KR0145581B1 - Method for controlling mode converting for composition type video reproducing system - Google Patents

Abstract

The present invention detects a loading state of a video tape or a video disc in a hybrid video playback system in which a video tape recorder, a video disc player, and a television are mixed so that the corresponding video / audio playback mode is automatically switched. Provided is a mode switching control method of a composite video playback system in which playback operation on a video tape or video disc is automatically performed.

Accordingly, the present invention provides a composite video reproduction system in which video tape reproducing means, video disc reproducing means, and television are mixed; detecting a loading state of a video tape or a video disc while the operating power is on; Or when the loading state of the video disc is detected, switching the mode to the first video mode for playing the video disc or the second video mode for playing the video tape, and causing the mode switching state to be displayed on the screen. And performing a playback function on the recorded information of the videotape or video disc, and switching the mode to the television mode when the playback of the playback function is completed.

Description

All Change Control Method of Complex Video Playback System

1 is a block diagram showing a hybrid video playback system for explaining the method of the present invention;

2 is a diagram illustrating an example in which a mode switching state is displayed on a CRT screen according to a preferred embodiment of the present invention;

3 is a flowchart illustrating a mode switching control method of a hybrid video playback system according to the present invention;

4 is a flowchart illustrating the operation according to the preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: function setting unit 4: first microcomputer

6: Tuner 8: Image IF Module

10: voice IF module 12: OSD signal processing unit

14: second microcomputer 16: disk loading unit

18: disc loading detection unit 20: disc information reading unit

22,34: video playback signal processing module 24,36: audio playback signal processing module

26: third microcom 28: tape loading unit

30: tape loading detection unit 32: tape information reading unit

38: mode switching switch 40: image processing module

42: video output unit 44: audio processing module

46: audio output unit

The present invention relates to a mode switching control method of a composite video playback system. More particularly, the present invention relates to a method of controlling a mode switching of a hybrid video playback system. The present invention relates to a mode switching control method of a composite video reproducing system, in which a voice reproducing mode is automatically switched and a reproducing function for recording information of a corresponding video tape or a video disc is automatically performed.

Conventionally, a video tape recorder performs an operation of reproducing a video signal and an audio signal recorded magnetically on a video tape, and a television is a video / audio signal of a broadcast program transmitted wirelessly or by wire from a broadcasting station. It has the function of playing video / audio of video signal and audio signal which is played back or transmitted from an external video playback device such as a video tape recorder. In this regard, a television and a video tape recorder typically transmit video / audio signals. Are connected to each other so that the video / audio signal of the videotape or the video / audio signal for the program of the television broadcast can be video / audio reproduced according to the setting state of the video mode or television mode.

In other words, conventionally, a television and a video tape recorder are configured as independent components to exchange video / audio signals by means of a connection cable. At present, the video / audio signal reproduction function and the video tape recorder / Televideo (TVCR), which combines playback and recording functions of audio signals, has been developed and commercialized.

According to such a televideo, a tuning function for tuning a broadcast program transmitted from a plurality of broadcasting stations, a channel memory function searched by the tuning function, video / audio signal image / audio playback according to a broadcast program of a tuned channel, or The recording function of the videotape to the recording surface is integrated.

In addition, information on a video disc employed as a disc-shaped information recording medium on which moving picture video information and audio information are currently recorded, for example, a video song program for practicing image music, a movie program, or a language program for acquiring language. Is a complex video playback system that integrates the components of a video disc player and the video of audio by enabling video / audio playback by MPEG / data decoding algorithm. It is proposed and commercialized.

However, in a composite video playback system in which a video tape recorder, a video disc player, and a television are mixed with each other, even if a video tape or a video disc is loaded in each loading unit, the function of the matrix button unit installed in the remote control remote control unit or the control panel of the main unit After the key is operated and the play mode of the video tape or the play mode of the video disc is set, the play function according to the mode is performed only after the play function is set. Therefore, user's repetitive manual operation is required. do.

Accordingly, the present invention has been made in view of the above circumstances, and the video / audio playback is performed by detecting the loading state of a video tape or a video disk in a hybrid video playback system in which a video tape recorder, a video disk player, and a television are mixed. It is an object of the present invention to provide a mode switching control method of a composite video reproducing system in which a mode is automatically switched and a reproducing operation on a loaded video tape or a video disc is automatically performed.

According to the mode switching control method of the composite video playback system according to the present invention, in the composite video playback system in which video tape playback means, video disk playback means and television are mixed; Detecting the loading state of the video tape or the video disc in the state; and if the loading state of the video tape or the video disc is detected, the first video mode for playing the video disc or the second video mode for playing the video tape is detected. At the same time as mode switching, causing the mode switching state to be displayed; performing a playback function on the loaded information on the loaded video tape or video disc; and a playback stop command for the playback function is keyed or video TV mode when playback of recorded information on tape or video disc is completed Mode includes the step of switching to provide a mode-switching control method of the hybrid system of the picture reproducing.

According to the present invention made as described above, a video tape recorder for playing and recording video tape, a video disk player for playing recorded information of a video disk, and a television for video / audio playback of a television broadcast program are mixed. In an image reproducing system, a first video mode for detecting a state in which a video tape or a video disc is loaded into each loading unit and reproducing image / audio of the recorded information of the video disc, or for reproducing image / audio of the recorded information of the video tape. In addition to the automatic mode switching to the second video mode, the playback function for the recorded information of the loaded video tape or video disc can be automatically started.

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

That is, Fig. 1 is a block diagram showing a hybrid video reproducing system for explaining the method of the present invention. In Fig. 1, reference numeral 2 denotes a remote control for remote control or a matrix button part provided in a control panel predetermined part of the main body. The overall functional operation of the composite video playback system in which the video tape recorder, video disc and television components are mixed with each other (that is, the video tape playback and playback stop and recording functions, the video disc playback and playback stop functions, and the television broadcasting). Indicates a function setting unit for key setting function commands for the channel selection function and the volume control function.

In addition, reference numeral 4 receives a function command by key operation of the function setting unit 2 to control the overall function operation, and also detects the loading state of the video disc from the second microcomputer 14 described later. The first loading detection signal according to the result or the second loading detection signal according to the result of detecting the loading state of the video tape from the third microcomputer 26 to be described later are input to the first video mode or the second video mode. In addition to controlling the mode switching, the mode switching state is displayed on the screen as text information, and the recording information playback function of the loaded video disc or video tape is executed. Stops the playback function of the video disc or the video tape upon receiving the first playback completion signal or the second playback completion signal from the third microcomputer 26 to be described later. In addition, it shows a first microcomputer for controlling so that the mode is switched to the television mode.

In this case, when the second loading detection signal corresponding to the loading of the video tape is input when the first microcomputer 4 plays the recording information of the video tape in the mode switching state of the first video mode, the first microcomputer 4 releases the first video mode. And mode switching to the second video mode, control of the playback of the loaded video disc is performed, and playback of recorded information on the video disc in the mode switching state of the second video mode. When the first loading detection signal is input, the second video mode is canceled and the mode is switched to the first video mode, and the playback function of the loaded video tape is performed.

Further, the first microcomputer 4 generates the tuning data VT for tuning the television broadcast of the predetermined channel selected by the key operation of the function setting section 2 in the mode switching state of the television mode.

Further, reference numeral 6 receives the tuning data VT from the first microcomputer 4 to tune the broadcast RF signal of the corresponding channel, and the oscillation frequency signal generated by the tuning data VT. A tuner for converting a mixed intermediate frequency signal into a tuner, 8 denotes an image IF module for amplifying the video signal of the tuned television broadcast, and 0 denotes a voice IF for intermediately amplifying the audio signal of the tuned television broadcast. Represents a module.

Also, reference numeral 12 denotes an OSD signal processing unit for generating text information such that the mode switching state is displayed on the CRT (not shown) screen when the mode switching is performed under the control of the first microcomputer 4.

Here, the OSD signal processing unit 12 causes the OSD information to be displayed on the OSD as shown in FIG. 2A when the video disc is loaded, and when the video tape is loaded. As shown in B), it is preferable that the text information of the second video mode is displayed on the OSD.

Reference numeral 14 also controls the overall functional operation for the playback function of the video disc, and outputs a first loading detection signal to the first microcomputer 4 by detecting the loading state of the video disc. The second microcomputer, which is controlled by the first microcomputer 4 to control the start of the playback function for the video disk and generates reproduction of the first playback completion signal when the recording of the recorded information of the video disk is completed, is performed. Indicates.

Reference numeral 16 denotes a disc loading unit for seating the video disc so as to be reproducibly loaded. 18 denotes a disc loading unit 16 that detects a state in which the video disc is loaded and detects the detected value. ) Denotes a conventional disc loading detection unit, and 20 denotes an optical head and a servo circuit for reading recorded information of a video disc loaded in the disc loading unit 16 under the control of the second microcomputer 14. A disc information reading unit, and 22 denotes a video reproduction signal processing module for restoring the video information of the read video disc to be reproduced by an MPEG decoding algorithm, and 24 denotes an audio of the read video disc. An audio reproducing signal processing module which processes information by an MPEG decoding algorithm.

Further, reference numeral 26 controls overall functional operation for the playback function of the video tape, outputs a second loading detection signal by detecting the loading state of the video tape, and outputs the second loading detection signal. The third microcomputer is controlled to control the playback operation of the video tape to be started and to generate a second playback completion signal when the playback of the recorded information of the video tape is completed.

Reference numeral 28 denotes a tape loading unit for loading and reproducing loading the video tape, and 30 denotes the third microcomputer as a result of detecting the state in which the video tape is loaded in the tape loading unit 28. A conventional tape loading detecting unit outputs to (26), and 32 has a rotating drum and a servo circuit having a plurality of magnetic heads for reading recording information recorded on the video tape under the control of the third microcomputer 26. A tape information reading section comprising motor driving means, 34 denotes a video reproduction signal processing module for reproducing a video signal of a video tape read out by the tape information reading unit 32 so as to reproduce the video signal, and 36 denotes the above An audio reproduction signal processing module for processing the audio signal of the video tape read by the tape information reading unit 32 so as to reproduce the audio signal. Other produce.

Reference numeral 38 denotes a mode switching switch which is controlled by the first microcomputer 4 to switch switching for mode switching to the television mode, the first video mode or the second video mode.

Reference numeral 40 denotes an image processing module for processing an image signal in the form of a composite image signal by adjusting the luminance and color signal reconstruction processing of the video signal generated by the reproduction of the video disk or the video tape or the television broadcast. Denotes an image output unit which drives the composite image signal processed by the image signal to be reproduced on the screen, and 44 denotes a sound processing module which processes the audio signal by the reproduction of the video disc or the video tape or the audio signal of the television broadcast. Reference numeral 46 denotes a voice output unit which amplifies the voice signal processed voice signal so as to reproduce voice.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowcharts of FIGS. 3 and 4.

First, as shown in FIG. 3, when the operating power is turned on in step 50, the process proceeds to step 51 where the first microcomputer 4 determines whether or not the video tape is loaded in the tape loading unit 28. .

As a result of the determination in step 51, if it is determined that the video tape is not loaded in the tape loading unit 28, control proceeds to step 52 to determine whether or not the video disc is being loaded in the disc loading unit 16. .

On the other hand, if it is determined in step 52 that the video disc is not loaded in the disc loading unit 16, the control proceeds to step 53 so that the mode switching in the mode switching unit 38 is performed according to the television mode. In addition to the control, by generating the tuning data (VT) for tuning the television broadcast of a predetermined channel, the tuner 6 receives the tuning data (VT) to tune the corresponding channel while the video IF module (8) And the video signal of the television broadcast through the intermediate frequency amplification operation of the audio IF module 10 and the video signal from the image processing module 40 and the audio processing module 44 through the mode switching unit 38, respectively. The audio signal is processed and the audio / video signal is reproduced through the video output unit 42 and the audio output unit 46.

However, as a result of the determination in step 52, the second microcomputer 14 receives the detection value from the disk loading detection unit 18 that detects the state in which the video disk is loaded into the disk loading unit 16, and then receives the first loading detection signal ( By generating P1), when the loading state of the video disc is detected, control proceeds to step 54 so that the mode switching switch 38 switches to the first video mode, and the OSD signal processor 12 ) To generate character information for OSD display of the switching state of the first video mode on the CRT (not shown) screen.

Then, the process proceeds to step 55 where the disc information reading unit 20 reads the recorded information of the video disc loaded in the disc loading unit 16 under the control of the second microcomputer 14, thereby causing the disc to be read. The video information and the audio information read by the information reading unit 20 are reproducibly signal-processed by the image reproducing signal processing module 22 and the note reproducing signal processing module 24, respectively, and the mode switching unit 38 is connected. Through this, the image / audio signal is processed by the image processing module 40 and the audio processing module 44 so as to reproduce the video / audio.

On the other hand, as a result of the determination in step 51, the first microcomputer 4 detects from the tape loading detection unit 30 that detects a state in which the video tape is loaded in the tape loading unit 28 in the third microcomputer 26. If the second loading detection signal P2 generated while receiving the value is detected and the video tape is loaded, the control proceeds to step 56 in which the mode switching switch 38 switches the mode to the second video mode. In addition, the OSD signal processing unit 12 is controlled to display the mode switching state of the second video mode.

Subsequently, the process proceeds to step 57 where the first microcomputer 4 records information of the video tape loaded from the tape information reading unit 32 to the tape loading unit 28 under the control of the third microcomputer 26. The readout video signal and the audio signal are reproducibly signal-processed by the projection playback signal processing module 34 and the audio reproduction signal processing module 36, respectively, and the mode switching unit 38 is read. Through the video processing module 40 and the audio processing module 44, the video / audio signal is processed so that the video / audio can be reproduced.

On the other hand, if the switching mode is the second video mode, the flow advances to step 58 whether playback of the recorded information of the videotape is completed or whether the function setting unit 2 is key operated to stop the playback function. The control is judged that the reproduction of the recorded information is completed or the key operation for the reproduction stop function is performed in step 60 to allow the mode switching switch 38 to switch to the television mode.

In addition, when the switching mode is the first video mode, the flow advances to step 59 whether playback of the recorded information of the video disc is completed, or whether the function setting unit 2 is key operated for a playback stop function. If it is determined that the reproduction of the recorded information is completed or the key operation for the reproduction stop function is performed, then the control proceeds to the step 60 above.

Next, operation according to a preferred embodiment of the present invention will be described with reference to FIG.

First, the mode switching unit 38 switches the mode to the second video mode by detecting the state in which the video tape is loaded in the tape loading unit 28 in step 65 by the tape loading detecting unit 30. By proceeding to step 66, the tape information reading unit 32 reads the recorded information of the video tape loaded on the tape loading unit 28, so that the read video / audio signal is signal-processed to reproduce the video / audio. .

In that state, the process proceeds to step 67 where the first microcomputer 4 determines whether or not a video disc is being loaded into the disc loading unit 16.

As a result of the determination of step 67, the first microcomputer 4 detects the state where the video disk is loaded in the disk loading unit 16 by the disk loading detection unit 18, thereby detecting the first microcomputer 14 in the first microcomputer 14. If it is determined that the loading detection signal is generated, then control proceeds to step 68 whereby the third microcomputer 26 is controlled to stop the read operation according to the playback function of the tape information reading unit 32, and the mode switching unit The switch 38 switches to the first video mode, and the OSD signal processor 12 generates character information for displaying the mode switching state of the first video mode.

Next, in step 69, the first microcomputer 4 controls the second microcomputer 14 to read the recording information of the video disk on which the disk information reading unit 20 is loaded into the disk loading unit 16. By doing so, the read video information and audio information can be reproduced by video / audio.

In this state, the flow advances to step 70 to determine whether the playback of the recorded information of the video disc is completed or whether the function setting unit 2 is key operated for the playback stop function to play the recorded information. When it is determined that the key operation for the playback stop function is completed, or the control proceeds to step 72, the mode switching switch 38 is switched to the television mode.

On the other hand, if it is determined that the video disc is not loaded in the disc loading unit 16 as a result of the determination of step 67, then the control proceeds to step 71 where the reproduction of the recorded information of the video tape is completed, or the function If the setting unit 2 judges whether or not the key operation is performed for the reproduction stop function and judges that the reproduction is completed or that the key operation for the reproduction stop function is being performed, then control proceeds to step 72 above.

According to the above-described present invention, the mode switching and playback function is automatically performed in response to a state in which a video tape or a video disc is loaded in a hybrid video playback system having a mixed video tape recorder, a video disc player, and a television. As can be made, there is an advantage that can provide a convenience to the user.

Claims (2)

A hybrid video reproduction system in which a video tape reproducing means, a video disc reproducing means, and a television are mixed, detecting a loading state of a video tape or a video disc when the operating power is on, and loading the video tape or the video disc. When the state is detected, switching the mode to the first video mode for playing the video disc or the second video mode for playing the video tape, and causing the mode switching state to be displayed on the screen; and loading the loaded video tape or video disc. Performing a playback function on the recorded information of the recording function; and switching the mode to the television mode when a playback stop command for the playback function is keyed or playback of the recorded information on the video tape or the video disk is completed. Mode switching of the composite video playback system characterized in that How language. The video disc of claim 1, wherein in the step, when the video disc is loaded at the time of playing the video tape, the second video mode is canceled and the mode is switched to the first video mode, and the playing function of the loaded video disc is performed. When the video tape is loaded at the time of playback, the first video mode is canceled and the mode is switched to the second video mode, and the mode switching control of the composite video playback system is performed. Way.