KR0164320B1 - High speed reproducing control device for vtr and the method thereof - Google Patents

Abstract

The present invention relates to a high speed playback control apparatus for video tape and a method thereof, wherein the code signal detecting means (24, 26) detects a code data signal from a broadcast signal to be recorded from the recording signal processing means (10, 12). And a control signal for recording a control signal for the recording section of the video tape 18 for recording the broadcast signal from which the code data signal is detected, and for reading the control signal recorded on the video tape 18. The video tape 18 under the servo control of the servo drive means 30 which performs a servo operation for normal reproduction or high speed reproduction when the recording / reading means 28 and the reproduction function for the video tape 18 are executed. Drive motor means (32, 34, 36) for performing a driving operation for normal reproduction or high speed reproduction of the control unit; and the control signal is generated for the recording section in which the code data signal is detected in the recording mode. And the control signal recording / reading unit 28 in accordance with the selective playback function setting of the function setting means 2 in the playback mode for the video tape 18. And control means (42) for controlling the servo drive means (30) so as to perform high speed reproduction with respect to the recording section of the control signal read out through; When a recording mode for a broadcast signal according to a broadcast program of a predetermined channel is set, the corresponding broadcast signal is tuned and recorded on the video tape 18, and control is performed for a recording section in which a code data signal superimposed on the broadcast signal is detected. A first step of recording a signal, and a second step of reproducing the information recorded in the reproducing mode for the video tape 18 at a normal speed while reproducing the recording section at which the control signal is detected at a high speed; Characterized in that made.

Description

High speed playback control device of video tape and its method

1 is a block diagram showing a high speed playback control apparatus of a video tape according to the present invention;

2 is a recording format diagram showing a control track of a video tape on which control signals for high speed playback are recorded according to an embodiment of the present invention.

3 is a flowchart for explaining a recording operation of a control signal when recording a broadcast program according to an embodiment of the present invention.

4 is a flowchart for explaining a high speed reproducing operation in accordance with detection of a control signal when reproducing recorded information according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: Function setting part 4: Tuner

6: IF module 8: Mode switch unit

10: recording signal processor 12: recording signal amplifier

14: switch unit 16: signal recording / reading unit

18: video tape 20: playback signal amplifier

22: playback signal processing unit 24: synchronization separation unit

26: code signal extraction unit 28: control signal recording / reading unit

30: servo drive unit 32: drum motor

34: reel motor 36: capstan motor

38: video output unit 40: audio output unit

The present invention relates to a high speed playback control apparatus and method for videotape, and more particularly, high speed playback can be performed on recording information other than the broadcast program when recording a videotape on which a predetermined broadcast program of a television broadcast is recorded. The present invention relates to a high speed playback control apparatus for a video tape and a method thereof.

In a video apparatus capable of playing and recording such as a video cassette tape recorder (VCR), which is currently used, video information recorded on an information recording medium such as video cassette tape or the like is read through a magnetic head reading operation. It reads out and outputs an image on a CRT of a television as a video signal.

In addition, in the case where a general recording operation is to be performed through the video equipment, the television broadcasting signal of a selected television broadcasting program of a predetermined channel tuned through the television tuner is input, and then the image signal processing and audio signal processing are performed. The video signal and audio signal are recorded on the information recording surface of the information recording medium through the operation.

In particular, in a video device equipped with such a recording function, when a user inputs a recording schedule such as a broadcast date, a broadcast time, and a channel number of a predetermined television broadcast program, the preset broadcast date and broadcast time have elapsed. As a result, a reservation recording function is added so that a television broadcast program of a selected channel is automatically recorded on an information recording medium such as video cassette data, so that the recording function can be performed even in the absence of the user.

However, in such a video device, when a predetermined broadcast program of a television broadcast is recorded by a general recording function or a reservation recording function, broadcast contents other than a regular broadcast such as a commercial program can be inserted and recorded, for example, a sports program. In addition, because the scheduled recording time does not match the actual broadcasting time of the broadcasting program, broadcasting contents other than this program may be recorded, so that the recording contents irrelevant to the broadcasting program should be watched when the recorded contents are played back. There is a ham.

Accordingly, the present invention has been made in view of the above-mentioned inconvenience, and when a predetermined broadcast program of a television broadcast is recorded, when the transmission data superimposed on a broadcast signal according to the broadcast content other than the broadcast program is detected, the control signal is video. It is an object of the present invention to provide a high-speed playback control apparatus for a videotape that enables high-speed playback in the detection section of the control signal at the time of reproduction of the videotape by recording the tape on the recording surface.

In addition, another object of the present invention is to record a control signal on the recording surface of the video tape when detecting the transmission data superimposed on the broadcast signal according to the contents of the broadcast other than the present program when recording a predetermined broadcast program of the television broadcast The present invention provides a high speed playback control method of a video tape that enables high speed playback in the detection section of the control signal when the video tape is played back.

In order to achieve the above object, according to the high-speed playback control apparatus for a videotape according to the present invention, a tuning means for tuning television broadcasting of a predetermined channel, and receiving the tuned broadcasting signal through a mode switch unit to process it as a recording signal. Recording signal processing means, signal recording / reading means for recording the broadcast signal on videotape or reading recorded video / audio signals, playback signal processing means for processing the read video / audio signal as a playback signal, and being reproduced A video tape recorder having video / audio output means for outputting a video / audio signal to an external video device. Function setting means for keying a sorting / playback function for recording contents other than a broadcast program to be recorded at the beginning of playback of the videotape; and a code data signal from a broadcast signal to be recorded from the record signal processing means. Code signal detection means for detecting, control signal recording for the recording section of the video tape for recording the broadcast signal from which the code data signal is detected, and control signal recording / reading the control signal recorded on the video tape. Reading means, servo drive means for performing a normal operation or a servo operation for high speed reproduction upon execution of a reproduction function for the video tape, driving for general reproduction or high speed reproduction of the video tape under servo control of the servo drive means; A drive motor means for performing an operation and said nose in the recording mode of a broadcast signal; The control signal is generated from the control signal recording / reading means for the recording section in which the code data signal is detected by the de-signal detecting means so as to be recorded on the video tape, and the function setting is performed in the playback mode for the video tape. High speed playback control of the video tape comprising control means for controlling the servo drive means to perform high speed playback for the recording section of the control signal read out through the control signal recording / reading unit according to the setting of the selective playback function of the means. Provide the device.

Further, in order to achieve the above object, according to the high-speed playback control method of a videotape according to the present invention, the tuning means for tuning the television broadcasting of a predetermined channel and the tuned broadcast signal are supplied as a recording signal. Recording signal processing means for processing, signal recording / reading means for recording the broadcast signal on videotape or reading recorded video / audio signals, playback signal processing means for processing the read video / audio signal as a playback signal, the A video tape recorder having video / audio output means for outputting a reproduced video / audio signal to an external video device. When a recording mode for a broadcast signal according to a broadcast program of a predetermined channel is set, the corresponding broadcast signal is tuned and recorded on the video tape, and a control signal is recorded for a recording section in which a code data signal superimposed on the broadcast signal is detected. And a second step of reproducing the information recorded in the reproducing mode for the video tape at a normal speed while reproducing the recording section at which the control signal is detected at a high speed.

According to the present invention made as described above, in a video tape recorder for recording or reproducing predetermined video / audio information on a video tape, the broadcast signal is recorded when a broadcast signal corresponding to a broadcast program of a predetermined channel is recorded in a recording mode. A control signal is generated and recorded for a recording section in which code data with information indicating that broadcasting contents other than the corresponding broadcast program is transmitted is detected. In the playback mode for the video tape, the previously recorded control signal is read out. High-speed playback is performed for the recording section.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a high speed playback control apparatus of a video tape according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes a remote control for remote control or a matrix button unit provided in a predetermined portion of a control panel of a main body. A function setting unit for keying a mode key setting, a key setting of a reproducing mode, and a selective reproducing function for selective high-speed reproduction of the playback section of the video tape 18, wherein the sorting setting function sets the selective reproducing function. It comprises a playback key 2A.

In addition, reference numeral 4 denotes a tuner for tuning a broadcast signal of a predetermined channel to be recorded in the recording mode, and 6 denotes an IF module for separating intermediate video and audio signals of the tuned broadcast signal, respectively. Indicates.

Reference numeral 8 denotes a mode switch section for performing mode switching operations in accordance with the recording mode or the playback mode.

Reference numeral 10 denotes a recording signal processing unit for signal-modulating and recording a video / audio signal of the broadcast signal tuned through the mode switch unit 8, and 12 denotes the signal-processed video / audio signal. Denotes a recording signal amplifier for amplifying to a recordable amplification level.

In addition, the reference numeral 14 allows the video / audio signal according to the recording function to be recorded on the video tape 18, and switches so that the video / audio signal reproduced by the video tape 18 can be reproduced according to the playback function. 16 shows at least four magnetic heads installed in a drum (not shown) rotated by a drum motor 32 to be described later, and amplifies the recording signal through the switching switch unit 14. A signal recording / reading section for recording the video / audio signal corresponding to the broadcast signal from the section 12 on the magnetic recording surface of the video tape 18 and reading out the recording information recorded on the video tape 18 .

Reference numeral 20 denotes a reproduction signal for amplifying the video / audio signal from the video tape 18 read by the signal recording / reading unit 16 through the switching switch unit 14 to a reproducible amplification level. An amplification unit is shown, and 22 denotes a reproduction signal processing unit for reproducing signal processing of the amplified video / audio signal.

Reference numeral 24 denotes a synchronization separator for separating a synchronization signal from a video signal of a broadcast signal that is signal processed for recording from the recording signal processor 10, and 26 denotes a vertical retrace period of the separated synchronization signal. A code signal extracting unit which extracts code data signals that are superimposed and transmitted is shown.

Here, the code data signal is preferably made of digital data indicating a transmission state of broadcast contents other than a broadcast program to be recorded, such as commercial broadcasting.

Further, reference numeral 28 denotes a control signal such as, for example, a Vis signal, under the control of the control unit 42 described later, recorded on the video tape 18, and the control recorded on the video tape 18. Indicates a control signal recording / reading unit for reading a signal.

In the video tape 18, as illustrated in FIG. 2, an image signal is recorded in the image recording area V in units of frames according to a predetermined azimuth angle, and the first audio recording area 01 is used. Audio signal of the other channel is recorded in the second audio recording area (02), and to the control signal recording / reading unit (28) in the control track (C). The control signal from can be recorded.

Reference numeral 30 denotes a servo driver which is responsible for servo control for the recording function of the video tape 18, the normal playback function and the high speed playback function under the control of the controller 42, which will be described later, and 32 denotes the servo driver 30. Denotes a drum motor for rotating a drum (not shown) provided with the signal recording / reading unit 16 under servo control, and 34 denotes a drum motor for controlling the video tape 18 under servo control of the servo driver 30. A reel motor for traveling the recording surface is shown, and 36 represents a capstan motor for allowing the recording surface of the video tape 18 to travel while keeping the tracking state under the servo control of the servo driver 30.

Reference numeral 38 denotes an image output unit which outputs an image signal to be reproduced through the mode switch unit 8 to an external image reproducing apparatus such as a television, and 40 denotes an audio signal through the mode switch unit 8. The audio output unit outputs a signal to an external video player.

Reference numeral 42 denotes a control unit for controlling the overall functional operation of the video tape recorder, and the channel to be recorded in the tuner 4 in the recording mode by the key setting of the function setting unit 2. The video / audio signal according to the broadcast program of the predetermined channel can be recorded through the signal recording / reading unit 16 under the driving of the video tape 18 by generating the tuning data for the tuning of the control unit and controlling the servo driver 30. In addition, the control signal generated by the control signal recording / reading unit 28 is recorded so as to record a recording section in which the code data signal is extracted by the code signal extracting unit 26.

In addition, the control section 42 controls the video tape 18 under the control of the servo drive section 30 when the selective playback key 2A is keyed in the playback mode by the key setting of the function setting section 2. The recording information recorded in the above) can be reproduced at a normal speed, and the servo driver 30 can be reproduced at a high speed for the recording section where the control signal is read by the control signal recording / reading unit 28. Will be controlled.

Next, the recording operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG.

First, when the recording function for the broadcast program of the predetermined channel is set by the key setting of the function setting unit 2 in step 50, the flow proceeds to step 51 where the control section 42 sets the recording mode to select the channel for the preset channel. The channel data is supplied to the tuner 4 so that the broadcast signal of the corresponding channel is tuned, and the mode switch 8 is switched according to the recording mode. Then, the servo driver 30 is controlled to control the drum motor ( 32 causes the drum (not shown) to which the signal recording / reading unit 16 is installed to rotate, the reel motor 34 to drive the recording surface of the video tape 18, and the capstan motor 36 By maintaining the tracking, the video / audio signal corresponding to the tuned channel of the predetermined channel is recorded on the video tape 18 by the signal recording / reading unit 16. FIG.

Meanwhile, the sync separator 24 separates the sync signal from the video signal of the broadcast signal, and the code signal extractor 26 broadcasts the broadcast content other than the broadcast program of the corresponding recording target from the separated sync signal, that is, the advertisement. And extracting a code data signal having information indicating that a broadcast is transmitted.

In that state, the process proceeds to step 52, and the control section 42 determines whether the code signal extraction section 26 is extracting the code data signal.

As a result of the determination in step 52, if it is determined that the code data signal is being extracted by the code signal extracting unit 26, the control proceeds to step 53 and a control signal is generated in the control signal recording / reading unit 28 to generate the video. The control track C of the tape 18 can be recorded, but only the signal section from which the code data signal is extracted by the code signal extraction unit 26 can be recorded.

However, if the code signal extracting unit 26 determines that the code data signal is not being extracted, the control proceeds to step 54 where the function setting unit 2 stops the recording function. It is determined whether or not setting is performed.

As a result of the determination in step 54, if it is determined that the function setting unit 2 is in the key setting operation to stop the recording function, the control proceeds to step 55 to stop the servo control operation of the servo driver 30. In addition, the tuning operation of the tuner 4 is stopped.

Next, the reproduction operation of the present invention will be described in detail with reference to the flowchart of FIG. 4 based on the operation according to the flowchart of FIG.

First, in step 56, if the key setting is performed by reproducing the recording information recorded on the video tape 18 by the function setting unit 2, the flow advances to step 57, and the control section 42 sets the playback mode. Then, the mode switching unit 8 is switched to the state of the regeneration mode, and the servo drive unit 30 is driven to allow the drum motor 32 to rotate the drum, and the reel motor 34 and the capstan motor 36. The video signal from the video tape 18 read by the signal recording / reading unit 16 by allowing the cracking operation to be performed while driving the video tape 18 at the traveling speed according to the normal playback function. Will be played back.

On the other hand, the control signal recording / reading unit 28 is to read the control signal recorded on the control track (C) of the video tape 18.

In this state, the flow advances to step 58 to determine whether or not the sorting / playback key 2A is being keyed so that the recording information of the function setting section 2 can be played back at the selective playback speed.

As a result of the determination in step 58, when it is determined that the selective playback key 2A of the function setting section 2 is being key operated, the control proceeds to step 59 to control the servo driver 30 to control the video tape 18. The recorded information from) can be continuously played at normal speed.

However, if it is determined in step 58 that the selective playback key 2A of the function setting unit 2 is being operated, the control proceeds to step 60 and the video signal is recorded in the control signal recording / reading unit 28. It is determined whether or not the control signal is read from the control track (C) in (18).

If the control signal recording / reading unit 28 determines that the control signal is being read, the control proceeds to step 61 in which the control signal is read by controlling the servo driver 30. In addition to changing the driving speed of the drum motor 32 so that the recording information can be reproduced at high speed only in the recording section, the driving speeds of the reel motor 34 and the capstan motor 36 are varied.

However, if it is determined in step 60 that the control signal recording / reading unit 28 does not read the control signal, then control proceeds to step 62 and the function setting unit 2 stops the playback function. It is determined whether or not the key is being operated.

As a result of the determination in step 62, if it is determined that the function setting section 2 is not performing key setting for stopping the playback function, control proceeds to step 63, whereby the recording information of the video tape 18 is continuously reproduced. The process then proceeds to step 60 above.

However, if it is determined in the step 62 that the function setting unit 2 is performing key setting for stopping the playback function, then the control proceeds to step 64 such that the servo operation of the servo driver 30 is stopped. The playback function is terminated.

According to the above-described invention, the control signal can be recorded in the recording section according to the broadcast contents other than the broadcast program to be recorded in the video tape recorder, so that the control signal is read in the reproducing function. As for the high speed reproduction, the effective reproduction of necessary broadcast programs is possible.

Claims (2)

Tuning means (4,6) for tuning television broadcasting of a predetermined channel; recording signal processing means (10,12) for receiving the tuned broadcast signal through a mode switch unit (8) and processing it as a recording signal; Signal recording / reading means 14 and 16 for recording broadcast signals on the video tape 18 or reading recorded video / audio signals, and playback signal processing means 20 for processing the read video / audio signals as playback signals. 22) A video tape recorder having video / audio output means (38, 40) for outputting the reproduced video / audio signal to an external video device, wherein the video tape (18) is to be recorded at the beginning of playback of the video tape (18). A function setting means (2) for keying a sorting / playback function for recording contents other than a broadcast program, and a code for detecting a code data signal from a broadcast signal serving as a recording target from the recording signal processing means (10, 12) Signal detecting means (24, 26), Control signal recording / reading for recording a control signal for the recording section of the video tape 18 for recording the broadcast signal from which the code data signal is detected, and for reading the control signal recorded on the video tape 18. Means 28, servo drive means 30 which performs a servo operation for normal reproduction or high speed reproduction at the time of execution of the reproduction function for the video tape 18, under servo control of the servo drive means 30; The drive motor means 32, 34, 36 performs a drive operation for the normal reproduction or the high speed reproduction of the video tape 18, and the code signal detection means 24, 26 performs the code in the recording mode of the broadcast signal. The control signal is generated from the control signal recording / reading means 28 for the recording section in which the data signal is detected so as to be recorded on the video tape 18, and the playback mode for the video tape 18 is recorded. The servo drive means 30 is controlled such that high-speed reproduction is performed for the recording section of the control signal read out through the control signal recording / reading unit 28 in accordance with the selective regeneration function setting of the function setting means 2. And a control means (42) for controlling the high speed reproduction of the video tape. Tuning means (4,6) for tuning television broadcasting of a predetermined channel; recording signal processing means (10,12) for receiving the tuned broadcast signal through a mode switch section (8) and processing it as a recording signal; Signal recording / reading means 14 and 16 for recording a signal on the video tape 18 or for reading the recorded video / audio signal, and playback signal processing means 20 for processing the read video / audio signal as a playback signal; 22) A video tape recorder having video / audio output means (38, 40) for outputting the reproduced video / audio signal to an external video device, wherein a recording mode for a broadcast signal according to a broadcast program of a predetermined channel is set. A first step of recording a control signal in a recording section in which a code data signal superimposed on the broadcast signal is detected while the broadcast signal is tuned and recorded on the video tape 18; And a second step of reproducing the information recorded in the playback mode for the tape 18 at a normal speed while reproducing the recording section at which the control signal is detected at a high speed. Way.