KR0141267B1 - Method and apparatus for controlling reproduction in video cassette recorder - Google Patents

Abstract

The present invention relates to a method for controlling playback of a video cassette recorder. The present invention relates to a device for controlling playback of a video cassette recorder, wherein the user stops (stops) or pauses (plays) the video tape during playback of the video tape. When the mode is entered, a certain amount of rewind (REWIND) is automatically performed to start playback so that playback can be performed after checking the pre-play contents, or rewinding a full amount (REWIND) and the amount of the rewinded amount. The present invention relates to a playback control method and apparatus for a video cassette recorder which performs normal speed playback after performing a double speed playback to check a pre-play content and to perform normal playback.

Description

Playback control method of video cassette recorder and apparatus therefor

1 is a block diagram of an apparatus for controlling playback of a video cassette recorder according to the present invention;

2 is a flowchart for explaining an example of a playback control method of a video cassette recorder according to the present invention;

3 is a flowchart for explaining another embodiment of the video cassette recorder playback control method according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: key input unit 12: control unit

14 memory unit 16 clock signal generation unit

18: Playback amount display section 20: Tape drive mechanism

22: signal reading section 24: amplification section,

26: voice signal processor 28: voice amplifier

30: audio output device 32: video signal processing unit

34: video amplifier 36: video output device

The present invention relates to a method and a device for controlling playback of a video cassette recorder, and more particularly, after a user stops (STOP) or pauses (PAUSE) playback of a video tape in a video cassette recorder. The present invention relates to a playback control method and apparatus for a video cassette recorder which starts a playback after a certain amount of rewinding when the PLAY mode is entered again.

As is well known, the videotape applied to the recording of a particular video / audio program and the reproduction of the recorded program using magnetic properties is a reel of a hard case, commonly referred to as a 'video cassette'. Programs recorded on the videotape are recorded sequentially with temporal differences, while reproduction of the videotape usually has its temporal continuity unless a specific position setting is made. This is done according to the recording order of the program.

However, the above-described video tape is extended from a conventional program for viewing a simple video / audio and is, for example, a state in which recording of a program to which a caption function is added is applied. Therefore, a video tape having such a caption function is generally used. When recording the program image and audio, a character corresponding to the audio signal is incorporated at a specific position on the screen, and when the caption function is selected, the character is output as the caption data.

The video tape with caption function for displaying such caption data is gradually expanding its application law. For example, program video / audio is provided so that the caption data can be selectively displayed during language learning using video tape. And by recording the character data can utilize the caption function such that the learning efficiency of the language can be improved.

However, in order to search and play an arbitrary position on a videotape recorded with a program having such a caption function or a videotape recorded with a general program, a repetitive 'rewinding' and / or 'fast' is usually performed to locate a videotape. The repetitive operation of the 'winding' function is required, and thus it is cumbersome to search for a specific position of the recorded program in a chronological order.

In view of this, recently, in the case of recording a program on a videotape, a technique has been proposed to register a 'VISS mark' so that the location search of a recorded program with a time difference is considerably speeded up (approximately 100 times faster). Although it is possible to realize a function for repetitive playback of a specific position using such a 'VISS mark', the VISS mark can be used to search for a position of a video tape and / or to repeatedly play a specific section. Adding a disadvantage is that the videotape playback apparatus becomes expensive.

Accordingly, the present invention has been made in view of the foregoing, and its main object is to reproduce the video tape after the user stops (STOP) or pauses (PAUSE) the playback of the video tape in the video cassette recorder. When you enter the PLAY mode, it automatically performs a certain amount of rewind and then starts playback to check the pre-play contents and then play or rewind a certain amount. The present invention provides a method and a device for controlling playback of a video cassette recorder which performs normal speed playback after performing a double speed playback and then confirms the previous playback contents by normal speed playback.

In order to achieve the above object, according to an exemplary embodiment of the present invention, when the playback mode is set again after the stop or pause mode is set during the playback of the video tape, the current provided from the clock signal generation unit is provided. A playback control method of a video cassette recorder which performs a rewind operation based on the clock count data for the playback amount up to and the clock count data for the rewind amount preset in the memory unit, and then performs normal playback of the video tape. Is provided.

Preferably, the number of clocks generated from the clock signal generation unit is generated in proportion to the running speed (ie, the motor speed) of the video tape, and the execution of the rewinding operation rewinds the clock number data for the playback amount up to now. Rewinding is performed by subtracting the clock number data corresponding to the amount.

According to another preferred embodiment of the present invention in order to achieve the above object, when the playback mode is set again after the stop or pause mode is set during the playback of the video tape, it is provided from the clock signal generator. Performs a rewind operation based on the clock number data of the playback amount up to now and the clock number data of the rewind amount preset in the memory unit, and performs the speed replay as much as the clock number corresponding to the clock number data of the rewind amount. Then, a playback control method of a video cassette recorder is provided so that normal playback of a video tape is performed.

Preferably, the number of clocks generated from the clock signal generation unit is generated in proportion to the running speed of the tape (that is, the motor speed), and the row of the rewinding operation is rewinded from the number of clock data for the playback amount up to now. Rewinding is performed while subtracting as much as the number of clock data corresponding to. The execution of the double speed regeneration causes the double speed regeneration to be executed while adding from the number of clocks at the completion of the rewind to the number of clocks at the stop or pause.

The apparatus for controlling playback of a video cassette recorder according to an embodiment of the present invention includes a signal reading means for reading a video / audio signal recorded on a video tape by the head, including a head, and a signal reading means. Tape driving mechanism for driving the video tape when reading the video / audio signal by means of video, audio / video signal processing means for processing the read video / audio signal amplified and applied by an amplifying means as an output signal, and the video / audio signal A video tape reproducing apparatus comprising a video / audio amplifying means for amplifying a video / audio signal processed by a signal processing means to be reproduced by a video / audio output means, the video tape reproducing apparatus comprising: for inputting an overall control command of a video cassette recorder; A key input means having function keys and a key input for a control command of the key input means Control means for collectively controlling the entire operation of the cassette recorder, memory means for storing the predetermined number of clock data for the rewind amount that is a reference when performing the rewind according to the control of the control means, the clock according to the control of the control means And a reproduction amount display means for displaying a reproduction amount on the basis of the clock signal generated by the clock signal generation means under control of the control means.

The clock signal generating means generates a clock signal in proportion to the running speed of the tape according to the driving of the tape driving mechanism under the control of the control means, and the clock number data of the rewind amount is preset in the memory means. It is in memory.

Further, the control means counts the clock data generated from the clock signal generating means as the video tape travels, and applies the counted clock number data signal to the playback amount display means to drive the video tape running amount to the playback amount display means. The number of clocks is controlled to be displayed in the form of subtraction / addition. When a stop or pause control signal is input through the key input means and the playback control signal is input again, the signal is converted into a rewind control signal. The tape drive mechanism is controlled to recognize and rewind as much as the number of clock data of the rewind amount previously stored in the memory means, and to enter the playback operation again.

Hereinafter, a method and apparatus for controlling playback of a video cassette recorder according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an apparatus for controlling playback of a video cassette recorder according to the present invention. In FIG. 10, reference numeral 10 denotes various kinds of functions (for example, 'play') applied when playing a tape in a video tape recorder. , 'STOP', 'REW', 'F / F', 'REC', 'PAUSE', 'Speed Mode', or 'EJECT', etc. For example, a key input unit comprising a remote controller or a control panel provided in front of the videotape reproducing apparatus is provided.

12 is a controller in charge of controlling to perform a function for the video tape set by the key input unit 10. According to the present invention, the control unit 12 is a clock signal generation unit according to the driving of the video tape ( 16) Count the clock data generated from the clock data, and apply the counted clock number data signal to the playback amount display section 18 below, whereby the number of clocks corresponding to the traveling amount of the video tape is added to the playback amount display section 18. If a stop or pause control signal is inputted through the key input unit 10 during playback of the video tape and a playback control signal is input again, the signal is recognized as a rewind control signal and the following memory unit 14 is displayed. The tape drive mechanism 20 is configured to rewind the data by the number of clocks of the rewind amount previously stored in the memory and enter the playback operation again. To control.

14 denotes a memory unit in which clock number data of a rewind amount, which is a reference when performing rewinding under the control of the control unit 12, is preset and stored, and 16 indicates a clock signal generation unit under control of the control unit 12. 16 generates a clock signal in proportion to the running speed of the tape according to the driving of the tape driving mechanism 20 under the control of the controller 12.

18 denotes a reproduction amount display unit for displaying a reproduction amount based on the clock signal generated by the clock signal generation unit 16 under the control of the control unit 12. FIG.

In the figure, reference numeral 20 denotes a tape driving mechanism that is controlled by the control unit 12 and is responsible for loading / unloading, or playing, stopping, rewinding, winding, recording, pausing, and discharging the video tape. 22 is a signal reading section including at least two heads (not shown) for electrically contacting a video tape controlled by the tape driving mechanism 20 to read a signal recorded on the video tape. 24 denotes an amplifying unit for amplifying the video / audio signal of the video tape read out by the signal reading unit 22 at a constant amplification rate.

26 denotes a voice signal processor for reproducing a voice signal from the video tape amplified by the amplifier 24, and 28 denotes a speaker by amplifying the voice signal processed by the voice signal processor 26. A voice width portion provided to the audio output device 30 for reproduction.

32 denotes a video signal processor for reproducing the video signal from the video tape amplified by the amplifier 24, and 34 denotes a CRT apparatus by amplifying the video signal processed by the video signal processor 32. An image amplification unit is provided to the configured image output device 36 to be reproduced.

Next, the normal playback control for the videotape executed in the above configuration will be described.

First, when a video tape is loaded into the video tape recorder, the control unit 12 controls the tape driving mechanism 20 and controls the video tape to be loaded at the correct position. When a state control signal applied from (10), that is, a 'rewind' (REW) or 'rewind (F / F)' control signal is input, the control unit 12 controls the tape driving mechanism 20 to, for example, stop. The video tape is rewound or rewound until a subsequent function control input such as (STOP) 'is applied.

In addition, when an input of 'play' is provided from the key input unit 10, the control unit 12 controls the tape driving mechanism 20 to allow the video tape to run at a normal speed. The head of (22) is controlled so that the signal can be read from the video tape, and the video / audio signal read out from the signal reading section 22 is amplified by the amplifying section 24, followed by the audio signal processing section 26. And the video signal processor 26. Accordingly, the voice new hole processing section 26 reproduces the voice signal read from the video tape based on the input of a specific control signal such as volume or voice surround, and the processed voice signal is amplified by the voice amplifier 28. Amplified through the audio output device 30 and then reproduced through the audio output device 30. The video signal processor 32 processes the video signal read from the video tape as a signal for screen output, amplifies it in the video amplifier 34, and then outputs it to the video output device 36 by the CRT device. do.

When the playback or rewinding / rewinding is performed on the videotape, under the control of the control unit 12, the clock count data relating to the replaying, rewinding / rewinding of the videotape is performed. 16, and the clock number data is displayed on the reproduction amount marking section 18 in a decremented / decremented manner.

2 is a flowchart for explaining a preferred embodiment of a method for controlling playback of a video cassette recorder according to the present invention, in which step S1 loads a video tape into the tape driving mechanism 20 and then inputs the key input unit 10. FIG. A video tape is played by setting the PLAY key, and step S2 is a mode of STOP or PAUSE through the key input unit 10 during playback of the video tape as in step S1. Step S3 is a step of determining whether the PLAY mode is set again when it is determined in step S2 that the STOP or PAUSE mode is set. If the playback mode is not set in S3 and a mode of another function is set, the corresponding function is performed as in step S4, and step S5 is stopped or stopped in step S2. If it is determined that the pause mode has been established, and the playback mode is determined in step S3, the signal is recognized as a rewind signal, rewinded by a predetermined amount, and the video tape is entered into the normal playback mode again to resume the playback of the video tape. In the step S5, execution of the rewind operation is performed for the rewind amount preset in the clock count generator and the memory unit 14 for the amount of reproduction from the clock signal generation unit 16 to the present playback amount. The rewind operation is performed by subtracting the clock count data corresponding to the rewind amount from the clock count data for the reproduction amount up to now based on the clock count data.

3 is a flowchart for explaining another embodiment of a method for controlling playback of a video cassette recorder according to the present invention, in which step N1 loads a video tape into a tape driving mechanism 20 and then inputs the key input unit 10. A video tape is played back by setting the PLAY key, and step N2 is a mode of STOP or PAUSE via the key input unit 10 during playback of the video tape as in step N1. Step N3 is a step of determining whether a PLAY mode is set again when it is determined in step N2 that the STOP or PAUSE mode is set. If the playback mode is not set in N3 and a mode of another function is set, the corresponding function is performed as in step N4, and step N5 is stopped or paused in step N2. If it is determined that the delay mode has been established and the playback mode is set in step N3, the signal is recognized as a rewind signal, and the signal is rewound by a predetermined amount. In step N5, execution of the rewind operation is performed to the clock signal generator. The number of rewinds in the number of clocks for the playback amount up to now based on the clock number data for the playback amount up to now provided from (16) and the clock number data for the rewind amount preset in the memory unit 14 The rewind operation is performed by subtracting as much as the number of clock data. Further, step N6 performs double speed playback by the number of clocks corresponding to the clock number data for the amount of rewinding performed in N5 to the position of the video tape stopped or paused in step N2 after the rewinding operation is completed in the trick N5. In this case, the video tape is replayed to enter the normal playback mode of the video tape.

According to the method and apparatus for controlling playback of a video cassette recorder according to the present invention as described above in detail, a user may stop (STOP) or pause (PAUSE) playback of the video tape during playback of the video tape in the video cassette recorder. When the player enters the PLAY mode again, the program automatically performs a certain amount of rewind, and then starts the playback to check the contents of the previous play or to play a certain amount of the rewind. In this case, the playback of the videotape can be performed by performing the speed replay as much as the rewind amount and then starting the normal replay to confirm the pre-play content and replay the normal replay.

Claims (11)

When the stop or pause mode is set during the playback of the video tape, and the refresh mode is set again, the clock number data and the memory means for the present playback amount provided from the clock signal generation means are preset. A playback control method of a video cassette recorder for performing a normal playback of a video tape after performing a rewind operation based on clock count data for a rewind amount. The method of claim 1, wherein the number of clocks generated from the clock signal generating means is generated in proportion to the traveling speed of the video tape. The method of claim 1, wherein the rewinding operation is performed by rewinding by subtracting the clock number data corresponding to the rewinding amount from the clock number data of the present playback amount. . If the playback mode is set again after the stop or pause mode is set while the video tape is being played, the number of clock data and the rewinding preset in the memory means for the present playback amount provided from the clock signal generating means are set. A playback control method of a video cassette recorder which performs a rewind operation based on the number of clock data for a quantity, performs a double speed playback for the number of clocks corresponding to the number of clock data for the amount of rewind, and then performs normal playback of the video tape. . 5. The playback control method of a video cassette recorder according to claim 4, wherein the number of clocks generated from said clock signal generating means is generated in proportion to the traveling speed of the tape. 5. The playback of the video cassette recorder according to claim 4, wherein the execution of the rewind operation is performed by rewinding by subtracting the clock number data corresponding to the rewind amount from the clock number data for the playback amount up to now. Control method. 5. The playback control method of a video cassette recorder according to claim 4, wherein the double speed playback is executed by adding the clock speed data at the completion of rewinding to the clock number data at the stop or pause. A signal reading means 22 for reading the video / audio signal recorded on the videotape by the head, including the head, and a tape for driving the video tape when the video / audio signal is read by the signal reading means 22. Video / audio signal processing means (32, 26) for processing the read video / audio signal amplified and applied by the driving mechanism (20), amplification means (24) as an output signal, and the video / audio signal processing means A video tape reproducing apparatus comprising video / audio amplifying means (34,28) for amplifying the video / audio signal processed by (32, 26) to be reproduced by video / audio output means (36, 30). And a key input means (10) having function keys for inputting an overall control command of the video cassette recorder, and receiving the key input for the control command of the key input means (10) to overall control of the video cassette recorder. Under control Memory means 14, the control means of the control means 12, the clock means data for the amount of rewind as a reference when performing the rewind according to the control of the control means 12, the control means 12 A reproduction amount for displaying the reproduction amount on the basis of the clock signal generation means 16 for generating a clock signal according to the control signal and the clock signal generated by the clock signal generation means 16 under the control of the control means 12; And a display means (18). A playback control apparatus for a video cassette recorder characterized by the above-mentioned. 9. The clock signal generating means (16) according to claim 8, characterized in that the clock signal generating means (16) generates a clock signal proportional to the running speed of the tape according to the driving of the tape driving mechanism (20) under the control of the control means (12). Playback control apparatus for video cassette recorder. 10. The apparatus for controlling playback of a video cassette recorder according to claim 8, wherein said memory means (14) has a predetermined number of clock data corresponding to a rewind amount. 10. The apparatus according to claim 8, wherein said control means (12) counts clock data generated from clock signal generation means (16) as the video tape travels, and transmits the counted clock number data signal to reproduction amount display means (18). Is applied to the reproduction amount display means 18 so that the number of clocks corresponding to the running amount of the video tape is displayed in the form of subtraction / addition, and during stop of playback of the video tape through the key input means 10. When the control signal is input and the regeneration control signal is input again, the signal is recognized as a rewind control signal, rewinded by the number of clock data for the rewind amount preset in the memory means 14, and then enters the regeneration operation again. And a tape drive mechanism (20) for controlling playback of a video cassette recorder.