

On the contrary, during reproduction, the recorded magnetic tape is driven while being connected to the gap of the magnetic head, and the signal read by the magnetic head is amplified and processed and reproduced through the water pipe and the speaker.

However, if the VCR having the general function as described above does not have a function of repeatedly reproducing only the content within a specific section among the contents recorded on the videotape currently being played, and it is necessary to repeat the same content or the like. There is an operational problem that requires manual operation.

Accordingly, the present invention has been invented to solve the above problems, and an object of the present invention is to set the repetition number to be the start point and the end point, and to set the number of repetitions to be finite or infinite during the playback of the videotape. Accordingly, the present invention provides a method of repeating and playing a video tape of a VCR in which the same contents in a section desired by a user are repeated by the set finite or infinite number of times.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram for explaining a method of repeating and playing a video tape of a VCR of the present invention.

2 is a flowchart showing a method of repeating and playing a video tape of a VCR according to the present invention.

* Explanation of symbols for main parts of the drawings

100: antenna 151: high frequency amplifier

152: mixing unit 153: local oscillation unit

200: IF amplifier 250: TV image processing IC

300: CRT 350: VCR Y / C IC

400: head amplifier IC 450: video head

500: audio processing IC 550: audio head

600: Y pyrom 650: timer

700: sheathcon 750: control head

801: start setting button 802: end setting button

803: Repeat count setting button 804: Play button

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment for achieving the above object of the present invention.

1 is a block diagram for explaining a video tape presence and endless repetitive playback method of a VCR of the present invention.

Referring to FIG. 1, the present invention provides a high frequency amplification unit 151 for amplifying a high frequency signal, which is a complex video signal received from an antenna 100, and an input signal and a local oscillation unit amplified from the high frequency amplification unit 151. A tuner unit 150 including a mixing unit 152 for receiving a local oscillation frequency from the 153 and converting it into an intermediate frequency, and a local oscillating unit 153 for supplying a signal for frequency conversion to the mixing unit 152; IF amplifier unit 200 for amplifying the intermediate frequency signal, which is a composite video signal output from the tuner unit 150, and the intermediate frequency signal applied from the IF amplifier unit 200 to process and output to the CRT (300) Meanwhile, the TV image outputs a composite video signal to the VCR Y / C IC 350 to be described later and receives a playback composite video signal from the VCR Y / C IC 350 and outputs the composite video signal to the CRT 300. The processing IC 250 and the composite video signal from the TV image processing IC 250; When applied, the luminance signal is modulated by the FM low carrier, and the color signal is low-pass converted, while the modulated luminance signal and the color signal input from the head amplifier IC 400 connected to the VCR Y / C IC 350 are original. A VCR Y / C IC 350 that applies a playback composite video signal generated by demodulating the signal to the TV image processing IC 250, and a luminance signal and a color signal that are modulated and applied from the VCR Y / C IC 350. After amplifying the signal to be recorded on the tape through the video head 450, the head amplifier IC 400 for reading and amplifying the signal recorded on the tape through the video head 450 to amplify the demodulated signal. And receiving a voice signal from the VCR Y / C IC 350 so as to be recorded on the tape through the audio head 550, and reading and demodulating the signal recorded on the tape through the audio head 550. An audio processing IC (500) It is connected to the VCR Y / C IC 350, and recognizes the control pulse recorded in the control track of the tape through the control head 750, and controls the VCR Y / C IC 350 during playback. The starter button 801, the end setting button 802, and the repetition number setting button 803, which generate the start setting signal, the end setting signal, and the repetition number setting signal, respectively by the user's button operation, are provided. It is connected to the remote controller 800 and the tuner unit 150, the repetition frequency signal generated from the remote controller 800 is stored in the EPIROM 600, while the TV image processing IC during the tape playback It consists of a timer 650 that controls 250.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation according to an embodiment of the present invention.

First, among the methods for receiving a broadcast signal using the tuner unit 150, the main method currently used is a FS (FREQUENCY SYNTHESIZE) method, and the FS method uses a timer to advance a reference frequency corresponding to each channel in advance. When the user tunes in a broadcast channel, the tuner 150 receives the broadcast by transmitting the reference frequency of the channel as data. Here, the components of the tuner unit 150 will be described in more detail. The high frequency signal received from the antenna 100 is characterized by the characteristic impedance of the feeder FEEDER through an input circuit (not shown) of the tuner unit 150. The input impedance of the high frequency amplifying unit 151 is matched and output to the high frequency amplifying unit 151. The high frequency amplifying unit 151 increases the gain of the received high frequency signal, improves selectivity, and prevents image interference. do. In addition, the S / N ratio is improved, and the local oscillation frequency output from the local oscillator 153 is prevented from being radiated to the antenna 100 to affect other receivers. In addition, the signal amplified by the high frequency amplifier 151 and the frequency output from the local oscillator 153 are input to the mixer 152, the mixer 152 mixes the high frequency signal and the local oscillation frequency To generate an intermediate frequency signal corresponding to the difference between the two frequencies and output it to the IF amplifier 200. Therefore, the intermediate frequency signal, which is a composite video signal amplified and output by the IF amplifier 200, is displayed on the CRT 300 after the TV image processing IC 250 processes.

Here, after the user inserts the video tape into the VCR deck (not shown) in order to watch the contents recorded on the video tape instead of watching the broadcast program of the television, the play button 804 provided in the remote controller 800. ), The playback signal generated from the remote controller 800 is applied to the timer 650, and the timer 650 switches the television and the VCR system to the playback mode, The reproduction detection signal is applied.

That is, the ciscon 700 applies a control signal to the VCR Y / C IC 350 to receive the video signal read by the video head 450 through the head amplifier IC 400, and then performs the FM conversion luminance signal. And demodulating the low-converted color signal into the original luminance signal and the color signal, and receiving the audio signal read by the audio head 550 through the audio processing IC 500 and demodulating the original audio signal into the original audio signal. A back composite video signal is generated and output to the TV image processing IC 250 to be output through the CRT 300.

While the contents recorded on the videotape are being reproduced through the above process, when the start setting button 801 and the end setting button 802 are manipulated so that only a certain portion of the contents is repeatedly played, the detection is detected. The timer 650 applies a start setting detection signal and an end setting detection signal to the sheath cone 700.

That is, the ciscon 700 receives a start setting detection signal and an end setting detection signal from a timer 650, and then corresponds to a video corresponding to a time point at which the start setting button 801 and the end setting button 802 are operated. The control pulses in the control track of the tape are read through the control head 750 to recognize them as start and end points, while counting the number of control pulses between the start and end points.

In addition, the repetition frequency setting button 803 is operated to set the number of times the contents between the start point and the end point are repeated, and the repetition frequency setting button 803 is operated to constitute a combination of numbers except '0'. When the number of repetitions is input, while the finite number of repetitions is input, when '0' is input, the repetition count is infinitely repeated while the play mode of the VCR is continued. ).

After the finite or infinite repetition number is set as described above, the sheath cone 700 counts the control pulse between the start control pulse recognized as the start point and the end control pulse recognized as the end point while the video tape is being played. When the playback of the video tape passes the end point, the controller goes back up by the number of the counted control pulses and finds the start control pulse so that the finite repeat play is performed if the repeat count is finite, whereas the repeat count is performed. If infinite, infinite repeat playback is performed.

Hereinafter, the operation of the sheath cone 700 in detail as follows.

The ciscon 700 is a part that plays a role of relaying between the user and the VCR set. When the system of the VCR is switched to the play mode from the operation of the play button 804 provided to the remote controller 800 of the user, the VCR Y A control signal is applied to the / C IC 350 so that recording and playback of a video signal are normally performed, and each part constituting the VCR by detecting an electrical signal corresponding to a function key operated by a user operating the remote controller 800. In addition to applying a drive signal to operate the VCR according to a user-operated function, the VCR set operation state is controlled so that the contents recorded on the videotape are not damaged. In addition, the sheath cone 700 controls the AC power supplied through the power cord by a power control signal, drives the loading motor to take out and inserts the tape, and performs an operation. By detecting the state of the corresponding deck (DECK) to drive the loading motor to control the mechanism of the deck. Then, it detects the beginning and the end of the video tape to adjust the progress of the tape, detects the rotation of the reel (not shown) and checks the progress of the video tape, which is generated by the reel sensor (not shown; The system automatically switches to stop mode if the pulse is not detected within a certain period of time and is set using a dew sensor (not shown) to prevent damage to the running video tape due to high humidity in the VCR set. When the humidity inside the sensor gets higher than the specified value, the system automatically switches to the stop mode for the protection of the video tape, and when an abnormality occurs by detecting a 30 MHz signal generated by the drum (not shown; DRUM) rotating at a constant speed Sensing functions such as switching the system to stop mode automatically.

FIG. 2 is a flowchart showing a method of repeating and playing a video tape of a VCR according to the present invention, wherein a power-on switching step (S10) in which the power of the VCR is switched on in order to reproduce the contents recorded on the video tape, After the power-on switching step S10, a video output step S20 in which contents recorded on a video tape are output, a start point setting step S30 at which a starting point is set in the video output step S20, and the starting point setting step ( After the start point is set in step S30, a control signal counting step S40 in which the number of control pulses is counted, and an end point setting step S50 in which an end point is set while the control pulse is counted in the control signal counting step S40; After the end point setting step (S50), it is determined how the repetition frequency is set, the repetition frequency setting determination step (S60), and the repetition frequency setting determination step (S60) finite repetition number The finite number step (S70) is determined that the number is set, the finite repetition playback step (S80) is performed as much as the finite number of times determined in the finite number step (S70), and the finite number in the iteration number setting determination step (S60) It is determined that the infinite repetition, not the number of repetitions is set, and consists of an infinite repetitive reproducing step (S90) in which infinite repetitive reproduction is performed.

Hereinafter, the operation after the starting point setting step S30 will be described in detail.

First, while the contents recorded on the videotape are reproduced on the CRT 300 of the television, the user operates the start setting button 801 provided in the remote controller 800 so that only the contents of a specific section are repeatedly reproduced. The timer 650 for detecting this applies a start detection signal to the sheath cone 700, which is controlled by the control head 750 in contact with the control track of the video tape. The control pulse in the control track corresponding to the start time of the start setting button 801 is recognized as a start point.

As described above, the start point is recognized and the playback of the video tape is continued, and the sheath cone 700 counts the number of control pulses that appear continuously from the control pulse recognized as the start point until the end point is designated.

At this time, when the end setting button 802 is operated by the user to receive the end setting detection signal from the timer 650, the sheath 700 stops counting the control pulse and at the same time, the end setting button 802. The control pulse corresponding to this manipulated time point is recognized as an end point.

After the start point and the end point of the content to be repeatedly played through the above-described process is set, when the repeat count setting button 803 is operated to input a numeric signal representing a repeat count composed of a combination of numbers other than '0', The timer 650 for detecting this stores the numerical signal in the ypyrom 600, and then applies a finite repetition number detection signal set in the sheath cone 700, and the sheath cone 700 recognizes the end point. The control pulse indicating the starting point is found by going back as many as the number of control pulses counted backward from the control pulses, and then repeatedly playing the set finite number of repetitions.

On the other hand, when the repetition frequency setting button 803 is operated and '0' is input, it indicates infinite repetitive reproduction, and the repetitive reproducing operation by the scissor 700 continues while the regeneration mode of the VCR is continued. Done.

As described above, the present invention allows the control pulse at the time when the start setting button and the end setting button are operated to be recognized as a start point and an end point while the contents recorded on the videotape are reproduced, and between the start point and the end point. After the control count is counted, if there is an infinite number of repetitive playback counts, the control pulse indicating the starting point is found after going back as many as the number of control pulses counted backward from the control pulse automatically recognized as the end point. By repeating a finite number of times or repeating infinitely, there is an effect of improving quality through repetitive learning.

Claims (4)

In a VCR that can repeatedly play content recorded on a videotape, A starting point setting step (S30) in which a starting point of the repeat playback is set; A control signal counting step (S40) in which the number of control pulses is counted after the starting point is set in the starting point setting step (S30), An end point setting step (S50) in which an end point is set while a control pulse is counted in the control signal counting step (S40), and After the end point setting step (S50) is set to a finite repeat count is set to a finite repeat playback step (S80) and the infinite repeat playback step (S90) is determined that the infinite repeat is set to the infinite repeat is set. VCR video tape play and endless loop playback method. The method of claim 1, wherein the start point setting step (S30) and the end point setting step (S50) are performed after the start setting button 801 and the end setting button 802 of the remote controller 800 are operated. The start setting button 801 and the end setting button 802 are received through the control head 750 in contact with the control track of the video tape by receiving the start setting detection signal and the end setting detection signal from the timer 650. And a repeating playback method of a video tape of a VCR, characterized in that it is made by a scissor 700 for recognizing control pulses in a control track corresponding to an operated time point as starting and ending points. The method of claim 1, wherein the finite repeat play step (S80) and the infinite repeat play step (S90) comprises a combination of numbers other than '0' from the repeat count setting button 803 provided in the remote controller 800. When a numeric signal indicating a repetition number is input, a control pulse indicating a starting point is generated by going back as many as the number of control pulses counted backward from the control pulse recognized as the end point by receiving the finite repetition count detection signal of the timer 650 detecting the repetition number. After retrieving and repeating the repetition by the set finite repetition number, when '0' is input from the repetition number setting button 803, the endless loop count detection signal of the timer 650 is similarly recognized as an end point. Finds the control pulse that represents the starting point, going back to the number of control pulses , A VCR, characterized in that formed by the cone system 700 to continue to repeat for an extended period of the reproduction mode of the VCR video tape wire and the infinite repeat method. [4] The VCR of claim 2 or 3, further comprising: a remote controller 800 having a start setting means, an end setting means, a repetition number setting means, and a reproducing means to remotely control the VCR. Video tape playout infinite loop.